Add `go mod` support (#2503)

* Remove vendor and go-dep

Signed-off-by: Yong Tang <yong.tang.github@outlook.com>

* Add go.mod

Signed-off-by: Yong Tang <yong.tang.github@outlook.com>

* Update Makefile and .travis.yml

Signed-off-by: Yong Tang <yong.tang.github@outlook.com>

107 files changed, 0 insertions, 30140 deletions

diff --git a/vendor/google.golang.org/appengine/LICENSE b/vendor/google.golang.org/appengine/LICENSE
deleted file mode 100644
index d64569567..000000000
--- a/vendor/google.golang.org/appengine/LICENSE
+++ /dev/null
@@ -1,202 +0,0 @@
-
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-                        http://www.apache.org/licenses/
-
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diff --git a/vendor/google.golang.org/appengine/appengine.go b/vendor/google.golang.org/appengine/appengine.go
deleted file mode 100644
index 76dedc81d..000000000
--- a/vendor/google.golang.org/appengine/appengine.go
+++ /dev/null
@@ -1,113 +0,0 @@
-// Copyright 2011 Google Inc. All rights reserved.
-// Use of this source code is governed by the Apache 2.0
-// license that can be found in the LICENSE file.
-
-// Package appengine provides basic functionality for Google App Engine.
-//
-// For more information on how to write Go apps for Google App Engine, see:
-// https://cloud.google.com/appengine/docs/go/
-package appengine // import "google.golang.org/appengine"
-
-import (
-	"net/http"
-
-	"github.com/golang/protobuf/proto"
-	"golang.org/x/net/context"
-
-	"google.golang.org/appengine/internal"
-)
-
-// The gophers party all night; the rabbits provide the beats.
-
-// Main is the principal entry point for an app running in App Engine.
-//
-// On App Engine Flexible it installs a trivial health checker if one isn't
-// already registered, and starts listening on port 8080 (overridden by the
-// $PORT environment variable).
-//
-// See https://cloud.google.com/appengine/docs/flexible/custom-runtimes#health_check_requests
-// for details on how to do your own health checking.
-//
-// On App Engine Standard it ensures the server has started and is prepared to
-// receive requests.
-//
-// Main never returns.
-//
-// Main is designed so that the app's main package looks like this:
-//
-//      package main
-//
-//      import (
-//              "google.golang.org/appengine"
-//
-//              _ "myapp/package0"
-//              _ "myapp/package1"
-//      )
-//
-//      func main() {
-//              appengine.Main()
-//      }
-//
-// The "myapp/packageX" packages are expected to register HTTP handlers
-// in their init functions.
-func Main() {
-	internal.Main()
-}
-
-// IsDevAppServer reports whether the App Engine app is running in the
-// development App Server.
-func IsDevAppServer() bool {
-	return internal.IsDevAppServer()
-}
-
-// NewContext returns a context for an in-flight HTTP request.
-// This function is cheap.
-func NewContext(req *http.Request) context.Context {
-	return internal.ReqContext(req)
-}
-
-// WithContext returns a copy of the parent context
-// and associates it with an in-flight HTTP request.
-// This function is cheap.
-func WithContext(parent context.Context, req *http.Request) context.Context {
-	return internal.WithContext(parent, req)
-}
-
-// TODO(dsymonds): Add a Call function here? Otherwise other packages can't access internal.Call.
-
-// BlobKey is a key for a blobstore blob.
-//
-// Conceptually, this type belongs in the blobstore package, but it lives in
-// the appengine package to avoid a circular dependency: blobstore depends on
-// datastore, and datastore needs to refer to the BlobKey type.
-type BlobKey string
-
-// GeoPoint represents a location as latitude/longitude in degrees.
-type GeoPoint struct {
-	Lat, Lng float64
-}
-
-// Valid returns whether a GeoPoint is within [-90, 90] latitude and [-180, 180] longitude.
-func (g GeoPoint) Valid() bool {
-	return -90 <= g.Lat && g.Lat <= 90 && -180 <= g.Lng && g.Lng <= 180
-}
-
-// APICallFunc defines a function type for handling an API call.
-// See WithCallOverride.
-type APICallFunc func(ctx context.Context, service, method string, in, out proto.Message) error
-
-// WithAPICallFunc returns a copy of the parent context
-// that will cause API calls to invoke f instead of their normal operation.
-//
-// This is intended for advanced users only.
-func WithAPICallFunc(ctx context.Context, f APICallFunc) context.Context {
-	return internal.WithCallOverride(ctx, internal.CallOverrideFunc(f))
-}
-
-// APICall performs an API call.
-//
-// This is not intended for general use; it is exported for use in conjunction
-// with WithAPICallFunc.
-func APICall(ctx context.Context, service, method string, in, out proto.Message) error {
-	return internal.Call(ctx, service, method, in, out)
-}
diff --git a/vendor/google.golang.org/appengine/appengine_vm.go b/vendor/google.golang.org/appengine/appengine_vm.go
deleted file mode 100644
index f4b645aad..000000000
--- a/vendor/google.golang.org/appengine/appengine_vm.go
+++ /dev/null
@@ -1,20 +0,0 @@
-// Copyright 2015 Google Inc. All rights reserved.
-// Use of this source code is governed by the Apache 2.0
-// license that can be found in the LICENSE file.
-
-// +build !appengine
-
-package appengine
-
-import (
-	"golang.org/x/net/context"
-
-	"google.golang.org/appengine/internal"
-)
-
-// BackgroundContext returns a context not associated with a request.
-// This should only be used when not servicing a request.
-// This only works in App Engine "flexible environment".
-func BackgroundContext() context.Context {
-	return internal.BackgroundContext()
-}
diff --git a/vendor/google.golang.org/appengine/errors.go b/vendor/google.golang.org/appengine/errors.go
deleted file mode 100644
index 16d0772e2..000000000
--- a/vendor/google.golang.org/appengine/errors.go
+++ /dev/null
@@ -1,46 +0,0 @@
-// Copyright 2011 Google Inc. All rights reserved.
-// Use of this source code is governed by the Apache 2.0
-// license that can be found in the LICENSE file.
-
-// This file provides error functions for common API failure modes.
-
-package appengine
-
-import (
-	"fmt"
-
-	"google.golang.org/appengine/internal"
-)
-
-// IsOverQuota reports whether err represents an API call failure
-// due to insufficient available quota.
-func IsOverQuota(err error) bool {
-	callErr, ok := err.(*internal.CallError)
-	return ok && callErr.Code == 4
-}
-
-// MultiError is returned by batch operations when there are errors with
-// particular elements. Errors will be in a one-to-one correspondence with
-// the input elements; successful elements will have a nil entry.
-type MultiError []error
-
-func (m MultiError) Error() string {
-	s, n := "", 0
-	for _, e := range m {
-		if e != nil {
-			if n == 0 {
-				s = e.Error()
-			}
-			n++
-		}
-	}
-	switch n {
-	case 0:
-		return "(0 errors)"
-	case 1:
-		return s
-	case 2:
-		return s + " (and 1 other error)"
-	}
-	return fmt.Sprintf("%s (and %d other errors)", s, n-1)
-}
diff --git a/vendor/google.golang.org/appengine/identity.go b/vendor/google.golang.org/appengine/identity.go
deleted file mode 100644
index b8dcf8f36..000000000
--- a/vendor/google.golang.org/appengine/identity.go
+++ /dev/null
@@ -1,142 +0,0 @@
-// Copyright 2011 Google Inc. All rights reserved.
-// Use of this source code is governed by the Apache 2.0
-// license that can be found in the LICENSE file.
-
-package appengine
-
-import (
-	"time"
-
-	"golang.org/x/net/context"
-
-	"google.golang.org/appengine/internal"
-	pb "google.golang.org/appengine/internal/app_identity"
-	modpb "google.golang.org/appengine/internal/modules"
-)
-
-// AppID returns the application ID for the current application.
-// The string will be a plain application ID (e.g. "appid"), with a
-// domain prefix for custom domain deployments (e.g. "example.com:appid").
-func AppID(c context.Context) string { return internal.AppID(c) }
-
-// DefaultVersionHostname returns the standard hostname of the default version
-// of the current application (e.g. "my-app.appspot.com"). This is suitable for
-// use in constructing URLs.
-func DefaultVersionHostname(c context.Context) string {
-	return internal.DefaultVersionHostname(c)
-}
-
-// ModuleName returns the module name of the current instance.
-func ModuleName(c context.Context) string {
-	return internal.ModuleName(c)
-}
-
-// ModuleHostname returns a hostname of a module instance.
-// If module is the empty string, it refers to the module of the current instance.
-// If version is empty, it refers to the version of the current instance if valid,
-// or the default version of the module of the current instance.
-// If instance is empty, ModuleHostname returns the load-balancing hostname.
-func ModuleHostname(c context.Context, module, version, instance string) (string, error) {
-	req := &modpb.GetHostnameRequest{}
-	if module != "" {
-		req.Module = &module
-	}
-	if version != "" {
-		req.Version = &version
-	}
-	if instance != "" {
-		req.Instance = &instance
-	}
-	res := &modpb.GetHostnameResponse{}
-	if err := internal.Call(c, "modules", "GetHostname", req, res); err != nil {
-		return "", err
-	}
-	return *res.Hostname, nil
-}
-
-// VersionID returns the version ID for the current application.
-// It will be of the form "X.Y", where X is specified in app.yaml,
-// and Y is a number generated when each version of the app is uploaded.
-// It does not include a module name.
-func VersionID(c context.Context) string { return internal.VersionID(c) }
-
-// InstanceID returns a mostly-unique identifier for this instance.
-func InstanceID() string { return internal.InstanceID() }
-
-// Datacenter returns an identifier for the datacenter that the instance is running in.
-func Datacenter(c context.Context) string { return internal.Datacenter(c) }
-
-// ServerSoftware returns the App Engine release version.
-// In production, it looks like "Google App Engine/X.Y.Z".
-// In the development appserver, it looks like "Development/X.Y".
-func ServerSoftware() string { return internal.ServerSoftware() }
-
-// RequestID returns a string that uniquely identifies the request.
-func RequestID(c context.Context) string { return internal.RequestID(c) }
-
-// AccessToken generates an OAuth2 access token for the specified scopes on
-// behalf of service account of this application. This token will expire after
-// the returned time.
-func AccessToken(c context.Context, scopes ...string) (token string, expiry time.Time, err error) {
-	req := &pb.GetAccessTokenRequest{Scope: scopes}
-	res := &pb.GetAccessTokenResponse{}
-
-	err = internal.Call(c, "app_identity_service", "GetAccessToken", req, res)
-	if err != nil {
-		return "", time.Time{}, err
-	}
-	return res.GetAccessToken(), time.Unix(res.GetExpirationTime(), 0), nil
-}
-
-// Certificate represents a public certificate for the app.
-type Certificate struct {
-	KeyName string
-	Data    []byte // PEM-encoded X.509 certificate
-}
-
-// PublicCertificates retrieves the public certificates for the app.
-// They can be used to verify a signature returned by SignBytes.
-func PublicCertificates(c context.Context) ([]Certificate, error) {
-	req := &pb.GetPublicCertificateForAppRequest{}
-	res := &pb.GetPublicCertificateForAppResponse{}
-	if err := internal.Call(c, "app_identity_service", "GetPublicCertificatesForApp", req, res); err != nil {
-		return nil, err
-	}
-	var cs []Certificate
-	for _, pc := range res.PublicCertificateList {
-		cs = append(cs, Certificate{
-			KeyName: pc.GetKeyName(),
-			Data:    []byte(pc.GetX509CertificatePem()),
-		})
-	}
-	return cs, nil
-}
-
-// ServiceAccount returns a string representing the service account name, in
-// the form of an email address (typically app_id@appspot.gserviceaccount.com).
-func ServiceAccount(c context.Context) (string, error) {
-	req := &pb.GetServiceAccountNameRequest{}
-	res := &pb.GetServiceAccountNameResponse{}
-
-	err := internal.Call(c, "app_identity_service", "GetServiceAccountName", req, res)
-	if err != nil {
-		return "", err
-	}
-	return res.GetServiceAccountName(), err
-}
-
-// SignBytes signs bytes using a private key unique to your application.
-func SignBytes(c context.Context, bytes []byte) (keyName string, signature []byte, err error) {
-	req := &pb.SignForAppRequest{BytesToSign: bytes}
-	res := &pb.SignForAppResponse{}
-
-	if err := internal.Call(c, "app_identity_service", "SignForApp", req, res); err != nil {
-		return "", nil, err
-	}
-	return res.GetKeyName(), res.GetSignatureBytes(), nil
-}
-
-func init() {
-	internal.RegisterErrorCodeMap("app_identity_service", pb.AppIdentityServiceError_ErrorCode_name)
-	internal.RegisterErrorCodeMap("modules", modpb.ModulesServiceError_ErrorCode_name)
-}
diff --git a/vendor/google.golang.org/appengine/internal/api.go b/vendor/google.golang.org/appengine/internal/api.go
deleted file mode 100644
index 16f87c5d3..000000000
--- a/vendor/google.golang.org/appengine/internal/api.go
+++ /dev/null
@@ -1,660 +0,0 @@
-// Copyright 2011 Google Inc. All rights reserved.
-// Use of this source code is governed by the Apache 2.0
-// license that can be found in the LICENSE file.
-
-// +build !appengine
-// +build go1.7
-
-package internal
-
-import (
-	"bytes"
-	"errors"
-	"fmt"
-	"io/ioutil"
-	"log"
-	"net"
-	"net/http"
-	"net/url"
-	"os"
-	"runtime"
-	"strconv"
-	"strings"
-	"sync"
-	"sync/atomic"
-	"time"
-
-	"github.com/golang/protobuf/proto"
-	netcontext "golang.org/x/net/context"
-
-	basepb "google.golang.org/appengine/internal/base"
-	logpb "google.golang.org/appengine/internal/log"
-	remotepb "google.golang.org/appengine/internal/remote_api"
-)
-
-const (
-	apiPath             = "/rpc_http"
-	defaultTicketSuffix = "/default.20150612t184001.0"
-)
-
-var (
-	// Incoming headers.
-	ticketHeader       = http.CanonicalHeaderKey("X-AppEngine-API-Ticket")
-	dapperHeader       = http.CanonicalHeaderKey("X-Google-DapperTraceInfo")
-	traceHeader        = http.CanonicalHeaderKey("X-Cloud-Trace-Context")
-	curNamespaceHeader = http.CanonicalHeaderKey("X-AppEngine-Current-Namespace")
-	userIPHeader       = http.CanonicalHeaderKey("X-AppEngine-User-IP")
-	remoteAddrHeader   = http.CanonicalHeaderKey("X-AppEngine-Remote-Addr")
-
-	// Outgoing headers.
-	apiEndpointHeader      = http.CanonicalHeaderKey("X-Google-RPC-Service-Endpoint")
-	apiEndpointHeaderValue = []string{"app-engine-apis"}
-	apiMethodHeader        = http.CanonicalHeaderKey("X-Google-RPC-Service-Method")
-	apiMethodHeaderValue   = []string{"/VMRemoteAPI.CallRemoteAPI"}
-	apiDeadlineHeader      = http.CanonicalHeaderKey("X-Google-RPC-Service-Deadline")
-	apiContentType         = http.CanonicalHeaderKey("Content-Type")
-	apiContentTypeValue    = []string{"application/octet-stream"}
-	logFlushHeader         = http.CanonicalHeaderKey("X-AppEngine-Log-Flush-Count")
-
-	apiHTTPClient = &http.Client{
-		Transport: &http.Transport{
-			Proxy: http.ProxyFromEnvironment,
-			Dial:  limitDial,
-		},
-	}
-
-	defaultTicketOnce     sync.Once
-	defaultTicket         string
-	backgroundContextOnce sync.Once
-	backgroundContext     netcontext.Context
-)
-
-func apiURL() *url.URL {
-	host, port := "appengine.googleapis.internal", "10001"
-	if h := os.Getenv("API_HOST"); h != "" {
-		host = h
-	}
-	if p := os.Getenv("API_PORT"); p != "" {
-		port = p
-	}
-	return &url.URL{
-		Scheme: "http",
-		Host:   host + ":" + port,
-		Path:   apiPath,
-	}
-}
-
-func handleHTTP(w http.ResponseWriter, r *http.Request) {
-	c := &context{
-		req:       r,
-		outHeader: w.Header(),
-		apiURL:    apiURL(),
-	}
-	r = r.WithContext(withContext(r.Context(), c))
-	c.req = r
-
-	stopFlushing := make(chan int)
-
-	// Patch up RemoteAddr so it looks reasonable.
-	if addr := r.Header.Get(userIPHeader); addr != "" {
-		r.RemoteAddr = addr
-	} else if addr = r.Header.Get(remoteAddrHeader); addr != "" {
-		r.RemoteAddr = addr
-	} else {
-		// Should not normally reach here, but pick a sensible default anyway.
-		r.RemoteAddr = "127.0.0.1"
-	}
-	// The address in the headers will most likely be of these forms:
-	//	123.123.123.123
-	//	2001:db8::1
-	// net/http.Request.RemoteAddr is specified to be in "IP:port" form.
-	if _, _, err := net.SplitHostPort(r.RemoteAddr); err != nil {
-		// Assume the remote address is only a host; add a default port.
-		r.RemoteAddr = net.JoinHostPort(r.RemoteAddr, "80")
-	}
-
-	// Start goroutine responsible for flushing app logs.
-	// This is done after adding c to ctx.m (and stopped before removing it)
-	// because flushing logs requires making an API call.
-	go c.logFlusher(stopFlushing)
-
-	executeRequestSafely(c, r)
-	c.outHeader = nil // make sure header changes aren't respected any more
-
-	stopFlushing <- 1 // any logging beyond this point will be dropped
-
-	// Flush any pending logs asynchronously.
-	c.pendingLogs.Lock()
-	flushes := c.pendingLogs.flushes
-	if len(c.pendingLogs.lines) > 0 {
-		flushes++
-	}
-	c.pendingLogs.Unlock()
-	go c.flushLog(false)
-	w.Header().Set(logFlushHeader, strconv.Itoa(flushes))
-
-	// Avoid nil Write call if c.Write is never called.
-	if c.outCode != 0 {
-		w.WriteHeader(c.outCode)
-	}
-	if c.outBody != nil {
-		w.Write(c.outBody)
-	}
-}
-
-func executeRequestSafely(c *context, r *http.Request) {
-	defer func() {
-		if x := recover(); x != nil {
-			logf(c, 4, "%s", renderPanic(x)) // 4 == critical
-			c.outCode = 500
-		}
-	}()
-
-	http.DefaultServeMux.ServeHTTP(c, r)
-}
-
-func renderPanic(x interface{}) string {
-	buf := make([]byte, 16<<10) // 16 KB should be plenty
-	buf = buf[:runtime.Stack(buf, false)]
-
-	// Remove the first few stack frames:
-	//   this func
-	//   the recover closure in the caller
-	// That will root the stack trace at the site of the panic.
-	const (
-		skipStart  = "internal.renderPanic"
-		skipFrames = 2
-	)
-	start := bytes.Index(buf, []byte(skipStart))
-	p := start
-	for i := 0; i < skipFrames*2 && p+1 < len(buf); i++ {
-		p = bytes.IndexByte(buf[p+1:], '\n') + p + 1
-		if p < 0 {
-			break
-		}
-	}
-	if p >= 0 {
-		// buf[start:p+1] is the block to remove.
-		// Copy buf[p+1:] over buf[start:] and shrink buf.
-		copy(buf[start:], buf[p+1:])
-		buf = buf[:len(buf)-(p+1-start)]
-	}
-
-	// Add panic heading.
-	head := fmt.Sprintf("panic: %v\n\n", x)
-	if len(head) > len(buf) {
-		// Extremely unlikely to happen.
-		return head
-	}
-	copy(buf[len(head):], buf)
-	copy(buf, head)
-
-	return string(buf)
-}
-
-// context represents the context of an in-flight HTTP request.
-// It implements the appengine.Context and http.ResponseWriter interfaces.
-type context struct {
-	req *http.Request
-
-	outCode   int
-	outHeader http.Header
-	outBody   []byte
-
-	pendingLogs struct {
-		sync.Mutex
-		lines   []*logpb.UserAppLogLine
-		flushes int
-	}
-
-	apiURL *url.URL
-}
-
-var contextKey = "holds a *context"
-
-// jointContext joins two contexts in a superficial way.
-// It takes values and timeouts from a base context, and only values from another context.
-type jointContext struct {
-	base       netcontext.Context
-	valuesOnly netcontext.Context
-}
-
-func (c jointContext) Deadline() (time.Time, bool) {
-	return c.base.Deadline()
-}
-
-func (c jointContext) Done() <-chan struct{} {
-	return c.base.Done()
-}
-
-func (c jointContext) Err() error {
-	return c.base.Err()
-}
-
-func (c jointContext) Value(key interface{}) interface{} {
-	if val := c.base.Value(key); val != nil {
-		return val
-	}
-	return c.valuesOnly.Value(key)
-}
-
-// fromContext returns the App Engine context or nil if ctx is not
-// derived from an App Engine context.
-func fromContext(ctx netcontext.Context) *context {
-	c, _ := ctx.Value(&contextKey).(*context)
-	return c
-}
-
-func withContext(parent netcontext.Context, c *context) netcontext.Context {
-	ctx := netcontext.WithValue(parent, &contextKey, c)
-	if ns := c.req.Header.Get(curNamespaceHeader); ns != "" {
-		ctx = withNamespace(ctx, ns)
-	}
-	return ctx
-}
-
-func toContext(c *context) netcontext.Context {
-	return withContext(netcontext.Background(), c)
-}
-
-func IncomingHeaders(ctx netcontext.Context) http.Header {
-	if c := fromContext(ctx); c != nil {
-		return c.req.Header
-	}
-	return nil
-}
-
-func ReqContext(req *http.Request) netcontext.Context {
-	return req.Context()
-}
-
-func WithContext(parent netcontext.Context, req *http.Request) netcontext.Context {
-	return jointContext{
-		base:       parent,
-		valuesOnly: req.Context(),
-	}
-}
-
-// DefaultTicket returns a ticket used for background context or dev_appserver.
-func DefaultTicket() string {
-	defaultTicketOnce.Do(func() {
-		if IsDevAppServer() {
-			defaultTicket = "testapp" + defaultTicketSuffix
-			return
-		}
-		appID := partitionlessAppID()
-		escAppID := strings.Replace(strings.Replace(appID, ":", "_", -1), ".", "_", -1)
-		majVersion := VersionID(nil)
-		if i := strings.Index(majVersion, "."); i > 0 {
-			majVersion = majVersion[:i]
-		}
-		defaultTicket = fmt.Sprintf("%s/%s.%s.%s", escAppID, ModuleName(nil), majVersion, InstanceID())
-	})
-	return defaultTicket
-}
-
-func BackgroundContext() netcontext.Context {
-	backgroundContextOnce.Do(func() {
-		// Compute background security ticket.
-		ticket := DefaultTicket()
-
-		c := &context{
-			req: &http.Request{
-				Header: http.Header{
-					ticketHeader: []string{ticket},
-				},
-			},
-			apiURL: apiURL(),
-		}
-		backgroundContext = toContext(c)
-
-		// TODO(dsymonds): Wire up the shutdown handler to do a final flush.
-		go c.logFlusher(make(chan int))
-	})
-
-	return backgroundContext
-}
-
-// RegisterTestRequest registers the HTTP request req for testing, such that
-// any API calls are sent to the provided URL. It returns a closure to delete
-// the registration.
-// It should only be used by aetest package.
-func RegisterTestRequest(req *http.Request, apiURL *url.URL, decorate func(netcontext.Context) netcontext.Context) (*http.Request, func()) {
-	c := &context{
-		req:    req,
-		apiURL: apiURL,
-	}
-	ctx := withContext(decorate(req.Context()), c)
-	req = req.WithContext(ctx)
-	c.req = req
-	return req, func() {}
-}
-
-var errTimeout = &CallError{
-	Detail:  "Deadline exceeded",
-	Code:    int32(remotepb.RpcError_CANCELLED),
-	Timeout: true,
-}
-
-func (c *context) Header() http.Header { return c.outHeader }
-
-// Copied from $GOROOT/src/pkg/net/http/transfer.go. Some response status
-// codes do not permit a response body (nor response entity headers such as
-// Content-Length, Content-Type, etc).
-func bodyAllowedForStatus(status int) bool {
-	switch {
-	case status >= 100 && status <= 199:
-		return false
-	case status == 204:
-		return false
-	case status == 304:
-		return false
-	}
-	return true
-}
-
-func (c *context) Write(b []byte) (int, error) {
-	if c.outCode == 0 {
-		c.WriteHeader(http.StatusOK)
-	}
-	if len(b) > 0 && !bodyAllowedForStatus(c.outCode) {
-		return 0, http.ErrBodyNotAllowed
-	}
-	c.outBody = append(c.outBody, b...)
-	return len(b), nil
-}
-
-func (c *context) WriteHeader(code int) {
-	if c.outCode != 0 {
-		logf(c, 3, "WriteHeader called multiple times on request.") // error level
-		return
-	}
-	c.outCode = code
-}
-
-func (c *context) post(body []byte, timeout time.Duration) (b []byte, err error) {
-	hreq := &http.Request{
-		Method: "POST",
-		URL:    c.apiURL,
-		Header: http.Header{
-			apiEndpointHeader: apiEndpointHeaderValue,
-			apiMethodHeader:   apiMethodHeaderValue,
-			apiContentType:    apiContentTypeValue,
-			apiDeadlineHeader: []string{strconv.FormatFloat(timeout.Seconds(), 'f', -1, 64)},
-		},
-		Body:          ioutil.NopCloser(bytes.NewReader(body)),
-		ContentLength: int64(len(body)),
-		Host:          c.apiURL.Host,
-	}
-	if info := c.req.Header.Get(dapperHeader); info != "" {
-		hreq.Header.Set(dapperHeader, info)
-	}
-	if info := c.req.Header.Get(traceHeader); info != "" {
-		hreq.Header.Set(traceHeader, info)
-	}
-
-	tr := apiHTTPClient.Transport.(*http.Transport)
-
-	var timedOut int32 // atomic; set to 1 if timed out
-	t := time.AfterFunc(timeout, func() {
-		atomic.StoreInt32(&timedOut, 1)
-		tr.CancelRequest(hreq)
-	})
-	defer t.Stop()
-	defer func() {
-		// Check if timeout was exceeded.
-		if atomic.LoadInt32(&timedOut) != 0 {
-			err = errTimeout
-		}
-	}()
-
-	hresp, err := apiHTTPClient.Do(hreq)
-	if err != nil {
-		return nil, &CallError{
-			Detail: fmt.Sprintf("service bridge HTTP failed: %v", err),
-			Code:   int32(remotepb.RpcError_UNKNOWN),
-		}
-	}
-	defer hresp.Body.Close()
-	hrespBody, err := ioutil.ReadAll(hresp.Body)
-	if hresp.StatusCode != 200 {
-		return nil, &CallError{
-			Detail: fmt.Sprintf("service bridge returned HTTP %d (%q)", hresp.StatusCode, hrespBody),
-			Code:   int32(remotepb.RpcError_UNKNOWN),
-		}
-	}
-	if err != nil {
-		return nil, &CallError{
-			Detail: fmt.Sprintf("service bridge response bad: %v", err),
-			Code:   int32(remotepb.RpcError_UNKNOWN),
-		}
-	}
-	return hrespBody, nil
-}
-
-func Call(ctx netcontext.Context, service, method string, in, out proto.Message) error {
-	if ns := NamespaceFromContext(ctx); ns != "" {
-		if fn, ok := NamespaceMods[service]; ok {
-			fn(in, ns)
-		}
-	}
-
-	if f, ctx, ok := callOverrideFromContext(ctx); ok {
-		return f(ctx, service, method, in, out)
-	}
-
-	// Handle already-done contexts quickly.
-	select {
-	case <-ctx.Done():
-		return ctx.Err()
-	default:
-	}
-
-	c := fromContext(ctx)
-	if c == nil {
-		// Give a good error message rather than a panic lower down.
-		return errNotAppEngineContext
-	}
-
-	// Apply transaction modifications if we're in a transaction.
-	if t := transactionFromContext(ctx); t != nil {
-		if t.finished {
-			return errors.New("transaction context has expired")
-		}
-		applyTransaction(in, &t.transaction)
-	}
-
-	// Default RPC timeout is 60s.
-	timeout := 60 * time.Second
-	if deadline, ok := ctx.Deadline(); ok {
-		timeout = deadline.Sub(time.Now())
-	}
-
-	data, err := proto.Marshal(in)
-	if err != nil {
-		return err
-	}
-
-	ticket := c.req.Header.Get(ticketHeader)
-	// Use a test ticket under test environment.
-	if ticket == "" {
-		if appid := ctx.Value(&appIDOverrideKey); appid != nil {
-			ticket = appid.(string) + defaultTicketSuffix
-		}
-	}
-	// Fall back to use background ticket when the request ticket is not available in Flex or dev_appserver.
-	if ticket == "" {
-		ticket = DefaultTicket()
-	}
-	req := &remotepb.Request{
-		ServiceName: &service,
-		Method:      &method,
-		Request:     data,
-		RequestId:   &ticket,
-	}
-	hreqBody, err := proto.Marshal(req)
-	if err != nil {
-		return err
-	}
-
-	hrespBody, err := c.post(hreqBody, timeout)
-	if err != nil {
-		return err
-	}
-
-	res := &remotepb.Response{}
-	if err := proto.Unmarshal(hrespBody, res); err != nil {
-		return err
-	}
-	if res.RpcError != nil {
-		ce := &CallError{
-			Detail: res.RpcError.GetDetail(),
-			Code:   *res.RpcError.Code,
-		}
-		switch remotepb.RpcError_ErrorCode(ce.Code) {
-		case remotepb.RpcError_CANCELLED, remotepb.RpcError_DEADLINE_EXCEEDED:
-			ce.Timeout = true
-		}
-		return ce
-	}
-	if res.ApplicationError != nil {
-		return &APIError{
-			Service: *req.ServiceName,
-			Detail:  res.ApplicationError.GetDetail(),
-			Code:    *res.ApplicationError.Code,
-		}
-	}
-	if res.Exception != nil || res.JavaException != nil {
-		// This shouldn't happen, but let's be defensive.
-		return &CallError{
-			Detail: "service bridge returned exception",
-			Code:   int32(remotepb.RpcError_UNKNOWN),
-		}
-	}
-	return proto.Unmarshal(res.Response, out)
-}
-
-func (c *context) Request() *http.Request {
-	return c.req
-}
-
-func (c *context) addLogLine(ll *logpb.UserAppLogLine) {
-	// Truncate long log lines.
-	// TODO(dsymonds): Check if this is still necessary.
-	const lim = 8 << 10
-	if len(*ll.Message) > lim {
-		suffix := fmt.Sprintf("...(length %d)", len(*ll.Message))
-		ll.Message = proto.String((*ll.Message)[:lim-len(suffix)] + suffix)
-	}
-
-	c.pendingLogs.Lock()
-	c.pendingLogs.lines = append(c.pendingLogs.lines, ll)
-	c.pendingLogs.Unlock()
-}
-
-var logLevelName = map[int64]string{
-	0: "DEBUG",
-	1: "INFO",
-	2: "WARNING",
-	3: "ERROR",
-	4: "CRITICAL",
-}
-
-func logf(c *context, level int64, format string, args ...interface{}) {
-	if c == nil {
-		panic("not an App Engine context")
-	}
-	s := fmt.Sprintf(format, args...)
-	s = strings.TrimRight(s, "\n") // Remove any trailing newline characters.
-	c.addLogLine(&logpb.UserAppLogLine{
-		TimestampUsec: proto.Int64(time.Now().UnixNano() / 1e3),
-		Level:         &level,
-		Message:       &s,
-	})
-	log.Print(logLevelName[level] + ": " + s)
-}
-
-// flushLog attempts to flush any pending logs to the appserver.
-// It should not be called concurrently.
-func (c *context) flushLog(force bool) (flushed bool) {
-	c.pendingLogs.Lock()
-	// Grab up to 30 MB. We can get away with up to 32 MB, but let's be cautious.
-	n, rem := 0, 30<<20
-	for ; n < len(c.pendingLogs.lines); n++ {
-		ll := c.pendingLogs.lines[n]
-		// Each log line will require about 3 bytes of overhead.
-		nb := proto.Size(ll) + 3
-		if nb > rem {
-			break
-		}
-		rem -= nb
-	}
-	lines := c.pendingLogs.lines[:n]
-	c.pendingLogs.lines = c.pendingLogs.lines[n:]
-	c.pendingLogs.Unlock()
-
-	if len(lines) == 0 && !force {
-		// Nothing to flush.
-		return false
-	}
-
-	rescueLogs := false
-	defer func() {
-		if rescueLogs {
-			c.pendingLogs.Lock()
-			c.pendingLogs.lines = append(lines, c.pendingLogs.lines...)
-			c.pendingLogs.Unlock()
-		}
-	}()
-
-	buf, err := proto.Marshal(&logpb.UserAppLogGroup{
-		LogLine: lines,
-	})
-	if err != nil {
-		log.Printf("internal.flushLog: marshaling UserAppLogGroup: %v", err)
-		rescueLogs = true
-		return false
-	}
-
-	req := &logpb.FlushRequest{
-		Logs: buf,
-	}
-	res := &basepb.VoidProto{}
-	c.pendingLogs.Lock()
-	c.pendingLogs.flushes++
-	c.pendingLogs.Unlock()
-	if err := Call(toContext(c), "logservice", "Flush", req, res); err != nil {
-		log.Printf("internal.flushLog: Flush RPC: %v", err)
-		rescueLogs = true
-		return false
-	}
-	return true
-}
-
-const (
-	// Log flushing parameters.
-	flushInterval      = 1 * time.Second
-	forceFlushInterval = 60 * time.Second
-)
-
-func (c *context) logFlusher(stop <-chan int) {
-	lastFlush := time.Now()
-	tick := time.NewTicker(flushInterval)
-	for {
-		select {
-		case <-stop:
-			// Request finished.
-			tick.Stop()
-			return
-		case <-tick.C:
-			force := time.Now().Sub(lastFlush) > forceFlushInterval
-			if c.flushLog(force) {
-				lastFlush = time.Now()
-			}
-		}
-	}
-}
-
-func ContextForTesting(req *http.Request) netcontext.Context {
-	return toContext(&context{req: req})
-}
diff --git a/vendor/google.golang.org/appengine/internal/api_classic.go b/vendor/google.golang.org/appengine/internal/api_classic.go
deleted file mode 100644
index f0f40b2e3..000000000
--- a/vendor/google.golang.org/appengine/internal/api_classic.go
+++ /dev/null
@@ -1,169 +0,0 @@
-// Copyright 2015 Google Inc. All rights reserved.
-// Use of this source code is governed by the Apache 2.0
-// license that can be found in the LICENSE file.
-
-// +build appengine
-
-package internal
-
-import (
-	"errors"
-	"fmt"
-	"net/http"
-	"time"
-
-	"appengine"
-	"appengine_internal"
-	basepb "appengine_internal/base"
-
-	"github.com/golang/protobuf/proto"
-	netcontext "golang.org/x/net/context"
-)
-
-var contextKey = "holds an appengine.Context"
-
-// fromContext returns the App Engine context or nil if ctx is not
-// derived from an App Engine context.
-func fromContext(ctx netcontext.Context) appengine.Context {
-	c, _ := ctx.Value(&contextKey).(appengine.Context)
-	return c
-}
-
-// This is only for classic App Engine adapters.
-func ClassicContextFromContext(ctx netcontext.Context) (appengine.Context, error) {
-	c := fromContext(ctx)
-	if c == nil {
-		return nil, errNotAppEngineContext
-	}
-	return c, nil
-}
-
-func withContext(parent netcontext.Context, c appengine.Context) netcontext.Context {
-	ctx := netcontext.WithValue(parent, &contextKey, c)
-
-	s := &basepb.StringProto{}
-	c.Call("__go__", "GetNamespace", &basepb.VoidProto{}, s, nil)
-	if ns := s.GetValue(); ns != "" {
-		ctx = NamespacedContext(ctx, ns)
-	}
-
-	return ctx
-}
-
-func IncomingHeaders(ctx netcontext.Context) http.Header {
-	if c := fromContext(ctx); c != nil {
-		if req, ok := c.Request().(*http.Request); ok {
-			return req.Header
-		}
-	}
-	return nil
-}
-
-func ReqContext(req *http.Request) netcontext.Context {
-	return WithContext(netcontext.Background(), req)
-}
-
-func WithContext(parent netcontext.Context, req *http.Request) netcontext.Context {
-	c := appengine.NewContext(req)
-	return withContext(parent, c)
-}
-
-type testingContext struct {
-	appengine.Context
-
-	req *http.Request
-}
-
-func (t *testingContext) FullyQualifiedAppID() string { return "dev~testcontext" }
-func (t *testingContext) Call(service, method string, _, _ appengine_internal.ProtoMessage, _ *appengine_internal.CallOptions) error {
-	if service == "__go__" && method == "GetNamespace" {
-		return nil
-	}
-	return fmt.Errorf("testingContext: unsupported Call")
-}
-func (t *testingContext) Request() interface{} { return t.req }
-
-func ContextForTesting(req *http.Request) netcontext.Context {
-	return withContext(netcontext.Background(), &testingContext{req: req})
-}
-
-func Call(ctx netcontext.Context, service, method string, in, out proto.Message) error {
-	if ns := NamespaceFromContext(ctx); ns != "" {
-		if fn, ok := NamespaceMods[service]; ok {
-			fn(in, ns)
-		}
-	}
-
-	if f, ctx, ok := callOverrideFromContext(ctx); ok {
-		return f(ctx, service, method, in, out)
-	}
-
-	// Handle already-done contexts quickly.
-	select {
-	case <-ctx.Done():
-		return ctx.Err()
-	default:
-	}
-
-	c := fromContext(ctx)
-	if c == nil {
-		// Give a good error message rather than a panic lower down.
-		return errNotAppEngineContext
-	}
-
-	// Apply transaction modifications if we're in a transaction.
-	if t := transactionFromContext(ctx); t != nil {
-		if t.finished {
-			return errors.New("transaction context has expired")
-		}
-		applyTransaction(in, &t.transaction)
-	}
-
-	var opts *appengine_internal.CallOptions
-	if d, ok := ctx.Deadline(); ok {
-		opts = &appengine_internal.CallOptions{
-			Timeout: d.Sub(time.Now()),
-		}
-	}
-
-	err := c.Call(service, method, in, out, opts)
-	switch v := err.(type) {
-	case *appengine_internal.APIError:
-		return &APIError{
-			Service: v.Service,
-			Detail:  v.Detail,
-			Code:    v.Code,
-		}
-	case *appengine_internal.CallError:
-		return &CallError{
-			Detail:  v.Detail,
-			Code:    v.Code,
-			Timeout: v.Timeout,
-		}
-	}
-	return err
-}
-
-func handleHTTP(w http.ResponseWriter, r *http.Request) {
-	panic("handleHTTP called; this should be impossible")
-}
-
-func logf(c appengine.Context, level int64, format string, args ...interface{}) {
-	var fn func(format string, args ...interface{})
-	switch level {
-	case 0:
-		fn = c.Debugf
-	case 1:
-		fn = c.Infof
-	case 2:
-		fn = c.Warningf
-	case 3:
-		fn = c.Errorf
-	case 4:
-		fn = c.Criticalf
-	default:
-		// This shouldn't happen.
-		fn = c.Criticalf
-	}
-	fn(format, args...)
-}
diff --git a/vendor/google.golang.org/appengine/internal/api_common.go b/vendor/google.golang.org/appengine/internal/api_common.go
deleted file mode 100644
index e0c0b214b..000000000
--- a/vendor/google.golang.org/appengine/internal/api_common.go
+++ /dev/null
@@ -1,123 +0,0 @@
-// Copyright 2015 Google Inc. All rights reserved.
-// Use of this source code is governed by the Apache 2.0
-// license that can be found in the LICENSE file.
-
-package internal
-
-import (
-	"errors"
-	"os"
-
-	"github.com/golang/protobuf/proto"
-	netcontext "golang.org/x/net/context"
-)
-
-var errNotAppEngineContext = errors.New("not an App Engine context")
-
-type CallOverrideFunc func(ctx netcontext.Context, service, method string, in, out proto.Message) error
-
-var callOverrideKey = "holds []CallOverrideFunc"
-
-func WithCallOverride(ctx netcontext.Context, f CallOverrideFunc) netcontext.Context {
-	// We avoid appending to any existing call override
-	// so we don't risk overwriting a popped stack below.
-	var cofs []CallOverrideFunc
-	if uf, ok := ctx.Value(&callOverrideKey).([]CallOverrideFunc); ok {
-		cofs = append(cofs, uf...)
-	}
-	cofs = append(cofs, f)
-	return netcontext.WithValue(ctx, &callOverrideKey, cofs)
-}
-
-func callOverrideFromContext(ctx netcontext.Context) (CallOverrideFunc, netcontext.Context, bool) {
-	cofs, _ := ctx.Value(&callOverrideKey).([]CallOverrideFunc)
-	if len(cofs) == 0 {
-		return nil, nil, false
-	}
-	// We found a list of overrides; grab the last, and reconstitute a
-	// context that will hide it.
-	f := cofs[len(cofs)-1]
-	ctx = netcontext.WithValue(ctx, &callOverrideKey, cofs[:len(cofs)-1])
-	return f, ctx, true
-}
-
-type logOverrideFunc func(level int64, format string, args ...interface{})
-
-var logOverrideKey = "holds a logOverrideFunc"
-
-func WithLogOverride(ctx netcontext.Context, f logOverrideFunc) netcontext.Context {
-	return netcontext.WithValue(ctx, &logOverrideKey, f)
-}
-
-var appIDOverrideKey = "holds a string, being the full app ID"
-
-func WithAppIDOverride(ctx netcontext.Context, appID string) netcontext.Context {
-	return netcontext.WithValue(ctx, &appIDOverrideKey, appID)
-}
-
-var namespaceKey = "holds the namespace string"
-
-func withNamespace(ctx netcontext.Context, ns string) netcontext.Context {
-	return netcontext.WithValue(ctx, &namespaceKey, ns)
-}
-
-func NamespaceFromContext(ctx netcontext.Context) string {
-	// If there's no namespace, return the empty string.
-	ns, _ := ctx.Value(&namespaceKey).(string)
-	return ns
-}
-
-// FullyQualifiedAppID returns the fully-qualified application ID.
-// This may contain a partition prefix (e.g. "s~" for High Replication apps),
-// or a domain prefix (e.g. "example.com:").
-func FullyQualifiedAppID(ctx netcontext.Context) string {
-	if id, ok := ctx.Value(&appIDOverrideKey).(string); ok {
-		return id
-	}
-	return fullyQualifiedAppID(ctx)
-}
-
-func Logf(ctx netcontext.Context, level int64, format string, args ...interface{}) {
-	if f, ok := ctx.Value(&logOverrideKey).(logOverrideFunc); ok {
-		f(level, format, args...)
-		return
-	}
-	c := fromContext(ctx)
-	if c == nil {
-		panic(errNotAppEngineContext)
-	}
-	logf(c, level, format, args...)
-}
-
-// NamespacedContext wraps a Context to support namespaces.
-func NamespacedContext(ctx netcontext.Context, namespace string) netcontext.Context {
-	return withNamespace(ctx, namespace)
-}
-
-// SetTestEnv sets the env variables for testing background ticket in Flex.
-func SetTestEnv() func() {
-	var environ = []struct {
-		key, value string
-	}{
-		{"GAE_LONG_APP_ID", "my-app-id"},
-		{"GAE_MINOR_VERSION", "067924799508853122"},
-		{"GAE_MODULE_INSTANCE", "0"},
-		{"GAE_MODULE_NAME", "default"},
-		{"GAE_MODULE_VERSION", "20150612t184001"},
-	}
-
-	for _, v := range environ {
-		old := os.Getenv(v.key)
-		os.Setenv(v.key, v.value)
-		v.value = old
-	}
-	return func() { // Restore old environment after the test completes.
-		for _, v := range environ {
-			if v.value == "" {
-				os.Unsetenv(v.key)
-				continue
-			}
-			os.Setenv(v.key, v.value)
-		}
-	}
-}
diff --git a/vendor/google.golang.org/appengine/internal/api_pre17.go b/vendor/google.golang.org/appengine/internal/api_pre17.go
deleted file mode 100644
index 028b4f056..000000000
--- a/vendor/google.golang.org/appengine/internal/api_pre17.go
+++ /dev/null
@@ -1,682 +0,0 @@
-// Copyright 2011 Google Inc. All rights reserved.
-// Use of this source code is governed by the Apache 2.0
-// license that can be found in the LICENSE file.
-
-// +build !appengine
-// +build !go1.7
-
-package internal
-
-import (
-	"bytes"
-	"errors"
-	"fmt"
-	"io/ioutil"
-	"log"
-	"net"
-	"net/http"
-	"net/url"
-	"os"
-	"runtime"
-	"strconv"
-	"strings"
-	"sync"
-	"sync/atomic"
-	"time"
-
-	"github.com/golang/protobuf/proto"
-	netcontext "golang.org/x/net/context"
-
-	basepb "google.golang.org/appengine/internal/base"
-	logpb "google.golang.org/appengine/internal/log"
-	remotepb "google.golang.org/appengine/internal/remote_api"
-)
-
-const (
-	apiPath             = "/rpc_http"
-	defaultTicketSuffix = "/default.20150612t184001.0"
-)
-
-var (
-	// Incoming headers.
-	ticketHeader       = http.CanonicalHeaderKey("X-AppEngine-API-Ticket")
-	dapperHeader       = http.CanonicalHeaderKey("X-Google-DapperTraceInfo")
-	traceHeader        = http.CanonicalHeaderKey("X-Cloud-Trace-Context")
-	curNamespaceHeader = http.CanonicalHeaderKey("X-AppEngine-Current-Namespace")
-	userIPHeader       = http.CanonicalHeaderKey("X-AppEngine-User-IP")
-	remoteAddrHeader   = http.CanonicalHeaderKey("X-AppEngine-Remote-Addr")
-
-	// Outgoing headers.
-	apiEndpointHeader      = http.CanonicalHeaderKey("X-Google-RPC-Service-Endpoint")
-	apiEndpointHeaderValue = []string{"app-engine-apis"}
-	apiMethodHeader        = http.CanonicalHeaderKey("X-Google-RPC-Service-Method")
-	apiMethodHeaderValue   = []string{"/VMRemoteAPI.CallRemoteAPI"}
-	apiDeadlineHeader      = http.CanonicalHeaderKey("X-Google-RPC-Service-Deadline")
-	apiContentType         = http.CanonicalHeaderKey("Content-Type")
-	apiContentTypeValue    = []string{"application/octet-stream"}
-	logFlushHeader         = http.CanonicalHeaderKey("X-AppEngine-Log-Flush-Count")
-
-	apiHTTPClient = &http.Client{
-		Transport: &http.Transport{
-			Proxy: http.ProxyFromEnvironment,
-			Dial:  limitDial,
-		},
-	}
-
-	defaultTicketOnce sync.Once
-	defaultTicket     string
-)
-
-func apiURL() *url.URL {
-	host, port := "appengine.googleapis.internal", "10001"
-	if h := os.Getenv("API_HOST"); h != "" {
-		host = h
-	}
-	if p := os.Getenv("API_PORT"); p != "" {
-		port = p
-	}
-	return &url.URL{
-		Scheme: "http",
-		Host:   host + ":" + port,
-		Path:   apiPath,
-	}
-}
-
-func handleHTTP(w http.ResponseWriter, r *http.Request) {
-	c := &context{
-		req:       r,
-		outHeader: w.Header(),
-		apiURL:    apiURL(),
-	}
-	stopFlushing := make(chan int)
-
-	ctxs.Lock()
-	ctxs.m[r] = c
-	ctxs.Unlock()
-	defer func() {
-		ctxs.Lock()
-		delete(ctxs.m, r)
-		ctxs.Unlock()
-	}()
-
-	// Patch up RemoteAddr so it looks reasonable.
-	if addr := r.Header.Get(userIPHeader); addr != "" {
-		r.RemoteAddr = addr
-	} else if addr = r.Header.Get(remoteAddrHeader); addr != "" {
-		r.RemoteAddr = addr
-	} else {
-		// Should not normally reach here, but pick a sensible default anyway.
-		r.RemoteAddr = "127.0.0.1"
-	}
-	// The address in the headers will most likely be of these forms:
-	//	123.123.123.123
-	//	2001:db8::1
-	// net/http.Request.RemoteAddr is specified to be in "IP:port" form.
-	if _, _, err := net.SplitHostPort(r.RemoteAddr); err != nil {
-		// Assume the remote address is only a host; add a default port.
-		r.RemoteAddr = net.JoinHostPort(r.RemoteAddr, "80")
-	}
-
-	// Start goroutine responsible for flushing app logs.
-	// This is done after adding c to ctx.m (and stopped before removing it)
-	// because flushing logs requires making an API call.
-	go c.logFlusher(stopFlushing)
-
-	executeRequestSafely(c, r)
-	c.outHeader = nil // make sure header changes aren't respected any more
-
-	stopFlushing <- 1 // any logging beyond this point will be dropped
-
-	// Flush any pending logs asynchronously.
-	c.pendingLogs.Lock()
-	flushes := c.pendingLogs.flushes
-	if len(c.pendingLogs.lines) > 0 {
-		flushes++
-	}
-	c.pendingLogs.Unlock()
-	go c.flushLog(false)
-	w.Header().Set(logFlushHeader, strconv.Itoa(flushes))
-
-	// Avoid nil Write call if c.Write is never called.
-	if c.outCode != 0 {
-		w.WriteHeader(c.outCode)
-	}
-	if c.outBody != nil {
-		w.Write(c.outBody)
-	}
-}
-
-func executeRequestSafely(c *context, r *http.Request) {
-	defer func() {
-		if x := recover(); x != nil {
-			logf(c, 4, "%s", renderPanic(x)) // 4 == critical
-			c.outCode = 500
-		}
-	}()
-
-	http.DefaultServeMux.ServeHTTP(c, r)
-}
-
-func renderPanic(x interface{}) string {
-	buf := make([]byte, 16<<10) // 16 KB should be plenty
-	buf = buf[:runtime.Stack(buf, false)]
-
-	// Remove the first few stack frames:
-	//   this func
-	//   the recover closure in the caller
-	// That will root the stack trace at the site of the panic.
-	const (
-		skipStart  = "internal.renderPanic"
-		skipFrames = 2
-	)
-	start := bytes.Index(buf, []byte(skipStart))
-	p := start
-	for i := 0; i < skipFrames*2 && p+1 < len(buf); i++ {
-		p = bytes.IndexByte(buf[p+1:], '\n') + p + 1
-		if p < 0 {
-			break
-		}
-	}
-	if p >= 0 {
-		// buf[start:p+1] is the block to remove.
-		// Copy buf[p+1:] over buf[start:] and shrink buf.
-		copy(buf[start:], buf[p+1:])
-		buf = buf[:len(buf)-(p+1-start)]
-	}
-
-	// Add panic heading.
-	head := fmt.Sprintf("panic: %v\n\n", x)
-	if len(head) > len(buf) {
-		// Extremely unlikely to happen.
-		return head
-	}
-	copy(buf[len(head):], buf)
-	copy(buf, head)
-
-	return string(buf)
-}
-
-var ctxs = struct {
-	sync.Mutex
-	m  map[*http.Request]*context
-	bg *context // background context, lazily initialized
-	// dec is used by tests to decorate the netcontext.Context returned
-	// for a given request. This allows tests to add overrides (such as
-	// WithAppIDOverride) to the context. The map is nil outside tests.
-	dec map[*http.Request]func(netcontext.Context) netcontext.Context
-}{
-	m: make(map[*http.Request]*context),
-}
-
-// context represents the context of an in-flight HTTP request.
-// It implements the appengine.Context and http.ResponseWriter interfaces.
-type context struct {
-	req *http.Request
-
-	outCode   int
-	outHeader http.Header
-	outBody   []byte
-
-	pendingLogs struct {
-		sync.Mutex
-		lines   []*logpb.UserAppLogLine
-		flushes int
-	}
-
-	apiURL *url.URL
-}
-
-var contextKey = "holds a *context"
-
-// fromContext returns the App Engine context or nil if ctx is not
-// derived from an App Engine context.
-func fromContext(ctx netcontext.Context) *context {
-	c, _ := ctx.Value(&contextKey).(*context)
-	return c
-}
-
-func withContext(parent netcontext.Context, c *context) netcontext.Context {
-	ctx := netcontext.WithValue(parent, &contextKey, c)
-	if ns := c.req.Header.Get(curNamespaceHeader); ns != "" {
-		ctx = withNamespace(ctx, ns)
-	}
-	return ctx
-}
-
-func toContext(c *context) netcontext.Context {
-	return withContext(netcontext.Background(), c)
-}
-
-func IncomingHeaders(ctx netcontext.Context) http.Header {
-	if c := fromContext(ctx); c != nil {
-		return c.req.Header
-	}
-	return nil
-}
-
-func ReqContext(req *http.Request) netcontext.Context {
-	return WithContext(netcontext.Background(), req)
-}
-
-func WithContext(parent netcontext.Context, req *http.Request) netcontext.Context {
-	ctxs.Lock()
-	c := ctxs.m[req]
-	d := ctxs.dec[req]
-	ctxs.Unlock()
-
-	if d != nil {
-		parent = d(parent)
-	}
-
-	if c == nil {
-		// Someone passed in an http.Request that is not in-flight.
-		// We panic here rather than panicking at a later point
-		// so that stack traces will be more sensible.
-		log.Panic("appengine: NewContext passed an unknown http.Request")
-	}
-	return withContext(parent, c)
-}
-
-// DefaultTicket returns a ticket used for background context or dev_appserver.
-func DefaultTicket() string {
-	defaultTicketOnce.Do(func() {
-		if IsDevAppServer() {
-			defaultTicket = "testapp" + defaultTicketSuffix
-			return
-		}
-		appID := partitionlessAppID()
-		escAppID := strings.Replace(strings.Replace(appID, ":", "_", -1), ".", "_", -1)
-		majVersion := VersionID(nil)
-		if i := strings.Index(majVersion, "."); i > 0 {
-			majVersion = majVersion[:i]
-		}
-		defaultTicket = fmt.Sprintf("%s/%s.%s.%s", escAppID, ModuleName(nil), majVersion, InstanceID())
-	})
-	return defaultTicket
-}
-
-func BackgroundContext() netcontext.Context {
-	ctxs.Lock()
-	defer ctxs.Unlock()
-
-	if ctxs.bg != nil {
-		return toContext(ctxs.bg)
-	}
-
-	// Compute background security ticket.
-	ticket := DefaultTicket()
-
-	ctxs.bg = &context{
-		req: &http.Request{
-			Header: http.Header{
-				ticketHeader: []string{ticket},
-			},
-		},
-		apiURL: apiURL(),
-	}
-
-	// TODO(dsymonds): Wire up the shutdown handler to do a final flush.
-	go ctxs.bg.logFlusher(make(chan int))
-
-	return toContext(ctxs.bg)
-}
-
-// RegisterTestRequest registers the HTTP request req for testing, such that
-// any API calls are sent to the provided URL. It returns a closure to delete
-// the registration.
-// It should only be used by aetest package.
-func RegisterTestRequest(req *http.Request, apiURL *url.URL, decorate func(netcontext.Context) netcontext.Context) (*http.Request, func()) {
-	c := &context{
-		req:    req,
-		apiURL: apiURL,
-	}
-	ctxs.Lock()
-	defer ctxs.Unlock()
-	if _, ok := ctxs.m[req]; ok {
-		log.Panic("req already associated with context")
-	}
-	if _, ok := ctxs.dec[req]; ok {
-		log.Panic("req already associated with context")
-	}
-	if ctxs.dec == nil {
-		ctxs.dec = make(map[*http.Request]func(netcontext.Context) netcontext.Context)
-	}
-	ctxs.m[req] = c
-	ctxs.dec[req] = decorate
-
-	return req, func() {
-		ctxs.Lock()
-		delete(ctxs.m, req)
-		delete(ctxs.dec, req)
-		ctxs.Unlock()
-	}
-}
-
-var errTimeout = &CallError{
-	Detail:  "Deadline exceeded",
-	Code:    int32(remotepb.RpcError_CANCELLED),
-	Timeout: true,
-}
-
-func (c *context) Header() http.Header { return c.outHeader }
-
-// Copied from $GOROOT/src/pkg/net/http/transfer.go. Some response status
-// codes do not permit a response body (nor response entity headers such as
-// Content-Length, Content-Type, etc).
-func bodyAllowedForStatus(status int) bool {
-	switch {
-	case status >= 100 && status <= 199:
-		return false
-	case status == 204:
-		return false
-	case status == 304:
-		return false
-	}
-	return true
-}
-
-func (c *context) Write(b []byte) (int, error) {
-	if c.outCode == 0 {
-		c.WriteHeader(http.StatusOK)
-	}
-	if len(b) > 0 && !bodyAllowedForStatus(c.outCode) {
-		return 0, http.ErrBodyNotAllowed
-	}
-	c.outBody = append(c.outBody, b...)
-	return len(b), nil
-}
-
-func (c *context) WriteHeader(code int) {
-	if c.outCode != 0 {
-		logf(c, 3, "WriteHeader called multiple times on request.") // error level
-		return
-	}
-	c.outCode = code
-}
-
-func (c *context) post(body []byte, timeout time.Duration) (b []byte, err error) {
-	hreq := &http.Request{
-		Method: "POST",
-		URL:    c.apiURL,
-		Header: http.Header{
-			apiEndpointHeader: apiEndpointHeaderValue,
-			apiMethodHeader:   apiMethodHeaderValue,
-			apiContentType:    apiContentTypeValue,
-			apiDeadlineHeader: []string{strconv.FormatFloat(timeout.Seconds(), 'f', -1, 64)},
-		},
-		Body:          ioutil.NopCloser(bytes.NewReader(body)),
-		ContentLength: int64(len(body)),
-		Host:          c.apiURL.Host,
-	}
-	if info := c.req.Header.Get(dapperHeader); info != "" {
-		hreq.Header.Set(dapperHeader, info)
-	}
-	if info := c.req.Header.Get(traceHeader); info != "" {
-		hreq.Header.Set(traceHeader, info)
-	}
-
-	tr := apiHTTPClient.Transport.(*http.Transport)
-
-	var timedOut int32 // atomic; set to 1 if timed out
-	t := time.AfterFunc(timeout, func() {
-		atomic.StoreInt32(&timedOut, 1)
-		tr.CancelRequest(hreq)
-	})
-	defer t.Stop()
-	defer func() {
-		// Check if timeout was exceeded.
-		if atomic.LoadInt32(&timedOut) != 0 {
-			err = errTimeout
-		}
-	}()
-
-	hresp, err := apiHTTPClient.Do(hreq)
-	if err != nil {
-		return nil, &CallError{
-			Detail: fmt.Sprintf("service bridge HTTP failed: %v", err),
-			Code:   int32(remotepb.RpcError_UNKNOWN),
-		}
-	}
-	defer hresp.Body.Close()
-	hrespBody, err := ioutil.ReadAll(hresp.Body)
-	if hresp.StatusCode != 200 {
-		return nil, &CallError{
-			Detail: fmt.Sprintf("service bridge returned HTTP %d (%q)", hresp.StatusCode, hrespBody),
-			Code:   int32(remotepb.RpcError_UNKNOWN),
-		}
-	}
-	if err != nil {
-		return nil, &CallError{
-			Detail: fmt.Sprintf("service bridge response bad: %v", err),
-			Code:   int32(remotepb.RpcError_UNKNOWN),
-		}
-	}
-	return hrespBody, nil
-}
-
-func Call(ctx netcontext.Context, service, method string, in, out proto.Message) error {
-	if ns := NamespaceFromContext(ctx); ns != "" {
-		if fn, ok := NamespaceMods[service]; ok {
-			fn(in, ns)
-		}
-	}
-
-	if f, ctx, ok := callOverrideFromContext(ctx); ok {
-		return f(ctx, service, method, in, out)
-	}
-
-	// Handle already-done contexts quickly.
-	select {
-	case <-ctx.Done():
-		return ctx.Err()
-	default:
-	}
-
-	c := fromContext(ctx)
-	if c == nil {
-		// Give a good error message rather than a panic lower down.
-		return errNotAppEngineContext
-	}
-
-	// Apply transaction modifications if we're in a transaction.
-	if t := transactionFromContext(ctx); t != nil {
-		if t.finished {
-			return errors.New("transaction context has expired")
-		}
-		applyTransaction(in, &t.transaction)
-	}
-
-	// Default RPC timeout is 60s.
-	timeout := 60 * time.Second
-	if deadline, ok := ctx.Deadline(); ok {
-		timeout = deadline.Sub(time.Now())
-	}
-
-	data, err := proto.Marshal(in)
-	if err != nil {
-		return err
-	}
-
-	ticket := c.req.Header.Get(ticketHeader)
-	// Use a test ticket under test environment.
-	if ticket == "" {
-		if appid := ctx.Value(&appIDOverrideKey); appid != nil {
-			ticket = appid.(string) + defaultTicketSuffix
-		}
-	}
-	// Fall back to use background ticket when the request ticket is not available in Flex or dev_appserver.
-	if ticket == "" {
-		ticket = DefaultTicket()
-	}
-	req := &remotepb.Request{
-		ServiceName: &service,
-		Method:      &method,
-		Request:     data,
-		RequestId:   &ticket,
-	}
-	hreqBody, err := proto.Marshal(req)
-	if err != nil {
-		return err
-	}
-
-	hrespBody, err := c.post(hreqBody, timeout)
-	if err != nil {
-		return err
-	}
-
-	res := &remotepb.Response{}
-	if err := proto.Unmarshal(hrespBody, res); err != nil {
-		return err
-	}
-	if res.RpcError != nil {
-		ce := &CallError{
-			Detail: res.RpcError.GetDetail(),
-			Code:   *res.RpcError.Code,
-		}
-		switch remotepb.RpcError_ErrorCode(ce.Code) {
-		case remotepb.RpcError_CANCELLED, remotepb.RpcError_DEADLINE_EXCEEDED:
-			ce.Timeout = true
-		}
-		return ce
-	}
-	if res.ApplicationError != nil {
-		return &APIError{
-			Service: *req.ServiceName,
-			Detail:  res.ApplicationError.GetDetail(),
-			Code:    *res.ApplicationError.Code,
-		}
-	}
-	if res.Exception != nil || res.JavaException != nil {
-		// This shouldn't happen, but let's be defensive.
-		return &CallError{
-			Detail: "service bridge returned exception",
-			Code:   int32(remotepb.RpcError_UNKNOWN),
-		}
-	}
-	return proto.Unmarshal(res.Response, out)
-}
-
-func (c *context) Request() *http.Request {
-	return c.req
-}
-
-func (c *context) addLogLine(ll *logpb.UserAppLogLine) {
-	// Truncate long log lines.
-	// TODO(dsymonds): Check if this is still necessary.
-	const lim = 8 << 10
-	if len(*ll.Message) > lim {
-		suffix := fmt.Sprintf("...(length %d)", len(*ll.Message))
-		ll.Message = proto.String((*ll.Message)[:lim-len(suffix)] + suffix)
-	}
-
-	c.pendingLogs.Lock()
-	c.pendingLogs.lines = append(c.pendingLogs.lines, ll)
-	c.pendingLogs.Unlock()
-}
-
-var logLevelName = map[int64]string{
-	0: "DEBUG",
-	1: "INFO",
-	2: "WARNING",
-	3: "ERROR",
-	4: "CRITICAL",
-}
-
-func logf(c *context, level int64, format string, args ...interface{}) {
-	if c == nil {
-		panic("not an App Engine context")
-	}
-	s := fmt.Sprintf(format, args...)
-	s = strings.TrimRight(s, "\n") // Remove any trailing newline characters.
-	c.addLogLine(&logpb.UserAppLogLine{
-		TimestampUsec: proto.Int64(time.Now().UnixNano() / 1e3),
-		Level:         &level,
-		Message:       &s,
-	})
-	log.Print(logLevelName[level] + ": " + s)
-}
-
-// flushLog attempts to flush any pending logs to the appserver.
-// It should not be called concurrently.
-func (c *context) flushLog(force bool) (flushed bool) {
-	c.pendingLogs.Lock()
-	// Grab up to 30 MB. We can get away with up to 32 MB, but let's be cautious.
-	n, rem := 0, 30<<20
-	for ; n < len(c.pendingLogs.lines); n++ {
-		ll := c.pendingLogs.lines[n]
-		// Each log line will require about 3 bytes of overhead.
-		nb := proto.Size(ll) + 3
-		if nb > rem {
-			break
-		}
-		rem -= nb
-	}
-	lines := c.pendingLogs.lines[:n]
-	c.pendingLogs.lines = c.pendingLogs.lines[n:]
-	c.pendingLogs.Unlock()
-
-	if len(lines) == 0 && !force {
-		// Nothing to flush.
-		return false
-	}
-
-	rescueLogs := false
-	defer func() {
-		if rescueLogs {
-			c.pendingLogs.Lock()
-			c.pendingLogs.lines = append(lines, c.pendingLogs.lines...)
-			c.pendingLogs.Unlock()
-		}
-	}()
-
-	buf, err := proto.Marshal(&logpb.UserAppLogGroup{
-		LogLine: lines,
-	})
-	if err != nil {
-		log.Printf("internal.flushLog: marshaling UserAppLogGroup: %v", err)
-		rescueLogs = true
-		return false
-	}
-
-	req := &logpb.FlushRequest{
-		Logs: buf,
-	}
-	res := &basepb.VoidProto{}
-	c.pendingLogs.Lock()
-	c.pendingLogs.flushes++
-	c.pendingLogs.Unlock()
-	if err := Call(toContext(c), "logservice", "Flush", req, res); err != nil {
-		log.Printf("internal.flushLog: Flush RPC: %v", err)
-		rescueLogs = true
-		return false
-	}
-	return true
-}
-
-const (
-	// Log flushing parameters.
-	flushInterval      = 1 * time.Second
-	forceFlushInterval = 60 * time.Second
-)
-
-func (c *context) logFlusher(stop <-chan int) {
-	lastFlush := time.Now()
-	tick := time.NewTicker(flushInterval)
-	for {
-		select {
-		case <-stop:
-			// Request finished.
-			tick.Stop()
-			return
-		case <-tick.C:
-			force := time.Now().Sub(lastFlush) > forceFlushInterval
-			if c.flushLog(force) {
-				lastFlush = time.Now()
-			}
-		}
-	}
-}
-
-func ContextForTesting(req *http.Request) netcontext.Context {
-	return toContext(&context{req: req})
-}
diff --git a/vendor/google.golang.org/appengine/internal/app_id.go b/vendor/google.golang.org/appengine/internal/app_id.go
deleted file mode 100644
index 11df8c07b..000000000
--- a/vendor/google.golang.org/appengine/internal/app_id.go
+++ /dev/null
@@ -1,28 +0,0 @@
-// Copyright 2011 Google Inc. All rights reserved.
-// Use of this source code is governed by the Apache 2.0
-// license that can be found in the LICENSE file.
-
-package internal
-
-import (
-	"strings"
-)
-
-func parseFullAppID(appid string) (partition, domain, displayID string) {
-	if i := strings.Index(appid, "~"); i != -1 {
-		partition, appid = appid[:i], appid[i+1:]
-	}
-	if i := strings.Index(appid, ":"); i != -1 {
-		domain, appid = appid[:i], appid[i+1:]
-	}
-	return partition, domain, appid
-}
-
-// appID returns "appid" or "domain.com:appid".
-func appID(fullAppID string) string {
-	_, dom, dis := parseFullAppID(fullAppID)
-	if dom != "" {
-		return dom + ":" + dis
-	}
-	return dis
-}
diff --git a/vendor/google.golang.org/appengine/internal/app_identity/app_identity_service.pb.go b/vendor/google.golang.org/appengine/internal/app_identity/app_identity_service.pb.go
deleted file mode 100644
index 9a2ff77ab..000000000
--- a/vendor/google.golang.org/appengine/internal/app_identity/app_identity_service.pb.go
+++ /dev/null
@@ -1,611 +0,0 @@
-// Code generated by protoc-gen-go. DO NOT EDIT.
-// source: google.golang.org/appengine/internal/app_identity/app_identity_service.proto
-
-package app_identity
-
-import proto "github.com/golang/protobuf/proto"
-import fmt "fmt"
-import math "math"
-
-// Reference imports to suppress errors if they are not otherwise used.
-var _ = proto.Marshal
-var _ = fmt.Errorf
-var _ = math.Inf
-
-// This is a compile-time assertion to ensure that this generated file
-// is compatible with the proto package it is being compiled against.
-// A compilation error at this line likely means your copy of the
-// proto package needs to be updated.
-const _ = proto.ProtoPackageIsVersion2 // please upgrade the proto package
-
-type AppIdentityServiceError_ErrorCode int32
-
-const (
-	AppIdentityServiceError_SUCCESS           AppIdentityServiceError_ErrorCode = 0
-	AppIdentityServiceError_UNKNOWN_SCOPE     AppIdentityServiceError_ErrorCode = 9
-	AppIdentityServiceError_BLOB_TOO_LARGE    AppIdentityServiceError_ErrorCode = 1000
-	AppIdentityServiceError_DEADLINE_EXCEEDED AppIdentityServiceError_ErrorCode = 1001
-	AppIdentityServiceError_NOT_A_VALID_APP   AppIdentityServiceError_ErrorCode = 1002
-	AppIdentityServiceError_UNKNOWN_ERROR     AppIdentityServiceError_ErrorCode = 1003
-	AppIdentityServiceError_NOT_ALLOWED       AppIdentityServiceError_ErrorCode = 1005
-	AppIdentityServiceError_NOT_IMPLEMENTED   AppIdentityServiceError_ErrorCode = 1006
-)
-
-var AppIdentityServiceError_ErrorCode_name = map[int32]string{
-	0:    "SUCCESS",
-	9:    "UNKNOWN_SCOPE",
-	1000: "BLOB_TOO_LARGE",
-	1001: "DEADLINE_EXCEEDED",
-	1002: "NOT_A_VALID_APP",
-	1003: "UNKNOWN_ERROR",
-	1005: "NOT_ALLOWED",
-	1006: "NOT_IMPLEMENTED",
-}
-var AppIdentityServiceError_ErrorCode_value = map[string]int32{
-	"SUCCESS":           0,
-	"UNKNOWN_SCOPE":     9,
-	"BLOB_TOO_LARGE":    1000,
-	"DEADLINE_EXCEEDED": 1001,
-	"NOT_A_VALID_APP":   1002,
-	"UNKNOWN_ERROR":     1003,
-	"NOT_ALLOWED":       1005,
-	"NOT_IMPLEMENTED":   1006,
-}
-
-func (x AppIdentityServiceError_ErrorCode) Enum() *AppIdentityServiceError_ErrorCode {
-	p := new(AppIdentityServiceError_ErrorCode)
-	*p = x
-	return p
-}
-func (x AppIdentityServiceError_ErrorCode) String() string {
-	return proto.EnumName(AppIdentityServiceError_ErrorCode_name, int32(x))
-}
-func (x *AppIdentityServiceError_ErrorCode) UnmarshalJSON(data []byte) error {
-	value, err := proto.UnmarshalJSONEnum(AppIdentityServiceError_ErrorCode_value, data, "AppIdentityServiceError_ErrorCode")
-	if err != nil {
-		return err
-	}
-	*x = AppIdentityServiceError_ErrorCode(value)
-	return nil
-}
-func (AppIdentityServiceError_ErrorCode) EnumDescriptor() ([]byte, []int) {
-	return fileDescriptor_app_identity_service_08a6e3f74b04cfa4, []int{0, 0}
-}
-
-type AppIdentityServiceError struct {
-	XXX_NoUnkeyedLiteral struct{} `json:"-"`
-	XXX_unrecognized     []byte   `json:"-"`
-	XXX_sizecache        int32    `json:"-"`
-}
-
-func (m *AppIdentityServiceError) Reset()         { *m = AppIdentityServiceError{} }
-func (m *AppIdentityServiceError) String() string { return proto.CompactTextString(m) }
-func (*AppIdentityServiceError) ProtoMessage()    {}
-func (*AppIdentityServiceError) Descriptor() ([]byte, []int) {
-	return fileDescriptor_app_identity_service_08a6e3f74b04cfa4, []int{0}
-}
-func (m *AppIdentityServiceError) XXX_Unmarshal(b []byte) error {
-	return xxx_messageInfo_AppIdentityServiceError.Unmarshal(m, b)
-}
-func (m *AppIdentityServiceError) XXX_Marshal(b []byte, deterministic bool) ([]byte, error) {
-	return xxx_messageInfo_AppIdentityServiceError.Marshal(b, m, deterministic)
-}
-func (dst *AppIdentityServiceError) XXX_Merge(src proto.Message) {
-	xxx_messageInfo_AppIdentityServiceError.Merge(dst, src)
-}
-func (m *AppIdentityServiceError) XXX_Size() int {
-	return xxx_messageInfo_AppIdentityServiceError.Size(m)
-}
-func (m *AppIdentityServiceError) XXX_DiscardUnknown() {
-	xxx_messageInfo_AppIdentityServiceError.DiscardUnknown(m)
-}
-
-var xxx_messageInfo_AppIdentityServiceError proto.InternalMessageInfo
-
-type SignForAppRequest struct {
-	BytesToSign          []byte   `protobuf:"bytes,1,opt,name=bytes_to_sign,json=bytesToSign" json:"bytes_to_sign,omitempty"`
-	XXX_NoUnkeyedLiteral struct{} `json:"-"`
-	XXX_unrecognized     []byte   `json:"-"`
-	XXX_sizecache        int32    `json:"-"`
-}
-
-func (m *SignForAppRequest) Reset()         { *m = SignForAppRequest{} }
-func (m *SignForAppRequest) String() string { return proto.CompactTextString(m) }
-func (*SignForAppRequest) ProtoMessage()    {}
-func (*SignForAppRequest) Descriptor() ([]byte, []int) {
-	return fileDescriptor_app_identity_service_08a6e3f74b04cfa4, []int{1}
-}
-func (m *SignForAppRequest) XXX_Unmarshal(b []byte) error {
-	return xxx_messageInfo_SignForAppRequest.Unmarshal(m, b)
-}
-func (m *SignForAppRequest) XXX_Marshal(b []byte, deterministic bool) ([]byte, error) {
-	return xxx_messageInfo_SignForAppRequest.Marshal(b, m, deterministic)
-}
-func (dst *SignForAppRequest) XXX_Merge(src proto.Message) {
-	xxx_messageInfo_SignForAppRequest.Merge(dst, src)
-}
-func (m *SignForAppRequest) XXX_Size() int {
-	return xxx_messageInfo_SignForAppRequest.Size(m)
-}
-func (m *SignForAppRequest) XXX_DiscardUnknown() {
-	xxx_messageInfo_SignForAppRequest.DiscardUnknown(m)
-}
-
-var xxx_messageInfo_SignForAppRequest proto.InternalMessageInfo
-
-func (m *SignForAppRequest) GetBytesToSign() []byte {
-	if m != nil {
-		return m.BytesToSign
-	}
-	return nil
-}
-
-type SignForAppResponse struct {
-	KeyName              *string  `protobuf:"bytes,1,opt,name=key_name,json=keyName" json:"key_name,omitempty"`
-	SignatureBytes       []byte   `protobuf:"bytes,2,opt,name=signature_bytes,json=signatureBytes" json:"signature_bytes,omitempty"`
-	XXX_NoUnkeyedLiteral struct{} `json:"-"`
-	XXX_unrecognized     []byte   `json:"-"`
-	XXX_sizecache        int32    `json:"-"`
-}
-
-func (m *SignForAppResponse) Reset()         { *m = SignForAppResponse{} }
-func (m *SignForAppResponse) String() string { return proto.CompactTextString(m) }
-func (*SignForAppResponse) ProtoMessage()    {}
-func (*SignForAppResponse) Descriptor() ([]byte, []int) {
-	return fileDescriptor_app_identity_service_08a6e3f74b04cfa4, []int{2}
-}
-func (m *SignForAppResponse) XXX_Unmarshal(b []byte) error {
-	return xxx_messageInfo_SignForAppResponse.Unmarshal(m, b)
-}
-func (m *SignForAppResponse) XXX_Marshal(b []byte, deterministic bool) ([]byte, error) {
-	return xxx_messageInfo_SignForAppResponse.Marshal(b, m, deterministic)
-}
-func (dst *SignForAppResponse) XXX_Merge(src proto.Message) {
-	xxx_messageInfo_SignForAppResponse.Merge(dst, src)
-}
-func (m *SignForAppResponse) XXX_Size() int {
-	return xxx_messageInfo_SignForAppResponse.Size(m)
-}
-func (m *SignForAppResponse) XXX_DiscardUnknown() {
-	xxx_messageInfo_SignForAppResponse.DiscardUnknown(m)
-}
-
-var xxx_messageInfo_SignForAppResponse proto.InternalMessageInfo
-
-func (m *SignForAppResponse) GetKeyName() string {
-	if m != nil && m.KeyName != nil {
-		return *m.KeyName
-	}
-	return ""
-}
-
-func (m *SignForAppResponse) GetSignatureBytes() []byte {
-	if m != nil {
-		return m.SignatureBytes
-	}
-	return nil
-}
-
-type GetPublicCertificateForAppRequest struct {
-	XXX_NoUnkeyedLiteral struct{} `json:"-"`
-	XXX_unrecognized     []byte   `json:"-"`
-	XXX_sizecache        int32    `json:"-"`
-}
-
-func (m *GetPublicCertificateForAppRequest) Reset()         { *m = GetPublicCertificateForAppRequest{} }
-func (m *GetPublicCertificateForAppRequest) String() string { return proto.CompactTextString(m) }
-func (*GetPublicCertificateForAppRequest) ProtoMessage()    {}
-func (*GetPublicCertificateForAppRequest) Descriptor() ([]byte, []int) {
-	return fileDescriptor_app_identity_service_08a6e3f74b04cfa4, []int{3}
-}
-func (m *GetPublicCertificateForAppRequest) XXX_Unmarshal(b []byte) error {
-	return xxx_messageInfo_GetPublicCertificateForAppRequest.Unmarshal(m, b)
-}
-func (m *GetPublicCertificateForAppRequest) XXX_Marshal(b []byte, deterministic bool) ([]byte, error) {
-	return xxx_messageInfo_GetPublicCertificateForAppRequest.Marshal(b, m, deterministic)
-}
-func (dst *GetPublicCertificateForAppRequest) XXX_Merge(src proto.Message) {
-	xxx_messageInfo_GetPublicCertificateForAppRequest.Merge(dst, src)
-}
-func (m *GetPublicCertificateForAppRequest) XXX_Size() int {
-	return xxx_messageInfo_GetPublicCertificateForAppRequest.Size(m)
-}
-func (m *GetPublicCertificateForAppRequest) XXX_DiscardUnknown() {
-	xxx_messageInfo_GetPublicCertificateForAppRequest.DiscardUnknown(m)
-}
-
-var xxx_messageInfo_GetPublicCertificateForAppRequest proto.InternalMessageInfo
-
-type PublicCertificate struct {
-	KeyName              *string  `protobuf:"bytes,1,opt,name=key_name,json=keyName" json:"key_name,omitempty"`
-	X509CertificatePem   *string  `protobuf:"bytes,2,opt,name=x509_certificate_pem,json=x509CertificatePem" json:"x509_certificate_pem,omitempty"`
-	XXX_NoUnkeyedLiteral struct{} `json:"-"`
-	XXX_unrecognized     []byte   `json:"-"`
-	XXX_sizecache        int32    `json:"-"`
-}
-
-func (m *PublicCertificate) Reset()         { *m = PublicCertificate{} }
-func (m *PublicCertificate) String() string { return proto.CompactTextString(m) }
-func (*PublicCertificate) ProtoMessage()    {}
-func (*PublicCertificate) Descriptor() ([]byte, []int) {
-	return fileDescriptor_app_identity_service_08a6e3f74b04cfa4, []int{4}
-}
-func (m *PublicCertificate) XXX_Unmarshal(b []byte) error {
-	return xxx_messageInfo_PublicCertificate.Unmarshal(m, b)
-}
-func (m *PublicCertificate) XXX_Marshal(b []byte, deterministic bool) ([]byte, error) {
-	return xxx_messageInfo_PublicCertificate.Marshal(b, m, deterministic)
-}
-func (dst *PublicCertificate) XXX_Merge(src proto.Message) {
-	xxx_messageInfo_PublicCertificate.Merge(dst, src)
-}
-func (m *PublicCertificate) XXX_Size() int {
-	return xxx_messageInfo_PublicCertificate.Size(m)
-}
-func (m *PublicCertificate) XXX_DiscardUnknown() {
-	xxx_messageInfo_PublicCertificate.DiscardUnknown(m)
-}
-
-var xxx_messageInfo_PublicCertificate proto.InternalMessageInfo
-
-func (m *PublicCertificate) GetKeyName() string {
-	if m != nil && m.KeyName != nil {
-		return *m.KeyName
-	}
-	return ""
-}
-
-func (m *PublicCertificate) GetX509CertificatePem() string {
-	if m != nil && m.X509CertificatePem != nil {
-		return *m.X509CertificatePem
-	}
-	return ""
-}
-
-type GetPublicCertificateForAppResponse struct {
-	PublicCertificateList      []*PublicCertificate `protobuf:"bytes,1,rep,name=public_certificate_list,json=publicCertificateList" json:"public_certificate_list,omitempty"`
-	MaxClientCacheTimeInSecond *int64               `protobuf:"varint,2,opt,name=max_client_cache_time_in_second,json=maxClientCacheTimeInSecond" json:"max_client_cache_time_in_second,omitempty"`
-	XXX_NoUnkeyedLiteral       struct{}             `json:"-"`
-	XXX_unrecognized           []byte               `json:"-"`
-	XXX_sizecache              int32                `json:"-"`
-}
-
-func (m *GetPublicCertificateForAppResponse) Reset()         { *m = GetPublicCertificateForAppResponse{} }
-func (m *GetPublicCertificateForAppResponse) String() string { return proto.CompactTextString(m) }
-func (*GetPublicCertificateForAppResponse) ProtoMessage()    {}
-func (*GetPublicCertificateForAppResponse) Descriptor() ([]byte, []int) {
-	return fileDescriptor_app_identity_service_08a6e3f74b04cfa4, []int{5}
-}
-func (m *GetPublicCertificateForAppResponse) XXX_Unmarshal(b []byte) error {
-	return xxx_messageInfo_GetPublicCertificateForAppResponse.Unmarshal(m, b)
-}
-func (m *GetPublicCertificateForAppResponse) XXX_Marshal(b []byte, deterministic bool) ([]byte, error) {
-	return xxx_messageInfo_GetPublicCertificateForAppResponse.Marshal(b, m, deterministic)
-}
-func (dst *GetPublicCertificateForAppResponse) XXX_Merge(src proto.Message) {
-	xxx_messageInfo_GetPublicCertificateForAppResponse.Merge(dst, src)
-}
-func (m *GetPublicCertificateForAppResponse) XXX_Size() int {
-	return xxx_messageInfo_GetPublicCertificateForAppResponse.Size(m)
-}
-func (m *GetPublicCertificateForAppResponse) XXX_DiscardUnknown() {
-	xxx_messageInfo_GetPublicCertificateForAppResponse.DiscardUnknown(m)
-}
-
-var xxx_messageInfo_GetPublicCertificateForAppResponse proto.InternalMessageInfo
-
-func (m *GetPublicCertificateForAppResponse) GetPublicCertificateList() []*PublicCertificate {
-	if m != nil {
-		return m.PublicCertificateList
-	}
-	return nil
-}
-
-func (m *GetPublicCertificateForAppResponse) GetMaxClientCacheTimeInSecond() int64 {
-	if m != nil && m.MaxClientCacheTimeInSecond != nil {
-		return *m.MaxClientCacheTimeInSecond
-	}
-	return 0
-}
-
-type GetServiceAccountNameRequest struct {
-	XXX_NoUnkeyedLiteral struct{} `json:"-"`
-	XXX_unrecognized     []byte   `json:"-"`
-	XXX_sizecache        int32    `json:"-"`
-}
-
-func (m *GetServiceAccountNameRequest) Reset()         { *m = GetServiceAccountNameRequest{} }
-func (m *GetServiceAccountNameRequest) String() string { return proto.CompactTextString(m) }
-func (*GetServiceAccountNameRequest) ProtoMessage()    {}
-func (*GetServiceAccountNameRequest) Descriptor() ([]byte, []int) {
-	return fileDescriptor_app_identity_service_08a6e3f74b04cfa4, []int{6}
-}
-func (m *GetServiceAccountNameRequest) XXX_Unmarshal(b []byte) error {
-	return xxx_messageInfo_GetServiceAccountNameRequest.Unmarshal(m, b)
-}
-func (m *GetServiceAccountNameRequest) XXX_Marshal(b []byte, deterministic bool) ([]byte, error) {
-	return xxx_messageInfo_GetServiceAccountNameRequest.Marshal(b, m, deterministic)
-}
-func (dst *GetServiceAccountNameRequest) XXX_Merge(src proto.Message) {
-	xxx_messageInfo_GetServiceAccountNameRequest.Merge(dst, src)
-}
-func (m *GetServiceAccountNameRequest) XXX_Size() int {
-	return xxx_messageInfo_GetServiceAccountNameRequest.Size(m)
-}
-func (m *GetServiceAccountNameRequest) XXX_DiscardUnknown() {
-	xxx_messageInfo_GetServiceAccountNameRequest.DiscardUnknown(m)
-}
-
-var xxx_messageInfo_GetServiceAccountNameRequest proto.InternalMessageInfo
-
-type GetServiceAccountNameResponse struct {
-	ServiceAccountName   *string  `protobuf:"bytes,1,opt,name=service_account_name,json=serviceAccountName" json:"service_account_name,omitempty"`
-	XXX_NoUnkeyedLiteral struct{} `json:"-"`
-	XXX_unrecognized     []byte   `json:"-"`
-	XXX_sizecache        int32    `json:"-"`
-}
-
-func (m *GetServiceAccountNameResponse) Reset()         { *m = GetServiceAccountNameResponse{} }
-func (m *GetServiceAccountNameResponse) String() string { return proto.CompactTextString(m) }
-func (*GetServiceAccountNameResponse) ProtoMessage()    {}
-func (*GetServiceAccountNameResponse) Descriptor() ([]byte, []int) {
-	return fileDescriptor_app_identity_service_08a6e3f74b04cfa4, []int{7}
-}
-func (m *GetServiceAccountNameResponse) XXX_Unmarshal(b []byte) error {
-	return xxx_messageInfo_GetServiceAccountNameResponse.Unmarshal(m, b)
-}
-func (m *GetServiceAccountNameResponse) XXX_Marshal(b []byte, deterministic bool) ([]byte, error) {
-	return xxx_messageInfo_GetServiceAccountNameResponse.Marshal(b, m, deterministic)
-}
-func (dst *GetServiceAccountNameResponse) XXX_Merge(src proto.Message) {
-	xxx_messageInfo_GetServiceAccountNameResponse.Merge(dst, src)
-}
-func (m *GetServiceAccountNameResponse) XXX_Size() int {
-	return xxx_messageInfo_GetServiceAccountNameResponse.Size(m)
-}
-func (m *GetServiceAccountNameResponse) XXX_DiscardUnknown() {
-	xxx_messageInfo_GetServiceAccountNameResponse.DiscardUnknown(m)
-}
-
-var xxx_messageInfo_GetServiceAccountNameResponse proto.InternalMessageInfo
-
-func (m *GetServiceAccountNameResponse) GetServiceAccountName() string {
-	if m != nil && m.ServiceAccountName != nil {
-		return *m.ServiceAccountName
-	}
-	return ""
-}
-
-type GetAccessTokenRequest struct {
-	Scope                []string `protobuf:"bytes,1,rep,name=scope" json:"scope,omitempty"`
-	ServiceAccountId     *int64   `protobuf:"varint,2,opt,name=service_account_id,json=serviceAccountId" json:"service_account_id,omitempty"`
-	ServiceAccountName   *string  `protobuf:"bytes,3,opt,name=service_account_name,json=serviceAccountName" json:"service_account_name,omitempty"`
-	XXX_NoUnkeyedLiteral struct{} `json:"-"`
-	XXX_unrecognized     []byte   `json:"-"`
-	XXX_sizecache        int32    `json:"-"`
-}
-
-func (m *GetAccessTokenRequest) Reset()         { *m = GetAccessTokenRequest{} }
-func (m *GetAccessTokenRequest) String() string { return proto.CompactTextString(m) }
-func (*GetAccessTokenRequest) ProtoMessage()    {}
-func (*GetAccessTokenRequest) Descriptor() ([]byte, []int) {
-	return fileDescriptor_app_identity_service_08a6e3f74b04cfa4, []int{8}
-}
-func (m *GetAccessTokenRequest) XXX_Unmarshal(b []byte) error {
-	return xxx_messageInfo_GetAccessTokenRequest.Unmarshal(m, b)
-}
-func (m *GetAccessTokenRequest) XXX_Marshal(b []byte, deterministic bool) ([]byte, error) {
-	return xxx_messageInfo_GetAccessTokenRequest.Marshal(b, m, deterministic)
-}
-func (dst *GetAccessTokenRequest) XXX_Merge(src proto.Message) {
-	xxx_messageInfo_GetAccessTokenRequest.Merge(dst, src)
-}
-func (m *GetAccessTokenRequest) XXX_Size() int {
-	return xxx_messageInfo_GetAccessTokenRequest.Size(m)
-}
-func (m *GetAccessTokenRequest) XXX_DiscardUnknown() {
-	xxx_messageInfo_GetAccessTokenRequest.DiscardUnknown(m)
-}
-
-var xxx_messageInfo_GetAccessTokenRequest proto.InternalMessageInfo
-
-func (m *GetAccessTokenRequest) GetScope() []string {
-	if m != nil {
-		return m.Scope
-	}
-	return nil
-}
-
-func (m *GetAccessTokenRequest) GetServiceAccountId() int64 {
-	if m != nil && m.ServiceAccountId != nil {
-		return *m.ServiceAccountId
-	}
-	return 0
-}
-
-func (m *GetAccessTokenRequest) GetServiceAccountName() string {
-	if m != nil && m.ServiceAccountName != nil {
-		return *m.ServiceAccountName
-	}
-	return ""
-}
-
-type GetAccessTokenResponse struct {
-	AccessToken          *string  `protobuf:"bytes,1,opt,name=access_token,json=accessToken" json:"access_token,omitempty"`
-	ExpirationTime       *int64   `protobuf:"varint,2,opt,name=expiration_time,json=expirationTime" json:"expiration_time,omitempty"`
-	XXX_NoUnkeyedLiteral struct{} `json:"-"`
-	XXX_unrecognized     []byte   `json:"-"`
-	XXX_sizecache        int32    `json:"-"`
-}
-
-func (m *GetAccessTokenResponse) Reset()         { *m = GetAccessTokenResponse{} }
-func (m *GetAccessTokenResponse) String() string { return proto.CompactTextString(m) }
-func (*GetAccessTokenResponse) ProtoMessage()    {}
-func (*GetAccessTokenResponse) Descriptor() ([]byte, []int) {
-	return fileDescriptor_app_identity_service_08a6e3f74b04cfa4, []int{9}
-}
-func (m *GetAccessTokenResponse) XXX_Unmarshal(b []byte) error {
-	return xxx_messageInfo_GetAccessTokenResponse.Unmarshal(m, b)
-}
-func (m *GetAccessTokenResponse) XXX_Marshal(b []byte, deterministic bool) ([]byte, error) {
-	return xxx_messageInfo_GetAccessTokenResponse.Marshal(b, m, deterministic)
-}
-func (dst *GetAccessTokenResponse) XXX_Merge(src proto.Message) {
-	xxx_messageInfo_GetAccessTokenResponse.Merge(dst, src)
-}
-func (m *GetAccessTokenResponse) XXX_Size() int {
-	return xxx_messageInfo_GetAccessTokenResponse.Size(m)
-}
-func (m *GetAccessTokenResponse) XXX_DiscardUnknown() {
-	xxx_messageInfo_GetAccessTokenResponse.DiscardUnknown(m)
-}
-
-var xxx_messageInfo_GetAccessTokenResponse proto.InternalMessageInfo
-
-func (m *GetAccessTokenResponse) GetAccessToken() string {
-	if m != nil && m.AccessToken != nil {
-		return *m.AccessToken
-	}
-	return ""
-}
-
-func (m *GetAccessTokenResponse) GetExpirationTime() int64 {
-	if m != nil && m.ExpirationTime != nil {
-		return *m.ExpirationTime
-	}
-	return 0
-}
-
-type GetDefaultGcsBucketNameRequest struct {
-	XXX_NoUnkeyedLiteral struct{} `json:"-"`
-	XXX_unrecognized     []byte   `json:"-"`
-	XXX_sizecache        int32    `json:"-"`
-}
-
-func (m *GetDefaultGcsBucketNameRequest) Reset()         { *m = GetDefaultGcsBucketNameRequest{} }
-func (m *GetDefaultGcsBucketNameRequest) String() string { return proto.CompactTextString(m) }
-func (*GetDefaultGcsBucketNameRequest) ProtoMessage()    {}
-func (*GetDefaultGcsBucketNameRequest) Descriptor() ([]byte, []int) {
-	return fileDescriptor_app_identity_service_08a6e3f74b04cfa4, []int{10}
-}
-func (m *GetDefaultGcsBucketNameRequest) XXX_Unmarshal(b []byte) error {
-	return xxx_messageInfo_GetDefaultGcsBucketNameRequest.Unmarshal(m, b)
-}
-func (m *GetDefaultGcsBucketNameRequest) XXX_Marshal(b []byte, deterministic bool) ([]byte, error) {
-	return xxx_messageInfo_GetDefaultGcsBucketNameRequest.Marshal(b, m, deterministic)
-}
-func (dst *GetDefaultGcsBucketNameRequest) XXX_Merge(src proto.Message) {
-	xxx_messageInfo_GetDefaultGcsBucketNameRequest.Merge(dst, src)
-}
-func (m *GetDefaultGcsBucketNameRequest) XXX_Size() int {
-	return xxx_messageInfo_GetDefaultGcsBucketNameRequest.Size(m)
-}
-func (m *GetDefaultGcsBucketNameRequest) XXX_DiscardUnknown() {
-	xxx_messageInfo_GetDefaultGcsBucketNameRequest.DiscardUnknown(m)
-}
-
-var xxx_messageInfo_GetDefaultGcsBucketNameRequest proto.InternalMessageInfo
-
-type GetDefaultGcsBucketNameResponse struct {
-	DefaultGcsBucketName *string  `protobuf:"bytes,1,opt,name=default_gcs_bucket_name,json=defaultGcsBucketName" json:"default_gcs_bucket_name,omitempty"`
-	XXX_NoUnkeyedLiteral struct{} `json:"-"`
-	XXX_unrecognized     []byte   `json:"-"`
-	XXX_sizecache        int32    `json:"-"`
-}
-
-func (m *GetDefaultGcsBucketNameResponse) Reset()         { *m = GetDefaultGcsBucketNameResponse{} }
-func (m *GetDefaultGcsBucketNameResponse) String() string { return proto.CompactTextString(m) }
-func (*GetDefaultGcsBucketNameResponse) ProtoMessage()    {}
-func (*GetDefaultGcsBucketNameResponse) Descriptor() ([]byte, []int) {
-	return fileDescriptor_app_identity_service_08a6e3f74b04cfa4, []int{11}
-}
-func (m *GetDefaultGcsBucketNameResponse) XXX_Unmarshal(b []byte) error {
-	return xxx_messageInfo_GetDefaultGcsBucketNameResponse.Unmarshal(m, b)
-}
-func (m *GetDefaultGcsBucketNameResponse) XXX_Marshal(b []byte, deterministic bool) ([]byte, error) {
-	return xxx_messageInfo_GetDefaultGcsBucketNameResponse.Marshal(b, m, deterministic)
-}
-func (dst *GetDefaultGcsBucketNameResponse) XXX_Merge(src proto.Message) {
-	xxx_messageInfo_GetDefaultGcsBucketNameResponse.Merge(dst, src)
-}
-func (m *GetDefaultGcsBucketNameResponse) XXX_Size() int {
-	return xxx_messageInfo_GetDefaultGcsBucketNameResponse.Size(m)
-}
-func (m *GetDefaultGcsBucketNameResponse) XXX_DiscardUnknown() {
-	xxx_messageInfo_GetDefaultGcsBucketNameResponse.DiscardUnknown(m)
-}
-
-var xxx_messageInfo_GetDefaultGcsBucketNameResponse proto.InternalMessageInfo
-
-func (m *GetDefaultGcsBucketNameResponse) GetDefaultGcsBucketName() string {
-	if m != nil && m.DefaultGcsBucketName != nil {
-		return *m.DefaultGcsBucketName
-	}
-	return ""
-}
-
-func init() {
-	proto.RegisterType((*AppIdentityServiceError)(nil), "appengine.AppIdentityServiceError")
-	proto.RegisterType((*SignForAppRequest)(nil), "appengine.SignForAppRequest")
-	proto.RegisterType((*SignForAppResponse)(nil), "appengine.SignForAppResponse")
-	proto.RegisterType((*GetPublicCertificateForAppRequest)(nil), "appengine.GetPublicCertificateForAppRequest")
-	proto.RegisterType((*PublicCertificate)(nil), "appengine.PublicCertificate")
-	proto.RegisterType((*GetPublicCertificateForAppResponse)(nil), "appengine.GetPublicCertificateForAppResponse")
-	proto.RegisterType((*GetServiceAccountNameRequest)(nil), "appengine.GetServiceAccountNameRequest")
-	proto.RegisterType((*GetServiceAccountNameResponse)(nil), "appengine.GetServiceAccountNameResponse")
-	proto.RegisterType((*GetAccessTokenRequest)(nil), "appengine.GetAccessTokenRequest")
-	proto.RegisterType((*GetAccessTokenResponse)(nil), "appengine.GetAccessTokenResponse")
-	proto.RegisterType((*GetDefaultGcsBucketNameRequest)(nil), "appengine.GetDefaultGcsBucketNameRequest")
-	proto.RegisterType((*GetDefaultGcsBucketNameResponse)(nil), "appengine.GetDefaultGcsBucketNameResponse")
-}
-
-func init() {
-	proto.RegisterFile("google.golang.org/appengine/internal/app_identity/app_identity_service.proto", fileDescriptor_app_identity_service_08a6e3f74b04cfa4)
-}
-
-var fileDescriptor_app_identity_service_08a6e3f74b04cfa4 = []byte{
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diff --git a/vendor/google.golang.org/appengine/internal/base/api_base.pb.go b/vendor/google.golang.org/appengine/internal/base/api_base.pb.go
deleted file mode 100644
index db4777e68..000000000
--- a/vendor/google.golang.org/appengine/internal/base/api_base.pb.go
+++ /dev/null
@@ -1,308 +0,0 @@
-// Code generated by protoc-gen-go. DO NOT EDIT.
-// source: google.golang.org/appengine/internal/base/api_base.proto
-
-package base
-
-import proto "github.com/golang/protobuf/proto"
-import fmt "fmt"
-import math "math"
-
-// Reference imports to suppress errors if they are not otherwise used.
-var _ = proto.Marshal
-var _ = fmt.Errorf
-var _ = math.Inf
-
-// This is a compile-time assertion to ensure that this generated file
-// is compatible with the proto package it is being compiled against.
-// A compilation error at this line likely means your copy of the
-// proto package needs to be updated.
-const _ = proto.ProtoPackageIsVersion2 // please upgrade the proto package
-
-type StringProto struct {
-	Value                *string  `protobuf:"bytes,1,req,name=value" json:"value,omitempty"`
-	XXX_NoUnkeyedLiteral struct{} `json:"-"`
-	XXX_unrecognized     []byte   `json:"-"`
-	XXX_sizecache        int32    `json:"-"`
-}
-
-func (m *StringProto) Reset()         { *m = StringProto{} }
-func (m *StringProto) String() string { return proto.CompactTextString(m) }
-func (*StringProto) ProtoMessage()    {}
-func (*StringProto) Descriptor() ([]byte, []int) {
-	return fileDescriptor_api_base_9d49f8792e0c1140, []int{0}
-}
-func (m *StringProto) XXX_Unmarshal(b []byte) error {
-	return xxx_messageInfo_StringProto.Unmarshal(m, b)
-}
-func (m *StringProto) XXX_Marshal(b []byte, deterministic bool) ([]byte, error) {
-	return xxx_messageInfo_StringProto.Marshal(b, m, deterministic)
-}
-func (dst *StringProto) XXX_Merge(src proto.Message) {
-	xxx_messageInfo_StringProto.Merge(dst, src)
-}
-func (m *StringProto) XXX_Size() int {
-	return xxx_messageInfo_StringProto.Size(m)
-}
-func (m *StringProto) XXX_DiscardUnknown() {
-	xxx_messageInfo_StringProto.DiscardUnknown(m)
-}
-
-var xxx_messageInfo_StringProto proto.InternalMessageInfo
-
-func (m *StringProto) GetValue() string {
-	if m != nil && m.Value != nil {
-		return *m.Value
-	}
-	return ""
-}
-
-type Integer32Proto struct {
-	Value                *int32   `protobuf:"varint,1,req,name=value" json:"value,omitempty"`
-	XXX_NoUnkeyedLiteral struct{} `json:"-"`
-	XXX_unrecognized     []byte   `json:"-"`
-	XXX_sizecache        int32    `json:"-"`
-}
-
-func (m *Integer32Proto) Reset()         { *m = Integer32Proto{} }
-func (m *Integer32Proto) String() string { return proto.CompactTextString(m) }
-func (*Integer32Proto) ProtoMessage()    {}
-func (*Integer32Proto) Descriptor() ([]byte, []int) {
-	return fileDescriptor_api_base_9d49f8792e0c1140, []int{1}
-}
-func (m *Integer32Proto) XXX_Unmarshal(b []byte) error {
-	return xxx_messageInfo_Integer32Proto.Unmarshal(m, b)
-}
-func (m *Integer32Proto) XXX_Marshal(b []byte, deterministic bool) ([]byte, error) {
-	return xxx_messageInfo_Integer32Proto.Marshal(b, m, deterministic)
-}
-func (dst *Integer32Proto) XXX_Merge(src proto.Message) {
-	xxx_messageInfo_Integer32Proto.Merge(dst, src)
-}
-func (m *Integer32Proto) XXX_Size() int {
-	return xxx_messageInfo_Integer32Proto.Size(m)
-}
-func (m *Integer32Proto) XXX_DiscardUnknown() {
-	xxx_messageInfo_Integer32Proto.DiscardUnknown(m)
-}
-
-var xxx_messageInfo_Integer32Proto proto.InternalMessageInfo
-
-func (m *Integer32Proto) GetValue() int32 {
-	if m != nil && m.Value != nil {
-		return *m.Value
-	}
-	return 0
-}
-
-type Integer64Proto struct {
-	Value                *int64   `protobuf:"varint,1,req,name=value" json:"value,omitempty"`
-	XXX_NoUnkeyedLiteral struct{} `json:"-"`
-	XXX_unrecognized     []byte   `json:"-"`
-	XXX_sizecache        int32    `json:"-"`
-}
-
-func (m *Integer64Proto) Reset()         { *m = Integer64Proto{} }
-func (m *Integer64Proto) String() string { return proto.CompactTextString(m) }
-func (*Integer64Proto) ProtoMessage()    {}
-func (*Integer64Proto) Descriptor() ([]byte, []int) {
-	return fileDescriptor_api_base_9d49f8792e0c1140, []int{2}
-}
-func (m *Integer64Proto) XXX_Unmarshal(b []byte) error {
-	return xxx_messageInfo_Integer64Proto.Unmarshal(m, b)
-}
-func (m *Integer64Proto) XXX_Marshal(b []byte, deterministic bool) ([]byte, error) {
-	return xxx_messageInfo_Integer64Proto.Marshal(b, m, deterministic)
-}
-func (dst *Integer64Proto) XXX_Merge(src proto.Message) {
-	xxx_messageInfo_Integer64Proto.Merge(dst, src)
-}
-func (m *Integer64Proto) XXX_Size() int {
-	return xxx_messageInfo_Integer64Proto.Size(m)
-}
-func (m *Integer64Proto) XXX_DiscardUnknown() {
-	xxx_messageInfo_Integer64Proto.DiscardUnknown(m)
-}
-
-var xxx_messageInfo_Integer64Proto proto.InternalMessageInfo
-
-func (m *Integer64Proto) GetValue() int64 {
-	if m != nil && m.Value != nil {
-		return *m.Value
-	}
-	return 0
-}
-
-type BoolProto struct {
-	Value                *bool    `protobuf:"varint,1,req,name=value" json:"value,omitempty"`
-	XXX_NoUnkeyedLiteral struct{} `json:"-"`
-	XXX_unrecognized     []byte   `json:"-"`
-	XXX_sizecache        int32    `json:"-"`
-}
-
-func (m *BoolProto) Reset()         { *m = BoolProto{} }
-func (m *BoolProto) String() string { return proto.CompactTextString(m) }
-func (*BoolProto) ProtoMessage()    {}
-func (*BoolProto) Descriptor() ([]byte, []int) {
-	return fileDescriptor_api_base_9d49f8792e0c1140, []int{3}
-}
-func (m *BoolProto) XXX_Unmarshal(b []byte) error {
-	return xxx_messageInfo_BoolProto.Unmarshal(m, b)
-}
-func (m *BoolProto) XXX_Marshal(b []byte, deterministic bool) ([]byte, error) {
-	return xxx_messageInfo_BoolProto.Marshal(b, m, deterministic)
-}
-func (dst *BoolProto) XXX_Merge(src proto.Message) {
-	xxx_messageInfo_BoolProto.Merge(dst, src)
-}
-func (m *BoolProto) XXX_Size() int {
-	return xxx_messageInfo_BoolProto.Size(m)
-}
-func (m *BoolProto) XXX_DiscardUnknown() {
-	xxx_messageInfo_BoolProto.DiscardUnknown(m)
-}
-
-var xxx_messageInfo_BoolProto proto.InternalMessageInfo
-
-func (m *BoolProto) GetValue() bool {
-	if m != nil && m.Value != nil {
-		return *m.Value
-	}
-	return false
-}
-
-type DoubleProto struct {
-	Value                *float64 `protobuf:"fixed64,1,req,name=value" json:"value,omitempty"`
-	XXX_NoUnkeyedLiteral struct{} `json:"-"`
-	XXX_unrecognized     []byte   `json:"-"`
-	XXX_sizecache        int32    `json:"-"`
-}
-
-func (m *DoubleProto) Reset()         { *m = DoubleProto{} }
-func (m *DoubleProto) String() string { return proto.CompactTextString(m) }
-func (*DoubleProto) ProtoMessage()    {}
-func (*DoubleProto) Descriptor() ([]byte, []int) {
-	return fileDescriptor_api_base_9d49f8792e0c1140, []int{4}
-}
-func (m *DoubleProto) XXX_Unmarshal(b []byte) error {
-	return xxx_messageInfo_DoubleProto.Unmarshal(m, b)
-}
-func (m *DoubleProto) XXX_Marshal(b []byte, deterministic bool) ([]byte, error) {
-	return xxx_messageInfo_DoubleProto.Marshal(b, m, deterministic)
-}
-func (dst *DoubleProto) XXX_Merge(src proto.Message) {
-	xxx_messageInfo_DoubleProto.Merge(dst, src)
-}
-func (m *DoubleProto) XXX_Size() int {
-	return xxx_messageInfo_DoubleProto.Size(m)
-}
-func (m *DoubleProto) XXX_DiscardUnknown() {
-	xxx_messageInfo_DoubleProto.DiscardUnknown(m)
-}
-
-var xxx_messageInfo_DoubleProto proto.InternalMessageInfo
-
-func (m *DoubleProto) GetValue() float64 {
-	if m != nil && m.Value != nil {
-		return *m.Value
-	}
-	return 0
-}
-
-type BytesProto struct {
-	Value                []byte   `protobuf:"bytes,1,req,name=value" json:"value,omitempty"`
-	XXX_NoUnkeyedLiteral struct{} `json:"-"`
-	XXX_unrecognized     []byte   `json:"-"`
-	XXX_sizecache        int32    `json:"-"`
-}
-
-func (m *BytesProto) Reset()         { *m = BytesProto{} }
-func (m *BytesProto) String() string { return proto.CompactTextString(m) }
-func (*BytesProto) ProtoMessage()    {}
-func (*BytesProto) Descriptor() ([]byte, []int) {
-	return fileDescriptor_api_base_9d49f8792e0c1140, []int{5}
-}
-func (m *BytesProto) XXX_Unmarshal(b []byte) error {
-	return xxx_messageInfo_BytesProto.Unmarshal(m, b)
-}
-func (m *BytesProto) XXX_Marshal(b []byte, deterministic bool) ([]byte, error) {
-	return xxx_messageInfo_BytesProto.Marshal(b, m, deterministic)
-}
-func (dst *BytesProto) XXX_Merge(src proto.Message) {
-	xxx_messageInfo_BytesProto.Merge(dst, src)
-}
-func (m *BytesProto) XXX_Size() int {
-	return xxx_messageInfo_BytesProto.Size(m)
-}
-func (m *BytesProto) XXX_DiscardUnknown() {
-	xxx_messageInfo_BytesProto.DiscardUnknown(m)
-}
-
-var xxx_messageInfo_BytesProto proto.InternalMessageInfo
-
-func (m *BytesProto) GetValue() []byte {
-	if m != nil {
-		return m.Value
-	}
-	return nil
-}
-
-type VoidProto struct {
-	XXX_NoUnkeyedLiteral struct{} `json:"-"`
-	XXX_unrecognized     []byte   `json:"-"`
-	XXX_sizecache        int32    `json:"-"`
-}
-
-func (m *VoidProto) Reset()         { *m = VoidProto{} }
-func (m *VoidProto) String() string { return proto.CompactTextString(m) }
-func (*VoidProto) ProtoMessage()    {}
-func (*VoidProto) Descriptor() ([]byte, []int) {
-	return fileDescriptor_api_base_9d49f8792e0c1140, []int{6}
-}
-func (m *VoidProto) XXX_Unmarshal(b []byte) error {
-	return xxx_messageInfo_VoidProto.Unmarshal(m, b)
-}
-func (m *VoidProto) XXX_Marshal(b []byte, deterministic bool) ([]byte, error) {
-	return xxx_messageInfo_VoidProto.Marshal(b, m, deterministic)
-}
-func (dst *VoidProto) XXX_Merge(src proto.Message) {
-	xxx_messageInfo_VoidProto.Merge(dst, src)
-}
-func (m *VoidProto) XXX_Size() int {
-	return xxx_messageInfo_VoidProto.Size(m)
-}
-func (m *VoidProto) XXX_DiscardUnknown() {
-	xxx_messageInfo_VoidProto.DiscardUnknown(m)
-}
-
-var xxx_messageInfo_VoidProto proto.InternalMessageInfo
-
-func init() {
-	proto.RegisterType((*StringProto)(nil), "appengine.base.StringProto")
-	proto.RegisterType((*Integer32Proto)(nil), "appengine.base.Integer32Proto")
-	proto.RegisterType((*Integer64Proto)(nil), "appengine.base.Integer64Proto")
-	proto.RegisterType((*BoolProto)(nil), "appengine.base.BoolProto")
-	proto.RegisterType((*DoubleProto)(nil), "appengine.base.DoubleProto")
-	proto.RegisterType((*BytesProto)(nil), "appengine.base.BytesProto")
-	proto.RegisterType((*VoidProto)(nil), "appengine.base.VoidProto")
-}
-
-func init() {
-	proto.RegisterFile("google.golang.org/appengine/internal/base/api_base.proto", fileDescriptor_api_base_9d49f8792e0c1140)
-}
-
-var fileDescriptor_api_base_9d49f8792e0c1140 = []byte{
-	// 199 bytes of a gzipped FileDescriptorProto
-	0x1f, 0x8b, 0x08, 0x00, 0x00, 0x00, 0x00, 0x00, 0x02, 0xff, 0x6c, 0xcf, 0x3f, 0x4b, 0xc6, 0x30,
-	0x10, 0x06, 0x70, 0x5a, 0xad, 0xb4, 0x57, 0xe9, 0x20, 0x0e, 0x1d, 0xb5, 0x05, 0x71, 0x4a, 0x40,
-	0x45, 0x9c, 0x83, 0x8b, 0x9b, 0x28, 0x38, 0xb8, 0x48, 0x8a, 0xc7, 0x11, 0x08, 0xb9, 0x90, 0xa6,
-	0x82, 0xdf, 0x5e, 0xda, 0xd2, 0xfa, 0xc2, 0x9b, 0xed, 0xfe, 0xfc, 0xe0, 0xe1, 0x81, 0x27, 0x62,
-	0x26, 0x8b, 0x82, 0xd8, 0x6a, 0x47, 0x82, 0x03, 0x49, 0xed, 0x3d, 0x3a, 0x32, 0x0e, 0xa5, 0x71,
-	0x11, 0x83, 0xd3, 0x56, 0x0e, 0x7a, 0x44, 0xa9, 0xbd, 0xf9, 0x9a, 0x07, 0xe1, 0x03, 0x47, 0xbe,
-	0x68, 0x76, 0x27, 0xe6, 0x6b, 0xd7, 0x43, 0xfd, 0x1e, 0x83, 0x71, 0xf4, 0xba, 0xbc, 0x2f, 0xa1,
-	0xf8, 0xd1, 0x76, 0xc2, 0x36, 0xbb, 0xca, 0x6f, 0xab, 0xb7, 0x75, 0xe9, 0x6e, 0xa0, 0x79, 0x71,
-	0x11, 0x09, 0xc3, 0xfd, 0x5d, 0xc2, 0x15, 0xc7, 0xee, 0xf1, 0x21, 0xe1, 0x4e, 0x36, 0x77, 0x0d,
-	0x95, 0x62, 0xb6, 0x09, 0x52, 0x6e, 0xa4, 0x87, 0xfa, 0x99, 0xa7, 0xc1, 0x62, 0x02, 0x65, 0xff,
-	0x79, 0xa0, 0x7e, 0x23, 0x8e, 0xab, 0x69, 0x0f, 0xcd, 0xb9, 0xca, 0xcb, 0xdd, 0xd5, 0x50, 0x7d,
-	0xb0, 0xf9, 0x5e, 0x98, 0x3a, 0xfb, 0x3c, 0x9d, 0x9b, 0xff, 0x05, 0x00, 0x00, 0xff, 0xff, 0xba,
-	0x37, 0x25, 0xea, 0x44, 0x01, 0x00, 0x00,
-}
diff --git a/vendor/google.golang.org/appengine/internal/datastore/datastore_v3.pb.go b/vendor/google.golang.org/appengine/internal/datastore/datastore_v3.pb.go
deleted file mode 100644
index 2fb748289..000000000
--- a/vendor/google.golang.org/appengine/internal/datastore/datastore_v3.pb.go
+++ /dev/null
@@ -1,4367 +0,0 @@
-// Code generated by protoc-gen-go. DO NOT EDIT.
-// source: google.golang.org/appengine/internal/datastore/datastore_v3.proto
-
-package datastore
-
-import proto "github.com/golang/protobuf/proto"
-import fmt "fmt"
-import math "math"
-
-// Reference imports to suppress errors if they are not otherwise used.
-var _ = proto.Marshal
-var _ = fmt.Errorf
-var _ = math.Inf
-
-// This is a compile-time assertion to ensure that this generated file
-// is compatible with the proto package it is being compiled against.
-// A compilation error at this line likely means your copy of the
-// proto package needs to be updated.
-const _ = proto.ProtoPackageIsVersion2 // please upgrade the proto package
-
-type Property_Meaning int32
-
-const (
-	Property_NO_MEANING       Property_Meaning = 0
-	Property_BLOB             Property_Meaning = 14
-	Property_TEXT             Property_Meaning = 15
-	Property_BYTESTRING       Property_Meaning = 16
-	Property_ATOM_CATEGORY    Property_Meaning = 1
-	Property_ATOM_LINK        Property_Meaning = 2
-	Property_ATOM_TITLE       Property_Meaning = 3
-	Property_ATOM_CONTENT     Property_Meaning = 4
-	Property_ATOM_SUMMARY     Property_Meaning = 5
-	Property_ATOM_AUTHOR      Property_Meaning = 6
-	Property_GD_WHEN          Property_Meaning = 7
-	Property_GD_EMAIL         Property_Meaning = 8
-	Property_GEORSS_POINT     Property_Meaning = 9
-	Property_GD_IM            Property_Meaning = 10
-	Property_GD_PHONENUMBER   Property_Meaning = 11
-	Property_GD_POSTALADDRESS Property_Meaning = 12
-	Property_GD_RATING        Property_Meaning = 13
-	Property_BLOBKEY          Property_Meaning = 17
-	Property_ENTITY_PROTO     Property_Meaning = 19
-	Property_INDEX_VALUE      Property_Meaning = 18
-)
-
-var Property_Meaning_name = map[int32]string{
-	0:  "NO_MEANING",
-	14: "BLOB",
-	15: "TEXT",
-	16: "BYTESTRING",
-	1:  "ATOM_CATEGORY",
-	2:  "ATOM_LINK",
-	3:  "ATOM_TITLE",
-	4:  "ATOM_CONTENT",
-	5:  "ATOM_SUMMARY",
-	6:  "ATOM_AUTHOR",
-	7:  "GD_WHEN",
-	8:  "GD_EMAIL",
-	9:  "GEORSS_POINT",
-	10: "GD_IM",
-	11: "GD_PHONENUMBER",
-	12: "GD_POSTALADDRESS",
-	13: "GD_RATING",
-	17: "BLOBKEY",
-	19: "ENTITY_PROTO",
-	18: "INDEX_VALUE",
-}
-var Property_Meaning_value = map[string]int32{
-	"NO_MEANING":       0,
-	"BLOB":             14,
-	"TEXT":             15,
-	"BYTESTRING":       16,
-	"ATOM_CATEGORY":    1,
-	"ATOM_LINK":        2,
-	"ATOM_TITLE":       3,
-	"ATOM_CONTENT":     4,
-	"ATOM_SUMMARY":     5,
-	"ATOM_AUTHOR":      6,
-	"GD_WHEN":          7,
-	"GD_EMAIL":         8,
-	"GEORSS_POINT":     9,
-	"GD_IM":            10,
-	"GD_PHONENUMBER":   11,
-	"GD_POSTALADDRESS": 12,
-	"GD_RATING":        13,
-	"BLOBKEY":          17,
-	"ENTITY_PROTO":     19,
-	"INDEX_VALUE":      18,
-}
-
-func (x Property_Meaning) Enum() *Property_Meaning {
-	p := new(Property_Meaning)
-	*p = x
-	return p
-}
-func (x Property_Meaning) String() string {
-	return proto.EnumName(Property_Meaning_name, int32(x))
-}
-func (x *Property_Meaning) UnmarshalJSON(data []byte) error {
-	value, err := proto.UnmarshalJSONEnum(Property_Meaning_value, data, "Property_Meaning")
-	if err != nil {
-		return err
-	}
-	*x = Property_Meaning(value)
-	return nil
-}
-func (Property_Meaning) EnumDescriptor() ([]byte, []int) {
-	return fileDescriptor_datastore_v3_83b17b80c34f6179, []int{2, 0}
-}
-
-type Property_FtsTokenizationOption int32
-
-const (
-	Property_HTML Property_FtsTokenizationOption = 1
-	Property_ATOM Property_FtsTokenizationOption = 2
-)
-
-var Property_FtsTokenizationOption_name = map[int32]string{
-	1: "HTML",
-	2: "ATOM",
-}
-var Property_FtsTokenizationOption_value = map[string]int32{
-	"HTML": 1,
-	"ATOM": 2,
-}
-
-func (x Property_FtsTokenizationOption) Enum() *Property_FtsTokenizationOption {
-	p := new(Property_FtsTokenizationOption)
-	*p = x
-	return p
-}
-func (x Property_FtsTokenizationOption) String() string {
-	return proto.EnumName(Property_FtsTokenizationOption_name, int32(x))
-}
-func (x *Property_FtsTokenizationOption) UnmarshalJSON(data []byte) error {
-	value, err := proto.UnmarshalJSONEnum(Property_FtsTokenizationOption_value, data, "Property_FtsTokenizationOption")
-	if err != nil {
-		return err
-	}
-	*x = Property_FtsTokenizationOption(value)
-	return nil
-}
-func (Property_FtsTokenizationOption) EnumDescriptor() ([]byte, []int) {
-	return fileDescriptor_datastore_v3_83b17b80c34f6179, []int{2, 1}
-}
-
-type EntityProto_Kind int32
-
-const (
-	EntityProto_GD_CONTACT EntityProto_Kind = 1
-	EntityProto_GD_EVENT   EntityProto_Kind = 2
-	EntityProto_GD_MESSAGE EntityProto_Kind = 3
-)
-
-var EntityProto_Kind_name = map[int32]string{
-	1: "GD_CONTACT",
-	2: "GD_EVENT",
-	3: "GD_MESSAGE",
-}
-var EntityProto_Kind_value = map[string]int32{
-	"GD_CONTACT": 1,
-	"GD_EVENT":   2,
-	"GD_MESSAGE": 3,
-}
-
-func (x EntityProto_Kind) Enum() *EntityProto_Kind {
-	p := new(EntityProto_Kind)
-	*p = x
-	return p
-}
-func (x EntityProto_Kind) String() string {
-	return proto.EnumName(EntityProto_Kind_name, int32(x))
-}
-func (x *EntityProto_Kind) UnmarshalJSON(data []byte) error {
-	value, err := proto.UnmarshalJSONEnum(EntityProto_Kind_value, data, "EntityProto_Kind")
-	if err != nil {
-		return err
-	}
-	*x = EntityProto_Kind(value)
-	return nil
-}
-func (EntityProto_Kind) EnumDescriptor() ([]byte, []int) {
-	return fileDescriptor_datastore_v3_83b17b80c34f6179, []int{6, 0}
-}
-
-type Index_Property_Direction int32
-
-const (
-	Index_Property_ASCENDING  Index_Property_Direction = 1
-	Index_Property_DESCENDING Index_Property_Direction = 2
-)
-
-var Index_Property_Direction_name = map[int32]string{
-	1: "ASCENDING",
-	2: "DESCENDING",
-}
-var Index_Property_Direction_value = map[string]int32{
-	"ASCENDING":  1,
-	"DESCENDING": 2,
-}
-
-func (x Index_Property_Direction) Enum() *Index_Property_Direction {
-	p := new(Index_Property_Direction)
-	*p = x
-	return p
-}
-func (x Index_Property_Direction) String() string {
-	return proto.EnumName(Index_Property_Direction_name, int32(x))
-}
-func (x *Index_Property_Direction) UnmarshalJSON(data []byte) error {
-	value, err := proto.UnmarshalJSONEnum(Index_Property_Direction_value, data, "Index_Property_Direction")
-	if err != nil {
-		return err
-	}
-	*x = Index_Property_Direction(value)
-	return nil
-}
-func (Index_Property_Direction) EnumDescriptor() ([]byte, []int) {
-	return fileDescriptor_datastore_v3_83b17b80c34f6179, []int{8, 0, 0}
-}
-
-type CompositeIndex_State int32
-
-const (
-	CompositeIndex_WRITE_ONLY CompositeIndex_State = 1
-	CompositeIndex_READ_WRITE CompositeIndex_State = 2
-	CompositeIndex_DELETED    CompositeIndex_State = 3
-	CompositeIndex_ERROR      CompositeIndex_State = 4
-)
-
-var CompositeIndex_State_name = map[int32]string{
-	1: "WRITE_ONLY",
-	2: "READ_WRITE",
-	3: "DELETED",
-	4: "ERROR",
-}
-var CompositeIndex_State_value = map[string]int32{
-	"WRITE_ONLY": 1,
-	"READ_WRITE": 2,
-	"DELETED":    3,
-	"ERROR":      4,
-}
-
-func (x CompositeIndex_State) Enum() *CompositeIndex_State {
-	p := new(CompositeIndex_State)
-	*p = x
-	return p
-}
-func (x CompositeIndex_State) String() string {
-	return proto.EnumName(CompositeIndex_State_name, int32(x))
-}
-func (x *CompositeIndex_State) UnmarshalJSON(data []byte) error {
-	value, err := proto.UnmarshalJSONEnum(CompositeIndex_State_value, data, "CompositeIndex_State")
-	if err != nil {
-		return err
-	}
-	*x = CompositeIndex_State(value)
-	return nil
-}
-func (CompositeIndex_State) EnumDescriptor() ([]byte, []int) {
-	return fileDescriptor_datastore_v3_83b17b80c34f6179, []int{9, 0}
-}
-
-type Snapshot_Status int32
-
-const (
-	Snapshot_INACTIVE Snapshot_Status = 0
-	Snapshot_ACTIVE   Snapshot_Status = 1
-)
-
-var Snapshot_Status_name = map[int32]string{
-	0: "INACTIVE",
-	1: "ACTIVE",
-}
-var Snapshot_Status_value = map[string]int32{
-	"INACTIVE": 0,
-	"ACTIVE":   1,
-}
-
-func (x Snapshot_Status) Enum() *Snapshot_Status {
-	p := new(Snapshot_Status)
-	*p = x
-	return p
-}
-func (x Snapshot_Status) String() string {
-	return proto.EnumName(Snapshot_Status_name, int32(x))
-}
-func (x *Snapshot_Status) UnmarshalJSON(data []byte) error {
-	value, err := proto.UnmarshalJSONEnum(Snapshot_Status_value, data, "Snapshot_Status")
-	if err != nil {
-		return err
-	}
-	*x = Snapshot_Status(value)
-	return nil
-}
-func (Snapshot_Status) EnumDescriptor() ([]byte, []int) {
-	return fileDescriptor_datastore_v3_83b17b80c34f6179, []int{12, 0}
-}
-
-type Query_Hint int32
-
-const (
-	Query_ORDER_FIRST    Query_Hint = 1
-	Query_ANCESTOR_FIRST Query_Hint = 2
-	Query_FILTER_FIRST   Query_Hint = 3
-)
-
-var Query_Hint_name = map[int32]string{
-	1: "ORDER_FIRST",
-	2: "ANCESTOR_FIRST",
-	3: "FILTER_FIRST",
-}
-var Query_Hint_value = map[string]int32{
-	"ORDER_FIRST":    1,
-	"ANCESTOR_FIRST": 2,
-	"FILTER_FIRST":   3,
-}
-
-func (x Query_Hint) Enum() *Query_Hint {
-	p := new(Query_Hint)
-	*p = x
-	return p
-}
-func (x Query_Hint) String() string {
-	return proto.EnumName(Query_Hint_name, int32(x))
-}
-func (x *Query_Hint) UnmarshalJSON(data []byte) error {
-	value, err := proto.UnmarshalJSONEnum(Query_Hint_value, data, "Query_Hint")
-	if err != nil {
-		return err
-	}
-	*x = Query_Hint(value)
-	return nil
-}
-func (Query_Hint) EnumDescriptor() ([]byte, []int) {
-	return fileDescriptor_datastore_v3_83b17b80c34f6179, []int{15, 0}
-}
-
-type Query_Filter_Operator int32
-
-const (
-	Query_Filter_LESS_THAN             Query_Filter_Operator = 1
-	Query_Filter_LESS_THAN_OR_EQUAL    Query_Filter_Operator = 2
-	Query_Filter_GREATER_THAN          Query_Filter_Operator = 3
-	Query_Filter_GREATER_THAN_OR_EQUAL Query_Filter_Operator = 4
-	Query_Filter_EQUAL                 Query_Filter_Operator = 5
-	Query_Filter_IN                    Query_Filter_Operator = 6
-	Query_Filter_EXISTS                Query_Filter_Operator = 7
-)
-
-var Query_Filter_Operator_name = map[int32]string{
-	1: "LESS_THAN",
-	2: "LESS_THAN_OR_EQUAL",
-	3: "GREATER_THAN",
-	4: "GREATER_THAN_OR_EQUAL",
-	5: "EQUAL",
-	6: "IN",
-	7: "EXISTS",
-}
-var Query_Filter_Operator_value = map[string]int32{
-	"LESS_THAN":             1,
-	"LESS_THAN_OR_EQUAL":    2,
-	"GREATER_THAN":          3,
-	"GREATER_THAN_OR_EQUAL": 4,
-	"EQUAL":                 5,
-	"IN":                    6,
-	"EXISTS":                7,
-}
-
-func (x Query_Filter_Operator) Enum() *Query_Filter_Operator {
-	p := new(Query_Filter_Operator)
-	*p = x
-	return p
-}
-func (x Query_Filter_Operator) String() string {
-	return proto.EnumName(Query_Filter_Operator_name, int32(x))
-}
-func (x *Query_Filter_Operator) UnmarshalJSON(data []byte) error {
-	value, err := proto.UnmarshalJSONEnum(Query_Filter_Operator_value, data, "Query_Filter_Operator")
-	if err != nil {
-		return err
-	}
-	*x = Query_Filter_Operator(value)
-	return nil
-}
-func (Query_Filter_Operator) EnumDescriptor() ([]byte, []int) {
-	return fileDescriptor_datastore_v3_83b17b80c34f6179, []int{15, 0, 0}
-}
-
-type Query_Order_Direction int32
-
-const (
-	Query_Order_ASCENDING  Query_Order_Direction = 1
-	Query_Order_DESCENDING Query_Order_Direction = 2
-)
-
-var Query_Order_Direction_name = map[int32]string{
-	1: "ASCENDING",
-	2: "DESCENDING",
-}
-var Query_Order_Direction_value = map[string]int32{
-	"ASCENDING":  1,
-	"DESCENDING": 2,
-}
-
-func (x Query_Order_Direction) Enum() *Query_Order_Direction {
-	p := new(Query_Order_Direction)
-	*p = x
-	return p
-}
-func (x Query_Order_Direction) String() string {
-	return proto.EnumName(Query_Order_Direction_name, int32(x))
-}
-func (x *Query_Order_Direction) UnmarshalJSON(data []byte) error {
-	value, err := proto.UnmarshalJSONEnum(Query_Order_Direction_value, data, "Query_Order_Direction")
-	if err != nil {
-		return err
-	}
-	*x = Query_Order_Direction(value)
-	return nil
-}
-func (Query_Order_Direction) EnumDescriptor() ([]byte, []int) {
-	return fileDescriptor_datastore_v3_83b17b80c34f6179, []int{15, 1, 0}
-}
-
-type Error_ErrorCode int32
-
-const (
-	Error_BAD_REQUEST                  Error_ErrorCode = 1
-	Error_CONCURRENT_TRANSACTION       Error_ErrorCode = 2
-	Error_INTERNAL_ERROR               Error_ErrorCode = 3
-	Error_NEED_INDEX                   Error_ErrorCode = 4
-	Error_TIMEOUT                      Error_ErrorCode = 5
-	Error_PERMISSION_DENIED            Error_ErrorCode = 6
-	Error_BIGTABLE_ERROR               Error_ErrorCode = 7
-	Error_COMMITTED_BUT_STILL_APPLYING Error_ErrorCode = 8
-	Error_CAPABILITY_DISABLED          Error_ErrorCode = 9
-	Error_TRY_ALTERNATE_BACKEND        Error_ErrorCode = 10
-	Error_SAFE_TIME_TOO_OLD            Error_ErrorCode = 11
-)
-
-var Error_ErrorCode_name = map[int32]string{
-	1:  "BAD_REQUEST",
-	2:  "CONCURRENT_TRANSACTION",
-	3:  "INTERNAL_ERROR",
-	4:  "NEED_INDEX",
-	5:  "TIMEOUT",
-	6:  "PERMISSION_DENIED",
-	7:  "BIGTABLE_ERROR",
-	8:  "COMMITTED_BUT_STILL_APPLYING",
-	9:  "CAPABILITY_DISABLED",
-	10: "TRY_ALTERNATE_BACKEND",
-	11: "SAFE_TIME_TOO_OLD",
-}
-var Error_ErrorCode_value = map[string]int32{
-	"BAD_REQUEST":                  1,
-	"CONCURRENT_TRANSACTION":       2,
-	"INTERNAL_ERROR":               3,
-	"NEED_INDEX":                   4,
-	"TIMEOUT":                      5,
-	"PERMISSION_DENIED":            6,
-	"BIGTABLE_ERROR":               7,
-	"COMMITTED_BUT_STILL_APPLYING": 8,
-	"CAPABILITY_DISABLED":          9,
-	"TRY_ALTERNATE_BACKEND":        10,
-	"SAFE_TIME_TOO_OLD":            11,
-}
-
-func (x Error_ErrorCode) Enum() *Error_ErrorCode {
-	p := new(Error_ErrorCode)
-	*p = x
-	return p
-}
-func (x Error_ErrorCode) String() string {
-	return proto.EnumName(Error_ErrorCode_name, int32(x))
-}
-func (x *Error_ErrorCode) UnmarshalJSON(data []byte) error {
-	value, err := proto.UnmarshalJSONEnum(Error_ErrorCode_value, data, "Error_ErrorCode")
-	if err != nil {
-		return err
-	}
-	*x = Error_ErrorCode(value)
-	return nil
-}
-func (Error_ErrorCode) EnumDescriptor() ([]byte, []int) {
-	return fileDescriptor_datastore_v3_83b17b80c34f6179, []int{19, 0}
-}
-
-type PutRequest_AutoIdPolicy int32
-
-const (
-	PutRequest_CURRENT    PutRequest_AutoIdPolicy = 0
-	PutRequest_SEQUENTIAL PutRequest_AutoIdPolicy = 1
-)
-
-var PutRequest_AutoIdPolicy_name = map[int32]string{
-	0: "CURRENT",
-	1: "SEQUENTIAL",
-}
-var PutRequest_AutoIdPolicy_value = map[string]int32{
-	"CURRENT":    0,
-	"SEQUENTIAL": 1,
-}
-
-func (x PutRequest_AutoIdPolicy) Enum() *PutRequest_AutoIdPolicy {
-	p := new(PutRequest_AutoIdPolicy)
-	*p = x
-	return p
-}
-func (x PutRequest_AutoIdPolicy) String() string {
-	return proto.EnumName(PutRequest_AutoIdPolicy_name, int32(x))
-}
-func (x *PutRequest_AutoIdPolicy) UnmarshalJSON(data []byte) error {
-	value, err := proto.UnmarshalJSONEnum(PutRequest_AutoIdPolicy_value, data, "PutRequest_AutoIdPolicy")
-	if err != nil {
-		return err
-	}
-	*x = PutRequest_AutoIdPolicy(value)
-	return nil
-}
-func (PutRequest_AutoIdPolicy) EnumDescriptor() ([]byte, []int) {
-	return fileDescriptor_datastore_v3_83b17b80c34f6179, []int{23, 0}
-}
-
-type BeginTransactionRequest_TransactionMode int32
-
-const (
-	BeginTransactionRequest_UNKNOWN    BeginTransactionRequest_TransactionMode = 0
-	BeginTransactionRequest_READ_ONLY  BeginTransactionRequest_TransactionMode = 1
-	BeginTransactionRequest_READ_WRITE BeginTransactionRequest_TransactionMode = 2
-)
-
-var BeginTransactionRequest_TransactionMode_name = map[int32]string{
-	0: "UNKNOWN",
-	1: "READ_ONLY",
-	2: "READ_WRITE",
-}
-var BeginTransactionRequest_TransactionMode_value = map[string]int32{
-	"UNKNOWN":    0,
-	"READ_ONLY":  1,
-	"READ_WRITE": 2,
-}
-
-func (x BeginTransactionRequest_TransactionMode) Enum() *BeginTransactionRequest_TransactionMode {
-	p := new(BeginTransactionRequest_TransactionMode)
-	*p = x
-	return p
-}
-func (x BeginTransactionRequest_TransactionMode) String() string {
-	return proto.EnumName(BeginTransactionRequest_TransactionMode_name, int32(x))
-}
-func (x *BeginTransactionRequest_TransactionMode) UnmarshalJSON(data []byte) error {
-	value, err := proto.UnmarshalJSONEnum(BeginTransactionRequest_TransactionMode_value, data, "BeginTransactionRequest_TransactionMode")
-	if err != nil {
-		return err
-	}
-	*x = BeginTransactionRequest_TransactionMode(value)
-	return nil
-}
-func (BeginTransactionRequest_TransactionMode) EnumDescriptor() ([]byte, []int) {
-	return fileDescriptor_datastore_v3_83b17b80c34f6179, []int{36, 0}
-}
-
-type Action struct {
-	XXX_NoUnkeyedLiteral struct{} `json:"-"`
-	XXX_unrecognized     []byte   `json:"-"`
-	XXX_sizecache        int32    `json:"-"`
-}
-
-func (m *Action) Reset()         { *m = Action{} }
-func (m *Action) String() string { return proto.CompactTextString(m) }
-func (*Action) ProtoMessage()    {}
-func (*Action) Descriptor() ([]byte, []int) {
-	return fileDescriptor_datastore_v3_83b17b80c34f6179, []int{0}
-}
-func (m *Action) XXX_Unmarshal(b []byte) error {
-	return xxx_messageInfo_Action.Unmarshal(m, b)
-}
-func (m *Action) XXX_Marshal(b []byte, deterministic bool) ([]byte, error) {
-	return xxx_messageInfo_Action.Marshal(b, m, deterministic)
-}
-func (dst *Action) XXX_Merge(src proto.Message) {
-	xxx_messageInfo_Action.Merge(dst, src)
-}
-func (m *Action) XXX_Size() int {
-	return xxx_messageInfo_Action.Size(m)
-}
-func (m *Action) XXX_DiscardUnknown() {
-	xxx_messageInfo_Action.DiscardUnknown(m)
-}
-
-var xxx_messageInfo_Action proto.InternalMessageInfo
-
-type PropertyValue struct {
-	Int64Value           *int64                        `protobuf:"varint,1,opt,name=int64Value" json:"int64Value,omitempty"`
-	BooleanValue         *bool                         `protobuf:"varint,2,opt,name=booleanValue" json:"booleanValue,omitempty"`
-	StringValue          *string                       `protobuf:"bytes,3,opt,name=stringValue" json:"stringValue,omitempty"`
-	DoubleValue          *float64                      `protobuf:"fixed64,4,opt,name=doubleValue" json:"doubleValue,omitempty"`
-	Pointvalue           *PropertyValue_PointValue     `protobuf:"group,5,opt,name=PointValue,json=pointvalue" json:"pointvalue,omitempty"`
-	Uservalue            *PropertyValue_UserValue      `protobuf:"group,8,opt,name=UserValue,json=uservalue" json:"uservalue,omitempty"`
-	Referencevalue       *PropertyValue_ReferenceValue `protobuf:"group,12,opt,name=ReferenceValue,json=referencevalue" json:"referencevalue,omitempty"`
-	XXX_NoUnkeyedLiteral struct{}                      `json:"-"`
-	XXX_unrecognized     []byte                        `json:"-"`
-	XXX_sizecache        int32                         `json:"-"`
-}
-
-func (m *PropertyValue) Reset()         { *m = PropertyValue{} }
-func (m *PropertyValue) String() string { return proto.CompactTextString(m) }
-func (*PropertyValue) ProtoMessage()    {}
-func (*PropertyValue) Descriptor() ([]byte, []int) {
-	return fileDescriptor_datastore_v3_83b17b80c34f6179, []int{1}
-}
-func (m *PropertyValue) XXX_Unmarshal(b []byte) error {
-	return xxx_messageInfo_PropertyValue.Unmarshal(m, b)
-}
-func (m *PropertyValue) XXX_Marshal(b []byte, deterministic bool) ([]byte, error) {
-	return xxx_messageInfo_PropertyValue.Marshal(b, m, deterministic)
-}
-func (dst *PropertyValue) XXX_Merge(src proto.Message) {
-	xxx_messageInfo_PropertyValue.Merge(dst, src)
-}
-func (m *PropertyValue) XXX_Size() int {
-	return xxx_messageInfo_PropertyValue.Size(m)
-}
-func (m *PropertyValue) XXX_DiscardUnknown() {
-	xxx_messageInfo_PropertyValue.DiscardUnknown(m)
-}
-
-var xxx_messageInfo_PropertyValue proto.InternalMessageInfo
-
-func (m *PropertyValue) GetInt64Value() int64 {
-	if m != nil && m.Int64Value != nil {
-		return *m.Int64Value
-	}
-	return 0
-}
-
-func (m *PropertyValue) GetBooleanValue() bool {
-	if m != nil && m.BooleanValue != nil {
-		return *m.BooleanValue
-	}
-	return false
-}
-
-func (m *PropertyValue) GetStringValue() string {
-	if m != nil && m.StringValue != nil {
-		return *m.StringValue
-	}
-	return ""
-}
-
-func (m *PropertyValue) GetDoubleValue() float64 {
-	if m != nil && m.DoubleValue != nil {
-		return *m.DoubleValue
-	}
-	return 0
-}
-
-func (m *PropertyValue) GetPointvalue() *PropertyValue_PointValue {
-	if m != nil {
-		return m.Pointvalue
-	}
-	return nil
-}
-
-func (m *PropertyValue) GetUservalue() *PropertyValue_UserValue {
-	if m != nil {
-		return m.Uservalue
-	}
-	return nil
-}
-
-func (m *PropertyValue) GetReferencevalue() *PropertyValue_ReferenceValue {
-	if m != nil {
-		return m.Referencevalue
-	}
-	return nil
-}
-
-type PropertyValue_PointValue struct {
-	X                    *float64 `protobuf:"fixed64,6,req,name=x" json:"x,omitempty"`
-	Y                    *float64 `protobuf:"fixed64,7,req,name=y" json:"y,omitempty"`
-	XXX_NoUnkeyedLiteral struct{} `json:"-"`
-	XXX_unrecognized     []byte   `json:"-"`
-	XXX_sizecache        int32    `json:"-"`
-}
-
-func (m *PropertyValue_PointValue) Reset()         { *m = PropertyValue_PointValue{} }
-func (m *PropertyValue_PointValue) String() string { return proto.CompactTextString(m) }
-func (*PropertyValue_PointValue) ProtoMessage()    {}
-func (*PropertyValue_PointValue) Descriptor() ([]byte, []int) {
-	return fileDescriptor_datastore_v3_83b17b80c34f6179, []int{1, 0}
-}
-func (m *PropertyValue_PointValue) XXX_Unmarshal(b []byte) error {
-	return xxx_messageInfo_PropertyValue_PointValue.Unmarshal(m, b)
-}
-func (m *PropertyValue_PointValue) XXX_Marshal(b []byte, deterministic bool) ([]byte, error) {
-	return xxx_messageInfo_PropertyValue_PointValue.Marshal(b, m, deterministic)
-}
-func (dst *PropertyValue_PointValue) XXX_Merge(src proto.Message) {
-	xxx_messageInfo_PropertyValue_PointValue.Merge(dst, src)
-}
-func (m *PropertyValue_PointValue) XXX_Size() int {
-	return xxx_messageInfo_PropertyValue_PointValue.Size(m)
-}
-func (m *PropertyValue_PointValue) XXX_DiscardUnknown() {
-	xxx_messageInfo_PropertyValue_PointValue.DiscardUnknown(m)
-}
-
-var xxx_messageInfo_PropertyValue_PointValue proto.InternalMessageInfo
-
-func (m *PropertyValue_PointValue) GetX() float64 {
-	if m != nil && m.X != nil {
-		return *m.X
-	}
-	return 0
-}
-
-func (m *PropertyValue_PointValue) GetY() float64 {
-	if m != nil && m.Y != nil {
-		return *m.Y
-	}
-	return 0
-}
-
-type PropertyValue_UserValue struct {
-	Email                *string  `protobuf:"bytes,9,req,name=email" json:"email,omitempty"`
-	AuthDomain           *string  `protobuf:"bytes,10,req,name=auth_domain,json=authDomain" json:"auth_domain,omitempty"`
-	Nickname             *string  `protobuf:"bytes,11,opt,name=nickname" json:"nickname,omitempty"`
-	FederatedIdentity    *string  `protobuf:"bytes,21,opt,name=federated_identity,json=federatedIdentity" json:"federated_identity,omitempty"`
-	FederatedProvider    *string  `protobuf:"bytes,22,opt,name=federated_provider,json=federatedProvider" json:"federated_provider,omitempty"`
-	XXX_NoUnkeyedLiteral struct{} `json:"-"`
-	XXX_unrecognized     []byte   `json:"-"`
-	XXX_sizecache        int32    `json:"-"`
-}
-
-func (m *PropertyValue_UserValue) Reset()         { *m = PropertyValue_UserValue{} }
-func (m *PropertyValue_UserValue) String() string { return proto.CompactTextString(m) }
-func (*PropertyValue_UserValue) ProtoMessage()    {}
-func (*PropertyValue_UserValue) Descriptor() ([]byte, []int) {
-	return fileDescriptor_datastore_v3_83b17b80c34f6179, []int{1, 1}
-}
-func (m *PropertyValue_UserValue) XXX_Unmarshal(b []byte) error {
-	return xxx_messageInfo_PropertyValue_UserValue.Unmarshal(m, b)
-}
-func (m *PropertyValue_UserValue) XXX_Marshal(b []byte, deterministic bool) ([]byte, error) {
-	return xxx_messageInfo_PropertyValue_UserValue.Marshal(b, m, deterministic)
-}
-func (dst *PropertyValue_UserValue) XXX_Merge(src proto.Message) {
-	xxx_messageInfo_PropertyValue_UserValue.Merge(dst, src)
-}
-func (m *PropertyValue_UserValue) XXX_Size() int {
-	return xxx_messageInfo_PropertyValue_UserValue.Size(m)
-}
-func (m *PropertyValue_UserValue) XXX_DiscardUnknown() {
-	xxx_messageInfo_PropertyValue_UserValue.DiscardUnknown(m)
-}
-
-var xxx_messageInfo_PropertyValue_UserValue proto.InternalMessageInfo
-
-func (m *PropertyValue_UserValue) GetEmail() string {
-	if m != nil && m.Email != nil {
-		return *m.Email
-	}
-	return ""
-}
-
-func (m *PropertyValue_UserValue) GetAuthDomain() string {
-	if m != nil && m.AuthDomain != nil {
-		return *m.AuthDomain
-	}
-	return ""
-}
-
-func (m *PropertyValue_UserValue) GetNickname() string {
-	if m != nil && m.Nickname != nil {
-		return *m.Nickname
-	}
-	return ""
-}
-
-func (m *PropertyValue_UserValue) GetFederatedIdentity() string {
-	if m != nil && m.FederatedIdentity != nil {
-		return *m.FederatedIdentity
-	}
-	return ""
-}
-
-func (m *PropertyValue_UserValue) GetFederatedProvider() string {
-	if m != nil && m.FederatedProvider != nil {
-		return *m.FederatedProvider
-	}
-	return ""
-}
-
-type PropertyValue_ReferenceValue struct {
-	App                  *string                                     `protobuf:"bytes,13,req,name=app" json:"app,omitempty"`
-	NameSpace            *string                                     `protobuf:"bytes,20,opt,name=name_space,json=nameSpace" json:"name_space,omitempty"`
-	Pathelement          []*PropertyValue_ReferenceValue_PathElement `protobuf:"group,14,rep,name=PathElement,json=pathelement" json:"pathelement,omitempty"`
-	XXX_NoUnkeyedLiteral struct{}                                    `json:"-"`
-	XXX_unrecognized     []byte                                      `json:"-"`
-	XXX_sizecache        int32                                       `json:"-"`
-}
-
-func (m *PropertyValue_ReferenceValue) Reset()         { *m = PropertyValue_ReferenceValue{} }
-func (m *PropertyValue_ReferenceValue) String() string { return proto.CompactTextString(m) }
-func (*PropertyValue_ReferenceValue) ProtoMessage()    {}
-func (*PropertyValue_ReferenceValue) Descriptor() ([]byte, []int) {
-	return fileDescriptor_datastore_v3_83b17b80c34f6179, []int{1, 2}
-}
-func (m *PropertyValue_ReferenceValue) XXX_Unmarshal(b []byte) error {
-	return xxx_messageInfo_PropertyValue_ReferenceValue.Unmarshal(m, b)
-}
-func (m *PropertyValue_ReferenceValue) XXX_Marshal(b []byte, deterministic bool) ([]byte, error) {
-	return xxx_messageInfo_PropertyValue_ReferenceValue.Marshal(b, m, deterministic)
-}
-func (dst *PropertyValue_ReferenceValue) XXX_Merge(src proto.Message) {
-	xxx_messageInfo_PropertyValue_ReferenceValue.Merge(dst, src)
-}
-func (m *PropertyValue_ReferenceValue) XXX_Size() int {
-	return xxx_messageInfo_PropertyValue_ReferenceValue.Size(m)
-}
-func (m *PropertyValue_ReferenceValue) XXX_DiscardUnknown() {
-	xxx_messageInfo_PropertyValue_ReferenceValue.DiscardUnknown(m)
-}
-
-var xxx_messageInfo_PropertyValue_ReferenceValue proto.InternalMessageInfo
-
-func (m *PropertyValue_ReferenceValue) GetApp() string {
-	if m != nil && m.App != nil {
-		return *m.App
-	}
-	return ""
-}
-
-func (m *PropertyValue_ReferenceValue) GetNameSpace() string {
-	if m != nil && m.NameSpace != nil {
-		return *m.NameSpace
-	}
-	return ""
-}
-
-func (m *PropertyValue_ReferenceValue) GetPathelement() []*PropertyValue_ReferenceValue_PathElement {
-	if m != nil {
-		return m.Pathelement
-	}
-	return nil
-}
-
-type PropertyValue_ReferenceValue_PathElement struct {
-	Type                 *string  `protobuf:"bytes,15,req,name=type" json:"type,omitempty"`
-	Id                   *int64   `protobuf:"varint,16,opt,name=id" json:"id,omitempty"`
-	Name                 *string  `protobuf:"bytes,17,opt,name=name" json:"name,omitempty"`
-	XXX_NoUnkeyedLiteral struct{} `json:"-"`
-	XXX_unrecognized     []byte   `json:"-"`
-	XXX_sizecache        int32    `json:"-"`
-}
-
-func (m *PropertyValue_ReferenceValue_PathElement) Reset() {
-	*m = PropertyValue_ReferenceValue_PathElement{}
-}
-func (m *PropertyValue_ReferenceValue_PathElement) String() string { return proto.CompactTextString(m) }
-func (*PropertyValue_ReferenceValue_PathElement) ProtoMessage()    {}
-func (*PropertyValue_ReferenceValue_PathElement) Descriptor() ([]byte, []int) {
-	return fileDescriptor_datastore_v3_83b17b80c34f6179, []int{1, 2, 0}
-}
-func (m *PropertyValue_ReferenceValue_PathElement) XXX_Unmarshal(b []byte) error {
-	return xxx_messageInfo_PropertyValue_ReferenceValue_PathElement.Unmarshal(m, b)
-}
-func (m *PropertyValue_ReferenceValue_PathElement) XXX_Marshal(b []byte, deterministic bool) ([]byte, error) {
-	return xxx_messageInfo_PropertyValue_ReferenceValue_PathElement.Marshal(b, m, deterministic)
-}
-func (dst *PropertyValue_ReferenceValue_PathElement) XXX_Merge(src proto.Message) {
-	xxx_messageInfo_PropertyValue_ReferenceValue_PathElement.Merge(dst, src)
-}
-func (m *PropertyValue_ReferenceValue_PathElement) XXX_Size() int {
-	return xxx_messageInfo_PropertyValue_ReferenceValue_PathElement.Size(m)
-}
-func (m *PropertyValue_ReferenceValue_PathElement) XXX_DiscardUnknown() {
-	xxx_messageInfo_PropertyValue_ReferenceValue_PathElement.DiscardUnknown(m)
-}
-
-var xxx_messageInfo_PropertyValue_ReferenceValue_PathElement proto.InternalMessageInfo
-
-func (m *PropertyValue_ReferenceValue_PathElement) GetType() string {
-	if m != nil && m.Type != nil {
-		return *m.Type
-	}
-	return ""
-}
-
-func (m *PropertyValue_ReferenceValue_PathElement) GetId() int64 {
-	if m != nil && m.Id != nil {
-		return *m.Id
-	}
-	return 0
-}
-
-func (m *PropertyValue_ReferenceValue_PathElement) GetName() string {
-	if m != nil && m.Name != nil {
-		return *m.Name
-	}
-	return ""
-}
-
-type Property struct {
-	Meaning               *Property_Meaning               `protobuf:"varint,1,opt,name=meaning,enum=appengine.Property_Meaning,def=0" json:"meaning,omitempty"`
-	MeaningUri            *string                         `protobuf:"bytes,2,opt,name=meaning_uri,json=meaningUri" json:"meaning_uri,omitempty"`
-	Name                  *string                         `protobuf:"bytes,3,req,name=name" json:"name,omitempty"`
-	Value                 *PropertyValue                  `protobuf:"bytes,5,req,name=value" json:"value,omitempty"`
-	Multiple              *bool                           `protobuf:"varint,4,req,name=multiple" json:"multiple,omitempty"`
-	Searchable            *bool                           `protobuf:"varint,6,opt,name=searchable,def=0" json:"searchable,omitempty"`
-	FtsTokenizationOption *Property_FtsTokenizationOption `protobuf:"varint,8,opt,name=fts_tokenization_option,json=ftsTokenizationOption,enum=appengine.Property_FtsTokenizationOption" json:"fts_tokenization_option,omitempty"`
-	Locale                *string                         `protobuf:"bytes,9,opt,name=locale,def=en" json:"locale,omitempty"`
-	XXX_NoUnkeyedLiteral  struct{}                        `json:"-"`
-	XXX_unrecognized      []byte                          `json:"-"`
-	XXX_sizecache         int32                           `json:"-"`
-}
-
-func (m *Property) Reset()         { *m = Property{} }
-func (m *Property) String() string { return proto.CompactTextString(m) }
-func (*Property) ProtoMessage()    {}
-func (*Property) Descriptor() ([]byte, []int) {
-	return fileDescriptor_datastore_v3_83b17b80c34f6179, []int{2}
-}
-func (m *Property) XXX_Unmarshal(b []byte) error {
-	return xxx_messageInfo_Property.Unmarshal(m, b)
-}
-func (m *Property) XXX_Marshal(b []byte, deterministic bool) ([]byte, error) {
-	return xxx_messageInfo_Property.Marshal(b, m, deterministic)
-}
-func (dst *Property) XXX_Merge(src proto.Message) {
-	xxx_messageInfo_Property.Merge(dst, src)
-}
-func (m *Property) XXX_Size() int {
-	return xxx_messageInfo_Property.Size(m)
-}
-func (m *Property) XXX_DiscardUnknown() {
-	xxx_messageInfo_Property.DiscardUnknown(m)
-}
-
-var xxx_messageInfo_Property proto.InternalMessageInfo
-
-const Default_Property_Meaning Property_Meaning = Property_NO_MEANING
-const Default_Property_Searchable bool = false
-const Default_Property_Locale string = "en"
-
-func (m *Property) GetMeaning() Property_Meaning {
-	if m != nil && m.Meaning != nil {
-		return *m.Meaning
-	}
-	return Default_Property_Meaning
-}
-
-func (m *Property) GetMeaningUri() string {
-	if m != nil && m.MeaningUri != nil {
-		return *m.MeaningUri
-	}
-	return ""
-}
-
-func (m *Property) GetName() string {
-	if m != nil && m.Name != nil {
-		return *m.Name
-	}
-	return ""
-}
-
-func (m *Property) GetValue() *PropertyValue {
-	if m != nil {
-		return m.Value
-	}
-	return nil
-}
-
-func (m *Property) GetMultiple() bool {
-	if m != nil && m.Multiple != nil {
-		return *m.Multiple
-	}
-	return false
-}
-
-func (m *Property) GetSearchable() bool {
-	if m != nil && m.Searchable != nil {
-		return *m.Searchable
-	}
-	return Default_Property_Searchable
-}
-
-func (m *Property) GetFtsTokenizationOption() Property_FtsTokenizationOption {
-	if m != nil && m.FtsTokenizationOption != nil {
-		return *m.FtsTokenizationOption
-	}
-	return Property_HTML
-}
-
-func (m *Property) GetLocale() string {
-	if m != nil && m.Locale != nil {
-		return *m.Locale
-	}
-	return Default_Property_Locale
-}
-
-type Path struct {
-	Element              []*Path_Element `protobuf:"group,1,rep,name=Element,json=element" json:"element,omitempty"`
-	XXX_NoUnkeyedLiteral struct{}        `json:"-"`
-	XXX_unrecognized     []byte          `json:"-"`
-	XXX_sizecache        int32           `json:"-"`
-}
-
-func (m *Path) Reset()         { *m = Path{} }
-func (m *Path) String() string { return proto.CompactTextString(m) }
-func (*Path) ProtoMessage()    {}
-func (*Path) Descriptor() ([]byte, []int) {
-	return fileDescriptor_datastore_v3_83b17b80c34f6179, []int{3}
-}
-func (m *Path) XXX_Unmarshal(b []byte) error {
-	return xxx_messageInfo_Path.Unmarshal(m, b)
-}
-func (m *Path) XXX_Marshal(b []byte, deterministic bool) ([]byte, error) {
-	return xxx_messageInfo_Path.Marshal(b, m, deterministic)
-}
-func (dst *Path) XXX_Merge(src proto.Message) {
-	xxx_messageInfo_Path.Merge(dst, src)
-}
-func (m *Path) XXX_Size() int {
-	return xxx_messageInfo_Path.Size(m)
-}
-func (m *Path) XXX_DiscardUnknown() {
-	xxx_messageInfo_Path.DiscardUnknown(m)
-}
-
-var xxx_messageInfo_Path proto.InternalMessageInfo
-
-func (m *Path) GetElement() []*Path_Element {
-	if m != nil {
-		return m.Element
-	}
-	return nil
-}
-
-type Path_Element struct {
-	Type                 *string  `protobuf:"bytes,2,req,name=type" json:"type,omitempty"`
-	Id                   *int64   `protobuf:"varint,3,opt,name=id" json:"id,omitempty"`
-	Name                 *string  `protobuf:"bytes,4,opt,name=name" json:"name,omitempty"`
-	XXX_NoUnkeyedLiteral struct{} `json:"-"`
-	XXX_unrecognized     []byte   `json:"-"`
-	XXX_sizecache        int32    `json:"-"`
-}
-
-func (m *Path_Element) Reset()         { *m = Path_Element{} }
-func (m *Path_Element) String() string { return proto.CompactTextString(m) }
-func (*Path_Element) ProtoMessage()    {}
-func (*Path_Element) Descriptor() ([]byte, []int) {
-	return fileDescriptor_datastore_v3_83b17b80c34f6179, []int{3, 0}
-}
-func (m *Path_Element) XXX_Unmarshal(b []byte) error {
-	return xxx_messageInfo_Path_Element.Unmarshal(m, b)
-}
-func (m *Path_Element) XXX_Marshal(b []byte, deterministic bool) ([]byte, error) {
-	return xxx_messageInfo_Path_Element.Marshal(b, m, deterministic)
-}
-func (dst *Path_Element) XXX_Merge(src proto.Message) {
-	xxx_messageInfo_Path_Element.Merge(dst, src)
-}
-func (m *Path_Element) XXX_Size() int {
-	return xxx_messageInfo_Path_Element.Size(m)
-}
-func (m *Path_Element) XXX_DiscardUnknown() {
-	xxx_messageInfo_Path_Element.DiscardUnknown(m)
-}
-
-var xxx_messageInfo_Path_Element proto.InternalMessageInfo
-
-func (m *Path_Element) GetType() string {
-	if m != nil && m.Type != nil {
-		return *m.Type
-	}
-	return ""
-}
-
-func (m *Path_Element) GetId() int64 {
-	if m != nil && m.Id != nil {
-		return *m.Id
-	}
-	return 0
-}
-
-func (m *Path_Element) GetName() string {
-	if m != nil && m.Name != nil {
-		return *m.Name
-	}
-	return ""
-}
-
-type Reference struct {
-	App                  *string  `protobuf:"bytes,13,req,name=app" json:"app,omitempty"`
-	NameSpace            *string  `protobuf:"bytes,20,opt,name=name_space,json=nameSpace" json:"name_space,omitempty"`
-	Path                 *Path    `protobuf:"bytes,14,req,name=path" json:"path,omitempty"`
-	XXX_NoUnkeyedLiteral struct{} `json:"-"`
-	XXX_unrecognized     []byte   `json:"-"`
-	XXX_sizecache        int32    `json:"-"`
-}
-
-func (m *Reference) Reset()         { *m = Reference{} }
-func (m *Reference) String() string { return proto.CompactTextString(m) }
-func (*Reference) ProtoMessage()    {}
-func (*Reference) Descriptor() ([]byte, []int) {
-	return fileDescriptor_datastore_v3_83b17b80c34f6179, []int{4}
-}
-func (m *Reference) XXX_Unmarshal(b []byte) error {
-	return xxx_messageInfo_Reference.Unmarshal(m, b)
-}
-func (m *Reference) XXX_Marshal(b []byte, deterministic bool) ([]byte, error) {
-	return xxx_messageInfo_Reference.Marshal(b, m, deterministic)
-}
-func (dst *Reference) XXX_Merge(src proto.Message) {
-	xxx_messageInfo_Reference.Merge(dst, src)
-}
-func (m *Reference) XXX_Size() int {
-	return xxx_messageInfo_Reference.Size(m)
-}
-func (m *Reference) XXX_DiscardUnknown() {
-	xxx_messageInfo_Reference.DiscardUnknown(m)
-}
-
-var xxx_messageInfo_Reference proto.InternalMessageInfo
-
-func (m *Reference) GetApp() string {
-	if m != nil && m.App != nil {
-		return *m.App
-	}
-	return ""
-}
-
-func (m *Reference) GetNameSpace() string {
-	if m != nil && m.NameSpace != nil {
-		return *m.NameSpace
-	}
-	return ""
-}
-
-func (m *Reference) GetPath() *Path {
-	if m != nil {
-		return m.Path
-	}
-	return nil
-}
-
-type User struct {
-	Email                *string  `protobuf:"bytes,1,req,name=email" json:"email,omitempty"`
-	AuthDomain           *string  `protobuf:"bytes,2,req,name=auth_domain,json=authDomain" json:"auth_domain,omitempty"`
-	Nickname             *string  `protobuf:"bytes,3,opt,name=nickname" json:"nickname,omitempty"`
-	FederatedIdentity    *string  `protobuf:"bytes,6,opt,name=federated_identity,json=federatedIdentity" json:"federated_identity,omitempty"`
-	FederatedProvider    *string  `protobuf:"bytes,7,opt,name=federated_provider,json=federatedProvider" json:"federated_provider,omitempty"`
-	XXX_NoUnkeyedLiteral struct{} `json:"-"`
-	XXX_unrecognized     []byte   `json:"-"`
-	XXX_sizecache        int32    `json:"-"`
-}
-
-func (m *User) Reset()         { *m = User{} }
-func (m *User) String() string { return proto.CompactTextString(m) }
-func (*User) ProtoMessage()    {}
-func (*User) Descriptor() ([]byte, []int) {
-	return fileDescriptor_datastore_v3_83b17b80c34f6179, []int{5}
-}
-func (m *User) XXX_Unmarshal(b []byte) error {
-	return xxx_messageInfo_User.Unmarshal(m, b)
-}
-func (m *User) XXX_Marshal(b []byte, deterministic bool) ([]byte, error) {
-	return xxx_messageInfo_User.Marshal(b, m, deterministic)
-}
-func (dst *User) XXX_Merge(src proto.Message) {
-	xxx_messageInfo_User.Merge(dst, src)
-}
-func (m *User) XXX_Size() int {
-	return xxx_messageInfo_User.Size(m)
-}
-func (m *User) XXX_DiscardUnknown() {
-	xxx_messageInfo_User.DiscardUnknown(m)
-}
-
-var xxx_messageInfo_User proto.InternalMessageInfo
-
-func (m *User) GetEmail() string {
-	if m != nil && m.Email != nil {
-		return *m.Email
-	}
-	return ""
-}
-
-func (m *User) GetAuthDomain() string {
-	if m != nil && m.AuthDomain != nil {
-		return *m.AuthDomain
-	}
-	return ""
-}
-
-func (m *User) GetNickname() string {
-	if m != nil && m.Nickname != nil {
-		return *m.Nickname
-	}
-	return ""
-}
-
-func (m *User) GetFederatedIdentity() string {
-	if m != nil && m.FederatedIdentity != nil {
-		return *m.FederatedIdentity
-	}
-	return ""
-}
-
-func (m *User) GetFederatedProvider() string {
-	if m != nil && m.FederatedProvider != nil {
-		return *m.FederatedProvider
-	}
-	return ""
-}
-
-type EntityProto struct {
-	Key                  *Reference        `protobuf:"bytes,13,req,name=key" json:"key,omitempty"`
-	EntityGroup          *Path             `protobuf:"bytes,16,req,name=entity_group,json=entityGroup" json:"entity_group,omitempty"`
-	Owner                *User             `protobuf:"bytes,17,opt,name=owner" json:"owner,omitempty"`
-	Kind                 *EntityProto_Kind `protobuf:"varint,4,opt,name=kind,enum=appengine.EntityProto_Kind" json:"kind,omitempty"`
-	KindUri              *string           `protobuf:"bytes,5,opt,name=kind_uri,json=kindUri" json:"kind_uri,omitempty"`
-	Property             []*Property       `protobuf:"bytes,14,rep,name=property" json:"property,omitempty"`
-	RawProperty          []*Property       `protobuf:"bytes,15,rep,name=raw_property,json=rawProperty" json:"raw_property,omitempty"`
-	Rank                 *int32            `protobuf:"varint,18,opt,name=rank" json:"rank,omitempty"`
-	XXX_NoUnkeyedLiteral struct{}          `json:"-"`
-	XXX_unrecognized     []byte            `json:"-"`
-	XXX_sizecache        int32             `json:"-"`
-}
-
-func (m *EntityProto) Reset()         { *m = EntityProto{} }
-func (m *EntityProto) String() string { return proto.CompactTextString(m) }
-func (*EntityProto) ProtoMessage()    {}
-func (*EntityProto) Descriptor() ([]byte, []int) {
-	return fileDescriptor_datastore_v3_83b17b80c34f6179, []int{6}
-}
-func (m *EntityProto) XXX_Unmarshal(b []byte) error {
-	return xxx_messageInfo_EntityProto.Unmarshal(m, b)
-}
-func (m *EntityProto) XXX_Marshal(b []byte, deterministic bool) ([]byte, error) {
-	return xxx_messageInfo_EntityProto.Marshal(b, m, deterministic)
-}
-func (dst *EntityProto) XXX_Merge(src proto.Message) {
-	xxx_messageInfo_EntityProto.Merge(dst, src)
-}
-func (m *EntityProto) XXX_Size() int {
-	return xxx_messageInfo_EntityProto.Size(m)
-}
-func (m *EntityProto) XXX_DiscardUnknown() {
-	xxx_messageInfo_EntityProto.DiscardUnknown(m)
-}
-
-var xxx_messageInfo_EntityProto proto.InternalMessageInfo
-
-func (m *EntityProto) GetKey() *Reference {
-	if m != nil {
-		return m.Key
-	}
-	return nil
-}
-
-func (m *EntityProto) GetEntityGroup() *Path {
-	if m != nil {
-		return m.EntityGroup
-	}
-	return nil
-}
-
-func (m *EntityProto) GetOwner() *User {
-	if m != nil {
-		return m.Owner
-	}
-	return nil
-}
-
-func (m *EntityProto) GetKind() EntityProto_Kind {
-	if m != nil && m.Kind != nil {
-		return *m.Kind
-	}
-	return EntityProto_GD_CONTACT
-}
-
-func (m *EntityProto) GetKindUri() string {
-	if m != nil && m.KindUri != nil {
-		return *m.KindUri
-	}
-	return ""
-}
-
-func (m *EntityProto) GetProperty() []*Property {
-	if m != nil {
-		return m.Property
-	}
-	return nil
-}
-
-func (m *EntityProto) GetRawProperty() []*Property {
-	if m != nil {
-		return m.RawProperty
-	}
-	return nil
-}
-
-func (m *EntityProto) GetRank() int32 {
-	if m != nil && m.Rank != nil {
-		return *m.Rank
-	}
-	return 0
-}
-
-type CompositeProperty struct {
-	IndexId              *int64   `protobuf:"varint,1,req,name=index_id,json=indexId" json:"index_id,omitempty"`
-	Value                []string `protobuf:"bytes,2,rep,name=value" json:"value,omitempty"`
-	XXX_NoUnkeyedLiteral struct{} `json:"-"`
-	XXX_unrecognized     []byte   `json:"-"`
-	XXX_sizecache        int32    `json:"-"`
-}
-
-func (m *CompositeProperty) Reset()         { *m = CompositeProperty{} }
-func (m *CompositeProperty) String() string { return proto.CompactTextString(m) }
-func (*CompositeProperty) ProtoMessage()    {}
-func (*CompositeProperty) Descriptor() ([]byte, []int) {
-	return fileDescriptor_datastore_v3_83b17b80c34f6179, []int{7}
-}
-func (m *CompositeProperty) XXX_Unmarshal(b []byte) error {
-	return xxx_messageInfo_CompositeProperty.Unmarshal(m, b)
-}
-func (m *CompositeProperty) XXX_Marshal(b []byte, deterministic bool) ([]byte, error) {
-	return xxx_messageInfo_CompositeProperty.Marshal(b, m, deterministic)
-}
-func (dst *CompositeProperty) XXX_Merge(src proto.Message) {
-	xxx_messageInfo_CompositeProperty.Merge(dst, src)
-}
-func (m *CompositeProperty) XXX_Size() int {
-	return xxx_messageInfo_CompositeProperty.Size(m)
-}
-func (m *CompositeProperty) XXX_DiscardUnknown() {
-	xxx_messageInfo_CompositeProperty.DiscardUnknown(m)
-}
-
-var xxx_messageInfo_CompositeProperty proto.InternalMessageInfo
-
-func (m *CompositeProperty) GetIndexId() int64 {
-	if m != nil && m.IndexId != nil {
-		return *m.IndexId
-	}
-	return 0
-}
-
-func (m *CompositeProperty) GetValue() []string {
-	if m != nil {
-		return m.Value
-	}
-	return nil
-}
-
-type Index struct {
-	EntityType           *string           `protobuf:"bytes,1,req,name=entity_type,json=entityType" json:"entity_type,omitempty"`
-	Ancestor             *bool             `protobuf:"varint,5,req,name=ancestor" json:"ancestor,omitempty"`
-	Property             []*Index_Property `protobuf:"group,2,rep,name=Property,json=property" json:"property,omitempty"`
-	XXX_NoUnkeyedLiteral struct{}          `json:"-"`
-	XXX_unrecognized     []byte            `json:"-"`
-	XXX_sizecache        int32             `json:"-"`
-}
-
-func (m *Index) Reset()         { *m = Index{} }
-func (m *Index) String() string { return proto.CompactTextString(m) }
-func (*Index) ProtoMessage()    {}
-func (*Index) Descriptor() ([]byte, []int) {
-	return fileDescriptor_datastore_v3_83b17b80c34f6179, []int{8}
-}
-func (m *Index) XXX_Unmarshal(b []byte) error {
-	return xxx_messageInfo_Index.Unmarshal(m, b)
-}
-func (m *Index) XXX_Marshal(b []byte, deterministic bool) ([]byte, error) {
-	return xxx_messageInfo_Index.Marshal(b, m, deterministic)
-}
-func (dst *Index) XXX_Merge(src proto.Message) {
-	xxx_messageInfo_Index.Merge(dst, src)
-}
-func (m *Index) XXX_Size() int {
-	return xxx_messageInfo_Index.Size(m)
-}
-func (m *Index) XXX_DiscardUnknown() {
-	xxx_messageInfo_Index.DiscardUnknown(m)
-}
-
-var xxx_messageInfo_Index proto.InternalMessageInfo
-
-func (m *Index) GetEntityType() string {
-	if m != nil && m.EntityType != nil {
-		return *m.EntityType
-	}
-	return ""
-}
-
-func (m *Index) GetAncestor() bool {
-	if m != nil && m.Ancestor != nil {
-		return *m.Ancestor
-	}
-	return false
-}
-
-func (m *Index) GetProperty() []*Index_Property {
-	if m != nil {
-		return m.Property
-	}
-	return nil
-}
-
-type Index_Property struct {
-	Name                 *string                   `protobuf:"bytes,3,req,name=name" json:"name,omitempty"`
-	Direction            *Index_Property_Direction `protobuf:"varint,4,opt,name=direction,enum=appengine.Index_Property_Direction,def=1" json:"direction,omitempty"`
-	XXX_NoUnkeyedLiteral struct{}                  `json:"-"`
-	XXX_unrecognized     []byte                    `json:"-"`
-	XXX_sizecache        int32                     `json:"-"`
-}
-
-func (m *Index_Property) Reset()         { *m = Index_Property{} }
-func (m *Index_Property) String() string { return proto.CompactTextString(m) }
-func (*Index_Property) ProtoMessage()    {}
-func (*Index_Property) Descriptor() ([]byte, []int) {
-	return fileDescriptor_datastore_v3_83b17b80c34f6179, []int{8, 0}
-}
-func (m *Index_Property) XXX_Unmarshal(b []byte) error {
-	return xxx_messageInfo_Index_Property.Unmarshal(m, b)
-}
-func (m *Index_Property) XXX_Marshal(b []byte, deterministic bool) ([]byte, error) {
-	return xxx_messageInfo_Index_Property.Marshal(b, m, deterministic)
-}
-func (dst *Index_Property) XXX_Merge(src proto.Message) {
-	xxx_messageInfo_Index_Property.Merge(dst, src)
-}
-func (m *Index_Property) XXX_Size() int {
-	return xxx_messageInfo_Index_Property.Size(m)
-}
-func (m *Index_Property) XXX_DiscardUnknown() {
-	xxx_messageInfo_Index_Property.DiscardUnknown(m)
-}
-
-var xxx_messageInfo_Index_Property proto.InternalMessageInfo
-
-const Default_Index_Property_Direction Index_Property_Direction = Index_Property_ASCENDING
-
-func (m *Index_Property) GetName() string {
-	if m != nil && m.Name != nil {
-		return *m.Name
-	}
-	return ""
-}
-
-func (m *Index_Property) GetDirection() Index_Property_Direction {
-	if m != nil && m.Direction != nil {
-		return *m.Direction
-	}
-	return Default_Index_Property_Direction
-}
-
-type CompositeIndex struct {
-	AppId                *string               `protobuf:"bytes,1,req,name=app_id,json=appId" json:"app_id,omitempty"`
-	Id                   *int64                `protobuf:"varint,2,req,name=id" json:"id,omitempty"`
-	Definition           *Index                `protobuf:"bytes,3,req,name=definition" json:"definition,omitempty"`
-	State                *CompositeIndex_State `protobuf:"varint,4,req,name=state,enum=appengine.CompositeIndex_State" json:"state,omitempty"`
-	OnlyUseIfRequired    *bool                 `protobuf:"varint,6,opt,name=only_use_if_required,json=onlyUseIfRequired,def=0" json:"only_use_if_required,omitempty"`
-	XXX_NoUnkeyedLiteral struct{}              `json:"-"`
-	XXX_unrecognized     []byte                `json:"-"`
-	XXX_sizecache        int32                 `json:"-"`
-}
-
-func (m *CompositeIndex) Reset()         { *m = CompositeIndex{} }
-func (m *CompositeIndex) String() string { return proto.CompactTextString(m) }
-func (*CompositeIndex) ProtoMessage()    {}
-func (*CompositeIndex) Descriptor() ([]byte, []int) {
-	return fileDescriptor_datastore_v3_83b17b80c34f6179, []int{9}
-}
-func (m *CompositeIndex) XXX_Unmarshal(b []byte) error {
-	return xxx_messageInfo_CompositeIndex.Unmarshal(m, b)
-}
-func (m *CompositeIndex) XXX_Marshal(b []byte, deterministic bool) ([]byte, error) {
-	return xxx_messageInfo_CompositeIndex.Marshal(b, m, deterministic)
-}
-func (dst *CompositeIndex) XXX_Merge(src proto.Message) {
-	xxx_messageInfo_CompositeIndex.Merge(dst, src)
-}
-func (m *CompositeIndex) XXX_Size() int {
-	return xxx_messageInfo_CompositeIndex.Size(m)
-}
-func (m *CompositeIndex) XXX_DiscardUnknown() {
-	xxx_messageInfo_CompositeIndex.DiscardUnknown(m)
-}
-
-var xxx_messageInfo_CompositeIndex proto.InternalMessageInfo
-
-const Default_CompositeIndex_OnlyUseIfRequired bool = false
-
-func (m *CompositeIndex) GetAppId() string {
-	if m != nil && m.AppId != nil {
-		return *m.AppId
-	}
-	return ""
-}
-
-func (m *CompositeIndex) GetId() int64 {
-	if m != nil && m.Id != nil {
-		return *m.Id
-	}
-	return 0
-}
-
-func (m *CompositeIndex) GetDefinition() *Index {
-	if m != nil {
-		return m.Definition
-	}
-	return nil
-}
-
-func (m *CompositeIndex) GetState() CompositeIndex_State {
-	if m != nil && m.State != nil {
-		return *m.State
-	}
-	return CompositeIndex_WRITE_ONLY
-}
-
-func (m *CompositeIndex) GetOnlyUseIfRequired() bool {
-	if m != nil && m.OnlyUseIfRequired != nil {
-		return *m.OnlyUseIfRequired
-	}
-	return Default_CompositeIndex_OnlyUseIfRequired
-}
-
-type IndexPostfix struct {
-	IndexValue           []*IndexPostfix_IndexValue `protobuf:"bytes,1,rep,name=index_value,json=indexValue" json:"index_value,omitempty"`
-	Key                  *Reference                 `protobuf:"bytes,2,opt,name=key" json:"key,omitempty"`
-	Before               *bool                      `protobuf:"varint,3,opt,name=before,def=1" json:"before,omitempty"`
-	XXX_NoUnkeyedLiteral struct{}                   `json:"-"`
-	XXX_unrecognized     []byte                     `json:"-"`
-	XXX_sizecache        int32                      `json:"-"`
-}
-
-func (m *IndexPostfix) Reset()         { *m = IndexPostfix{} }
-func (m *IndexPostfix) String() string { return proto.CompactTextString(m) }
-func (*IndexPostfix) ProtoMessage()    {}
-func (*IndexPostfix) Descriptor() ([]byte, []int) {
-	return fileDescriptor_datastore_v3_83b17b80c34f6179, []int{10}
-}
-func (m *IndexPostfix) XXX_Unmarshal(b []byte) error {
-	return xxx_messageInfo_IndexPostfix.Unmarshal(m, b)
-}
-func (m *IndexPostfix) XXX_Marshal(b []byte, deterministic bool) ([]byte, error) {
-	return xxx_messageInfo_IndexPostfix.Marshal(b, m, deterministic)
-}
-func (dst *IndexPostfix) XXX_Merge(src proto.Message) {
-	xxx_messageInfo_IndexPostfix.Merge(dst, src)
-}
-func (m *IndexPostfix) XXX_Size() int {
-	return xxx_messageInfo_IndexPostfix.Size(m)
-}
-func (m *IndexPostfix) XXX_DiscardUnknown() {
-	xxx_messageInfo_IndexPostfix.DiscardUnknown(m)
-}
-
-var xxx_messageInfo_IndexPostfix proto.InternalMessageInfo
-
-const Default_IndexPostfix_Before bool = true
-
-func (m *IndexPostfix) GetIndexValue() []*IndexPostfix_IndexValue {
-	if m != nil {
-		return m.IndexValue
-	}
-	return nil
-}
-
-func (m *IndexPostfix) GetKey() *Reference {
-	if m != nil {
-		return m.Key
-	}
-	return nil
-}
-
-func (m *IndexPostfix) GetBefore() bool {
-	if m != nil && m.Before != nil {
-		return *m.Before
-	}
-	return Default_IndexPostfix_Before
-}
-
-type IndexPostfix_IndexValue struct {
-	PropertyName         *string        `protobuf:"bytes,1,req,name=property_name,json=propertyName" json:"property_name,omitempty"`
-	Value                *PropertyValue `protobuf:"bytes,2,req,name=value" json:"value,omitempty"`
-	XXX_NoUnkeyedLiteral struct{}       `json:"-"`
-	XXX_unrecognized     []byte         `json:"-"`
-	XXX_sizecache        int32          `json:"-"`
-}
-
-func (m *IndexPostfix_IndexValue) Reset()         { *m = IndexPostfix_IndexValue{} }
-func (m *IndexPostfix_IndexValue) String() string { return proto.CompactTextString(m) }
-func (*IndexPostfix_IndexValue) ProtoMessage()    {}
-func (*IndexPostfix_IndexValue) Descriptor() ([]byte, []int) {
-	return fileDescriptor_datastore_v3_83b17b80c34f6179, []int{10, 0}
-}
-func (m *IndexPostfix_IndexValue) XXX_Unmarshal(b []byte) error {
-	return xxx_messageInfo_IndexPostfix_IndexValue.Unmarshal(m, b)
-}
-func (m *IndexPostfix_IndexValue) XXX_Marshal(b []byte, deterministic bool) ([]byte, error) {
-	return xxx_messageInfo_IndexPostfix_IndexValue.Marshal(b, m, deterministic)
-}
-func (dst *IndexPostfix_IndexValue) XXX_Merge(src proto.Message) {
-	xxx_messageInfo_IndexPostfix_IndexValue.Merge(dst, src)
-}
-func (m *IndexPostfix_IndexValue) XXX_Size() int {
-	return xxx_messageInfo_IndexPostfix_IndexValue.Size(m)
-}
-func (m *IndexPostfix_IndexValue) XXX_DiscardUnknown() {
-	xxx_messageInfo_IndexPostfix_IndexValue.DiscardUnknown(m)
-}
-
-var xxx_messageInfo_IndexPostfix_IndexValue proto.InternalMessageInfo
-
-func (m *IndexPostfix_IndexValue) GetPropertyName() string {
-	if m != nil && m.PropertyName != nil {
-		return *m.PropertyName
-	}
-	return ""
-}
-
-func (m *IndexPostfix_IndexValue) GetValue() *PropertyValue {
-	if m != nil {
-		return m.Value
-	}
-	return nil
-}
-
-type IndexPosition struct {
-	Key                  *string  `protobuf:"bytes,1,opt,name=key" json:"key,omitempty"`
-	Before               *bool    `protobuf:"varint,2,opt,name=before,def=1" json:"before,omitempty"`
-	XXX_NoUnkeyedLiteral struct{} `json:"-"`
-	XXX_unrecognized     []byte   `json:"-"`
-	XXX_sizecache        int32    `json:"-"`
-}
-
-func (m *IndexPosition) Reset()         { *m = IndexPosition{} }
-func (m *IndexPosition) String() string { return proto.CompactTextString(m) }
-func (*IndexPosition) ProtoMessage()    {}
-func (*IndexPosition) Descriptor() ([]byte, []int) {
-	return fileDescriptor_datastore_v3_83b17b80c34f6179, []int{11}
-}
-func (m *IndexPosition) XXX_Unmarshal(b []byte) error {
-	return xxx_messageInfo_IndexPosition.Unmarshal(m, b)
-}
-func (m *IndexPosition) XXX_Marshal(b []byte, deterministic bool) ([]byte, error) {
-	return xxx_messageInfo_IndexPosition.Marshal(b, m, deterministic)
-}
-func (dst *IndexPosition) XXX_Merge(src proto.Message) {
-	xxx_messageInfo_IndexPosition.Merge(dst, src)
-}
-func (m *IndexPosition) XXX_Size() int {
-	return xxx_messageInfo_IndexPosition.Size(m)
-}
-func (m *IndexPosition) XXX_DiscardUnknown() {
-	xxx_messageInfo_IndexPosition.DiscardUnknown(m)
-}
-
-var xxx_messageInfo_IndexPosition proto.InternalMessageInfo
-
-const Default_IndexPosition_Before bool = true
-
-func (m *IndexPosition) GetKey() string {
-	if m != nil && m.Key != nil {
-		return *m.Key
-	}
-	return ""
-}
-
-func (m *IndexPosition) GetBefore() bool {
-	if m != nil && m.Before != nil {
-		return *m.Before
-	}
-	return Default_IndexPosition_Before
-}
-
-type Snapshot struct {
-	Ts                   *int64   `protobuf:"varint,1,req,name=ts" json:"ts,omitempty"`
-	XXX_NoUnkeyedLiteral struct{} `json:"-"`
-	XXX_unrecognized     []byte   `json:"-"`
-	XXX_sizecache        int32    `json:"-"`
-}
-
-func (m *Snapshot) Reset()         { *m = Snapshot{} }
-func (m *Snapshot) String() string { return proto.CompactTextString(m) }
-func (*Snapshot) ProtoMessage()    {}
-func (*Snapshot) Descriptor() ([]byte, []int) {
-	return fileDescriptor_datastore_v3_83b17b80c34f6179, []int{12}
-}
-func (m *Snapshot) XXX_Unmarshal(b []byte) error {
-	return xxx_messageInfo_Snapshot.Unmarshal(m, b)
-}
-func (m *Snapshot) XXX_Marshal(b []byte, deterministic bool) ([]byte, error) {
-	return xxx_messageInfo_Snapshot.Marshal(b, m, deterministic)
-}
-func (dst *Snapshot) XXX_Merge(src proto.Message) {
-	xxx_messageInfo_Snapshot.Merge(dst, src)
-}
-func (m *Snapshot) XXX_Size() int {
-	return xxx_messageInfo_Snapshot.Size(m)
-}
-func (m *Snapshot) XXX_DiscardUnknown() {
-	xxx_messageInfo_Snapshot.DiscardUnknown(m)
-}
-
-var xxx_messageInfo_Snapshot proto.InternalMessageInfo
-
-func (m *Snapshot) GetTs() int64 {
-	if m != nil && m.Ts != nil {
-		return *m.Ts
-	}
-	return 0
-}
-
-type InternalHeader struct {
-	Qos                  *string  `protobuf:"bytes,1,opt,name=qos" json:"qos,omitempty"`
-	XXX_NoUnkeyedLiteral struct{} `json:"-"`
-	XXX_unrecognized     []byte   `json:"-"`
-	XXX_sizecache        int32    `json:"-"`
-}
-
-func (m *InternalHeader) Reset()         { *m = InternalHeader{} }
-func (m *InternalHeader) String() string { return proto.CompactTextString(m) }
-func (*InternalHeader) ProtoMessage()    {}
-func (*InternalHeader) Descriptor() ([]byte, []int) {
-	return fileDescriptor_datastore_v3_83b17b80c34f6179, []int{13}
-}
-func (m *InternalHeader) XXX_Unmarshal(b []byte) error {
-	return xxx_messageInfo_InternalHeader.Unmarshal(m, b)
-}
-func (m *InternalHeader) XXX_Marshal(b []byte, deterministic bool) ([]byte, error) {
-	return xxx_messageInfo_InternalHeader.Marshal(b, m, deterministic)
-}
-func (dst *InternalHeader) XXX_Merge(src proto.Message) {
-	xxx_messageInfo_InternalHeader.Merge(dst, src)
-}
-func (m *InternalHeader) XXX_Size() int {
-	return xxx_messageInfo_InternalHeader.Size(m)
-}
-func (m *InternalHeader) XXX_DiscardUnknown() {
-	xxx_messageInfo_InternalHeader.DiscardUnknown(m)
-}
-
-var xxx_messageInfo_InternalHeader proto.InternalMessageInfo
-
-func (m *InternalHeader) GetQos() string {
-	if m != nil && m.Qos != nil {
-		return *m.Qos
-	}
-	return ""
-}
-
-type Transaction struct {
-	Header               *InternalHeader `protobuf:"bytes,4,opt,name=header" json:"header,omitempty"`
-	Handle               *uint64         `protobuf:"fixed64,1,req,name=handle" json:"handle,omitempty"`
-	App                  *string         `protobuf:"bytes,2,req,name=app" json:"app,omitempty"`
-	MarkChanges          *bool           `protobuf:"varint,3,opt,name=mark_changes,json=markChanges,def=0" json:"mark_changes,omitempty"`
-	XXX_NoUnkeyedLiteral struct{}        `json:"-"`
-	XXX_unrecognized     []byte          `json:"-"`
-	XXX_sizecache        int32           `json:"-"`
-}
-
-func (m *Transaction) Reset()         { *m = Transaction{} }
-func (m *Transaction) String() string { return proto.CompactTextString(m) }
-func (*Transaction) ProtoMessage()    {}
-func (*Transaction) Descriptor() ([]byte, []int) {
-	return fileDescriptor_datastore_v3_83b17b80c34f6179, []int{14}
-}
-func (m *Transaction) XXX_Unmarshal(b []byte) error {
-	return xxx_messageInfo_Transaction.Unmarshal(m, b)
-}
-func (m *Transaction) XXX_Marshal(b []byte, deterministic bool) ([]byte, error) {
-	return xxx_messageInfo_Transaction.Marshal(b, m, deterministic)
-}
-func (dst *Transaction) XXX_Merge(src proto.Message) {
-	xxx_messageInfo_Transaction.Merge(dst, src)
-}
-func (m *Transaction) XXX_Size() int {
-	return xxx_messageInfo_Transaction.Size(m)
-}
-func (m *Transaction) XXX_DiscardUnknown() {
-	xxx_messageInfo_Transaction.DiscardUnknown(m)
-}
-
-var xxx_messageInfo_Transaction proto.InternalMessageInfo
-
-const Default_Transaction_MarkChanges bool = false
-
-func (m *Transaction) GetHeader() *InternalHeader {
-	if m != nil {
-		return m.Header
-	}
-	return nil
-}
-
-func (m *Transaction) GetHandle() uint64 {
-	if m != nil && m.Handle != nil {
-		return *m.Handle
-	}
-	return 0
-}
-
-func (m *Transaction) GetApp() string {
-	if m != nil && m.App != nil {
-		return *m.App
-	}
-	return ""
-}
-
-func (m *Transaction) GetMarkChanges() bool {
-	if m != nil && m.MarkChanges != nil {
-		return *m.MarkChanges
-	}
-	return Default_Transaction_MarkChanges
-}
-
-type Query struct {
-	Header               *InternalHeader   `protobuf:"bytes,39,opt,name=header" json:"header,omitempty"`
-	App                  *string           `protobuf:"bytes,1,req,name=app" json:"app,omitempty"`
-	NameSpace            *string           `protobuf:"bytes,29,opt,name=name_space,json=nameSpace" json:"name_space,omitempty"`
-	Kind                 *string           `protobuf:"bytes,3,opt,name=kind" json:"kind,omitempty"`
-	Ancestor             *Reference        `protobuf:"bytes,17,opt,name=ancestor" json:"ancestor,omitempty"`
-	Filter               []*Query_Filter   `protobuf:"group,4,rep,name=Filter,json=filter" json:"filter,omitempty"`
-	SearchQuery          *string           `protobuf:"bytes,8,opt,name=search_query,json=searchQuery" json:"search_query,omitempty"`
-	Order                []*Query_Order    `protobuf:"group,9,rep,name=Order,json=order" json:"order,omitempty"`
-	Hint                 *Query_Hint       `protobuf:"varint,18,opt,name=hint,enum=appengine.Query_Hint" json:"hint,omitempty"`
-	Count                *int32            `protobuf:"varint,23,opt,name=count" json:"count,omitempty"`
-	Offset               *int32            `protobuf:"varint,12,opt,name=offset,def=0" json:"offset,omitempty"`
-	Limit                *int32            `protobuf:"varint,16,opt,name=limit" json:"limit,omitempty"`
-	CompiledCursor       *CompiledCursor   `protobuf:"bytes,30,opt,name=compiled_cursor,json=compiledCursor" json:"compiled_cursor,omitempty"`
-	EndCompiledCursor    *CompiledCursor   `protobuf:"bytes,31,opt,name=end_compiled_cursor,json=endCompiledCursor" json:"end_compiled_cursor,omitempty"`
-	CompositeIndex       []*CompositeIndex `protobuf:"bytes,19,rep,name=composite_index,json=compositeIndex" json:"composite_index,omitempty"`
-	RequirePerfectPlan   *bool             `protobuf:"varint,20,opt,name=require_perfect_plan,json=requirePerfectPlan,def=0" json:"require_perfect_plan,omitempty"`
-	KeysOnly             *bool             `protobuf:"varint,21,opt,name=keys_only,json=keysOnly,def=0" json:"keys_only,omitempty"`
-	Transaction          *Transaction      `protobuf:"bytes,22,opt,name=transaction" json:"transaction,omitempty"`
-	Compile              *bool             `protobuf:"varint,25,opt,name=compile,def=0" json:"compile,omitempty"`
-	FailoverMs           *int64            `protobuf:"varint,26,opt,name=failover_ms,json=failoverMs" json:"failover_ms,omitempty"`
-	Strong               *bool             `protobuf:"varint,32,opt,name=strong" json:"strong,omitempty"`
-	PropertyName         []string          `protobuf:"bytes,33,rep,name=property_name,json=propertyName" json:"property_name,omitempty"`
-	GroupByPropertyName  []string          `protobuf:"bytes,34,rep,name=group_by_property_name,json=groupByPropertyName" json:"group_by_property_name,omitempty"`
-	Distinct             *bool             `protobuf:"varint,24,opt,name=distinct" json:"distinct,omitempty"`
-	MinSafeTimeSeconds   *int64            `protobuf:"varint,35,opt,name=min_safe_time_seconds,json=minSafeTimeSeconds" json:"min_safe_time_seconds,omitempty"`
-	SafeReplicaName      []string          `protobuf:"bytes,36,rep,name=safe_replica_name,json=safeReplicaName" json:"safe_replica_name,omitempty"`
-	PersistOffset        *bool             `protobuf:"varint,37,opt,name=persist_offset,json=persistOffset,def=0" json:"persist_offset,omitempty"`
-	XXX_NoUnkeyedLiteral struct{}          `json:"-"`
-	XXX_unrecognized     []byte            `json:"-"`
-	XXX_sizecache        int32             `json:"-"`
-}
-
-func (m *Query) Reset()         { *m = Query{} }
-func (m *Query) String() string { return proto.CompactTextString(m) }
-func (*Query) ProtoMessage()    {}
-func (*Query) Descriptor() ([]byte, []int) {
-	return fileDescriptor_datastore_v3_83b17b80c34f6179, []int{15}
-}
-func (m *Query) XXX_Unmarshal(b []byte) error {
-	return xxx_messageInfo_Query.Unmarshal(m, b)
-}
-func (m *Query) XXX_Marshal(b []byte, deterministic bool) ([]byte, error) {
-	return xxx_messageInfo_Query.Marshal(b, m, deterministic)
-}
-func (dst *Query) XXX_Merge(src proto.Message) {
-	xxx_messageInfo_Query.Merge(dst, src)
-}
-func (m *Query) XXX_Size() int {
-	return xxx_messageInfo_Query.Size(m)
-}
-func (m *Query) XXX_DiscardUnknown() {
-	xxx_messageInfo_Query.DiscardUnknown(m)
-}
-
-var xxx_messageInfo_Query proto.InternalMessageInfo
-
-const Default_Query_Offset int32 = 0
-const Default_Query_RequirePerfectPlan bool = false
-const Default_Query_KeysOnly bool = false
-const Default_Query_Compile bool = false
-const Default_Query_PersistOffset bool = false
-
-func (m *Query) GetHeader() *InternalHeader {
-	if m != nil {
-		return m.Header
-	}
-	return nil
-}
-
-func (m *Query) GetApp() string {
-	if m != nil && m.App != nil {
-		return *m.App
-	}
-	return ""
-}
-
-func (m *Query) GetNameSpace() string {
-	if m != nil && m.NameSpace != nil {
-		return *m.NameSpace
-	}
-	return ""
-}
-
-func (m *Query) GetKind() string {
-	if m != nil && m.Kind != nil {
-		return *m.Kind
-	}
-	return ""
-}
-
-func (m *Query) GetAncestor() *Reference {
-	if m != nil {
-		return m.Ancestor
-	}
-	return nil
-}
-
-func (m *Query) GetFilter() []*Query_Filter {
-	if m != nil {
-		return m.Filter
-	}
-	return nil
-}
-
-func (m *Query) GetSearchQuery() string {
-	if m != nil && m.SearchQuery != nil {
-		return *m.SearchQuery
-	}
-	return ""
-}
-
-func (m *Query) GetOrder() []*Query_Order {
-	if m != nil {
-		return m.Order
-	}
-	return nil
-}
-
-func (m *Query) GetHint() Query_Hint {
-	if m != nil && m.Hint != nil {
-		return *m.Hint
-	}
-	return Query_ORDER_FIRST
-}
-
-func (m *Query) GetCount() int32 {
-	if m != nil && m.Count != nil {
-		return *m.Count
-	}
-	return 0
-}
-
-func (m *Query) GetOffset() int32 {
-	if m != nil && m.Offset != nil {
-		return *m.Offset
-	}
-	return Default_Query_Offset
-}
-
-func (m *Query) GetLimit() int32 {
-	if m != nil && m.Limit != nil {
-		return *m.Limit
-	}
-	return 0
-}
-
-func (m *Query) GetCompiledCursor() *CompiledCursor {
-	if m != nil {
-		return m.CompiledCursor
-	}
-	return nil
-}
-
-func (m *Query) GetEndCompiledCursor() *CompiledCursor {
-	if m != nil {
-		return m.EndCompiledCursor
-	}
-	return nil
-}
-
-func (m *Query) GetCompositeIndex() []*CompositeIndex {
-	if m != nil {
-		return m.CompositeIndex
-	}
-	return nil
-}
-
-func (m *Query) GetRequirePerfectPlan() bool {
-	if m != nil && m.RequirePerfectPlan != nil {
-		return *m.RequirePerfectPlan
-	}
-	return Default_Query_RequirePerfectPlan
-}
-
-func (m *Query) GetKeysOnly() bool {
-	if m != nil && m.KeysOnly != nil {
-		return *m.KeysOnly
-	}
-	return Default_Query_KeysOnly
-}
-
-func (m *Query) GetTransaction() *Transaction {
-	if m != nil {
-		return m.Transaction
-	}
-	return nil
-}
-
-func (m *Query) GetCompile() bool {
-	if m != nil && m.Compile != nil {
-		return *m.Compile
-	}
-	return Default_Query_Compile
-}
-
-func (m *Query) GetFailoverMs() int64 {
-	if m != nil && m.FailoverMs != nil {
-		return *m.FailoverMs
-	}
-	return 0
-}
-
-func (m *Query) GetStrong() bool {
-	if m != nil && m.Strong != nil {
-		return *m.Strong
-	}
-	return false
-}
-
-func (m *Query) GetPropertyName() []string {
-	if m != nil {
-		return m.PropertyName
-	}
-	return nil
-}
-
-func (m *Query) GetGroupByPropertyName() []string {
-	if m != nil {
-		return m.GroupByPropertyName
-	}
-	return nil
-}
-
-func (m *Query) GetDistinct() bool {
-	if m != nil && m.Distinct != nil {
-		return *m.Distinct
-	}
-	return false
-}
-
-func (m *Query) GetMinSafeTimeSeconds() int64 {
-	if m != nil && m.MinSafeTimeSeconds != nil {
-		return *m.MinSafeTimeSeconds
-	}
-	return 0
-}
-
-func (m *Query) GetSafeReplicaName() []string {
-	if m != nil {
-		return m.SafeReplicaName
-	}
-	return nil
-}
-
-func (m *Query) GetPersistOffset() bool {
-	if m != nil && m.PersistOffset != nil {
-		return *m.PersistOffset
-	}
-	return Default_Query_PersistOffset
-}
-
-type Query_Filter struct {
-	Op                   *Query_Filter_Operator `protobuf:"varint,6,req,name=op,enum=appengine.Query_Filter_Operator" json:"op,omitempty"`
-	Property             []*Property            `protobuf:"bytes,14,rep,name=property" json:"property,omitempty"`
-	XXX_NoUnkeyedLiteral struct{}               `json:"-"`
-	XXX_unrecognized     []byte                 `json:"-"`
-	XXX_sizecache        int32                  `json:"-"`
-}
-
-func (m *Query_Filter) Reset()         { *m = Query_Filter{} }
-func (m *Query_Filter) String() string { return proto.CompactTextString(m) }
-func (*Query_Filter) ProtoMessage()    {}
-func (*Query_Filter) Descriptor() ([]byte, []int) {
-	return fileDescriptor_datastore_v3_83b17b80c34f6179, []int{15, 0}
-}
-func (m *Query_Filter) XXX_Unmarshal(b []byte) error {
-	return xxx_messageInfo_Query_Filter.Unmarshal(m, b)
-}
-func (m *Query_Filter) XXX_Marshal(b []byte, deterministic bool) ([]byte, error) {
-	return xxx_messageInfo_Query_Filter.Marshal(b, m, deterministic)
-}
-func (dst *Query_Filter) XXX_Merge(src proto.Message) {
-	xxx_messageInfo_Query_Filter.Merge(dst, src)
-}
-func (m *Query_Filter) XXX_Size() int {
-	return xxx_messageInfo_Query_Filter.Size(m)
-}
-func (m *Query_Filter) XXX_DiscardUnknown() {
-	xxx_messageInfo_Query_Filter.DiscardUnknown(m)
-}
-
-var xxx_messageInfo_Query_Filter proto.InternalMessageInfo
-
-func (m *Query_Filter) GetOp() Query_Filter_Operator {
-	if m != nil && m.Op != nil {
-		return *m.Op
-	}
-	return Query_Filter_LESS_THAN
-}
-
-func (m *Query_Filter) GetProperty() []*Property {
-	if m != nil {
-		return m.Property
-	}
-	return nil
-}
-
-type Query_Order struct {
-	Property             *string                `protobuf:"bytes,10,req,name=property" json:"property,omitempty"`
-	Direction            *Query_Order_Direction `protobuf:"varint,11,opt,name=direction,enum=appengine.Query_Order_Direction,def=1" json:"direction,omitempty"`
-	XXX_NoUnkeyedLiteral struct{}               `json:"-"`
-	XXX_unrecognized     []byte                 `json:"-"`
-	XXX_sizecache        int32                  `json:"-"`
-}
-
-func (m *Query_Order) Reset()         { *m = Query_Order{} }
-func (m *Query_Order) String() string { return proto.CompactTextString(m) }
-func (*Query_Order) ProtoMessage()    {}
-func (*Query_Order) Descriptor() ([]byte, []int) {
-	return fileDescriptor_datastore_v3_83b17b80c34f6179, []int{15, 1}
-}
-func (m *Query_Order) XXX_Unmarshal(b []byte) error {
-	return xxx_messageInfo_Query_Order.Unmarshal(m, b)
-}
-func (m *Query_Order) XXX_Marshal(b []byte, deterministic bool) ([]byte, error) {
-	return xxx_messageInfo_Query_Order.Marshal(b, m, deterministic)
-}
-func (dst *Query_Order) XXX_Merge(src proto.Message) {
-	xxx_messageInfo_Query_Order.Merge(dst, src)
-}
-func (m *Query_Order) XXX_Size() int {
-	return xxx_messageInfo_Query_Order.Size(m)
-}
-func (m *Query_Order) XXX_DiscardUnknown() {
-	xxx_messageInfo_Query_Order.DiscardUnknown(m)
-}
-
-var xxx_messageInfo_Query_Order proto.InternalMessageInfo
-
-const Default_Query_Order_Direction Query_Order_Direction = Query_Order_ASCENDING
-
-func (m *Query_Order) GetProperty() string {
-	if m != nil && m.Property != nil {
-		return *m.Property
-	}
-	return ""
-}
-
-func (m *Query_Order) GetDirection() Query_Order_Direction {
-	if m != nil && m.Direction != nil {
-		return *m.Direction
-	}
-	return Default_Query_Order_Direction
-}
-
-type CompiledQuery struct {
-	Primaryscan          *CompiledQuery_PrimaryScan     `protobuf:"group,1,req,name=PrimaryScan,json=primaryscan" json:"primaryscan,omitempty"`
-	Mergejoinscan        []*CompiledQuery_MergeJoinScan `protobuf:"group,7,rep,name=MergeJoinScan,json=mergejoinscan" json:"mergejoinscan,omitempty"`
-	IndexDef             *Index                         `protobuf:"bytes,21,opt,name=index_def,json=indexDef" json:"index_def,omitempty"`
-	Offset               *int32                         `protobuf:"varint,10,opt,name=offset,def=0" json:"offset,omitempty"`
-	Limit                *int32                         `protobuf:"varint,11,opt,name=limit" json:"limit,omitempty"`
-	KeysOnly             *bool                          `protobuf:"varint,12,req,name=keys_only,json=keysOnly" json:"keys_only,omitempty"`
-	PropertyName         []string                       `protobuf:"bytes,24,rep,name=property_name,json=propertyName" json:"property_name,omitempty"`
-	DistinctInfixSize    *int32                         `protobuf:"varint,25,opt,name=distinct_infix_size,json=distinctInfixSize" json:"distinct_infix_size,omitempty"`
-	Entityfilter         *CompiledQuery_EntityFilter    `protobuf:"group,13,opt,name=EntityFilter,json=entityfilter" json:"entityfilter,omitempty"`
-	XXX_NoUnkeyedLiteral struct{}                       `json:"-"`
-	XXX_unrecognized     []byte                         `json:"-"`
-	XXX_sizecache        int32                          `json:"-"`
-}
-
-func (m *CompiledQuery) Reset()         { *m = CompiledQuery{} }
-func (m *CompiledQuery) String() string { return proto.CompactTextString(m) }
-func (*CompiledQuery) ProtoMessage()    {}
-func (*CompiledQuery) Descriptor() ([]byte, []int) {
-	return fileDescriptor_datastore_v3_83b17b80c34f6179, []int{16}
-}
-func (m *CompiledQuery) XXX_Unmarshal(b []byte) error {
-	return xxx_messageInfo_CompiledQuery.Unmarshal(m, b)
-}
-func (m *CompiledQuery) XXX_Marshal(b []byte, deterministic bool) ([]byte, error) {
-	return xxx_messageInfo_CompiledQuery.Marshal(b, m, deterministic)
-}
-func (dst *CompiledQuery) XXX_Merge(src proto.Message) {
-	xxx_messageInfo_CompiledQuery.Merge(dst, src)
-}
-func (m *CompiledQuery) XXX_Size() int {
-	return xxx_messageInfo_CompiledQuery.Size(m)
-}
-func (m *CompiledQuery) XXX_DiscardUnknown() {
-	xxx_messageInfo_CompiledQuery.DiscardUnknown(m)
-}
-
-var xxx_messageInfo_CompiledQuery proto.InternalMessageInfo
-
-const Default_CompiledQuery_Offset int32 = 0
-
-func (m *CompiledQuery) GetPrimaryscan() *CompiledQuery_PrimaryScan {
-	if m != nil {
-		return m.Primaryscan
-	}
-	return nil
-}
-
-func (m *CompiledQuery) GetMergejoinscan() []*CompiledQuery_MergeJoinScan {
-	if m != nil {
-		return m.Mergejoinscan
-	}
-	return nil
-}
-
-func (m *CompiledQuery) GetIndexDef() *Index {
-	if m != nil {
-		return m.IndexDef
-	}
-	return nil
-}
-
-func (m *CompiledQuery) GetOffset() int32 {
-	if m != nil && m.Offset != nil {
-		return *m.Offset
-	}
-	return Default_CompiledQuery_Offset
-}
-
-func (m *CompiledQuery) GetLimit() int32 {
-	if m != nil && m.Limit != nil {
-		return *m.Limit
-	}
-	return 0
-}
-
-func (m *CompiledQuery) GetKeysOnly() bool {
-	if m != nil && m.KeysOnly != nil {
-		return *m.KeysOnly
-	}
-	return false
-}
-
-func (m *CompiledQuery) GetPropertyName() []string {
-	if m != nil {
-		return m.PropertyName
-	}
-	return nil
-}
-
-func (m *CompiledQuery) GetDistinctInfixSize() int32 {
-	if m != nil && m.DistinctInfixSize != nil {
-		return *m.DistinctInfixSize
-	}
-	return 0
-}
-
-func (m *CompiledQuery) GetEntityfilter() *CompiledQuery_EntityFilter {
-	if m != nil {
-		return m.Entityfilter
-	}
-	return nil
-}
-
-type CompiledQuery_PrimaryScan struct {
-	IndexName                  *string  `protobuf:"bytes,2,opt,name=index_name,json=indexName" json:"index_name,omitempty"`
-	StartKey                   *string  `protobuf:"bytes,3,opt,name=start_key,json=startKey" json:"start_key,omitempty"`
-	StartInclusive             *bool    `protobuf:"varint,4,opt,name=start_inclusive,json=startInclusive" json:"start_inclusive,omitempty"`
-	EndKey                     *string  `protobuf:"bytes,5,opt,name=end_key,json=endKey" json:"end_key,omitempty"`
-	EndInclusive               *bool    `protobuf:"varint,6,opt,name=end_inclusive,json=endInclusive" json:"end_inclusive,omitempty"`
-	StartPostfixValue          []string `protobuf:"bytes,22,rep,name=start_postfix_value,json=startPostfixValue" json:"start_postfix_value,omitempty"`
-	EndPostfixValue            []string `protobuf:"bytes,23,rep,name=end_postfix_value,json=endPostfixValue" json:"end_postfix_value,omitempty"`
-	EndUnappliedLogTimestampUs *int64   `protobuf:"varint,19,opt,name=end_unapplied_log_timestamp_us,json=endUnappliedLogTimestampUs" json:"end_unapplied_log_timestamp_us,omitempty"`
-	XXX_NoUnkeyedLiteral       struct{} `json:"-"`
-	XXX_unrecognized           []byte   `json:"-"`
-	XXX_sizecache              int32    `json:"-"`
-}
-
-func (m *CompiledQuery_PrimaryScan) Reset()         { *m = CompiledQuery_PrimaryScan{} }
-func (m *CompiledQuery_PrimaryScan) String() string { return proto.CompactTextString(m) }
-func (*CompiledQuery_PrimaryScan) ProtoMessage()    {}
-func (*CompiledQuery_PrimaryScan) Descriptor() ([]byte, []int) {
-	return fileDescriptor_datastore_v3_83b17b80c34f6179, []int{16, 0}
-}
-func (m *CompiledQuery_PrimaryScan) XXX_Unmarshal(b []byte) error {
-	return xxx_messageInfo_CompiledQuery_PrimaryScan.Unmarshal(m, b)
-}
-func (m *CompiledQuery_PrimaryScan) XXX_Marshal(b []byte, deterministic bool) ([]byte, error) {
-	return xxx_messageInfo_CompiledQuery_PrimaryScan.Marshal(b, m, deterministic)
-}
-func (dst *CompiledQuery_PrimaryScan) XXX_Merge(src proto.Message) {
-	xxx_messageInfo_CompiledQuery_PrimaryScan.Merge(dst, src)
-}
-func (m *CompiledQuery_PrimaryScan) XXX_Size() int {
-	return xxx_messageInfo_CompiledQuery_PrimaryScan.Size(m)
-}
-func (m *CompiledQuery_PrimaryScan) XXX_DiscardUnknown() {
-	xxx_messageInfo_CompiledQuery_PrimaryScan.DiscardUnknown(m)
-}
-
-var xxx_messageInfo_CompiledQuery_PrimaryScan proto.InternalMessageInfo
-
-func (m *CompiledQuery_PrimaryScan) GetIndexName() string {
-	if m != nil && m.IndexName != nil {
-		return *m.IndexName
-	}
-	return ""
-}
-
-func (m *CompiledQuery_PrimaryScan) GetStartKey() string {
-	if m != nil && m.StartKey != nil {
-		return *m.StartKey
-	}
-	return ""
-}
-
-func (m *CompiledQuery_PrimaryScan) GetStartInclusive() bool {
-	if m != nil && m.StartInclusive != nil {
-		return *m.StartInclusive
-	}
-	return false
-}
-
-func (m *CompiledQuery_PrimaryScan) GetEndKey() string {
-	if m != nil && m.EndKey != nil {
-		return *m.EndKey
-	}
-	return ""
-}
-
-func (m *CompiledQuery_PrimaryScan) GetEndInclusive() bool {
-	if m != nil && m.EndInclusive != nil {
-		return *m.EndInclusive
-	}
-	return false
-}
-
-func (m *CompiledQuery_PrimaryScan) GetStartPostfixValue() []string {
-	if m != nil {
-		return m.StartPostfixValue
-	}
-	return nil
-}
-
-func (m *CompiledQuery_PrimaryScan) GetEndPostfixValue() []string {
-	if m != nil {
-		return m.EndPostfixValue
-	}
-	return nil
-}
-
-func (m *CompiledQuery_PrimaryScan) GetEndUnappliedLogTimestampUs() int64 {
-	if m != nil && m.EndUnappliedLogTimestampUs != nil {
-		return *m.EndUnappliedLogTimestampUs
-	}
-	return 0
-}
-
-type CompiledQuery_MergeJoinScan struct {
-	IndexName            *string  `protobuf:"bytes,8,req,name=index_name,json=indexName" json:"index_name,omitempty"`
-	PrefixValue          []string `protobuf:"bytes,9,rep,name=prefix_value,json=prefixValue" json:"prefix_value,omitempty"`
-	ValuePrefix          *bool    `protobuf:"varint,20,opt,name=value_prefix,json=valuePrefix,def=0" json:"value_prefix,omitempty"`
-	XXX_NoUnkeyedLiteral struct{} `json:"-"`
-	XXX_unrecognized     []byte   `json:"-"`
-	XXX_sizecache        int32    `json:"-"`
-}
-
-func (m *CompiledQuery_MergeJoinScan) Reset()         { *m = CompiledQuery_MergeJoinScan{} }
-func (m *CompiledQuery_MergeJoinScan) String() string { return proto.CompactTextString(m) }
-func (*CompiledQuery_MergeJoinScan) ProtoMessage()    {}
-func (*CompiledQuery_MergeJoinScan) Descriptor() ([]byte, []int) {
-	return fileDescriptor_datastore_v3_83b17b80c34f6179, []int{16, 1}
-}
-func (m *CompiledQuery_MergeJoinScan) XXX_Unmarshal(b []byte) error {
-	return xxx_messageInfo_CompiledQuery_MergeJoinScan.Unmarshal(m, b)
-}
-func (m *CompiledQuery_MergeJoinScan) XXX_Marshal(b []byte, deterministic bool) ([]byte, error) {
-	return xxx_messageInfo_CompiledQuery_MergeJoinScan.Marshal(b, m, deterministic)
-}
-func (dst *CompiledQuery_MergeJoinScan) XXX_Merge(src proto.Message) {
-	xxx_messageInfo_CompiledQuery_MergeJoinScan.Merge(dst, src)
-}
-func (m *CompiledQuery_MergeJoinScan) XXX_Size() int {
-	return xxx_messageInfo_CompiledQuery_MergeJoinScan.Size(m)
-}
-func (m *CompiledQuery_MergeJoinScan) XXX_DiscardUnknown() {
-	xxx_messageInfo_CompiledQuery_MergeJoinScan.DiscardUnknown(m)
-}
-
-var xxx_messageInfo_CompiledQuery_MergeJoinScan proto.InternalMessageInfo
-
-const Default_CompiledQuery_MergeJoinScan_ValuePrefix bool = false
-
-func (m *CompiledQuery_MergeJoinScan) GetIndexName() string {
-	if m != nil && m.IndexName != nil {
-		return *m.IndexName
-	}
-	return ""
-}
-
-func (m *CompiledQuery_MergeJoinScan) GetPrefixValue() []string {
-	if m != nil {
-		return m.PrefixValue
-	}
-	return nil
-}
-
-func (m *CompiledQuery_MergeJoinScan) GetValuePrefix() bool {
-	if m != nil && m.ValuePrefix != nil {
-		return *m.ValuePrefix
-	}
-	return Default_CompiledQuery_MergeJoinScan_ValuePrefix
-}
-
-type CompiledQuery_EntityFilter struct {
-	Distinct             *bool      `protobuf:"varint,14,opt,name=distinct,def=0" json:"distinct,omitempty"`
-	Kind                 *string    `protobuf:"bytes,17,opt,name=kind" json:"kind,omitempty"`
-	Ancestor             *Reference `protobuf:"bytes,18,opt,name=ancestor" json:"ancestor,omitempty"`
-	XXX_NoUnkeyedLiteral struct{}   `json:"-"`
-	XXX_unrecognized     []byte     `json:"-"`
-	XXX_sizecache        int32      `json:"-"`
-}
-
-func (m *CompiledQuery_EntityFilter) Reset()         { *m = CompiledQuery_EntityFilter{} }
-func (m *CompiledQuery_EntityFilter) String() string { return proto.CompactTextString(m) }
-func (*CompiledQuery_EntityFilter) ProtoMessage()    {}
-func (*CompiledQuery_EntityFilter) Descriptor() ([]byte, []int) {
-	return fileDescriptor_datastore_v3_83b17b80c34f6179, []int{16, 2}
-}
-func (m *CompiledQuery_EntityFilter) XXX_Unmarshal(b []byte) error {
-	return xxx_messageInfo_CompiledQuery_EntityFilter.Unmarshal(m, b)
-}
-func (m *CompiledQuery_EntityFilter) XXX_Marshal(b []byte, deterministic bool) ([]byte, error) {
-	return xxx_messageInfo_CompiledQuery_EntityFilter.Marshal(b, m, deterministic)
-}
-func (dst *CompiledQuery_EntityFilter) XXX_Merge(src proto.Message) {
-	xxx_messageInfo_CompiledQuery_EntityFilter.Merge(dst, src)
-}
-func (m *CompiledQuery_EntityFilter) XXX_Size() int {
-	return xxx_messageInfo_CompiledQuery_EntityFilter.Size(m)
-}
-func (m *CompiledQuery_EntityFilter) XXX_DiscardUnknown() {
-	xxx_messageInfo_CompiledQuery_EntityFilter.DiscardUnknown(m)
-}
-
-var xxx_messageInfo_CompiledQuery_EntityFilter proto.InternalMessageInfo
-
-const Default_CompiledQuery_EntityFilter_Distinct bool = false
-
-func (m *CompiledQuery_EntityFilter) GetDistinct() bool {
-	if m != nil && m.Distinct != nil {
-		return *m.Distinct
-	}
-	return Default_CompiledQuery_EntityFilter_Distinct
-}
-
-func (m *CompiledQuery_EntityFilter) GetKind() string {
-	if m != nil && m.Kind != nil {
-		return *m.Kind
-	}
-	return ""
-}
-
-func (m *CompiledQuery_EntityFilter) GetAncestor() *Reference {
-	if m != nil {
-		return m.Ancestor
-	}
-	return nil
-}
-
-type CompiledCursor struct {
-	Position             *CompiledCursor_Position `protobuf:"group,2,opt,name=Position,json=position" json:"position,omitempty"`
-	XXX_NoUnkeyedLiteral struct{}                 `json:"-"`
-	XXX_unrecognized     []byte                   `json:"-"`
-	XXX_sizecache        int32                    `json:"-"`
-}
-
-func (m *CompiledCursor) Reset()         { *m = CompiledCursor{} }
-func (m *CompiledCursor) String() string { return proto.CompactTextString(m) }
-func (*CompiledCursor) ProtoMessage()    {}
-func (*CompiledCursor) Descriptor() ([]byte, []int) {
-	return fileDescriptor_datastore_v3_83b17b80c34f6179, []int{17}
-}
-func (m *CompiledCursor) XXX_Unmarshal(b []byte) error {
-	return xxx_messageInfo_CompiledCursor.Unmarshal(m, b)
-}
-func (m *CompiledCursor) XXX_Marshal(b []byte, deterministic bool) ([]byte, error) {
-	return xxx_messageInfo_CompiledCursor.Marshal(b, m, deterministic)
-}
-func (dst *CompiledCursor) XXX_Merge(src proto.Message) {
-	xxx_messageInfo_CompiledCursor.Merge(dst, src)
-}
-func (m *CompiledCursor) XXX_Size() int {
-	return xxx_messageInfo_CompiledCursor.Size(m)
-}
-func (m *CompiledCursor) XXX_DiscardUnknown() {
-	xxx_messageInfo_CompiledCursor.DiscardUnknown(m)
-}
-
-var xxx_messageInfo_CompiledCursor proto.InternalMessageInfo
-
-func (m *CompiledCursor) GetPosition() *CompiledCursor_Position {
-	if m != nil {
-		return m.Position
-	}
-	return nil
-}
-
-type CompiledCursor_Position struct {
-	StartKey             *string                               `protobuf:"bytes,27,opt,name=start_key,json=startKey" json:"start_key,omitempty"`
-	Indexvalue           []*CompiledCursor_Position_IndexValue `protobuf:"group,29,rep,name=IndexValue,json=indexvalue" json:"indexvalue,omitempty"`
-	Key                  *Reference                            `protobuf:"bytes,32,opt,name=key" json:"key,omitempty"`
-	StartInclusive       *bool                                 `protobuf:"varint,28,opt,name=start_inclusive,json=startInclusive,def=1" json:"start_inclusive,omitempty"`
-	XXX_NoUnkeyedLiteral struct{}                              `json:"-"`
-	XXX_unrecognized     []byte                                `json:"-"`
-	XXX_sizecache        int32                                 `json:"-"`
-}
-
-func (m *CompiledCursor_Position) Reset()         { *m = CompiledCursor_Position{} }
-func (m *CompiledCursor_Position) String() string { return proto.CompactTextString(m) }
-func (*CompiledCursor_Position) ProtoMessage()    {}
-func (*CompiledCursor_Position) Descriptor() ([]byte, []int) {
-	return fileDescriptor_datastore_v3_83b17b80c34f6179, []int{17, 0}
-}
-func (m *CompiledCursor_Position) XXX_Unmarshal(b []byte) error {
-	return xxx_messageInfo_CompiledCursor_Position.Unmarshal(m, b)
-}
-func (m *CompiledCursor_Position) XXX_Marshal(b []byte, deterministic bool) ([]byte, error) {
-	return xxx_messageInfo_CompiledCursor_Position.Marshal(b, m, deterministic)
-}
-func (dst *CompiledCursor_Position) XXX_Merge(src proto.Message) {
-	xxx_messageInfo_CompiledCursor_Position.Merge(dst, src)
-}
-func (m *CompiledCursor_Position) XXX_Size() int {
-	return xxx_messageInfo_CompiledCursor_Position.Size(m)
-}
-func (m *CompiledCursor_Position) XXX_DiscardUnknown() {
-	xxx_messageInfo_CompiledCursor_Position.DiscardUnknown(m)
-}
-
-var xxx_messageInfo_CompiledCursor_Position proto.InternalMessageInfo
-
-const Default_CompiledCursor_Position_StartInclusive bool = true
-
-func (m *CompiledCursor_Position) GetStartKey() string {
-	if m != nil && m.StartKey != nil {
-		return *m.StartKey
-	}
-	return ""
-}
-
-func (m *CompiledCursor_Position) GetIndexvalue() []*CompiledCursor_Position_IndexValue {
-	if m != nil {
-		return m.Indexvalue
-	}
-	return nil
-}
-
-func (m *CompiledCursor_Position) GetKey() *Reference {
-	if m != nil {
-		return m.Key
-	}
-	return nil
-}
-
-func (m *CompiledCursor_Position) GetStartInclusive() bool {
-	if m != nil && m.StartInclusive != nil {
-		return *m.StartInclusive
-	}
-	return Default_CompiledCursor_Position_StartInclusive
-}
-
-type CompiledCursor_Position_IndexValue struct {
-	Property             *string        `protobuf:"bytes,30,opt,name=property" json:"property,omitempty"`
-	Value                *PropertyValue `protobuf:"bytes,31,req,name=value" json:"value,omitempty"`
-	XXX_NoUnkeyedLiteral struct{}       `json:"-"`
-	XXX_unrecognized     []byte         `json:"-"`
-	XXX_sizecache        int32          `json:"-"`
-}
-
-func (m *CompiledCursor_Position_IndexValue) Reset()         { *m = CompiledCursor_Position_IndexValue{} }
-func (m *CompiledCursor_Position_IndexValue) String() string { return proto.CompactTextString(m) }
-func (*CompiledCursor_Position_IndexValue) ProtoMessage()    {}
-func (*CompiledCursor_Position_IndexValue) Descriptor() ([]byte, []int) {
-	return fileDescriptor_datastore_v3_83b17b80c34f6179, []int{17, 0, 0}
-}
-func (m *CompiledCursor_Position_IndexValue) XXX_Unmarshal(b []byte) error {
-	return xxx_messageInfo_CompiledCursor_Position_IndexValue.Unmarshal(m, b)
-}
-func (m *CompiledCursor_Position_IndexValue) XXX_Marshal(b []byte, deterministic bool) ([]byte, error) {
-	return xxx_messageInfo_CompiledCursor_Position_IndexValue.Marshal(b, m, deterministic)
-}
-func (dst *CompiledCursor_Position_IndexValue) XXX_Merge(src proto.Message) {
-	xxx_messageInfo_CompiledCursor_Position_IndexValue.Merge(dst, src)
-}
-func (m *CompiledCursor_Position_IndexValue) XXX_Size() int {
-	return xxx_messageInfo_CompiledCursor_Position_IndexValue.Size(m)
-}
-func (m *CompiledCursor_Position_IndexValue) XXX_DiscardUnknown() {
-	xxx_messageInfo_CompiledCursor_Position_IndexValue.DiscardUnknown(m)
-}
-
-var xxx_messageInfo_CompiledCursor_Position_IndexValue proto.InternalMessageInfo
-
-func (m *CompiledCursor_Position_IndexValue) GetProperty() string {
-	if m != nil && m.Property != nil {
-		return *m.Property
-	}
-	return ""
-}
-
-func (m *CompiledCursor_Position_IndexValue) GetValue() *PropertyValue {
-	if m != nil {
-		return m.Value
-	}
-	return nil
-}
-
-type Cursor struct {
-	Cursor               *uint64  `protobuf:"fixed64,1,req,name=cursor" json:"cursor,omitempty"`
-	App                  *string  `protobuf:"bytes,2,opt,name=app" json:"app,omitempty"`
-	XXX_NoUnkeyedLiteral struct{} `json:"-"`
-	XXX_unrecognized     []byte   `json:"-"`
-	XXX_sizecache        int32    `json:"-"`
-}
-
-func (m *Cursor) Reset()         { *m = Cursor{} }
-func (m *Cursor) String() string { return proto.CompactTextString(m) }
-func (*Cursor) ProtoMessage()    {}
-func (*Cursor) Descriptor() ([]byte, []int) {
-	return fileDescriptor_datastore_v3_83b17b80c34f6179, []int{18}
-}
-func (m *Cursor) XXX_Unmarshal(b []byte) error {
-	return xxx_messageInfo_Cursor.Unmarshal(m, b)
-}
-func (m *Cursor) XXX_Marshal(b []byte, deterministic bool) ([]byte, error) {
-	return xxx_messageInfo_Cursor.Marshal(b, m, deterministic)
-}
-func (dst *Cursor) XXX_Merge(src proto.Message) {
-	xxx_messageInfo_Cursor.Merge(dst, src)
-}
-func (m *Cursor) XXX_Size() int {
-	return xxx_messageInfo_Cursor.Size(m)
-}
-func (m *Cursor) XXX_DiscardUnknown() {
-	xxx_messageInfo_Cursor.DiscardUnknown(m)
-}
-
-var xxx_messageInfo_Cursor proto.InternalMessageInfo
-
-func (m *Cursor) GetCursor() uint64 {
-	if m != nil && m.Cursor != nil {
-		return *m.Cursor
-	}
-	return 0
-}
-
-func (m *Cursor) GetApp() string {
-	if m != nil && m.App != nil {
-		return *m.App
-	}
-	return ""
-}
-
-type Error struct {
-	XXX_NoUnkeyedLiteral struct{} `json:"-"`
-	XXX_unrecognized     []byte   `json:"-"`
-	XXX_sizecache        int32    `json:"-"`
-}
-
-func (m *Error) Reset()         { *m = Error{} }
-func (m *Error) String() string { return proto.CompactTextString(m) }
-func (*Error) ProtoMessage()    {}
-func (*Error) Descriptor() ([]byte, []int) {
-	return fileDescriptor_datastore_v3_83b17b80c34f6179, []int{19}
-}
-func (m *Error) XXX_Unmarshal(b []byte) error {
-	return xxx_messageInfo_Error.Unmarshal(m, b)
-}
-func (m *Error) XXX_Marshal(b []byte, deterministic bool) ([]byte, error) {
-	return xxx_messageInfo_Error.Marshal(b, m, deterministic)
-}
-func (dst *Error) XXX_Merge(src proto.Message) {
-	xxx_messageInfo_Error.Merge(dst, src)
-}
-func (m *Error) XXX_Size() int {
-	return xxx_messageInfo_Error.Size(m)
-}
-func (m *Error) XXX_DiscardUnknown() {
-	xxx_messageInfo_Error.DiscardUnknown(m)
-}
-
-var xxx_messageInfo_Error proto.InternalMessageInfo
-
-type Cost struct {
-	IndexWrites             *int32           `protobuf:"varint,1,opt,name=index_writes,json=indexWrites" json:"index_writes,omitempty"`
-	IndexWriteBytes         *int32           `protobuf:"varint,2,opt,name=index_write_bytes,json=indexWriteBytes" json:"index_write_bytes,omitempty"`
-	EntityWrites            *int32           `protobuf:"varint,3,opt,name=entity_writes,json=entityWrites" json:"entity_writes,omitempty"`
-	EntityWriteBytes        *int32           `protobuf:"varint,4,opt,name=entity_write_bytes,json=entityWriteBytes" json:"entity_write_bytes,omitempty"`
-	Commitcost              *Cost_CommitCost `protobuf:"group,5,opt,name=CommitCost,json=commitcost" json:"commitcost,omitempty"`
-	ApproximateStorageDelta *int32           `protobuf:"varint,8,opt,name=approximate_storage_delta,json=approximateStorageDelta" json:"approximate_storage_delta,omitempty"`
-	IdSequenceUpdates       *int32           `protobuf:"varint,9,opt,name=id_sequence_updates,json=idSequenceUpdates" json:"id_sequence_updates,omitempty"`
-	XXX_NoUnkeyedLiteral    struct{}         `json:"-"`
-	XXX_unrecognized        []byte           `json:"-"`
-	XXX_sizecache           int32            `json:"-"`
-}
-
-func (m *Cost) Reset()         { *m = Cost{} }
-func (m *Cost) String() string { return proto.CompactTextString(m) }
-func (*Cost) ProtoMessage()    {}
-func (*Cost) Descriptor() ([]byte, []int) {
-	return fileDescriptor_datastore_v3_83b17b80c34f6179, []int{20}
-}
-func (m *Cost) XXX_Unmarshal(b []byte) error {
-	return xxx_messageInfo_Cost.Unmarshal(m, b)
-}
-func (m *Cost) XXX_Marshal(b []byte, deterministic bool) ([]byte, error) {
-	return xxx_messageInfo_Cost.Marshal(b, m, deterministic)
-}
-func (dst *Cost) XXX_Merge(src proto.Message) {
-	xxx_messageInfo_Cost.Merge(dst, src)
-}
-func (m *Cost) XXX_Size() int {
-	return xxx_messageInfo_Cost.Size(m)
-}
-func (m *Cost) XXX_DiscardUnknown() {
-	xxx_messageInfo_Cost.DiscardUnknown(m)
-}
-
-var xxx_messageInfo_Cost proto.InternalMessageInfo
-
-func (m *Cost) GetIndexWrites() int32 {
-	if m != nil && m.IndexWrites != nil {
-		return *m.IndexWrites
-	}
-	return 0
-}
-
-func (m *Cost) GetIndexWriteBytes() int32 {
-	if m != nil && m.IndexWriteBytes != nil {
-		return *m.IndexWriteBytes
-	}
-	return 0
-}
-
-func (m *Cost) GetEntityWrites() int32 {
-	if m != nil && m.EntityWrites != nil {
-		return *m.EntityWrites
-	}
-	return 0
-}
-
-func (m *Cost) GetEntityWriteBytes() int32 {
-	if m != nil && m.EntityWriteBytes != nil {
-		return *m.EntityWriteBytes
-	}
-	return 0
-}
-
-func (m *Cost) GetCommitcost() *Cost_CommitCost {
-	if m != nil {
-		return m.Commitcost
-	}
-	return nil
-}
-
-func (m *Cost) GetApproximateStorageDelta() int32 {
-	if m != nil && m.ApproximateStorageDelta != nil {
-		return *m.ApproximateStorageDelta
-	}
-	return 0
-}
-
-func (m *Cost) GetIdSequenceUpdates() int32 {
-	if m != nil && m.IdSequenceUpdates != nil {
-		return *m.IdSequenceUpdates
-	}
-	return 0
-}
-
-type Cost_CommitCost struct {
-	RequestedEntityPuts    *int32   `protobuf:"varint,6,opt,name=requested_entity_puts,json=requestedEntityPuts" json:"requested_entity_puts,omitempty"`
-	RequestedEntityDeletes *int32   `protobuf:"varint,7,opt,name=requested_entity_deletes,json=requestedEntityDeletes" json:"requested_entity_deletes,omitempty"`
-	XXX_NoUnkeyedLiteral   struct{} `json:"-"`
-	XXX_unrecognized       []byte   `json:"-"`
-	XXX_sizecache          int32    `json:"-"`
-}
-
-func (m *Cost_CommitCost) Reset()         { *m = Cost_CommitCost{} }
-func (m *Cost_CommitCost) String() string { return proto.CompactTextString(m) }
-func (*Cost_CommitCost) ProtoMessage()    {}
-func (*Cost_CommitCost) Descriptor() ([]byte, []int) {
-	return fileDescriptor_datastore_v3_83b17b80c34f6179, []int{20, 0}
-}
-func (m *Cost_CommitCost) XXX_Unmarshal(b []byte) error {
-	return xxx_messageInfo_Cost_CommitCost.Unmarshal(m, b)
-}
-func (m *Cost_CommitCost) XXX_Marshal(b []byte, deterministic bool) ([]byte, error) {
-	return xxx_messageInfo_Cost_CommitCost.Marshal(b, m, deterministic)
-}
-func (dst *Cost_CommitCost) XXX_Merge(src proto.Message) {
-	xxx_messageInfo_Cost_CommitCost.Merge(dst, src)
-}
-func (m *Cost_CommitCost) XXX_Size() int {
-	return xxx_messageInfo_Cost_CommitCost.Size(m)
-}
-func (m *Cost_CommitCost) XXX_DiscardUnknown() {
-	xxx_messageInfo_Cost_CommitCost.DiscardUnknown(m)
-}
-
-var xxx_messageInfo_Cost_CommitCost proto.InternalMessageInfo
-
-func (m *Cost_CommitCost) GetRequestedEntityPuts() int32 {
-	if m != nil && m.RequestedEntityPuts != nil {
-		return *m.RequestedEntityPuts
-	}
-	return 0
-}
-
-func (m *Cost_CommitCost) GetRequestedEntityDeletes() int32 {
-	if m != nil && m.RequestedEntityDeletes != nil {
-		return *m.RequestedEntityDeletes
-	}
-	return 0
-}
-
-type GetRequest struct {
-	Header               *InternalHeader `protobuf:"bytes,6,opt,name=header" json:"header,omitempty"`
-	Key                  []*Reference    `protobuf:"bytes,1,rep,name=key" json:"key,omitempty"`
-	Transaction          *Transaction    `protobuf:"bytes,2,opt,name=transaction" json:"transaction,omitempty"`
-	FailoverMs           *int64          `protobuf:"varint,3,opt,name=failover_ms,json=failoverMs" json:"failover_ms,omitempty"`
-	Strong               *bool           `protobuf:"varint,4,opt,name=strong" json:"strong,omitempty"`
-	AllowDeferred        *bool           `protobuf:"varint,5,opt,name=allow_deferred,json=allowDeferred,def=0" json:"allow_deferred,omitempty"`
-	XXX_NoUnkeyedLiteral struct{}        `json:"-"`
-	XXX_unrecognized     []byte          `json:"-"`
-	XXX_sizecache        int32           `json:"-"`
-}
-
-func (m *GetRequest) Reset()         { *m = GetRequest{} }
-func (m *GetRequest) String() string { return proto.CompactTextString(m) }
-func (*GetRequest) ProtoMessage()    {}
-func (*GetRequest) Descriptor() ([]byte, []int) {
-	return fileDescriptor_datastore_v3_83b17b80c34f6179, []int{21}
-}
-func (m *GetRequest) XXX_Unmarshal(b []byte) error {
-	return xxx_messageInfo_GetRequest.Unmarshal(m, b)
-}
-func (m *GetRequest) XXX_Marshal(b []byte, deterministic bool) ([]byte, error) {
-	return xxx_messageInfo_GetRequest.Marshal(b, m, deterministic)
-}
-func (dst *GetRequest) XXX_Merge(src proto.Message) {
-	xxx_messageInfo_GetRequest.Merge(dst, src)
-}
-func (m *GetRequest) XXX_Size() int {
-	return xxx_messageInfo_GetRequest.Size(m)
-}
-func (m *GetRequest) XXX_DiscardUnknown() {
-	xxx_messageInfo_GetRequest.DiscardUnknown(m)
-}
-
-var xxx_messageInfo_GetRequest proto.InternalMessageInfo
-
-const Default_GetRequest_AllowDeferred bool = false
-
-func (m *GetRequest) GetHeader() *InternalHeader {
-	if m != nil {
-		return m.Header
-	}
-	return nil
-}
-
-func (m *GetRequest) GetKey() []*Reference {
-	if m != nil {
-		return m.Key
-	}
-	return nil
-}
-
-func (m *GetRequest) GetTransaction() *Transaction {
-	if m != nil {
-		return m.Transaction
-	}
-	return nil
-}
-
-func (m *GetRequest) GetFailoverMs() int64 {
-	if m != nil && m.FailoverMs != nil {
-		return *m.FailoverMs
-	}
-	return 0
-}
-
-func (m *GetRequest) GetStrong() bool {
-	if m != nil && m.Strong != nil {
-		return *m.Strong
-	}
-	return false
-}
-
-func (m *GetRequest) GetAllowDeferred() bool {
-	if m != nil && m.AllowDeferred != nil {
-		return *m.AllowDeferred
-	}
-	return Default_GetRequest_AllowDeferred
-}
-
-type GetResponse struct {
-	Entity               []*GetResponse_Entity `protobuf:"group,1,rep,name=Entity,json=entity" json:"entity,omitempty"`
-	Deferred             []*Reference          `protobuf:"bytes,5,rep,name=deferred" json:"deferred,omitempty"`
-	InOrder              *bool                 `protobuf:"varint,6,opt,name=in_order,json=inOrder,def=1" json:"in_order,omitempty"`
-	XXX_NoUnkeyedLiteral struct{}              `json:"-"`
-	XXX_unrecognized     []byte                `json:"-"`
-	XXX_sizecache        int32                 `json:"-"`
-}
-
-func (m *GetResponse) Reset()         { *m = GetResponse{} }
-func (m *GetResponse) String() string { return proto.CompactTextString(m) }
-func (*GetResponse) ProtoMessage()    {}
-func (*GetResponse) Descriptor() ([]byte, []int) {
-	return fileDescriptor_datastore_v3_83b17b80c34f6179, []int{22}
-}
-func (m *GetResponse) XXX_Unmarshal(b []byte) error {
-	return xxx_messageInfo_GetResponse.Unmarshal(m, b)
-}
-func (m *GetResponse) XXX_Marshal(b []byte, deterministic bool) ([]byte, error) {
-	return xxx_messageInfo_GetResponse.Marshal(b, m, deterministic)
-}
-func (dst *GetResponse) XXX_Merge(src proto.Message) {
-	xxx_messageInfo_GetResponse.Merge(dst, src)
-}
-func (m *GetResponse) XXX_Size() int {
-	return xxx_messageInfo_GetResponse.Size(m)
-}
-func (m *GetResponse) XXX_DiscardUnknown() {
-	xxx_messageInfo_GetResponse.DiscardUnknown(m)
-}
-
-var xxx_messageInfo_GetResponse proto.InternalMessageInfo
-
-const Default_GetResponse_InOrder bool = true
-
-func (m *GetResponse) GetEntity() []*GetResponse_Entity {
-	if m != nil {
-		return m.Entity
-	}
-	return nil
-}
-
-func (m *GetResponse) GetDeferred() []*Reference {
-	if m != nil {
-		return m.Deferred
-	}
-	return nil
-}
-
-func (m *GetResponse) GetInOrder() bool {
-	if m != nil && m.InOrder != nil {
-		return *m.InOrder
-	}
-	return Default_GetResponse_InOrder
-}
-
-type GetResponse_Entity struct {
-	Entity               *EntityProto `protobuf:"bytes,2,opt,name=entity" json:"entity,omitempty"`
-	Key                  *Reference   `protobuf:"bytes,4,opt,name=key" json:"key,omitempty"`
-	Version              *int64       `protobuf:"varint,3,opt,name=version" json:"version,omitempty"`
-	XXX_NoUnkeyedLiteral struct{}     `json:"-"`
-	XXX_unrecognized     []byte       `json:"-"`
-	XXX_sizecache        int32        `json:"-"`
-}
-
-func (m *GetResponse_Entity) Reset()         { *m = GetResponse_Entity{} }
-func (m *GetResponse_Entity) String() string { return proto.CompactTextString(m) }
-func (*GetResponse_Entity) ProtoMessage()    {}
-func (*GetResponse_Entity) Descriptor() ([]byte, []int) {
-	return fileDescriptor_datastore_v3_83b17b80c34f6179, []int{22, 0}
-}
-func (m *GetResponse_Entity) XXX_Unmarshal(b []byte) error {
-	return xxx_messageInfo_GetResponse_Entity.Unmarshal(m, b)
-}
-func (m *GetResponse_Entity) XXX_Marshal(b []byte, deterministic bool) ([]byte, error) {
-	return xxx_messageInfo_GetResponse_Entity.Marshal(b, m, deterministic)
-}
-func (dst *GetResponse_Entity) XXX_Merge(src proto.Message) {
-	xxx_messageInfo_GetResponse_Entity.Merge(dst, src)
-}
-func (m *GetResponse_Entity) XXX_Size() int {
-	return xxx_messageInfo_GetResponse_Entity.Size(m)
-}
-func (m *GetResponse_Entity) XXX_DiscardUnknown() {
-	xxx_messageInfo_GetResponse_Entity.DiscardUnknown(m)
-}
-
-var xxx_messageInfo_GetResponse_Entity proto.InternalMessageInfo
-
-func (m *GetResponse_Entity) GetEntity() *EntityProto {
-	if m != nil {
-		return m.Entity
-	}
-	return nil
-}
-
-func (m *GetResponse_Entity) GetKey() *Reference {
-	if m != nil {
-		return m.Key
-	}
-	return nil
-}
-
-func (m *GetResponse_Entity) GetVersion() int64 {
-	if m != nil && m.Version != nil {
-		return *m.Version
-	}
-	return 0
-}
-
-type PutRequest struct {
-	Header               *InternalHeader          `protobuf:"bytes,11,opt,name=header" json:"header,omitempty"`
-	Entity               []*EntityProto           `protobuf:"bytes,1,rep,name=entity" json:"entity,omitempty"`
-	Transaction          *Transaction             `protobuf:"bytes,2,opt,name=transaction" json:"transaction,omitempty"`
-	CompositeIndex       []*CompositeIndex        `protobuf:"bytes,3,rep,name=composite_index,json=compositeIndex" json:"composite_index,omitempty"`
-	Trusted              *bool                    `protobuf:"varint,4,opt,name=trusted,def=0" json:"trusted,omitempty"`
-	Force                *bool                    `protobuf:"varint,7,opt,name=force,def=0" json:"force,omitempty"`
-	MarkChanges          *bool                    `protobuf:"varint,8,opt,name=mark_changes,json=markChanges,def=0" json:"mark_changes,omitempty"`
-	Snapshot             []*Snapshot              `protobuf:"bytes,9,rep,name=snapshot" json:"snapshot,omitempty"`
-	AutoIdPolicy         *PutRequest_AutoIdPolicy `protobuf:"varint,10,opt,name=auto_id_policy,json=autoIdPolicy,enum=appengine.PutRequest_AutoIdPolicy,def=0" json:"auto_id_policy,omitempty"`
-	XXX_NoUnkeyedLiteral struct{}                 `json:"-"`
-	XXX_unrecognized     []byte                   `json:"-"`
-	XXX_sizecache        int32                    `json:"-"`
-}
-
-func (m *PutRequest) Reset()         { *m = PutRequest{} }
-func (m *PutRequest) String() string { return proto.CompactTextString(m) }
-func (*PutRequest) ProtoMessage()    {}
-func (*PutRequest) Descriptor() ([]byte, []int) {
-	return fileDescriptor_datastore_v3_83b17b80c34f6179, []int{23}
-}
-func (m *PutRequest) XXX_Unmarshal(b []byte) error {
-	return xxx_messageInfo_PutRequest.Unmarshal(m, b)
-}
-func (m *PutRequest) XXX_Marshal(b []byte, deterministic bool) ([]byte, error) {
-	return xxx_messageInfo_PutRequest.Marshal(b, m, deterministic)
-}
-func (dst *PutRequest) XXX_Merge(src proto.Message) {
-	xxx_messageInfo_PutRequest.Merge(dst, src)
-}
-func (m *PutRequest) XXX_Size() int {
-	return xxx_messageInfo_PutRequest.Size(m)
-}
-func (m *PutRequest) XXX_DiscardUnknown() {
-	xxx_messageInfo_PutRequest.DiscardUnknown(m)
-}
-
-var xxx_messageInfo_PutRequest proto.InternalMessageInfo
-
-const Default_PutRequest_Trusted bool = false
-const Default_PutRequest_Force bool = false
-const Default_PutRequest_MarkChanges bool = false
-const Default_PutRequest_AutoIdPolicy PutRequest_AutoIdPolicy = PutRequest_CURRENT
-
-func (m *PutRequest) GetHeader() *InternalHeader {
-	if m != nil {
-		return m.Header
-	}
-	return nil
-}
-
-func (m *PutRequest) GetEntity() []*EntityProto {
-	if m != nil {
-		return m.Entity
-	}
-	return nil
-}
-
-func (m *PutRequest) GetTransaction() *Transaction {
-	if m != nil {
-		return m.Transaction
-	}
-	return nil
-}
-
-func (m *PutRequest) GetCompositeIndex() []*CompositeIndex {
-	if m != nil {
-		return m.CompositeIndex
-	}
-	return nil
-}
-
-func (m *PutRequest) GetTrusted() bool {
-	if m != nil && m.Trusted != nil {
-		return *m.Trusted
-	}
-	return Default_PutRequest_Trusted
-}
-
-func (m *PutRequest) GetForce() bool {
-	if m != nil && m.Force != nil {
-		return *m.Force
-	}
-	return Default_PutRequest_Force
-}
-
-func (m *PutRequest) GetMarkChanges() bool {
-	if m != nil && m.MarkChanges != nil {
-		return *m.MarkChanges
-	}
-	return Default_PutRequest_MarkChanges
-}
-
-func (m *PutRequest) GetSnapshot() []*Snapshot {
-	if m != nil {
-		return m.Snapshot
-	}
-	return nil
-}
-
-func (m *PutRequest) GetAutoIdPolicy() PutRequest_AutoIdPolicy {
-	if m != nil && m.AutoIdPolicy != nil {
-		return *m.AutoIdPolicy
-	}
-	return Default_PutRequest_AutoIdPolicy
-}
-
-type PutResponse struct {
-	Key                  []*Reference `protobuf:"bytes,1,rep,name=key" json:"key,omitempty"`
-	Cost                 *Cost        `protobuf:"bytes,2,opt,name=cost" json:"cost,omitempty"`
-	Version              []int64      `protobuf:"varint,3,rep,name=version" json:"version,omitempty"`
-	XXX_NoUnkeyedLiteral struct{}     `json:"-"`
-	XXX_unrecognized     []byte       `json:"-"`
-	XXX_sizecache        int32        `json:"-"`
-}
-
-func (m *PutResponse) Reset()         { *m = PutResponse{} }
-func (m *PutResponse) String() string { return proto.CompactTextString(m) }
-func (*PutResponse) ProtoMessage()    {}
-func (*PutResponse) Descriptor() ([]byte, []int) {
-	return fileDescriptor_datastore_v3_83b17b80c34f6179, []int{24}
-}
-func (m *PutResponse) XXX_Unmarshal(b []byte) error {
-	return xxx_messageInfo_PutResponse.Unmarshal(m, b)
-}
-func (m *PutResponse) XXX_Marshal(b []byte, deterministic bool) ([]byte, error) {
-	return xxx_messageInfo_PutResponse.Marshal(b, m, deterministic)
-}
-func (dst *PutResponse) XXX_Merge(src proto.Message) {
-	xxx_messageInfo_PutResponse.Merge(dst, src)
-}
-func (m *PutResponse) XXX_Size() int {
-	return xxx_messageInfo_PutResponse.Size(m)
-}
-func (m *PutResponse) XXX_DiscardUnknown() {
-	xxx_messageInfo_PutResponse.DiscardUnknown(m)
-}
-
-var xxx_messageInfo_PutResponse proto.InternalMessageInfo
-
-func (m *PutResponse) GetKey() []*Reference {
-	if m != nil {
-		return m.Key
-	}
-	return nil
-}
-
-func (m *PutResponse) GetCost() *Cost {
-	if m != nil {
-		return m.Cost
-	}
-	return nil
-}
-
-func (m *PutResponse) GetVersion() []int64 {
-	if m != nil {
-		return m.Version
-	}
-	return nil
-}
-
-type TouchRequest struct {
-	Header               *InternalHeader   `protobuf:"bytes,10,opt,name=header" json:"header,omitempty"`
-	Key                  []*Reference      `protobuf:"bytes,1,rep,name=key" json:"key,omitempty"`
-	CompositeIndex       []*CompositeIndex `protobuf:"bytes,2,rep,name=composite_index,json=compositeIndex" json:"composite_index,omitempty"`
-	Force                *bool             `protobuf:"varint,3,opt,name=force,def=0" json:"force,omitempty"`
-	Snapshot             []*Snapshot       `protobuf:"bytes,9,rep,name=snapshot" json:"snapshot,omitempty"`
-	XXX_NoUnkeyedLiteral struct{}          `json:"-"`
-	XXX_unrecognized     []byte            `json:"-"`
-	XXX_sizecache        int32             `json:"-"`
-}
-
-func (m *TouchRequest) Reset()         { *m = TouchRequest{} }
-func (m *TouchRequest) String() string { return proto.CompactTextString(m) }
-func (*TouchRequest) ProtoMessage()    {}
-func (*TouchRequest) Descriptor() ([]byte, []int) {
-	return fileDescriptor_datastore_v3_83b17b80c34f6179, []int{25}
-}
-func (m *TouchRequest) XXX_Unmarshal(b []byte) error {
-	return xxx_messageInfo_TouchRequest.Unmarshal(m, b)
-}
-func (m *TouchRequest) XXX_Marshal(b []byte, deterministic bool) ([]byte, error) {
-	return xxx_messageInfo_TouchRequest.Marshal(b, m, deterministic)
-}
-func (dst *TouchRequest) XXX_Merge(src proto.Message) {
-	xxx_messageInfo_TouchRequest.Merge(dst, src)
-}
-func (m *TouchRequest) XXX_Size() int {
-	return xxx_messageInfo_TouchRequest.Size(m)
-}
-func (m *TouchRequest) XXX_DiscardUnknown() {
-	xxx_messageInfo_TouchRequest.DiscardUnknown(m)
-}
-
-var xxx_messageInfo_TouchRequest proto.InternalMessageInfo
-
-const Default_TouchRequest_Force bool = false
-
-func (m *TouchRequest) GetHeader() *InternalHeader {
-	if m != nil {
-		return m.Header
-	}
-	return nil
-}
-
-func (m *TouchRequest) GetKey() []*Reference {
-	if m != nil {
-		return m.Key
-	}
-	return nil
-}
-
-func (m *TouchRequest) GetCompositeIndex() []*CompositeIndex {
-	if m != nil {
-		return m.CompositeIndex
-	}
-	return nil
-}
-
-func (m *TouchRequest) GetForce() bool {
-	if m != nil && m.Force != nil {
-		return *m.Force
-	}
-	return Default_TouchRequest_Force
-}
-
-func (m *TouchRequest) GetSnapshot() []*Snapshot {
-	if m != nil {
-		return m.Snapshot
-	}
-	return nil
-}
-
-type TouchResponse struct {
-	Cost                 *Cost    `protobuf:"bytes,1,opt,name=cost" json:"cost,omitempty"`
-	XXX_NoUnkeyedLiteral struct{} `json:"-"`
-	XXX_unrecognized     []byte   `json:"-"`
-	XXX_sizecache        int32    `json:"-"`
-}
-
-func (m *TouchResponse) Reset()         { *m = TouchResponse{} }
-func (m *TouchResponse) String() string { return proto.CompactTextString(m) }
-func (*TouchResponse) ProtoMessage()    {}
-func (*TouchResponse) Descriptor() ([]byte, []int) {
-	return fileDescriptor_datastore_v3_83b17b80c34f6179, []int{26}
-}
-func (m *TouchResponse) XXX_Unmarshal(b []byte) error {
-	return xxx_messageInfo_TouchResponse.Unmarshal(m, b)
-}
-func (m *TouchResponse) XXX_Marshal(b []byte, deterministic bool) ([]byte, error) {
-	return xxx_messageInfo_TouchResponse.Marshal(b, m, deterministic)
-}
-func (dst *TouchResponse) XXX_Merge(src proto.Message) {
-	xxx_messageInfo_TouchResponse.Merge(dst, src)
-}
-func (m *TouchResponse) XXX_Size() int {
-	return xxx_messageInfo_TouchResponse.Size(m)
-}
-func (m *TouchResponse) XXX_DiscardUnknown() {
-	xxx_messageInfo_TouchResponse.DiscardUnknown(m)
-}
-
-var xxx_messageInfo_TouchResponse proto.InternalMessageInfo
-
-func (m *TouchResponse) GetCost() *Cost {
-	if m != nil {
-		return m.Cost
-	}
-	return nil
-}
-
-type DeleteRequest struct {
-	Header               *InternalHeader `protobuf:"bytes,10,opt,name=header" json:"header,omitempty"`
-	Key                  []*Reference    `protobuf:"bytes,6,rep,name=key" json:"key,omitempty"`
-	Transaction          *Transaction    `protobuf:"bytes,5,opt,name=transaction" json:"transaction,omitempty"`
-	Trusted              *bool           `protobuf:"varint,4,opt,name=trusted,def=0" json:"trusted,omitempty"`
-	Force                *bool           `protobuf:"varint,7,opt,name=force,def=0" json:"force,omitempty"`
-	MarkChanges          *bool           `protobuf:"varint,8,opt,name=mark_changes,json=markChanges,def=0" json:"mark_changes,omitempty"`
-	Snapshot             []*Snapshot     `protobuf:"bytes,9,rep,name=snapshot" json:"snapshot,omitempty"`
-	XXX_NoUnkeyedLiteral struct{}        `json:"-"`
-	XXX_unrecognized     []byte          `json:"-"`
-	XXX_sizecache        int32           `json:"-"`
-}
-
-func (m *DeleteRequest) Reset()         { *m = DeleteRequest{} }
-func (m *DeleteRequest) String() string { return proto.CompactTextString(m) }
-func (*DeleteRequest) ProtoMessage()    {}
-func (*DeleteRequest) Descriptor() ([]byte, []int) {
-	return fileDescriptor_datastore_v3_83b17b80c34f6179, []int{27}
-}
-func (m *DeleteRequest) XXX_Unmarshal(b []byte) error {
-	return xxx_messageInfo_DeleteRequest.Unmarshal(m, b)
-}
-func (m *DeleteRequest) XXX_Marshal(b []byte, deterministic bool) ([]byte, error) {
-	return xxx_messageInfo_DeleteRequest.Marshal(b, m, deterministic)
-}
-func (dst *DeleteRequest) XXX_Merge(src proto.Message) {
-	xxx_messageInfo_DeleteRequest.Merge(dst, src)
-}
-func (m *DeleteRequest) XXX_Size() int {
-	return xxx_messageInfo_DeleteRequest.Size(m)
-}
-func (m *DeleteRequest) XXX_DiscardUnknown() {
-	xxx_messageInfo_DeleteRequest.DiscardUnknown(m)
-}
-
-var xxx_messageInfo_DeleteRequest proto.InternalMessageInfo
-
-const Default_DeleteRequest_Trusted bool = false
-const Default_DeleteRequest_Force bool = false
-const Default_DeleteRequest_MarkChanges bool = false
-
-func (m *DeleteRequest) GetHeader() *InternalHeader {
-	if m != nil {
-		return m.Header
-	}
-	return nil
-}
-
-func (m *DeleteRequest) GetKey() []*Reference {
-	if m != nil {
-		return m.Key
-	}
-	return nil
-}
-
-func (m *DeleteRequest) GetTransaction() *Transaction {
-	if m != nil {
-		return m.Transaction
-	}
-	return nil
-}
-
-func (m *DeleteRequest) GetTrusted() bool {
-	if m != nil && m.Trusted != nil {
-		return *m.Trusted
-	}
-	return Default_DeleteRequest_Trusted
-}
-
-func (m *DeleteRequest) GetForce() bool {
-	if m != nil && m.Force != nil {
-		return *m.Force
-	}
-	return Default_DeleteRequest_Force
-}
-
-func (m *DeleteRequest) GetMarkChanges() bool {
-	if m != nil && m.MarkChanges != nil {
-		return *m.MarkChanges
-	}
-	return Default_DeleteRequest_MarkChanges
-}
-
-func (m *DeleteRequest) GetSnapshot() []*Snapshot {
-	if m != nil {
-		return m.Snapshot
-	}
-	return nil
-}
-
-type DeleteResponse struct {
-	Cost                 *Cost    `protobuf:"bytes,1,opt,name=cost" json:"cost,omitempty"`
-	Version              []int64  `protobuf:"varint,3,rep,name=version" json:"version,omitempty"`
-	XXX_NoUnkeyedLiteral struct{} `json:"-"`
-	XXX_unrecognized     []byte   `json:"-"`
-	XXX_sizecache        int32    `json:"-"`
-}
-
-func (m *DeleteResponse) Reset()         { *m = DeleteResponse{} }
-func (m *DeleteResponse) String() string { return proto.CompactTextString(m) }
-func (*DeleteResponse) ProtoMessage()    {}
-func (*DeleteResponse) Descriptor() ([]byte, []int) {
-	return fileDescriptor_datastore_v3_83b17b80c34f6179, []int{28}
-}
-func (m *DeleteResponse) XXX_Unmarshal(b []byte) error {
-	return xxx_messageInfo_DeleteResponse.Unmarshal(m, b)
-}
-func (m *DeleteResponse) XXX_Marshal(b []byte, deterministic bool) ([]byte, error) {
-	return xxx_messageInfo_DeleteResponse.Marshal(b, m, deterministic)
-}
-func (dst *DeleteResponse) XXX_Merge(src proto.Message) {
-	xxx_messageInfo_DeleteResponse.Merge(dst, src)
-}
-func (m *DeleteResponse) XXX_Size() int {
-	return xxx_messageInfo_DeleteResponse.Size(m)
-}
-func (m *DeleteResponse) XXX_DiscardUnknown() {
-	xxx_messageInfo_DeleteResponse.DiscardUnknown(m)
-}
-
-var xxx_messageInfo_DeleteResponse proto.InternalMessageInfo
-
-func (m *DeleteResponse) GetCost() *Cost {
-	if m != nil {
-		return m.Cost
-	}
-	return nil
-}
-
-func (m *DeleteResponse) GetVersion() []int64 {
-	if m != nil {
-		return m.Version
-	}
-	return nil
-}
-
-type NextRequest struct {
-	Header               *InternalHeader `protobuf:"bytes,5,opt,name=header" json:"header,omitempty"`
-	Cursor               *Cursor         `protobuf:"bytes,1,req,name=cursor" json:"cursor,omitempty"`
-	Count                *int32          `protobuf:"varint,2,opt,name=count" json:"count,omitempty"`
-	Offset               *int32          `protobuf:"varint,4,opt,name=offset,def=0" json:"offset,omitempty"`
-	Compile              *bool           `protobuf:"varint,3,opt,name=compile,def=0" json:"compile,omitempty"`
-	XXX_NoUnkeyedLiteral struct{}        `json:"-"`
-	XXX_unrecognized     []byte          `json:"-"`
-	XXX_sizecache        int32           `json:"-"`
-}
-
-func (m *NextRequest) Reset()         { *m = NextRequest{} }
-func (m *NextRequest) String() string { return proto.CompactTextString(m) }
-func (*NextRequest) ProtoMessage()    {}
-func (*NextRequest) Descriptor() ([]byte, []int) {
-	return fileDescriptor_datastore_v3_83b17b80c34f6179, []int{29}
-}
-func (m *NextRequest) XXX_Unmarshal(b []byte) error {
-	return xxx_messageInfo_NextRequest.Unmarshal(m, b)
-}
-func (m *NextRequest) XXX_Marshal(b []byte, deterministic bool) ([]byte, error) {
-	return xxx_messageInfo_NextRequest.Marshal(b, m, deterministic)
-}
-func (dst *NextRequest) XXX_Merge(src proto.Message) {
-	xxx_messageInfo_NextRequest.Merge(dst, src)
-}
-func (m *NextRequest) XXX_Size() int {
-	return xxx_messageInfo_NextRequest.Size(m)
-}
-func (m *NextRequest) XXX_DiscardUnknown() {
-	xxx_messageInfo_NextRequest.DiscardUnknown(m)
-}
-
-var xxx_messageInfo_NextRequest proto.InternalMessageInfo
-
-const Default_NextRequest_Offset int32 = 0
-const Default_NextRequest_Compile bool = false
-
-func (m *NextRequest) GetHeader() *InternalHeader {
-	if m != nil {
-		return m.Header
-	}
-	return nil
-}
-
-func (m *NextRequest) GetCursor() *Cursor {
-	if m != nil {
-		return m.Cursor
-	}
-	return nil
-}
-
-func (m *NextRequest) GetCount() int32 {
-	if m != nil && m.Count != nil {
-		return *m.Count
-	}
-	return 0
-}
-
-func (m *NextRequest) GetOffset() int32 {
-	if m != nil && m.Offset != nil {
-		return *m.Offset
-	}
-	return Default_NextRequest_Offset
-}
-
-func (m *NextRequest) GetCompile() bool {
-	if m != nil && m.Compile != nil {
-		return *m.Compile
-	}
-	return Default_NextRequest_Compile
-}
-
-type QueryResult struct {
-	Cursor               *Cursor           `protobuf:"bytes,1,opt,name=cursor" json:"cursor,omitempty"`
-	Result               []*EntityProto    `protobuf:"bytes,2,rep,name=result" json:"result,omitempty"`
-	SkippedResults       *int32            `protobuf:"varint,7,opt,name=skipped_results,json=skippedResults" json:"skipped_results,omitempty"`
-	MoreResults          *bool             `protobuf:"varint,3,req,name=more_results,json=moreResults" json:"more_results,omitempty"`
-	KeysOnly             *bool             `protobuf:"varint,4,opt,name=keys_only,json=keysOnly" json:"keys_only,omitempty"`
-	IndexOnly            *bool             `protobuf:"varint,9,opt,name=index_only,json=indexOnly" json:"index_only,omitempty"`
-	SmallOps             *bool             `protobuf:"varint,10,opt,name=small_ops,json=smallOps" json:"small_ops,omitempty"`
-	CompiledQuery        *CompiledQuery    `protobuf:"bytes,5,opt,name=compiled_query,json=compiledQuery" json:"compiled_query,omitempty"`
-	CompiledCursor       *CompiledCursor   `protobuf:"bytes,6,opt,name=compiled_cursor,json=compiledCursor" json:"compiled_cursor,omitempty"`
-	Index                []*CompositeIndex `protobuf:"bytes,8,rep,name=index" json:"index,omitempty"`
-	Version              []int64           `protobuf:"varint,11,rep,name=version" json:"version,omitempty"`
-	XXX_NoUnkeyedLiteral struct{}          `json:"-"`
-	XXX_unrecognized     []byte            `json:"-"`
-	XXX_sizecache        int32             `json:"-"`
-}
-
-func (m *QueryResult) Reset()         { *m = QueryResult{} }
-func (m *QueryResult) String() string { return proto.CompactTextString(m) }
-func (*QueryResult) ProtoMessage()    {}
-func (*QueryResult) Descriptor() ([]byte, []int) {
-	return fileDescriptor_datastore_v3_83b17b80c34f6179, []int{30}
-}
-func (m *QueryResult) XXX_Unmarshal(b []byte) error {
-	return xxx_messageInfo_QueryResult.Unmarshal(m, b)
-}
-func (m *QueryResult) XXX_Marshal(b []byte, deterministic bool) ([]byte, error) {
-	return xxx_messageInfo_QueryResult.Marshal(b, m, deterministic)
-}
-func (dst *QueryResult) XXX_Merge(src proto.Message) {
-	xxx_messageInfo_QueryResult.Merge(dst, src)
-}
-func (m *QueryResult) XXX_Size() int {
-	return xxx_messageInfo_QueryResult.Size(m)
-}
-func (m *QueryResult) XXX_DiscardUnknown() {
-	xxx_messageInfo_QueryResult.DiscardUnknown(m)
-}
-
-var xxx_messageInfo_QueryResult proto.InternalMessageInfo
-
-func (m *QueryResult) GetCursor() *Cursor {
-	if m != nil {
-		return m.Cursor
-	}
-	return nil
-}
-
-func (m *QueryResult) GetResult() []*EntityProto {
-	if m != nil {
-		return m.Result
-	}
-	return nil
-}
-
-func (m *QueryResult) GetSkippedResults() int32 {
-	if m != nil && m.SkippedResults != nil {
-		return *m.SkippedResults
-	}
-	return 0
-}
-
-func (m *QueryResult) GetMoreResults() bool {
-	if m != nil && m.MoreResults != nil {
-		return *m.MoreResults
-	}
-	return false
-}
-
-func (m *QueryResult) GetKeysOnly() bool {
-	if m != nil && m.KeysOnly != nil {
-		return *m.KeysOnly
-	}
-	return false
-}
-
-func (m *QueryResult) GetIndexOnly() bool {
-	if m != nil && m.IndexOnly != nil {
-		return *m.IndexOnly
-	}
-	return false
-}
-
-func (m *QueryResult) GetSmallOps() bool {
-	if m != nil && m.SmallOps != nil {
-		return *m.SmallOps
-	}
-	return false
-}
-
-func (m *QueryResult) GetCompiledQuery() *CompiledQuery {
-	if m != nil {
-		return m.CompiledQuery
-	}
-	return nil
-}
-
-func (m *QueryResult) GetCompiledCursor() *CompiledCursor {
-	if m != nil {
-		return m.CompiledCursor
-	}
-	return nil
-}
-
-func (m *QueryResult) GetIndex() []*CompositeIndex {
-	if m != nil {
-		return m.Index
-	}
-	return nil
-}
-
-func (m *QueryResult) GetVersion() []int64 {
-	if m != nil {
-		return m.Version
-	}
-	return nil
-}
-
-type AllocateIdsRequest struct {
-	Header               *InternalHeader `protobuf:"bytes,4,opt,name=header" json:"header,omitempty"`
-	ModelKey             *Reference      `protobuf:"bytes,1,opt,name=model_key,json=modelKey" json:"model_key,omitempty"`
-	Size                 *int64          `protobuf:"varint,2,opt,name=size" json:"size,omitempty"`
-	Max                  *int64          `protobuf:"varint,3,opt,name=max" json:"max,omitempty"`
-	Reserve              []*Reference    `protobuf:"bytes,5,rep,name=reserve" json:"reserve,omitempty"`
-	XXX_NoUnkeyedLiteral struct{}        `json:"-"`
-	XXX_unrecognized     []byte          `json:"-"`
-	XXX_sizecache        int32           `json:"-"`
-}
-
-func (m *AllocateIdsRequest) Reset()         { *m = AllocateIdsRequest{} }
-func (m *AllocateIdsRequest) String() string { return proto.CompactTextString(m) }
-func (*AllocateIdsRequest) ProtoMessage()    {}
-func (*AllocateIdsRequest) Descriptor() ([]byte, []int) {
-	return fileDescriptor_datastore_v3_83b17b80c34f6179, []int{31}
-}
-func (m *AllocateIdsRequest) XXX_Unmarshal(b []byte) error {
-	return xxx_messageInfo_AllocateIdsRequest.Unmarshal(m, b)
-}
-func (m *AllocateIdsRequest) XXX_Marshal(b []byte, deterministic bool) ([]byte, error) {
-	return xxx_messageInfo_AllocateIdsRequest.Marshal(b, m, deterministic)
-}
-func (dst *AllocateIdsRequest) XXX_Merge(src proto.Message) {
-	xxx_messageInfo_AllocateIdsRequest.Merge(dst, src)
-}
-func (m *AllocateIdsRequest) XXX_Size() int {
-	return xxx_messageInfo_AllocateIdsRequest.Size(m)
-}
-func (m *AllocateIdsRequest) XXX_DiscardUnknown() {
-	xxx_messageInfo_AllocateIdsRequest.DiscardUnknown(m)
-}
-
-var xxx_messageInfo_AllocateIdsRequest proto.InternalMessageInfo
-
-func (m *AllocateIdsRequest) GetHeader() *InternalHeader {
-	if m != nil {
-		return m.Header
-	}
-	return nil
-}
-
-func (m *AllocateIdsRequest) GetModelKey() *Reference {
-	if m != nil {
-		return m.ModelKey
-	}
-	return nil
-}
-
-func (m *AllocateIdsRequest) GetSize() int64 {
-	if m != nil && m.Size != nil {
-		return *m.Size
-	}
-	return 0
-}
-
-func (m *AllocateIdsRequest) GetMax() int64 {
-	if m != nil && m.Max != nil {
-		return *m.Max
-	}
-	return 0
-}
-
-func (m *AllocateIdsRequest) GetReserve() []*Reference {
-	if m != nil {
-		return m.Reserve
-	}
-	return nil
-}
-
-type AllocateIdsResponse struct {
-	Start                *int64   `protobuf:"varint,1,req,name=start" json:"start,omitempty"`
-	End                  *int64   `protobuf:"varint,2,req,name=end" json:"end,omitempty"`
-	Cost                 *Cost    `protobuf:"bytes,3,opt,name=cost" json:"cost,omitempty"`
-	XXX_NoUnkeyedLiteral struct{} `json:"-"`
-	XXX_unrecognized     []byte   `json:"-"`
-	XXX_sizecache        int32    `json:"-"`
-}
-
-func (m *AllocateIdsResponse) Reset()         { *m = AllocateIdsResponse{} }
-func (m *AllocateIdsResponse) String() string { return proto.CompactTextString(m) }
-func (*AllocateIdsResponse) ProtoMessage()    {}
-func (*AllocateIdsResponse) Descriptor() ([]byte, []int) {
-	return fileDescriptor_datastore_v3_83b17b80c34f6179, []int{32}
-}
-func (m *AllocateIdsResponse) XXX_Unmarshal(b []byte) error {
-	return xxx_messageInfo_AllocateIdsResponse.Unmarshal(m, b)
-}
-func (m *AllocateIdsResponse) XXX_Marshal(b []byte, deterministic bool) ([]byte, error) {
-	return xxx_messageInfo_AllocateIdsResponse.Marshal(b, m, deterministic)
-}
-func (dst *AllocateIdsResponse) XXX_Merge(src proto.Message) {
-	xxx_messageInfo_AllocateIdsResponse.Merge(dst, src)
-}
-func (m *AllocateIdsResponse) XXX_Size() int {
-	return xxx_messageInfo_AllocateIdsResponse.Size(m)
-}
-func (m *AllocateIdsResponse) XXX_DiscardUnknown() {
-	xxx_messageInfo_AllocateIdsResponse.DiscardUnknown(m)
-}
-
-var xxx_messageInfo_AllocateIdsResponse proto.InternalMessageInfo
-
-func (m *AllocateIdsResponse) GetStart() int64 {
-	if m != nil && m.Start != nil {
-		return *m.Start
-	}
-	return 0
-}
-
-func (m *AllocateIdsResponse) GetEnd() int64 {
-	if m != nil && m.End != nil {
-		return *m.End
-	}
-	return 0
-}
-
-func (m *AllocateIdsResponse) GetCost() *Cost {
-	if m != nil {
-		return m.Cost
-	}
-	return nil
-}
-
-type CompositeIndices struct {
-	Index                []*CompositeIndex `protobuf:"bytes,1,rep,name=index" json:"index,omitempty"`
-	XXX_NoUnkeyedLiteral struct{}          `json:"-"`
-	XXX_unrecognized     []byte            `json:"-"`
-	XXX_sizecache        int32             `json:"-"`
-}
-
-func (m *CompositeIndices) Reset()         { *m = CompositeIndices{} }
-func (m *CompositeIndices) String() string { return proto.CompactTextString(m) }
-func (*CompositeIndices) ProtoMessage()    {}
-func (*CompositeIndices) Descriptor() ([]byte, []int) {
-	return fileDescriptor_datastore_v3_83b17b80c34f6179, []int{33}
-}
-func (m *CompositeIndices) XXX_Unmarshal(b []byte) error {
-	return xxx_messageInfo_CompositeIndices.Unmarshal(m, b)
-}
-func (m *CompositeIndices) XXX_Marshal(b []byte, deterministic bool) ([]byte, error) {
-	return xxx_messageInfo_CompositeIndices.Marshal(b, m, deterministic)
-}
-func (dst *CompositeIndices) XXX_Merge(src proto.Message) {
-	xxx_messageInfo_CompositeIndices.Merge(dst, src)
-}
-func (m *CompositeIndices) XXX_Size() int {
-	return xxx_messageInfo_CompositeIndices.Size(m)
-}
-func (m *CompositeIndices) XXX_DiscardUnknown() {
-	xxx_messageInfo_CompositeIndices.DiscardUnknown(m)
-}
-
-var xxx_messageInfo_CompositeIndices proto.InternalMessageInfo
-
-func (m *CompositeIndices) GetIndex() []*CompositeIndex {
-	if m != nil {
-		return m.Index
-	}
-	return nil
-}
-
-type AddActionsRequest struct {
-	Header               *InternalHeader `protobuf:"bytes,3,opt,name=header" json:"header,omitempty"`
-	Transaction          *Transaction    `protobuf:"bytes,1,req,name=transaction" json:"transaction,omitempty"`
-	Action               []*Action       `protobuf:"bytes,2,rep,name=action" json:"action,omitempty"`
-	XXX_NoUnkeyedLiteral struct{}        `json:"-"`
-	XXX_unrecognized     []byte          `json:"-"`
-	XXX_sizecache        int32           `json:"-"`
-}
-
-func (m *AddActionsRequest) Reset()         { *m = AddActionsRequest{} }
-func (m *AddActionsRequest) String() string { return proto.CompactTextString(m) }
-func (*AddActionsRequest) ProtoMessage()    {}
-func (*AddActionsRequest) Descriptor() ([]byte, []int) {
-	return fileDescriptor_datastore_v3_83b17b80c34f6179, []int{34}
-}
-func (m *AddActionsRequest) XXX_Unmarshal(b []byte) error {
-	return xxx_messageInfo_AddActionsRequest.Unmarshal(m, b)
-}
-func (m *AddActionsRequest) XXX_Marshal(b []byte, deterministic bool) ([]byte, error) {
-	return xxx_messageInfo_AddActionsRequest.Marshal(b, m, deterministic)
-}
-func (dst *AddActionsRequest) XXX_Merge(src proto.Message) {
-	xxx_messageInfo_AddActionsRequest.Merge(dst, src)
-}
-func (m *AddActionsRequest) XXX_Size() int {
-	return xxx_messageInfo_AddActionsRequest.Size(m)
-}
-func (m *AddActionsRequest) XXX_DiscardUnknown() {
-	xxx_messageInfo_AddActionsRequest.DiscardUnknown(m)
-}
-
-var xxx_messageInfo_AddActionsRequest proto.InternalMessageInfo
-
-func (m *AddActionsRequest) GetHeader() *InternalHeader {
-	if m != nil {
-		return m.Header
-	}
-	return nil
-}
-
-func (m *AddActionsRequest) GetTransaction() *Transaction {
-	if m != nil {
-		return m.Transaction
-	}
-	return nil
-}
-
-func (m *AddActionsRequest) GetAction() []*Action {
-	if m != nil {
-		return m.Action
-	}
-	return nil
-}
-
-type AddActionsResponse struct {
-	XXX_NoUnkeyedLiteral struct{} `json:"-"`
-	XXX_unrecognized     []byte   `json:"-"`
-	XXX_sizecache        int32    `json:"-"`
-}
-
-func (m *AddActionsResponse) Reset()         { *m = AddActionsResponse{} }
-func (m *AddActionsResponse) String() string { return proto.CompactTextString(m) }
-func (*AddActionsResponse) ProtoMessage()    {}
-func (*AddActionsResponse) Descriptor() ([]byte, []int) {
-	return fileDescriptor_datastore_v3_83b17b80c34f6179, []int{35}
-}
-func (m *AddActionsResponse) XXX_Unmarshal(b []byte) error {
-	return xxx_messageInfo_AddActionsResponse.Unmarshal(m, b)
-}
-func (m *AddActionsResponse) XXX_Marshal(b []byte, deterministic bool) ([]byte, error) {
-	return xxx_messageInfo_AddActionsResponse.Marshal(b, m, deterministic)
-}
-func (dst *AddActionsResponse) XXX_Merge(src proto.Message) {
-	xxx_messageInfo_AddActionsResponse.Merge(dst, src)
-}
-func (m *AddActionsResponse) XXX_Size() int {
-	return xxx_messageInfo_AddActionsResponse.Size(m)
-}
-func (m *AddActionsResponse) XXX_DiscardUnknown() {
-	xxx_messageInfo_AddActionsResponse.DiscardUnknown(m)
-}
-
-var xxx_messageInfo_AddActionsResponse proto.InternalMessageInfo
-
-type BeginTransactionRequest struct {
-	Header               *InternalHeader                          `protobuf:"bytes,3,opt,name=header" json:"header,omitempty"`
-	App                  *string                                  `protobuf:"bytes,1,req,name=app" json:"app,omitempty"`
-	AllowMultipleEg      *bool                                    `protobuf:"varint,2,opt,name=allow_multiple_eg,json=allowMultipleEg,def=0" json:"allow_multiple_eg,omitempty"`
-	DatabaseId           *string                                  `protobuf:"bytes,4,opt,name=database_id,json=databaseId" json:"database_id,omitempty"`
-	Mode                 *BeginTransactionRequest_TransactionMode `protobuf:"varint,5,opt,name=mode,enum=appengine.BeginTransactionRequest_TransactionMode,def=0" json:"mode,omitempty"`
-	PreviousTransaction  *Transaction                             `protobuf:"bytes,7,opt,name=previous_transaction,json=previousTransaction" json:"previous_transaction,omitempty"`
-	XXX_NoUnkeyedLiteral struct{}                                 `json:"-"`
-	XXX_unrecognized     []byte                                   `json:"-"`
-	XXX_sizecache        int32                                    `json:"-"`
-}
-
-func (m *BeginTransactionRequest) Reset()         { *m = BeginTransactionRequest{} }
-func (m *BeginTransactionRequest) String() string { return proto.CompactTextString(m) }
-func (*BeginTransactionRequest) ProtoMessage()    {}
-func (*BeginTransactionRequest) Descriptor() ([]byte, []int) {
-	return fileDescriptor_datastore_v3_83b17b80c34f6179, []int{36}
-}
-func (m *BeginTransactionRequest) XXX_Unmarshal(b []byte) error {
-	return xxx_messageInfo_BeginTransactionRequest.Unmarshal(m, b)
-}
-func (m *BeginTransactionRequest) XXX_Marshal(b []byte, deterministic bool) ([]byte, error) {
-	return xxx_messageInfo_BeginTransactionRequest.Marshal(b, m, deterministic)
-}
-func (dst *BeginTransactionRequest) XXX_Merge(src proto.Message) {
-	xxx_messageInfo_BeginTransactionRequest.Merge(dst, src)
-}
-func (m *BeginTransactionRequest) XXX_Size() int {
-	return xxx_messageInfo_BeginTransactionRequest.Size(m)
-}
-func (m *BeginTransactionRequest) XXX_DiscardUnknown() {
-	xxx_messageInfo_BeginTransactionRequest.DiscardUnknown(m)
-}
-
-var xxx_messageInfo_BeginTransactionRequest proto.InternalMessageInfo
-
-const Default_BeginTransactionRequest_AllowMultipleEg bool = false
-const Default_BeginTransactionRequest_Mode BeginTransactionRequest_TransactionMode = BeginTransactionRequest_UNKNOWN
-
-func (m *BeginTransactionRequest) GetHeader() *InternalHeader {
-	if m != nil {
-		return m.Header
-	}
-	return nil
-}
-
-func (m *BeginTransactionRequest) GetApp() string {
-	if m != nil && m.App != nil {
-		return *m.App
-	}
-	return ""
-}
-
-func (m *BeginTransactionRequest) GetAllowMultipleEg() bool {
-	if m != nil && m.AllowMultipleEg != nil {
-		return *m.AllowMultipleEg
-	}
-	return Default_BeginTransactionRequest_AllowMultipleEg
-}
-
-func (m *BeginTransactionRequest) GetDatabaseId() string {
-	if m != nil && m.DatabaseId != nil {
-		return *m.DatabaseId
-	}
-	return ""
-}
-
-func (m *BeginTransactionRequest) GetMode() BeginTransactionRequest_TransactionMode {
-	if m != nil && m.Mode != nil {
-		return *m.Mode
-	}
-	return Default_BeginTransactionRequest_Mode
-}
-
-func (m *BeginTransactionRequest) GetPreviousTransaction() *Transaction {
-	if m != nil {
-		return m.PreviousTransaction
-	}
-	return nil
-}
-
-type CommitResponse struct {
-	Cost                 *Cost                     `protobuf:"bytes,1,opt,name=cost" json:"cost,omitempty"`
-	Version              []*CommitResponse_Version `protobuf:"group,3,rep,name=Version,json=version" json:"version,omitempty"`
-	XXX_NoUnkeyedLiteral struct{}                  `json:"-"`
-	XXX_unrecognized     []byte                    `json:"-"`
-	XXX_sizecache        int32                     `json:"-"`
-}
-
-func (m *CommitResponse) Reset()         { *m = CommitResponse{} }
-func (m *CommitResponse) String() string { return proto.CompactTextString(m) }
-func (*CommitResponse) ProtoMessage()    {}
-func (*CommitResponse) Descriptor() ([]byte, []int) {
-	return fileDescriptor_datastore_v3_83b17b80c34f6179, []int{37}
-}
-func (m *CommitResponse) XXX_Unmarshal(b []byte) error {
-	return xxx_messageInfo_CommitResponse.Unmarshal(m, b)
-}
-func (m *CommitResponse) XXX_Marshal(b []byte, deterministic bool) ([]byte, error) {
-	return xxx_messageInfo_CommitResponse.Marshal(b, m, deterministic)
-}
-func (dst *CommitResponse) XXX_Merge(src proto.Message) {
-	xxx_messageInfo_CommitResponse.Merge(dst, src)
-}
-func (m *CommitResponse) XXX_Size() int {
-	return xxx_messageInfo_CommitResponse.Size(m)
-}
-func (m *CommitResponse) XXX_DiscardUnknown() {
-	xxx_messageInfo_CommitResponse.DiscardUnknown(m)
-}
-
-var xxx_messageInfo_CommitResponse proto.InternalMessageInfo
-
-func (m *CommitResponse) GetCost() *Cost {
-	if m != nil {
-		return m.Cost
-	}
-	return nil
-}
-
-func (m *CommitResponse) GetVersion() []*CommitResponse_Version {
-	if m != nil {
-		return m.Version
-	}
-	return nil
-}
-
-type CommitResponse_Version struct {
-	RootEntityKey        *Reference `protobuf:"bytes,4,req,name=root_entity_key,json=rootEntityKey" json:"root_entity_key,omitempty"`
-	Version              *int64     `protobuf:"varint,5,req,name=version" json:"version,omitempty"`
-	XXX_NoUnkeyedLiteral struct{}   `json:"-"`
-	XXX_unrecognized     []byte     `json:"-"`
-	XXX_sizecache        int32      `json:"-"`
-}
-
-func (m *CommitResponse_Version) Reset()         { *m = CommitResponse_Version{} }
-func (m *CommitResponse_Version) String() string { return proto.CompactTextString(m) }
-func (*CommitResponse_Version) ProtoMessage()    {}
-func (*CommitResponse_Version) Descriptor() ([]byte, []int) {
-	return fileDescriptor_datastore_v3_83b17b80c34f6179, []int{37, 0}
-}
-func (m *CommitResponse_Version) XXX_Unmarshal(b []byte) error {
-	return xxx_messageInfo_CommitResponse_Version.Unmarshal(m, b)
-}
-func (m *CommitResponse_Version) XXX_Marshal(b []byte, deterministic bool) ([]byte, error) {
-	return xxx_messageInfo_CommitResponse_Version.Marshal(b, m, deterministic)
-}
-func (dst *CommitResponse_Version) XXX_Merge(src proto.Message) {
-	xxx_messageInfo_CommitResponse_Version.Merge(dst, src)
-}
-func (m *CommitResponse_Version) XXX_Size() int {
-	return xxx_messageInfo_CommitResponse_Version.Size(m)
-}
-func (m *CommitResponse_Version) XXX_DiscardUnknown() {
-	xxx_messageInfo_CommitResponse_Version.DiscardUnknown(m)
-}
-
-var xxx_messageInfo_CommitResponse_Version proto.InternalMessageInfo
-
-func (m *CommitResponse_Version) GetRootEntityKey() *Reference {
-	if m != nil {
-		return m.RootEntityKey
-	}
-	return nil
-}
-
-func (m *CommitResponse_Version) GetVersion() int64 {
-	if m != nil && m.Version != nil {
-		return *m.Version
-	}
-	return 0
-}
-
-func init() {
-	proto.RegisterType((*Action)(nil), "appengine.Action")
-	proto.RegisterType((*PropertyValue)(nil), "appengine.PropertyValue")
-	proto.RegisterType((*PropertyValue_PointValue)(nil), "appengine.PropertyValue.PointValue")
-	proto.RegisterType((*PropertyValue_UserValue)(nil), "appengine.PropertyValue.UserValue")
-	proto.RegisterType((*PropertyValue_ReferenceValue)(nil), "appengine.PropertyValue.ReferenceValue")
-	proto.RegisterType((*PropertyValue_ReferenceValue_PathElement)(nil), "appengine.PropertyValue.ReferenceValue.PathElement")
-	proto.RegisterType((*Property)(nil), "appengine.Property")
-	proto.RegisterType((*Path)(nil), "appengine.Path")
-	proto.RegisterType((*Path_Element)(nil), "appengine.Path.Element")
-	proto.RegisterType((*Reference)(nil), "appengine.Reference")
-	proto.RegisterType((*User)(nil), "appengine.User")
-	proto.RegisterType((*EntityProto)(nil), "appengine.EntityProto")
-	proto.RegisterType((*CompositeProperty)(nil), "appengine.CompositeProperty")
-	proto.RegisterType((*Index)(nil), "appengine.Index")
-	proto.RegisterType((*Index_Property)(nil), "appengine.Index.Property")
-	proto.RegisterType((*CompositeIndex)(nil), "appengine.CompositeIndex")
-	proto.RegisterType((*IndexPostfix)(nil), "appengine.IndexPostfix")
-	proto.RegisterType((*IndexPostfix_IndexValue)(nil), "appengine.IndexPostfix.IndexValue")
-	proto.RegisterType((*IndexPosition)(nil), "appengine.IndexPosition")
-	proto.RegisterType((*Snapshot)(nil), "appengine.Snapshot")
-	proto.RegisterType((*InternalHeader)(nil), "appengine.InternalHeader")
-	proto.RegisterType((*Transaction)(nil), "appengine.Transaction")
-	proto.RegisterType((*Query)(nil), "appengine.Query")
-	proto.RegisterType((*Query_Filter)(nil), "appengine.Query.Filter")
-	proto.RegisterType((*Query_Order)(nil), "appengine.Query.Order")
-	proto.RegisterType((*CompiledQuery)(nil), "appengine.CompiledQuery")
-	proto.RegisterType((*CompiledQuery_PrimaryScan)(nil), "appengine.CompiledQuery.PrimaryScan")
-	proto.RegisterType((*CompiledQuery_MergeJoinScan)(nil), "appengine.CompiledQuery.MergeJoinScan")
-	proto.RegisterType((*CompiledQuery_EntityFilter)(nil), "appengine.CompiledQuery.EntityFilter")
-	proto.RegisterType((*CompiledCursor)(nil), "appengine.CompiledCursor")
-	proto.RegisterType((*CompiledCursor_Position)(nil), "appengine.CompiledCursor.Position")
-	proto.RegisterType((*CompiledCursor_Position_IndexValue)(nil), "appengine.CompiledCursor.Position.IndexValue")
-	proto.RegisterType((*Cursor)(nil), "appengine.Cursor")
-	proto.RegisterType((*Error)(nil), "appengine.Error")
-	proto.RegisterType((*Cost)(nil), "appengine.Cost")
-	proto.RegisterType((*Cost_CommitCost)(nil), "appengine.Cost.CommitCost")
-	proto.RegisterType((*GetRequest)(nil), "appengine.GetRequest")
-	proto.RegisterType((*GetResponse)(nil), "appengine.GetResponse")
-	proto.RegisterType((*GetResponse_Entity)(nil), "appengine.GetResponse.Entity")
-	proto.RegisterType((*PutRequest)(nil), "appengine.PutRequest")
-	proto.RegisterType((*PutResponse)(nil), "appengine.PutResponse")
-	proto.RegisterType((*TouchRequest)(nil), "appengine.TouchRequest")
-	proto.RegisterType((*TouchResponse)(nil), "appengine.TouchResponse")
-	proto.RegisterType((*DeleteRequest)(nil), "appengine.DeleteRequest")
-	proto.RegisterType((*DeleteResponse)(nil), "appengine.DeleteResponse")
-	proto.RegisterType((*NextRequest)(nil), "appengine.NextRequest")
-	proto.RegisterType((*QueryResult)(nil), "appengine.QueryResult")
-	proto.RegisterType((*AllocateIdsRequest)(nil), "appengine.AllocateIdsRequest")
-	proto.RegisterType((*AllocateIdsResponse)(nil), "appengine.AllocateIdsResponse")
-	proto.RegisterType((*CompositeIndices)(nil), "appengine.CompositeIndices")
-	proto.RegisterType((*AddActionsRequest)(nil), "appengine.AddActionsRequest")
-	proto.RegisterType((*AddActionsResponse)(nil), "appengine.AddActionsResponse")
-	proto.RegisterType((*BeginTransactionRequest)(nil), "appengine.BeginTransactionRequest")
-	proto.RegisterType((*CommitResponse)(nil), "appengine.CommitResponse")
-	proto.RegisterType((*CommitResponse_Version)(nil), "appengine.CommitResponse.Version")
-}
-
-func init() {
-	proto.RegisterFile("google.golang.org/appengine/internal/datastore/datastore_v3.proto", fileDescriptor_datastore_v3_83b17b80c34f6179)
-}
-
-var fileDescriptor_datastore_v3_83b17b80c34f6179 = []byte{
-	// 4156 bytes of a gzipped FileDescriptorProto
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-	0x76, 0x37, 0xc1, 0xef, 0x47, 0x89, 0x82, 0x5a, 0xf3, 0xc1, 0xa1, 0x3f, 0x46, 0xc6, 0xac, 0x6d,
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-	0x1b, 0xb9, 0x1d, 0x49, 0x47, 0xbe, 0x85, 0x5f, 0x2b, 0xc3, 0x58, 0x7e, 0xb4, 0x12, 0x03, 0xfe,
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-	0x0f, 0x7c, 0x87, 0xed, 0x54, 0x8f, 0x06, 0x4f, 0x06, 0xc3, 0xef, 0x06, 0x14, 0x17, 0x22, 0x06,
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-	0x56, 0xa1, 0x8e, 0x1f, 0xbb, 0x97, 0x7f, 0xfb, 0xd6, 0xfe, 0xb5, 0x80, 0x57, 0x4c, 0x33, 0x37,
-	0xbe, 0x59, 0x06, 0xfb, 0xcd, 0x7c, 0x06, 0x83, 0xed, 0x77, 0xf3, 0xe6, 0x9b, 0x59, 0xb0, 0xf3,
-	0xad, 0x00, 0xa6, 0x41, 0xa4, 0x6d, 0x43, 0x55, 0xd2, 0xc8, 0x6f, 0xc1, 0x5a, 0xe8, 0xfb, 0x71,
-	0xd2, 0x89, 0x8a, 0x0e, 0xe4, 0xf2, 0x3f, 0xdb, 0xac, 0x72, 0xb0, 0x48, 0x06, 0x4f, 0xf2, 0xbd,
-	0x48, 0x59, 0xfc, 0x0d, 0x44, 0x0e, 0x77, 0x1b, 0xbf, 0x5b, 0x4f, 0xff, 0xb7, 0xfb, 0xbf, 0x01,
-	0x00, 0x00, 0xff, 0xff, 0x35, 0x9f, 0x30, 0x98, 0xf2, 0x2b, 0x00, 0x00,
-}
diff --git a/vendor/google.golang.org/appengine/internal/identity.go b/vendor/google.golang.org/appengine/internal/identity.go
deleted file mode 100644
index d538701ab..000000000
--- a/vendor/google.golang.org/appengine/internal/identity.go
+++ /dev/null
@@ -1,14 +0,0 @@
-// Copyright 2011 Google Inc. All rights reserved.
-// Use of this source code is governed by the Apache 2.0
-// license that can be found in the LICENSE file.
-
-package internal
-
-import netcontext "golang.org/x/net/context"
-
-// These functions are implementations of the wrapper functions
-// in ../appengine/identity.go. See that file for commentary.
-
-func AppID(c netcontext.Context) string {
-	return appID(FullyQualifiedAppID(c))
-}
diff --git a/vendor/google.golang.org/appengine/internal/identity_classic.go b/vendor/google.golang.org/appengine/internal/identity_classic.go
deleted file mode 100644
index b59603f13..000000000
--- a/vendor/google.golang.org/appengine/internal/identity_classic.go
+++ /dev/null
@@ -1,57 +0,0 @@
-// Copyright 2015 Google Inc. All rights reserved.
-// Use of this source code is governed by the Apache 2.0
-// license that can be found in the LICENSE file.
-
-// +build appengine
-
-package internal
-
-import (
-	"appengine"
-
-	netcontext "golang.org/x/net/context"
-)
-
-func DefaultVersionHostname(ctx netcontext.Context) string {
-	c := fromContext(ctx)
-	if c == nil {
-		panic(errNotAppEngineContext)
-	}
-	return appengine.DefaultVersionHostname(c)
-}
-
-func Datacenter(_ netcontext.Context) string { return appengine.Datacenter() }
-func ServerSoftware() string                 { return appengine.ServerSoftware() }
-func InstanceID() string                     { return appengine.InstanceID() }
-func IsDevAppServer() bool                   { return appengine.IsDevAppServer() }
-
-func RequestID(ctx netcontext.Context) string {
-	c := fromContext(ctx)
-	if c == nil {
-		panic(errNotAppEngineContext)
-	}
-	return appengine.RequestID(c)
-}
-
-func ModuleName(ctx netcontext.Context) string {
-	c := fromContext(ctx)
-	if c == nil {
-		panic(errNotAppEngineContext)
-	}
-	return appengine.ModuleName(c)
-}
-func VersionID(ctx netcontext.Context) string {
-	c := fromContext(ctx)
-	if c == nil {
-		panic(errNotAppEngineContext)
-	}
-	return appengine.VersionID(c)
-}
-
-func fullyQualifiedAppID(ctx netcontext.Context) string {
-	c := fromContext(ctx)
-	if c == nil {
-		panic(errNotAppEngineContext)
-	}
-	return c.FullyQualifiedAppID()
-}
diff --git a/vendor/google.golang.org/appengine/internal/identity_vm.go b/vendor/google.golang.org/appengine/internal/identity_vm.go
deleted file mode 100644
index 5d8067263..000000000
--- a/vendor/google.golang.org/appengine/internal/identity_vm.go
+++ /dev/null
@@ -1,134 +0,0 @@
-// Copyright 2011 Google Inc. All rights reserved.
-// Use of this source code is governed by the Apache 2.0
-// license that can be found in the LICENSE file.
-
-// +build !appengine
-
-package internal
-
-import (
-	"log"
-	"net/http"
-	"os"
-	"strings"
-
-	netcontext "golang.org/x/net/context"
-)
-
-// These functions are implementations of the wrapper functions
-// in ../appengine/identity.go. See that file for commentary.
-
-const (
-	hDefaultVersionHostname = "X-AppEngine-Default-Version-Hostname"
-	hRequestLogId           = "X-AppEngine-Request-Log-Id"
-	hDatacenter             = "X-AppEngine-Datacenter"
-)
-
-func ctxHeaders(ctx netcontext.Context) http.Header {
-	c := fromContext(ctx)
-	if c == nil {
-		return nil
-	}
-	return c.Request().Header
-}
-
-func DefaultVersionHostname(ctx netcontext.Context) string {
-	return ctxHeaders(ctx).Get(hDefaultVersionHostname)
-}
-
-func RequestID(ctx netcontext.Context) string {
-	return ctxHeaders(ctx).Get(hRequestLogId)
-}
-
-func Datacenter(ctx netcontext.Context) string {
-	if dc := ctxHeaders(ctx).Get(hDatacenter); dc != "" {
-		return dc
-	}
-	// If the header isn't set, read zone from the metadata service.
-	// It has the format projects/[NUMERIC_PROJECT_ID]/zones/[ZONE]
-	zone, err := getMetadata("instance/zone")
-	if err != nil {
-		log.Printf("Datacenter: %v", err)
-		return ""
-	}
-	parts := strings.Split(string(zone), "/")
-	if len(parts) == 0 {
-		return ""
-	}
-	return parts[len(parts)-1]
-}
-
-func ServerSoftware() string {
-	// TODO(dsymonds): Remove fallback when we've verified this.
-	if s := os.Getenv("SERVER_SOFTWARE"); s != "" {
-		return s
-	}
-	if s := os.Getenv("GAE_ENV"); s != "" {
-		return s
-	}
-	return "Google App Engine/1.x.x"
-}
-
-// TODO(dsymonds): Remove the metadata fetches.
-
-func ModuleName(_ netcontext.Context) string {
-	if s := os.Getenv("GAE_MODULE_NAME"); s != "" {
-		return s
-	}
-	if s := os.Getenv("GAE_SERVICE"); s != "" {
-		return s
-	}
-	return string(mustGetMetadata("instance/attributes/gae_backend_name"))
-}
-
-func VersionID(_ netcontext.Context) string {
-	if s1, s2 := os.Getenv("GAE_MODULE_VERSION"), os.Getenv("GAE_MINOR_VERSION"); s1 != "" && s2 != "" {
-		return s1 + "." + s2
-	}
-	if s1, s2 := os.Getenv("GAE_VERSION"), os.Getenv("GAE_DEPLOYMENT_ID"); s1 != "" && s2 != "" {
-		return s1 + "." + s2
-	}
-	return string(mustGetMetadata("instance/attributes/gae_backend_version")) + "." + string(mustGetMetadata("instance/attributes/gae_backend_minor_version"))
-}
-
-func InstanceID() string {
-	if s := os.Getenv("GAE_MODULE_INSTANCE"); s != "" {
-		return s
-	}
-	if s := os.Getenv("GAE_INSTANCE"); s != "" {
-		return s
-	}
-	return string(mustGetMetadata("instance/attributes/gae_backend_instance"))
-}
-
-func partitionlessAppID() string {
-	// gae_project has everything except the partition prefix.
-	if appID := os.Getenv("GAE_LONG_APP_ID"); appID != "" {
-		return appID
-	}
-	if project := os.Getenv("GOOGLE_CLOUD_PROJECT"); project != "" {
-		return project
-	}
-	return string(mustGetMetadata("instance/attributes/gae_project"))
-}
-
-func fullyQualifiedAppID(_ netcontext.Context) string {
-	if s := os.Getenv("GAE_APPLICATION"); s != "" {
-		return s
-	}
-	appID := partitionlessAppID()
-
-	part := os.Getenv("GAE_PARTITION")
-	if part == "" {
-		part = string(mustGetMetadata("instance/attributes/gae_partition"))
-	}
-
-	if part != "" {
-		appID = part + "~" + appID
-	}
-	return appID
-}
-
-func IsDevAppServer() bool {
-	return os.Getenv("RUN_WITH_DEVAPPSERVER") != ""
-}
diff --git a/vendor/google.golang.org/appengine/internal/internal.go b/vendor/google.golang.org/appengine/internal/internal.go
deleted file mode 100644
index 051ea3980..000000000
--- a/vendor/google.golang.org/appengine/internal/internal.go
+++ /dev/null
@@ -1,110 +0,0 @@
-// Copyright 2011 Google Inc. All rights reserved.
-// Use of this source code is governed by the Apache 2.0
-// license that can be found in the LICENSE file.
-
-// Package internal provides support for package appengine.
-//
-// Programs should not use this package directly. Its API is not stable.
-// Use packages appengine and appengine/* instead.
-package internal
-
-import (
-	"fmt"
-
-	"github.com/golang/protobuf/proto"
-
-	remotepb "google.golang.org/appengine/internal/remote_api"
-)
-
-// errorCodeMaps is a map of service name to the error code map for the service.
-var errorCodeMaps = make(map[string]map[int32]string)
-
-// RegisterErrorCodeMap is called from API implementations to register their
-// error code map. This should only be called from init functions.
-func RegisterErrorCodeMap(service string, m map[int32]string) {
-	errorCodeMaps[service] = m
-}
-
-type timeoutCodeKey struct {
-	service string
-	code    int32
-}
-
-// timeoutCodes is the set of service+code pairs that represent timeouts.
-var timeoutCodes = make(map[timeoutCodeKey]bool)
-
-func RegisterTimeoutErrorCode(service string, code int32) {
-	timeoutCodes[timeoutCodeKey{service, code}] = true
-}
-
-// APIError is the type returned by appengine.Context's Call method
-// when an API call fails in an API-specific way. This may be, for instance,
-// a taskqueue API call failing with TaskQueueServiceError::UNKNOWN_QUEUE.
-type APIError struct {
-	Service string
-	Detail  string
-	Code    int32 // API-specific error code
-}
-
-func (e *APIError) Error() string {
-	if e.Code == 0 {
-		if e.Detail == "" {
-			return "APIError <empty>"
-		}
-		return e.Detail
-	}
-	s := fmt.Sprintf("API error %d", e.Code)
-	if m, ok := errorCodeMaps[e.Service]; ok {
-		s += " (" + e.Service + ": " + m[e.Code] + ")"
-	} else {
-		// Shouldn't happen, but provide a bit more detail if it does.
-		s = e.Service + " " + s
-	}
-	if e.Detail != "" {
-		s += ": " + e.Detail
-	}
-	return s
-}
-
-func (e *APIError) IsTimeout() bool {
-	return timeoutCodes[timeoutCodeKey{e.Service, e.Code}]
-}
-
-// CallError is the type returned by appengine.Context's Call method when an
-// API call fails in a generic way, such as RpcError::CAPABILITY_DISABLED.
-type CallError struct {
-	Detail string
-	Code   int32
-	// TODO: Remove this if we get a distinguishable error code.
-	Timeout bool
-}
-
-func (e *CallError) Error() string {
-	var msg string
-	switch remotepb.RpcError_ErrorCode(e.Code) {
-	case remotepb.RpcError_UNKNOWN:
-		return e.Detail
-	case remotepb.RpcError_OVER_QUOTA:
-		msg = "Over quota"
-	case remotepb.RpcError_CAPABILITY_DISABLED:
-		msg = "Capability disabled"
-	case remotepb.RpcError_CANCELLED:
-		msg = "Canceled"
-	default:
-		msg = fmt.Sprintf("Call error %d", e.Code)
-	}
-	s := msg + ": " + e.Detail
-	if e.Timeout {
-		s += " (timeout)"
-	}
-	return s
-}
-
-func (e *CallError) IsTimeout() bool {
-	return e.Timeout
-}
-
-// NamespaceMods is a map from API service to a function that will mutate an RPC request to attach a namespace.
-// The function should be prepared to be called on the same message more than once; it should only modify the
-// RPC request the first time.
-var NamespaceMods = make(map[string]func(m proto.Message, namespace string))
diff --git a/vendor/google.golang.org/appengine/internal/log/log_service.pb.go b/vendor/google.golang.org/appengine/internal/log/log_service.pb.go
deleted file mode 100644
index 8545ac4ad..000000000
--- a/vendor/google.golang.org/appengine/internal/log/log_service.pb.go
+++ /dev/null
@@ -1,1313 +0,0 @@
-// Code generated by protoc-gen-go. DO NOT EDIT.
-// source: google.golang.org/appengine/internal/log/log_service.proto
-
-package log
-
-import proto "github.com/golang/protobuf/proto"
-import fmt "fmt"
-import math "math"
-
-// Reference imports to suppress errors if they are not otherwise used.
-var _ = proto.Marshal
-var _ = fmt.Errorf
-var _ = math.Inf
-
-// This is a compile-time assertion to ensure that this generated file
-// is compatible with the proto package it is being compiled against.
-// A compilation error at this line likely means your copy of the
-// proto package needs to be updated.
-const _ = proto.ProtoPackageIsVersion2 // please upgrade the proto package
-
-type LogServiceError_ErrorCode int32
-
-const (
-	LogServiceError_OK              LogServiceError_ErrorCode = 0
-	LogServiceError_INVALID_REQUEST LogServiceError_ErrorCode = 1
-	LogServiceError_STORAGE_ERROR   LogServiceError_ErrorCode = 2
-)
-
-var LogServiceError_ErrorCode_name = map[int32]string{
-	0: "OK",
-	1: "INVALID_REQUEST",
-	2: "STORAGE_ERROR",
-}
-var LogServiceError_ErrorCode_value = map[string]int32{
-	"OK":              0,
-	"INVALID_REQUEST": 1,
-	"STORAGE_ERROR":   2,
-}
-
-func (x LogServiceError_ErrorCode) Enum() *LogServiceError_ErrorCode {
-	p := new(LogServiceError_ErrorCode)
-	*p = x
-	return p
-}
-func (x LogServiceError_ErrorCode) String() string {
-	return proto.EnumName(LogServiceError_ErrorCode_name, int32(x))
-}
-func (x *LogServiceError_ErrorCode) UnmarshalJSON(data []byte) error {
-	value, err := proto.UnmarshalJSONEnum(LogServiceError_ErrorCode_value, data, "LogServiceError_ErrorCode")
-	if err != nil {
-		return err
-	}
-	*x = LogServiceError_ErrorCode(value)
-	return nil
-}
-func (LogServiceError_ErrorCode) EnumDescriptor() ([]byte, []int) {
-	return fileDescriptor_log_service_f054fd4b5012319d, []int{0, 0}
-}
-
-type LogServiceError struct {
-	XXX_NoUnkeyedLiteral struct{} `json:"-"`
-	XXX_unrecognized     []byte   `json:"-"`
-	XXX_sizecache        int32    `json:"-"`
-}
-
-func (m *LogServiceError) Reset()         { *m = LogServiceError{} }
-func (m *LogServiceError) String() string { return proto.CompactTextString(m) }
-func (*LogServiceError) ProtoMessage()    {}
-func (*LogServiceError) Descriptor() ([]byte, []int) {
-	return fileDescriptor_log_service_f054fd4b5012319d, []int{0}
-}
-func (m *LogServiceError) XXX_Unmarshal(b []byte) error {
-	return xxx_messageInfo_LogServiceError.Unmarshal(m, b)
-}
-func (m *LogServiceError) XXX_Marshal(b []byte, deterministic bool) ([]byte, error) {
-	return xxx_messageInfo_LogServiceError.Marshal(b, m, deterministic)
-}
-func (dst *LogServiceError) XXX_Merge(src proto.Message) {
-	xxx_messageInfo_LogServiceError.Merge(dst, src)
-}
-func (m *LogServiceError) XXX_Size() int {
-	return xxx_messageInfo_LogServiceError.Size(m)
-}
-func (m *LogServiceError) XXX_DiscardUnknown() {
-	xxx_messageInfo_LogServiceError.DiscardUnknown(m)
-}
-
-var xxx_messageInfo_LogServiceError proto.InternalMessageInfo
-
-type UserAppLogLine struct {
-	TimestampUsec        *int64   `protobuf:"varint,1,req,name=timestamp_usec,json=timestampUsec" json:"timestamp_usec,omitempty"`
-	Level                *int64   `protobuf:"varint,2,req,name=level" json:"level,omitempty"`
-	Message              *string  `protobuf:"bytes,3,req,name=message" json:"message,omitempty"`
-	XXX_NoUnkeyedLiteral struct{} `json:"-"`
-	XXX_unrecognized     []byte   `json:"-"`
-	XXX_sizecache        int32    `json:"-"`
-}
-
-func (m *UserAppLogLine) Reset()         { *m = UserAppLogLine{} }
-func (m *UserAppLogLine) String() string { return proto.CompactTextString(m) }
-func (*UserAppLogLine) ProtoMessage()    {}
-func (*UserAppLogLine) Descriptor() ([]byte, []int) {
-	return fileDescriptor_log_service_f054fd4b5012319d, []int{1}
-}
-func (m *UserAppLogLine) XXX_Unmarshal(b []byte) error {
-	return xxx_messageInfo_UserAppLogLine.Unmarshal(m, b)
-}
-func (m *UserAppLogLine) XXX_Marshal(b []byte, deterministic bool) ([]byte, error) {
-	return xxx_messageInfo_UserAppLogLine.Marshal(b, m, deterministic)
-}
-func (dst *UserAppLogLine) XXX_Merge(src proto.Message) {
-	xxx_messageInfo_UserAppLogLine.Merge(dst, src)
-}
-func (m *UserAppLogLine) XXX_Size() int {
-	return xxx_messageInfo_UserAppLogLine.Size(m)
-}
-func (m *UserAppLogLine) XXX_DiscardUnknown() {
-	xxx_messageInfo_UserAppLogLine.DiscardUnknown(m)
-}
-
-var xxx_messageInfo_UserAppLogLine proto.InternalMessageInfo
-
-func (m *UserAppLogLine) GetTimestampUsec() int64 {
-	if m != nil && m.TimestampUsec != nil {
-		return *m.TimestampUsec
-	}
-	return 0
-}
-
-func (m *UserAppLogLine) GetLevel() int64 {
-	if m != nil && m.Level != nil {
-		return *m.Level
-	}
-	return 0
-}
-
-func (m *UserAppLogLine) GetMessage() string {
-	if m != nil && m.Message != nil {
-		return *m.Message
-	}
-	return ""
-}
-
-type UserAppLogGroup struct {
-	LogLine              []*UserAppLogLine `protobuf:"bytes,2,rep,name=log_line,json=logLine" json:"log_line,omitempty"`
-	XXX_NoUnkeyedLiteral struct{}          `json:"-"`
-	XXX_unrecognized     []byte            `json:"-"`
-	XXX_sizecache        int32             `json:"-"`
-}
-
-func (m *UserAppLogGroup) Reset()         { *m = UserAppLogGroup{} }
-func (m *UserAppLogGroup) String() string { return proto.CompactTextString(m) }
-func (*UserAppLogGroup) ProtoMessage()    {}
-func (*UserAppLogGroup) Descriptor() ([]byte, []int) {
-	return fileDescriptor_log_service_f054fd4b5012319d, []int{2}
-}
-func (m *UserAppLogGroup) XXX_Unmarshal(b []byte) error {
-	return xxx_messageInfo_UserAppLogGroup.Unmarshal(m, b)
-}
-func (m *UserAppLogGroup) XXX_Marshal(b []byte, deterministic bool) ([]byte, error) {
-	return xxx_messageInfo_UserAppLogGroup.Marshal(b, m, deterministic)
-}
-func (dst *UserAppLogGroup) XXX_Merge(src proto.Message) {
-	xxx_messageInfo_UserAppLogGroup.Merge(dst, src)
-}
-func (m *UserAppLogGroup) XXX_Size() int {
-	return xxx_messageInfo_UserAppLogGroup.Size(m)
-}
-func (m *UserAppLogGroup) XXX_DiscardUnknown() {
-	xxx_messageInfo_UserAppLogGroup.DiscardUnknown(m)
-}
-
-var xxx_messageInfo_UserAppLogGroup proto.InternalMessageInfo
-
-func (m *UserAppLogGroup) GetLogLine() []*UserAppLogLine {
-	if m != nil {
-		return m.LogLine
-	}
-	return nil
-}
-
-type FlushRequest struct {
-	Logs                 []byte   `protobuf:"bytes,1,opt,name=logs" json:"logs,omitempty"`
-	XXX_NoUnkeyedLiteral struct{} `json:"-"`
-	XXX_unrecognized     []byte   `json:"-"`
-	XXX_sizecache        int32    `json:"-"`
-}
-
-func (m *FlushRequest) Reset()         { *m = FlushRequest{} }
-func (m *FlushRequest) String() string { return proto.CompactTextString(m) }
-func (*FlushRequest) ProtoMessage()    {}
-func (*FlushRequest) Descriptor() ([]byte, []int) {
-	return fileDescriptor_log_service_f054fd4b5012319d, []int{3}
-}
-func (m *FlushRequest) XXX_Unmarshal(b []byte) error {
-	return xxx_messageInfo_FlushRequest.Unmarshal(m, b)
-}
-func (m *FlushRequest) XXX_Marshal(b []byte, deterministic bool) ([]byte, error) {
-	return xxx_messageInfo_FlushRequest.Marshal(b, m, deterministic)
-}
-func (dst *FlushRequest) XXX_Merge(src proto.Message) {
-	xxx_messageInfo_FlushRequest.Merge(dst, src)
-}
-func (m *FlushRequest) XXX_Size() int {
-	return xxx_messageInfo_FlushRequest.Size(m)
-}
-func (m *FlushRequest) XXX_DiscardUnknown() {
-	xxx_messageInfo_FlushRequest.DiscardUnknown(m)
-}
-
-var xxx_messageInfo_FlushRequest proto.InternalMessageInfo
-
-func (m *FlushRequest) GetLogs() []byte {
-	if m != nil {
-		return m.Logs
-	}
-	return nil
-}
-
-type SetStatusRequest struct {
-	Status               *string  `protobuf:"bytes,1,req,name=status" json:"status,omitempty"`
-	XXX_NoUnkeyedLiteral struct{} `json:"-"`
-	XXX_unrecognized     []byte   `json:"-"`
-	XXX_sizecache        int32    `json:"-"`
-}
-
-func (m *SetStatusRequest) Reset()         { *m = SetStatusRequest{} }
-func (m *SetStatusRequest) String() string { return proto.CompactTextString(m) }
-func (*SetStatusRequest) ProtoMessage()    {}
-func (*SetStatusRequest) Descriptor() ([]byte, []int) {
-	return fileDescriptor_log_service_f054fd4b5012319d, []int{4}
-}
-func (m *SetStatusRequest) XXX_Unmarshal(b []byte) error {
-	return xxx_messageInfo_SetStatusRequest.Unmarshal(m, b)
-}
-func (m *SetStatusRequest) XXX_Marshal(b []byte, deterministic bool) ([]byte, error) {
-	return xxx_messageInfo_SetStatusRequest.Marshal(b, m, deterministic)
-}
-func (dst *SetStatusRequest) XXX_Merge(src proto.Message) {
-	xxx_messageInfo_SetStatusRequest.Merge(dst, src)
-}
-func (m *SetStatusRequest) XXX_Size() int {
-	return xxx_messageInfo_SetStatusRequest.Size(m)
-}
-func (m *SetStatusRequest) XXX_DiscardUnknown() {
-	xxx_messageInfo_SetStatusRequest.DiscardUnknown(m)
-}
-
-var xxx_messageInfo_SetStatusRequest proto.InternalMessageInfo
-
-func (m *SetStatusRequest) GetStatus() string {
-	if m != nil && m.Status != nil {
-		return *m.Status
-	}
-	return ""
-}
-
-type LogOffset struct {
-	RequestId            []byte   `protobuf:"bytes,1,opt,name=request_id,json=requestId" json:"request_id,omitempty"`
-	XXX_NoUnkeyedLiteral struct{} `json:"-"`
-	XXX_unrecognized     []byte   `json:"-"`
-	XXX_sizecache        int32    `json:"-"`
-}
-
-func (m *LogOffset) Reset()         { *m = LogOffset{} }
-func (m *LogOffset) String() string { return proto.CompactTextString(m) }
-func (*LogOffset) ProtoMessage()    {}
-func (*LogOffset) Descriptor() ([]byte, []int) {
-	return fileDescriptor_log_service_f054fd4b5012319d, []int{5}
-}
-func (m *LogOffset) XXX_Unmarshal(b []byte) error {
-	return xxx_messageInfo_LogOffset.Unmarshal(m, b)
-}
-func (m *LogOffset) XXX_Marshal(b []byte, deterministic bool) ([]byte, error) {
-	return xxx_messageInfo_LogOffset.Marshal(b, m, deterministic)
-}
-func (dst *LogOffset) XXX_Merge(src proto.Message) {
-	xxx_messageInfo_LogOffset.Merge(dst, src)
-}
-func (m *LogOffset) XXX_Size() int {
-	return xxx_messageInfo_LogOffset.Size(m)
-}
-func (m *LogOffset) XXX_DiscardUnknown() {
-	xxx_messageInfo_LogOffset.DiscardUnknown(m)
-}
-
-var xxx_messageInfo_LogOffset proto.InternalMessageInfo
-
-func (m *LogOffset) GetRequestId() []byte {
-	if m != nil {
-		return m.RequestId
-	}
-	return nil
-}
-
-type LogLine struct {
-	Time                 *int64   `protobuf:"varint,1,req,name=time" json:"time,omitempty"`
-	Level                *int32   `protobuf:"varint,2,req,name=level" json:"level,omitempty"`
-	LogMessage           *string  `protobuf:"bytes,3,req,name=log_message,json=logMessage" json:"log_message,omitempty"`
-	XXX_NoUnkeyedLiteral struct{} `json:"-"`
-	XXX_unrecognized     []byte   `json:"-"`
-	XXX_sizecache        int32    `json:"-"`
-}
-
-func (m *LogLine) Reset()         { *m = LogLine{} }
-func (m *LogLine) String() string { return proto.CompactTextString(m) }
-func (*LogLine) ProtoMessage()    {}
-func (*LogLine) Descriptor() ([]byte, []int) {
-	return fileDescriptor_log_service_f054fd4b5012319d, []int{6}
-}
-func (m *LogLine) XXX_Unmarshal(b []byte) error {
-	return xxx_messageInfo_LogLine.Unmarshal(m, b)
-}
-func (m *LogLine) XXX_Marshal(b []byte, deterministic bool) ([]byte, error) {
-	return xxx_messageInfo_LogLine.Marshal(b, m, deterministic)
-}
-func (dst *LogLine) XXX_Merge(src proto.Message) {
-	xxx_messageInfo_LogLine.Merge(dst, src)
-}
-func (m *LogLine) XXX_Size() int {
-	return xxx_messageInfo_LogLine.Size(m)
-}
-func (m *LogLine) XXX_DiscardUnknown() {
-	xxx_messageInfo_LogLine.DiscardUnknown(m)
-}
-
-var xxx_messageInfo_LogLine proto.InternalMessageInfo
-
-func (m *LogLine) GetTime() int64 {
-	if m != nil && m.Time != nil {
-		return *m.Time
-	}
-	return 0
-}
-
-func (m *LogLine) GetLevel() int32 {
-	if m != nil && m.Level != nil {
-		return *m.Level
-	}
-	return 0
-}
-
-func (m *LogLine) GetLogMessage() string {
-	if m != nil && m.LogMessage != nil {
-		return *m.LogMessage
-	}
-	return ""
-}
-
-type RequestLog struct {
-	AppId                   *string    `protobuf:"bytes,1,req,name=app_id,json=appId" json:"app_id,omitempty"`
-	ModuleId                *string    `protobuf:"bytes,37,opt,name=module_id,json=moduleId,def=default" json:"module_id,omitempty"`
-	VersionId               *string    `protobuf:"bytes,2,req,name=version_id,json=versionId" json:"version_id,omitempty"`
-	RequestId               []byte     `protobuf:"bytes,3,req,name=request_id,json=requestId" json:"request_id,omitempty"`
-	Offset                  *LogOffset `protobuf:"bytes,35,opt,name=offset" json:"offset,omitempty"`
-	Ip                      *string    `protobuf:"bytes,4,req,name=ip" json:"ip,omitempty"`
-	Nickname                *string    `protobuf:"bytes,5,opt,name=nickname" json:"nickname,omitempty"`
-	StartTime               *int64     `protobuf:"varint,6,req,name=start_time,json=startTime" json:"start_time,omitempty"`
-	EndTime                 *int64     `protobuf:"varint,7,req,name=end_time,json=endTime" json:"end_time,omitempty"`
-	Latency                 *int64     `protobuf:"varint,8,req,name=latency" json:"latency,omitempty"`
-	Mcycles                 *int64     `protobuf:"varint,9,req,name=mcycles" json:"mcycles,omitempty"`
-	Method                  *string    `protobuf:"bytes,10,req,name=method" json:"method,omitempty"`
-	Resource                *string    `protobuf:"bytes,11,req,name=resource" json:"resource,omitempty"`
-	HttpVersion             *string    `protobuf:"bytes,12,req,name=http_version,json=httpVersion" json:"http_version,omitempty"`
-	Status                  *int32     `protobuf:"varint,13,req,name=status" json:"status,omitempty"`
-	ResponseSize            *int64     `protobuf:"varint,14,req,name=response_size,json=responseSize" json:"response_size,omitempty"`
-	Referrer                *string    `protobuf:"bytes,15,opt,name=referrer" json:"referrer,omitempty"`
-	UserAgent               *string    `protobuf:"bytes,16,opt,name=user_agent,json=userAgent" json:"user_agent,omitempty"`
-	UrlMapEntry             *string    `protobuf:"bytes,17,req,name=url_map_entry,json=urlMapEntry" json:"url_map_entry,omitempty"`
-	Combined                *string    `protobuf:"bytes,18,req,name=combined" json:"combined,omitempty"`
-	ApiMcycles              *int64     `protobuf:"varint,19,opt,name=api_mcycles,json=apiMcycles" json:"api_mcycles,omitempty"`
-	Host                    *string    `protobuf:"bytes,20,opt,name=host" json:"host,omitempty"`
-	Cost                    *float64   `protobuf:"fixed64,21,opt,name=cost" json:"cost,omitempty"`
-	TaskQueueName           *string    `protobuf:"bytes,22,opt,name=task_queue_name,json=taskQueueName" json:"task_queue_name,omitempty"`
-	TaskName                *string    `protobuf:"bytes,23,opt,name=task_name,json=taskName" json:"task_name,omitempty"`
-	WasLoadingRequest       *bool      `protobuf:"varint,24,opt,name=was_loading_request,json=wasLoadingRequest" json:"was_loading_request,omitempty"`
-	PendingTime             *int64     `protobuf:"varint,25,opt,name=pending_time,json=pendingTime" json:"pending_time,omitempty"`
-	ReplicaIndex            *int32     `protobuf:"varint,26,opt,name=replica_index,json=replicaIndex,def=-1" json:"replica_index,omitempty"`
-	Finished                *bool      `protobuf:"varint,27,opt,name=finished,def=1" json:"finished,omitempty"`
-	CloneKey                []byte     `protobuf:"bytes,28,opt,name=clone_key,json=cloneKey" json:"clone_key,omitempty"`
-	Line                    []*LogLine `protobuf:"bytes,29,rep,name=line" json:"line,omitempty"`
-	LinesIncomplete         *bool      `protobuf:"varint,36,opt,name=lines_incomplete,json=linesIncomplete" json:"lines_incomplete,omitempty"`
-	AppEngineRelease        []byte     `protobuf:"bytes,38,opt,name=app_engine_release,json=appEngineRelease" json:"app_engine_release,omitempty"`
-	ExitReason              *int32     `protobuf:"varint,30,opt,name=exit_reason,json=exitReason" json:"exit_reason,omitempty"`
-	WasThrottledForTime     *bool      `protobuf:"varint,31,opt,name=was_throttled_for_time,json=wasThrottledForTime" json:"was_throttled_for_time,omitempty"`
-	WasThrottledForRequests *bool      `protobuf:"varint,32,opt,name=was_throttled_for_requests,json=wasThrottledForRequests" json:"was_throttled_for_requests,omitempty"`
-	ThrottledTime           *int64     `protobuf:"varint,33,opt,name=throttled_time,json=throttledTime" json:"throttled_time,omitempty"`
-	ServerName              []byte     `protobuf:"bytes,34,opt,name=server_name,json=serverName" json:"server_name,omitempty"`
-	XXX_NoUnkeyedLiteral    struct{}   `json:"-"`
-	XXX_unrecognized        []byte     `json:"-"`
-	XXX_sizecache           int32      `json:"-"`
-}
-
-func (m *RequestLog) Reset()         { *m = RequestLog{} }
-func (m *RequestLog) String() string { return proto.CompactTextString(m) }
-func (*RequestLog) ProtoMessage()    {}
-func (*RequestLog) Descriptor() ([]byte, []int) {
-	return fileDescriptor_log_service_f054fd4b5012319d, []int{7}
-}
-func (m *RequestLog) XXX_Unmarshal(b []byte) error {
-	return xxx_messageInfo_RequestLog.Unmarshal(m, b)
-}
-func (m *RequestLog) XXX_Marshal(b []byte, deterministic bool) ([]byte, error) {
-	return xxx_messageInfo_RequestLog.Marshal(b, m, deterministic)
-}
-func (dst *RequestLog) XXX_Merge(src proto.Message) {
-	xxx_messageInfo_RequestLog.Merge(dst, src)
-}
-func (m *RequestLog) XXX_Size() int {
-	return xxx_messageInfo_RequestLog.Size(m)
-}
-func (m *RequestLog) XXX_DiscardUnknown() {
-	xxx_messageInfo_RequestLog.DiscardUnknown(m)
-}
-
-var xxx_messageInfo_RequestLog proto.InternalMessageInfo
-
-const Default_RequestLog_ModuleId string = "default"
-const Default_RequestLog_ReplicaIndex int32 = -1
-const Default_RequestLog_Finished bool = true
-
-func (m *RequestLog) GetAppId() string {
-	if m != nil && m.AppId != nil {
-		return *m.AppId
-	}
-	return ""
-}
-
-func (m *RequestLog) GetModuleId() string {
-	if m != nil && m.ModuleId != nil {
-		return *m.ModuleId
-	}
-	return Default_RequestLog_ModuleId
-}
-
-func (m *RequestLog) GetVersionId() string {
-	if m != nil && m.VersionId != nil {
-		return *m.VersionId
-	}
-	return ""
-}
-
-func (m *RequestLog) GetRequestId() []byte {
-	if m != nil {
-		return m.RequestId
-	}
-	return nil
-}
-
-func (m *RequestLog) GetOffset() *LogOffset {
-	if m != nil {
-		return m.Offset
-	}
-	return nil
-}
-
-func (m *RequestLog) GetIp() string {
-	if m != nil && m.Ip != nil {
-		return *m.Ip
-	}
-	return ""
-}
-
-func (m *RequestLog) GetNickname() string {
-	if m != nil && m.Nickname != nil {
-		return *m.Nickname
-	}
-	return ""
-}
-
-func (m *RequestLog) GetStartTime() int64 {
-	if m != nil && m.StartTime != nil {
-		return *m.StartTime
-	}
-	return 0
-}
-
-func (m *RequestLog) GetEndTime() int64 {
-	if m != nil && m.EndTime != nil {
-		return *m.EndTime
-	}
-	return 0
-}
-
-func (m *RequestLog) GetLatency() int64 {
-	if m != nil && m.Latency != nil {
-		return *m.Latency
-	}
-	return 0
-}
-
-func (m *RequestLog) GetMcycles() int64 {
-	if m != nil && m.Mcycles != nil {
-		return *m.Mcycles
-	}
-	return 0
-}
-
-func (m *RequestLog) GetMethod() string {
-	if m != nil && m.Method != nil {
-		return *m.Method
-	}
-	return ""
-}
-
-func (m *RequestLog) GetResource() string {
-	if m != nil && m.Resource != nil {
-		return *m.Resource
-	}
-	return ""
-}
-
-func (m *RequestLog) GetHttpVersion() string {
-	if m != nil && m.HttpVersion != nil {
-		return *m.HttpVersion
-	}
-	return ""
-}
-
-func (m *RequestLog) GetStatus() int32 {
-	if m != nil && m.Status != nil {
-		return *m.Status
-	}
-	return 0
-}
-
-func (m *RequestLog) GetResponseSize() int64 {
-	if m != nil && m.ResponseSize != nil {
-		return *m.ResponseSize
-	}
-	return 0
-}
-
-func (m *RequestLog) GetReferrer() string {
-	if m != nil && m.Referrer != nil {
-		return *m.Referrer
-	}
-	return ""
-}
-
-func (m *RequestLog) GetUserAgent() string {
-	if m != nil && m.UserAgent != nil {
-		return *m.UserAgent
-	}
-	return ""
-}
-
-func (m *RequestLog) GetUrlMapEntry() string {
-	if m != nil && m.UrlMapEntry != nil {
-		return *m.UrlMapEntry
-	}
-	return ""
-}
-
-func (m *RequestLog) GetCombined() string {
-	if m != nil && m.Combined != nil {
-		return *m.Combined
-	}
-	return ""
-}
-
-func (m *RequestLog) GetApiMcycles() int64 {
-	if m != nil && m.ApiMcycles != nil {
-		return *m.ApiMcycles
-	}
-	return 0
-}
-
-func (m *RequestLog) GetHost() string {
-	if m != nil && m.Host != nil {
-		return *m.Host
-	}
-	return ""
-}
-
-func (m *RequestLog) GetCost() float64 {
-	if m != nil && m.Cost != nil {
-		return *m.Cost
-	}
-	return 0
-}
-
-func (m *RequestLog) GetTaskQueueName() string {
-	if m != nil && m.TaskQueueName != nil {
-		return *m.TaskQueueName
-	}
-	return ""
-}
-
-func (m *RequestLog) GetTaskName() string {
-	if m != nil && m.TaskName != nil {
-		return *m.TaskName
-	}
-	return ""
-}
-
-func (m *RequestLog) GetWasLoadingRequest() bool {
-	if m != nil && m.WasLoadingRequest != nil {
-		return *m.WasLoadingRequest
-	}
-	return false
-}
-
-func (m *RequestLog) GetPendingTime() int64 {
-	if m != nil && m.PendingTime != nil {
-		return *m.PendingTime
-	}
-	return 0
-}
-
-func (m *RequestLog) GetReplicaIndex() int32 {
-	if m != nil && m.ReplicaIndex != nil {
-		return *m.ReplicaIndex
-	}
-	return Default_RequestLog_ReplicaIndex
-}
-
-func (m *RequestLog) GetFinished() bool {
-	if m != nil && m.Finished != nil {
-		return *m.Finished
-	}
-	return Default_RequestLog_Finished
-}
-
-func (m *RequestLog) GetCloneKey() []byte {
-	if m != nil {
-		return m.CloneKey
-	}
-	return nil
-}
-
-func (m *RequestLog) GetLine() []*LogLine {
-	if m != nil {
-		return m.Line
-	}
-	return nil
-}
-
-func (m *RequestLog) GetLinesIncomplete() bool {
-	if m != nil && m.LinesIncomplete != nil {
-		return *m.LinesIncomplete
-	}
-	return false
-}
-
-func (m *RequestLog) GetAppEngineRelease() []byte {
-	if m != nil {
-		return m.AppEngineRelease
-	}
-	return nil
-}
-
-func (m *RequestLog) GetExitReason() int32 {
-	if m != nil && m.ExitReason != nil {
-		return *m.ExitReason
-	}
-	return 0
-}
-
-func (m *RequestLog) GetWasThrottledForTime() bool {
-	if m != nil && m.WasThrottledForTime != nil {
-		return *m.WasThrottledForTime
-	}
-	return false
-}
-
-func (m *RequestLog) GetWasThrottledForRequests() bool {
-	if m != nil && m.WasThrottledForRequests != nil {
-		return *m.WasThrottledForRequests
-	}
-	return false
-}
-
-func (m *RequestLog) GetThrottledTime() int64 {
-	if m != nil && m.ThrottledTime != nil {
-		return *m.ThrottledTime
-	}
-	return 0
-}
-
-func (m *RequestLog) GetServerName() []byte {
-	if m != nil {
-		return m.ServerName
-	}
-	return nil
-}
-
-type LogModuleVersion struct {
-	ModuleId             *string  `protobuf:"bytes,1,opt,name=module_id,json=moduleId,def=default" json:"module_id,omitempty"`
-	VersionId            *string  `protobuf:"bytes,2,opt,name=version_id,json=versionId" json:"version_id,omitempty"`
-	XXX_NoUnkeyedLiteral struct{} `json:"-"`
-	XXX_unrecognized     []byte   `json:"-"`
-	XXX_sizecache        int32    `json:"-"`
-}
-
-func (m *LogModuleVersion) Reset()         { *m = LogModuleVersion{} }
-func (m *LogModuleVersion) String() string { return proto.CompactTextString(m) }
-func (*LogModuleVersion) ProtoMessage()    {}
-func (*LogModuleVersion) Descriptor() ([]byte, []int) {
-	return fileDescriptor_log_service_f054fd4b5012319d, []int{8}
-}
-func (m *LogModuleVersion) XXX_Unmarshal(b []byte) error {
-	return xxx_messageInfo_LogModuleVersion.Unmarshal(m, b)
-}
-func (m *LogModuleVersion) XXX_Marshal(b []byte, deterministic bool) ([]byte, error) {
-	return xxx_messageInfo_LogModuleVersion.Marshal(b, m, deterministic)
-}
-func (dst *LogModuleVersion) XXX_Merge(src proto.Message) {
-	xxx_messageInfo_LogModuleVersion.Merge(dst, src)
-}
-func (m *LogModuleVersion) XXX_Size() int {
-	return xxx_messageInfo_LogModuleVersion.Size(m)
-}
-func (m *LogModuleVersion) XXX_DiscardUnknown() {
-	xxx_messageInfo_LogModuleVersion.DiscardUnknown(m)
-}
-
-var xxx_messageInfo_LogModuleVersion proto.InternalMessageInfo
-
-const Default_LogModuleVersion_ModuleId string = "default"
-
-func (m *LogModuleVersion) GetModuleId() string {
-	if m != nil && m.ModuleId != nil {
-		return *m.ModuleId
-	}
-	return Default_LogModuleVersion_ModuleId
-}
-
-func (m *LogModuleVersion) GetVersionId() string {
-	if m != nil && m.VersionId != nil {
-		return *m.VersionId
-	}
-	return ""
-}
-
-type LogReadRequest struct {
-	AppId                *string             `protobuf:"bytes,1,req,name=app_id,json=appId" json:"app_id,omitempty"`
-	VersionId            []string            `protobuf:"bytes,2,rep,name=version_id,json=versionId" json:"version_id,omitempty"`
-	ModuleVersion        []*LogModuleVersion `protobuf:"bytes,19,rep,name=module_version,json=moduleVersion" json:"module_version,omitempty"`
-	StartTime            *int64              `protobuf:"varint,3,opt,name=start_time,json=startTime" json:"start_time,omitempty"`
-	EndTime              *int64              `protobuf:"varint,4,opt,name=end_time,json=endTime" json:"end_time,omitempty"`
-	Offset               *LogOffset          `protobuf:"bytes,5,opt,name=offset" json:"offset,omitempty"`
-	RequestId            [][]byte            `protobuf:"bytes,6,rep,name=request_id,json=requestId" json:"request_id,omitempty"`
-	MinimumLogLevel      *int32              `protobuf:"varint,7,opt,name=minimum_log_level,json=minimumLogLevel" json:"minimum_log_level,omitempty"`
-	IncludeIncomplete    *bool               `protobuf:"varint,8,opt,name=include_incomplete,json=includeIncomplete" json:"include_incomplete,omitempty"`
-	Count                *int64              `protobuf:"varint,9,opt,name=count" json:"count,omitempty"`
-	CombinedLogRegex     *string             `protobuf:"bytes,14,opt,name=combined_log_regex,json=combinedLogRegex" json:"combined_log_regex,omitempty"`
-	HostRegex            *string             `protobuf:"bytes,15,opt,name=host_regex,json=hostRegex" json:"host_regex,omitempty"`
-	ReplicaIndex         *int32              `protobuf:"varint,16,opt,name=replica_index,json=replicaIndex" json:"replica_index,omitempty"`
-	IncludeAppLogs       *bool               `protobuf:"varint,10,opt,name=include_app_logs,json=includeAppLogs" json:"include_app_logs,omitempty"`
-	AppLogsPerRequest    *int32              `protobuf:"varint,17,opt,name=app_logs_per_request,json=appLogsPerRequest" json:"app_logs_per_request,omitempty"`
-	IncludeHost          *bool               `protobuf:"varint,11,opt,name=include_host,json=includeHost" json:"include_host,omitempty"`
-	IncludeAll           *bool               `protobuf:"varint,12,opt,name=include_all,json=includeAll" json:"include_all,omitempty"`
-	CacheIterator        *bool               `protobuf:"varint,13,opt,name=cache_iterator,json=cacheIterator" json:"cache_iterator,omitempty"`
-	NumShards            *int32              `protobuf:"varint,18,opt,name=num_shards,json=numShards" json:"num_shards,omitempty"`
-	XXX_NoUnkeyedLiteral struct{}            `json:"-"`
-	XXX_unrecognized     []byte              `json:"-"`
-	XXX_sizecache        int32               `json:"-"`
-}
-
-func (m *LogReadRequest) Reset()         { *m = LogReadRequest{} }
-func (m *LogReadRequest) String() string { return proto.CompactTextString(m) }
-func (*LogReadRequest) ProtoMessage()    {}
-func (*LogReadRequest) Descriptor() ([]byte, []int) {
-	return fileDescriptor_log_service_f054fd4b5012319d, []int{9}
-}
-func (m *LogReadRequest) XXX_Unmarshal(b []byte) error {
-	return xxx_messageInfo_LogReadRequest.Unmarshal(m, b)
-}
-func (m *LogReadRequest) XXX_Marshal(b []byte, deterministic bool) ([]byte, error) {
-	return xxx_messageInfo_LogReadRequest.Marshal(b, m, deterministic)
-}
-func (dst *LogReadRequest) XXX_Merge(src proto.Message) {
-	xxx_messageInfo_LogReadRequest.Merge(dst, src)
-}
-func (m *LogReadRequest) XXX_Size() int {
-	return xxx_messageInfo_LogReadRequest.Size(m)
-}
-func (m *LogReadRequest) XXX_DiscardUnknown() {
-	xxx_messageInfo_LogReadRequest.DiscardUnknown(m)
-}
-
-var xxx_messageInfo_LogReadRequest proto.InternalMessageInfo
-
-func (m *LogReadRequest) GetAppId() string {
-	if m != nil && m.AppId != nil {
-		return *m.AppId
-	}
-	return ""
-}
-
-func (m *LogReadRequest) GetVersionId() []string {
-	if m != nil {
-		return m.VersionId
-	}
-	return nil
-}
-
-func (m *LogReadRequest) GetModuleVersion() []*LogModuleVersion {
-	if m != nil {
-		return m.ModuleVersion
-	}
-	return nil
-}
-
-func (m *LogReadRequest) GetStartTime() int64 {
-	if m != nil && m.StartTime != nil {
-		return *m.StartTime
-	}
-	return 0
-}
-
-func (m *LogReadRequest) GetEndTime() int64 {
-	if m != nil && m.EndTime != nil {
-		return *m.EndTime
-	}
-	return 0
-}
-
-func (m *LogReadRequest) GetOffset() *LogOffset {
-	if m != nil {
-		return m.Offset
-	}
-	return nil
-}
-
-func (m *LogReadRequest) GetRequestId() [][]byte {
-	if m != nil {
-		return m.RequestId
-	}
-	return nil
-}
-
-func (m *LogReadRequest) GetMinimumLogLevel() int32 {
-	if m != nil && m.MinimumLogLevel != nil {
-		return *m.MinimumLogLevel
-	}
-	return 0
-}
-
-func (m *LogReadRequest) GetIncludeIncomplete() bool {
-	if m != nil && m.IncludeIncomplete != nil {
-		return *m.IncludeIncomplete
-	}
-	return false
-}
-
-func (m *LogReadRequest) GetCount() int64 {
-	if m != nil && m.Count != nil {
-		return *m.Count
-	}
-	return 0
-}
-
-func (m *LogReadRequest) GetCombinedLogRegex() string {
-	if m != nil && m.CombinedLogRegex != nil {
-		return *m.CombinedLogRegex
-	}
-	return ""
-}
-
-func (m *LogReadRequest) GetHostRegex() string {
-	if m != nil && m.HostRegex != nil {
-		return *m.HostRegex
-	}
-	return ""
-}
-
-func (m *LogReadRequest) GetReplicaIndex() int32 {
-	if m != nil && m.ReplicaIndex != nil {
-		return *m.ReplicaIndex
-	}
-	return 0
-}
-
-func (m *LogReadRequest) GetIncludeAppLogs() bool {
-	if m != nil && m.IncludeAppLogs != nil {
-		return *m.IncludeAppLogs
-	}
-	return false
-}
-
-func (m *LogReadRequest) GetAppLogsPerRequest() int32 {
-	if m != nil && m.AppLogsPerRequest != nil {
-		return *m.AppLogsPerRequest
-	}
-	return 0
-}
-
-func (m *LogReadRequest) GetIncludeHost() bool {
-	if m != nil && m.IncludeHost != nil {
-		return *m.IncludeHost
-	}
-	return false
-}
-
-func (m *LogReadRequest) GetIncludeAll() bool {
-	if m != nil && m.IncludeAll != nil {
-		return *m.IncludeAll
-	}
-	return false
-}
-
-func (m *LogReadRequest) GetCacheIterator() bool {
-	if m != nil && m.CacheIterator != nil {
-		return *m.CacheIterator
-	}
-	return false
-}
-
-func (m *LogReadRequest) GetNumShards() int32 {
-	if m != nil && m.NumShards != nil {
-		return *m.NumShards
-	}
-	return 0
-}
-
-type LogReadResponse struct {
-	Log                  []*RequestLog `protobuf:"bytes,1,rep,name=log" json:"log,omitempty"`
-	Offset               *LogOffset    `protobuf:"bytes,2,opt,name=offset" json:"offset,omitempty"`
-	LastEndTime          *int64        `protobuf:"varint,3,opt,name=last_end_time,json=lastEndTime" json:"last_end_time,omitempty"`
-	XXX_NoUnkeyedLiteral struct{}      `json:"-"`
-	XXX_unrecognized     []byte        `json:"-"`
-	XXX_sizecache        int32         `json:"-"`
-}
-
-func (m *LogReadResponse) Reset()         { *m = LogReadResponse{} }
-func (m *LogReadResponse) String() string { return proto.CompactTextString(m) }
-func (*LogReadResponse) ProtoMessage()    {}
-func (*LogReadResponse) Descriptor() ([]byte, []int) {
-	return fileDescriptor_log_service_f054fd4b5012319d, []int{10}
-}
-func (m *LogReadResponse) XXX_Unmarshal(b []byte) error {
-	return xxx_messageInfo_LogReadResponse.Unmarshal(m, b)
-}
-func (m *LogReadResponse) XXX_Marshal(b []byte, deterministic bool) ([]byte, error) {
-	return xxx_messageInfo_LogReadResponse.Marshal(b, m, deterministic)
-}
-func (dst *LogReadResponse) XXX_Merge(src proto.Message) {
-	xxx_messageInfo_LogReadResponse.Merge(dst, src)
-}
-func (m *LogReadResponse) XXX_Size() int {
-	return xxx_messageInfo_LogReadResponse.Size(m)
-}
-func (m *LogReadResponse) XXX_DiscardUnknown() {
-	xxx_messageInfo_LogReadResponse.DiscardUnknown(m)
-}
-
-var xxx_messageInfo_LogReadResponse proto.InternalMessageInfo
-
-func (m *LogReadResponse) GetLog() []*RequestLog {
-	if m != nil {
-		return m.Log
-	}
-	return nil
-}
-
-func (m *LogReadResponse) GetOffset() *LogOffset {
-	if m != nil {
-		return m.Offset
-	}
-	return nil
-}
-
-func (m *LogReadResponse) GetLastEndTime() int64 {
-	if m != nil && m.LastEndTime != nil {
-		return *m.LastEndTime
-	}
-	return 0
-}
-
-type LogUsageRecord struct {
-	VersionId            *string  `protobuf:"bytes,1,opt,name=version_id,json=versionId" json:"version_id,omitempty"`
-	StartTime            *int32   `protobuf:"varint,2,opt,name=start_time,json=startTime" json:"start_time,omitempty"`
-	EndTime              *int32   `protobuf:"varint,3,opt,name=end_time,json=endTime" json:"end_time,omitempty"`
-	Count                *int64   `protobuf:"varint,4,opt,name=count" json:"count,omitempty"`
-	TotalSize            *int64   `protobuf:"varint,5,opt,name=total_size,json=totalSize" json:"total_size,omitempty"`
-	Records              *int32   `protobuf:"varint,6,opt,name=records" json:"records,omitempty"`
-	XXX_NoUnkeyedLiteral struct{} `json:"-"`
-	XXX_unrecognized     []byte   `json:"-"`
-	XXX_sizecache        int32    `json:"-"`
-}
-
-func (m *LogUsageRecord) Reset()         { *m = LogUsageRecord{} }
-func (m *LogUsageRecord) String() string { return proto.CompactTextString(m) }
-func (*LogUsageRecord) ProtoMessage()    {}
-func (*LogUsageRecord) Descriptor() ([]byte, []int) {
-	return fileDescriptor_log_service_f054fd4b5012319d, []int{11}
-}
-func (m *LogUsageRecord) XXX_Unmarshal(b []byte) error {
-	return xxx_messageInfo_LogUsageRecord.Unmarshal(m, b)
-}
-func (m *LogUsageRecord) XXX_Marshal(b []byte, deterministic bool) ([]byte, error) {
-	return xxx_messageInfo_LogUsageRecord.Marshal(b, m, deterministic)
-}
-func (dst *LogUsageRecord) XXX_Merge(src proto.Message) {
-	xxx_messageInfo_LogUsageRecord.Merge(dst, src)
-}
-func (m *LogUsageRecord) XXX_Size() int {
-	return xxx_messageInfo_LogUsageRecord.Size(m)
-}
-func (m *LogUsageRecord) XXX_DiscardUnknown() {
-	xxx_messageInfo_LogUsageRecord.DiscardUnknown(m)
-}
-
-var xxx_messageInfo_LogUsageRecord proto.InternalMessageInfo
-
-func (m *LogUsageRecord) GetVersionId() string {
-	if m != nil && m.VersionId != nil {
-		return *m.VersionId
-	}
-	return ""
-}
-
-func (m *LogUsageRecord) GetStartTime() int32 {
-	if m != nil && m.StartTime != nil {
-		return *m.StartTime
-	}
-	return 0
-}
-
-func (m *LogUsageRecord) GetEndTime() int32 {
-	if m != nil && m.EndTime != nil {
-		return *m.EndTime
-	}
-	return 0
-}
-
-func (m *LogUsageRecord) GetCount() int64 {
-	if m != nil && m.Count != nil {
-		return *m.Count
-	}
-	return 0
-}
-
-func (m *LogUsageRecord) GetTotalSize() int64 {
-	if m != nil && m.TotalSize != nil {
-		return *m.TotalSize
-	}
-	return 0
-}
-
-func (m *LogUsageRecord) GetRecords() int32 {
-	if m != nil && m.Records != nil {
-		return *m.Records
-	}
-	return 0
-}
-
-type LogUsageRequest struct {
-	AppId                *string  `protobuf:"bytes,1,req,name=app_id,json=appId" json:"app_id,omitempty"`
-	VersionId            []string `protobuf:"bytes,2,rep,name=version_id,json=versionId" json:"version_id,omitempty"`
-	StartTime            *int32   `protobuf:"varint,3,opt,name=start_time,json=startTime" json:"start_time,omitempty"`
-	EndTime              *int32   `protobuf:"varint,4,opt,name=end_time,json=endTime" json:"end_time,omitempty"`
-	ResolutionHours      *uint32  `protobuf:"varint,5,opt,name=resolution_hours,json=resolutionHours,def=1" json:"resolution_hours,omitempty"`
-	CombineVersions      *bool    `protobuf:"varint,6,opt,name=combine_versions,json=combineVersions" json:"combine_versions,omitempty"`
-	UsageVersion         *int32   `protobuf:"varint,7,opt,name=usage_version,json=usageVersion" json:"usage_version,omitempty"`
-	VersionsOnly         *bool    `protobuf:"varint,8,opt,name=versions_only,json=versionsOnly" json:"versions_only,omitempty"`
-	XXX_NoUnkeyedLiteral struct{} `json:"-"`
-	XXX_unrecognized     []byte   `json:"-"`
-	XXX_sizecache        int32    `json:"-"`
-}
-
-func (m *LogUsageRequest) Reset()         { *m = LogUsageRequest{} }
-func (m *LogUsageRequest) String() string { return proto.CompactTextString(m) }
-func (*LogUsageRequest) ProtoMessage()    {}
-func (*LogUsageRequest) Descriptor() ([]byte, []int) {
-	return fileDescriptor_log_service_f054fd4b5012319d, []int{12}
-}
-func (m *LogUsageRequest) XXX_Unmarshal(b []byte) error {
-	return xxx_messageInfo_LogUsageRequest.Unmarshal(m, b)
-}
-func (m *LogUsageRequest) XXX_Marshal(b []byte, deterministic bool) ([]byte, error) {
-	return xxx_messageInfo_LogUsageRequest.Marshal(b, m, deterministic)
-}
-func (dst *LogUsageRequest) XXX_Merge(src proto.Message) {
-	xxx_messageInfo_LogUsageRequest.Merge(dst, src)
-}
-func (m *LogUsageRequest) XXX_Size() int {
-	return xxx_messageInfo_LogUsageRequest.Size(m)
-}
-func (m *LogUsageRequest) XXX_DiscardUnknown() {
-	xxx_messageInfo_LogUsageRequest.DiscardUnknown(m)
-}
-
-var xxx_messageInfo_LogUsageRequest proto.InternalMessageInfo
-
-const Default_LogUsageRequest_ResolutionHours uint32 = 1
-
-func (m *LogUsageRequest) GetAppId() string {
-	if m != nil && m.AppId != nil {
-		return *m.AppId
-	}
-	return ""
-}
-
-func (m *LogUsageRequest) GetVersionId() []string {
-	if m != nil {
-		return m.VersionId
-	}
-	return nil
-}
-
-func (m *LogUsageRequest) GetStartTime() int32 {
-	if m != nil && m.StartTime != nil {
-		return *m.StartTime
-	}
-	return 0
-}
-
-func (m *LogUsageRequest) GetEndTime() int32 {
-	if m != nil && m.EndTime != nil {
-		return *m.EndTime
-	}
-	return 0
-}
-
-func (m *LogUsageRequest) GetResolutionHours() uint32 {
-	if m != nil && m.ResolutionHours != nil {
-		return *m.ResolutionHours
-	}
-	return Default_LogUsageRequest_ResolutionHours
-}
-
-func (m *LogUsageRequest) GetCombineVersions() bool {
-	if m != nil && m.CombineVersions != nil {
-		return *m.CombineVersions
-	}
-	return false
-}
-
-func (m *LogUsageRequest) GetUsageVersion() int32 {
-	if m != nil && m.UsageVersion != nil {
-		return *m.UsageVersion
-	}
-	return 0
-}
-
-func (m *LogUsageRequest) GetVersionsOnly() bool {
-	if m != nil && m.VersionsOnly != nil {
-		return *m.VersionsOnly
-	}
-	return false
-}
-
-type LogUsageResponse struct {
-	Usage                []*LogUsageRecord `protobuf:"bytes,1,rep,name=usage" json:"usage,omitempty"`
-	Summary              *LogUsageRecord   `protobuf:"bytes,2,opt,name=summary" json:"summary,omitempty"`
-	XXX_NoUnkeyedLiteral struct{}          `json:"-"`
-	XXX_unrecognized     []byte            `json:"-"`
-	XXX_sizecache        int32             `json:"-"`
-}
-
-func (m *LogUsageResponse) Reset()         { *m = LogUsageResponse{} }
-func (m *LogUsageResponse) String() string { return proto.CompactTextString(m) }
-func (*LogUsageResponse) ProtoMessage()    {}
-func (*LogUsageResponse) Descriptor() ([]byte, []int) {
-	return fileDescriptor_log_service_f054fd4b5012319d, []int{13}
-}
-func (m *LogUsageResponse) XXX_Unmarshal(b []byte) error {
-	return xxx_messageInfo_LogUsageResponse.Unmarshal(m, b)
-}
-func (m *LogUsageResponse) XXX_Marshal(b []byte, deterministic bool) ([]byte, error) {
-	return xxx_messageInfo_LogUsageResponse.Marshal(b, m, deterministic)
-}
-func (dst *LogUsageResponse) XXX_Merge(src proto.Message) {
-	xxx_messageInfo_LogUsageResponse.Merge(dst, src)
-}
-func (m *LogUsageResponse) XXX_Size() int {
-	return xxx_messageInfo_LogUsageResponse.Size(m)
-}
-func (m *LogUsageResponse) XXX_DiscardUnknown() {
-	xxx_messageInfo_LogUsageResponse.DiscardUnknown(m)
-}
-
-var xxx_messageInfo_LogUsageResponse proto.InternalMessageInfo
-
-func (m *LogUsageResponse) GetUsage() []*LogUsageRecord {
-	if m != nil {
-		return m.Usage
-	}
-	return nil
-}
-
-func (m *LogUsageResponse) GetSummary() *LogUsageRecord {
-	if m != nil {
-		return m.Summary
-	}
-	return nil
-}
-
-func init() {
-	proto.RegisterType((*LogServiceError)(nil), "appengine.LogServiceError")
-	proto.RegisterType((*UserAppLogLine)(nil), "appengine.UserAppLogLine")
-	proto.RegisterType((*UserAppLogGroup)(nil), "appengine.UserAppLogGroup")
-	proto.RegisterType((*FlushRequest)(nil), "appengine.FlushRequest")
-	proto.RegisterType((*SetStatusRequest)(nil), "appengine.SetStatusRequest")
-	proto.RegisterType((*LogOffset)(nil), "appengine.LogOffset")
-	proto.RegisterType((*LogLine)(nil), "appengine.LogLine")
-	proto.RegisterType((*RequestLog)(nil), "appengine.RequestLog")
-	proto.RegisterType((*LogModuleVersion)(nil), "appengine.LogModuleVersion")
-	proto.RegisterType((*LogReadRequest)(nil), "appengine.LogReadRequest")
-	proto.RegisterType((*LogReadResponse)(nil), "appengine.LogReadResponse")
-	proto.RegisterType((*LogUsageRecord)(nil), "appengine.LogUsageRecord")
-	proto.RegisterType((*LogUsageRequest)(nil), "appengine.LogUsageRequest")
-	proto.RegisterType((*LogUsageResponse)(nil), "appengine.LogUsageResponse")
-}
-
-func init() {
-	proto.RegisterFile("google.golang.org/appengine/internal/log/log_service.proto", fileDescriptor_log_service_f054fd4b5012319d)
-}
-
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-	0x00,
-}
diff --git a/vendor/google.golang.org/appengine/internal/main.go b/vendor/google.golang.org/appengine/internal/main.go
deleted file mode 100644
index 49036163c..000000000
--- a/vendor/google.golang.org/appengine/internal/main.go
+++ /dev/null
@@ -1,15 +0,0 @@
-// Copyright 2011 Google Inc. All rights reserved.
-// Use of this source code is governed by the Apache 2.0
-// license that can be found in the LICENSE file.
-
-// +build appengine
-
-package internal
-
-import (
-	"appengine_internal"
-)
-
-func Main() {
-	appengine_internal.Main()
-}
diff --git a/vendor/google.golang.org/appengine/internal/main_vm.go b/vendor/google.golang.org/appengine/internal/main_vm.go
deleted file mode 100644
index 822e784a4..000000000
--- a/vendor/google.golang.org/appengine/internal/main_vm.go
+++ /dev/null
@@ -1,48 +0,0 @@
-// Copyright 2011 Google Inc. All rights reserved.
-// Use of this source code is governed by the Apache 2.0
-// license that can be found in the LICENSE file.
-
-// +build !appengine
-
-package internal
-
-import (
-	"io"
-	"log"
-	"net/http"
-	"net/url"
-	"os"
-)
-
-func Main() {
-	installHealthChecker(http.DefaultServeMux)
-
-	port := "8080"
-	if s := os.Getenv("PORT"); s != "" {
-		port = s
-	}
-
-	host := ""
-	if IsDevAppServer() {
-		host = "127.0.0.1"
-	}
-	if err := http.ListenAndServe(host+":"+port, http.HandlerFunc(handleHTTP)); err != nil {
-		log.Fatalf("http.ListenAndServe: %v", err)
-	}
-}
-
-func installHealthChecker(mux *http.ServeMux) {
-	// If no health check handler has been installed by this point, add a trivial one.
-	const healthPath = "/_ah/health"
-	hreq := &http.Request{
-		Method: "GET",
-		URL: &url.URL{
-			Path: healthPath,
-		},
-	}
-	if _, pat := mux.Handler(hreq); pat != healthPath {
-		mux.HandleFunc(healthPath, func(w http.ResponseWriter, r *http.Request) {
-			io.WriteString(w, "ok")
-		})
-	}
-}
diff --git a/vendor/google.golang.org/appengine/internal/metadata.go b/vendor/google.golang.org/appengine/internal/metadata.go
deleted file mode 100644
index c4ba63bb4..000000000
--- a/vendor/google.golang.org/appengine/internal/metadata.go
+++ /dev/null
@@ -1,60 +0,0 @@
-// Copyright 2014 Google Inc. All rights reserved.
-// Use of this source code is governed by the Apache 2.0
-// license that can be found in the LICENSE file.
-
-package internal
-
-// This file has code for accessing metadata.
-//
-// References:
-//	https://cloud.google.com/compute/docs/metadata
-
-import (
-	"fmt"
-	"io/ioutil"
-	"net/http"
-	"net/url"
-)
-
-const (
-	metadataHost = "metadata"
-	metadataPath = "/computeMetadata/v1/"
-)
-
-var (
-	metadataRequestHeaders = http.Header{
-		"Metadata-Flavor": []string{"Google"},
-	}
-)
-
-// TODO(dsymonds): Do we need to support default values, like Python?
-func mustGetMetadata(key string) []byte {
-	b, err := getMetadata(key)
-	if err != nil {
-		panic(fmt.Sprintf("Metadata fetch failed for '%s': %v", key, err))
-	}
-	return b
-}
-
-func getMetadata(key string) ([]byte, error) {
-	// TODO(dsymonds): May need to use url.Parse to support keys with query args.
-	req := &http.Request{
-		Method: "GET",
-		URL: &url.URL{
-			Scheme: "http",
-			Host:   metadataHost,
-			Path:   metadataPath + key,
-		},
-		Header: metadataRequestHeaders,
-		Host:   metadataHost,
-	}
-	resp, err := http.DefaultClient.Do(req)
-	if err != nil {
-		return nil, err
-	}
-	defer resp.Body.Close()
-	if resp.StatusCode != 200 {
-		return nil, fmt.Errorf("metadata server returned HTTP %d", resp.StatusCode)
-	}
-	return ioutil.ReadAll(resp.Body)
-}
diff --git a/vendor/google.golang.org/appengine/internal/modules/modules_service.pb.go b/vendor/google.golang.org/appengine/internal/modules/modules_service.pb.go
deleted file mode 100644
index ddfc0c04a..000000000
--- a/vendor/google.golang.org/appengine/internal/modules/modules_service.pb.go
+++ /dev/null
@@ -1,786 +0,0 @@
-// Code generated by protoc-gen-go. DO NOT EDIT.
-// source: google.golang.org/appengine/internal/modules/modules_service.proto
-
-package modules
-
-import proto "github.com/golang/protobuf/proto"
-import fmt "fmt"
-import math "math"
-
-// Reference imports to suppress errors if they are not otherwise used.
-var _ = proto.Marshal
-var _ = fmt.Errorf
-var _ = math.Inf
-
-// This is a compile-time assertion to ensure that this generated file
-// is compatible with the proto package it is being compiled against.
-// A compilation error at this line likely means your copy of the
-// proto package needs to be updated.
-const _ = proto.ProtoPackageIsVersion2 // please upgrade the proto package
-
-type ModulesServiceError_ErrorCode int32
-
-const (
-	ModulesServiceError_OK                ModulesServiceError_ErrorCode = 0
-	ModulesServiceError_INVALID_MODULE    ModulesServiceError_ErrorCode = 1
-	ModulesServiceError_INVALID_VERSION   ModulesServiceError_ErrorCode = 2
-	ModulesServiceError_INVALID_INSTANCES ModulesServiceError_ErrorCode = 3
-	ModulesServiceError_TRANSIENT_ERROR   ModulesServiceError_ErrorCode = 4
-	ModulesServiceError_UNEXPECTED_STATE  ModulesServiceError_ErrorCode = 5
-)
-
-var ModulesServiceError_ErrorCode_name = map[int32]string{
-	0: "OK",
-	1: "INVALID_MODULE",
-	2: "INVALID_VERSION",
-	3: "INVALID_INSTANCES",
-	4: "TRANSIENT_ERROR",
-	5: "UNEXPECTED_STATE",
-}
-var ModulesServiceError_ErrorCode_value = map[string]int32{
-	"OK":                0,
-	"INVALID_MODULE":    1,
-	"INVALID_VERSION":   2,
-	"INVALID_INSTANCES": 3,
-	"TRANSIENT_ERROR":   4,
-	"UNEXPECTED_STATE":  5,
-}
-
-func (x ModulesServiceError_ErrorCode) Enum() *ModulesServiceError_ErrorCode {
-	p := new(ModulesServiceError_ErrorCode)
-	*p = x
-	return p
-}
-func (x ModulesServiceError_ErrorCode) String() string {
-	return proto.EnumName(ModulesServiceError_ErrorCode_name, int32(x))
-}
-func (x *ModulesServiceError_ErrorCode) UnmarshalJSON(data []byte) error {
-	value, err := proto.UnmarshalJSONEnum(ModulesServiceError_ErrorCode_value, data, "ModulesServiceError_ErrorCode")
-	if err != nil {
-		return err
-	}
-	*x = ModulesServiceError_ErrorCode(value)
-	return nil
-}
-func (ModulesServiceError_ErrorCode) EnumDescriptor() ([]byte, []int) {
-	return fileDescriptor_modules_service_9cd3bffe4e91c59a, []int{0, 0}
-}
-
-type ModulesServiceError struct {
-	XXX_NoUnkeyedLiteral struct{} `json:"-"`
-	XXX_unrecognized     []byte   `json:"-"`
-	XXX_sizecache        int32    `json:"-"`
-}
-
-func (m *ModulesServiceError) Reset()         { *m = ModulesServiceError{} }
-func (m *ModulesServiceError) String() string { return proto.CompactTextString(m) }
-func (*ModulesServiceError) ProtoMessage()    {}
-func (*ModulesServiceError) Descriptor() ([]byte, []int) {
-	return fileDescriptor_modules_service_9cd3bffe4e91c59a, []int{0}
-}
-func (m *ModulesServiceError) XXX_Unmarshal(b []byte) error {
-	return xxx_messageInfo_ModulesServiceError.Unmarshal(m, b)
-}
-func (m *ModulesServiceError) XXX_Marshal(b []byte, deterministic bool) ([]byte, error) {
-	return xxx_messageInfo_ModulesServiceError.Marshal(b, m, deterministic)
-}
-func (dst *ModulesServiceError) XXX_Merge(src proto.Message) {
-	xxx_messageInfo_ModulesServiceError.Merge(dst, src)
-}
-func (m *ModulesServiceError) XXX_Size() int {
-	return xxx_messageInfo_ModulesServiceError.Size(m)
-}
-func (m *ModulesServiceError) XXX_DiscardUnknown() {
-	xxx_messageInfo_ModulesServiceError.DiscardUnknown(m)
-}
-
-var xxx_messageInfo_ModulesServiceError proto.InternalMessageInfo
-
-type GetModulesRequest struct {
-	XXX_NoUnkeyedLiteral struct{} `json:"-"`
-	XXX_unrecognized     []byte   `json:"-"`
-	XXX_sizecache        int32    `json:"-"`
-}
-
-func (m *GetModulesRequest) Reset()         { *m = GetModulesRequest{} }
-func (m *GetModulesRequest) String() string { return proto.CompactTextString(m) }
-func (*GetModulesRequest) ProtoMessage()    {}
-func (*GetModulesRequest) Descriptor() ([]byte, []int) {
-	return fileDescriptor_modules_service_9cd3bffe4e91c59a, []int{1}
-}
-func (m *GetModulesRequest) XXX_Unmarshal(b []byte) error {
-	return xxx_messageInfo_GetModulesRequest.Unmarshal(m, b)
-}
-func (m *GetModulesRequest) XXX_Marshal(b []byte, deterministic bool) ([]byte, error) {
-	return xxx_messageInfo_GetModulesRequest.Marshal(b, m, deterministic)
-}
-func (dst *GetModulesRequest) XXX_Merge(src proto.Message) {
-	xxx_messageInfo_GetModulesRequest.Merge(dst, src)
-}
-func (m *GetModulesRequest) XXX_Size() int {
-	return xxx_messageInfo_GetModulesRequest.Size(m)
-}
-func (m *GetModulesRequest) XXX_DiscardUnknown() {
-	xxx_messageInfo_GetModulesRequest.DiscardUnknown(m)
-}
-
-var xxx_messageInfo_GetModulesRequest proto.InternalMessageInfo
-
-type GetModulesResponse struct {
-	Module               []string `protobuf:"bytes,1,rep,name=module" json:"module,omitempty"`
-	XXX_NoUnkeyedLiteral struct{} `json:"-"`
-	XXX_unrecognized     []byte   `json:"-"`
-	XXX_sizecache        int32    `json:"-"`
-}
-
-func (m *GetModulesResponse) Reset()         { *m = GetModulesResponse{} }
-func (m *GetModulesResponse) String() string { return proto.CompactTextString(m) }
-func (*GetModulesResponse) ProtoMessage()    {}
-func (*GetModulesResponse) Descriptor() ([]byte, []int) {
-	return fileDescriptor_modules_service_9cd3bffe4e91c59a, []int{2}
-}
-func (m *GetModulesResponse) XXX_Unmarshal(b []byte) error {
-	return xxx_messageInfo_GetModulesResponse.Unmarshal(m, b)
-}
-func (m *GetModulesResponse) XXX_Marshal(b []byte, deterministic bool) ([]byte, error) {
-	return xxx_messageInfo_GetModulesResponse.Marshal(b, m, deterministic)
-}
-func (dst *GetModulesResponse) XXX_Merge(src proto.Message) {
-	xxx_messageInfo_GetModulesResponse.Merge(dst, src)
-}
-func (m *GetModulesResponse) XXX_Size() int {
-	return xxx_messageInfo_GetModulesResponse.Size(m)
-}
-func (m *GetModulesResponse) XXX_DiscardUnknown() {
-	xxx_messageInfo_GetModulesResponse.DiscardUnknown(m)
-}
-
-var xxx_messageInfo_GetModulesResponse proto.InternalMessageInfo
-
-func (m *GetModulesResponse) GetModule() []string {
-	if m != nil {
-		return m.Module
-	}
-	return nil
-}
-
-type GetVersionsRequest struct {
-	Module               *string  `protobuf:"bytes,1,opt,name=module" json:"module,omitempty"`
-	XXX_NoUnkeyedLiteral struct{} `json:"-"`
-	XXX_unrecognized     []byte   `json:"-"`
-	XXX_sizecache        int32    `json:"-"`
-}
-
-func (m *GetVersionsRequest) Reset()         { *m = GetVersionsRequest{} }
-func (m *GetVersionsRequest) String() string { return proto.CompactTextString(m) }
-func (*GetVersionsRequest) ProtoMessage()    {}
-func (*GetVersionsRequest) Descriptor() ([]byte, []int) {
-	return fileDescriptor_modules_service_9cd3bffe4e91c59a, []int{3}
-}
-func (m *GetVersionsRequest) XXX_Unmarshal(b []byte) error {
-	return xxx_messageInfo_GetVersionsRequest.Unmarshal(m, b)
-}
-func (m *GetVersionsRequest) XXX_Marshal(b []byte, deterministic bool) ([]byte, error) {
-	return xxx_messageInfo_GetVersionsRequest.Marshal(b, m, deterministic)
-}
-func (dst *GetVersionsRequest) XXX_Merge(src proto.Message) {
-	xxx_messageInfo_GetVersionsRequest.Merge(dst, src)
-}
-func (m *GetVersionsRequest) XXX_Size() int {
-	return xxx_messageInfo_GetVersionsRequest.Size(m)
-}
-func (m *GetVersionsRequest) XXX_DiscardUnknown() {
-	xxx_messageInfo_GetVersionsRequest.DiscardUnknown(m)
-}
-
-var xxx_messageInfo_GetVersionsRequest proto.InternalMessageInfo
-
-func (m *GetVersionsRequest) GetModule() string {
-	if m != nil && m.Module != nil {
-		return *m.Module
-	}
-	return ""
-}
-
-type GetVersionsResponse struct {
-	Version              []string `protobuf:"bytes,1,rep,name=version" json:"version,omitempty"`
-	XXX_NoUnkeyedLiteral struct{} `json:"-"`
-	XXX_unrecognized     []byte   `json:"-"`
-	XXX_sizecache        int32    `json:"-"`
-}
-
-func (m *GetVersionsResponse) Reset()         { *m = GetVersionsResponse{} }
-func (m *GetVersionsResponse) String() string { return proto.CompactTextString(m) }
-func (*GetVersionsResponse) ProtoMessage()    {}
-func (*GetVersionsResponse) Descriptor() ([]byte, []int) {
-	return fileDescriptor_modules_service_9cd3bffe4e91c59a, []int{4}
-}
-func (m *GetVersionsResponse) XXX_Unmarshal(b []byte) error {
-	return xxx_messageInfo_GetVersionsResponse.Unmarshal(m, b)
-}
-func (m *GetVersionsResponse) XXX_Marshal(b []byte, deterministic bool) ([]byte, error) {
-	return xxx_messageInfo_GetVersionsResponse.Marshal(b, m, deterministic)
-}
-func (dst *GetVersionsResponse) XXX_Merge(src proto.Message) {
-	xxx_messageInfo_GetVersionsResponse.Merge(dst, src)
-}
-func (m *GetVersionsResponse) XXX_Size() int {
-	return xxx_messageInfo_GetVersionsResponse.Size(m)
-}
-func (m *GetVersionsResponse) XXX_DiscardUnknown() {
-	xxx_messageInfo_GetVersionsResponse.DiscardUnknown(m)
-}
-
-var xxx_messageInfo_GetVersionsResponse proto.InternalMessageInfo
-
-func (m *GetVersionsResponse) GetVersion() []string {
-	if m != nil {
-		return m.Version
-	}
-	return nil
-}
-
-type GetDefaultVersionRequest struct {
-	Module               *string  `protobuf:"bytes,1,opt,name=module" json:"module,omitempty"`
-	XXX_NoUnkeyedLiteral struct{} `json:"-"`
-	XXX_unrecognized     []byte   `json:"-"`
-	XXX_sizecache        int32    `json:"-"`
-}
-
-func (m *GetDefaultVersionRequest) Reset()         { *m = GetDefaultVersionRequest{} }
-func (m *GetDefaultVersionRequest) String() string { return proto.CompactTextString(m) }
-func (*GetDefaultVersionRequest) ProtoMessage()    {}
-func (*GetDefaultVersionRequest) Descriptor() ([]byte, []int) {
-	return fileDescriptor_modules_service_9cd3bffe4e91c59a, []int{5}
-}
-func (m *GetDefaultVersionRequest) XXX_Unmarshal(b []byte) error {
-	return xxx_messageInfo_GetDefaultVersionRequest.Unmarshal(m, b)
-}
-func (m *GetDefaultVersionRequest) XXX_Marshal(b []byte, deterministic bool) ([]byte, error) {
-	return xxx_messageInfo_GetDefaultVersionRequest.Marshal(b, m, deterministic)
-}
-func (dst *GetDefaultVersionRequest) XXX_Merge(src proto.Message) {
-	xxx_messageInfo_GetDefaultVersionRequest.Merge(dst, src)
-}
-func (m *GetDefaultVersionRequest) XXX_Size() int {
-	return xxx_messageInfo_GetDefaultVersionRequest.Size(m)
-}
-func (m *GetDefaultVersionRequest) XXX_DiscardUnknown() {
-	xxx_messageInfo_GetDefaultVersionRequest.DiscardUnknown(m)
-}
-
-var xxx_messageInfo_GetDefaultVersionRequest proto.InternalMessageInfo
-
-func (m *GetDefaultVersionRequest) GetModule() string {
-	if m != nil && m.Module != nil {
-		return *m.Module
-	}
-	return ""
-}
-
-type GetDefaultVersionResponse struct {
-	Version              *string  `protobuf:"bytes,1,req,name=version" json:"version,omitempty"`
-	XXX_NoUnkeyedLiteral struct{} `json:"-"`
-	XXX_unrecognized     []byte   `json:"-"`
-	XXX_sizecache        int32    `json:"-"`
-}
-
-func (m *GetDefaultVersionResponse) Reset()         { *m = GetDefaultVersionResponse{} }
-func (m *GetDefaultVersionResponse) String() string { return proto.CompactTextString(m) }
-func (*GetDefaultVersionResponse) ProtoMessage()    {}
-func (*GetDefaultVersionResponse) Descriptor() ([]byte, []int) {
-	return fileDescriptor_modules_service_9cd3bffe4e91c59a, []int{6}
-}
-func (m *GetDefaultVersionResponse) XXX_Unmarshal(b []byte) error {
-	return xxx_messageInfo_GetDefaultVersionResponse.Unmarshal(m, b)
-}
-func (m *GetDefaultVersionResponse) XXX_Marshal(b []byte, deterministic bool) ([]byte, error) {
-	return xxx_messageInfo_GetDefaultVersionResponse.Marshal(b, m, deterministic)
-}
-func (dst *GetDefaultVersionResponse) XXX_Merge(src proto.Message) {
-	xxx_messageInfo_GetDefaultVersionResponse.Merge(dst, src)
-}
-func (m *GetDefaultVersionResponse) XXX_Size() int {
-	return xxx_messageInfo_GetDefaultVersionResponse.Size(m)
-}
-func (m *GetDefaultVersionResponse) XXX_DiscardUnknown() {
-	xxx_messageInfo_GetDefaultVersionResponse.DiscardUnknown(m)
-}
-
-var xxx_messageInfo_GetDefaultVersionResponse proto.InternalMessageInfo
-
-func (m *GetDefaultVersionResponse) GetVersion() string {
-	if m != nil && m.Version != nil {
-		return *m.Version
-	}
-	return ""
-}
-
-type GetNumInstancesRequest struct {
-	Module               *string  `protobuf:"bytes,1,opt,name=module" json:"module,omitempty"`
-	Version              *string  `protobuf:"bytes,2,opt,name=version" json:"version,omitempty"`
-	XXX_NoUnkeyedLiteral struct{} `json:"-"`
-	XXX_unrecognized     []byte   `json:"-"`
-	XXX_sizecache        int32    `json:"-"`
-}
-
-func (m *GetNumInstancesRequest) Reset()         { *m = GetNumInstancesRequest{} }
-func (m *GetNumInstancesRequest) String() string { return proto.CompactTextString(m) }
-func (*GetNumInstancesRequest) ProtoMessage()    {}
-func (*GetNumInstancesRequest) Descriptor() ([]byte, []int) {
-	return fileDescriptor_modules_service_9cd3bffe4e91c59a, []int{7}
-}
-func (m *GetNumInstancesRequest) XXX_Unmarshal(b []byte) error {
-	return xxx_messageInfo_GetNumInstancesRequest.Unmarshal(m, b)
-}
-func (m *GetNumInstancesRequest) XXX_Marshal(b []byte, deterministic bool) ([]byte, error) {
-	return xxx_messageInfo_GetNumInstancesRequest.Marshal(b, m, deterministic)
-}
-func (dst *GetNumInstancesRequest) XXX_Merge(src proto.Message) {
-	xxx_messageInfo_GetNumInstancesRequest.Merge(dst, src)
-}
-func (m *GetNumInstancesRequest) XXX_Size() int {
-	return xxx_messageInfo_GetNumInstancesRequest.Size(m)
-}
-func (m *GetNumInstancesRequest) XXX_DiscardUnknown() {
-	xxx_messageInfo_GetNumInstancesRequest.DiscardUnknown(m)
-}
-
-var xxx_messageInfo_GetNumInstancesRequest proto.InternalMessageInfo
-
-func (m *GetNumInstancesRequest) GetModule() string {
-	if m != nil && m.Module != nil {
-		return *m.Module
-	}
-	return ""
-}
-
-func (m *GetNumInstancesRequest) GetVersion() string {
-	if m != nil && m.Version != nil {
-		return *m.Version
-	}
-	return ""
-}
-
-type GetNumInstancesResponse struct {
-	Instances            *int64   `protobuf:"varint,1,req,name=instances" json:"instances,omitempty"`
-	XXX_NoUnkeyedLiteral struct{} `json:"-"`
-	XXX_unrecognized     []byte   `json:"-"`
-	XXX_sizecache        int32    `json:"-"`
-}
-
-func (m *GetNumInstancesResponse) Reset()         { *m = GetNumInstancesResponse{} }
-func (m *GetNumInstancesResponse) String() string { return proto.CompactTextString(m) }
-func (*GetNumInstancesResponse) ProtoMessage()    {}
-func (*GetNumInstancesResponse) Descriptor() ([]byte, []int) {
-	return fileDescriptor_modules_service_9cd3bffe4e91c59a, []int{8}
-}
-func (m *GetNumInstancesResponse) XXX_Unmarshal(b []byte) error {
-	return xxx_messageInfo_GetNumInstancesResponse.Unmarshal(m, b)
-}
-func (m *GetNumInstancesResponse) XXX_Marshal(b []byte, deterministic bool) ([]byte, error) {
-	return xxx_messageInfo_GetNumInstancesResponse.Marshal(b, m, deterministic)
-}
-func (dst *GetNumInstancesResponse) XXX_Merge(src proto.Message) {
-	xxx_messageInfo_GetNumInstancesResponse.Merge(dst, src)
-}
-func (m *GetNumInstancesResponse) XXX_Size() int {
-	return xxx_messageInfo_GetNumInstancesResponse.Size(m)
-}
-func (m *GetNumInstancesResponse) XXX_DiscardUnknown() {
-	xxx_messageInfo_GetNumInstancesResponse.DiscardUnknown(m)
-}
-
-var xxx_messageInfo_GetNumInstancesResponse proto.InternalMessageInfo
-
-func (m *GetNumInstancesResponse) GetInstances() int64 {
-	if m != nil && m.Instances != nil {
-		return *m.Instances
-	}
-	return 0
-}
-
-type SetNumInstancesRequest struct {
-	Module               *string  `protobuf:"bytes,1,opt,name=module" json:"module,omitempty"`
-	Version              *string  `protobuf:"bytes,2,opt,name=version" json:"version,omitempty"`
-	Instances            *int64   `protobuf:"varint,3,req,name=instances" json:"instances,omitempty"`
-	XXX_NoUnkeyedLiteral struct{} `json:"-"`
-	XXX_unrecognized     []byte   `json:"-"`
-	XXX_sizecache        int32    `json:"-"`
-}
-
-func (m *SetNumInstancesRequest) Reset()         { *m = SetNumInstancesRequest{} }
-func (m *SetNumInstancesRequest) String() string { return proto.CompactTextString(m) }
-func (*SetNumInstancesRequest) ProtoMessage()    {}
-func (*SetNumInstancesRequest) Descriptor() ([]byte, []int) {
-	return fileDescriptor_modules_service_9cd3bffe4e91c59a, []int{9}
-}
-func (m *SetNumInstancesRequest) XXX_Unmarshal(b []byte) error {
-	return xxx_messageInfo_SetNumInstancesRequest.Unmarshal(m, b)
-}
-func (m *SetNumInstancesRequest) XXX_Marshal(b []byte, deterministic bool) ([]byte, error) {
-	return xxx_messageInfo_SetNumInstancesRequest.Marshal(b, m, deterministic)
-}
-func (dst *SetNumInstancesRequest) XXX_Merge(src proto.Message) {
-	xxx_messageInfo_SetNumInstancesRequest.Merge(dst, src)
-}
-func (m *SetNumInstancesRequest) XXX_Size() int {
-	return xxx_messageInfo_SetNumInstancesRequest.Size(m)
-}
-func (m *SetNumInstancesRequest) XXX_DiscardUnknown() {
-	xxx_messageInfo_SetNumInstancesRequest.DiscardUnknown(m)
-}
-
-var xxx_messageInfo_SetNumInstancesRequest proto.InternalMessageInfo
-
-func (m *SetNumInstancesRequest) GetModule() string {
-	if m != nil && m.Module != nil {
-		return *m.Module
-	}
-	return ""
-}
-
-func (m *SetNumInstancesRequest) GetVersion() string {
-	if m != nil && m.Version != nil {
-		return *m.Version
-	}
-	return ""
-}
-
-func (m *SetNumInstancesRequest) GetInstances() int64 {
-	if m != nil && m.Instances != nil {
-		return *m.Instances
-	}
-	return 0
-}
-
-type SetNumInstancesResponse struct {
-	XXX_NoUnkeyedLiteral struct{} `json:"-"`
-	XXX_unrecognized     []byte   `json:"-"`
-	XXX_sizecache        int32    `json:"-"`
-}
-
-func (m *SetNumInstancesResponse) Reset()         { *m = SetNumInstancesResponse{} }
-func (m *SetNumInstancesResponse) String() string { return proto.CompactTextString(m) }
-func (*SetNumInstancesResponse) ProtoMessage()    {}
-func (*SetNumInstancesResponse) Descriptor() ([]byte, []int) {
-	return fileDescriptor_modules_service_9cd3bffe4e91c59a, []int{10}
-}
-func (m *SetNumInstancesResponse) XXX_Unmarshal(b []byte) error {
-	return xxx_messageInfo_SetNumInstancesResponse.Unmarshal(m, b)
-}
-func (m *SetNumInstancesResponse) XXX_Marshal(b []byte, deterministic bool) ([]byte, error) {
-	return xxx_messageInfo_SetNumInstancesResponse.Marshal(b, m, deterministic)
-}
-func (dst *SetNumInstancesResponse) XXX_Merge(src proto.Message) {
-	xxx_messageInfo_SetNumInstancesResponse.Merge(dst, src)
-}
-func (m *SetNumInstancesResponse) XXX_Size() int {
-	return xxx_messageInfo_SetNumInstancesResponse.Size(m)
-}
-func (m *SetNumInstancesResponse) XXX_DiscardUnknown() {
-	xxx_messageInfo_SetNumInstancesResponse.DiscardUnknown(m)
-}
-
-var xxx_messageInfo_SetNumInstancesResponse proto.InternalMessageInfo
-
-type StartModuleRequest struct {
-	Module               *string  `protobuf:"bytes,1,req,name=module" json:"module,omitempty"`
-	Version              *string  `protobuf:"bytes,2,req,name=version" json:"version,omitempty"`
-	XXX_NoUnkeyedLiteral struct{} `json:"-"`
-	XXX_unrecognized     []byte   `json:"-"`
-	XXX_sizecache        int32    `json:"-"`
-}
-
-func (m *StartModuleRequest) Reset()         { *m = StartModuleRequest{} }
-func (m *StartModuleRequest) String() string { return proto.CompactTextString(m) }
-func (*StartModuleRequest) ProtoMessage()    {}
-func (*StartModuleRequest) Descriptor() ([]byte, []int) {
-	return fileDescriptor_modules_service_9cd3bffe4e91c59a, []int{11}
-}
-func (m *StartModuleRequest) XXX_Unmarshal(b []byte) error {
-	return xxx_messageInfo_StartModuleRequest.Unmarshal(m, b)
-}
-func (m *StartModuleRequest) XXX_Marshal(b []byte, deterministic bool) ([]byte, error) {
-	return xxx_messageInfo_StartModuleRequest.Marshal(b, m, deterministic)
-}
-func (dst *StartModuleRequest) XXX_Merge(src proto.Message) {
-	xxx_messageInfo_StartModuleRequest.Merge(dst, src)
-}
-func (m *StartModuleRequest) XXX_Size() int {
-	return xxx_messageInfo_StartModuleRequest.Size(m)
-}
-func (m *StartModuleRequest) XXX_DiscardUnknown() {
-	xxx_messageInfo_StartModuleRequest.DiscardUnknown(m)
-}
-
-var xxx_messageInfo_StartModuleRequest proto.InternalMessageInfo
-
-func (m *StartModuleRequest) GetModule() string {
-	if m != nil && m.Module != nil {
-		return *m.Module
-	}
-	return ""
-}
-
-func (m *StartModuleRequest) GetVersion() string {
-	if m != nil && m.Version != nil {
-		return *m.Version
-	}
-	return ""
-}
-
-type StartModuleResponse struct {
-	XXX_NoUnkeyedLiteral struct{} `json:"-"`
-	XXX_unrecognized     []byte   `json:"-"`
-	XXX_sizecache        int32    `json:"-"`
-}
-
-func (m *StartModuleResponse) Reset()         { *m = StartModuleResponse{} }
-func (m *StartModuleResponse) String() string { return proto.CompactTextString(m) }
-func (*StartModuleResponse) ProtoMessage()    {}
-func (*StartModuleResponse) Descriptor() ([]byte, []int) {
-	return fileDescriptor_modules_service_9cd3bffe4e91c59a, []int{12}
-}
-func (m *StartModuleResponse) XXX_Unmarshal(b []byte) error {
-	return xxx_messageInfo_StartModuleResponse.Unmarshal(m, b)
-}
-func (m *StartModuleResponse) XXX_Marshal(b []byte, deterministic bool) ([]byte, error) {
-	return xxx_messageInfo_StartModuleResponse.Marshal(b, m, deterministic)
-}
-func (dst *StartModuleResponse) XXX_Merge(src proto.Message) {
-	xxx_messageInfo_StartModuleResponse.Merge(dst, src)
-}
-func (m *StartModuleResponse) XXX_Size() int {
-	return xxx_messageInfo_StartModuleResponse.Size(m)
-}
-func (m *StartModuleResponse) XXX_DiscardUnknown() {
-	xxx_messageInfo_StartModuleResponse.DiscardUnknown(m)
-}
-
-var xxx_messageInfo_StartModuleResponse proto.InternalMessageInfo
-
-type StopModuleRequest struct {
-	Module               *string  `protobuf:"bytes,1,opt,name=module" json:"module,omitempty"`
-	Version              *string  `protobuf:"bytes,2,opt,name=version" json:"version,omitempty"`
-	XXX_NoUnkeyedLiteral struct{} `json:"-"`
-	XXX_unrecognized     []byte   `json:"-"`
-	XXX_sizecache        int32    `json:"-"`
-}
-
-func (m *StopModuleRequest) Reset()         { *m = StopModuleRequest{} }
-func (m *StopModuleRequest) String() string { return proto.CompactTextString(m) }
-func (*StopModuleRequest) ProtoMessage()    {}
-func (*StopModuleRequest) Descriptor() ([]byte, []int) {
-	return fileDescriptor_modules_service_9cd3bffe4e91c59a, []int{13}
-}
-func (m *StopModuleRequest) XXX_Unmarshal(b []byte) error {
-	return xxx_messageInfo_StopModuleRequest.Unmarshal(m, b)
-}
-func (m *StopModuleRequest) XXX_Marshal(b []byte, deterministic bool) ([]byte, error) {
-	return xxx_messageInfo_StopModuleRequest.Marshal(b, m, deterministic)
-}
-func (dst *StopModuleRequest) XXX_Merge(src proto.Message) {
-	xxx_messageInfo_StopModuleRequest.Merge(dst, src)
-}
-func (m *StopModuleRequest) XXX_Size() int {
-	return xxx_messageInfo_StopModuleRequest.Size(m)
-}
-func (m *StopModuleRequest) XXX_DiscardUnknown() {
-	xxx_messageInfo_StopModuleRequest.DiscardUnknown(m)
-}
-
-var xxx_messageInfo_StopModuleRequest proto.InternalMessageInfo
-
-func (m *StopModuleRequest) GetModule() string {
-	if m != nil && m.Module != nil {
-		return *m.Module
-	}
-	return ""
-}
-
-func (m *StopModuleRequest) GetVersion() string {
-	if m != nil && m.Version != nil {
-		return *m.Version
-	}
-	return ""
-}
-
-type StopModuleResponse struct {
-	XXX_NoUnkeyedLiteral struct{} `json:"-"`
-	XXX_unrecognized     []byte   `json:"-"`
-	XXX_sizecache        int32    `json:"-"`
-}
-
-func (m *StopModuleResponse) Reset()         { *m = StopModuleResponse{} }
-func (m *StopModuleResponse) String() string { return proto.CompactTextString(m) }
-func (*StopModuleResponse) ProtoMessage()    {}
-func (*StopModuleResponse) Descriptor() ([]byte, []int) {
-	return fileDescriptor_modules_service_9cd3bffe4e91c59a, []int{14}
-}
-func (m *StopModuleResponse) XXX_Unmarshal(b []byte) error {
-	return xxx_messageInfo_StopModuleResponse.Unmarshal(m, b)
-}
-func (m *StopModuleResponse) XXX_Marshal(b []byte, deterministic bool) ([]byte, error) {
-	return xxx_messageInfo_StopModuleResponse.Marshal(b, m, deterministic)
-}
-func (dst *StopModuleResponse) XXX_Merge(src proto.Message) {
-	xxx_messageInfo_StopModuleResponse.Merge(dst, src)
-}
-func (m *StopModuleResponse) XXX_Size() int {
-	return xxx_messageInfo_StopModuleResponse.Size(m)
-}
-func (m *StopModuleResponse) XXX_DiscardUnknown() {
-	xxx_messageInfo_StopModuleResponse.DiscardUnknown(m)
-}
-
-var xxx_messageInfo_StopModuleResponse proto.InternalMessageInfo
-
-type GetHostnameRequest struct {
-	Module               *string  `protobuf:"bytes,1,opt,name=module" json:"module,omitempty"`
-	Version              *string  `protobuf:"bytes,2,opt,name=version" json:"version,omitempty"`
-	Instance             *string  `protobuf:"bytes,3,opt,name=instance" json:"instance,omitempty"`
-	XXX_NoUnkeyedLiteral struct{} `json:"-"`
-	XXX_unrecognized     []byte   `json:"-"`
-	XXX_sizecache        int32    `json:"-"`
-}
-
-func (m *GetHostnameRequest) Reset()         { *m = GetHostnameRequest{} }
-func (m *GetHostnameRequest) String() string { return proto.CompactTextString(m) }
-func (*GetHostnameRequest) ProtoMessage()    {}
-func (*GetHostnameRequest) Descriptor() ([]byte, []int) {
-	return fileDescriptor_modules_service_9cd3bffe4e91c59a, []int{15}
-}
-func (m *GetHostnameRequest) XXX_Unmarshal(b []byte) error {
-	return xxx_messageInfo_GetHostnameRequest.Unmarshal(m, b)
-}
-func (m *GetHostnameRequest) XXX_Marshal(b []byte, deterministic bool) ([]byte, error) {
-	return xxx_messageInfo_GetHostnameRequest.Marshal(b, m, deterministic)
-}
-func (dst *GetHostnameRequest) XXX_Merge(src proto.Message) {
-	xxx_messageInfo_GetHostnameRequest.Merge(dst, src)
-}
-func (m *GetHostnameRequest) XXX_Size() int {
-	return xxx_messageInfo_GetHostnameRequest.Size(m)
-}
-func (m *GetHostnameRequest) XXX_DiscardUnknown() {
-	xxx_messageInfo_GetHostnameRequest.DiscardUnknown(m)
-}
-
-var xxx_messageInfo_GetHostnameRequest proto.InternalMessageInfo
-
-func (m *GetHostnameRequest) GetModule() string {
-	if m != nil && m.Module != nil {
-		return *m.Module
-	}
-	return ""
-}
-
-func (m *GetHostnameRequest) GetVersion() string {
-	if m != nil && m.Version != nil {
-		return *m.Version
-	}
-	return ""
-}
-
-func (m *GetHostnameRequest) GetInstance() string {
-	if m != nil && m.Instance != nil {
-		return *m.Instance
-	}
-	return ""
-}
-
-type GetHostnameResponse struct {
-	Hostname             *string  `protobuf:"bytes,1,req,name=hostname" json:"hostname,omitempty"`
-	XXX_NoUnkeyedLiteral struct{} `json:"-"`
-	XXX_unrecognized     []byte   `json:"-"`
-	XXX_sizecache        int32    `json:"-"`
-}
-
-func (m *GetHostnameResponse) Reset()         { *m = GetHostnameResponse{} }
-func (m *GetHostnameResponse) String() string { return proto.CompactTextString(m) }
-func (*GetHostnameResponse) ProtoMessage()    {}
-func (*GetHostnameResponse) Descriptor() ([]byte, []int) {
-	return fileDescriptor_modules_service_9cd3bffe4e91c59a, []int{16}
-}
-func (m *GetHostnameResponse) XXX_Unmarshal(b []byte) error {
-	return xxx_messageInfo_GetHostnameResponse.Unmarshal(m, b)
-}
-func (m *GetHostnameResponse) XXX_Marshal(b []byte, deterministic bool) ([]byte, error) {
-	return xxx_messageInfo_GetHostnameResponse.Marshal(b, m, deterministic)
-}
-func (dst *GetHostnameResponse) XXX_Merge(src proto.Message) {
-	xxx_messageInfo_GetHostnameResponse.Merge(dst, src)
-}
-func (m *GetHostnameResponse) XXX_Size() int {
-	return xxx_messageInfo_GetHostnameResponse.Size(m)
-}
-func (m *GetHostnameResponse) XXX_DiscardUnknown() {
-	xxx_messageInfo_GetHostnameResponse.DiscardUnknown(m)
-}
-
-var xxx_messageInfo_GetHostnameResponse proto.InternalMessageInfo
-
-func (m *GetHostnameResponse) GetHostname() string {
-	if m != nil && m.Hostname != nil {
-		return *m.Hostname
-	}
-	return ""
-}
-
-func init() {
-	proto.RegisterType((*ModulesServiceError)(nil), "appengine.ModulesServiceError")
-	proto.RegisterType((*GetModulesRequest)(nil), "appengine.GetModulesRequest")
-	proto.RegisterType((*GetModulesResponse)(nil), "appengine.GetModulesResponse")
-	proto.RegisterType((*GetVersionsRequest)(nil), "appengine.GetVersionsRequest")
-	proto.RegisterType((*GetVersionsResponse)(nil), "appengine.GetVersionsResponse")
-	proto.RegisterType((*GetDefaultVersionRequest)(nil), "appengine.GetDefaultVersionRequest")
-	proto.RegisterType((*GetDefaultVersionResponse)(nil), "appengine.GetDefaultVersionResponse")
-	proto.RegisterType((*GetNumInstancesRequest)(nil), "appengine.GetNumInstancesRequest")
-	proto.RegisterType((*GetNumInstancesResponse)(nil), "appengine.GetNumInstancesResponse")
-	proto.RegisterType((*SetNumInstancesRequest)(nil), "appengine.SetNumInstancesRequest")
-	proto.RegisterType((*SetNumInstancesResponse)(nil), "appengine.SetNumInstancesResponse")
-	proto.RegisterType((*StartModuleRequest)(nil), "appengine.StartModuleRequest")
-	proto.RegisterType((*StartModuleResponse)(nil), "appengine.StartModuleResponse")
-	proto.RegisterType((*StopModuleRequest)(nil), "appengine.StopModuleRequest")
-	proto.RegisterType((*StopModuleResponse)(nil), "appengine.StopModuleResponse")
-	proto.RegisterType((*GetHostnameRequest)(nil), "appengine.GetHostnameRequest")
-	proto.RegisterType((*GetHostnameResponse)(nil), "appengine.GetHostnameResponse")
-}
-
-func init() {
-	proto.RegisterFile("google.golang.org/appengine/internal/modules/modules_service.proto", fileDescriptor_modules_service_9cd3bffe4e91c59a)
-}
-
-var fileDescriptor_modules_service_9cd3bffe4e91c59a = []byte{
-	// 457 bytes of a gzipped FileDescriptorProto
-	0x1f, 0x8b, 0x08, 0x00, 0x00, 0x00, 0x00, 0x00, 0x02, 0xff, 0xac, 0x94, 0xc1, 0x6f, 0xd3, 0x30,
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-	0x50, 0x2b, 0x90, 0x10, 0xe7, 0xae, 0x35, 0x25, 0xb0, 0xa5, 0x28, 0xce, 0x2a, 0xc4, 0xa5, 0x0a,
-	0xdb, 0x23, 0x8b, 0x94, 0xda, 0xc1, 0x76, 0x77, 0xe4, 0xbf, 0xe0, 0xff, 0x45, 0x4b, 0xed, 0xb6,
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-	0x46, 0xb2, 0x07, 0xce, 0xe4, 0x93, 0xff, 0x88, 0x10, 0x78, 0x1a, 0xc5, 0xd3, 0xc1, 0x79, 0x34,
-	0x9a, 0x5d, 0x4c, 0x46, 0x97, 0xe7, 0xd4, 0x6f, 0x91, 0x00, 0x9e, 0x59, 0x6d, 0x4a, 0x13, 0x16,
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-	0x47, 0xf8, 0x3d, 0x5b, 0x94, 0x76, 0xdf, 0xae, 0x26, 0x6f, 0xe1, 0x64, 0xcb, 0x9e, 0x6d, 0xad,
-	0x9c, 0xcd, 0x56, 0x1f, 0xa1, 0x33, 0x46, 0x1d, 0x2f, 0xe6, 0x11, 0x57, 0x3a, 0xe3, 0x57, 0xb8,
-	0xeb, 0x34, 0x9b, 0x2c, 0xa7, 0x5e, 0x58, 0xb1, 0xde, 0xc1, 0xf1, 0x5f, 0x2c, 0x13, 0xe0, 0x39,
-	0x78, 0x85, 0x15, 0xeb, 0x08, 0x6e, 0xb2, 0x16, 0xc2, 0x1b, 0xe8, 0xb0, 0x07, 0x0a, 0xd1, 0xec,
-	0xe4, 0xfe, 0xd9, 0xe9, 0x04, 0x8e, 0xd9, 0xf6, 0x88, 0xe1, 0x7b, 0x20, 0x4c, 0x67, 0xd2, 0xdc,
-	0x81, 0x6d, 0x01, 0x9c, 0xfb, 0x02, 0x34, 0x26, 0x7a, 0x04, 0x41, 0x83, 0x63, 0xf0, 0x14, 0xda,
-	0x4c, 0x8b, 0xea, 0x7e, 0xfa, 0xbf, 0xcd, 0xf8, 0xf0, 0x2e, 0xe5, 0x1a, 0x63, 0xe0, 0xdf, 0xea,
-	0xfb, 0xf8, 0x41, 0x28, 0xcd, 0xb3, 0xf9, 0xff, 0xd3, 0xc9, 0x29, 0x1c, 0xd8, 0x59, 0x75, 0xdd,
-	0x7a, 0x69, 0x55, 0x87, 0xaf, 0xeb, 0x5b, 0xbc, 0xee, 0x61, 0xbe, 0xec, 0x29, 0x1c, 0xdc, 0x18,
-	0xcd, 0x8c, 0x68, 0x55, 0x9f, 0x79, 0x5f, 0xf7, 0xcd, 0x5f, 0xe2, 0x77, 0x00, 0x00, 0x00, 0xff,
-	0xff, 0x6e, 0xbc, 0xe0, 0x61, 0x5c, 0x04, 0x00, 0x00,
-}
diff --git a/vendor/google.golang.org/appengine/internal/net.go b/vendor/google.golang.org/appengine/internal/net.go
deleted file mode 100644
index 3b94cf0c6..000000000
--- a/vendor/google.golang.org/appengine/internal/net.go
+++ /dev/null
@@ -1,56 +0,0 @@
-// Copyright 2014 Google Inc. All rights reserved.
-// Use of this source code is governed by the Apache 2.0
-// license that can be found in the LICENSE file.
-
-package internal
-
-// This file implements a network dialer that limits the number of concurrent connections.
-// It is only used for API calls.
-
-import (
-	"log"
-	"net"
-	"runtime"
-	"sync"
-	"time"
-)
-
-var limitSem = make(chan int, 100) // TODO(dsymonds): Use environment variable.
-
-func limitRelease() {
-	// non-blocking
-	select {
-	case <-limitSem:
-	default:
-		// This should not normally happen.
-		log.Print("appengine: unbalanced limitSem release!")
-	}
-}
-
-func limitDial(network, addr string) (net.Conn, error) {
-	limitSem <- 1
-
-	// Dial with a timeout in case the API host is MIA.
-	// The connection should normally be very fast.
-	conn, err := net.DialTimeout(network, addr, 500*time.Millisecond)
-	if err != nil {
-		limitRelease()
-		return nil, err
-	}
-	lc := &limitConn{Conn: conn}
-	runtime.SetFinalizer(lc, (*limitConn).Close) // shouldn't usually be required
-	return lc, nil
-}
-
-type limitConn struct {
-	close sync.Once
-	net.Conn
-}
-
-func (lc *limitConn) Close() error {
-	defer lc.close.Do(func() {
-		limitRelease()
-		runtime.SetFinalizer(lc, nil)
-	})
-	return lc.Conn.Close()
-}
diff --git a/vendor/google.golang.org/appengine/internal/remote_api/remote_api.pb.go b/vendor/google.golang.org/appengine/internal/remote_api/remote_api.pb.go
deleted file mode 100644
index 8d782a38e..000000000
--- a/vendor/google.golang.org/appengine/internal/remote_api/remote_api.pb.go
+++ /dev/null
@@ -1,361 +0,0 @@
-// Code generated by protoc-gen-go. DO NOT EDIT.
-// source: google.golang.org/appengine/internal/remote_api/remote_api.proto
-
-package remote_api
-
-import proto "github.com/golang/protobuf/proto"
-import fmt "fmt"
-import math "math"
-
-// Reference imports to suppress errors if they are not otherwise used.
-var _ = proto.Marshal
-var _ = fmt.Errorf
-var _ = math.Inf
-
-// This is a compile-time assertion to ensure that this generated file
-// is compatible with the proto package it is being compiled against.
-// A compilation error at this line likely means your copy of the
-// proto package needs to be updated.
-const _ = proto.ProtoPackageIsVersion2 // please upgrade the proto package
-
-type RpcError_ErrorCode int32
-
-const (
-	RpcError_UNKNOWN             RpcError_ErrorCode = 0
-	RpcError_CALL_NOT_FOUND      RpcError_ErrorCode = 1
-	RpcError_PARSE_ERROR         RpcError_ErrorCode = 2
-	RpcError_SECURITY_VIOLATION  RpcError_ErrorCode = 3
-	RpcError_OVER_QUOTA          RpcError_ErrorCode = 4
-	RpcError_REQUEST_TOO_LARGE   RpcError_ErrorCode = 5
-	RpcError_CAPABILITY_DISABLED RpcError_ErrorCode = 6
-	RpcError_FEATURE_DISABLED    RpcError_ErrorCode = 7
-	RpcError_BAD_REQUEST         RpcError_ErrorCode = 8
-	RpcError_RESPONSE_TOO_LARGE  RpcError_ErrorCode = 9
-	RpcError_CANCELLED           RpcError_ErrorCode = 10
-	RpcError_REPLAY_ERROR        RpcError_ErrorCode = 11
-	RpcError_DEADLINE_EXCEEDED   RpcError_ErrorCode = 12
-)
-
-var RpcError_ErrorCode_name = map[int32]string{
-	0:  "UNKNOWN",
-	1:  "CALL_NOT_FOUND",
-	2:  "PARSE_ERROR",
-	3:  "SECURITY_VIOLATION",
-	4:  "OVER_QUOTA",
-	5:  "REQUEST_TOO_LARGE",
-	6:  "CAPABILITY_DISABLED",
-	7:  "FEATURE_DISABLED",
-	8:  "BAD_REQUEST",
-	9:  "RESPONSE_TOO_LARGE",
-	10: "CANCELLED",
-	11: "REPLAY_ERROR",
-	12: "DEADLINE_EXCEEDED",
-}
-var RpcError_ErrorCode_value = map[string]int32{
-	"UNKNOWN":             0,
-	"CALL_NOT_FOUND":      1,
-	"PARSE_ERROR":         2,
-	"SECURITY_VIOLATION":  3,
-	"OVER_QUOTA":          4,
-	"REQUEST_TOO_LARGE":   5,
-	"CAPABILITY_DISABLED": 6,
-	"FEATURE_DISABLED":    7,
-	"BAD_REQUEST":         8,
-	"RESPONSE_TOO_LARGE":  9,
-	"CANCELLED":           10,
-	"REPLAY_ERROR":        11,
-	"DEADLINE_EXCEEDED":   12,
-}
-
-func (x RpcError_ErrorCode) Enum() *RpcError_ErrorCode {
-	p := new(RpcError_ErrorCode)
-	*p = x
-	return p
-}
-func (x RpcError_ErrorCode) String() string {
-	return proto.EnumName(RpcError_ErrorCode_name, int32(x))
-}
-func (x *RpcError_ErrorCode) UnmarshalJSON(data []byte) error {
-	value, err := proto.UnmarshalJSONEnum(RpcError_ErrorCode_value, data, "RpcError_ErrorCode")
-	if err != nil {
-		return err
-	}
-	*x = RpcError_ErrorCode(value)
-	return nil
-}
-func (RpcError_ErrorCode) EnumDescriptor() ([]byte, []int) {
-	return fileDescriptor_remote_api_1978114ec33a273d, []int{2, 0}
-}
-
-type Request struct {
-	ServiceName          *string  `protobuf:"bytes,2,req,name=service_name,json=serviceName" json:"service_name,omitempty"`
-	Method               *string  `protobuf:"bytes,3,req,name=method" json:"method,omitempty"`
-	Request              []byte   `protobuf:"bytes,4,req,name=request" json:"request,omitempty"`
-	RequestId            *string  `protobuf:"bytes,5,opt,name=request_id,json=requestId" json:"request_id,omitempty"`
-	XXX_NoUnkeyedLiteral struct{} `json:"-"`
-	XXX_unrecognized     []byte   `json:"-"`
-	XXX_sizecache        int32    `json:"-"`
-}
-
-func (m *Request) Reset()         { *m = Request{} }
-func (m *Request) String() string { return proto.CompactTextString(m) }
-func (*Request) ProtoMessage()    {}
-func (*Request) Descriptor() ([]byte, []int) {
-	return fileDescriptor_remote_api_1978114ec33a273d, []int{0}
-}
-func (m *Request) XXX_Unmarshal(b []byte) error {
-	return xxx_messageInfo_Request.Unmarshal(m, b)
-}
-func (m *Request) XXX_Marshal(b []byte, deterministic bool) ([]byte, error) {
-	return xxx_messageInfo_Request.Marshal(b, m, deterministic)
-}
-func (dst *Request) XXX_Merge(src proto.Message) {
-	xxx_messageInfo_Request.Merge(dst, src)
-}
-func (m *Request) XXX_Size() int {
-	return xxx_messageInfo_Request.Size(m)
-}
-func (m *Request) XXX_DiscardUnknown() {
-	xxx_messageInfo_Request.DiscardUnknown(m)
-}
-
-var xxx_messageInfo_Request proto.InternalMessageInfo
-
-func (m *Request) GetServiceName() string {
-	if m != nil && m.ServiceName != nil {
-		return *m.ServiceName
-	}
-	return ""
-}
-
-func (m *Request) GetMethod() string {
-	if m != nil && m.Method != nil {
-		return *m.Method
-	}
-	return ""
-}
-
-func (m *Request) GetRequest() []byte {
-	if m != nil {
-		return m.Request
-	}
-	return nil
-}
-
-func (m *Request) GetRequestId() string {
-	if m != nil && m.RequestId != nil {
-		return *m.RequestId
-	}
-	return ""
-}
-
-type ApplicationError struct {
-	Code                 *int32   `protobuf:"varint,1,req,name=code" json:"code,omitempty"`
-	Detail               *string  `protobuf:"bytes,2,req,name=detail" json:"detail,omitempty"`
-	XXX_NoUnkeyedLiteral struct{} `json:"-"`
-	XXX_unrecognized     []byte   `json:"-"`
-	XXX_sizecache        int32    `json:"-"`
-}
-
-func (m *ApplicationError) Reset()         { *m = ApplicationError{} }
-func (m *ApplicationError) String() string { return proto.CompactTextString(m) }
-func (*ApplicationError) ProtoMessage()    {}
-func (*ApplicationError) Descriptor() ([]byte, []int) {
-	return fileDescriptor_remote_api_1978114ec33a273d, []int{1}
-}
-func (m *ApplicationError) XXX_Unmarshal(b []byte) error {
-	return xxx_messageInfo_ApplicationError.Unmarshal(m, b)
-}
-func (m *ApplicationError) XXX_Marshal(b []byte, deterministic bool) ([]byte, error) {
-	return xxx_messageInfo_ApplicationError.Marshal(b, m, deterministic)
-}
-func (dst *ApplicationError) XXX_Merge(src proto.Message) {
-	xxx_messageInfo_ApplicationError.Merge(dst, src)
-}
-func (m *ApplicationError) XXX_Size() int {
-	return xxx_messageInfo_ApplicationError.Size(m)
-}
-func (m *ApplicationError) XXX_DiscardUnknown() {
-	xxx_messageInfo_ApplicationError.DiscardUnknown(m)
-}
-
-var xxx_messageInfo_ApplicationError proto.InternalMessageInfo
-
-func (m *ApplicationError) GetCode() int32 {
-	if m != nil && m.Code != nil {
-		return *m.Code
-	}
-	return 0
-}
-
-func (m *ApplicationError) GetDetail() string {
-	if m != nil && m.Detail != nil {
-		return *m.Detail
-	}
-	return ""
-}
-
-type RpcError struct {
-	Code                 *int32   `protobuf:"varint,1,req,name=code" json:"code,omitempty"`
-	Detail               *string  `protobuf:"bytes,2,opt,name=detail" json:"detail,omitempty"`
-	XXX_NoUnkeyedLiteral struct{} `json:"-"`
-	XXX_unrecognized     []byte   `json:"-"`
-	XXX_sizecache        int32    `json:"-"`
-}
-
-func (m *RpcError) Reset()         { *m = RpcError{} }
-func (m *RpcError) String() string { return proto.CompactTextString(m) }
-func (*RpcError) ProtoMessage()    {}
-func (*RpcError) Descriptor() ([]byte, []int) {
-	return fileDescriptor_remote_api_1978114ec33a273d, []int{2}
-}
-func (m *RpcError) XXX_Unmarshal(b []byte) error {
-	return xxx_messageInfo_RpcError.Unmarshal(m, b)
-}
-func (m *RpcError) XXX_Marshal(b []byte, deterministic bool) ([]byte, error) {
-	return xxx_messageInfo_RpcError.Marshal(b, m, deterministic)
-}
-func (dst *RpcError) XXX_Merge(src proto.Message) {
-	xxx_messageInfo_RpcError.Merge(dst, src)
-}
-func (m *RpcError) XXX_Size() int {
-	return xxx_messageInfo_RpcError.Size(m)
-}
-func (m *RpcError) XXX_DiscardUnknown() {
-	xxx_messageInfo_RpcError.DiscardUnknown(m)
-}
-
-var xxx_messageInfo_RpcError proto.InternalMessageInfo
-
-func (m *RpcError) GetCode() int32 {
-	if m != nil && m.Code != nil {
-		return *m.Code
-	}
-	return 0
-}
-
-func (m *RpcError) GetDetail() string {
-	if m != nil && m.Detail != nil {
-		return *m.Detail
-	}
-	return ""
-}
-
-type Response struct {
-	Response             []byte            `protobuf:"bytes,1,opt,name=response" json:"response,omitempty"`
-	Exception            []byte            `protobuf:"bytes,2,opt,name=exception" json:"exception,omitempty"`
-	ApplicationError     *ApplicationError `protobuf:"bytes,3,opt,name=application_error,json=applicationError" json:"application_error,omitempty"`
-	JavaException        []byte            `protobuf:"bytes,4,opt,name=java_exception,json=javaException" json:"java_exception,omitempty"`
-	RpcError             *RpcError         `protobuf:"bytes,5,opt,name=rpc_error,json=rpcError" json:"rpc_error,omitempty"`
-	XXX_NoUnkeyedLiteral struct{}          `json:"-"`
-	XXX_unrecognized     []byte            `json:"-"`
-	XXX_sizecache        int32             `json:"-"`
-}
-
-func (m *Response) Reset()         { *m = Response{} }
-func (m *Response) String() string { return proto.CompactTextString(m) }
-func (*Response) ProtoMessage()    {}
-func (*Response) Descriptor() ([]byte, []int) {
-	return fileDescriptor_remote_api_1978114ec33a273d, []int{3}
-}
-func (m *Response) XXX_Unmarshal(b []byte) error {
-	return xxx_messageInfo_Response.Unmarshal(m, b)
-}
-func (m *Response) XXX_Marshal(b []byte, deterministic bool) ([]byte, error) {
-	return xxx_messageInfo_Response.Marshal(b, m, deterministic)
-}
-func (dst *Response) XXX_Merge(src proto.Message) {
-	xxx_messageInfo_Response.Merge(dst, src)
-}
-func (m *Response) XXX_Size() int {
-	return xxx_messageInfo_Response.Size(m)
-}
-func (m *Response) XXX_DiscardUnknown() {
-	xxx_messageInfo_Response.DiscardUnknown(m)
-}
-
-var xxx_messageInfo_Response proto.InternalMessageInfo
-
-func (m *Response) GetResponse() []byte {
-	if m != nil {
-		return m.Response
-	}
-	return nil
-}
-
-func (m *Response) GetException() []byte {
-	if m != nil {
-		return m.Exception
-	}
-	return nil
-}
-
-func (m *Response) GetApplicationError() *ApplicationError {
-	if m != nil {
-		return m.ApplicationError
-	}
-	return nil
-}
-
-func (m *Response) GetJavaException() []byte {
-	if m != nil {
-		return m.JavaException
-	}
-	return nil
-}
-
-func (m *Response) GetRpcError() *RpcError {
-	if m != nil {
-		return m.RpcError
-	}
-	return nil
-}
-
-func init() {
-	proto.RegisterType((*Request)(nil), "remote_api.Request")
-	proto.RegisterType((*ApplicationError)(nil), "remote_api.ApplicationError")
-	proto.RegisterType((*RpcError)(nil), "remote_api.RpcError")
-	proto.RegisterType((*Response)(nil), "remote_api.Response")
-}
-
-func init() {
-	proto.RegisterFile("google.golang.org/appengine/internal/remote_api/remote_api.proto", fileDescriptor_remote_api_1978114ec33a273d)
-}
-
-var fileDescriptor_remote_api_1978114ec33a273d = []byte{
-	// 531 bytes of a gzipped FileDescriptorProto
-	0x1f, 0x8b, 0x08, 0x00, 0x00, 0x00, 0x00, 0x00, 0x02, 0xff, 0x8c, 0x93, 0x51, 0x6e, 0xd3, 0x40,
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-	0x03, 0x00, 0x00,
-}
diff --git a/vendor/google.golang.org/appengine/internal/transaction.go b/vendor/google.golang.org/appengine/internal/transaction.go
deleted file mode 100644
index 9006ae653..000000000
--- a/vendor/google.golang.org/appengine/internal/transaction.go
+++ /dev/null
@@ -1,115 +0,0 @@
-// Copyright 2014 Google Inc. All rights reserved.
-// Use of this source code is governed by the Apache 2.0
-// license that can be found in the LICENSE file.
-
-package internal
-
-// This file implements hooks for applying datastore transactions.
-
-import (
-	"errors"
-	"reflect"
-
-	"github.com/golang/protobuf/proto"
-	netcontext "golang.org/x/net/context"
-
-	basepb "google.golang.org/appengine/internal/base"
-	pb "google.golang.org/appengine/internal/datastore"
-)
-
-var transactionSetters = make(map[reflect.Type]reflect.Value)
-
-// RegisterTransactionSetter registers a function that sets transaction information
-// in a protocol buffer message. f should be a function with two arguments,
-// the first being a protocol buffer type, and the second being *datastore.Transaction.
-func RegisterTransactionSetter(f interface{}) {
-	v := reflect.ValueOf(f)
-	transactionSetters[v.Type().In(0)] = v
-}
-
-// applyTransaction applies the transaction t to message pb
-// by using the relevant setter passed to RegisterTransactionSetter.
-func applyTransaction(pb proto.Message, t *pb.Transaction) {
-	v := reflect.ValueOf(pb)
-	if f, ok := transactionSetters[v.Type()]; ok {
-		f.Call([]reflect.Value{v, reflect.ValueOf(t)})
-	}
-}
-
-var transactionKey = "used for *Transaction"
-
-func transactionFromContext(ctx netcontext.Context) *transaction {
-	t, _ := ctx.Value(&transactionKey).(*transaction)
-	return t
-}
-
-func withTransaction(ctx netcontext.Context, t *transaction) netcontext.Context {
-	return netcontext.WithValue(ctx, &transactionKey, t)
-}
-
-type transaction struct {
-	transaction pb.Transaction
-	finished    bool
-}
-
-var ErrConcurrentTransaction = errors.New("internal: concurrent transaction")
-
-func RunTransactionOnce(c netcontext.Context, f func(netcontext.Context) error, xg bool, readOnly bool, previousTransaction *pb.Transaction) (*pb.Transaction, error) {
-	if transactionFromContext(c) != nil {
-		return nil, errors.New("nested transactions are not supported")
-	}
-
-	// Begin the transaction.
-	t := &transaction{}
-	req := &pb.BeginTransactionRequest{
-		App: proto.String(FullyQualifiedAppID(c)),
-	}
-	if xg {
-		req.AllowMultipleEg = proto.Bool(true)
-	}
-	if previousTransaction != nil {
-		req.PreviousTransaction = previousTransaction
-	}
-	if readOnly {
-		req.Mode = pb.BeginTransactionRequest_READ_ONLY.Enum()
-	} else {
-		req.Mode = pb.BeginTransactionRequest_READ_WRITE.Enum()
-	}
-	if err := Call(c, "datastore_v3", "BeginTransaction", req, &t.transaction); err != nil {
-		return nil, err
-	}
-
-	// Call f, rolling back the transaction if f returns a non-nil error, or panics.
-	// The panic is not recovered.
-	defer func() {
-		if t.finished {
-			return
-		}
-		t.finished = true
-		// Ignore the error return value, since we are already returning a non-nil
-		// error (or we're panicking).
-		Call(c, "datastore_v3", "Rollback", &t.transaction, &basepb.VoidProto{})
-	}()
-	if err := f(withTransaction(c, t)); err != nil {
-		return &t.transaction, err
-	}
-	t.finished = true
-
-	// Commit the transaction.
-	res := &pb.CommitResponse{}
-	err := Call(c, "datastore_v3", "Commit", &t.transaction, res)
-	if ae, ok := err.(*APIError); ok {
-		/* TODO: restore this conditional
-		if appengine.IsDevAppServer() {
-		*/
-		// The Python Dev AppServer raises an ApplicationError with error code 2 (which is
-		// Error.CONCURRENT_TRANSACTION) and message "Concurrency exception.".
-		if ae.Code == int32(pb.Error_BAD_REQUEST) && ae.Detail == "ApplicationError: 2 Concurrency exception." {
-			return &t.transaction, ErrConcurrentTransaction
-		}
-		if ae.Code == int32(pb.Error_CONCURRENT_TRANSACTION) {
-			return &t.transaction, ErrConcurrentTransaction
-		}
-	}
-	return &t.transaction, err
-}
diff --git a/vendor/google.golang.org/appengine/internal/urlfetch/urlfetch_service.pb.go b/vendor/google.golang.org/appengine/internal/urlfetch/urlfetch_service.pb.go
deleted file mode 100644
index 5f727750a..000000000
--- a/vendor/google.golang.org/appengine/internal/urlfetch/urlfetch_service.pb.go
+++ /dev/null
@@ -1,527 +0,0 @@
-// Code generated by protoc-gen-go. DO NOT EDIT.
-// source: google.golang.org/appengine/internal/urlfetch/urlfetch_service.proto
-
-package urlfetch
-
-import proto "github.com/golang/protobuf/proto"
-import fmt "fmt"
-import math "math"
-
-// Reference imports to suppress errors if they are not otherwise used.
-var _ = proto.Marshal
-var _ = fmt.Errorf
-var _ = math.Inf
-
-// This is a compile-time assertion to ensure that this generated file
-// is compatible with the proto package it is being compiled against.
-// A compilation error at this line likely means your copy of the
-// proto package needs to be updated.
-const _ = proto.ProtoPackageIsVersion2 // please upgrade the proto package
-
-type URLFetchServiceError_ErrorCode int32
-
-const (
-	URLFetchServiceError_OK                       URLFetchServiceError_ErrorCode = 0
-	URLFetchServiceError_INVALID_URL              URLFetchServiceError_ErrorCode = 1
-	URLFetchServiceError_FETCH_ERROR              URLFetchServiceError_ErrorCode = 2
-	URLFetchServiceError_UNSPECIFIED_ERROR        URLFetchServiceError_ErrorCode = 3
-	URLFetchServiceError_RESPONSE_TOO_LARGE       URLFetchServiceError_ErrorCode = 4
-	URLFetchServiceError_DEADLINE_EXCEEDED        URLFetchServiceError_ErrorCode = 5
-	URLFetchServiceError_SSL_CERTIFICATE_ERROR    URLFetchServiceError_ErrorCode = 6
-	URLFetchServiceError_DNS_ERROR                URLFetchServiceError_ErrorCode = 7
-	URLFetchServiceError_CLOSED                   URLFetchServiceError_ErrorCode = 8
-	URLFetchServiceError_INTERNAL_TRANSIENT_ERROR URLFetchServiceError_ErrorCode = 9
-	URLFetchServiceError_TOO_MANY_REDIRECTS       URLFetchServiceError_ErrorCode = 10
-	URLFetchServiceError_MALFORMED_REPLY          URLFetchServiceError_ErrorCode = 11
-	URLFetchServiceError_CONNECTION_ERROR         URLFetchServiceError_ErrorCode = 12
-)
-
-var URLFetchServiceError_ErrorCode_name = map[int32]string{
-	0:  "OK",
-	1:  "INVALID_URL",
-	2:  "FETCH_ERROR",
-	3:  "UNSPECIFIED_ERROR",
-	4:  "RESPONSE_TOO_LARGE",
-	5:  "DEADLINE_EXCEEDED",
-	6:  "SSL_CERTIFICATE_ERROR",
-	7:  "DNS_ERROR",
-	8:  "CLOSED",
-	9:  "INTERNAL_TRANSIENT_ERROR",
-	10: "TOO_MANY_REDIRECTS",
-	11: "MALFORMED_REPLY",
-	12: "CONNECTION_ERROR",
-}
-var URLFetchServiceError_ErrorCode_value = map[string]int32{
-	"OK":                       0,
-	"INVALID_URL":              1,
-	"FETCH_ERROR":              2,
-	"UNSPECIFIED_ERROR":        3,
-	"RESPONSE_TOO_LARGE":       4,
-	"DEADLINE_EXCEEDED":        5,
-	"SSL_CERTIFICATE_ERROR":    6,
-	"DNS_ERROR":                7,
-	"CLOSED":                   8,
-	"INTERNAL_TRANSIENT_ERROR": 9,
-	"TOO_MANY_REDIRECTS":       10,
-	"MALFORMED_REPLY":          11,
-	"CONNECTION_ERROR":         12,
-}
-
-func (x URLFetchServiceError_ErrorCode) Enum() *URLFetchServiceError_ErrorCode {
-	p := new(URLFetchServiceError_ErrorCode)
-	*p = x
-	return p
-}
-func (x URLFetchServiceError_ErrorCode) String() string {
-	return proto.EnumName(URLFetchServiceError_ErrorCode_name, int32(x))
-}
-func (x *URLFetchServiceError_ErrorCode) UnmarshalJSON(data []byte) error {
-	value, err := proto.UnmarshalJSONEnum(URLFetchServiceError_ErrorCode_value, data, "URLFetchServiceError_ErrorCode")
-	if err != nil {
-		return err
-	}
-	*x = URLFetchServiceError_ErrorCode(value)
-	return nil
-}
-func (URLFetchServiceError_ErrorCode) EnumDescriptor() ([]byte, []int) {
-	return fileDescriptor_urlfetch_service_b245a7065f33bced, []int{0, 0}
-}
-
-type URLFetchRequest_RequestMethod int32
-
-const (
-	URLFetchRequest_GET    URLFetchRequest_RequestMethod = 1
-	URLFetchRequest_POST   URLFetchRequest_RequestMethod = 2
-	URLFetchRequest_HEAD   URLFetchRequest_RequestMethod = 3
-	URLFetchRequest_PUT    URLFetchRequest_RequestMethod = 4
-	URLFetchRequest_DELETE URLFetchRequest_RequestMethod = 5
-	URLFetchRequest_PATCH  URLFetchRequest_RequestMethod = 6
-)
-
-var URLFetchRequest_RequestMethod_name = map[int32]string{
-	1: "GET",
-	2: "POST",
-	3: "HEAD",
-	4: "PUT",
-	5: "DELETE",
-	6: "PATCH",
-}
-var URLFetchRequest_RequestMethod_value = map[string]int32{
-	"GET":    1,
-	"POST":   2,
-	"HEAD":   3,
-	"PUT":    4,
-	"DELETE": 5,
-	"PATCH":  6,
-}
-
-func (x URLFetchRequest_RequestMethod) Enum() *URLFetchRequest_RequestMethod {
-	p := new(URLFetchRequest_RequestMethod)
-	*p = x
-	return p
-}
-func (x URLFetchRequest_RequestMethod) String() string {
-	return proto.EnumName(URLFetchRequest_RequestMethod_name, int32(x))
-}
-func (x *URLFetchRequest_RequestMethod) UnmarshalJSON(data []byte) error {
-	value, err := proto.UnmarshalJSONEnum(URLFetchRequest_RequestMethod_value, data, "URLFetchRequest_RequestMethod")
-	if err != nil {
-		return err
-	}
-	*x = URLFetchRequest_RequestMethod(value)
-	return nil
-}
-func (URLFetchRequest_RequestMethod) EnumDescriptor() ([]byte, []int) {
-	return fileDescriptor_urlfetch_service_b245a7065f33bced, []int{1, 0}
-}
-
-type URLFetchServiceError struct {
-	XXX_NoUnkeyedLiteral struct{} `json:"-"`
-	XXX_unrecognized     []byte   `json:"-"`
-	XXX_sizecache        int32    `json:"-"`
-}
-
-func (m *URLFetchServiceError) Reset()         { *m = URLFetchServiceError{} }
-func (m *URLFetchServiceError) String() string { return proto.CompactTextString(m) }
-func (*URLFetchServiceError) ProtoMessage()    {}
-func (*URLFetchServiceError) Descriptor() ([]byte, []int) {
-	return fileDescriptor_urlfetch_service_b245a7065f33bced, []int{0}
-}
-func (m *URLFetchServiceError) XXX_Unmarshal(b []byte) error {
-	return xxx_messageInfo_URLFetchServiceError.Unmarshal(m, b)
-}
-func (m *URLFetchServiceError) XXX_Marshal(b []byte, deterministic bool) ([]byte, error) {
-	return xxx_messageInfo_URLFetchServiceError.Marshal(b, m, deterministic)
-}
-func (dst *URLFetchServiceError) XXX_Merge(src proto.Message) {
-	xxx_messageInfo_URLFetchServiceError.Merge(dst, src)
-}
-func (m *URLFetchServiceError) XXX_Size() int {
-	return xxx_messageInfo_URLFetchServiceError.Size(m)
-}
-func (m *URLFetchServiceError) XXX_DiscardUnknown() {
-	xxx_messageInfo_URLFetchServiceError.DiscardUnknown(m)
-}
-
-var xxx_messageInfo_URLFetchServiceError proto.InternalMessageInfo
-
-type URLFetchRequest struct {
-	Method                        *URLFetchRequest_RequestMethod `protobuf:"varint,1,req,name=Method,enum=appengine.URLFetchRequest_RequestMethod" json:"Method,omitempty"`
-	Url                           *string                        `protobuf:"bytes,2,req,name=Url" json:"Url,omitempty"`
-	Header                        []*URLFetchRequest_Header      `protobuf:"group,3,rep,name=Header,json=header" json:"header,omitempty"`
-	Payload                       []byte                         `protobuf:"bytes,6,opt,name=Payload" json:"Payload,omitempty"`
-	FollowRedirects               *bool                          `protobuf:"varint,7,opt,name=FollowRedirects,def=1" json:"FollowRedirects,omitempty"`
-	Deadline                      *float64                       `protobuf:"fixed64,8,opt,name=Deadline" json:"Deadline,omitempty"`
-	MustValidateServerCertificate *bool                          `protobuf:"varint,9,opt,name=MustValidateServerCertificate,def=1" json:"MustValidateServerCertificate,omitempty"`
-	XXX_NoUnkeyedLiteral          struct{}                       `json:"-"`
-	XXX_unrecognized              []byte                         `json:"-"`
-	XXX_sizecache                 int32                          `json:"-"`
-}
-
-func (m *URLFetchRequest) Reset()         { *m = URLFetchRequest{} }
-func (m *URLFetchRequest) String() string { return proto.CompactTextString(m) }
-func (*URLFetchRequest) ProtoMessage()    {}
-func (*URLFetchRequest) Descriptor() ([]byte, []int) {
-	return fileDescriptor_urlfetch_service_b245a7065f33bced, []int{1}
-}
-func (m *URLFetchRequest) XXX_Unmarshal(b []byte) error {
-	return xxx_messageInfo_URLFetchRequest.Unmarshal(m, b)
-}
-func (m *URLFetchRequest) XXX_Marshal(b []byte, deterministic bool) ([]byte, error) {
-	return xxx_messageInfo_URLFetchRequest.Marshal(b, m, deterministic)
-}
-func (dst *URLFetchRequest) XXX_Merge(src proto.Message) {
-	xxx_messageInfo_URLFetchRequest.Merge(dst, src)
-}
-func (m *URLFetchRequest) XXX_Size() int {
-	return xxx_messageInfo_URLFetchRequest.Size(m)
-}
-func (m *URLFetchRequest) XXX_DiscardUnknown() {
-	xxx_messageInfo_URLFetchRequest.DiscardUnknown(m)
-}
-
-var xxx_messageInfo_URLFetchRequest proto.InternalMessageInfo
-
-const Default_URLFetchRequest_FollowRedirects bool = true
-const Default_URLFetchRequest_MustValidateServerCertificate bool = true
-
-func (m *URLFetchRequest) GetMethod() URLFetchRequest_RequestMethod {
-	if m != nil && m.Method != nil {
-		return *m.Method
-	}
-	return URLFetchRequest_GET
-}
-
-func (m *URLFetchRequest) GetUrl() string {
-	if m != nil && m.Url != nil {
-		return *m.Url
-	}
-	return ""
-}
-
-func (m *URLFetchRequest) GetHeader() []*URLFetchRequest_Header {
-	if m != nil {
-		return m.Header
-	}
-	return nil
-}
-
-func (m *URLFetchRequest) GetPayload() []byte {
-	if m != nil {
-		return m.Payload
-	}
-	return nil
-}
-
-func (m *URLFetchRequest) GetFollowRedirects() bool {
-	if m != nil && m.FollowRedirects != nil {
-		return *m.FollowRedirects
-	}
-	return Default_URLFetchRequest_FollowRedirects
-}
-
-func (m *URLFetchRequest) GetDeadline() float64 {
-	if m != nil && m.Deadline != nil {
-		return *m.Deadline
-	}
-	return 0
-}
-
-func (m *URLFetchRequest) GetMustValidateServerCertificate() bool {
-	if m != nil && m.MustValidateServerCertificate != nil {
-		return *m.MustValidateServerCertificate
-	}
-	return Default_URLFetchRequest_MustValidateServerCertificate
-}
-
-type URLFetchRequest_Header struct {
-	Key                  *string  `protobuf:"bytes,4,req,name=Key" json:"Key,omitempty"`
-	Value                *string  `protobuf:"bytes,5,req,name=Value" json:"Value,omitempty"`
-	XXX_NoUnkeyedLiteral struct{} `json:"-"`
-	XXX_unrecognized     []byte   `json:"-"`
-	XXX_sizecache        int32    `json:"-"`
-}
-
-func (m *URLFetchRequest_Header) Reset()         { *m = URLFetchRequest_Header{} }
-func (m *URLFetchRequest_Header) String() string { return proto.CompactTextString(m) }
-func (*URLFetchRequest_Header) ProtoMessage()    {}
-func (*URLFetchRequest_Header) Descriptor() ([]byte, []int) {
-	return fileDescriptor_urlfetch_service_b245a7065f33bced, []int{1, 0}
-}
-func (m *URLFetchRequest_Header) XXX_Unmarshal(b []byte) error {
-	return xxx_messageInfo_URLFetchRequest_Header.Unmarshal(m, b)
-}
-func (m *URLFetchRequest_Header) XXX_Marshal(b []byte, deterministic bool) ([]byte, error) {
-	return xxx_messageInfo_URLFetchRequest_Header.Marshal(b, m, deterministic)
-}
-func (dst *URLFetchRequest_Header) XXX_Merge(src proto.Message) {
-	xxx_messageInfo_URLFetchRequest_Header.Merge(dst, src)
-}
-func (m *URLFetchRequest_Header) XXX_Size() int {
-	return xxx_messageInfo_URLFetchRequest_Header.Size(m)
-}
-func (m *URLFetchRequest_Header) XXX_DiscardUnknown() {
-	xxx_messageInfo_URLFetchRequest_Header.DiscardUnknown(m)
-}
-
-var xxx_messageInfo_URLFetchRequest_Header proto.InternalMessageInfo
-
-func (m *URLFetchRequest_Header) GetKey() string {
-	if m != nil && m.Key != nil {
-		return *m.Key
-	}
-	return ""
-}
-
-func (m *URLFetchRequest_Header) GetValue() string {
-	if m != nil && m.Value != nil {
-		return *m.Value
-	}
-	return ""
-}
-
-type URLFetchResponse struct {
-	Content               []byte                     `protobuf:"bytes,1,opt,name=Content" json:"Content,omitempty"`
-	StatusCode            *int32                     `protobuf:"varint,2,req,name=StatusCode" json:"StatusCode,omitempty"`
-	Header                []*URLFetchResponse_Header `protobuf:"group,3,rep,name=Header,json=header" json:"header,omitempty"`
-	ContentWasTruncated   *bool                      `protobuf:"varint,6,opt,name=ContentWasTruncated,def=0" json:"ContentWasTruncated,omitempty"`
-	ExternalBytesSent     *int64                     `protobuf:"varint,7,opt,name=ExternalBytesSent" json:"ExternalBytesSent,omitempty"`
-	ExternalBytesReceived *int64                     `protobuf:"varint,8,opt,name=ExternalBytesReceived" json:"ExternalBytesReceived,omitempty"`
-	FinalUrl              *string                    `protobuf:"bytes,9,opt,name=FinalUrl" json:"FinalUrl,omitempty"`
-	ApiCpuMilliseconds    *int64                     `protobuf:"varint,10,opt,name=ApiCpuMilliseconds,def=0" json:"ApiCpuMilliseconds,omitempty"`
-	ApiBytesSent          *int64                     `protobuf:"varint,11,opt,name=ApiBytesSent,def=0" json:"ApiBytesSent,omitempty"`
-	ApiBytesReceived      *int64                     `protobuf:"varint,12,opt,name=ApiBytesReceived,def=0" json:"ApiBytesReceived,omitempty"`
-	XXX_NoUnkeyedLiteral  struct{}                   `json:"-"`
-	XXX_unrecognized      []byte                     `json:"-"`
-	XXX_sizecache         int32                      `json:"-"`
-}
-
-func (m *URLFetchResponse) Reset()         { *m = URLFetchResponse{} }
-func (m *URLFetchResponse) String() string { return proto.CompactTextString(m) }
-func (*URLFetchResponse) ProtoMessage()    {}
-func (*URLFetchResponse) Descriptor() ([]byte, []int) {
-	return fileDescriptor_urlfetch_service_b245a7065f33bced, []int{2}
-}
-func (m *URLFetchResponse) XXX_Unmarshal(b []byte) error {
-	return xxx_messageInfo_URLFetchResponse.Unmarshal(m, b)
-}
-func (m *URLFetchResponse) XXX_Marshal(b []byte, deterministic bool) ([]byte, error) {
-	return xxx_messageInfo_URLFetchResponse.Marshal(b, m, deterministic)
-}
-func (dst *URLFetchResponse) XXX_Merge(src proto.Message) {
-	xxx_messageInfo_URLFetchResponse.Merge(dst, src)
-}
-func (m *URLFetchResponse) XXX_Size() int {
-	return xxx_messageInfo_URLFetchResponse.Size(m)
-}
-func (m *URLFetchResponse) XXX_DiscardUnknown() {
-	xxx_messageInfo_URLFetchResponse.DiscardUnknown(m)
-}
-
-var xxx_messageInfo_URLFetchResponse proto.InternalMessageInfo
-
-const Default_URLFetchResponse_ContentWasTruncated bool = false
-const Default_URLFetchResponse_ApiCpuMilliseconds int64 = 0
-const Default_URLFetchResponse_ApiBytesSent int64 = 0
-const Default_URLFetchResponse_ApiBytesReceived int64 = 0
-
-func (m *URLFetchResponse) GetContent() []byte {
-	if m != nil {
-		return m.Content
-	}
-	return nil
-}
-
-func (m *URLFetchResponse) GetStatusCode() int32 {
-	if m != nil && m.StatusCode != nil {
-		return *m.StatusCode
-	}
-	return 0
-}
-
-func (m *URLFetchResponse) GetHeader() []*URLFetchResponse_Header {
-	if m != nil {
-		return m.Header
-	}
-	return nil
-}
-
-func (m *URLFetchResponse) GetContentWasTruncated() bool {
-	if m != nil && m.ContentWasTruncated != nil {
-		return *m.ContentWasTruncated
-	}
-	return Default_URLFetchResponse_ContentWasTruncated
-}
-
-func (m *URLFetchResponse) GetExternalBytesSent() int64 {
-	if m != nil && m.ExternalBytesSent != nil {
-		return *m.ExternalBytesSent
-	}
-	return 0
-}
-
-func (m *URLFetchResponse) GetExternalBytesReceived() int64 {
-	if m != nil && m.ExternalBytesReceived != nil {
-		return *m.ExternalBytesReceived
-	}
-	return 0
-}
-
-func (m *URLFetchResponse) GetFinalUrl() string {
-	if m != nil && m.FinalUrl != nil {
-		return *m.FinalUrl
-	}
-	return ""
-}
-
-func (m *URLFetchResponse) GetApiCpuMilliseconds() int64 {
-	if m != nil && m.ApiCpuMilliseconds != nil {
-		return *m.ApiCpuMilliseconds
-	}
-	return Default_URLFetchResponse_ApiCpuMilliseconds
-}
-
-func (m *URLFetchResponse) GetApiBytesSent() int64 {
-	if m != nil && m.ApiBytesSent != nil {
-		return *m.ApiBytesSent
-	}
-	return Default_URLFetchResponse_ApiBytesSent
-}
-
-func (m *URLFetchResponse) GetApiBytesReceived() int64 {
-	if m != nil && m.ApiBytesReceived != nil {
-		return *m.ApiBytesReceived
-	}
-	return Default_URLFetchResponse_ApiBytesReceived
-}
-
-type URLFetchResponse_Header struct {
-	Key                  *string  `protobuf:"bytes,4,req,name=Key" json:"Key,omitempty"`
-	Value                *string  `protobuf:"bytes,5,req,name=Value" json:"Value,omitempty"`
-	XXX_NoUnkeyedLiteral struct{} `json:"-"`
-	XXX_unrecognized     []byte   `json:"-"`
-	XXX_sizecache        int32    `json:"-"`
-}
-
-func (m *URLFetchResponse_Header) Reset()         { *m = URLFetchResponse_Header{} }
-func (m *URLFetchResponse_Header) String() string { return proto.CompactTextString(m) }
-func (*URLFetchResponse_Header) ProtoMessage()    {}
-func (*URLFetchResponse_Header) Descriptor() ([]byte, []int) {
-	return fileDescriptor_urlfetch_service_b245a7065f33bced, []int{2, 0}
-}
-func (m *URLFetchResponse_Header) XXX_Unmarshal(b []byte) error {
-	return xxx_messageInfo_URLFetchResponse_Header.Unmarshal(m, b)
-}
-func (m *URLFetchResponse_Header) XXX_Marshal(b []byte, deterministic bool) ([]byte, error) {
-	return xxx_messageInfo_URLFetchResponse_Header.Marshal(b, m, deterministic)
-}
-func (dst *URLFetchResponse_Header) XXX_Merge(src proto.Message) {
-	xxx_messageInfo_URLFetchResponse_Header.Merge(dst, src)
-}
-func (m *URLFetchResponse_Header) XXX_Size() int {
-	return xxx_messageInfo_URLFetchResponse_Header.Size(m)
-}
-func (m *URLFetchResponse_Header) XXX_DiscardUnknown() {
-	xxx_messageInfo_URLFetchResponse_Header.DiscardUnknown(m)
-}
-
-var xxx_messageInfo_URLFetchResponse_Header proto.InternalMessageInfo
-
-func (m *URLFetchResponse_Header) GetKey() string {
-	if m != nil && m.Key != nil {
-		return *m.Key
-	}
-	return ""
-}
-
-func (m *URLFetchResponse_Header) GetValue() string {
-	if m != nil && m.Value != nil {
-		return *m.Value
-	}
-	return ""
-}
-
-func init() {
-	proto.RegisterType((*URLFetchServiceError)(nil), "appengine.URLFetchServiceError")
-	proto.RegisterType((*URLFetchRequest)(nil), "appengine.URLFetchRequest")
-	proto.RegisterType((*URLFetchRequest_Header)(nil), "appengine.URLFetchRequest.Header")
-	proto.RegisterType((*URLFetchResponse)(nil), "appengine.URLFetchResponse")
-	proto.RegisterType((*URLFetchResponse_Header)(nil), "appengine.URLFetchResponse.Header")
-}
-
-func init() {
-	proto.RegisterFile("google.golang.org/appengine/internal/urlfetch/urlfetch_service.proto", fileDescriptor_urlfetch_service_b245a7065f33bced)
-}
-
-var fileDescriptor_urlfetch_service_b245a7065f33bced = []byte{
-	// 770 bytes of a gzipped FileDescriptorProto
-	0x1f, 0x8b, 0x08, 0x00, 0x00, 0x00, 0x00, 0x00, 0x02, 0xff, 0x94, 0x54, 0xdd, 0x6e, 0xe3, 0x54,
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-	0xc7, 0x80, 0x93, 0x9d, 0x5a, 0x82, 0x7e, 0x5f, 0x53, 0x2d, 0xf1, 0x27, 0xe8, 0x4c, 0x49, 0xde,
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-	0x00, 0x00,
-}
diff --git a/vendor/google.golang.org/appengine/namespace.go b/vendor/google.golang.org/appengine/namespace.go
deleted file mode 100644
index 21860ca08..000000000
--- a/vendor/google.golang.org/appengine/namespace.go
+++ /dev/null
@@ -1,25 +0,0 @@
-// Copyright 2012 Google Inc. All rights reserved.
-// Use of this source code is governed by the Apache 2.0
-// license that can be found in the LICENSE file.
-
-package appengine
-
-import (
-	"fmt"
-	"regexp"
-
-	"golang.org/x/net/context"
-
-	"google.golang.org/appengine/internal"
-)
-
-// Namespace returns a replacement context that operates within the given namespace.
-func Namespace(c context.Context, namespace string) (context.Context, error) {
-	if !validNamespace.MatchString(namespace) {
-		return nil, fmt.Errorf("appengine: namespace %q does not match /%s/", namespace, validNamespace)
-	}
-	return internal.NamespacedContext(c, namespace), nil
-}
-
-// validNamespace matches valid namespace names.
-var validNamespace = regexp.MustCompile(`^[0-9A-Za-z._-]{0,100}$`)
diff --git a/vendor/google.golang.org/appengine/timeout.go b/vendor/google.golang.org/appengine/timeout.go
deleted file mode 100644
index 05642a992..000000000
--- a/vendor/google.golang.org/appengine/timeout.go
+++ /dev/null
@@ -1,20 +0,0 @@
-// Copyright 2013 Google Inc. All rights reserved.
-// Use of this source code is governed by the Apache 2.0
-// license that can be found in the LICENSE file.
-
-package appengine
-
-import "golang.org/x/net/context"
-
-// IsTimeoutError reports whether err is a timeout error.
-func IsTimeoutError(err error) bool {
-	if err == context.DeadlineExceeded {
-		return true
-	}
-	if t, ok := err.(interface {
-		IsTimeout() bool
-	}); ok {
-		return t.IsTimeout()
-	}
-	return false
-}
diff --git a/vendor/google.golang.org/appengine/urlfetch/urlfetch.go b/vendor/google.golang.org/appengine/urlfetch/urlfetch.go
deleted file mode 100644
index 6ffe1e6d9..000000000
--- a/vendor/google.golang.org/appengine/urlfetch/urlfetch.go
+++ /dev/null
@@ -1,210 +0,0 @@
-// Copyright 2011 Google Inc. All rights reserved.
-// Use of this source code is governed by the Apache 2.0
-// license that can be found in the LICENSE file.
-
-// Package urlfetch provides an http.RoundTripper implementation
-// for fetching URLs via App Engine's urlfetch service.
-package urlfetch // import "google.golang.org/appengine/urlfetch"
-
-import (
-	"errors"
-	"fmt"
-	"io"
-	"io/ioutil"
-	"net/http"
-	"net/url"
-	"strconv"
-	"strings"
-	"time"
-
-	"github.com/golang/protobuf/proto"
-	"golang.org/x/net/context"
-
-	"google.golang.org/appengine/internal"
-	pb "google.golang.org/appengine/internal/urlfetch"
-)
-
-// Transport is an implementation of http.RoundTripper for
-// App Engine. Users should generally create an http.Client using
-// this transport and use the Client rather than using this transport
-// directly.
-type Transport struct {
-	Context context.Context
-
-	// Controls whether the application checks the validity of SSL certificates
-	// over HTTPS connections. A value of false (the default) instructs the
-	// application to send a request to the server only if the certificate is
-	// valid and signed by a trusted certificate authority (CA), and also
-	// includes a hostname that matches the certificate. A value of true
-	// instructs the application to perform no certificate validation.
-	AllowInvalidServerCertificate bool
-}
-
-// Verify statically that *Transport implements http.RoundTripper.
-var _ http.RoundTripper = (*Transport)(nil)
-
-// Client returns an *http.Client using a default urlfetch Transport. This
-// client will have the default deadline of 5 seconds, and will check the
-// validity of SSL certificates.
-//
-// Any deadline of the provided context will be used for requests through this client;
-// if the client does not have a deadline then a 5 second default is used.
-func Client(ctx context.Context) *http.Client {
-	return &http.Client{
-		Transport: &Transport{
-			Context: ctx,
-		},
-	}
-}
-
-type bodyReader struct {
-	content   []byte
-	truncated bool
-	closed    bool
-}
-
-// ErrTruncatedBody is the error returned after the final Read() from a
-// response's Body if the body has been truncated by App Engine's proxy.
-var ErrTruncatedBody = errors.New("urlfetch: truncated body")
-
-func statusCodeToText(code int) string {
-	if t := http.StatusText(code); t != "" {
-		return t
-	}
-	return strconv.Itoa(code)
-}
-
-func (br *bodyReader) Read(p []byte) (n int, err error) {
-	if br.closed {
-		if br.truncated {
-			return 0, ErrTruncatedBody
-		}
-		return 0, io.EOF
-	}
-	n = copy(p, br.content)
-	if n > 0 {
-		br.content = br.content[n:]
-		return
-	}
-	if br.truncated {
-		br.closed = true
-		return 0, ErrTruncatedBody
-	}
-	return 0, io.EOF
-}
-
-func (br *bodyReader) Close() error {
-	br.closed = true
-	br.content = nil
-	return nil
-}
-
-// A map of the URL Fetch-accepted methods that take a request body.
-var methodAcceptsRequestBody = map[string]bool{
-	"POST":  true,
-	"PUT":   true,
-	"PATCH": true,
-}
-
-// urlString returns a valid string given a URL. This function is necessary because
-// the String method of URL doesn't correctly handle URLs with non-empty Opaque values.
-// See http://code.google.com/p/go/issues/detail?id=4860.
-func urlString(u *url.URL) string {
-	if u.Opaque == "" || strings.HasPrefix(u.Opaque, "//") {
-		return u.String()
-	}
-	aux := *u
-	aux.Opaque = "//" + aux.Host + aux.Opaque
-	return aux.String()
-}
-
-// RoundTrip issues a single HTTP request and returns its response. Per the
-// http.RoundTripper interface, RoundTrip only returns an error if there
-// was an unsupported request or the URL Fetch proxy fails.
-// Note that HTTP response codes such as 5xx, 403, 404, etc are not
-// errors as far as the transport is concerned and will be returned
-// with err set to nil.
-func (t *Transport) RoundTrip(req *http.Request) (res *http.Response, err error) {
-	methNum, ok := pb.URLFetchRequest_RequestMethod_value[req.Method]
-	if !ok {
-		return nil, fmt.Errorf("urlfetch: unsupported HTTP method %q", req.Method)
-	}
-
-	method := pb.URLFetchRequest_RequestMethod(methNum)
-
-	freq := &pb.URLFetchRequest{
-		Method:                        &method,
-		Url:                           proto.String(urlString(req.URL)),
-		FollowRedirects:               proto.Bool(false), // http.Client's responsibility
-		MustValidateServerCertificate: proto.Bool(!t.AllowInvalidServerCertificate),
-	}
-	if deadline, ok := t.Context.Deadline(); ok {
-		freq.Deadline = proto.Float64(deadline.Sub(time.Now()).Seconds())
-	}
-
-	for k, vals := range req.Header {
-		for _, val := range vals {
-			freq.Header = append(freq.Header, &pb.URLFetchRequest_Header{
-				Key:   proto.String(k),
-				Value: proto.String(val),
-			})
-		}
-	}
-	if methodAcceptsRequestBody[req.Method] && req.Body != nil {
-		// Avoid a []byte copy if req.Body has a Bytes method.
-		switch b := req.Body.(type) {
-		case interface {
-			Bytes() []byte
-		}:
-			freq.Payload = b.Bytes()
-		default:
-			freq.Payload, err = ioutil.ReadAll(req.Body)
-			if err != nil {
-				return nil, err
-			}
-		}
-	}
-
-	fres := &pb.URLFetchResponse{}
-	if err := internal.Call(t.Context, "urlfetch", "Fetch", freq, fres); err != nil {
-		return nil, err
-	}
-
-	res = &http.Response{}
-	res.StatusCode = int(*fres.StatusCode)
-	res.Status = fmt.Sprintf("%d %s", res.StatusCode, statusCodeToText(res.StatusCode))
-	res.Header = make(http.Header)
-	res.Request = req
-
-	// Faked:
-	res.ProtoMajor = 1
-	res.ProtoMinor = 1
-	res.Proto = "HTTP/1.1"
-	res.Close = true
-
-	for _, h := range fres.Header {
-		hkey := http.CanonicalHeaderKey(*h.Key)
-		hval := *h.Value
-		if hkey == "Content-Length" {
-			// Will get filled in below for all but HEAD requests.
-			if req.Method == "HEAD" {
-				res.ContentLength, _ = strconv.ParseInt(hval, 10, 64)
-			}
-			continue
-		}
-		res.Header.Add(hkey, hval)
-	}
-
-	if req.Method != "HEAD" {
-		res.ContentLength = int64(len(fres.Content))
-	}
-
-	truncated := fres.GetContentWasTruncated()
-	res.Body = &bodyReader{content: fres.Content, truncated: truncated}
-	return
-}
-
-func init() {
-	internal.RegisterErrorCodeMap("urlfetch", pb.URLFetchServiceError_ErrorCode_name)
-	internal.RegisterTimeoutErrorCode("urlfetch", int32(pb.URLFetchServiceError_DEADLINE_EXCEEDED))
-}
diff --git a/vendor/google.golang.org/genproto/LICENSE b/vendor/google.golang.org/genproto/LICENSE
deleted file mode 100644
index d64569567..000000000
--- a/vendor/google.golang.org/genproto/LICENSE
+++ /dev/null
@@ -1,202 +0,0 @@
-
-                                 Apache License
-                           Version 2.0, January 2004
-                        http://www.apache.org/licenses/
-
-   TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION
-
-   1. Definitions.
-
-      "License" shall mean the terms and conditions for use, reproduction,
-      and distribution as defined by Sections 1 through 9 of this document.
-
-      "Licensor" shall mean the copyright owner or entity authorized by
-      the copyright owner that is granting the License.
-
-      "Legal Entity" shall mean the union of the acting entity and all
-      other entities that control, are controlled by, or are under common
-      control with that entity. For the purposes of this definition,
-      "control" means (i) the power, direct or indirect, to cause the
-      direction or management of such entity, whether by contract or
-      otherwise, or (ii) ownership of fifty percent (50%) or more of the
-      outstanding shares, or (iii) beneficial ownership of such entity.
-
-      "You" (or "Your") shall mean an individual or Legal Entity
-      exercising permissions granted by this License.
-
-      "Source" form shall mean the preferred form for making modifications,
-      including but not limited to software source code, documentation
-      source, and configuration files.
-
-      "Object" form shall mean any form resulting from mechanical
-      transformation or translation of a Source form, including but
-      not limited to compiled object code, generated documentation,
-      and conversions to other media types.
-
-      "Work" shall mean the work of authorship, whether in Source or
-      Object form, made available under the License, as indicated by a
-      copyright notice that is included in or attached to the work
-      (an example is provided in the Appendix below).
-
-      "Derivative Works" shall mean any work, whether in Source or Object
-      form, that is based on (or derived from) the Work and for which the
-      editorial revisions, annotations, elaborations, or other modifications
-      represent, as a whole, an original work of authorship. For the purposes
-      of this License, Derivative Works shall not include works that remain
-      separable from, or merely link (or bind by name) to the interfaces of,
-      the Work and Derivative Works thereof.
-
-      "Contribution" shall mean any work of authorship, including
-      the original version of the Work and any modifications or additions
-      to that Work or Derivative Works thereof, that is intentionally
-      submitted to Licensor for inclusion in the Work by the copyright owner
-      or by an individual or Legal Entity authorized to submit on behalf of
-      the copyright owner. For the purposes of this definition, "submitted"
-      means any form of electronic, verbal, or written communication sent
-      to the Licensor or its representatives, including but not limited to
-      communication on electronic mailing lists, source code control systems,
-      and issue tracking systems that are managed by, or on behalf of, the
-      Licensor for the purpose of discussing and improving the Work, but
-      excluding communication that is conspicuously marked or otherwise
-      designated in writing by the copyright owner as "Not a Contribution."
-
-      "Contributor" shall mean Licensor and any individual or Legal Entity
-      on behalf of whom a Contribution has been received by Licensor and
-      subsequently incorporated within the Work.
-
-   2. Grant of Copyright License. Subject to the terms and conditions of
-      this License, each Contributor hereby grants to You a perpetual,
-      worldwide, non-exclusive, no-charge, royalty-free, irrevocable
-      copyright license to reproduce, prepare Derivative Works of,
-      publicly display, publicly perform, sublicense, and distribute the
-      Work and such Derivative Works in Source or Object form.
-
-   3. Grant of Patent License. Subject to the terms and conditions of
-      this License, each Contributor hereby grants to You a perpetual,
-      worldwide, non-exclusive, no-charge, royalty-free, irrevocable
-      (except as stated in this section) patent license to make, have made,
-      use, offer to sell, sell, import, and otherwise transfer the Work,
-      where such license applies only to those patent claims licensable
-      by such Contributor that are necessarily infringed by their
-      Contribution(s) alone or by combination of their Contribution(s)
-      with the Work to which such Contribution(s) was submitted. If You
-      institute patent litigation against any entity (including a
-      cross-claim or counterclaim in a lawsuit) alleging that the Work
-      or a Contribution incorporated within the Work constitutes direct
-      or contributory patent infringement, then any patent licenses
-      granted to You under this License for that Work shall terminate
-      as of the date such litigation is filed.
-
-   4. Redistribution. You may reproduce and distribute copies of the
-      Work or Derivative Works thereof in any medium, with or without
-      modifications, and in Source or Object form, provided that You
-      meet the following conditions:
-
-      (a) You must give any other recipients of the Work or
-          Derivative Works a copy of this License; and
-
-      (b) You must cause any modified files to carry prominent notices
-          stating that You changed the files; and
-
-      (c) You must retain, in the Source form of any Derivative Works
-          that You distribute, all copyright, patent, trademark, and
-          attribution notices from the Source form of the Work,
-          excluding those notices that do not pertain to any part of
-          the Derivative Works; and
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-      (d) If the Work includes a "NOTICE" text file as part of its
-          distribution, then any Derivative Works that You distribute must
-          include a readable copy of the attribution notices contained
-          within such NOTICE file, excluding those notices that do not
-          pertain to any part of the Derivative Works, in at least one
-          of the following places: within a NOTICE text file distributed
-          as part of the Derivative Works; within the Source form or
-          documentation, if provided along with the Derivative Works; or,
-          within a display generated by the Derivative Works, if and
-          wherever such third-party notices normally appear. The contents
-          of the NOTICE file are for informational purposes only and
-          do not modify the License. You may add Your own attribution
-          notices within Derivative Works that You distribute, alongside
-          or as an addendum to the NOTICE text from the Work, provided
-          that such additional attribution notices cannot be construed
-          as modifying the License.
-
-      You may add Your own copyright statement to Your modifications and
-      may provide additional or different license terms and conditions
-      for use, reproduction, or distribution of Your modifications, or
-      for any such Derivative Works as a whole, provided Your use,
-      reproduction, and distribution of the Work otherwise complies with
-      the conditions stated in this License.
-
-   5. Submission of Contributions. Unless You explicitly state otherwise,
-      any Contribution intentionally submitted for inclusion in the Work
-      by You to the Licensor shall be under the terms and conditions of
-      this License, without any additional terms or conditions.
-      Notwithstanding the above, nothing herein shall supersede or modify
-      the terms of any separate license agreement you may have executed
-      with Licensor regarding such Contributions.
-
-   6. Trademarks. This License does not grant permission to use the trade
-      names, trademarks, service marks, or product names of the Licensor,
-      except as required for reasonable and customary use in describing the
-      origin of the Work and reproducing the content of the NOTICE file.
-
-   7. Disclaimer of Warranty. Unless required by applicable law or
-      agreed to in writing, Licensor provides the Work (and each
-      Contributor provides its Contributions) on an "AS IS" BASIS,
-      WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
-      implied, including, without limitation, any warranties or conditions
-      of TITLE, NON-INFRINGEMENT, MERCHANTABILITY, or FITNESS FOR A
-      PARTICULAR PURPOSE. You are solely responsible for determining the
-      appropriateness of using or redistributing the Work and assume any
-      risks associated with Your exercise of permissions under this License.
-
-   8. Limitation of Liability. In no event and under no legal theory,
-      whether in tort (including negligence), contract, or otherwise,
-      unless required by applicable law (such as deliberate and grossly
-      negligent acts) or agreed to in writing, shall any Contributor be
-      liable to You for damages, including any direct, indirect, special,
-      incidental, or consequential damages of any character arising as a
-      result of this License or out of the use or inability to use the
-      Work (including but not limited to damages for loss of goodwill,
-      work stoppage, computer failure or malfunction, or any and all
-      other commercial damages or losses), even if such Contributor
-      has been advised of the possibility of such damages.
-
-   9. Accepting Warranty or Additional Liability. While redistributing
-      the Work or Derivative Works thereof, You may choose to offer,
-      and charge a fee for, acceptance of support, warranty, indemnity,
-      or other liability obligations and/or rights consistent with this
-      License. However, in accepting such obligations, You may act only
-      on Your own behalf and on Your sole responsibility, not on behalf
-      of any other Contributor, and only if You agree to indemnify,
-      defend, and hold each Contributor harmless for any liability
-      incurred by, or claims asserted against, such Contributor by reason
-      of your accepting any such warranty or additional liability.
-
-   END OF TERMS AND CONDITIONS
-
-   APPENDIX: How to apply the Apache License to your work.
-
-      To apply the Apache License to your work, attach the following
-      boilerplate notice, with the fields enclosed by brackets "[]"
-      replaced with your own identifying information. (Don't include
-      the brackets!)  The text should be enclosed in the appropriate
-      comment syntax for the file format. We also recommend that a
-      file or class name and description of purpose be included on the
-      same "printed page" as the copyright notice for easier
-      identification within third-party archives.
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-   Copyright [yyyy] [name of copyright owner]
-
-   Licensed under the Apache License, Version 2.0 (the "License");
-   you may not use this file except in compliance with the License.
-   You may obtain a copy of the License at
-
-       http://www.apache.org/licenses/LICENSE-2.0
-
-   Unless required by applicable law or agreed to in writing, software
-   distributed under the License is distributed on an "AS IS" BASIS,
-   WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-   See the License for the specific language governing permissions and
-   limitations under the License.
diff --git a/vendor/google.golang.org/genproto/googleapis/rpc/status/status.pb.go b/vendor/google.golang.org/genproto/googleapis/rpc/status/status.pb.go
deleted file mode 100644
index 3b07a25b7..000000000
--- a/vendor/google.golang.org/genproto/googleapis/rpc/status/status.pb.go
+++ /dev/null
@@ -1,156 +0,0 @@
-// Code generated by protoc-gen-go. DO NOT EDIT.
-// source: google/rpc/status.proto
-
-package status // import "google.golang.org/genproto/googleapis/rpc/status"
-
-import proto "github.com/golang/protobuf/proto"
-import fmt "fmt"
-import math "math"
-import any "github.com/golang/protobuf/ptypes/any"
-
-// Reference imports to suppress errors if they are not otherwise used.
-var _ = proto.Marshal
-var _ = fmt.Errorf
-var _ = math.Inf
-
-// This is a compile-time assertion to ensure that this generated file
-// is compatible with the proto package it is being compiled against.
-// A compilation error at this line likely means your copy of the
-// proto package needs to be updated.
-const _ = proto.ProtoPackageIsVersion2 // please upgrade the proto package
-
-// The `Status` type defines a logical error model that is suitable for different
-// programming environments, including REST APIs and RPC APIs. It is used by
-// [gRPC](https://github.com/grpc). The error model is designed to be:
-//
-// - Simple to use and understand for most users
-// - Flexible enough to meet unexpected needs
-//
-// # Overview
-//
-// The `Status` message contains three pieces of data: error code, error message,
-// and error details. The error code should be an enum value of
-// [google.rpc.Code][google.rpc.Code], but it may accept additional error codes if needed.  The
-// error message should be a developer-facing English message that helps
-// developers *understand* and *resolve* the error. If a localized user-facing
-// error message is needed, put the localized message in the error details or
-// localize it in the client. The optional error details may contain arbitrary
-// information about the error. There is a predefined set of error detail types
-// in the package `google.rpc` that can be used for common error conditions.
-//
-// # Language mapping
-//
-// The `Status` message is the logical representation of the error model, but it
-// is not necessarily the actual wire format. When the `Status` message is
-// exposed in different client libraries and different wire protocols, it can be
-// mapped differently. For example, it will likely be mapped to some exceptions
-// in Java, but more likely mapped to some error codes in C.
-//
-// # Other uses
-//
-// The error model and the `Status` message can be used in a variety of
-// environments, either with or without APIs, to provide a
-// consistent developer experience across different environments.
-//
-// Example uses of this error model include:
-//
-// - Partial errors. If a service needs to return partial errors to the client,
-//     it may embed the `Status` in the normal response to indicate the partial
-//     errors.
-//
-// - Workflow errors. A typical workflow has multiple steps. Each step may
-//     have a `Status` message for error reporting.
-//
-// - Batch operations. If a client uses batch request and batch response, the
-//     `Status` message should be used directly inside batch response, one for
-//     each error sub-response.
-//
-// - Asynchronous operations. If an API call embeds asynchronous operation
-//     results in its response, the status of those operations should be
-//     represented directly using the `Status` message.
-//
-// - Logging. If some API errors are stored in logs, the message `Status` could
-//     be used directly after any stripping needed for security/privacy reasons.
-type Status struct {
-	// The status code, which should be an enum value of [google.rpc.Code][google.rpc.Code].
-	Code int32 `protobuf:"varint,1,opt,name=code,proto3" json:"code,omitempty"`
-	// A developer-facing error message, which should be in English. Any
-	// user-facing error message should be localized and sent in the
-	// [google.rpc.Status.details][google.rpc.Status.details] field, or localized by the client.
-	Message string `protobuf:"bytes,2,opt,name=message,proto3" json:"message,omitempty"`
-	// A list of messages that carry the error details.  There is a common set of
-	// message types for APIs to use.
-	Details              []*any.Any `protobuf:"bytes,3,rep,name=details,proto3" json:"details,omitempty"`
-	XXX_NoUnkeyedLiteral struct{}   `json:"-"`
-	XXX_unrecognized     []byte     `json:"-"`
-	XXX_sizecache        int32      `json:"-"`
-}
-
-func (m *Status) Reset()         { *m = Status{} }
-func (m *Status) String() string { return proto.CompactTextString(m) }
-func (*Status) ProtoMessage()    {}
-func (*Status) Descriptor() ([]byte, []int) {
-	return fileDescriptor_status_c656c685916bdf47, []int{0}
-}
-func (m *Status) XXX_Unmarshal(b []byte) error {
-	return xxx_messageInfo_Status.Unmarshal(m, b)
-}
-func (m *Status) XXX_Marshal(b []byte, deterministic bool) ([]byte, error) {
-	return xxx_messageInfo_Status.Marshal(b, m, deterministic)
-}
-func (dst *Status) XXX_Merge(src proto.Message) {
-	xxx_messageInfo_Status.Merge(dst, src)
-}
-func (m *Status) XXX_Size() int {
-	return xxx_messageInfo_Status.Size(m)
-}
-func (m *Status) XXX_DiscardUnknown() {
-	xxx_messageInfo_Status.DiscardUnknown(m)
-}
-
-var xxx_messageInfo_Status proto.InternalMessageInfo
-
-func (m *Status) GetCode() int32 {
-	if m != nil {
-		return m.Code
-	}
-	return 0
-}
-
-func (m *Status) GetMessage() string {
-	if m != nil {
-		return m.Message
-	}
-	return ""
-}
-
-func (m *Status) GetDetails() []*any.Any {
-	if m != nil {
-		return m.Details
-	}
-	return nil
-}
-
-func init() {
-	proto.RegisterType((*Status)(nil), "google.rpc.Status")
-}
-
-func init() { proto.RegisterFile("google/rpc/status.proto", fileDescriptor_status_c656c685916bdf47) }
-
-var fileDescriptor_status_c656c685916bdf47 = []byte{
-	// 209 bytes of a gzipped FileDescriptorProto
-	0x1f, 0x8b, 0x08, 0x00, 0x00, 0x00, 0x00, 0x00, 0x02, 0xff, 0xe2, 0x12, 0x4f, 0xcf, 0xcf, 0x4f,
-	0xcf, 0x49, 0xd5, 0x2f, 0x2a, 0x48, 0xd6, 0x2f, 0x2e, 0x49, 0x2c, 0x29, 0x2d, 0xd6, 0x2b, 0x28,
-	0xca, 0x2f, 0xc9, 0x17, 0xe2, 0x82, 0x48, 0xe8, 0x15, 0x15, 0x24, 0x4b, 0x49, 0x42, 0x15, 0x81,
-	0x65, 0x92, 0x4a, 0xd3, 0xf4, 0x13, 0xf3, 0x2a, 0x21, 0xca, 0x94, 0xd2, 0xb8, 0xd8, 0x82, 0xc1,
-	0xda, 0x84, 0x84, 0xb8, 0x58, 0x92, 0xf3, 0x53, 0x52, 0x25, 0x18, 0x15, 0x18, 0x35, 0x58, 0x83,
-	0xc0, 0x6c, 0x21, 0x09, 0x2e, 0xf6, 0xdc, 0xd4, 0xe2, 0xe2, 0xc4, 0xf4, 0x54, 0x09, 0x26, 0x05,
-	0x46, 0x0d, 0xce, 0x20, 0x18, 0x57, 0x48, 0x8f, 0x8b, 0x3d, 0x25, 0xb5, 0x24, 0x31, 0x33, 0xa7,
-	0x58, 0x82, 0x59, 0x81, 0x59, 0x83, 0xdb, 0x48, 0x44, 0x0f, 0x6a, 0x21, 0xcc, 0x12, 0x3d, 0xc7,
-	0xbc, 0xca, 0x20, 0x98, 0x22, 0xa7, 0x38, 0x2e, 0xbe, 0xe4, 0xfc, 0x5c, 0x3d, 0x84, 0xa3, 0x9c,
-	0xb8, 0x21, 0xf6, 0x06, 0x80, 0x94, 0x07, 0x30, 0x46, 0x99, 0x43, 0xa5, 0xd2, 0xf3, 0x73, 0x12,
-	0xf3, 0xd2, 0xf5, 0xf2, 0x8b, 0xd2, 0xf5, 0xd3, 0x53, 0xf3, 0xc0, 0x86, 0xe9, 0x43, 0xa4, 0x12,
-	0x0b, 0x32, 0x8b, 0x91, 0xfc, 0x69, 0x0d, 0xa1, 0x16, 0x31, 0x31, 0x07, 0x05, 0x38, 0x27, 0xb1,
-	0x81, 0x55, 0x1a, 0x03, 0x02, 0x00, 0x00, 0xff, 0xff, 0xa4, 0x53, 0xf0, 0x7c, 0x10, 0x01, 0x00,
-	0x00,
-}
diff --git a/vendor/google.golang.org/grpc/AUTHORS b/vendor/google.golang.org/grpc/AUTHORS
deleted file mode 100644
index e491a9e7f..000000000
--- a/vendor/google.golang.org/grpc/AUTHORS
+++ /dev/null
@@ -1 +0,0 @@
-Google Inc.
diff --git a/vendor/google.golang.org/grpc/LICENSE b/vendor/google.golang.org/grpc/LICENSE
deleted file mode 100644
index d64569567..000000000
--- a/vendor/google.golang.org/grpc/LICENSE
+++ /dev/null
@@ -1,202 +0,0 @@
-
-                                 Apache License
-                           Version 2.0, January 2004
-                        http://www.apache.org/licenses/
-
-   TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION
-
-   1. Definitions.
-
-      "License" shall mean the terms and conditions for use, reproduction,
-      and distribution as defined by Sections 1 through 9 of this document.
-
-      "Licensor" shall mean the copyright owner or entity authorized by
-      the copyright owner that is granting the License.
-
-      "Legal Entity" shall mean the union of the acting entity and all
-      other entities that control, are controlled by, or are under common
-      control with that entity. For the purposes of this definition,
-      "control" means (i) the power, direct or indirect, to cause the
-      direction or management of such entity, whether by contract or
-      otherwise, or (ii) ownership of fifty percent (50%) or more of the
-      outstanding shares, or (iii) beneficial ownership of such entity.
-
-      "You" (or "Your") shall mean an individual or Legal Entity
-      exercising permissions granted by this License.
-
-      "Source" form shall mean the preferred form for making modifications,
-      including but not limited to software source code, documentation
-      source, and configuration files.
-
-      "Object" form shall mean any form resulting from mechanical
-      transformation or translation of a Source form, including but
-      not limited to compiled object code, generated documentation,
-      and conversions to other media types.
-
-      "Work" shall mean the work of authorship, whether in Source or
-      Object form, made available under the License, as indicated by a
-      copyright notice that is included in or attached to the work
-      (an example is provided in the Appendix below).
-
-      "Derivative Works" shall mean any work, whether in Source or Object
-      form, that is based on (or derived from) the Work and for which the
-      editorial revisions, annotations, elaborations, or other modifications
-      represent, as a whole, an original work of authorship. For the purposes
-      of this License, Derivative Works shall not include works that remain
-      separable from, or merely link (or bind by name) to the interfaces of,
-      the Work and Derivative Works thereof.
-
-      "Contribution" shall mean any work of authorship, including
-      the original version of the Work and any modifications or additions
-      to that Work or Derivative Works thereof, that is intentionally
-      submitted to Licensor for inclusion in the Work by the copyright owner
-      or by an individual or Legal Entity authorized to submit on behalf of
-      the copyright owner. For the purposes of this definition, "submitted"
-      means any form of electronic, verbal, or written communication sent
-      to the Licensor or its representatives, including but not limited to
-      communication on electronic mailing lists, source code control systems,
-      and issue tracking systems that are managed by, or on behalf of, the
-      Licensor for the purpose of discussing and improving the Work, but
-      excluding communication that is conspicuously marked or otherwise
-      designated in writing by the copyright owner as "Not a Contribution."
-
-      "Contributor" shall mean Licensor and any individual or Legal Entity
-      on behalf of whom a Contribution has been received by Licensor and
-      subsequently incorporated within the Work.
-
-   2. Grant of Copyright License. Subject to the terms and conditions of
-      this License, each Contributor hereby grants to You a perpetual,
-      worldwide, non-exclusive, no-charge, royalty-free, irrevocable
-      copyright license to reproduce, prepare Derivative Works of,
-      publicly display, publicly perform, sublicense, and distribute the
-      Work and such Derivative Works in Source or Object form.
-
-   3. Grant of Patent License. Subject to the terms and conditions of
-      this License, each Contributor hereby grants to You a perpetual,
-      worldwide, non-exclusive, no-charge, royalty-free, irrevocable
-      (except as stated in this section) patent license to make, have made,
-      use, offer to sell, sell, import, and otherwise transfer the Work,
-      where such license applies only to those patent claims licensable
-      by such Contributor that are necessarily infringed by their
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-      as of the date such litigation is filed.
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-   4. Redistribution. You may reproduce and distribute copies of the
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-      for use, reproduction, or distribution of Your modifications, or
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-      the conditions stated in this License.
-
-   5. Submission of Contributions. Unless You explicitly state otherwise,
-      any Contribution intentionally submitted for inclusion in the Work
-      by You to the Licensor shall be under the terms and conditions of
-      this License, without any additional terms or conditions.
-      Notwithstanding the above, nothing herein shall supersede or modify
-      the terms of any separate license agreement you may have executed
-      with Licensor regarding such Contributions.
-
-   6. Trademarks. This License does not grant permission to use the trade
-      names, trademarks, service marks, or product names of the Licensor,
-      except as required for reasonable and customary use in describing the
-      origin of the Work and reproducing the content of the NOTICE file.
-
-   7. Disclaimer of Warranty. Unless required by applicable law or
-      agreed to in writing, Licensor provides the Work (and each
-      Contributor provides its Contributions) on an "AS IS" BASIS,
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-      appropriateness of using or redistributing the Work and assume any
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-   8. Limitation of Liability. In no event and under no legal theory,
-      whether in tort (including negligence), contract, or otherwise,
-      unless required by applicable law (such as deliberate and grossly
-      negligent acts) or agreed to in writing, shall any Contributor be
-      liable to You for damages, including any direct, indirect, special,
-      incidental, or consequential damages of any character arising as a
-      result of this License or out of the use or inability to use the
-      Work (including but not limited to damages for loss of goodwill,
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-      other commercial damages or losses), even if such Contributor
-      has been advised of the possibility of such damages.
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-      the Work or Derivative Works thereof, You may choose to offer,
-      and charge a fee for, acceptance of support, warranty, indemnity,
-      or other liability obligations and/or rights consistent with this
-      License. However, in accepting such obligations, You may act only
-      on Your own behalf and on Your sole responsibility, not on behalf
-      of any other Contributor, and only if You agree to indemnify,
-      defend, and hold each Contributor harmless for any liability
-      incurred by, or claims asserted against, such Contributor by reason
-      of your accepting any such warranty or additional liability.
-
-   END OF TERMS AND CONDITIONS
-
-   APPENDIX: How to apply the Apache License to your work.
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-      To apply the Apache License to your work, attach the following
-      boilerplate notice, with the fields enclosed by brackets "[]"
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-      the brackets!)  The text should be enclosed in the appropriate
-      comment syntax for the file format. We also recommend that a
-      file or class name and description of purpose be included on the
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-   Copyright [yyyy] [name of copyright owner]
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-   Licensed under the Apache License, Version 2.0 (the "License");
-   you may not use this file except in compliance with the License.
-   You may obtain a copy of the License at
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-       http://www.apache.org/licenses/LICENSE-2.0
-
-   Unless required by applicable law or agreed to in writing, software
-   distributed under the License is distributed on an "AS IS" BASIS,
-   WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-   See the License for the specific language governing permissions and
-   limitations under the License.
diff --git a/vendor/google.golang.org/grpc/backoff.go b/vendor/google.golang.org/grpc/backoff.go
deleted file mode 100644
index fa31565fd..000000000
--- a/vendor/google.golang.org/grpc/backoff.go
+++ /dev/null
@@ -1,38 +0,0 @@
-/*
- *
- * Copyright 2017 gRPC authors.
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *     http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- *
- */
-
-// See internal/backoff package for the backoff implementation. This file is
-// kept for the exported types and API backward compatility.
-
-package grpc
-
-import (
-	"time"
-)
-
-// DefaultBackoffConfig uses values specified for backoff in
-// https://github.com/grpc/grpc/blob/master/doc/connection-backoff.md.
-var DefaultBackoffConfig = BackoffConfig{
-	MaxDelay: 120 * time.Second,
-}
-
-// BackoffConfig defines the parameters for the default gRPC backoff strategy.
-type BackoffConfig struct {
-	// MaxDelay is the upper bound of backoff delay.
-	MaxDelay time.Duration
-}
diff --git a/vendor/google.golang.org/grpc/balancer.go b/vendor/google.golang.org/grpc/balancer.go
deleted file mode 100644
index e1730166c..000000000
--- a/vendor/google.golang.org/grpc/balancer.go
+++ /dev/null
@@ -1,416 +0,0 @@
-/*
- *
- * Copyright 2016 gRPC authors.
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *     http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- *
- */
-
-package grpc
-
-import (
-	"fmt"
-	"net"
-	"sync"
-
-	"golang.org/x/net/context"
-	"google.golang.org/grpc/codes"
-	"google.golang.org/grpc/credentials"
-	"google.golang.org/grpc/grpclog"
-	"google.golang.org/grpc/naming"
-	"google.golang.org/grpc/status"
-)
-
-// Address represents a server the client connects to.
-//
-// Deprecated: please use package balancer.
-type Address struct {
-	// Addr is the server address on which a connection will be established.
-	Addr string
-	// Metadata is the information associated with Addr, which may be used
-	// to make load balancing decision.
-	Metadata interface{}
-}
-
-// BalancerConfig specifies the configurations for Balancer.
-//
-// Deprecated: please use package balancer.
-type BalancerConfig struct {
-	// DialCreds is the transport credential the Balancer implementation can
-	// use to dial to a remote load balancer server. The Balancer implementations
-	// can ignore this if it does not need to talk to another party securely.
-	DialCreds credentials.TransportCredentials
-	// Dialer is the custom dialer the Balancer implementation can use to dial
-	// to a remote load balancer server. The Balancer implementations
-	// can ignore this if it doesn't need to talk to remote balancer.
-	Dialer func(context.Context, string) (net.Conn, error)
-}
-
-// BalancerGetOptions configures a Get call.
-//
-// Deprecated: please use package balancer.
-type BalancerGetOptions struct {
-	// BlockingWait specifies whether Get should block when there is no
-	// connected address.
-	BlockingWait bool
-}
-
-// Balancer chooses network addresses for RPCs.
-//
-// Deprecated: please use package balancer.
-type Balancer interface {
-	// Start does the initialization work to bootstrap a Balancer. For example,
-	// this function may start the name resolution and watch the updates. It will
-	// be called when dialing.
-	Start(target string, config BalancerConfig) error
-	// Up informs the Balancer that gRPC has a connection to the server at
-	// addr. It returns down which is called once the connection to addr gets
-	// lost or closed.
-	// TODO: It is not clear how to construct and take advantage of the meaningful error
-	// parameter for down. Need realistic demands to guide.
-	Up(addr Address) (down func(error))
-	// Get gets the address of a server for the RPC corresponding to ctx.
-	// i) If it returns a connected address, gRPC internals issues the RPC on the
-	// connection to this address;
-	// ii) If it returns an address on which the connection is under construction
-	// (initiated by Notify(...)) but not connected, gRPC internals
-	//  * fails RPC if the RPC is fail-fast and connection is in the TransientFailure or
-	//  Shutdown state;
-	//  or
-	//  * issues RPC on the connection otherwise.
-	// iii) If it returns an address on which the connection does not exist, gRPC
-	// internals treats it as an error and will fail the corresponding RPC.
-	//
-	// Therefore, the following is the recommended rule when writing a custom Balancer.
-	// If opts.BlockingWait is true, it should return a connected address or
-	// block if there is no connected address. It should respect the timeout or
-	// cancellation of ctx when blocking. If opts.BlockingWait is false (for fail-fast
-	// RPCs), it should return an address it has notified via Notify(...) immediately
-	// instead of blocking.
-	//
-	// The function returns put which is called once the rpc has completed or failed.
-	// put can collect and report RPC stats to a remote load balancer.
-	//
-	// This function should only return the errors Balancer cannot recover by itself.
-	// gRPC internals will fail the RPC if an error is returned.
-	Get(ctx context.Context, opts BalancerGetOptions) (addr Address, put func(), err error)
-	// Notify returns a channel that is used by gRPC internals to watch the addresses
-	// gRPC needs to connect. The addresses might be from a name resolver or remote
-	// load balancer. gRPC internals will compare it with the existing connected
-	// addresses. If the address Balancer notified is not in the existing connected
-	// addresses, gRPC starts to connect the address. If an address in the existing
-	// connected addresses is not in the notification list, the corresponding connection
-	// is shutdown gracefully. Otherwise, there are no operations to take. Note that
-	// the Address slice must be the full list of the Addresses which should be connected.
-	// It is NOT delta.
-	Notify() <-chan []Address
-	// Close shuts down the balancer.
-	Close() error
-}
-
-// downErr implements net.Error. It is constructed by gRPC internals and passed to the down
-// call of Balancer.
-type downErr struct {
-	timeout   bool
-	temporary bool
-	desc      string
-}
-
-func (e downErr) Error() string   { return e.desc }
-func (e downErr) Timeout() bool   { return e.timeout }
-func (e downErr) Temporary() bool { return e.temporary }
-
-func downErrorf(timeout, temporary bool, format string, a ...interface{}) downErr {
-	return downErr{
-		timeout:   timeout,
-		temporary: temporary,
-		desc:      fmt.Sprintf(format, a...),
-	}
-}
-
-// RoundRobin returns a Balancer that selects addresses round-robin. It uses r to watch
-// the name resolution updates and updates the addresses available correspondingly.
-//
-// Deprecated: please use package balancer/roundrobin.
-func RoundRobin(r naming.Resolver) Balancer {
-	return &roundRobin{r: r}
-}
-
-type addrInfo struct {
-	addr      Address
-	connected bool
-}
-
-type roundRobin struct {
-	r      naming.Resolver
-	w      naming.Watcher
-	addrs  []*addrInfo // all the addresses the client should potentially connect
-	mu     sync.Mutex
-	addrCh chan []Address // the channel to notify gRPC internals the list of addresses the client should connect to.
-	next   int            // index of the next address to return for Get()
-	waitCh chan struct{}  // the channel to block when there is no connected address available
-	done   bool           // The Balancer is closed.
-}
-
-func (rr *roundRobin) watchAddrUpdates() error {
-	updates, err := rr.w.Next()
-	if err != nil {
-		grpclog.Warningf("grpc: the naming watcher stops working due to %v.", err)
-		return err
-	}
-	rr.mu.Lock()
-	defer rr.mu.Unlock()
-	for _, update := range updates {
-		addr := Address{
-			Addr:     update.Addr,
-			Metadata: update.Metadata,
-		}
-		switch update.Op {
-		case naming.Add:
-			var exist bool
-			for _, v := range rr.addrs {
-				if addr == v.addr {
-					exist = true
-					grpclog.Infoln("grpc: The name resolver wanted to add an existing address: ", addr)
-					break
-				}
-			}
-			if exist {
-				continue
-			}
-			rr.addrs = append(rr.addrs, &addrInfo{addr: addr})
-		case naming.Delete:
-			for i, v := range rr.addrs {
-				if addr == v.addr {
-					copy(rr.addrs[i:], rr.addrs[i+1:])
-					rr.addrs = rr.addrs[:len(rr.addrs)-1]
-					break
-				}
-			}
-		default:
-			grpclog.Errorln("Unknown update.Op ", update.Op)
-		}
-	}
-	// Make a copy of rr.addrs and write it onto rr.addrCh so that gRPC internals gets notified.
-	open := make([]Address, len(rr.addrs))
-	for i, v := range rr.addrs {
-		open[i] = v.addr
-	}
-	if rr.done {
-		return ErrClientConnClosing
-	}
-	select {
-	case <-rr.addrCh:
-	default:
-	}
-	rr.addrCh <- open
-	return nil
-}
-
-func (rr *roundRobin) Start(target string, config BalancerConfig) error {
-	rr.mu.Lock()
-	defer rr.mu.Unlock()
-	if rr.done {
-		return ErrClientConnClosing
-	}
-	if rr.r == nil {
-		// If there is no name resolver installed, it is not needed to
-		// do name resolution. In this case, target is added into rr.addrs
-		// as the only address available and rr.addrCh stays nil.
-		rr.addrs = append(rr.addrs, &addrInfo{addr: Address{Addr: target}})
-		return nil
-	}
-	w, err := rr.r.Resolve(target)
-	if err != nil {
-		return err
-	}
-	rr.w = w
-	rr.addrCh = make(chan []Address, 1)
-	go func() {
-		for {
-			if err := rr.watchAddrUpdates(); err != nil {
-				return
-			}
-		}
-	}()
-	return nil
-}
-
-// Up sets the connected state of addr and sends notification if there are pending
-// Get() calls.
-func (rr *roundRobin) Up(addr Address) func(error) {
-	rr.mu.Lock()
-	defer rr.mu.Unlock()
-	var cnt int
-	for _, a := range rr.addrs {
-		if a.addr == addr {
-			if a.connected {
-				return nil
-			}
-			a.connected = true
-		}
-		if a.connected {
-			cnt++
-		}
-	}
-	// addr is only one which is connected. Notify the Get() callers who are blocking.
-	if cnt == 1 && rr.waitCh != nil {
-		close(rr.waitCh)
-		rr.waitCh = nil
-	}
-	return func(err error) {
-		rr.down(addr, err)
-	}
-}
-
-// down unsets the connected state of addr.
-func (rr *roundRobin) down(addr Address, err error) {
-	rr.mu.Lock()
-	defer rr.mu.Unlock()
-	for _, a := range rr.addrs {
-		if addr == a.addr {
-			a.connected = false
-			break
-		}
-	}
-}
-
-// Get returns the next addr in the rotation.
-func (rr *roundRobin) Get(ctx context.Context, opts BalancerGetOptions) (addr Address, put func(), err error) {
-	var ch chan struct{}
-	rr.mu.Lock()
-	if rr.done {
-		rr.mu.Unlock()
-		err = ErrClientConnClosing
-		return
-	}
-
-	if len(rr.addrs) > 0 {
-		if rr.next >= len(rr.addrs) {
-			rr.next = 0
-		}
-		next := rr.next
-		for {
-			a := rr.addrs[next]
-			next = (next + 1) % len(rr.addrs)
-			if a.connected {
-				addr = a.addr
-				rr.next = next
-				rr.mu.Unlock()
-				return
-			}
-			if next == rr.next {
-				// Has iterated all the possible address but none is connected.
-				break
-			}
-		}
-	}
-	if !opts.BlockingWait {
-		if len(rr.addrs) == 0 {
-			rr.mu.Unlock()
-			err = status.Errorf(codes.Unavailable, "there is no address available")
-			return
-		}
-		// Returns the next addr on rr.addrs for failfast RPCs.
-		addr = rr.addrs[rr.next].addr
-		rr.next++
-		rr.mu.Unlock()
-		return
-	}
-	// Wait on rr.waitCh for non-failfast RPCs.
-	if rr.waitCh == nil {
-		ch = make(chan struct{})
-		rr.waitCh = ch
-	} else {
-		ch = rr.waitCh
-	}
-	rr.mu.Unlock()
-	for {
-		select {
-		case <-ctx.Done():
-			err = ctx.Err()
-			return
-		case <-ch:
-			rr.mu.Lock()
-			if rr.done {
-				rr.mu.Unlock()
-				err = ErrClientConnClosing
-				return
-			}
-
-			if len(rr.addrs) > 0 {
-				if rr.next >= len(rr.addrs) {
-					rr.next = 0
-				}
-				next := rr.next
-				for {
-					a := rr.addrs[next]
-					next = (next + 1) % len(rr.addrs)
-					if a.connected {
-						addr = a.addr
-						rr.next = next
-						rr.mu.Unlock()
-						return
-					}
-					if next == rr.next {
-						// Has iterated all the possible address but none is connected.
-						break
-					}
-				}
-			}
-			// The newly added addr got removed by Down() again.
-			if rr.waitCh == nil {
-				ch = make(chan struct{})
-				rr.waitCh = ch
-			} else {
-				ch = rr.waitCh
-			}
-			rr.mu.Unlock()
-		}
-	}
-}
-
-func (rr *roundRobin) Notify() <-chan []Address {
-	return rr.addrCh
-}
-
-func (rr *roundRobin) Close() error {
-	rr.mu.Lock()
-	defer rr.mu.Unlock()
-	if rr.done {
-		return errBalancerClosed
-	}
-	rr.done = true
-	if rr.w != nil {
-		rr.w.Close()
-	}
-	if rr.waitCh != nil {
-		close(rr.waitCh)
-		rr.waitCh = nil
-	}
-	if rr.addrCh != nil {
-		close(rr.addrCh)
-	}
-	return nil
-}
-
-// pickFirst is used to test multi-addresses in one addrConn in which all addresses share the same addrConn.
-// It is a wrapper around roundRobin balancer. The logic of all methods works fine because balancer.Get()
-// returns the only address Up by resetTransport().
-type pickFirst struct {
-	*roundRobin
-}
-
-func pickFirstBalancerV1(r naming.Resolver) Balancer {
-	return &pickFirst{&roundRobin{r: r}}
-}
diff --git a/vendor/google.golang.org/grpc/balancer/balancer.go b/vendor/google.golang.org/grpc/balancer/balancer.go
deleted file mode 100644
index f9d83c2f3..000000000
--- a/vendor/google.golang.org/grpc/balancer/balancer.go
+++ /dev/null
@@ -1,270 +0,0 @@
-/*
- *
- * Copyright 2017 gRPC authors.
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *     http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- *
- */
-
-// Package balancer defines APIs for load balancing in gRPC.
-// All APIs in this package are experimental.
-package balancer
-
-import (
-	"errors"
-	"net"
-	"strings"
-
-	"golang.org/x/net/context"
-	"google.golang.org/grpc/connectivity"
-	"google.golang.org/grpc/credentials"
-	"google.golang.org/grpc/resolver"
-)
-
-var (
-	// m is a map from name to balancer builder.
-	m = make(map[string]Builder)
-)
-
-// Register registers the balancer builder to the balancer map. b.Name
-// (lowercased) will be used as the name registered with this builder.
-//
-// NOTE: this function must only be called during initialization time (i.e. in
-// an init() function), and is not thread-safe. If multiple Balancers are
-// registered with the same name, the one registered last will take effect.
-func Register(b Builder) {
-	m[strings.ToLower(b.Name())] = b
-}
-
-// Get returns the resolver builder registered with the given name.
-// Note that the compare is done in a case-insenstive fashion.
-// If no builder is register with the name, nil will be returned.
-func Get(name string) Builder {
-	if b, ok := m[strings.ToLower(name)]; ok {
-		return b
-	}
-	return nil
-}
-
-// SubConn represents a gRPC sub connection.
-// Each sub connection contains a list of addresses. gRPC will
-// try to connect to them (in sequence), and stop trying the
-// remainder once one connection is successful.
-//
-// The reconnect backoff will be applied on the list, not a single address.
-// For example, try_on_all_addresses -> backoff -> try_on_all_addresses.
-//
-// All SubConns start in IDLE, and will not try to connect. To trigger
-// the connecting, Balancers must call Connect.
-// When the connection encounters an error, it will reconnect immediately.
-// When the connection becomes IDLE, it will not reconnect unless Connect is
-// called.
-//
-// This interface is to be implemented by gRPC. Users should not need a
-// brand new implementation of this interface. For the situations like
-// testing, the new implementation should embed this interface. This allows
-// gRPC to add new methods to this interface.
-type SubConn interface {
-	// UpdateAddresses updates the addresses used in this SubConn.
-	// gRPC checks if currently-connected address is still in the new list.
-	// If it's in the list, the connection will be kept.
-	// If it's not in the list, the connection will gracefully closed, and
-	// a new connection will be created.
-	//
-	// This will trigger a state transition for the SubConn.
-	UpdateAddresses([]resolver.Address)
-	// Connect starts the connecting for this SubConn.
-	Connect()
-}
-
-// NewSubConnOptions contains options to create new SubConn.
-type NewSubConnOptions struct{}
-
-// ClientConn represents a gRPC ClientConn.
-//
-// This interface is to be implemented by gRPC. Users should not need a
-// brand new implementation of this interface. For the situations like
-// testing, the new implementation should embed this interface. This allows
-// gRPC to add new methods to this interface.
-type ClientConn interface {
-	// NewSubConn is called by balancer to create a new SubConn.
-	// It doesn't block and wait for the connections to be established.
-	// Behaviors of the SubConn can be controlled by options.
-	NewSubConn([]resolver.Address, NewSubConnOptions) (SubConn, error)
-	// RemoveSubConn removes the SubConn from ClientConn.
-	// The SubConn will be shutdown.
-	RemoveSubConn(SubConn)
-
-	// UpdateBalancerState is called by balancer to nofity gRPC that some internal
-	// state in balancer has changed.
-	//
-	// gRPC will update the connectivity state of the ClientConn, and will call pick
-	// on the new picker to pick new SubConn.
-	UpdateBalancerState(s connectivity.State, p Picker)
-
-	// ResolveNow is called by balancer to notify gRPC to do a name resolving.
-	ResolveNow(resolver.ResolveNowOption)
-
-	// Target returns the dial target for this ClientConn.
-	Target() string
-}
-
-// BuildOptions contains additional information for Build.
-type BuildOptions struct {
-	// DialCreds is the transport credential the Balancer implementation can
-	// use to dial to a remote load balancer server. The Balancer implementations
-	// can ignore this if it does not need to talk to another party securely.
-	DialCreds credentials.TransportCredentials
-	// Dialer is the custom dialer the Balancer implementation can use to dial
-	// to a remote load balancer server. The Balancer implementations
-	// can ignore this if it doesn't need to talk to remote balancer.
-	Dialer func(context.Context, string) (net.Conn, error)
-	// ChannelzParentID is the entity parent's channelz unique identification number.
-	ChannelzParentID int64
-}
-
-// Builder creates a balancer.
-type Builder interface {
-	// Build creates a new balancer with the ClientConn.
-	Build(cc ClientConn, opts BuildOptions) Balancer
-	// Name returns the name of balancers built by this builder.
-	// It will be used to pick balancers (for example in service config).
-	Name() string
-}
-
-// PickOptions contains addition information for the Pick operation.
-type PickOptions struct{}
-
-// DoneInfo contains additional information for done.
-type DoneInfo struct {
-	// Err is the rpc error the RPC finished with. It could be nil.
-	Err error
-	// BytesSent indicates if any bytes have been sent to the server.
-	BytesSent bool
-	// BytesReceived indicates if any byte has been received from the server.
-	BytesReceived bool
-}
-
-var (
-	// ErrNoSubConnAvailable indicates no SubConn is available for pick().
-	// gRPC will block the RPC until a new picker is available via UpdateBalancerState().
-	ErrNoSubConnAvailable = errors.New("no SubConn is available")
-	// ErrTransientFailure indicates all SubConns are in TransientFailure.
-	// WaitForReady RPCs will block, non-WaitForReady RPCs will fail.
-	ErrTransientFailure = errors.New("all SubConns are in TransientFailure")
-)
-
-// Picker is used by gRPC to pick a SubConn to send an RPC.
-// Balancer is expected to generate a new picker from its snapshot every time its
-// internal state has changed.
-//
-// The pickers used by gRPC can be updated by ClientConn.UpdateBalancerState().
-type Picker interface {
-	// Pick returns the SubConn to be used to send the RPC.
-	// The returned SubConn must be one returned by NewSubConn().
-	//
-	// This functions is expected to return:
-	// - a SubConn that is known to be READY;
-	// - ErrNoSubConnAvailable if no SubConn is available, but progress is being
-	//   made (for example, some SubConn is in CONNECTING mode);
-	// - other errors if no active connecting is happening (for example, all SubConn
-	//   are in TRANSIENT_FAILURE mode).
-	//
-	// If a SubConn is returned:
-	// - If it is READY, gRPC will send the RPC on it;
-	// - If it is not ready, or becomes not ready after it's returned, gRPC will block
-	//   until UpdateBalancerState() is called and will call pick on the new picker.
-	//
-	// If the returned error is not nil:
-	// - If the error is ErrNoSubConnAvailable, gRPC will block until UpdateBalancerState()
-	// - If the error is ErrTransientFailure:
-	//   - If the RPC is wait-for-ready, gRPC will block until UpdateBalancerState()
-	//     is called to pick again;
-	//   - Otherwise, RPC will fail with unavailable error.
-	// - Else (error is other non-nil error):
-	//   - The RPC will fail with unavailable error.
-	//
-	// The returned done() function will be called once the rpc has finished, with the
-	// final status of that RPC.
-	// done may be nil if balancer doesn't care about the RPC status.
-	Pick(ctx context.Context, opts PickOptions) (conn SubConn, done func(DoneInfo), err error)
-}
-
-// Balancer takes input from gRPC, manages SubConns, and collects and aggregates
-// the connectivity states.
-//
-// It also generates and updates the Picker used by gRPC to pick SubConns for RPCs.
-//
-// HandleSubConnectionStateChange, HandleResolvedAddrs and Close are guaranteed
-// to be called synchronously from the same goroutine.
-// There's no guarantee on picker.Pick, it may be called anytime.
-type Balancer interface {
-	// HandleSubConnStateChange is called by gRPC when the connectivity state
-	// of sc has changed.
-	// Balancer is expected to aggregate all the state of SubConn and report
-	// that back to gRPC.
-	// Balancer should also generate and update Pickers when its internal state has
-	// been changed by the new state.
-	HandleSubConnStateChange(sc SubConn, state connectivity.State)
-	// HandleResolvedAddrs is called by gRPC to send updated resolved addresses to
-	// balancers.
-	// Balancer can create new SubConn or remove SubConn with the addresses.
-	// An empty address slice and a non-nil error will be passed if the resolver returns
-	// non-nil error to gRPC.
-	HandleResolvedAddrs([]resolver.Address, error)
-	// Close closes the balancer. The balancer is not required to call
-	// ClientConn.RemoveSubConn for its existing SubConns.
-	Close()
-}
-
-// ConnectivityStateEvaluator takes the connectivity states of multiple SubConns
-// and returns one aggregated connectivity state.
-//
-// It's not thread safe.
-type ConnectivityStateEvaluator struct {
-	numReady            uint64 // Number of addrConns in ready state.
-	numConnecting       uint64 // Number of addrConns in connecting state.
-	numTransientFailure uint64 // Number of addrConns in transientFailure.
-}
-
-// RecordTransition records state change happening in subConn and based on that
-// it evaluates what aggregated state should be.
-//
-//  - If at least one SubConn in Ready, the aggregated state is Ready;
-//  - Else if at least one SubConn in Connecting, the aggregated state is Connecting;
-//  - Else the aggregated state is TransientFailure.
-//
-// Idle and Shutdown are not considered.
-func (cse *ConnectivityStateEvaluator) RecordTransition(oldState, newState connectivity.State) connectivity.State {
-	// Update counters.
-	for idx, state := range []connectivity.State{oldState, newState} {
-		updateVal := 2*uint64(idx) - 1 // -1 for oldState and +1 for new.
-		switch state {
-		case connectivity.Ready:
-			cse.numReady += updateVal
-		case connectivity.Connecting:
-			cse.numConnecting += updateVal
-		case connectivity.TransientFailure:
-			cse.numTransientFailure += updateVal
-		}
-	}
-
-	// Evaluate.
-	if cse.numReady > 0 {
-		return connectivity.Ready
-	}
-	if cse.numConnecting > 0 {
-		return connectivity.Connecting
-	}
-	return connectivity.TransientFailure
-}
diff --git a/vendor/google.golang.org/grpc/balancer/base/balancer.go b/vendor/google.golang.org/grpc/balancer/base/balancer.go
deleted file mode 100644
index 23d13511b..000000000
--- a/vendor/google.golang.org/grpc/balancer/base/balancer.go
+++ /dev/null
@@ -1,208 +0,0 @@
-/*
- *
- * Copyright 2017 gRPC authors.
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *     http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- *
- */
-
-package base
-
-import (
-	"golang.org/x/net/context"
-	"google.golang.org/grpc/balancer"
-	"google.golang.org/grpc/connectivity"
-	"google.golang.org/grpc/grpclog"
-	"google.golang.org/grpc/resolver"
-)
-
-type baseBuilder struct {
-	name          string
-	pickerBuilder PickerBuilder
-}
-
-func (bb *baseBuilder) Build(cc balancer.ClientConn, opt balancer.BuildOptions) balancer.Balancer {
-	return &baseBalancer{
-		cc:            cc,
-		pickerBuilder: bb.pickerBuilder,
-
-		subConns: make(map[resolver.Address]balancer.SubConn),
-		scStates: make(map[balancer.SubConn]connectivity.State),
-		csEvltr:  &connectivityStateEvaluator{},
-		// Initialize picker to a picker that always return
-		// ErrNoSubConnAvailable, because when state of a SubConn changes, we
-		// may call UpdateBalancerState with this picker.
-		picker: NewErrPicker(balancer.ErrNoSubConnAvailable),
-	}
-}
-
-func (bb *baseBuilder) Name() string {
-	return bb.name
-}
-
-type baseBalancer struct {
-	cc            balancer.ClientConn
-	pickerBuilder PickerBuilder
-
-	csEvltr *connectivityStateEvaluator
-	state   connectivity.State
-
-	subConns map[resolver.Address]balancer.SubConn
-	scStates map[balancer.SubConn]connectivity.State
-	picker   balancer.Picker
-}
-
-func (b *baseBalancer) HandleResolvedAddrs(addrs []resolver.Address, err error) {
-	if err != nil {
-		grpclog.Infof("base.baseBalancer: HandleResolvedAddrs called with error %v", err)
-		return
-	}
-	grpclog.Infoln("base.baseBalancer: got new resolved addresses: ", addrs)
-	// addrsSet is the set converted from addrs, it's used for quick lookup of an address.
-	addrsSet := make(map[resolver.Address]struct{})
-	for _, a := range addrs {
-		addrsSet[a] = struct{}{}
-		if _, ok := b.subConns[a]; !ok {
-			// a is a new address (not existing in b.subConns).
-			sc, err := b.cc.NewSubConn([]resolver.Address{a}, balancer.NewSubConnOptions{})
-			if err != nil {
-				grpclog.Warningf("base.baseBalancer: failed to create new SubConn: %v", err)
-				continue
-			}
-			b.subConns[a] = sc
-			b.scStates[sc] = connectivity.Idle
-			sc.Connect()
-		}
-	}
-	for a, sc := range b.subConns {
-		// a was removed by resolver.
-		if _, ok := addrsSet[a]; !ok {
-			b.cc.RemoveSubConn(sc)
-			delete(b.subConns, a)
-			// Keep the state of this sc in b.scStates until sc's state becomes Shutdown.
-			// The entry will be deleted in HandleSubConnStateChange.
-		}
-	}
-}
-
-// regeneratePicker takes a snapshot of the balancer, and generates a picker
-// from it. The picker is
-//  - errPicker with ErrTransientFailure if the balancer is in TransientFailure,
-//  - built by the pickerBuilder with all READY SubConns otherwise.
-func (b *baseBalancer) regeneratePicker() {
-	if b.state == connectivity.TransientFailure {
-		b.picker = NewErrPicker(balancer.ErrTransientFailure)
-		return
-	}
-	readySCs := make(map[resolver.Address]balancer.SubConn)
-
-	// Filter out all ready SCs from full subConn map.
-	for addr, sc := range b.subConns {
-		if st, ok := b.scStates[sc]; ok && st == connectivity.Ready {
-			readySCs[addr] = sc
-		}
-	}
-	b.picker = b.pickerBuilder.Build(readySCs)
-}
-
-func (b *baseBalancer) HandleSubConnStateChange(sc balancer.SubConn, s connectivity.State) {
-	grpclog.Infof("base.baseBalancer: handle SubConn state change: %p, %v", sc, s)
-	oldS, ok := b.scStates[sc]
-	if !ok {
-		grpclog.Infof("base.baseBalancer: got state changes for an unknown SubConn: %p, %v", sc, s)
-		return
-	}
-	b.scStates[sc] = s
-	switch s {
-	case connectivity.Idle:
-		sc.Connect()
-	case connectivity.Shutdown:
-		// When an address was removed by resolver, b called RemoveSubConn but
-		// kept the sc's state in scStates. Remove state for this sc here.
-		delete(b.scStates, sc)
-	}
-
-	oldAggrState := b.state
-	b.state = b.csEvltr.recordTransition(oldS, s)
-
-	// Regenerate picker when one of the following happens:
-	//  - this sc became ready from not-ready
-	//  - this sc became not-ready from ready
-	//  - the aggregated state of balancer became TransientFailure from non-TransientFailure
-	//  - the aggregated state of balancer became non-TransientFailure from TransientFailure
-	if (s == connectivity.Ready) != (oldS == connectivity.Ready) ||
-		(b.state == connectivity.TransientFailure) != (oldAggrState == connectivity.TransientFailure) {
-		b.regeneratePicker()
-	}
-
-	b.cc.UpdateBalancerState(b.state, b.picker)
-}
-
-// Close is a nop because base balancer doesn't have internal state to clean up,
-// and it doesn't need to call RemoveSubConn for the SubConns.
-func (b *baseBalancer) Close() {
-}
-
-// NewErrPicker returns a picker that always returns err on Pick().
-func NewErrPicker(err error) balancer.Picker {
-	return &errPicker{err: err}
-}
-
-type errPicker struct {
-	err error // Pick() always returns this err.
-}
-
-func (p *errPicker) Pick(ctx context.Context, opts balancer.PickOptions) (balancer.SubConn, func(balancer.DoneInfo), error) {
-	return nil, nil, p.err
-}
-
-// connectivityStateEvaluator gets updated by addrConns when their
-// states transition, based on which it evaluates the state of
-// ClientConn.
-type connectivityStateEvaluator struct {
-	numReady            uint64 // Number of addrConns in ready state.
-	numConnecting       uint64 // Number of addrConns in connecting state.
-	numTransientFailure uint64 // Number of addrConns in transientFailure.
-}
-
-// recordTransition records state change happening in every subConn and based on
-// that it evaluates what aggregated state should be.
-// It can only transition between Ready, Connecting and TransientFailure. Other states,
-// Idle and Shutdown are transitioned into by ClientConn; in the beginning of the connection
-// before any subConn is created ClientConn is in idle state. In the end when ClientConn
-// closes it is in Shutdown state.
-//
-// recordTransition should only be called synchronously from the same goroutine.
-func (cse *connectivityStateEvaluator) recordTransition(oldState, newState connectivity.State) connectivity.State {
-	// Update counters.
-	for idx, state := range []connectivity.State{oldState, newState} {
-		updateVal := 2*uint64(idx) - 1 // -1 for oldState and +1 for new.
-		switch state {
-		case connectivity.Ready:
-			cse.numReady += updateVal
-		case connectivity.Connecting:
-			cse.numConnecting += updateVal
-		case connectivity.TransientFailure:
-			cse.numTransientFailure += updateVal
-		}
-	}
-
-	// Evaluate.
-	if cse.numReady > 0 {
-		return connectivity.Ready
-	}
-	if cse.numConnecting > 0 {
-		return connectivity.Connecting
-	}
-	return connectivity.TransientFailure
-}
diff --git a/vendor/google.golang.org/grpc/balancer/base/base.go b/vendor/google.golang.org/grpc/balancer/base/base.go
deleted file mode 100644
index 012ace2f2..000000000
--- a/vendor/google.golang.org/grpc/balancer/base/base.go
+++ /dev/null
@@ -1,52 +0,0 @@
-/*
- *
- * Copyright 2017 gRPC authors.
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *     http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- *
- */
-
-// Package base defines a balancer base that can be used to build balancers with
-// different picking algorithms.
-//
-// The base balancer creates a new SubConn for each resolved address. The
-// provided picker will only be notified about READY SubConns.
-//
-// This package is the base of round_robin balancer, its purpose is to be used
-// to build round_robin like balancers with complex picking algorithms.
-// Balancers with more complicated logic should try to implement a balancer
-// builder from scratch.
-//
-// All APIs in this package are experimental.
-package base
-
-import (
-	"google.golang.org/grpc/balancer"
-	"google.golang.org/grpc/resolver"
-)
-
-// PickerBuilder creates balancer.Picker.
-type PickerBuilder interface {
-	// Build takes a slice of ready SubConns, and returns a picker that will be
-	// used by gRPC to pick a SubConn.
-	Build(readySCs map[resolver.Address]balancer.SubConn) balancer.Picker
-}
-
-// NewBalancerBuilder returns a balancer builder. The balancers
-// built by this builder will use the picker builder to build pickers.
-func NewBalancerBuilder(name string, pb PickerBuilder) balancer.Builder {
-	return &baseBuilder{
-		name:          name,
-		pickerBuilder: pb,
-	}
-}
diff --git a/vendor/google.golang.org/grpc/balancer/roundrobin/roundrobin.go b/vendor/google.golang.org/grpc/balancer/roundrobin/roundrobin.go
deleted file mode 100644
index 2eda0a1c2..000000000
--- a/vendor/google.golang.org/grpc/balancer/roundrobin/roundrobin.go
+++ /dev/null
@@ -1,79 +0,0 @@
-/*
- *
- * Copyright 2017 gRPC authors.
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *     http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- *
- */
-
-// Package roundrobin defines a roundrobin balancer. Roundrobin balancer is
-// installed as one of the default balancers in gRPC, users don't need to
-// explicitly install this balancer.
-package roundrobin
-
-import (
-	"sync"
-
-	"golang.org/x/net/context"
-	"google.golang.org/grpc/balancer"
-	"google.golang.org/grpc/balancer/base"
-	"google.golang.org/grpc/grpclog"
-	"google.golang.org/grpc/resolver"
-)
-
-// Name is the name of round_robin balancer.
-const Name = "round_robin"
-
-// newBuilder creates a new roundrobin balancer builder.
-func newBuilder() balancer.Builder {
-	return base.NewBalancerBuilder(Name, &rrPickerBuilder{})
-}
-
-func init() {
-	balancer.Register(newBuilder())
-}
-
-type rrPickerBuilder struct{}
-
-func (*rrPickerBuilder) Build(readySCs map[resolver.Address]balancer.SubConn) balancer.Picker {
-	grpclog.Infof("roundrobinPicker: newPicker called with readySCs: %v", readySCs)
-	var scs []balancer.SubConn
-	for _, sc := range readySCs {
-		scs = append(scs, sc)
-	}
-	return &rrPicker{
-		subConns: scs,
-	}
-}
-
-type rrPicker struct {
-	// subConns is the snapshot of the roundrobin balancer when this picker was
-	// created. The slice is immutable. Each Get() will do a round robin
-	// selection from it and return the selected SubConn.
-	subConns []balancer.SubConn
-
-	mu   sync.Mutex
-	next int
-}
-
-func (p *rrPicker) Pick(ctx context.Context, opts balancer.PickOptions) (balancer.SubConn, func(balancer.DoneInfo), error) {
-	if len(p.subConns) <= 0 {
-		return nil, nil, balancer.ErrNoSubConnAvailable
-	}
-
-	p.mu.Lock()
-	sc := p.subConns[p.next]
-	p.next = (p.next + 1) % len(p.subConns)
-	p.mu.Unlock()
-	return sc, nil, nil
-}
diff --git a/vendor/google.golang.org/grpc/balancer_conn_wrappers.go b/vendor/google.golang.org/grpc/balancer_conn_wrappers.go
deleted file mode 100644
index c23f81706..000000000
--- a/vendor/google.golang.org/grpc/balancer_conn_wrappers.go
+++ /dev/null
@@ -1,300 +0,0 @@
-/*
- *
- * Copyright 2017 gRPC authors.
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *     http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- *
- */
-
-package grpc
-
-import (
-	"fmt"
-	"sync"
-
-	"google.golang.org/grpc/balancer"
-	"google.golang.org/grpc/connectivity"
-	"google.golang.org/grpc/grpclog"
-	"google.golang.org/grpc/resolver"
-)
-
-// scStateUpdate contains the subConn and the new state it changed to.
-type scStateUpdate struct {
-	sc    balancer.SubConn
-	state connectivity.State
-}
-
-// scStateUpdateBuffer is an unbounded channel for scStateChangeTuple.
-// TODO make a general purpose buffer that uses interface{}.
-type scStateUpdateBuffer struct {
-	c       chan *scStateUpdate
-	mu      sync.Mutex
-	backlog []*scStateUpdate
-}
-
-func newSCStateUpdateBuffer() *scStateUpdateBuffer {
-	return &scStateUpdateBuffer{
-		c: make(chan *scStateUpdate, 1),
-	}
-}
-
-func (b *scStateUpdateBuffer) put(t *scStateUpdate) {
-	b.mu.Lock()
-	defer b.mu.Unlock()
-	if len(b.backlog) == 0 {
-		select {
-		case b.c <- t:
-			return
-		default:
-		}
-	}
-	b.backlog = append(b.backlog, t)
-}
-
-func (b *scStateUpdateBuffer) load() {
-	b.mu.Lock()
-	defer b.mu.Unlock()
-	if len(b.backlog) > 0 {
-		select {
-		case b.c <- b.backlog[0]:
-			b.backlog[0] = nil
-			b.backlog = b.backlog[1:]
-		default:
-		}
-	}
-}
-
-// get returns the channel that the scStateUpdate will be sent to.
-//
-// Upon receiving, the caller should call load to send another
-// scStateChangeTuple onto the channel if there is any.
-func (b *scStateUpdateBuffer) get() <-chan *scStateUpdate {
-	return b.c
-}
-
-// resolverUpdate contains the new resolved addresses or error if there's
-// any.
-type resolverUpdate struct {
-	addrs []resolver.Address
-	err   error
-}
-
-// ccBalancerWrapper is a wrapper on top of cc for balancers.
-// It implements balancer.ClientConn interface.
-type ccBalancerWrapper struct {
-	cc               *ClientConn
-	balancer         balancer.Balancer
-	stateChangeQueue *scStateUpdateBuffer
-	resolverUpdateCh chan *resolverUpdate
-	done             chan struct{}
-
-	mu       sync.Mutex
-	subConns map[*acBalancerWrapper]struct{}
-}
-
-func newCCBalancerWrapper(cc *ClientConn, b balancer.Builder, bopts balancer.BuildOptions) *ccBalancerWrapper {
-	ccb := &ccBalancerWrapper{
-		cc:               cc,
-		stateChangeQueue: newSCStateUpdateBuffer(),
-		resolverUpdateCh: make(chan *resolverUpdate, 1),
-		done:             make(chan struct{}),
-		subConns:         make(map[*acBalancerWrapper]struct{}),
-	}
-	go ccb.watcher()
-	ccb.balancer = b.Build(ccb, bopts)
-	return ccb
-}
-
-// watcher balancer functions sequentially, so the balancer can be implemented
-// lock-free.
-func (ccb *ccBalancerWrapper) watcher() {
-	for {
-		select {
-		case t := <-ccb.stateChangeQueue.get():
-			ccb.stateChangeQueue.load()
-			select {
-			case <-ccb.done:
-				ccb.balancer.Close()
-				return
-			default:
-			}
-			ccb.balancer.HandleSubConnStateChange(t.sc, t.state)
-		case t := <-ccb.resolverUpdateCh:
-			select {
-			case <-ccb.done:
-				ccb.balancer.Close()
-				return
-			default:
-			}
-			ccb.balancer.HandleResolvedAddrs(t.addrs, t.err)
-		case <-ccb.done:
-		}
-
-		select {
-		case <-ccb.done:
-			ccb.balancer.Close()
-			ccb.mu.Lock()
-			scs := ccb.subConns
-			ccb.subConns = nil
-			ccb.mu.Unlock()
-			for acbw := range scs {
-				ccb.cc.removeAddrConn(acbw.getAddrConn(), errConnDrain)
-			}
-			return
-		default:
-		}
-	}
-}
-
-func (ccb *ccBalancerWrapper) close() {
-	close(ccb.done)
-}
-
-func (ccb *ccBalancerWrapper) handleSubConnStateChange(sc balancer.SubConn, s connectivity.State) {
-	// When updating addresses for a SubConn, if the address in use is not in
-	// the new addresses, the old ac will be tearDown() and a new ac will be
-	// created. tearDown() generates a state change with Shutdown state, we
-	// don't want the balancer to receive this state change. So before
-	// tearDown() on the old ac, ac.acbw (acWrapper) will be set to nil, and
-	// this function will be called with (nil, Shutdown). We don't need to call
-	// balancer method in this case.
-	if sc == nil {
-		return
-	}
-	ccb.stateChangeQueue.put(&scStateUpdate{
-		sc:    sc,
-		state: s,
-	})
-}
-
-func (ccb *ccBalancerWrapper) handleResolvedAddrs(addrs []resolver.Address, err error) {
-	select {
-	case <-ccb.resolverUpdateCh:
-	default:
-	}
-	ccb.resolverUpdateCh <- &resolverUpdate{
-		addrs: addrs,
-		err:   err,
-	}
-}
-
-func (ccb *ccBalancerWrapper) NewSubConn(addrs []resolver.Address, opts balancer.NewSubConnOptions) (balancer.SubConn, error) {
-	if len(addrs) <= 0 {
-		return nil, fmt.Errorf("grpc: cannot create SubConn with empty address list")
-	}
-	ccb.mu.Lock()
-	defer ccb.mu.Unlock()
-	if ccb.subConns == nil {
-		return nil, fmt.Errorf("grpc: ClientConn balancer wrapper was closed")
-	}
-	ac, err := ccb.cc.newAddrConn(addrs)
-	if err != nil {
-		return nil, err
-	}
-	acbw := &acBalancerWrapper{ac: ac}
-	acbw.ac.mu.Lock()
-	ac.acbw = acbw
-	acbw.ac.mu.Unlock()
-	ccb.subConns[acbw] = struct{}{}
-	return acbw, nil
-}
-
-func (ccb *ccBalancerWrapper) RemoveSubConn(sc balancer.SubConn) {
-	acbw, ok := sc.(*acBalancerWrapper)
-	if !ok {
-		return
-	}
-	ccb.mu.Lock()
-	defer ccb.mu.Unlock()
-	if ccb.subConns == nil {
-		return
-	}
-	delete(ccb.subConns, acbw)
-	ccb.cc.removeAddrConn(acbw.getAddrConn(), errConnDrain)
-}
-
-func (ccb *ccBalancerWrapper) UpdateBalancerState(s connectivity.State, p balancer.Picker) {
-	ccb.mu.Lock()
-	defer ccb.mu.Unlock()
-	if ccb.subConns == nil {
-		return
-	}
-	ccb.cc.csMgr.updateState(s)
-	ccb.cc.blockingpicker.updatePicker(p)
-}
-
-func (ccb *ccBalancerWrapper) ResolveNow(o resolver.ResolveNowOption) {
-	ccb.cc.resolveNow(o)
-}
-
-func (ccb *ccBalancerWrapper) Target() string {
-	return ccb.cc.target
-}
-
-// acBalancerWrapper is a wrapper on top of ac for balancers.
-// It implements balancer.SubConn interface.
-type acBalancerWrapper struct {
-	mu sync.Mutex
-	ac *addrConn
-}
-
-func (acbw *acBalancerWrapper) UpdateAddresses(addrs []resolver.Address) {
-	acbw.mu.Lock()
-	defer acbw.mu.Unlock()
-	if len(addrs) <= 0 {
-		acbw.ac.tearDown(errConnDrain)
-		return
-	}
-	if !acbw.ac.tryUpdateAddrs(addrs) {
-		cc := acbw.ac.cc
-		acbw.ac.mu.Lock()
-		// Set old ac.acbw to nil so the Shutdown state update will be ignored
-		// by balancer.
-		//
-		// TODO(bar) the state transition could be wrong when tearDown() old ac
-		// and creating new ac, fix the transition.
-		acbw.ac.acbw = nil
-		acbw.ac.mu.Unlock()
-		acState := acbw.ac.getState()
-		acbw.ac.tearDown(errConnDrain)
-
-		if acState == connectivity.Shutdown {
-			return
-		}
-
-		ac, err := cc.newAddrConn(addrs)
-		if err != nil {
-			grpclog.Warningf("acBalancerWrapper: UpdateAddresses: failed to newAddrConn: %v", err)
-			return
-		}
-		acbw.ac = ac
-		ac.mu.Lock()
-		ac.acbw = acbw
-		ac.mu.Unlock()
-		if acState != connectivity.Idle {
-			ac.connect()
-		}
-	}
-}
-
-func (acbw *acBalancerWrapper) Connect() {
-	acbw.mu.Lock()
-	defer acbw.mu.Unlock()
-	acbw.ac.connect()
-}
-
-func (acbw *acBalancerWrapper) getAddrConn() *addrConn {
-	acbw.mu.Lock()
-	defer acbw.mu.Unlock()
-	return acbw.ac
-}
diff --git a/vendor/google.golang.org/grpc/balancer_v1_wrapper.go b/vendor/google.golang.org/grpc/balancer_v1_wrapper.go
deleted file mode 100644
index e0ce32cfb..000000000
--- a/vendor/google.golang.org/grpc/balancer_v1_wrapper.go
+++ /dev/null
@@ -1,328 +0,0 @@
-/*
- *
- * Copyright 2017 gRPC authors.
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *     http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- *
- */
-
-package grpc
-
-import (
-	"strings"
-	"sync"
-
-	"golang.org/x/net/context"
-	"google.golang.org/grpc/balancer"
-	"google.golang.org/grpc/codes"
-	"google.golang.org/grpc/connectivity"
-	"google.golang.org/grpc/grpclog"
-	"google.golang.org/grpc/resolver"
-	"google.golang.org/grpc/status"
-)
-
-type balancerWrapperBuilder struct {
-	b Balancer // The v1 balancer.
-}
-
-func (bwb *balancerWrapperBuilder) Build(cc balancer.ClientConn, opts balancer.BuildOptions) balancer.Balancer {
-	targetAddr := cc.Target()
-	targetSplitted := strings.Split(targetAddr, ":///")
-	if len(targetSplitted) >= 2 {
-		targetAddr = targetSplitted[1]
-	}
-
-	bwb.b.Start(targetAddr, BalancerConfig{
-		DialCreds: opts.DialCreds,
-		Dialer:    opts.Dialer,
-	})
-	_, pickfirst := bwb.b.(*pickFirst)
-	bw := &balancerWrapper{
-		balancer:   bwb.b,
-		pickfirst:  pickfirst,
-		cc:         cc,
-		targetAddr: targetAddr,
-		startCh:    make(chan struct{}),
-		conns:      make(map[resolver.Address]balancer.SubConn),
-		connSt:     make(map[balancer.SubConn]*scState),
-		csEvltr:    &balancer.ConnectivityStateEvaluator{},
-		state:      connectivity.Idle,
-	}
-	cc.UpdateBalancerState(connectivity.Idle, bw)
-	go bw.lbWatcher()
-	return bw
-}
-
-func (bwb *balancerWrapperBuilder) Name() string {
-	return "wrapper"
-}
-
-type scState struct {
-	addr Address // The v1 address type.
-	s    connectivity.State
-	down func(error)
-}
-
-type balancerWrapper struct {
-	balancer  Balancer // The v1 balancer.
-	pickfirst bool
-
-	cc         balancer.ClientConn
-	targetAddr string // Target without the scheme.
-
-	mu     sync.Mutex
-	conns  map[resolver.Address]balancer.SubConn
-	connSt map[balancer.SubConn]*scState
-	// This channel is closed when handling the first resolver result.
-	// lbWatcher blocks until this is closed, to avoid race between
-	// - NewSubConn is created, cc wants to notify balancer of state changes;
-	// - Build hasn't return, cc doesn't have access to balancer.
-	startCh chan struct{}
-
-	// To aggregate the connectivity state.
-	csEvltr *balancer.ConnectivityStateEvaluator
-	state   connectivity.State
-}
-
-// lbWatcher watches the Notify channel of the balancer and manages
-// connections accordingly.
-func (bw *balancerWrapper) lbWatcher() {
-	<-bw.startCh
-	notifyCh := bw.balancer.Notify()
-	if notifyCh == nil {
-		// There's no resolver in the balancer. Connect directly.
-		a := resolver.Address{
-			Addr: bw.targetAddr,
-			Type: resolver.Backend,
-		}
-		sc, err := bw.cc.NewSubConn([]resolver.Address{a}, balancer.NewSubConnOptions{})
-		if err != nil {
-			grpclog.Warningf("Error creating connection to %v. Err: %v", a, err)
-		} else {
-			bw.mu.Lock()
-			bw.conns[a] = sc
-			bw.connSt[sc] = &scState{
-				addr: Address{Addr: bw.targetAddr},
-				s:    connectivity.Idle,
-			}
-			bw.mu.Unlock()
-			sc.Connect()
-		}
-		return
-	}
-
-	for addrs := range notifyCh {
-		grpclog.Infof("balancerWrapper: got update addr from Notify: %v\n", addrs)
-		if bw.pickfirst {
-			var (
-				oldA  resolver.Address
-				oldSC balancer.SubConn
-			)
-			bw.mu.Lock()
-			for oldA, oldSC = range bw.conns {
-				break
-			}
-			bw.mu.Unlock()
-			if len(addrs) <= 0 {
-				if oldSC != nil {
-					// Teardown old sc.
-					bw.mu.Lock()
-					delete(bw.conns, oldA)
-					delete(bw.connSt, oldSC)
-					bw.mu.Unlock()
-					bw.cc.RemoveSubConn(oldSC)
-				}
-				continue
-			}
-
-			var newAddrs []resolver.Address
-			for _, a := range addrs {
-				newAddr := resolver.Address{
-					Addr:       a.Addr,
-					Type:       resolver.Backend, // All addresses from balancer are all backends.
-					ServerName: "",
-					Metadata:   a.Metadata,
-				}
-				newAddrs = append(newAddrs, newAddr)
-			}
-			if oldSC == nil {
-				// Create new sc.
-				sc, err := bw.cc.NewSubConn(newAddrs, balancer.NewSubConnOptions{})
-				if err != nil {
-					grpclog.Warningf("Error creating connection to %v. Err: %v", newAddrs, err)
-				} else {
-					bw.mu.Lock()
-					// For pickfirst, there should be only one SubConn, so the
-					// address doesn't matter. All states updating (up and down)
-					// and picking should all happen on that only SubConn.
-					bw.conns[resolver.Address{}] = sc
-					bw.connSt[sc] = &scState{
-						addr: addrs[0], // Use the first address.
-						s:    connectivity.Idle,
-					}
-					bw.mu.Unlock()
-					sc.Connect()
-				}
-			} else {
-				bw.mu.Lock()
-				bw.connSt[oldSC].addr = addrs[0]
-				bw.mu.Unlock()
-				oldSC.UpdateAddresses(newAddrs)
-			}
-		} else {
-			var (
-				add []resolver.Address // Addresses need to setup connections.
-				del []balancer.SubConn // Connections need to tear down.
-			)
-			resAddrs := make(map[resolver.Address]Address)
-			for _, a := range addrs {
-				resAddrs[resolver.Address{
-					Addr:       a.Addr,
-					Type:       resolver.Backend, // All addresses from balancer are all backends.
-					ServerName: "",
-					Metadata:   a.Metadata,
-				}] = a
-			}
-			bw.mu.Lock()
-			for a := range resAddrs {
-				if _, ok := bw.conns[a]; !ok {
-					add = append(add, a)
-				}
-			}
-			for a, c := range bw.conns {
-				if _, ok := resAddrs[a]; !ok {
-					del = append(del, c)
-					delete(bw.conns, a)
-					// Keep the state of this sc in bw.connSt until its state becomes Shutdown.
-				}
-			}
-			bw.mu.Unlock()
-			for _, a := range add {
-				sc, err := bw.cc.NewSubConn([]resolver.Address{a}, balancer.NewSubConnOptions{})
-				if err != nil {
-					grpclog.Warningf("Error creating connection to %v. Err: %v", a, err)
-				} else {
-					bw.mu.Lock()
-					bw.conns[a] = sc
-					bw.connSt[sc] = &scState{
-						addr: resAddrs[a],
-						s:    connectivity.Idle,
-					}
-					bw.mu.Unlock()
-					sc.Connect()
-				}
-			}
-			for _, c := range del {
-				bw.cc.RemoveSubConn(c)
-			}
-		}
-	}
-}
-
-func (bw *balancerWrapper) HandleSubConnStateChange(sc balancer.SubConn, s connectivity.State) {
-	bw.mu.Lock()
-	defer bw.mu.Unlock()
-	scSt, ok := bw.connSt[sc]
-	if !ok {
-		return
-	}
-	if s == connectivity.Idle {
-		sc.Connect()
-	}
-	oldS := scSt.s
-	scSt.s = s
-	if oldS != connectivity.Ready && s == connectivity.Ready {
-		scSt.down = bw.balancer.Up(scSt.addr)
-	} else if oldS == connectivity.Ready && s != connectivity.Ready {
-		if scSt.down != nil {
-			scSt.down(errConnClosing)
-		}
-	}
-	sa := bw.csEvltr.RecordTransition(oldS, s)
-	if bw.state != sa {
-		bw.state = sa
-	}
-	bw.cc.UpdateBalancerState(bw.state, bw)
-	if s == connectivity.Shutdown {
-		// Remove state for this sc.
-		delete(bw.connSt, sc)
-	}
-}
-
-func (bw *balancerWrapper) HandleResolvedAddrs([]resolver.Address, error) {
-	bw.mu.Lock()
-	defer bw.mu.Unlock()
-	select {
-	case <-bw.startCh:
-	default:
-		close(bw.startCh)
-	}
-	// There should be a resolver inside the balancer.
-	// All updates here, if any, are ignored.
-}
-
-func (bw *balancerWrapper) Close() {
-	bw.mu.Lock()
-	defer bw.mu.Unlock()
-	select {
-	case <-bw.startCh:
-	default:
-		close(bw.startCh)
-	}
-	bw.balancer.Close()
-}
-
-// The picker is the balancerWrapper itself.
-// Pick should never return ErrNoSubConnAvailable.
-// It either blocks or returns error, consistent with v1 balancer Get().
-func (bw *balancerWrapper) Pick(ctx context.Context, opts balancer.PickOptions) (balancer.SubConn, func(balancer.DoneInfo), error) {
-	failfast := true // Default failfast is true.
-	if ss, ok := rpcInfoFromContext(ctx); ok {
-		failfast = ss.failfast
-	}
-	a, p, err := bw.balancer.Get(ctx, BalancerGetOptions{BlockingWait: !failfast})
-	if err != nil {
-		return nil, nil, err
-	}
-	var done func(balancer.DoneInfo)
-	if p != nil {
-		done = func(i balancer.DoneInfo) { p() }
-	}
-	var sc balancer.SubConn
-	bw.mu.Lock()
-	defer bw.mu.Unlock()
-	if bw.pickfirst {
-		// Get the first sc in conns.
-		for _, sc = range bw.conns {
-			break
-		}
-	} else {
-		var ok bool
-		sc, ok = bw.conns[resolver.Address{
-			Addr:       a.Addr,
-			Type:       resolver.Backend,
-			ServerName: "",
-			Metadata:   a.Metadata,
-		}]
-		if !ok && failfast {
-			return nil, nil, status.Errorf(codes.Unavailable, "there is no connection available")
-		}
-		if s, ok := bw.connSt[sc]; failfast && (!ok || s.s != connectivity.Ready) {
-			// If the returned sc is not ready and RPC is failfast,
-			// return error, and this RPC will fail.
-			return nil, nil, status.Errorf(codes.Unavailable, "there is no connection available")
-		}
-	}
-
-	return sc, done, nil
-}
diff --git a/vendor/google.golang.org/grpc/call.go b/vendor/google.golang.org/grpc/call.go
deleted file mode 100644
index f73b7d552..000000000
--- a/vendor/google.golang.org/grpc/call.go
+++ /dev/null
@@ -1,93 +0,0 @@
-/*
- *
- * Copyright 2014 gRPC authors.
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *     http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- *
- */
-
-package grpc
-
-import (
-	"golang.org/x/net/context"
-)
-
-// Invoke sends the RPC request on the wire and returns after response is
-// received.  This is typically called by generated code.
-//
-// All errors returned by Invoke are compatible with the status package.
-func (cc *ClientConn) Invoke(ctx context.Context, method string, args, reply interface{}, opts ...CallOption) error {
-	// allow interceptor to see all applicable call options, which means those
-	// configured as defaults from dial option as well as per-call options
-	opts = combine(cc.dopts.callOptions, opts)
-
-	if cc.dopts.unaryInt != nil {
-		return cc.dopts.unaryInt(ctx, method, args, reply, cc, invoke, opts...)
-	}
-	return invoke(ctx, method, args, reply, cc, opts...)
-}
-
-func combine(o1 []CallOption, o2 []CallOption) []CallOption {
-	// we don't use append because o1 could have extra capacity whose
-	// elements would be overwritten, which could cause inadvertent
-	// sharing (and race connditions) between concurrent calls
-	if len(o1) == 0 {
-		return o2
-	} else if len(o2) == 0 {
-		return o1
-	}
-	ret := make([]CallOption, len(o1)+len(o2))
-	copy(ret, o1)
-	copy(ret[len(o1):], o2)
-	return ret
-}
-
-// Invoke sends the RPC request on the wire and returns after response is
-// received.  This is typically called by generated code.
-//
-// DEPRECATED: Use ClientConn.Invoke instead.
-func Invoke(ctx context.Context, method string, args, reply interface{}, cc *ClientConn, opts ...CallOption) error {
-	return cc.Invoke(ctx, method, args, reply, opts...)
-}
-
-var unaryStreamDesc = &StreamDesc{ServerStreams: false, ClientStreams: false}
-
-func invoke(ctx context.Context, method string, req, reply interface{}, cc *ClientConn, opts ...CallOption) error {
-	// TODO: implement retries in clientStream and make this simply
-	// newClientStream, SendMsg, RecvMsg.
-	firstAttempt := true
-	for {
-		csInt, err := newClientStream(ctx, unaryStreamDesc, cc, method, opts...)
-		if err != nil {
-			return err
-		}
-		cs := csInt.(*clientStream)
-		if err := cs.SendMsg(req); err != nil {
-			if !cs.c.failFast && cs.attempt.s.Unprocessed() && firstAttempt {
-				// TODO: Add a field to header for grpc-transparent-retry-attempts
-				firstAttempt = false
-				continue
-			}
-			return err
-		}
-		if err := cs.RecvMsg(reply); err != nil {
-			if !cs.c.failFast && cs.attempt.s.Unprocessed() && firstAttempt {
-				// TODO: Add a field to header for grpc-transparent-retry-attempts
-				firstAttempt = false
-				continue
-			}
-			return err
-		}
-		return nil
-	}
-}
diff --git a/vendor/google.golang.org/grpc/clientconn.go b/vendor/google.golang.org/grpc/clientconn.go
deleted file mode 100644
index 84ba9e5ad..000000000
--- a/vendor/google.golang.org/grpc/clientconn.go
+++ /dev/null
@@ -1,1602 +0,0 @@
-/*
- *
- * Copyright 2014 gRPC authors.
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *     http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- *
- */
-
-package grpc
-
-import (
-	"errors"
-	"fmt"
-	"math"
-	"net"
-	"reflect"
-	"strings"
-	"sync"
-	"time"
-
-	"golang.org/x/net/context"
-	"golang.org/x/net/trace"
-	"google.golang.org/grpc/balancer"
-	_ "google.golang.org/grpc/balancer/roundrobin" // To register roundrobin.
-	"google.golang.org/grpc/codes"
-	"google.golang.org/grpc/connectivity"
-	"google.golang.org/grpc/credentials"
-	"google.golang.org/grpc/grpclog"
-	"google.golang.org/grpc/internal"
-	"google.golang.org/grpc/internal/backoff"
-	"google.golang.org/grpc/internal/channelz"
-	"google.golang.org/grpc/keepalive"
-	"google.golang.org/grpc/resolver"
-	_ "google.golang.org/grpc/resolver/dns"         // To register dns resolver.
-	_ "google.golang.org/grpc/resolver/passthrough" // To register passthrough resolver.
-	"google.golang.org/grpc/stats"
-	"google.golang.org/grpc/status"
-	"google.golang.org/grpc/transport"
-)
-
-const (
-	// minimum time to give a connection to complete
-	minConnectTimeout = 20 * time.Second
-	// must match grpclbName in grpclb/grpclb.go
-	grpclbName = "grpclb"
-)
-
-var (
-	// ErrClientConnClosing indicates that the operation is illegal because
-	// the ClientConn is closing.
-	//
-	// Deprecated: this error should not be relied upon by users; use the status
-	// code of Canceled instead.
-	ErrClientConnClosing = status.Error(codes.Canceled, "grpc: the client connection is closing")
-	// errConnDrain indicates that the connection starts to be drained and does not accept any new RPCs.
-	errConnDrain = errors.New("grpc: the connection is drained")
-	// errConnClosing indicates that the connection is closing.
-	errConnClosing = errors.New("grpc: the connection is closing")
-	// errConnUnavailable indicates that the connection is unavailable.
-	errConnUnavailable = errors.New("grpc: the connection is unavailable")
-	// errBalancerClosed indicates that the balancer is closed.
-	errBalancerClosed = errors.New("grpc: balancer is closed")
-	// We use an accessor so that minConnectTimeout can be
-	// atomically read and updated while testing.
-	getMinConnectTimeout = func() time.Duration {
-		return minConnectTimeout
-	}
-)
-
-// The following errors are returned from Dial and DialContext
-var (
-	// errNoTransportSecurity indicates that there is no transport security
-	// being set for ClientConn. Users should either set one or explicitly
-	// call WithInsecure DialOption to disable security.
-	errNoTransportSecurity = errors.New("grpc: no transport security set (use grpc.WithInsecure() explicitly or set credentials)")
-	// errTransportCredentialsMissing indicates that users want to transmit security
-	// information (e.g., oauth2 token) which requires secure connection on an insecure
-	// connection.
-	errTransportCredentialsMissing = errors.New("grpc: the credentials require transport level security (use grpc.WithTransportCredentials() to set)")
-	// errCredentialsConflict indicates that grpc.WithTransportCredentials()
-	// and grpc.WithInsecure() are both called for a connection.
-	errCredentialsConflict = errors.New("grpc: transport credentials are set for an insecure connection (grpc.WithTransportCredentials() and grpc.WithInsecure() are both called)")
-	// errNetworkIO indicates that the connection is down due to some network I/O error.
-	errNetworkIO = errors.New("grpc: failed with network I/O error")
-)
-
-// dialOptions configure a Dial call. dialOptions are set by the DialOption
-// values passed to Dial.
-type dialOptions struct {
-	unaryInt    UnaryClientInterceptor
-	streamInt   StreamClientInterceptor
-	cp          Compressor
-	dc          Decompressor
-	bs          backoff.Strategy
-	block       bool
-	insecure    bool
-	timeout     time.Duration
-	scChan      <-chan ServiceConfig
-	copts       transport.ConnectOptions
-	callOptions []CallOption
-	// This is used by v1 balancer dial option WithBalancer to support v1
-	// balancer, and also by WithBalancerName dial option.
-	balancerBuilder balancer.Builder
-	// This is to support grpclb.
-	resolverBuilder      resolver.Builder
-	waitForHandshake     bool
-	channelzParentID     int64
-	disableServiceConfig bool
-}
-
-const (
-	defaultClientMaxReceiveMessageSize = 1024 * 1024 * 4
-	defaultClientMaxSendMessageSize    = math.MaxInt32
-)
-
-// RegisterChannelz turns on channelz service.
-// This is an EXPERIMENTAL API.
-func RegisterChannelz() {
-	channelz.TurnOn()
-}
-
-// DialOption configures how we set up the connection.
-type DialOption func(*dialOptions)
-
-// WithWaitForHandshake blocks until the initial settings frame is received from the
-// server before assigning RPCs to the connection.
-// Experimental API.
-func WithWaitForHandshake() DialOption {
-	return func(o *dialOptions) {
-		o.waitForHandshake = true
-	}
-}
-
-// WithWriteBufferSize lets you set the size of write buffer, this determines how much data can be batched
-// before doing a write on the wire.
-func WithWriteBufferSize(s int) DialOption {
-	return func(o *dialOptions) {
-		o.copts.WriteBufferSize = s
-	}
-}
-
-// WithReadBufferSize lets you set the size of read buffer, this determines how much data can be read at most
-// for each read syscall.
-func WithReadBufferSize(s int) DialOption {
-	return func(o *dialOptions) {
-		o.copts.ReadBufferSize = s
-	}
-}
-
-// WithInitialWindowSize returns a DialOption which sets the value for initial window size on a stream.
-// The lower bound for window size is 64K and any value smaller than that will be ignored.
-func WithInitialWindowSize(s int32) DialOption {
-	return func(o *dialOptions) {
-		o.copts.InitialWindowSize = s
-	}
-}
-
-// WithInitialConnWindowSize returns a DialOption which sets the value for initial window size on a connection.
-// The lower bound for window size is 64K and any value smaller than that will be ignored.
-func WithInitialConnWindowSize(s int32) DialOption {
-	return func(o *dialOptions) {
-		o.copts.InitialConnWindowSize = s
-	}
-}
-
-// WithMaxMsgSize returns a DialOption which sets the maximum message size the client can receive.
-//
-// Deprecated: use WithDefaultCallOptions(MaxCallRecvMsgSize(s)) instead.
-func WithMaxMsgSize(s int) DialOption {
-	return WithDefaultCallOptions(MaxCallRecvMsgSize(s))
-}
-
-// WithDefaultCallOptions returns a DialOption which sets the default CallOptions for calls over the connection.
-func WithDefaultCallOptions(cos ...CallOption) DialOption {
-	return func(o *dialOptions) {
-		o.callOptions = append(o.callOptions, cos...)
-	}
-}
-
-// WithCodec returns a DialOption which sets a codec for message marshaling and unmarshaling.
-//
-// Deprecated: use WithDefaultCallOptions(CallCustomCodec(c)) instead.
-func WithCodec(c Codec) DialOption {
-	return WithDefaultCallOptions(CallCustomCodec(c))
-}
-
-// WithCompressor returns a DialOption which sets a Compressor to use for
-// message compression. It has lower priority than the compressor set by
-// the UseCompressor CallOption.
-//
-// Deprecated: use UseCompressor instead.
-func WithCompressor(cp Compressor) DialOption {
-	return func(o *dialOptions) {
-		o.cp = cp
-	}
-}
-
-// WithDecompressor returns a DialOption which sets a Decompressor to use for
-// incoming message decompression.  If incoming response messages are encoded
-// using the decompressor's Type(), it will be used.  Otherwise, the message
-// encoding will be used to look up the compressor registered via
-// encoding.RegisterCompressor, which will then be used to decompress the
-// message.  If no compressor is registered for the encoding, an Unimplemented
-// status error will be returned.
-//
-// Deprecated: use encoding.RegisterCompressor instead.
-func WithDecompressor(dc Decompressor) DialOption {
-	return func(o *dialOptions) {
-		o.dc = dc
-	}
-}
-
-// WithBalancer returns a DialOption which sets a load balancer with the v1 API.
-// Name resolver will be ignored if this DialOption is specified.
-//
-// Deprecated: use the new balancer APIs in balancer package and WithBalancerName.
-func WithBalancer(b Balancer) DialOption {
-	return func(o *dialOptions) {
-		o.balancerBuilder = &balancerWrapperBuilder{
-			b: b,
-		}
-	}
-}
-
-// WithBalancerName sets the balancer that the ClientConn will be initialized
-// with. Balancer registered with balancerName will be used. This function
-// panics if no balancer was registered by balancerName.
-//
-// The balancer cannot be overridden by balancer option specified by service
-// config.
-//
-// This is an EXPERIMENTAL API.
-func WithBalancerName(balancerName string) DialOption {
-	builder := balancer.Get(balancerName)
-	if builder == nil {
-		panic(fmt.Sprintf("grpc.WithBalancerName: no balancer is registered for name %v", balancerName))
-	}
-	return func(o *dialOptions) {
-		o.balancerBuilder = builder
-	}
-}
-
-// withResolverBuilder is only for grpclb.
-func withResolverBuilder(b resolver.Builder) DialOption {
-	return func(o *dialOptions) {
-		o.resolverBuilder = b
-	}
-}
-
-// WithServiceConfig returns a DialOption which has a channel to read the service configuration.
-//
-// Deprecated: service config should be received through name resolver, as specified here.
-// https://github.com/grpc/grpc/blob/master/doc/service_config.md
-func WithServiceConfig(c <-chan ServiceConfig) DialOption {
-	return func(o *dialOptions) {
-		o.scChan = c
-	}
-}
-
-// WithBackoffMaxDelay configures the dialer to use the provided maximum delay
-// when backing off after failed connection attempts.
-func WithBackoffMaxDelay(md time.Duration) DialOption {
-	return WithBackoffConfig(BackoffConfig{MaxDelay: md})
-}
-
-// WithBackoffConfig configures the dialer to use the provided backoff
-// parameters after connection failures.
-//
-// Use WithBackoffMaxDelay until more parameters on BackoffConfig are opened up
-// for use.
-func WithBackoffConfig(b BackoffConfig) DialOption {
-
-	return withBackoff(backoff.Exponential{
-		MaxDelay: b.MaxDelay,
-	})
-}
-
-// withBackoff sets the backoff strategy used for connectRetryNum after a
-// failed connection attempt.
-//
-// This can be exported if arbitrary backoff strategies are allowed by gRPC.
-func withBackoff(bs backoff.Strategy) DialOption {
-	return func(o *dialOptions) {
-		o.bs = bs
-	}
-}
-
-// WithBlock returns a DialOption which makes caller of Dial blocks until the underlying
-// connection is up. Without this, Dial returns immediately and connecting the server
-// happens in background.
-func WithBlock() DialOption {
-	return func(o *dialOptions) {
-		o.block = true
-	}
-}
-
-// WithInsecure returns a DialOption which disables transport security for this ClientConn.
-// Note that transport security is required unless WithInsecure is set.
-func WithInsecure() DialOption {
-	return func(o *dialOptions) {
-		o.insecure = true
-	}
-}
-
-// WithTransportCredentials returns a DialOption which configures a
-// connection level security credentials (e.g., TLS/SSL).
-func WithTransportCredentials(creds credentials.TransportCredentials) DialOption {
-	return func(o *dialOptions) {
-		o.copts.TransportCredentials = creds
-	}
-}
-
-// WithPerRPCCredentials returns a DialOption which sets
-// credentials and places auth state on each outbound RPC.
-func WithPerRPCCredentials(creds credentials.PerRPCCredentials) DialOption {
-	return func(o *dialOptions) {
-		o.copts.PerRPCCredentials = append(o.copts.PerRPCCredentials, creds)
-	}
-}
-
-// WithTimeout returns a DialOption that configures a timeout for dialing a ClientConn
-// initially. This is valid if and only if WithBlock() is present.
-//
-// Deprecated: use DialContext and context.WithTimeout instead.
-func WithTimeout(d time.Duration) DialOption {
-	return func(o *dialOptions) {
-		o.timeout = d
-	}
-}
-
-func withContextDialer(f func(context.Context, string) (net.Conn, error)) DialOption {
-	return func(o *dialOptions) {
-		o.copts.Dialer = f
-	}
-}
-
-func init() {
-	internal.WithContextDialer = withContextDialer
-	internal.WithResolverBuilder = withResolverBuilder
-}
-
-// WithDialer returns a DialOption that specifies a function to use for dialing network addresses.
-// If FailOnNonTempDialError() is set to true, and an error is returned by f, gRPC checks the error's
-// Temporary() method to decide if it should try to reconnect to the network address.
-func WithDialer(f func(string, time.Duration) (net.Conn, error)) DialOption {
-	return withContextDialer(
-		func(ctx context.Context, addr string) (net.Conn, error) {
-			if deadline, ok := ctx.Deadline(); ok {
-				return f(addr, deadline.Sub(time.Now()))
-			}
-			return f(addr, 0)
-		})
-}
-
-// WithStatsHandler returns a DialOption that specifies the stats handler
-// for all the RPCs and underlying network connections in this ClientConn.
-func WithStatsHandler(h stats.Handler) DialOption {
-	return func(o *dialOptions) {
-		o.copts.StatsHandler = h
-	}
-}
-
-// FailOnNonTempDialError returns a DialOption that specifies if gRPC fails on non-temporary dial errors.
-// If f is true, and dialer returns a non-temporary error, gRPC will fail the connection to the network
-// address and won't try to reconnect.
-// The default value of FailOnNonTempDialError is false.
-// This is an EXPERIMENTAL API.
-func FailOnNonTempDialError(f bool) DialOption {
-	return func(o *dialOptions) {
-		o.copts.FailOnNonTempDialError = f
-	}
-}
-
-// WithUserAgent returns a DialOption that specifies a user agent string for all the RPCs.
-func WithUserAgent(s string) DialOption {
-	return func(o *dialOptions) {
-		o.copts.UserAgent = s
-	}
-}
-
-// WithKeepaliveParams returns a DialOption that specifies keepalive parameters for the client transport.
-func WithKeepaliveParams(kp keepalive.ClientParameters) DialOption {
-	return func(o *dialOptions) {
-		o.copts.KeepaliveParams = kp
-	}
-}
-
-// WithUnaryInterceptor returns a DialOption that specifies the interceptor for unary RPCs.
-func WithUnaryInterceptor(f UnaryClientInterceptor) DialOption {
-	return func(o *dialOptions) {
-		o.unaryInt = f
-	}
-}
-
-// WithStreamInterceptor returns a DialOption that specifies the interceptor for streaming RPCs.
-func WithStreamInterceptor(f StreamClientInterceptor) DialOption {
-	return func(o *dialOptions) {
-		o.streamInt = f
-	}
-}
-
-// WithAuthority returns a DialOption that specifies the value to be used as
-// the :authority pseudo-header. This value only works with WithInsecure and
-// has no effect if TransportCredentials are present.
-func WithAuthority(a string) DialOption {
-	return func(o *dialOptions) {
-		o.copts.Authority = a
-	}
-}
-
-// WithChannelzParentID returns a DialOption that specifies the channelz ID of current ClientConn's
-// parent. This function is used in nested channel creation (e.g. grpclb dial).
-func WithChannelzParentID(id int64) DialOption {
-	return func(o *dialOptions) {
-		o.channelzParentID = id
-	}
-}
-
-// WithDisableServiceConfig returns a DialOption that causes grpc to ignore any
-// service config provided by the resolver and provides a hint to the resolver
-// to not fetch service configs.
-func WithDisableServiceConfig() DialOption {
-	return func(o *dialOptions) {
-		o.disableServiceConfig = true
-	}
-}
-
-// Dial creates a client connection to the given target.
-func Dial(target string, opts ...DialOption) (*ClientConn, error) {
-	return DialContext(context.Background(), target, opts...)
-}
-
-// DialContext creates a client connection to the given target. By default, it's
-// a non-blocking dial (the function won't wait for connections to be
-// established, and connecting happens in the background). To make it a blocking
-// dial, use WithBlock() dial option.
-//
-// In the non-blocking case, the ctx does not act against the connection. It
-// only controls the setup steps.
-//
-// In the blocking case, ctx can be used to cancel or expire the pending
-// connection. Once this function returns, the cancellation and expiration of
-// ctx will be noop. Users should call ClientConn.Close to terminate all the
-// pending operations after this function returns.
-//
-// The target name syntax is defined in
-// https://github.com/grpc/grpc/blob/master/doc/naming.md.
-// e.g. to use dns resolver, a "dns:///" prefix should be applied to the target.
-func DialContext(ctx context.Context, target string, opts ...DialOption) (conn *ClientConn, err error) {
-	cc := &ClientConn{
-		target: target,
-		csMgr:  &connectivityStateManager{},
-		conns:  make(map[*addrConn]struct{}),
-
-		blockingpicker: newPickerWrapper(),
-	}
-	cc.ctx, cc.cancel = context.WithCancel(context.Background())
-
-	for _, opt := range opts {
-		opt(&cc.dopts)
-	}
-
-	if channelz.IsOn() {
-		if cc.dopts.channelzParentID != 0 {
-			cc.channelzID = channelz.RegisterChannel(cc, cc.dopts.channelzParentID, target)
-		} else {
-			cc.channelzID = channelz.RegisterChannel(cc, 0, target)
-		}
-	}
-
-	if !cc.dopts.insecure {
-		if cc.dopts.copts.TransportCredentials == nil {
-			return nil, errNoTransportSecurity
-		}
-	} else {
-		if cc.dopts.copts.TransportCredentials != nil {
-			return nil, errCredentialsConflict
-		}
-		for _, cd := range cc.dopts.copts.PerRPCCredentials {
-			if cd.RequireTransportSecurity() {
-				return nil, errTransportCredentialsMissing
-			}
-		}
-	}
-
-	cc.mkp = cc.dopts.copts.KeepaliveParams
-
-	if cc.dopts.copts.Dialer == nil {
-		cc.dopts.copts.Dialer = newProxyDialer(
-			func(ctx context.Context, addr string) (net.Conn, error) {
-				network, addr := parseDialTarget(addr)
-				return dialContext(ctx, network, addr)
-			},
-		)
-	}
-
-	if cc.dopts.copts.UserAgent != "" {
-		cc.dopts.copts.UserAgent += " " + grpcUA
-	} else {
-		cc.dopts.copts.UserAgent = grpcUA
-	}
-
-	if cc.dopts.timeout > 0 {
-		var cancel context.CancelFunc
-		ctx, cancel = context.WithTimeout(ctx, cc.dopts.timeout)
-		defer cancel()
-	}
-
-	defer func() {
-		select {
-		case <-ctx.Done():
-			conn, err = nil, ctx.Err()
-		default:
-		}
-
-		if err != nil {
-			cc.Close()
-		}
-	}()
-
-	scSet := false
-	if cc.dopts.scChan != nil {
-		// Try to get an initial service config.
-		select {
-		case sc, ok := <-cc.dopts.scChan:
-			if ok {
-				cc.sc = sc
-				scSet = true
-			}
-		default:
-		}
-	}
-	if cc.dopts.bs == nil {
-		cc.dopts.bs = backoff.Exponential{
-			MaxDelay: DefaultBackoffConfig.MaxDelay,
-		}
-	}
-	if cc.dopts.resolverBuilder == nil {
-		// Only try to parse target when resolver builder is not already set.
-		cc.parsedTarget = parseTarget(cc.target)
-		grpclog.Infof("parsed scheme: %q", cc.parsedTarget.Scheme)
-		cc.dopts.resolverBuilder = resolver.Get(cc.parsedTarget.Scheme)
-		if cc.dopts.resolverBuilder == nil {
-			// If resolver builder is still nil, the parse target's scheme is
-			// not registered. Fallback to default resolver and set Endpoint to
-			// the original unparsed target.
-			grpclog.Infof("scheme %q not registered, fallback to default scheme", cc.parsedTarget.Scheme)
-			cc.parsedTarget = resolver.Target{
-				Scheme:   resolver.GetDefaultScheme(),
-				Endpoint: target,
-			}
-			cc.dopts.resolverBuilder = resolver.Get(cc.parsedTarget.Scheme)
-		}
-	} else {
-		cc.parsedTarget = resolver.Target{Endpoint: target}
-	}
-	creds := cc.dopts.copts.TransportCredentials
-	if creds != nil && creds.Info().ServerName != "" {
-		cc.authority = creds.Info().ServerName
-	} else if cc.dopts.insecure && cc.dopts.copts.Authority != "" {
-		cc.authority = cc.dopts.copts.Authority
-	} else {
-		// Use endpoint from "scheme://authority/endpoint" as the default
-		// authority for ClientConn.
-		cc.authority = cc.parsedTarget.Endpoint
-	}
-
-	if cc.dopts.scChan != nil && !scSet {
-		// Blocking wait for the initial service config.
-		select {
-		case sc, ok := <-cc.dopts.scChan:
-			if ok {
-				cc.sc = sc
-			}
-		case <-ctx.Done():
-			return nil, ctx.Err()
-		}
-	}
-	if cc.dopts.scChan != nil {
-		go cc.scWatcher()
-	}
-
-	var credsClone credentials.TransportCredentials
-	if creds := cc.dopts.copts.TransportCredentials; creds != nil {
-		credsClone = creds.Clone()
-	}
-	cc.balancerBuildOpts = balancer.BuildOptions{
-		DialCreds:        credsClone,
-		Dialer:           cc.dopts.copts.Dialer,
-		ChannelzParentID: cc.channelzID,
-	}
-
-	// Build the resolver.
-	cc.resolverWrapper, err = newCCResolverWrapper(cc)
-	if err != nil {
-		return nil, fmt.Errorf("failed to build resolver: %v", err)
-	}
-	// Start the resolver wrapper goroutine after resolverWrapper is created.
-	//
-	// If the goroutine is started before resolverWrapper is ready, the
-	// following may happen: The goroutine sends updates to cc. cc forwards
-	// those to balancer. Balancer creates new addrConn. addrConn fails to
-	// connect, and calls resolveNow(). resolveNow() tries to use the non-ready
-	// resolverWrapper.
-	cc.resolverWrapper.start()
-
-	// A blocking dial blocks until the clientConn is ready.
-	if cc.dopts.block {
-		for {
-			s := cc.GetState()
-			if s == connectivity.Ready {
-				break
-			}
-			if !cc.WaitForStateChange(ctx, s) {
-				// ctx got timeout or canceled.
-				return nil, ctx.Err()
-			}
-		}
-	}
-
-	return cc, nil
-}
-
-// connectivityStateManager keeps the connectivity.State of ClientConn.
-// This struct will eventually be exported so the balancers can access it.
-type connectivityStateManager struct {
-	mu         sync.Mutex
-	state      connectivity.State
-	notifyChan chan struct{}
-}
-
-// updateState updates the connectivity.State of ClientConn.
-// If there's a change it notifies goroutines waiting on state change to
-// happen.
-func (csm *connectivityStateManager) updateState(state connectivity.State) {
-	csm.mu.Lock()
-	defer csm.mu.Unlock()
-	if csm.state == connectivity.Shutdown {
-		return
-	}
-	if csm.state == state {
-		return
-	}
-	csm.state = state
-	if csm.notifyChan != nil {
-		// There are other goroutines waiting on this channel.
-		close(csm.notifyChan)
-		csm.notifyChan = nil
-	}
-}
-
-func (csm *connectivityStateManager) getState() connectivity.State {
-	csm.mu.Lock()
-	defer csm.mu.Unlock()
-	return csm.state
-}
-
-func (csm *connectivityStateManager) getNotifyChan() <-chan struct{} {
-	csm.mu.Lock()
-	defer csm.mu.Unlock()
-	if csm.notifyChan == nil {
-		csm.notifyChan = make(chan struct{})
-	}
-	return csm.notifyChan
-}
-
-// ClientConn represents a client connection to an RPC server.
-type ClientConn struct {
-	ctx    context.Context
-	cancel context.CancelFunc
-
-	target       string
-	parsedTarget resolver.Target
-	authority    string
-	dopts        dialOptions
-	csMgr        *connectivityStateManager
-
-	balancerBuildOpts balancer.BuildOptions
-	resolverWrapper   *ccResolverWrapper
-	blockingpicker    *pickerWrapper
-
-	mu    sync.RWMutex
-	sc    ServiceConfig
-	scRaw string
-	conns map[*addrConn]struct{}
-	// Keepalive parameter can be updated if a GoAway is received.
-	mkp             keepalive.ClientParameters
-	curBalancerName string
-	preBalancerName string // previous balancer name.
-	curAddresses    []resolver.Address
-	balancerWrapper *ccBalancerWrapper
-
-	channelzID          int64 // channelz unique identification number
-	czmu                sync.RWMutex
-	callsStarted        int64
-	callsSucceeded      int64
-	callsFailed         int64
-	lastCallStartedTime time.Time
-}
-
-// WaitForStateChange waits until the connectivity.State of ClientConn changes from sourceState or
-// ctx expires. A true value is returned in former case and false in latter.
-// This is an EXPERIMENTAL API.
-func (cc *ClientConn) WaitForStateChange(ctx context.Context, sourceState connectivity.State) bool {
-	ch := cc.csMgr.getNotifyChan()
-	if cc.csMgr.getState() != sourceState {
-		return true
-	}
-	select {
-	case <-ctx.Done():
-		return false
-	case <-ch:
-		return true
-	}
-}
-
-// GetState returns the connectivity.State of ClientConn.
-// This is an EXPERIMENTAL API.
-func (cc *ClientConn) GetState() connectivity.State {
-	return cc.csMgr.getState()
-}
-
-func (cc *ClientConn) scWatcher() {
-	for {
-		select {
-		case sc, ok := <-cc.dopts.scChan:
-			if !ok {
-				return
-			}
-			cc.mu.Lock()
-			// TODO: load balance policy runtime change is ignored.
-			// We may revist this decision in the future.
-			cc.sc = sc
-			cc.scRaw = ""
-			cc.mu.Unlock()
-		case <-cc.ctx.Done():
-			return
-		}
-	}
-}
-
-func (cc *ClientConn) handleResolvedAddrs(addrs []resolver.Address, err error) {
-	cc.mu.Lock()
-	defer cc.mu.Unlock()
-	if cc.conns == nil {
-		// cc was closed.
-		return
-	}
-
-	if reflect.DeepEqual(cc.curAddresses, addrs) {
-		return
-	}
-
-	cc.curAddresses = addrs
-
-	if cc.dopts.balancerBuilder == nil {
-		// Only look at balancer types and switch balancer if balancer dial
-		// option is not set.
-		var isGRPCLB bool
-		for _, a := range addrs {
-			if a.Type == resolver.GRPCLB {
-				isGRPCLB = true
-				break
-			}
-		}
-		var newBalancerName string
-		if isGRPCLB {
-			newBalancerName = grpclbName
-		} else {
-			// Address list doesn't contain grpclb address. Try to pick a
-			// non-grpclb balancer.
-			newBalancerName = cc.curBalancerName
-			// If current balancer is grpclb, switch to the previous one.
-			if newBalancerName == grpclbName {
-				newBalancerName = cc.preBalancerName
-			}
-			// The following could be true in two cases:
-			// - the first time handling resolved addresses
-			//   (curBalancerName="")
-			// - the first time handling non-grpclb addresses
-			//   (curBalancerName="grpclb", preBalancerName="")
-			if newBalancerName == "" {
-				newBalancerName = PickFirstBalancerName
-			}
-		}
-		cc.switchBalancer(newBalancerName)
-	} else if cc.balancerWrapper == nil {
-		// Balancer dial option was set, and this is the first time handling
-		// resolved addresses. Build a balancer with dopts.balancerBuilder.
-		cc.balancerWrapper = newCCBalancerWrapper(cc, cc.dopts.balancerBuilder, cc.balancerBuildOpts)
-	}
-
-	cc.balancerWrapper.handleResolvedAddrs(addrs, nil)
-}
-
-// switchBalancer starts the switching from current balancer to the balancer
-// with the given name.
-//
-// It will NOT send the current address list to the new balancer. If needed,
-// caller of this function should send address list to the new balancer after
-// this function returns.
-//
-// Caller must hold cc.mu.
-func (cc *ClientConn) switchBalancer(name string) {
-	if cc.conns == nil {
-		return
-	}
-
-	if strings.ToLower(cc.curBalancerName) == strings.ToLower(name) {
-		return
-	}
-
-	grpclog.Infof("ClientConn switching balancer to %q", name)
-	if cc.dopts.balancerBuilder != nil {
-		grpclog.Infoln("ignoring balancer switching: Balancer DialOption used instead")
-		return
-	}
-	// TODO(bar switching) change this to two steps: drain and close.
-	// Keep track of sc in wrapper.
-	if cc.balancerWrapper != nil {
-		cc.balancerWrapper.close()
-	}
-	// Clear all stickiness state.
-	cc.blockingpicker.clearStickinessState()
-
-	builder := balancer.Get(name)
-	if builder == nil {
-		grpclog.Infof("failed to get balancer builder for: %v, using pick_first instead", name)
-		builder = newPickfirstBuilder()
-	}
-	cc.preBalancerName = cc.curBalancerName
-	cc.curBalancerName = builder.Name()
-	cc.balancerWrapper = newCCBalancerWrapper(cc, builder, cc.balancerBuildOpts)
-}
-
-func (cc *ClientConn) handleSubConnStateChange(sc balancer.SubConn, s connectivity.State) {
-	cc.mu.Lock()
-	if cc.conns == nil {
-		cc.mu.Unlock()
-		return
-	}
-	// TODO(bar switching) send updates to all balancer wrappers when balancer
-	// gracefully switching is supported.
-	cc.balancerWrapper.handleSubConnStateChange(sc, s)
-	cc.mu.Unlock()
-}
-
-// newAddrConn creates an addrConn for addrs and adds it to cc.conns.
-//
-// Caller needs to make sure len(addrs) > 0.
-func (cc *ClientConn) newAddrConn(addrs []resolver.Address) (*addrConn, error) {
-	ac := &addrConn{
-		cc:    cc,
-		addrs: addrs,
-		dopts: cc.dopts,
-	}
-	ac.ctx, ac.cancel = context.WithCancel(cc.ctx)
-	// Track ac in cc. This needs to be done before any getTransport(...) is called.
-	cc.mu.Lock()
-	if cc.conns == nil {
-		cc.mu.Unlock()
-		return nil, ErrClientConnClosing
-	}
-	if channelz.IsOn() {
-		ac.channelzID = channelz.RegisterSubChannel(ac, cc.channelzID, "")
-	}
-	cc.conns[ac] = struct{}{}
-	cc.mu.Unlock()
-	return ac, nil
-}
-
-// removeAddrConn removes the addrConn in the subConn from clientConn.
-// It also tears down the ac with the given error.
-func (cc *ClientConn) removeAddrConn(ac *addrConn, err error) {
-	cc.mu.Lock()
-	if cc.conns == nil {
-		cc.mu.Unlock()
-		return
-	}
-	delete(cc.conns, ac)
-	cc.mu.Unlock()
-	ac.tearDown(err)
-}
-
-// ChannelzMetric returns ChannelInternalMetric of current ClientConn.
-// This is an EXPERIMENTAL API.
-func (cc *ClientConn) ChannelzMetric() *channelz.ChannelInternalMetric {
-	state := cc.GetState()
-	cc.czmu.RLock()
-	defer cc.czmu.RUnlock()
-	return &channelz.ChannelInternalMetric{
-		State:                    state,
-		Target:                   cc.target,
-		CallsStarted:             cc.callsStarted,
-		CallsSucceeded:           cc.callsSucceeded,
-		CallsFailed:              cc.callsFailed,
-		LastCallStartedTimestamp: cc.lastCallStartedTime,
-	}
-}
-
-func (cc *ClientConn) incrCallsStarted() {
-	cc.czmu.Lock()
-	cc.callsStarted++
-	// TODO(yuxuanli): will make this a time.Time pointer improve performance?
-	cc.lastCallStartedTime = time.Now()
-	cc.czmu.Unlock()
-}
-
-func (cc *ClientConn) incrCallsSucceeded() {
-	cc.czmu.Lock()
-	cc.callsSucceeded++
-	cc.czmu.Unlock()
-}
-
-func (cc *ClientConn) incrCallsFailed() {
-	cc.czmu.Lock()
-	cc.callsFailed++
-	cc.czmu.Unlock()
-}
-
-// connect starts to creating transport and also starts the transport monitor
-// goroutine for this ac.
-// It does nothing if the ac is not IDLE.
-// TODO(bar) Move this to the addrConn section.
-// This was part of resetAddrConn, keep it here to make the diff look clean.
-func (ac *addrConn) connect() error {
-	ac.mu.Lock()
-	if ac.state == connectivity.Shutdown {
-		ac.mu.Unlock()
-		return errConnClosing
-	}
-	if ac.state != connectivity.Idle {
-		ac.mu.Unlock()
-		return nil
-	}
-	ac.state = connectivity.Connecting
-	ac.cc.handleSubConnStateChange(ac.acbw, ac.state)
-	ac.mu.Unlock()
-
-	// Start a goroutine connecting to the server asynchronously.
-	go func() {
-		if err := ac.resetTransport(); err != nil {
-			grpclog.Warningf("Failed to dial %s: %v; please retry.", ac.addrs[0].Addr, err)
-			if err != errConnClosing {
-				// Keep this ac in cc.conns, to get the reason it's torn down.
-				ac.tearDown(err)
-			}
-			return
-		}
-		ac.transportMonitor()
-	}()
-	return nil
-}
-
-// tryUpdateAddrs tries to update ac.addrs with the new addresses list.
-//
-// It checks whether current connected address of ac is in the new addrs list.
-//  - If true, it updates ac.addrs and returns true. The ac will keep using
-//    the existing connection.
-//  - If false, it does nothing and returns false.
-func (ac *addrConn) tryUpdateAddrs(addrs []resolver.Address) bool {
-	ac.mu.Lock()
-	defer ac.mu.Unlock()
-	grpclog.Infof("addrConn: tryUpdateAddrs curAddr: %v, addrs: %v", ac.curAddr, addrs)
-	if ac.state == connectivity.Shutdown {
-		ac.addrs = addrs
-		return true
-	}
-
-	var curAddrFound bool
-	for _, a := range addrs {
-		if reflect.DeepEqual(ac.curAddr, a) {
-			curAddrFound = true
-			break
-		}
-	}
-	grpclog.Infof("addrConn: tryUpdateAddrs curAddrFound: %v", curAddrFound)
-	if curAddrFound {
-		ac.addrs = addrs
-		ac.reconnectIdx = 0 // Start reconnecting from beginning in the new list.
-	}
-
-	return curAddrFound
-}
-
-// GetMethodConfig gets the method config of the input method.
-// If there's an exact match for input method (i.e. /service/method), we return
-// the corresponding MethodConfig.
-// If there isn't an exact match for the input method, we look for the default config
-// under the service (i.e /service/). If there is a default MethodConfig for
-// the service, we return it.
-// Otherwise, we return an empty MethodConfig.
-func (cc *ClientConn) GetMethodConfig(method string) MethodConfig {
-	// TODO: Avoid the locking here.
-	cc.mu.RLock()
-	defer cc.mu.RUnlock()
-	m, ok := cc.sc.Methods[method]
-	if !ok {
-		i := strings.LastIndex(method, "/")
-		m = cc.sc.Methods[method[:i+1]]
-	}
-	return m
-}
-
-func (cc *ClientConn) getTransport(ctx context.Context, failfast bool) (transport.ClientTransport, func(balancer.DoneInfo), error) {
-	t, done, err := cc.blockingpicker.pick(ctx, failfast, balancer.PickOptions{})
-	if err != nil {
-		return nil, nil, toRPCErr(err)
-	}
-	return t, done, nil
-}
-
-// handleServiceConfig parses the service config string in JSON format to Go native
-// struct ServiceConfig, and store both the struct and the JSON string in ClientConn.
-func (cc *ClientConn) handleServiceConfig(js string) error {
-	if cc.dopts.disableServiceConfig {
-		return nil
-	}
-	sc, err := parseServiceConfig(js)
-	if err != nil {
-		return err
-	}
-	cc.mu.Lock()
-	cc.scRaw = js
-	cc.sc = sc
-	if sc.LB != nil && *sc.LB != grpclbName { // "grpclb" is not a valid balancer option in service config.
-		if cc.curBalancerName == grpclbName {
-			// If current balancer is grpclb, there's at least one grpclb
-			// balancer address in the resolved list. Don't switch the balancer,
-			// but change the previous balancer name, so if a new resolved
-			// address list doesn't contain grpclb address, balancer will be
-			// switched to *sc.LB.
-			cc.preBalancerName = *sc.LB
-		} else {
-			cc.switchBalancer(*sc.LB)
-			cc.balancerWrapper.handleResolvedAddrs(cc.curAddresses, nil)
-		}
-	}
-
-	if envConfigStickinessOn {
-		var newStickinessMDKey string
-		if sc.stickinessMetadataKey != nil && *sc.stickinessMetadataKey != "" {
-			newStickinessMDKey = *sc.stickinessMetadataKey
-		}
-		// newStickinessMDKey is "" if one of the following happens:
-		// - stickinessMetadataKey is set to ""
-		// - stickinessMetadataKey field doesn't exist in service config
-		cc.blockingpicker.updateStickinessMDKey(strings.ToLower(newStickinessMDKey))
-	}
-
-	cc.mu.Unlock()
-	return nil
-}
-
-func (cc *ClientConn) resolveNow(o resolver.ResolveNowOption) {
-	cc.mu.RLock()
-	r := cc.resolverWrapper
-	cc.mu.RUnlock()
-	if r == nil {
-		return
-	}
-	go r.resolveNow(o)
-}
-
-// Close tears down the ClientConn and all underlying connections.
-func (cc *ClientConn) Close() error {
-	defer cc.cancel()
-
-	cc.mu.Lock()
-	if cc.conns == nil {
-		cc.mu.Unlock()
-		return ErrClientConnClosing
-	}
-	conns := cc.conns
-	cc.conns = nil
-	cc.csMgr.updateState(connectivity.Shutdown)
-
-	rWrapper := cc.resolverWrapper
-	cc.resolverWrapper = nil
-	bWrapper := cc.balancerWrapper
-	cc.balancerWrapper = nil
-	cc.mu.Unlock()
-
-	cc.blockingpicker.close()
-
-	if rWrapper != nil {
-		rWrapper.close()
-	}
-	if bWrapper != nil {
-		bWrapper.close()
-	}
-
-	for ac := range conns {
-		ac.tearDown(ErrClientConnClosing)
-	}
-	if channelz.IsOn() {
-		channelz.RemoveEntry(cc.channelzID)
-	}
-	return nil
-}
-
-// addrConn is a network connection to a given address.
-type addrConn struct {
-	ctx    context.Context
-	cancel context.CancelFunc
-
-	cc     *ClientConn
-	addrs  []resolver.Address
-	dopts  dialOptions
-	events trace.EventLog
-	acbw   balancer.SubConn
-
-	mu           sync.Mutex
-	curAddr      resolver.Address
-	reconnectIdx int // The index in addrs list to start reconnecting from.
-	state        connectivity.State
-	// ready is closed and becomes nil when a new transport is up or failed
-	// due to timeout.
-	ready     chan struct{}
-	transport transport.ClientTransport
-
-	// The reason this addrConn is torn down.
-	tearDownErr error
-
-	connectRetryNum int
-	// backoffDeadline is the time until which resetTransport needs to
-	// wait before increasing connectRetryNum count.
-	backoffDeadline time.Time
-	// connectDeadline is the time by which all connection
-	// negotiations must complete.
-	connectDeadline time.Time
-
-	channelzID          int64 // channelz unique identification number
-	czmu                sync.RWMutex
-	callsStarted        int64
-	callsSucceeded      int64
-	callsFailed         int64
-	lastCallStartedTime time.Time
-}
-
-// adjustParams updates parameters used to create transports upon
-// receiving a GoAway.
-func (ac *addrConn) adjustParams(r transport.GoAwayReason) {
-	switch r {
-	case transport.GoAwayTooManyPings:
-		v := 2 * ac.dopts.copts.KeepaliveParams.Time
-		ac.cc.mu.Lock()
-		if v > ac.cc.mkp.Time {
-			ac.cc.mkp.Time = v
-		}
-		ac.cc.mu.Unlock()
-	}
-}
-
-// printf records an event in ac's event log, unless ac has been closed.
-// REQUIRES ac.mu is held.
-func (ac *addrConn) printf(format string, a ...interface{}) {
-	if ac.events != nil {
-		ac.events.Printf(format, a...)
-	}
-}
-
-// errorf records an error in ac's event log, unless ac has been closed.
-// REQUIRES ac.mu is held.
-func (ac *addrConn) errorf(format string, a ...interface{}) {
-	if ac.events != nil {
-		ac.events.Errorf(format, a...)
-	}
-}
-
-// resetTransport recreates a transport to the address for ac.  The old
-// transport will close itself on error or when the clientconn is closed.
-// The created transport must receive initial settings frame from the server.
-// In case that doesn't happen, transportMonitor will kill the newly created
-// transport after connectDeadline has expired.
-// In case there was an error on the transport before the settings frame was
-// received, resetTransport resumes connecting to backends after the one that
-// was previously connected to. In case end of the list is reached, resetTransport
-// backs off until the original deadline.
-// If the DialOption WithWaitForHandshake was set, resetTrasport returns
-// successfully only after server settings are received.
-//
-// TODO(bar) make sure all state transitions are valid.
-func (ac *addrConn) resetTransport() error {
-	ac.mu.Lock()
-	if ac.state == connectivity.Shutdown {
-		ac.mu.Unlock()
-		return errConnClosing
-	}
-	if ac.ready != nil {
-		close(ac.ready)
-		ac.ready = nil
-	}
-	ac.transport = nil
-	ridx := ac.reconnectIdx
-	ac.mu.Unlock()
-	ac.cc.mu.RLock()
-	ac.dopts.copts.KeepaliveParams = ac.cc.mkp
-	ac.cc.mu.RUnlock()
-	var backoffDeadline, connectDeadline time.Time
-	for connectRetryNum := 0; ; connectRetryNum++ {
-		ac.mu.Lock()
-		if ac.backoffDeadline.IsZero() {
-			// This means either a successful HTTP2 connection was established
-			// or this is the first time this addrConn is trying to establish a
-			// connection.
-			backoffFor := ac.dopts.bs.Backoff(connectRetryNum) // time.Duration.
-			// This will be the duration that dial gets to finish.
-			dialDuration := getMinConnectTimeout()
-			if backoffFor > dialDuration {
-				// Give dial more time as we keep failing to connect.
-				dialDuration = backoffFor
-			}
-			start := time.Now()
-			backoffDeadline = start.Add(backoffFor)
-			connectDeadline = start.Add(dialDuration)
-			ridx = 0 // Start connecting from the beginning.
-		} else {
-			// Continue trying to connect with the same deadlines.
-			connectRetryNum = ac.connectRetryNum
-			backoffDeadline = ac.backoffDeadline
-			connectDeadline = ac.connectDeadline
-			ac.backoffDeadline = time.Time{}
-			ac.connectDeadline = time.Time{}
-			ac.connectRetryNum = 0
-		}
-		if ac.state == connectivity.Shutdown {
-			ac.mu.Unlock()
-			return errConnClosing
-		}
-		ac.printf("connecting")
-		if ac.state != connectivity.Connecting {
-			ac.state = connectivity.Connecting
-			ac.cc.handleSubConnStateChange(ac.acbw, ac.state)
-		}
-		// copy ac.addrs in case of race
-		addrsIter := make([]resolver.Address, len(ac.addrs))
-		copy(addrsIter, ac.addrs)
-		copts := ac.dopts.copts
-		ac.mu.Unlock()
-		connected, err := ac.createTransport(connectRetryNum, ridx, backoffDeadline, connectDeadline, addrsIter, copts)
-		if err != nil {
-			return err
-		}
-		if connected {
-			return nil
-		}
-	}
-}
-
-// createTransport creates a connection to one of the backends in addrs.
-// It returns true if a connection was established.
-func (ac *addrConn) createTransport(connectRetryNum, ridx int, backoffDeadline, connectDeadline time.Time, addrs []resolver.Address, copts transport.ConnectOptions) (bool, error) {
-	for i := ridx; i < len(addrs); i++ {
-		addr := addrs[i]
-		target := transport.TargetInfo{
-			Addr:      addr.Addr,
-			Metadata:  addr.Metadata,
-			Authority: ac.cc.authority,
-		}
-		done := make(chan struct{})
-		onPrefaceReceipt := func() {
-			ac.mu.Lock()
-			close(done)
-			if !ac.backoffDeadline.IsZero() {
-				// If we haven't already started reconnecting to
-				// other backends.
-				// Note, this can happen when writer notices an error
-				// and triggers resetTransport while at the same time
-				// reader receives the preface and invokes this closure.
-				ac.backoffDeadline = time.Time{}
-				ac.connectDeadline = time.Time{}
-				ac.connectRetryNum = 0
-			}
-			ac.mu.Unlock()
-		}
-		// Do not cancel in the success path because of
-		// this issue in Go1.6: https://github.com/golang/go/issues/15078.
-		connectCtx, cancel := context.WithDeadline(ac.ctx, connectDeadline)
-		if channelz.IsOn() {
-			copts.ChannelzParentID = ac.channelzID
-		}
-		newTr, err := transport.NewClientTransport(connectCtx, ac.cc.ctx, target, copts, onPrefaceReceipt)
-		if err != nil {
-			cancel()
-			ac.cc.blockingpicker.updateConnectionError(err)
-			ac.mu.Lock()
-			if ac.state == connectivity.Shutdown {
-				// ac.tearDown(...) has been invoked.
-				ac.mu.Unlock()
-				return false, errConnClosing
-			}
-			ac.mu.Unlock()
-			grpclog.Warningf("grpc: addrConn.createTransport failed to connect to %v. Err :%v. Reconnecting...", addr, err)
-			continue
-		}
-		if ac.dopts.waitForHandshake {
-			select {
-			case <-done:
-			case <-connectCtx.Done():
-				// Didn't receive server preface, must kill this new transport now.
-				grpclog.Warningf("grpc: addrConn.createTransport failed to receive server preface before deadline.")
-				newTr.Close()
-				break
-			case <-ac.ctx.Done():
-			}
-		}
-		ac.mu.Lock()
-		if ac.state == connectivity.Shutdown {
-			ac.mu.Unlock()
-			// ac.tearDonn(...) has been invoked.
-			newTr.Close()
-			return false, errConnClosing
-		}
-		ac.printf("ready")
-		ac.state = connectivity.Ready
-		ac.cc.handleSubConnStateChange(ac.acbw, ac.state)
-		ac.transport = newTr
-		ac.curAddr = addr
-		if ac.ready != nil {
-			close(ac.ready)
-			ac.ready = nil
-		}
-		select {
-		case <-done:
-			// If the server has responded back with preface already,
-			// don't set the reconnect parameters.
-		default:
-			ac.connectRetryNum = connectRetryNum
-			ac.backoffDeadline = backoffDeadline
-			ac.connectDeadline = connectDeadline
-			ac.reconnectIdx = i + 1 // Start reconnecting from the next backend in the list.
-		}
-		ac.mu.Unlock()
-		return true, nil
-	}
-	ac.mu.Lock()
-	if ac.state == connectivity.Shutdown {
-		ac.mu.Unlock()
-		return false, errConnClosing
-	}
-	ac.state = connectivity.TransientFailure
-	ac.cc.handleSubConnStateChange(ac.acbw, ac.state)
-	ac.cc.resolveNow(resolver.ResolveNowOption{})
-	if ac.ready != nil {
-		close(ac.ready)
-		ac.ready = nil
-	}
-	ac.mu.Unlock()
-	timer := time.NewTimer(backoffDeadline.Sub(time.Now()))
-	select {
-	case <-timer.C:
-	case <-ac.ctx.Done():
-		timer.Stop()
-		return false, ac.ctx.Err()
-	}
-	return false, nil
-}
-
-// Run in a goroutine to track the error in transport and create the
-// new transport if an error happens. It returns when the channel is closing.
-func (ac *addrConn) transportMonitor() {
-	for {
-		var timer *time.Timer
-		var cdeadline <-chan time.Time
-		ac.mu.Lock()
-		t := ac.transport
-		if !ac.connectDeadline.IsZero() {
-			timer = time.NewTimer(ac.connectDeadline.Sub(time.Now()))
-			cdeadline = timer.C
-		}
-		ac.mu.Unlock()
-		// Block until we receive a goaway or an error occurs.
-		select {
-		case <-t.GoAway():
-			done := t.Error()
-			cleanup := t.Close
-			// Since this transport will be orphaned (won't have a transportMonitor)
-			// we need to launch a goroutine to keep track of clientConn.Close()
-			// happening since it might not be noticed by any other goroutine for a while.
-			go func() {
-				<-done
-				cleanup()
-			}()
-		case <-t.Error():
-			// In case this is triggered because clientConn.Close()
-			// was called, we want to immeditately close the transport
-			// since no other goroutine might notice it for a while.
-			t.Close()
-		case <-cdeadline:
-			ac.mu.Lock()
-			// This implies that client received server preface.
-			if ac.backoffDeadline.IsZero() {
-				ac.mu.Unlock()
-				continue
-			}
-			ac.mu.Unlock()
-			timer = nil
-			// No server preface received until deadline.
-			// Kill the connection.
-			grpclog.Warningf("grpc: addrConn.transportMonitor didn't get server preface after waiting. Closing the new transport now.")
-			t.Close()
-		}
-		if timer != nil {
-			timer.Stop()
-		}
-		// If a GoAway happened, regardless of error, adjust our keepalive
-		// parameters as appropriate.
-		select {
-		case <-t.GoAway():
-			ac.adjustParams(t.GetGoAwayReason())
-		default:
-		}
-		ac.mu.Lock()
-		if ac.state == connectivity.Shutdown {
-			ac.mu.Unlock()
-			return
-		}
-		// Set connectivity state to TransientFailure before calling
-		// resetTransport. Transition READY->CONNECTING is not valid.
-		ac.state = connectivity.TransientFailure
-		ac.cc.handleSubConnStateChange(ac.acbw, ac.state)
-		ac.cc.resolveNow(resolver.ResolveNowOption{})
-		ac.curAddr = resolver.Address{}
-		ac.mu.Unlock()
-		if err := ac.resetTransport(); err != nil {
-			ac.mu.Lock()
-			ac.printf("transport exiting: %v", err)
-			ac.mu.Unlock()
-			grpclog.Warningf("grpc: addrConn.transportMonitor exits due to: %v", err)
-			if err != errConnClosing {
-				// Keep this ac in cc.conns, to get the reason it's torn down.
-				ac.tearDown(err)
-			}
-			return
-		}
-	}
-}
-
-// wait blocks until i) the new transport is up or ii) ctx is done or iii) ac is closed or
-// iv) transport is in connectivity.TransientFailure and there is a balancer/failfast is true.
-func (ac *addrConn) wait(ctx context.Context, hasBalancer, failfast bool) (transport.ClientTransport, error) {
-	for {
-		ac.mu.Lock()
-		switch {
-		case ac.state == connectivity.Shutdown:
-			if failfast || !hasBalancer {
-				// RPC is failfast or balancer is nil. This RPC should fail with ac.tearDownErr.
-				err := ac.tearDownErr
-				ac.mu.Unlock()
-				return nil, err
-			}
-			ac.mu.Unlock()
-			return nil, errConnClosing
-		case ac.state == connectivity.Ready:
-			ct := ac.transport
-			ac.mu.Unlock()
-			return ct, nil
-		case ac.state == connectivity.TransientFailure:
-			if failfast || hasBalancer {
-				ac.mu.Unlock()
-				return nil, errConnUnavailable
-			}
-		}
-		ready := ac.ready
-		if ready == nil {
-			ready = make(chan struct{})
-			ac.ready = ready
-		}
-		ac.mu.Unlock()
-		select {
-		case <-ctx.Done():
-			return nil, toRPCErr(ctx.Err())
-		// Wait until the new transport is ready or failed.
-		case <-ready:
-		}
-	}
-}
-
-// getReadyTransport returns the transport if ac's state is READY.
-// Otherwise it returns nil, false.
-// If ac's state is IDLE, it will trigger ac to connect.
-func (ac *addrConn) getReadyTransport() (transport.ClientTransport, bool) {
-	ac.mu.Lock()
-	if ac.state == connectivity.Ready {
-		t := ac.transport
-		ac.mu.Unlock()
-		return t, true
-	}
-	var idle bool
-	if ac.state == connectivity.Idle {
-		idle = true
-	}
-	ac.mu.Unlock()
-	// Trigger idle ac to connect.
-	if idle {
-		ac.connect()
-	}
-	return nil, false
-}
-
-// tearDown starts to tear down the addrConn.
-// TODO(zhaoq): Make this synchronous to avoid unbounded memory consumption in
-// some edge cases (e.g., the caller opens and closes many addrConn's in a
-// tight loop.
-// tearDown doesn't remove ac from ac.cc.conns.
-func (ac *addrConn) tearDown(err error) {
-	ac.cancel()
-	ac.mu.Lock()
-	defer ac.mu.Unlock()
-	if ac.state == connectivity.Shutdown {
-		return
-	}
-	ac.curAddr = resolver.Address{}
-	if err == errConnDrain && ac.transport != nil {
-		// GracefulClose(...) may be executed multiple times when
-		// i) receiving multiple GoAway frames from the server; or
-		// ii) there are concurrent name resolver/Balancer triggered
-		// address removal and GoAway.
-		ac.transport.GracefulClose()
-	}
-	ac.state = connectivity.Shutdown
-	ac.tearDownErr = err
-	ac.cc.handleSubConnStateChange(ac.acbw, ac.state)
-	if ac.events != nil {
-		ac.events.Finish()
-		ac.events = nil
-	}
-	if ac.ready != nil {
-		close(ac.ready)
-		ac.ready = nil
-	}
-	if channelz.IsOn() {
-		channelz.RemoveEntry(ac.channelzID)
-	}
-}
-
-func (ac *addrConn) getState() connectivity.State {
-	ac.mu.Lock()
-	defer ac.mu.Unlock()
-	return ac.state
-}
-
-func (ac *addrConn) getCurAddr() (ret resolver.Address) {
-	ac.mu.Lock()
-	ret = ac.curAddr
-	ac.mu.Unlock()
-	return
-}
-
-func (ac *addrConn) ChannelzMetric() *channelz.ChannelInternalMetric {
-	ac.mu.Lock()
-	addr := ac.curAddr.Addr
-	ac.mu.Unlock()
-	state := ac.getState()
-	ac.czmu.RLock()
-	defer ac.czmu.RUnlock()
-	return &channelz.ChannelInternalMetric{
-		State:                    state,
-		Target:                   addr,
-		CallsStarted:             ac.callsStarted,
-		CallsSucceeded:           ac.callsSucceeded,
-		CallsFailed:              ac.callsFailed,
-		LastCallStartedTimestamp: ac.lastCallStartedTime,
-	}
-}
-
-func (ac *addrConn) incrCallsStarted() {
-	ac.czmu.Lock()
-	ac.callsStarted++
-	ac.lastCallStartedTime = time.Now()
-	ac.czmu.Unlock()
-}
-
-func (ac *addrConn) incrCallsSucceeded() {
-	ac.czmu.Lock()
-	ac.callsSucceeded++
-	ac.czmu.Unlock()
-}
-
-func (ac *addrConn) incrCallsFailed() {
-	ac.czmu.Lock()
-	ac.callsFailed++
-	ac.czmu.Unlock()
-}
-
-// ErrClientConnTimeout indicates that the ClientConn cannot establish the
-// underlying connections within the specified timeout.
-//
-// Deprecated: This error is never returned by grpc and should not be
-// referenced by users.
-var ErrClientConnTimeout = errors.New("grpc: timed out when dialing")
diff --git a/vendor/google.golang.org/grpc/codec.go b/vendor/google.golang.org/grpc/codec.go
deleted file mode 100644
index 129776547..000000000
--- a/vendor/google.golang.org/grpc/codec.go
+++ /dev/null
@@ -1,50 +0,0 @@
-/*
- *
- * Copyright 2014 gRPC authors.
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *     http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- *
- */
-
-package grpc
-
-import (
-	"google.golang.org/grpc/encoding"
-	_ "google.golang.org/grpc/encoding/proto" // to register the Codec for "proto"
-)
-
-// baseCodec contains the functionality of both Codec and encoding.Codec, but
-// omits the name/string, which vary between the two and are not needed for
-// anything besides the registry in the encoding package.
-type baseCodec interface {
-	Marshal(v interface{}) ([]byte, error)
-	Unmarshal(data []byte, v interface{}) error
-}
-
-var _ baseCodec = Codec(nil)
-var _ baseCodec = encoding.Codec(nil)
-
-// Codec defines the interface gRPC uses to encode and decode messages.
-// Note that implementations of this interface must be thread safe;
-// a Codec's methods can be called from concurrent goroutines.
-//
-// Deprecated: use encoding.Codec instead.
-type Codec interface {
-	// Marshal returns the wire format of v.
-	Marshal(v interface{}) ([]byte, error)
-	// Unmarshal parses the wire format into v.
-	Unmarshal(data []byte, v interface{}) error
-	// String returns the name of the Codec implementation.  This is unused by
-	// gRPC.
-	String() string
-}
diff --git a/vendor/google.golang.org/grpc/codes/code_string.go b/vendor/google.golang.org/grpc/codes/code_string.go
deleted file mode 100644
index 0b206a578..000000000
--- a/vendor/google.golang.org/grpc/codes/code_string.go
+++ /dev/null
@@ -1,62 +0,0 @@
-/*
- *
- * Copyright 2017 gRPC authors.
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *     http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- *
- */
-
-package codes
-
-import "strconv"
-
-func (c Code) String() string {
-	switch c {
-	case OK:
-		return "OK"
-	case Canceled:
-		return "Canceled"
-	case Unknown:
-		return "Unknown"
-	case InvalidArgument:
-		return "InvalidArgument"
-	case DeadlineExceeded:
-		return "DeadlineExceeded"
-	case NotFound:
-		return "NotFound"
-	case AlreadyExists:
-		return "AlreadyExists"
-	case PermissionDenied:
-		return "PermissionDenied"
-	case ResourceExhausted:
-		return "ResourceExhausted"
-	case FailedPrecondition:
-		return "FailedPrecondition"
-	case Aborted:
-		return "Aborted"
-	case OutOfRange:
-		return "OutOfRange"
-	case Unimplemented:
-		return "Unimplemented"
-	case Internal:
-		return "Internal"
-	case Unavailable:
-		return "Unavailable"
-	case DataLoss:
-		return "DataLoss"
-	case Unauthenticated:
-		return "Unauthenticated"
-	default:
-		return "Code(" + strconv.FormatInt(int64(c), 10) + ")"
-	}
-}
diff --git a/vendor/google.golang.org/grpc/codes/codes.go b/vendor/google.golang.org/grpc/codes/codes.go
deleted file mode 100644
index d9b9d5782..000000000
--- a/vendor/google.golang.org/grpc/codes/codes.go
+++ /dev/null
@@ -1,197 +0,0 @@
-/*
- *
- * Copyright 2014 gRPC authors.
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *     http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- *
- */
-
-// Package codes defines the canonical error codes used by gRPC. It is
-// consistent across various languages.
-package codes // import "google.golang.org/grpc/codes"
-
-import (
-	"fmt"
-	"strconv"
-)
-
-// A Code is an unsigned 32-bit error code as defined in the gRPC spec.
-type Code uint32
-
-const (
-	// OK is returned on success.
-	OK Code = 0
-
-	// Canceled indicates the operation was canceled (typically by the caller).
-	Canceled Code = 1
-
-	// Unknown error. An example of where this error may be returned is
-	// if a Status value received from another address space belongs to
-	// an error-space that is not known in this address space. Also
-	// errors raised by APIs that do not return enough error information
-	// may be converted to this error.
-	Unknown Code = 2
-
-	// InvalidArgument indicates client specified an invalid argument.
-	// Note that this differs from FailedPrecondition. It indicates arguments
-	// that are problematic regardless of the state of the system
-	// (e.g., a malformed file name).
-	InvalidArgument Code = 3
-
-	// DeadlineExceeded means operation expired before completion.
-	// For operations that change the state of the system, this error may be
-	// returned even if the operation has completed successfully. For
-	// example, a successful response from a server could have been delayed
-	// long enough for the deadline to expire.
-	DeadlineExceeded Code = 4
-
-	// NotFound means some requested entity (e.g., file or directory) was
-	// not found.
-	NotFound Code = 5
-
-	// AlreadyExists means an attempt to create an entity failed because one
-	// already exists.
-	AlreadyExists Code = 6
-
-	// PermissionDenied indicates the caller does not have permission to
-	// execute the specified operation. It must not be used for rejections
-	// caused by exhausting some resource (use ResourceExhausted
-	// instead for those errors). It must not be
-	// used if the caller cannot be identified (use Unauthenticated
-	// instead for those errors).
-	PermissionDenied Code = 7
-
-	// ResourceExhausted indicates some resource has been exhausted, perhaps
-	// a per-user quota, or perhaps the entire file system is out of space.
-	ResourceExhausted Code = 8
-
-	// FailedPrecondition indicates operation was rejected because the
-	// system is not in a state required for the operation's execution.
-	// For example, directory to be deleted may be non-empty, an rmdir
-	// operation is applied to a non-directory, etc.
-	//
-	// A litmus test that may help a service implementor in deciding
-	// between FailedPrecondition, Aborted, and Unavailable:
-	//  (a) Use Unavailable if the client can retry just the failing call.
-	//  (b) Use Aborted if the client should retry at a higher-level
-	//      (e.g., restarting a read-modify-write sequence).
-	//  (c) Use FailedPrecondition if the client should not retry until
-	//      the system state has been explicitly fixed. E.g., if an "rmdir"
-	//      fails because the directory is non-empty, FailedPrecondition
-	//      should be returned since the client should not retry unless
-	//      they have first fixed up the directory by deleting files from it.
-	//  (d) Use FailedPrecondition if the client performs conditional
-	//      REST Get/Update/Delete on a resource and the resource on the
-	//      server does not match the condition. E.g., conflicting
-	//      read-modify-write on the same resource.
-	FailedPrecondition Code = 9
-
-	// Aborted indicates the operation was aborted, typically due to a
-	// concurrency issue like sequencer check failures, transaction aborts,
-	// etc.
-	//
-	// See litmus test above for deciding between FailedPrecondition,
-	// Aborted, and Unavailable.
-	Aborted Code = 10
-
-	// OutOfRange means operation was attempted past the valid range.
-	// E.g., seeking or reading past end of file.
-	//
-	// Unlike InvalidArgument, this error indicates a problem that may
-	// be fixed if the system state changes. For example, a 32-bit file
-	// system will generate InvalidArgument if asked to read at an
-	// offset that is not in the range [0,2^32-1], but it will generate
-	// OutOfRange if asked to read from an offset past the current
-	// file size.
-	//
-	// There is a fair bit of overlap between FailedPrecondition and
-	// OutOfRange. We recommend using OutOfRange (the more specific
-	// error) when it applies so that callers who are iterating through
-	// a space can easily look for an OutOfRange error to detect when
-	// they are done.
-	OutOfRange Code = 11
-
-	// Unimplemented indicates operation is not implemented or not
-	// supported/enabled in this service.
-	Unimplemented Code = 12
-
-	// Internal errors. Means some invariants expected by underlying
-	// system has been broken. If you see one of these errors,
-	// something is very broken.
-	Internal Code = 13
-
-	// Unavailable indicates the service is currently unavailable.
-	// This is a most likely a transient condition and may be corrected
-	// by retrying with a backoff.
-	//
-	// See litmus test above for deciding between FailedPrecondition,
-	// Aborted, and Unavailable.
-	Unavailable Code = 14
-
-	// DataLoss indicates unrecoverable data loss or corruption.
-	DataLoss Code = 15
-
-	// Unauthenticated indicates the request does not have valid
-	// authentication credentials for the operation.
-	Unauthenticated Code = 16
-
-	_maxCode = 17
-)
-
-var strToCode = map[string]Code{
-	`"OK"`: OK,
-	`"CANCELLED"`:/* [sic] */ Canceled,
-	`"UNKNOWN"`:             Unknown,
-	`"INVALID_ARGUMENT"`:    InvalidArgument,
-	`"DEADLINE_EXCEEDED"`:   DeadlineExceeded,
-	`"NOT_FOUND"`:           NotFound,
-	`"ALREADY_EXISTS"`:      AlreadyExists,
-	`"PERMISSION_DENIED"`:   PermissionDenied,
-	`"RESOURCE_EXHAUSTED"`:  ResourceExhausted,
-	`"FAILED_PRECONDITION"`: FailedPrecondition,
-	`"ABORTED"`:             Aborted,
-	`"OUT_OF_RANGE"`:        OutOfRange,
-	`"UNIMPLEMENTED"`:       Unimplemented,
-	`"INTERNAL"`:            Internal,
-	`"UNAVAILABLE"`:         Unavailable,
-	`"DATA_LOSS"`:           DataLoss,
-	`"UNAUTHENTICATED"`:     Unauthenticated,
-}
-
-// UnmarshalJSON unmarshals b into the Code.
-func (c *Code) UnmarshalJSON(b []byte) error {
-	// From json.Unmarshaler: By convention, to approximate the behavior of
-	// Unmarshal itself, Unmarshalers implement UnmarshalJSON([]byte("null")) as
-	// a no-op.
-	if string(b) == "null" {
-		return nil
-	}
-	if c == nil {
-		return fmt.Errorf("nil receiver passed to UnmarshalJSON")
-	}
-
-	if ci, err := strconv.ParseUint(string(b), 10, 32); err == nil {
-		if ci >= _maxCode {
-			return fmt.Errorf("invalid code: %q", ci)
-		}
-
-		*c = Code(ci)
-		return nil
-	}
-
-	if jc, ok := strToCode[string(b)]; ok {
-		*c = jc
-		return nil
-	}
-	return fmt.Errorf("invalid code: %q", string(b))
-}
diff --git a/vendor/google.golang.org/grpc/connectivity/connectivity.go b/vendor/google.golang.org/grpc/connectivity/connectivity.go
deleted file mode 100644
index 568ef5dc6..000000000
--- a/vendor/google.golang.org/grpc/connectivity/connectivity.go
+++ /dev/null
@@ -1,72 +0,0 @@
-/*
- *
- * Copyright 2017 gRPC authors.
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *     http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- *
- */
-
-// Package connectivity defines connectivity semantics.
-// For details, see https://github.com/grpc/grpc/blob/master/doc/connectivity-semantics-and-api.md.
-// All APIs in this package are experimental.
-package connectivity
-
-import (
-	"golang.org/x/net/context"
-	"google.golang.org/grpc/grpclog"
-)
-
-// State indicates the state of connectivity.
-// It can be the state of a ClientConn or SubConn.
-type State int
-
-func (s State) String() string {
-	switch s {
-	case Idle:
-		return "IDLE"
-	case Connecting:
-		return "CONNECTING"
-	case Ready:
-		return "READY"
-	case TransientFailure:
-		return "TRANSIENT_FAILURE"
-	case Shutdown:
-		return "SHUTDOWN"
-	default:
-		grpclog.Errorf("unknown connectivity state: %d", s)
-		return "Invalid-State"
-	}
-}
-
-const (
-	// Idle indicates the ClientConn is idle.
-	Idle State = iota
-	// Connecting indicates the ClienConn is connecting.
-	Connecting
-	// Ready indicates the ClientConn is ready for work.
-	Ready
-	// TransientFailure indicates the ClientConn has seen a failure but expects to recover.
-	TransientFailure
-	// Shutdown indicates the ClientConn has started shutting down.
-	Shutdown
-)
-
-// Reporter reports the connectivity states.
-type Reporter interface {
-	// CurrentState returns the current state of the reporter.
-	CurrentState() State
-	// WaitForStateChange blocks until the reporter's state is different from the given state,
-	// and returns true.
-	// It returns false if <-ctx.Done() can proceed (ctx got timeout or got canceled).
-	WaitForStateChange(context.Context, State) bool
-}
diff --git a/vendor/google.golang.org/grpc/credentials/credentials.go b/vendor/google.golang.org/grpc/credentials/credentials.go
deleted file mode 100644
index 3351bf0ee..000000000
--- a/vendor/google.golang.org/grpc/credentials/credentials.go
+++ /dev/null
@@ -1,220 +0,0 @@
-/*
- *
- * Copyright 2014 gRPC authors.
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *     http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- *
- */
-
-// Package credentials implements various credentials supported by gRPC library,
-// which encapsulate all the state needed by a client to authenticate with a
-// server and make various assertions, e.g., about the client's identity, role,
-// or whether it is authorized to make a particular call.
-package credentials // import "google.golang.org/grpc/credentials"
-
-import (
-	"crypto/tls"
-	"crypto/x509"
-	"errors"
-	"fmt"
-	"io/ioutil"
-	"net"
-	"strings"
-
-	"golang.org/x/net/context"
-)
-
-// alpnProtoStr are the specified application level protocols for gRPC.
-var alpnProtoStr = []string{"h2"}
-
-// PerRPCCredentials defines the common interface for the credentials which need to
-// attach security information to every RPC (e.g., oauth2).
-type PerRPCCredentials interface {
-	// GetRequestMetadata gets the current request metadata, refreshing
-	// tokens if required. This should be called by the transport layer on
-	// each request, and the data should be populated in headers or other
-	// context. If a status code is returned, it will be used as the status
-	// for the RPC. uri is the URI of the entry point for the request.
-	// When supported by the underlying implementation, ctx can be used for
-	// timeout and cancellation.
-	// TODO(zhaoq): Define the set of the qualified keys instead of leaving
-	// it as an arbitrary string.
-	GetRequestMetadata(ctx context.Context, uri ...string) (map[string]string, error)
-	// RequireTransportSecurity indicates whether the credentials requires
-	// transport security.
-	RequireTransportSecurity() bool
-}
-
-// ProtocolInfo provides information regarding the gRPC wire protocol version,
-// security protocol, security protocol version in use, server name, etc.
-type ProtocolInfo struct {
-	// ProtocolVersion is the gRPC wire protocol version.
-	ProtocolVersion string
-	// SecurityProtocol is the security protocol in use.
-	SecurityProtocol string
-	// SecurityVersion is the security protocol version.
-	SecurityVersion string
-	// ServerName is the user-configured server name.
-	ServerName string
-}
-
-// AuthInfo defines the common interface for the auth information the users are interested in.
-type AuthInfo interface {
-	AuthType() string
-}
-
-// ErrConnDispatched indicates that rawConn has been dispatched out of gRPC
-// and the caller should not close rawConn.
-var ErrConnDispatched = errors.New("credentials: rawConn is dispatched out of gRPC")
-
-// TransportCredentials defines the common interface for all the live gRPC wire
-// protocols and supported transport security protocols (e.g., TLS, SSL).
-type TransportCredentials interface {
-	// ClientHandshake does the authentication handshake specified by the corresponding
-	// authentication protocol on rawConn for clients. It returns the authenticated
-	// connection and the corresponding auth information about the connection.
-	// Implementations must use the provided context to implement timely cancellation.
-	// gRPC will try to reconnect if the error returned is a temporary error
-	// (io.EOF, context.DeadlineExceeded or err.Temporary() == true).
-	// If the returned error is a wrapper error, implementations should make sure that
-	// the error implements Temporary() to have the correct retry behaviors.
-	//
-	// If the returned net.Conn is closed, it MUST close the net.Conn provided.
-	ClientHandshake(context.Context, string, net.Conn) (net.Conn, AuthInfo, error)
-	// ServerHandshake does the authentication handshake for servers. It returns
-	// the authenticated connection and the corresponding auth information about
-	// the connection.
-	//
-	// If the returned net.Conn is closed, it MUST close the net.Conn provided.
-	ServerHandshake(net.Conn) (net.Conn, AuthInfo, error)
-	// Info provides the ProtocolInfo of this TransportCredentials.
-	Info() ProtocolInfo
-	// Clone makes a copy of this TransportCredentials.
-	Clone() TransportCredentials
-	// OverrideServerName overrides the server name used to verify the hostname on the returned certificates from the server.
-	// gRPC internals also use it to override the virtual hosting name if it is set.
-	// It must be called before dialing. Currently, this is only used by grpclb.
-	OverrideServerName(string) error
-}
-
-// TLSInfo contains the auth information for a TLS authenticated connection.
-// It implements the AuthInfo interface.
-type TLSInfo struct {
-	State tls.ConnectionState
-}
-
-// AuthType returns the type of TLSInfo as a string.
-func (t TLSInfo) AuthType() string {
-	return "tls"
-}
-
-// tlsCreds is the credentials required for authenticating a connection using TLS.
-type tlsCreds struct {
-	// TLS configuration
-	config *tls.Config
-}
-
-func (c tlsCreds) Info() ProtocolInfo {
-	return ProtocolInfo{
-		SecurityProtocol: "tls",
-		SecurityVersion:  "1.2",
-		ServerName:       c.config.ServerName,
-	}
-}
-
-func (c *tlsCreds) ClientHandshake(ctx context.Context, authority string, rawConn net.Conn) (_ net.Conn, _ AuthInfo, err error) {
-	// use local cfg to avoid clobbering ServerName if using multiple endpoints
-	cfg := cloneTLSConfig(c.config)
-	if cfg.ServerName == "" {
-		colonPos := strings.LastIndex(authority, ":")
-		if colonPos == -1 {
-			colonPos = len(authority)
-		}
-		cfg.ServerName = authority[:colonPos]
-	}
-	conn := tls.Client(rawConn, cfg)
-	errChannel := make(chan error, 1)
-	go func() {
-		errChannel <- conn.Handshake()
-	}()
-	select {
-	case err := <-errChannel:
-		if err != nil {
-			return nil, nil, err
-		}
-	case <-ctx.Done():
-		return nil, nil, ctx.Err()
-	}
-	return conn, TLSInfo{conn.ConnectionState()}, nil
-}
-
-func (c *tlsCreds) ServerHandshake(rawConn net.Conn) (net.Conn, AuthInfo, error) {
-	conn := tls.Server(rawConn, c.config)
-	if err := conn.Handshake(); err != nil {
-		return nil, nil, err
-	}
-	return conn, TLSInfo{conn.ConnectionState()}, nil
-}
-
-func (c *tlsCreds) Clone() TransportCredentials {
-	return NewTLS(c.config)
-}
-
-func (c *tlsCreds) OverrideServerName(serverNameOverride string) error {
-	c.config.ServerName = serverNameOverride
-	return nil
-}
-
-// NewTLS uses c to construct a TransportCredentials based on TLS.
-func NewTLS(c *tls.Config) TransportCredentials {
-	tc := &tlsCreds{cloneTLSConfig(c)}
-	tc.config.NextProtos = alpnProtoStr
-	return tc
-}
-
-// NewClientTLSFromCert constructs TLS credentials from the input certificate for client.
-// serverNameOverride is for testing only. If set to a non empty string,
-// it will override the virtual host name of authority (e.g. :authority header field) in requests.
-func NewClientTLSFromCert(cp *x509.CertPool, serverNameOverride string) TransportCredentials {
-	return NewTLS(&tls.Config{ServerName: serverNameOverride, RootCAs: cp})
-}
-
-// NewClientTLSFromFile constructs TLS credentials from the input certificate file for client.
-// serverNameOverride is for testing only. If set to a non empty string,
-// it will override the virtual host name of authority (e.g. :authority header field) in requests.
-func NewClientTLSFromFile(certFile, serverNameOverride string) (TransportCredentials, error) {
-	b, err := ioutil.ReadFile(certFile)
-	if err != nil {
-		return nil, err
-	}
-	cp := x509.NewCertPool()
-	if !cp.AppendCertsFromPEM(b) {
-		return nil, fmt.Errorf("credentials: failed to append certificates")
-	}
-	return NewTLS(&tls.Config{ServerName: serverNameOverride, RootCAs: cp}), nil
-}
-
-// NewServerTLSFromCert constructs TLS credentials from the input certificate for server.
-func NewServerTLSFromCert(cert *tls.Certificate) TransportCredentials {
-	return NewTLS(&tls.Config{Certificates: []tls.Certificate{*cert}})
-}
-
-// NewServerTLSFromFile constructs TLS credentials from the input certificate file and key
-// file for server.
-func NewServerTLSFromFile(certFile, keyFile string) (TransportCredentials, error) {
-	cert, err := tls.LoadX509KeyPair(certFile, keyFile)
-	if err != nil {
-		return nil, err
-	}
-	return NewTLS(&tls.Config{Certificates: []tls.Certificate{cert}}), nil
-}
diff --git a/vendor/google.golang.org/grpc/credentials/credentials_util_go17.go b/vendor/google.golang.org/grpc/credentials/credentials_util_go17.go
deleted file mode 100644
index 60409aac0..000000000
--- a/vendor/google.golang.org/grpc/credentials/credentials_util_go17.go
+++ /dev/null
@@ -1,60 +0,0 @@
-// +build go1.7
-// +build !go1.8
-
-/*
- *
- * Copyright 2016 gRPC authors.
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *     http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- *
- */
-
-package credentials
-
-import (
-	"crypto/tls"
-)
-
-// cloneTLSConfig returns a shallow clone of the exported
-// fields of cfg, ignoring the unexported sync.Once, which
-// contains a mutex and must not be copied.
-//
-// If cfg is nil, a new zero tls.Config is returned.
-func cloneTLSConfig(cfg *tls.Config) *tls.Config {
-	if cfg == nil {
-		return &tls.Config{}
-	}
-	return &tls.Config{
-		Rand:                        cfg.Rand,
-		Time:                        cfg.Time,
-		Certificates:                cfg.Certificates,
-		NameToCertificate:           cfg.NameToCertificate,
-		GetCertificate:              cfg.GetCertificate,
-		RootCAs:                     cfg.RootCAs,
-		NextProtos:                  cfg.NextProtos,
-		ServerName:                  cfg.ServerName,
-		ClientAuth:                  cfg.ClientAuth,
-		ClientCAs:                   cfg.ClientCAs,
-		InsecureSkipVerify:          cfg.InsecureSkipVerify,
-		CipherSuites:                cfg.CipherSuites,
-		PreferServerCipherSuites:    cfg.PreferServerCipherSuites,
-		SessionTicketsDisabled:      cfg.SessionTicketsDisabled,
-		SessionTicketKey:            cfg.SessionTicketKey,
-		ClientSessionCache:          cfg.ClientSessionCache,
-		MinVersion:                  cfg.MinVersion,
-		MaxVersion:                  cfg.MaxVersion,
-		CurvePreferences:            cfg.CurvePreferences,
-		DynamicRecordSizingDisabled: cfg.DynamicRecordSizingDisabled,
-		Renegotiation:               cfg.Renegotiation,
-	}
-}
diff --git a/vendor/google.golang.org/grpc/credentials/credentials_util_go18.go b/vendor/google.golang.org/grpc/credentials/credentials_util_go18.go
deleted file mode 100644
index 93f0e1d8d..000000000
--- a/vendor/google.golang.org/grpc/credentials/credentials_util_go18.go
+++ /dev/null
@@ -1,38 +0,0 @@
-// +build go1.8
-
-/*
- *
- * Copyright 2017 gRPC authors.
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *     http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- *
- */
-
-package credentials
-
-import (
-	"crypto/tls"
-)
-
-// cloneTLSConfig returns a shallow clone of the exported
-// fields of cfg, ignoring the unexported sync.Once, which
-// contains a mutex and must not be copied.
-//
-// If cfg is nil, a new zero tls.Config is returned.
-func cloneTLSConfig(cfg *tls.Config) *tls.Config {
-	if cfg == nil {
-		return &tls.Config{}
-	}
-
-	return cfg.Clone()
-}
diff --git a/vendor/google.golang.org/grpc/credentials/credentials_util_pre_go17.go b/vendor/google.golang.org/grpc/credentials/credentials_util_pre_go17.go
deleted file mode 100644
index d6bbcc9fd..000000000
--- a/vendor/google.golang.org/grpc/credentials/credentials_util_pre_go17.go
+++ /dev/null
@@ -1,57 +0,0 @@
-// +build !go1.7
-
-/*
- *
- * Copyright 2016 gRPC authors.
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *     http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- *
- */
-
-package credentials
-
-import (
-	"crypto/tls"
-)
-
-// cloneTLSConfig returns a shallow clone of the exported
-// fields of cfg, ignoring the unexported sync.Once, which
-// contains a mutex and must not be copied.
-//
-// If cfg is nil, a new zero tls.Config is returned.
-func cloneTLSConfig(cfg *tls.Config) *tls.Config {
-	if cfg == nil {
-		return &tls.Config{}
-	}
-	return &tls.Config{
-		Rand:                     cfg.Rand,
-		Time:                     cfg.Time,
-		Certificates:             cfg.Certificates,
-		NameToCertificate:        cfg.NameToCertificate,
-		GetCertificate:           cfg.GetCertificate,
-		RootCAs:                  cfg.RootCAs,
-		NextProtos:               cfg.NextProtos,
-		ServerName:               cfg.ServerName,
-		ClientAuth:               cfg.ClientAuth,
-		ClientCAs:                cfg.ClientCAs,
-		InsecureSkipVerify:       cfg.InsecureSkipVerify,
-		CipherSuites:             cfg.CipherSuites,
-		PreferServerCipherSuites: cfg.PreferServerCipherSuites,
-		SessionTicketsDisabled:   cfg.SessionTicketsDisabled,
-		SessionTicketKey:         cfg.SessionTicketKey,
-		ClientSessionCache:       cfg.ClientSessionCache,
-		MinVersion:               cfg.MinVersion,
-		MaxVersion:               cfg.MaxVersion,
-		CurvePreferences:         cfg.CurvePreferences,
-	}
-}
diff --git a/vendor/google.golang.org/grpc/doc.go b/vendor/google.golang.org/grpc/doc.go
deleted file mode 100644
index 187adbb11..000000000
--- a/vendor/google.golang.org/grpc/doc.go
+++ /dev/null
@@ -1,24 +0,0 @@
-/*
- *
- * Copyright 2015 gRPC authors.
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *     http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- *
- */
-
-/*
-Package grpc implements an RPC system called gRPC.
-
-See grpc.io for more information about gRPC.
-*/
-package grpc // import "google.golang.org/grpc"
diff --git a/vendor/google.golang.org/grpc/encoding/encoding.go b/vendor/google.golang.org/grpc/encoding/encoding.go
deleted file mode 100644
index ade8b7cec..000000000
--- a/vendor/google.golang.org/grpc/encoding/encoding.go
+++ /dev/null
@@ -1,118 +0,0 @@
-/*
- *
- * Copyright 2017 gRPC authors.
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *     http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- *
- */
-
-// Package encoding defines the interface for the compressor and codec, and
-// functions to register and retrieve compressors and codecs.
-//
-// This package is EXPERIMENTAL.
-package encoding
-
-import (
-	"io"
-	"strings"
-)
-
-// Identity specifies the optional encoding for uncompressed streams.
-// It is intended for grpc internal use only.
-const Identity = "identity"
-
-// Compressor is used for compressing and decompressing when sending or
-// receiving messages.
-type Compressor interface {
-	// Compress writes the data written to wc to w after compressing it.  If an
-	// error occurs while initializing the compressor, that error is returned
-	// instead.
-	Compress(w io.Writer) (io.WriteCloser, error)
-	// Decompress reads data from r, decompresses it, and provides the
-	// uncompressed data via the returned io.Reader.  If an error occurs while
-	// initializing the decompressor, that error is returned instead.
-	Decompress(r io.Reader) (io.Reader, error)
-	// Name is the name of the compression codec and is used to set the content
-	// coding header.  The result must be static; the result cannot change
-	// between calls.
-	Name() string
-}
-
-var registeredCompressor = make(map[string]Compressor)
-
-// RegisterCompressor registers the compressor with gRPC by its name.  It can
-// be activated when sending an RPC via grpc.UseCompressor().  It will be
-// automatically accessed when receiving a message based on the content coding
-// header.  Servers also use it to send a response with the same encoding as
-// the request.
-//
-// NOTE: this function must only be called during initialization time (i.e. in
-// an init() function), and is not thread-safe.  If multiple Compressors are
-// registered with the same name, the one registered last will take effect.
-func RegisterCompressor(c Compressor) {
-	registeredCompressor[c.Name()] = c
-}
-
-// GetCompressor returns Compressor for the given compressor name.
-func GetCompressor(name string) Compressor {
-	return registeredCompressor[name]
-}
-
-// Codec defines the interface gRPC uses to encode and decode messages.  Note
-// that implementations of this interface must be thread safe; a Codec's
-// methods can be called from concurrent goroutines.
-type Codec interface {
-	// Marshal returns the wire format of v.
-	Marshal(v interface{}) ([]byte, error)
-	// Unmarshal parses the wire format into v.
-	Unmarshal(data []byte, v interface{}) error
-	// Name returns the name of the Codec implementation. The returned string
-	// will be used as part of content type in transmission.  The result must be
-	// static; the result cannot change between calls.
-	Name() string
-}
-
-var registeredCodecs = make(map[string]Codec)
-
-// RegisterCodec registers the provided Codec for use with all gRPC clients and
-// servers.
-//
-// The Codec will be stored and looked up by result of its Name() method, which
-// should match the content-subtype of the encoding handled by the Codec.  This
-// is case-insensitive, and is stored and looked up as lowercase.  If the
-// result of calling Name() is an empty string, RegisterCodec will panic. See
-// Content-Type on
-// https://github.com/grpc/grpc/blob/master/doc/PROTOCOL-HTTP2.md#requests for
-// more details.
-//
-// NOTE: this function must only be called during initialization time (i.e. in
-// an init() function), and is not thread-safe.  If multiple Compressors are
-// registered with the same name, the one registered last will take effect.
-func RegisterCodec(codec Codec) {
-	if codec == nil {
-		panic("cannot register a nil Codec")
-	}
-	contentSubtype := strings.ToLower(codec.Name())
-	if contentSubtype == "" {
-		panic("cannot register Codec with empty string result for String()")
-	}
-	registeredCodecs[contentSubtype] = codec
-}
-
-// GetCodec gets a registered Codec by content-subtype, or nil if no Codec is
-// registered for the content-subtype.
-//
-// The content-subtype is expected to be lowercase.
-func GetCodec(contentSubtype string) Codec {
-	return registeredCodecs[contentSubtype]
-}
diff --git a/vendor/google.golang.org/grpc/encoding/proto/proto.go b/vendor/google.golang.org/grpc/encoding/proto/proto.go
deleted file mode 100644
index 66b97a6f6..000000000
--- a/vendor/google.golang.org/grpc/encoding/proto/proto.go
+++ /dev/null
@@ -1,110 +0,0 @@
-/*
- *
- * Copyright 2018 gRPC authors.
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *     http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- *
- */
-
-// Package proto defines the protobuf codec. Importing this package will
-// register the codec.
-package proto
-
-import (
-	"math"
-	"sync"
-
-	"github.com/golang/protobuf/proto"
-	"google.golang.org/grpc/encoding"
-)
-
-// Name is the name registered for the proto compressor.
-const Name = "proto"
-
-func init() {
-	encoding.RegisterCodec(codec{})
-}
-
-// codec is a Codec implementation with protobuf. It is the default codec for gRPC.
-type codec struct{}
-
-type cachedProtoBuffer struct {
-	lastMarshaledSize uint32
-	proto.Buffer
-}
-
-func capToMaxInt32(val int) uint32 {
-	if val > math.MaxInt32 {
-		return uint32(math.MaxInt32)
-	}
-	return uint32(val)
-}
-
-func marshal(v interface{}, cb *cachedProtoBuffer) ([]byte, error) {
-	protoMsg := v.(proto.Message)
-	newSlice := make([]byte, 0, cb.lastMarshaledSize)
-
-	cb.SetBuf(newSlice)
-	cb.Reset()
-	if err := cb.Marshal(protoMsg); err != nil {
-		return nil, err
-	}
-	out := cb.Bytes()
-	cb.lastMarshaledSize = capToMaxInt32(len(out))
-	return out, nil
-}
-
-func (codec) Marshal(v interface{}) ([]byte, error) {
-	if pm, ok := v.(proto.Marshaler); ok {
-		// object can marshal itself, no need for buffer
-		return pm.Marshal()
-	}
-
-	cb := protoBufferPool.Get().(*cachedProtoBuffer)
-	out, err := marshal(v, cb)
-
-	// put back buffer and lose the ref to the slice
-	cb.SetBuf(nil)
-	protoBufferPool.Put(cb)
-	return out, err
-}
-
-func (codec) Unmarshal(data []byte, v interface{}) error {
-	protoMsg := v.(proto.Message)
-	protoMsg.Reset()
-
-	if pu, ok := protoMsg.(proto.Unmarshaler); ok {
-		// object can unmarshal itself, no need for buffer
-		return pu.Unmarshal(data)
-	}
-
-	cb := protoBufferPool.Get().(*cachedProtoBuffer)
-	cb.SetBuf(data)
-	err := cb.Unmarshal(protoMsg)
-	cb.SetBuf(nil)
-	protoBufferPool.Put(cb)
-	return err
-}
-
-func (codec) Name() string {
-	return Name
-}
-
-var protoBufferPool = &sync.Pool{
-	New: func() interface{} {
-		return &cachedProtoBuffer{
-			Buffer:            proto.Buffer{},
-			lastMarshaledSize: 16,
-		}
-	},
-}
diff --git a/vendor/google.golang.org/grpc/envconfig.go b/vendor/google.golang.org/grpc/envconfig.go
deleted file mode 100644
index d50178e51..000000000
--- a/vendor/google.golang.org/grpc/envconfig.go
+++ /dev/null
@@ -1,37 +0,0 @@
-/*
- *
- * Copyright 2018 gRPC authors.
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *     http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- *
- */
-
-package grpc
-
-import (
-	"os"
-	"strings"
-)
-
-const (
-	envConfigPrefix        = "GRPC_GO_"
-	envConfigStickinessStr = envConfigPrefix + "STICKINESS"
-)
-
-var (
-	envConfigStickinessOn bool
-)
-
-func init() {
-	envConfigStickinessOn = strings.EqualFold(os.Getenv(envConfigStickinessStr), "on")
-}
diff --git a/vendor/google.golang.org/grpc/go16.go b/vendor/google.golang.org/grpc/go16.go
deleted file mode 100644
index 535ee9356..000000000
--- a/vendor/google.golang.org/grpc/go16.go
+++ /dev/null
@@ -1,70 +0,0 @@
-// +build go1.6,!go1.7
-
-/*
- *
- * Copyright 2016 gRPC authors.
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *     http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- *
- */
-
-package grpc
-
-import (
-	"fmt"
-	"io"
-	"net"
-	"net/http"
-
-	"golang.org/x/net/context"
-	"google.golang.org/grpc/codes"
-	"google.golang.org/grpc/status"
-	"google.golang.org/grpc/transport"
-)
-
-// dialContext connects to the address on the named network.
-func dialContext(ctx context.Context, network, address string) (net.Conn, error) {
-	return (&net.Dialer{Cancel: ctx.Done()}).Dial(network, address)
-}
-
-func sendHTTPRequest(ctx context.Context, req *http.Request, conn net.Conn) error {
-	req.Cancel = ctx.Done()
-	if err := req.Write(conn); err != nil {
-		return fmt.Errorf("failed to write the HTTP request: %v", err)
-	}
-	return nil
-}
-
-// toRPCErr converts an error into an error from the status package.
-func toRPCErr(err error) error {
-	if err == nil || err == io.EOF {
-		return err
-	}
-	if _, ok := status.FromError(err); ok {
-		return err
-	}
-	switch e := err.(type) {
-	case transport.StreamError:
-		return status.Error(e.Code, e.Desc)
-	case transport.ConnectionError:
-		return status.Error(codes.Unavailable, e.Desc)
-	default:
-		switch err {
-		case context.DeadlineExceeded:
-			return status.Error(codes.DeadlineExceeded, err.Error())
-		case context.Canceled:
-			return status.Error(codes.Canceled, err.Error())
-		}
-	}
-	return status.Error(codes.Unknown, err.Error())
-}
diff --git a/vendor/google.golang.org/grpc/go17.go b/vendor/google.golang.org/grpc/go17.go
deleted file mode 100644
index ec676a93c..000000000
--- a/vendor/google.golang.org/grpc/go17.go
+++ /dev/null
@@ -1,71 +0,0 @@
-// +build go1.7
-
-/*
- *
- * Copyright 2016 gRPC authors.
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *     http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- *
- */
-
-package grpc
-
-import (
-	"context"
-	"fmt"
-	"io"
-	"net"
-	"net/http"
-
-	netctx "golang.org/x/net/context"
-	"google.golang.org/grpc/codes"
-	"google.golang.org/grpc/status"
-	"google.golang.org/grpc/transport"
-)
-
-// dialContext connects to the address on the named network.
-func dialContext(ctx context.Context, network, address string) (net.Conn, error) {
-	return (&net.Dialer{}).DialContext(ctx, network, address)
-}
-
-func sendHTTPRequest(ctx context.Context, req *http.Request, conn net.Conn) error {
-	req = req.WithContext(ctx)
-	if err := req.Write(conn); err != nil {
-		return fmt.Errorf("failed to write the HTTP request: %v", err)
-	}
-	return nil
-}
-
-// toRPCErr converts an error into an error from the status package.
-func toRPCErr(err error) error {
-	if err == nil || err == io.EOF {
-		return err
-	}
-	if _, ok := status.FromError(err); ok {
-		return err
-	}
-	switch e := err.(type) {
-	case transport.StreamError:
-		return status.Error(e.Code, e.Desc)
-	case transport.ConnectionError:
-		return status.Error(codes.Unavailable, e.Desc)
-	default:
-		switch err {
-		case context.DeadlineExceeded, netctx.DeadlineExceeded:
-			return status.Error(codes.DeadlineExceeded, err.Error())
-		case context.Canceled, netctx.Canceled:
-			return status.Error(codes.Canceled, err.Error())
-		}
-	}
-	return status.Error(codes.Unknown, err.Error())
-}
diff --git a/vendor/google.golang.org/grpc/grpclog/grpclog.go b/vendor/google.golang.org/grpc/grpclog/grpclog.go
deleted file mode 100644
index 1fabb11e1..000000000
--- a/vendor/google.golang.org/grpc/grpclog/grpclog.go
+++ /dev/null
@@ -1,126 +0,0 @@
-/*
- *
- * Copyright 2017 gRPC authors.
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *     http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- *
- */
-
-// Package grpclog defines logging for grpc.
-//
-// All logs in transport package only go to verbose level 2.
-// All logs in other packages in grpc are logged in spite of the verbosity level.
-//
-// In the default logger,
-// severity level can be set by environment variable GRPC_GO_LOG_SEVERITY_LEVEL,
-// verbosity level can be set by GRPC_GO_LOG_VERBOSITY_LEVEL.
-package grpclog // import "google.golang.org/grpc/grpclog"
-
-import "os"
-
-var logger = newLoggerV2()
-
-// V reports whether verbosity level l is at least the requested verbose level.
-func V(l int) bool {
-	return logger.V(l)
-}
-
-// Info logs to the INFO log.
-func Info(args ...interface{}) {
-	logger.Info(args...)
-}
-
-// Infof logs to the INFO log. Arguments are handled in the manner of fmt.Printf.
-func Infof(format string, args ...interface{}) {
-	logger.Infof(format, args...)
-}
-
-// Infoln logs to the INFO log. Arguments are handled in the manner of fmt.Println.
-func Infoln(args ...interface{}) {
-	logger.Infoln(args...)
-}
-
-// Warning logs to the WARNING log.
-func Warning(args ...interface{}) {
-	logger.Warning(args...)
-}
-
-// Warningf logs to the WARNING log. Arguments are handled in the manner of fmt.Printf.
-func Warningf(format string, args ...interface{}) {
-	logger.Warningf(format, args...)
-}
-
-// Warningln logs to the WARNING log. Arguments are handled in the manner of fmt.Println.
-func Warningln(args ...interface{}) {
-	logger.Warningln(args...)
-}
-
-// Error logs to the ERROR log.
-func Error(args ...interface{}) {
-	logger.Error(args...)
-}
-
-// Errorf logs to the ERROR log. Arguments are handled in the manner of fmt.Printf.
-func Errorf(format string, args ...interface{}) {
-	logger.Errorf(format, args...)
-}
-
-// Errorln logs to the ERROR log. Arguments are handled in the manner of fmt.Println.
-func Errorln(args ...interface{}) {
-	logger.Errorln(args...)
-}
-
-// Fatal logs to the FATAL log. Arguments are handled in the manner of fmt.Print.
-// It calls os.Exit() with exit code 1.
-func Fatal(args ...interface{}) {
-	logger.Fatal(args...)
-	// Make sure fatal logs will exit.
-	os.Exit(1)
-}
-
-// Fatalf logs to the FATAL log. Arguments are handled in the manner of fmt.Printf.
-// It calles os.Exit() with exit code 1.
-func Fatalf(format string, args ...interface{}) {
-	logger.Fatalf(format, args...)
-	// Make sure fatal logs will exit.
-	os.Exit(1)
-}
-
-// Fatalln logs to the FATAL log. Arguments are handled in the manner of fmt.Println.
-// It calle os.Exit()) with exit code 1.
-func Fatalln(args ...interface{}) {
-	logger.Fatalln(args...)
-	// Make sure fatal logs will exit.
-	os.Exit(1)
-}
-
-// Print prints to the logger. Arguments are handled in the manner of fmt.Print.
-//
-// Deprecated: use Info.
-func Print(args ...interface{}) {
-	logger.Info(args...)
-}
-
-// Printf prints to the logger. Arguments are handled in the manner of fmt.Printf.
-//
-// Deprecated: use Infof.
-func Printf(format string, args ...interface{}) {
-	logger.Infof(format, args...)
-}
-
-// Println prints to the logger. Arguments are handled in the manner of fmt.Println.
-//
-// Deprecated: use Infoln.
-func Println(args ...interface{}) {
-	logger.Infoln(args...)
-}
diff --git a/vendor/google.golang.org/grpc/grpclog/logger.go b/vendor/google.golang.org/grpc/grpclog/logger.go
deleted file mode 100644
index 097494f71..000000000
--- a/vendor/google.golang.org/grpc/grpclog/logger.go
+++ /dev/null
@@ -1,85 +0,0 @@
-/*
- *
- * Copyright 2015 gRPC authors.
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *     http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- *
- */
-
-package grpclog
-
-// Logger mimics golang's standard Logger as an interface.
-//
-// Deprecated: use LoggerV2.
-type Logger interface {
-	Fatal(args ...interface{})
-	Fatalf(format string, args ...interface{})
-	Fatalln(args ...interface{})
-	Print(args ...interface{})
-	Printf(format string, args ...interface{})
-	Println(args ...interface{})
-}
-
-// SetLogger sets the logger that is used in grpc. Call only from
-// init() functions.
-//
-// Deprecated: use SetLoggerV2.
-func SetLogger(l Logger) {
-	logger = &loggerWrapper{Logger: l}
-}
-
-// loggerWrapper wraps Logger into a LoggerV2.
-type loggerWrapper struct {
-	Logger
-}
-
-func (g *loggerWrapper) Info(args ...interface{}) {
-	g.Logger.Print(args...)
-}
-
-func (g *loggerWrapper) Infoln(args ...interface{}) {
-	g.Logger.Println(args...)
-}
-
-func (g *loggerWrapper) Infof(format string, args ...interface{}) {
-	g.Logger.Printf(format, args...)
-}
-
-func (g *loggerWrapper) Warning(args ...interface{}) {
-	g.Logger.Print(args...)
-}
-
-func (g *loggerWrapper) Warningln(args ...interface{}) {
-	g.Logger.Println(args...)
-}
-
-func (g *loggerWrapper) Warningf(format string, args ...interface{}) {
-	g.Logger.Printf(format, args...)
-}
-
-func (g *loggerWrapper) Error(args ...interface{}) {
-	g.Logger.Print(args...)
-}
-
-func (g *loggerWrapper) Errorln(args ...interface{}) {
-	g.Logger.Println(args...)
-}
-
-func (g *loggerWrapper) Errorf(format string, args ...interface{}) {
-	g.Logger.Printf(format, args...)
-}
-
-func (g *loggerWrapper) V(l int) bool {
-	// Returns true for all verbose level.
-	return true
-}
diff --git a/vendor/google.golang.org/grpc/grpclog/loggerv2.go b/vendor/google.golang.org/grpc/grpclog/loggerv2.go
deleted file mode 100644
index d49325776..000000000
--- a/vendor/google.golang.org/grpc/grpclog/loggerv2.go
+++ /dev/null
@@ -1,195 +0,0 @@
-/*
- *
- * Copyright 2017 gRPC authors.
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *     http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- *
- */
-
-package grpclog
-
-import (
-	"io"
-	"io/ioutil"
-	"log"
-	"os"
-	"strconv"
-)
-
-// LoggerV2 does underlying logging work for grpclog.
-type LoggerV2 interface {
-	// Info logs to INFO log. Arguments are handled in the manner of fmt.Print.
-	Info(args ...interface{})
-	// Infoln logs to INFO log. Arguments are handled in the manner of fmt.Println.
-	Infoln(args ...interface{})
-	// Infof logs to INFO log. Arguments are handled in the manner of fmt.Printf.
-	Infof(format string, args ...interface{})
-	// Warning logs to WARNING log. Arguments are handled in the manner of fmt.Print.
-	Warning(args ...interface{})
-	// Warningln logs to WARNING log. Arguments are handled in the manner of fmt.Println.
-	Warningln(args ...interface{})
-	// Warningf logs to WARNING log. Arguments are handled in the manner of fmt.Printf.
-	Warningf(format string, args ...interface{})
-	// Error logs to ERROR log. Arguments are handled in the manner of fmt.Print.
-	Error(args ...interface{})
-	// Errorln logs to ERROR log. Arguments are handled in the manner of fmt.Println.
-	Errorln(args ...interface{})
-	// Errorf logs to ERROR log. Arguments are handled in the manner of fmt.Printf.
-	Errorf(format string, args ...interface{})
-	// Fatal logs to ERROR log. Arguments are handled in the manner of fmt.Print.
-	// gRPC ensures that all Fatal logs will exit with os.Exit(1).
-	// Implementations may also call os.Exit() with a non-zero exit code.
-	Fatal(args ...interface{})
-	// Fatalln logs to ERROR log. Arguments are handled in the manner of fmt.Println.
-	// gRPC ensures that all Fatal logs will exit with os.Exit(1).
-	// Implementations may also call os.Exit() with a non-zero exit code.
-	Fatalln(args ...interface{})
-	// Fatalf logs to ERROR log. Arguments are handled in the manner of fmt.Printf.
-	// gRPC ensures that all Fatal logs will exit with os.Exit(1).
-	// Implementations may also call os.Exit() with a non-zero exit code.
-	Fatalf(format string, args ...interface{})
-	// V reports whether verbosity level l is at least the requested verbose level.
-	V(l int) bool
-}
-
-// SetLoggerV2 sets logger that is used in grpc to a V2 logger.
-// Not mutex-protected, should be called before any gRPC functions.
-func SetLoggerV2(l LoggerV2) {
-	logger = l
-}
-
-const (
-	// infoLog indicates Info severity.
-	infoLog int = iota
-	// warningLog indicates Warning severity.
-	warningLog
-	// errorLog indicates Error severity.
-	errorLog
-	// fatalLog indicates Fatal severity.
-	fatalLog
-)
-
-// severityName contains the string representation of each severity.
-var severityName = []string{
-	infoLog:    "INFO",
-	warningLog: "WARNING",
-	errorLog:   "ERROR",
-	fatalLog:   "FATAL",
-}
-
-// loggerT is the default logger used by grpclog.
-type loggerT struct {
-	m []*log.Logger
-	v int
-}
-
-// NewLoggerV2 creates a loggerV2 with the provided writers.
-// Fatal logs will be written to errorW, warningW, infoW, followed by exit(1).
-// Error logs will be written to errorW, warningW and infoW.
-// Warning logs will be written to warningW and infoW.
-// Info logs will be written to infoW.
-func NewLoggerV2(infoW, warningW, errorW io.Writer) LoggerV2 {
-	return NewLoggerV2WithVerbosity(infoW, warningW, errorW, 0)
-}
-
-// NewLoggerV2WithVerbosity creates a loggerV2 with the provided writers and
-// verbosity level.
-func NewLoggerV2WithVerbosity(infoW, warningW, errorW io.Writer, v int) LoggerV2 {
-	var m []*log.Logger
-	m = append(m, log.New(infoW, severityName[infoLog]+": ", log.LstdFlags))
-	m = append(m, log.New(io.MultiWriter(infoW, warningW), severityName[warningLog]+": ", log.LstdFlags))
-	ew := io.MultiWriter(infoW, warningW, errorW) // ew will be used for error and fatal.
-	m = append(m, log.New(ew, severityName[errorLog]+": ", log.LstdFlags))
-	m = append(m, log.New(ew, severityName[fatalLog]+": ", log.LstdFlags))
-	return &loggerT{m: m, v: v}
-}
-
-// newLoggerV2 creates a loggerV2 to be used as default logger.
-// All logs are written to stderr.
-func newLoggerV2() LoggerV2 {
-	errorW := ioutil.Discard
-	warningW := ioutil.Discard
-	infoW := ioutil.Discard
-
-	logLevel := os.Getenv("GRPC_GO_LOG_SEVERITY_LEVEL")
-	switch logLevel {
-	case "", "ERROR", "error": // If env is unset, set level to ERROR.
-		errorW = os.Stderr
-	case "WARNING", "warning":
-		warningW = os.Stderr
-	case "INFO", "info":
-		infoW = os.Stderr
-	}
-
-	var v int
-	vLevel := os.Getenv("GRPC_GO_LOG_VERBOSITY_LEVEL")
-	if vl, err := strconv.Atoi(vLevel); err == nil {
-		v = vl
-	}
-	return NewLoggerV2WithVerbosity(infoW, warningW, errorW, v)
-}
-
-func (g *loggerT) Info(args ...interface{}) {
-	g.m[infoLog].Print(args...)
-}
-
-func (g *loggerT) Infoln(args ...interface{}) {
-	g.m[infoLog].Println(args...)
-}
-
-func (g *loggerT) Infof(format string, args ...interface{}) {
-	g.m[infoLog].Printf(format, args...)
-}
-
-func (g *loggerT) Warning(args ...interface{}) {
-	g.m[warningLog].Print(args...)
-}
-
-func (g *loggerT) Warningln(args ...interface{}) {
-	g.m[warningLog].Println(args...)
-}
-
-func (g *loggerT) Warningf(format string, args ...interface{}) {
-	g.m[warningLog].Printf(format, args...)
-}
-
-func (g *loggerT) Error(args ...interface{}) {
-	g.m[errorLog].Print(args...)
-}
-
-func (g *loggerT) Errorln(args ...interface{}) {
-	g.m[errorLog].Println(args...)
-}
-
-func (g *loggerT) Errorf(format string, args ...interface{}) {
-	g.m[errorLog].Printf(format, args...)
-}
-
-func (g *loggerT) Fatal(args ...interface{}) {
-	g.m[fatalLog].Fatal(args...)
-	// No need to call os.Exit() again because log.Logger.Fatal() calls os.Exit().
-}
-
-func (g *loggerT) Fatalln(args ...interface{}) {
-	g.m[fatalLog].Fatalln(args...)
-	// No need to call os.Exit() again because log.Logger.Fatal() calls os.Exit().
-}
-
-func (g *loggerT) Fatalf(format string, args ...interface{}) {
-	g.m[fatalLog].Fatalf(format, args...)
-	// No need to call os.Exit() again because log.Logger.Fatal() calls os.Exit().
-}
-
-func (g *loggerT) V(l int) bool {
-	return l <= g.v
-}
diff --git a/vendor/google.golang.org/grpc/health/grpc_health_v1/health.pb.go b/vendor/google.golang.org/grpc/health/grpc_health_v1/health.pb.go
deleted file mode 100644
index a1fda2801..000000000
--- a/vendor/google.golang.org/grpc/health/grpc_health_v1/health.pb.go
+++ /dev/null
@@ -1,227 +0,0 @@
-// Code generated by protoc-gen-go. DO NOT EDIT.
-// source: grpc/health/v1/health.proto
-
-package grpc_health_v1 // import "google.golang.org/grpc/health/grpc_health_v1"
-
-import proto "github.com/golang/protobuf/proto"
-import fmt "fmt"
-import math "math"
-
-import (
-	context "golang.org/x/net/context"
-	grpc "google.golang.org/grpc"
-)
-
-// Reference imports to suppress errors if they are not otherwise used.
-var _ = proto.Marshal
-var _ = fmt.Errorf
-var _ = math.Inf
-
-// This is a compile-time assertion to ensure that this generated file
-// is compatible with the proto package it is being compiled against.
-// A compilation error at this line likely means your copy of the
-// proto package needs to be updated.
-const _ = proto.ProtoPackageIsVersion2 // please upgrade the proto package
-
-type HealthCheckResponse_ServingStatus int32
-
-const (
-	HealthCheckResponse_UNKNOWN     HealthCheckResponse_ServingStatus = 0
-	HealthCheckResponse_SERVING     HealthCheckResponse_ServingStatus = 1
-	HealthCheckResponse_NOT_SERVING HealthCheckResponse_ServingStatus = 2
-)
-
-var HealthCheckResponse_ServingStatus_name = map[int32]string{
-	0: "UNKNOWN",
-	1: "SERVING",
-	2: "NOT_SERVING",
-}
-var HealthCheckResponse_ServingStatus_value = map[string]int32{
-	"UNKNOWN":     0,
-	"SERVING":     1,
-	"NOT_SERVING": 2,
-}
-
-func (x HealthCheckResponse_ServingStatus) String() string {
-	return proto.EnumName(HealthCheckResponse_ServingStatus_name, int32(x))
-}
-func (HealthCheckResponse_ServingStatus) EnumDescriptor() ([]byte, []int) {
-	return fileDescriptor_health_85731b6c49265086, []int{1, 0}
-}
-
-type HealthCheckRequest struct {
-	Service              string   `protobuf:"bytes,1,opt,name=service,proto3" json:"service,omitempty"`
-	XXX_NoUnkeyedLiteral struct{} `json:"-"`
-	XXX_unrecognized     []byte   `json:"-"`
-	XXX_sizecache        int32    `json:"-"`
-}
-
-func (m *HealthCheckRequest) Reset()         { *m = HealthCheckRequest{} }
-func (m *HealthCheckRequest) String() string { return proto.CompactTextString(m) }
-func (*HealthCheckRequest) ProtoMessage()    {}
-func (*HealthCheckRequest) Descriptor() ([]byte, []int) {
-	return fileDescriptor_health_85731b6c49265086, []int{0}
-}
-func (m *HealthCheckRequest) XXX_Unmarshal(b []byte) error {
-	return xxx_messageInfo_HealthCheckRequest.Unmarshal(m, b)
-}
-func (m *HealthCheckRequest) XXX_Marshal(b []byte, deterministic bool) ([]byte, error) {
-	return xxx_messageInfo_HealthCheckRequest.Marshal(b, m, deterministic)
-}
-func (dst *HealthCheckRequest) XXX_Merge(src proto.Message) {
-	xxx_messageInfo_HealthCheckRequest.Merge(dst, src)
-}
-func (m *HealthCheckRequest) XXX_Size() int {
-	return xxx_messageInfo_HealthCheckRequest.Size(m)
-}
-func (m *HealthCheckRequest) XXX_DiscardUnknown() {
-	xxx_messageInfo_HealthCheckRequest.DiscardUnknown(m)
-}
-
-var xxx_messageInfo_HealthCheckRequest proto.InternalMessageInfo
-
-func (m *HealthCheckRequest) GetService() string {
-	if m != nil {
-		return m.Service
-	}
-	return ""
-}
-
-type HealthCheckResponse struct {
-	Status               HealthCheckResponse_ServingStatus `protobuf:"varint,1,opt,name=status,proto3,enum=grpc.health.v1.HealthCheckResponse_ServingStatus" json:"status,omitempty"`
-	XXX_NoUnkeyedLiteral struct{}                          `json:"-"`
-	XXX_unrecognized     []byte                            `json:"-"`
-	XXX_sizecache        int32                             `json:"-"`
-}
-
-func (m *HealthCheckResponse) Reset()         { *m = HealthCheckResponse{} }
-func (m *HealthCheckResponse) String() string { return proto.CompactTextString(m) }
-func (*HealthCheckResponse) ProtoMessage()    {}
-func (*HealthCheckResponse) Descriptor() ([]byte, []int) {
-	return fileDescriptor_health_85731b6c49265086, []int{1}
-}
-func (m *HealthCheckResponse) XXX_Unmarshal(b []byte) error {
-	return xxx_messageInfo_HealthCheckResponse.Unmarshal(m, b)
-}
-func (m *HealthCheckResponse) XXX_Marshal(b []byte, deterministic bool) ([]byte, error) {
-	return xxx_messageInfo_HealthCheckResponse.Marshal(b, m, deterministic)
-}
-func (dst *HealthCheckResponse) XXX_Merge(src proto.Message) {
-	xxx_messageInfo_HealthCheckResponse.Merge(dst, src)
-}
-func (m *HealthCheckResponse) XXX_Size() int {
-	return xxx_messageInfo_HealthCheckResponse.Size(m)
-}
-func (m *HealthCheckResponse) XXX_DiscardUnknown() {
-	xxx_messageInfo_HealthCheckResponse.DiscardUnknown(m)
-}
-
-var xxx_messageInfo_HealthCheckResponse proto.InternalMessageInfo
-
-func (m *HealthCheckResponse) GetStatus() HealthCheckResponse_ServingStatus {
-	if m != nil {
-		return m.Status
-	}
-	return HealthCheckResponse_UNKNOWN
-}
-
-func init() {
-	proto.RegisterType((*HealthCheckRequest)(nil), "grpc.health.v1.HealthCheckRequest")
-	proto.RegisterType((*HealthCheckResponse)(nil), "grpc.health.v1.HealthCheckResponse")
-	proto.RegisterEnum("grpc.health.v1.HealthCheckResponse_ServingStatus", HealthCheckResponse_ServingStatus_name, HealthCheckResponse_ServingStatus_value)
-}
-
-// Reference imports to suppress errors if they are not otherwise used.
-var _ context.Context
-var _ grpc.ClientConn
-
-// This is a compile-time assertion to ensure that this generated file
-// is compatible with the grpc package it is being compiled against.
-const _ = grpc.SupportPackageIsVersion4
-
-// HealthClient is the client API for Health service.
-//
-// For semantics around ctx use and closing/ending streaming RPCs, please refer to https://godoc.org/google.golang.org/grpc#ClientConn.NewStream.
-type HealthClient interface {
-	Check(ctx context.Context, in *HealthCheckRequest, opts ...grpc.CallOption) (*HealthCheckResponse, error)
-}
-
-type healthClient struct {
-	cc *grpc.ClientConn
-}
-
-func NewHealthClient(cc *grpc.ClientConn) HealthClient {
-	return &healthClient{cc}
-}
-
-func (c *healthClient) Check(ctx context.Context, in *HealthCheckRequest, opts ...grpc.CallOption) (*HealthCheckResponse, error) {
-	out := new(HealthCheckResponse)
-	err := c.cc.Invoke(ctx, "/grpc.health.v1.Health/Check", in, out, opts...)
-	if err != nil {
-		return nil, err
-	}
-	return out, nil
-}
-
-// HealthServer is the server API for Health service.
-type HealthServer interface {
-	Check(context.Context, *HealthCheckRequest) (*HealthCheckResponse, error)
-}
-
-func RegisterHealthServer(s *grpc.Server, srv HealthServer) {
-	s.RegisterService(&_Health_serviceDesc, srv)
-}
-
-func _Health_Check_Handler(srv interface{}, ctx context.Context, dec func(interface{}) error, interceptor grpc.UnaryServerInterceptor) (interface{}, error) {
-	in := new(HealthCheckRequest)
-	if err := dec(in); err != nil {
-		return nil, err
-	}
-	if interceptor == nil {
-		return srv.(HealthServer).Check(ctx, in)
-	}
-	info := &grpc.UnaryServerInfo{
-		Server:     srv,
-		FullMethod: "/grpc.health.v1.Health/Check",
-	}
-	handler := func(ctx context.Context, req interface{}) (interface{}, error) {
-		return srv.(HealthServer).Check(ctx, req.(*HealthCheckRequest))
-	}
-	return interceptor(ctx, in, info, handler)
-}
-
-var _Health_serviceDesc = grpc.ServiceDesc{
-	ServiceName: "grpc.health.v1.Health",
-	HandlerType: (*HealthServer)(nil),
-	Methods: []grpc.MethodDesc{
-		{
-			MethodName: "Check",
-			Handler:    _Health_Check_Handler,
-		},
-	},
-	Streams:  []grpc.StreamDesc{},
-	Metadata: "grpc/health/v1/health.proto",
-}
-
-func init() { proto.RegisterFile("grpc/health/v1/health.proto", fileDescriptor_health_85731b6c49265086) }
-
-var fileDescriptor_health_85731b6c49265086 = []byte{
-	// 271 bytes of a gzipped FileDescriptorProto
-	0x1f, 0x8b, 0x08, 0x00, 0x00, 0x00, 0x00, 0x00, 0x02, 0xff, 0xe2, 0x92, 0x4e, 0x2f, 0x2a, 0x48,
-	0xd6, 0xcf, 0x48, 0x4d, 0xcc, 0x29, 0xc9, 0xd0, 0x2f, 0x33, 0x84, 0xb2, 0xf4, 0x0a, 0x8a, 0xf2,
-	0x4b, 0xf2, 0x85, 0xf8, 0x40, 0x92, 0x7a, 0x50, 0xa1, 0x32, 0x43, 0x25, 0x3d, 0x2e, 0x21, 0x0f,
-	0x30, 0xc7, 0x39, 0x23, 0x35, 0x39, 0x3b, 0x28, 0xb5, 0xb0, 0x34, 0xb5, 0xb8, 0x44, 0x48, 0x82,
-	0x8b, 0xbd, 0x38, 0xb5, 0xa8, 0x2c, 0x33, 0x39, 0x55, 0x82, 0x51, 0x81, 0x51, 0x83, 0x33, 0x08,
-	0xc6, 0x55, 0x9a, 0xc3, 0xc8, 0x25, 0x8c, 0xa2, 0xa1, 0xb8, 0x20, 0x3f, 0xaf, 0x38, 0x55, 0xc8,
-	0x93, 0x8b, 0xad, 0xb8, 0x24, 0xb1, 0xa4, 0xb4, 0x18, 0xac, 0x81, 0xcf, 0xc8, 0x50, 0x0f, 0xd5,
-	0x22, 0x3d, 0x2c, 0x9a, 0xf4, 0x82, 0x41, 0x86, 0xe6, 0xa5, 0x07, 0x83, 0x35, 0x06, 0x41, 0x0d,
-	0x50, 0xb2, 0xe2, 0xe2, 0x45, 0x91, 0x10, 0xe2, 0xe6, 0x62, 0x0f, 0xf5, 0xf3, 0xf6, 0xf3, 0x0f,
-	0xf7, 0x13, 0x60, 0x00, 0x71, 0x82, 0x5d, 0x83, 0xc2, 0x3c, 0xfd, 0xdc, 0x05, 0x18, 0x85, 0xf8,
-	0xb9, 0xb8, 0xfd, 0xfc, 0x43, 0xe2, 0x61, 0x02, 0x4c, 0x46, 0x51, 0x5c, 0x6c, 0x10, 0x8b, 0x84,
-	0x02, 0xb8, 0x58, 0xc1, 0x96, 0x09, 0x29, 0xe1, 0x75, 0x09, 0xd8, 0xbf, 0x52, 0xca, 0x44, 0xb8,
-	0xd6, 0x29, 0x91, 0x4b, 0x30, 0x33, 0x1f, 0x4d, 0xa1, 0x13, 0x37, 0x44, 0x65, 0x00, 0x28, 0x70,
-	0x03, 0x18, 0xa3, 0x74, 0xd2, 0xf3, 0xf3, 0xd3, 0x73, 0x52, 0xf5, 0xd2, 0xf3, 0x73, 0x12, 0xf3,
-	0xd2, 0xf5, 0xf2, 0x8b, 0xd2, 0xf5, 0x91, 0x63, 0x03, 0xc4, 0x8e, 0x87, 0xb0, 0xe3, 0xcb, 0x0c,
-	0x57, 0x31, 0xf1, 0xb9, 0x83, 0x4c, 0x83, 0x18, 0xa1, 0x17, 0x66, 0x98, 0xc4, 0x06, 0x8e, 0x24,
-	0x63, 0x40, 0x00, 0x00, 0x00, 0xff, 0xff, 0xec, 0x66, 0x81, 0xcb, 0xc3, 0x01, 0x00, 0x00,
-}
diff --git a/vendor/google.golang.org/grpc/interceptor.go b/vendor/google.golang.org/grpc/interceptor.go
deleted file mode 100644
index 1f6ef6780..000000000
--- a/vendor/google.golang.org/grpc/interceptor.go
+++ /dev/null
@@ -1,77 +0,0 @@
-/*
- *
- * Copyright 2016 gRPC authors.
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *     http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- *
- */
-
-package grpc
-
-import (
-	"golang.org/x/net/context"
-)
-
-// UnaryInvoker is called by UnaryClientInterceptor to complete RPCs.
-type UnaryInvoker func(ctx context.Context, method string, req, reply interface{}, cc *ClientConn, opts ...CallOption) error
-
-// UnaryClientInterceptor intercepts the execution of a unary RPC on the client. invoker is the handler to complete the RPC
-// and it is the responsibility of the interceptor to call it.
-// This is an EXPERIMENTAL API.
-type UnaryClientInterceptor func(ctx context.Context, method string, req, reply interface{}, cc *ClientConn, invoker UnaryInvoker, opts ...CallOption) error
-
-// Streamer is called by StreamClientInterceptor to create a ClientStream.
-type Streamer func(ctx context.Context, desc *StreamDesc, cc *ClientConn, method string, opts ...CallOption) (ClientStream, error)
-
-// StreamClientInterceptor intercepts the creation of ClientStream. It may return a custom ClientStream to intercept all I/O
-// operations. streamer is the handler to create a ClientStream and it is the responsibility of the interceptor to call it.
-// This is an EXPERIMENTAL API.
-type StreamClientInterceptor func(ctx context.Context, desc *StreamDesc, cc *ClientConn, method string, streamer Streamer, opts ...CallOption) (ClientStream, error)
-
-// UnaryServerInfo consists of various information about a unary RPC on
-// server side. All per-rpc information may be mutated by the interceptor.
-type UnaryServerInfo struct {
-	// Server is the service implementation the user provides. This is read-only.
-	Server interface{}
-	// FullMethod is the full RPC method string, i.e., /package.service/method.
-	FullMethod string
-}
-
-// UnaryHandler defines the handler invoked by UnaryServerInterceptor to complete the normal
-// execution of a unary RPC. If a UnaryHandler returns an error, it should be produced by the
-// status package, or else gRPC will use codes.Unknown as the status code and err.Error() as
-// the status message of the RPC.
-type UnaryHandler func(ctx context.Context, req interface{}) (interface{}, error)
-
-// UnaryServerInterceptor provides a hook to intercept the execution of a unary RPC on the server. info
-// contains all the information of this RPC the interceptor can operate on. And handler is the wrapper
-// of the service method implementation. It is the responsibility of the interceptor to invoke handler
-// to complete the RPC.
-type UnaryServerInterceptor func(ctx context.Context, req interface{}, info *UnaryServerInfo, handler UnaryHandler) (resp interface{}, err error)
-
-// StreamServerInfo consists of various information about a streaming RPC on
-// server side. All per-rpc information may be mutated by the interceptor.
-type StreamServerInfo struct {
-	// FullMethod is the full RPC method string, i.e., /package.service/method.
-	FullMethod string
-	// IsClientStream indicates whether the RPC is a client streaming RPC.
-	IsClientStream bool
-	// IsServerStream indicates whether the RPC is a server streaming RPC.
-	IsServerStream bool
-}
-
-// StreamServerInterceptor provides a hook to intercept the execution of a streaming RPC on the server.
-// info contains all the information of this RPC the interceptor can operate on. And handler is the
-// service method implementation. It is the responsibility of the interceptor to invoke handler to
-// complete the RPC.
-type StreamServerInterceptor func(srv interface{}, ss ServerStream, info *StreamServerInfo, handler StreamHandler) error
diff --git a/vendor/google.golang.org/grpc/internal/backoff/backoff.go b/vendor/google.golang.org/grpc/internal/backoff/backoff.go
deleted file mode 100644
index 1bd0cce5a..000000000
--- a/vendor/google.golang.org/grpc/internal/backoff/backoff.go
+++ /dev/null
@@ -1,78 +0,0 @@
-/*
- *
- * Copyright 2017 gRPC authors.
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *     http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- *
- */
-
-// Package backoff implement the backoff strategy for gRPC.
-//
-// This is kept in internal until the gRPC project decides whether or not to
-// allow alternative backoff strategies.
-package backoff
-
-import (
-	"time"
-
-	"google.golang.org/grpc/internal/grpcrand"
-)
-
-// Strategy defines the methodology for backing off after a grpc connection
-// failure.
-//
-type Strategy interface {
-	// Backoff returns the amount of time to wait before the next retry given
-	// the number of consecutive failures.
-	Backoff(retries int) time.Duration
-}
-
-const (
-	// baseDelay is the amount of time to wait before retrying after the first
-	// failure.
-	baseDelay = 1.0 * time.Second
-	// factor is applied to the backoff after each retry.
-	factor = 1.6
-	// jitter provides a range to randomize backoff delays.
-	jitter = 0.2
-)
-
-// Exponential implements exponential backoff algorithm as defined in
-// https://github.com/grpc/grpc/blob/master/doc/connection-backoff.md.
-type Exponential struct {
-	// MaxDelay is the upper bound of backoff delay.
-	MaxDelay time.Duration
-}
-
-// Backoff returns the amount of time to wait before the next retry given the
-// number of retries.
-func (bc Exponential) Backoff(retries int) time.Duration {
-	if retries == 0 {
-		return baseDelay
-	}
-	backoff, max := float64(baseDelay), float64(bc.MaxDelay)
-	for backoff < max && retries > 0 {
-		backoff *= factor
-		retries--
-	}
-	if backoff > max {
-		backoff = max
-	}
-	// Randomize backoff delays so that if a cluster of requests start at
-	// the same time, they won't operate in lockstep.
-	backoff *= 1 + jitter*(grpcrand.Float64()*2-1)
-	if backoff < 0 {
-		return 0
-	}
-	return time.Duration(backoff)
-}
diff --git a/vendor/google.golang.org/grpc/internal/channelz/funcs.go b/vendor/google.golang.org/grpc/internal/channelz/funcs.go
deleted file mode 100644
index 586a0336b..000000000
--- a/vendor/google.golang.org/grpc/internal/channelz/funcs.go
+++ /dev/null
@@ -1,573 +0,0 @@
-/*
- *
- * Copyright 2018 gRPC authors.
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *     http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- *
- */
-
-// Package channelz defines APIs for enabling channelz service, entry
-// registration/deletion, and accessing channelz data. It also defines channelz
-// metric struct formats.
-//
-// All APIs in this package are experimental.
-package channelz
-
-import (
-	"sort"
-	"sync"
-	"sync/atomic"
-
-	"google.golang.org/grpc/grpclog"
-)
-
-var (
-	db    dbWrapper
-	idGen idGenerator
-	// EntryPerPage defines the number of channelz entries to be shown on a web page.
-	EntryPerPage = 50
-	curState     int32
-)
-
-// TurnOn turns on channelz data collection.
-func TurnOn() {
-	if !IsOn() {
-		NewChannelzStorage()
-		atomic.StoreInt32(&curState, 1)
-	}
-}
-
-// IsOn returns whether channelz data collection is on.
-func IsOn() bool {
-	return atomic.CompareAndSwapInt32(&curState, 1, 1)
-}
-
-// dbWarpper wraps around a reference to internal channelz data storage, and
-// provide synchronized functionality to set and get the reference.
-type dbWrapper struct {
-	mu sync.RWMutex
-	DB *channelMap
-}
-
-func (d *dbWrapper) set(db *channelMap) {
-	d.mu.Lock()
-	d.DB = db
-	d.mu.Unlock()
-}
-
-func (d *dbWrapper) get() *channelMap {
-	d.mu.RLock()
-	defer d.mu.RUnlock()
-	return d.DB
-}
-
-// NewChannelzStorage initializes channelz data storage and id generator.
-//
-// Note: This function is exported for testing purpose only. User should not call
-// it in most cases.
-func NewChannelzStorage() {
-	db.set(&channelMap{
-		topLevelChannels: make(map[int64]struct{}),
-		channels:         make(map[int64]*channel),
-		listenSockets:    make(map[int64]*listenSocket),
-		normalSockets:    make(map[int64]*normalSocket),
-		servers:          make(map[int64]*server),
-		subChannels:      make(map[int64]*subChannel),
-	})
-	idGen.reset()
-}
-
-// GetTopChannels returns a slice of top channel's ChannelMetric, along with a
-// boolean indicating whether there's more top channels to be queried for.
-//
-// The arg id specifies that only top channel with id at or above it will be included
-// in the result. The returned slice is up to a length of EntryPerPage, and is
-// sorted in ascending id order.
-func GetTopChannels(id int64) ([]*ChannelMetric, bool) {
-	return db.get().GetTopChannels(id)
-}
-
-// GetServers returns a slice of server's ServerMetric, along with a
-// boolean indicating whether there's more servers to be queried for.
-//
-// The arg id specifies that only server with id at or above it will be included
-// in the result. The returned slice is up to a length of EntryPerPage, and is
-// sorted in ascending id order.
-func GetServers(id int64) ([]*ServerMetric, bool) {
-	return db.get().GetServers(id)
-}
-
-// GetServerSockets returns a slice of server's (identified by id) normal socket's
-// SocketMetric, along with a boolean indicating whether there's more sockets to
-// be queried for.
-//
-// The arg startID specifies that only sockets with id at or above it will be
-// included in the result. The returned slice is up to a length of EntryPerPage,
-// and is sorted in ascending id order.
-func GetServerSockets(id int64, startID int64) ([]*SocketMetric, bool) {
-	return db.get().GetServerSockets(id, startID)
-}
-
-// GetChannel returns the ChannelMetric for the channel (identified by id).
-func GetChannel(id int64) *ChannelMetric {
-	return db.get().GetChannel(id)
-}
-
-// GetSubChannel returns the SubChannelMetric for the subchannel (identified by id).
-func GetSubChannel(id int64) *SubChannelMetric {
-	return db.get().GetSubChannel(id)
-}
-
-// GetSocket returns the SocketInternalMetric for the socket (identified by id).
-func GetSocket(id int64) *SocketMetric {
-	return db.get().GetSocket(id)
-}
-
-// RegisterChannel registers the given channel c in channelz database with ref
-// as its reference name, and add it to the child list of its parent (identified
-// by pid). pid = 0 means no parent. It returns the unique channelz tracking id
-// assigned to this channel.
-func RegisterChannel(c Channel, pid int64, ref string) int64 {
-	id := idGen.genID()
-	cn := &channel{
-		refName:     ref,
-		c:           c,
-		subChans:    make(map[int64]string),
-		nestedChans: make(map[int64]string),
-		id:          id,
-		pid:         pid,
-	}
-	if pid == 0 {
-		db.get().addChannel(id, cn, true, pid, ref)
-	} else {
-		db.get().addChannel(id, cn, false, pid, ref)
-	}
-	return id
-}
-
-// RegisterSubChannel registers the given channel c in channelz database with ref
-// as its reference name, and add it to the child list of its parent (identified
-// by pid). It returns the unique channelz tracking id assigned to this subchannel.
-func RegisterSubChannel(c Channel, pid int64, ref string) int64 {
-	if pid == 0 {
-		grpclog.Error("a SubChannel's parent id cannot be 0")
-		return 0
-	}
-	id := idGen.genID()
-	sc := &subChannel{
-		refName: ref,
-		c:       c,
-		sockets: make(map[int64]string),
-		id:      id,
-		pid:     pid,
-	}
-	db.get().addSubChannel(id, sc, pid, ref)
-	return id
-}
-
-// RegisterServer registers the given server s in channelz database. It returns
-// the unique channelz tracking id assigned to this server.
-func RegisterServer(s Server, ref string) int64 {
-	id := idGen.genID()
-	svr := &server{
-		refName:       ref,
-		s:             s,
-		sockets:       make(map[int64]string),
-		listenSockets: make(map[int64]string),
-		id:            id,
-	}
-	db.get().addServer(id, svr)
-	return id
-}
-
-// RegisterListenSocket registers the given listen socket s in channelz database
-// with ref as its reference name, and add it to the child list of its parent
-// (identified by pid). It returns the unique channelz tracking id assigned to
-// this listen socket.
-func RegisterListenSocket(s Socket, pid int64, ref string) int64 {
-	if pid == 0 {
-		grpclog.Error("a ListenSocket's parent id cannot be 0")
-		return 0
-	}
-	id := idGen.genID()
-	ls := &listenSocket{refName: ref, s: s, id: id, pid: pid}
-	db.get().addListenSocket(id, ls, pid, ref)
-	return id
-}
-
-// RegisterNormalSocket registers the given normal socket s in channelz database
-// with ref as its reference name, and add it to the child list of its parent
-// (identified by pid). It returns the unique channelz tracking id assigned to
-// this normal socket.
-func RegisterNormalSocket(s Socket, pid int64, ref string) int64 {
-	if pid == 0 {
-		grpclog.Error("a NormalSocket's parent id cannot be 0")
-		return 0
-	}
-	id := idGen.genID()
-	ns := &normalSocket{refName: ref, s: s, id: id, pid: pid}
-	db.get().addNormalSocket(id, ns, pid, ref)
-	return id
-}
-
-// RemoveEntry removes an entry with unique channelz trakcing id to be id from
-// channelz database.
-func RemoveEntry(id int64) {
-	db.get().removeEntry(id)
-}
-
-// channelMap is the storage data structure for channelz.
-// Methods of channelMap can be divided in two two categories with respect to locking.
-// 1. Methods acquire the global lock.
-// 2. Methods that can only be called when global lock is held.
-// A second type of method need always to be called inside a first type of method.
-type channelMap struct {
-	mu               sync.RWMutex
-	topLevelChannels map[int64]struct{}
-	servers          map[int64]*server
-	channels         map[int64]*channel
-	subChannels      map[int64]*subChannel
-	listenSockets    map[int64]*listenSocket
-	normalSockets    map[int64]*normalSocket
-}
-
-func (c *channelMap) addServer(id int64, s *server) {
-	c.mu.Lock()
-	s.cm = c
-	c.servers[id] = s
-	c.mu.Unlock()
-}
-
-func (c *channelMap) addChannel(id int64, cn *channel, isTopChannel bool, pid int64, ref string) {
-	c.mu.Lock()
-	cn.cm = c
-	c.channels[id] = cn
-	if isTopChannel {
-		c.topLevelChannels[id] = struct{}{}
-	} else {
-		c.findEntry(pid).addChild(id, cn)
-	}
-	c.mu.Unlock()
-}
-
-func (c *channelMap) addSubChannel(id int64, sc *subChannel, pid int64, ref string) {
-	c.mu.Lock()
-	sc.cm = c
-	c.subChannels[id] = sc
-	c.findEntry(pid).addChild(id, sc)
-	c.mu.Unlock()
-}
-
-func (c *channelMap) addListenSocket(id int64, ls *listenSocket, pid int64, ref string) {
-	c.mu.Lock()
-	ls.cm = c
-	c.listenSockets[id] = ls
-	c.findEntry(pid).addChild(id, ls)
-	c.mu.Unlock()
-}
-
-func (c *channelMap) addNormalSocket(id int64, ns *normalSocket, pid int64, ref string) {
-	c.mu.Lock()
-	ns.cm = c
-	c.normalSockets[id] = ns
-	c.findEntry(pid).addChild(id, ns)
-	c.mu.Unlock()
-}
-
-// removeEntry triggers the removal of an entry, which may not indeed delete the
-// entry, if it has to wait on the deletion of its children, or may lead to a chain
-// of entry deletion. For example, deleting the last socket of a gracefully shutting
-// down server will lead to the server being also deleted.
-func (c *channelMap) removeEntry(id int64) {
-	c.mu.Lock()
-	c.findEntry(id).triggerDelete()
-	c.mu.Unlock()
-}
-
-// c.mu must be held by the caller.
-func (c *channelMap) findEntry(id int64) entry {
-	var v entry
-	var ok bool
-	if v, ok = c.channels[id]; ok {
-		return v
-	}
-	if v, ok = c.subChannels[id]; ok {
-		return v
-	}
-	if v, ok = c.servers[id]; ok {
-		return v
-	}
-	if v, ok = c.listenSockets[id]; ok {
-		return v
-	}
-	if v, ok = c.normalSockets[id]; ok {
-		return v
-	}
-	return &dummyEntry{idNotFound: id}
-}
-
-// c.mu must be held by the caller
-// deleteEntry simply deletes an entry from the channelMap. Before calling this
-// method, caller must check this entry is ready to be deleted, i.e removeEntry()
-// has been called on it, and no children still exist.
-// Conditionals are ordered by the expected frequency of deletion of each entity
-// type, in order to optimize performance.
-func (c *channelMap) deleteEntry(id int64) {
-	var ok bool
-	if _, ok = c.normalSockets[id]; ok {
-		delete(c.normalSockets, id)
-		return
-	}
-	if _, ok = c.subChannels[id]; ok {
-		delete(c.subChannels, id)
-		return
-	}
-	if _, ok = c.channels[id]; ok {
-		delete(c.channels, id)
-		delete(c.topLevelChannels, id)
-		return
-	}
-	if _, ok = c.listenSockets[id]; ok {
-		delete(c.listenSockets, id)
-		return
-	}
-	if _, ok = c.servers[id]; ok {
-		delete(c.servers, id)
-		return
-	}
-}
-
-type int64Slice []int64
-
-func (s int64Slice) Len() int           { return len(s) }
-func (s int64Slice) Swap(i, j int)      { s[i], s[j] = s[j], s[i] }
-func (s int64Slice) Less(i, j int) bool { return s[i] < s[j] }
-
-func copyMap(m map[int64]string) map[int64]string {
-	n := make(map[int64]string)
-	for k, v := range m {
-		n[k] = v
-	}
-	return n
-}
-
-func min(a, b int) int {
-	if a < b {
-		return a
-	}
-	return b
-}
-
-func (c *channelMap) GetTopChannels(id int64) ([]*ChannelMetric, bool) {
-	c.mu.RLock()
-	l := len(c.topLevelChannels)
-	ids := make([]int64, 0, l)
-	cns := make([]*channel, 0, min(l, EntryPerPage))
-
-	for k := range c.topLevelChannels {
-		ids = append(ids, k)
-	}
-	sort.Sort(int64Slice(ids))
-	idx := sort.Search(len(ids), func(i int) bool { return ids[i] >= id })
-	count := 0
-	var end bool
-	var t []*ChannelMetric
-	for i, v := range ids[idx:] {
-		if count == EntryPerPage {
-			break
-		}
-		if cn, ok := c.channels[v]; ok {
-			cns = append(cns, cn)
-			t = append(t, &ChannelMetric{
-				NestedChans: copyMap(cn.nestedChans),
-				SubChans:    copyMap(cn.subChans),
-			})
-			count++
-		}
-		if i == len(ids[idx:])-1 {
-			end = true
-			break
-		}
-	}
-	c.mu.RUnlock()
-	if count == 0 {
-		end = true
-	}
-
-	for i, cn := range cns {
-		t[i].ChannelData = cn.c.ChannelzMetric()
-		t[i].ID = cn.id
-		t[i].RefName = cn.refName
-	}
-	return t, end
-}
-
-func (c *channelMap) GetServers(id int64) ([]*ServerMetric, bool) {
-	c.mu.RLock()
-	l := len(c.servers)
-	ids := make([]int64, 0, l)
-	ss := make([]*server, 0, min(l, EntryPerPage))
-	for k := range c.servers {
-		ids = append(ids, k)
-	}
-	sort.Sort(int64Slice(ids))
-	idx := sort.Search(len(ids), func(i int) bool { return ids[i] >= id })
-	count := 0
-	var end bool
-	var s []*ServerMetric
-	for i, v := range ids[idx:] {
-		if count == EntryPerPage {
-			break
-		}
-		if svr, ok := c.servers[v]; ok {
-			ss = append(ss, svr)
-			s = append(s, &ServerMetric{
-				ListenSockets: copyMap(svr.listenSockets),
-			})
-			count++
-		}
-		if i == len(ids[idx:])-1 {
-			end = true
-			break
-		}
-	}
-	c.mu.RUnlock()
-	if count == 0 {
-		end = true
-	}
-
-	for i, svr := range ss {
-		s[i].ServerData = svr.s.ChannelzMetric()
-		s[i].ID = svr.id
-		s[i].RefName = svr.refName
-	}
-	return s, end
-}
-
-func (c *channelMap) GetServerSockets(id int64, startID int64) ([]*SocketMetric, bool) {
-	var svr *server
-	var ok bool
-	c.mu.RLock()
-	if svr, ok = c.servers[id]; !ok {
-		// server with id doesn't exist.
-		c.mu.RUnlock()
-		return nil, true
-	}
-	svrskts := svr.sockets
-	l := len(svrskts)
-	ids := make([]int64, 0, l)
-	sks := make([]*normalSocket, 0, min(l, EntryPerPage))
-	for k := range svrskts {
-		ids = append(ids, k)
-	}
-	sort.Sort((int64Slice(ids)))
-	idx := sort.Search(len(ids), func(i int) bool { return ids[i] >= id })
-	count := 0
-	var end bool
-	for i, v := range ids[idx:] {
-		if count == EntryPerPage {
-			break
-		}
-		if ns, ok := c.normalSockets[v]; ok {
-			sks = append(sks, ns)
-			count++
-		}
-		if i == len(ids[idx:])-1 {
-			end = true
-			break
-		}
-	}
-	c.mu.RUnlock()
-	if count == 0 {
-		end = true
-	}
-	var s []*SocketMetric
-	for _, ns := range sks {
-		sm := &SocketMetric{}
-		sm.SocketData = ns.s.ChannelzMetric()
-		sm.ID = ns.id
-		sm.RefName = ns.refName
-		s = append(s, sm)
-	}
-	return s, end
-}
-
-func (c *channelMap) GetChannel(id int64) *ChannelMetric {
-	cm := &ChannelMetric{}
-	var cn *channel
-	var ok bool
-	c.mu.RLock()
-	if cn, ok = c.channels[id]; !ok {
-		// channel with id doesn't exist.
-		c.mu.RUnlock()
-		return nil
-	}
-	cm.NestedChans = copyMap(cn.nestedChans)
-	cm.SubChans = copyMap(cn.subChans)
-	c.mu.RUnlock()
-	cm.ChannelData = cn.c.ChannelzMetric()
-	cm.ID = cn.id
-	cm.RefName = cn.refName
-	return cm
-}
-
-func (c *channelMap) GetSubChannel(id int64) *SubChannelMetric {
-	cm := &SubChannelMetric{}
-	var sc *subChannel
-	var ok bool
-	c.mu.RLock()
-	if sc, ok = c.subChannels[id]; !ok {
-		// subchannel with id doesn't exist.
-		c.mu.RUnlock()
-		return nil
-	}
-	cm.Sockets = copyMap(sc.sockets)
-	c.mu.RUnlock()
-	cm.ChannelData = sc.c.ChannelzMetric()
-	cm.ID = sc.id
-	cm.RefName = sc.refName
-	return cm
-}
-
-func (c *channelMap) GetSocket(id int64) *SocketMetric {
-	sm := &SocketMetric{}
-	c.mu.RLock()
-	if ls, ok := c.listenSockets[id]; ok {
-		c.mu.RUnlock()
-		sm.SocketData = ls.s.ChannelzMetric()
-		sm.ID = ls.id
-		sm.RefName = ls.refName
-		return sm
-	}
-	if ns, ok := c.normalSockets[id]; ok {
-		c.mu.RUnlock()
-		sm.SocketData = ns.s.ChannelzMetric()
-		sm.ID = ns.id
-		sm.RefName = ns.refName
-		return sm
-	}
-	c.mu.RUnlock()
-	return nil
-}
-
-type idGenerator struct {
-	id int64
-}
-
-func (i *idGenerator) reset() {
-	atomic.StoreInt64(&i.id, 0)
-}
-
-func (i *idGenerator) genID() int64 {
-	return atomic.AddInt64(&i.id, 1)
-}
diff --git a/vendor/google.golang.org/grpc/internal/channelz/types.go b/vendor/google.golang.org/grpc/internal/channelz/types.go
deleted file mode 100644
index 153d75340..000000000
--- a/vendor/google.golang.org/grpc/internal/channelz/types.go
+++ /dev/null
@@ -1,418 +0,0 @@
-/*
- *
- * Copyright 2018 gRPC authors.
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *     http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- *
- */
-
-package channelz
-
-import (
-	"net"
-	"time"
-
-	"google.golang.org/grpc/connectivity"
-	"google.golang.org/grpc/grpclog"
-)
-
-// entry represents a node in the channelz database.
-type entry interface {
-	// addChild adds a child e, whose channelz id is id to child list
-	addChild(id int64, e entry)
-	// deleteChild deletes a child with channelz id to be id from child list
-	deleteChild(id int64)
-	// triggerDelete tries to delete self from channelz database. However, if child
-	// list is not empty, then deletion from the database is on hold until the last
-	// child is deleted from database.
-	triggerDelete()
-	// deleteSelfIfReady check whether triggerDelete() has been called before, and whether child
-	// list is now empty. If both conditions are met, then delete self from database.
-	deleteSelfIfReady()
-}
-
-// dummyEntry is a fake entry to handle entry not found case.
-type dummyEntry struct {
-	idNotFound int64
-}
-
-func (d *dummyEntry) addChild(id int64, e entry) {
-	// Note: It is possible for a normal program to reach here under race condition.
-	// For example, there could be a race between ClientConn.Close() info being propagated
-	// to addrConn and http2Client. ClientConn.Close() cancel the context and result
-	// in http2Client to error. The error info is then caught by transport monitor
-	// and before addrConn.tearDown() is called in side ClientConn.Close(). Therefore,
-	// the addrConn will create a new transport. And when registering the new transport in
-	// channelz, its parent addrConn could have already been torn down and deleted
-	// from channelz tracking, and thus reach the code here.
-	grpclog.Infof("attempt to add child of type %T with id %d to a parent (id=%d) that doesn't currently exist", e, id, d.idNotFound)
-}
-
-func (d *dummyEntry) deleteChild(id int64) {
-	// It is possible for a normal program to reach here under race condition.
-	// Refer to the example described in addChild().
-	grpclog.Infof("attempt to delete child with id %d from a parent (id=%d) that doesn't currently exist", id, d.idNotFound)
-}
-
-func (d *dummyEntry) triggerDelete() {
-	grpclog.Warningf("attempt to delete an entry (id=%d) that doesn't currently exist", d.idNotFound)
-}
-
-func (*dummyEntry) deleteSelfIfReady() {
-	// code should not reach here. deleteSelfIfReady is always called on an existing entry.
-}
-
-// ChannelMetric defines the info channelz provides for a specific Channel, which
-// includes ChannelInternalMetric and channelz-specific data, such as channelz id,
-// child list, etc.
-type ChannelMetric struct {
-	// ID is the channelz id of this channel.
-	ID int64
-	// RefName is the human readable reference string of this channel.
-	RefName string
-	// ChannelData contains channel internal metric reported by the channel through
-	// ChannelzMetric().
-	ChannelData *ChannelInternalMetric
-	// NestedChans tracks the nested channel type children of this channel in the format of
-	// a map from nested channel channelz id to corresponding reference string.
-	NestedChans map[int64]string
-	// SubChans tracks the subchannel type children of this channel in the format of a
-	// map from subchannel channelz id to corresponding reference string.
-	SubChans map[int64]string
-	// Sockets tracks the socket type children of this channel in the format of a map
-	// from socket channelz id to corresponding reference string.
-	// Note current grpc implementation doesn't allow channel having sockets directly,
-	// therefore, this is field is unused.
-	Sockets map[int64]string
-}
-
-// SubChannelMetric defines the info channelz provides for a specific SubChannel,
-// which includes ChannelInternalMetric and channelz-specific data, such as
-// channelz id, child list, etc.
-type SubChannelMetric struct {
-	// ID is the channelz id of this subchannel.
-	ID int64
-	// RefName is the human readable reference string of this subchannel.
-	RefName string
-	// ChannelData contains subchannel internal metric reported by the subchannel
-	// through ChannelzMetric().
-	ChannelData *ChannelInternalMetric
-	// NestedChans tracks the nested channel type children of this subchannel in the format of
-	// a map from nested channel channelz id to corresponding reference string.
-	// Note current grpc implementation doesn't allow subchannel to have nested channels
-	// as children, therefore, this field is unused.
-	NestedChans map[int64]string
-	// SubChans tracks the subchannel type children of this subchannel in the format of a
-	// map from subchannel channelz id to corresponding reference string.
-	// Note current grpc implementation doesn't allow subchannel to have subchannels
-	// as children, therefore, this field is unused.
-	SubChans map[int64]string
-	// Sockets tracks the socket type children of this subchannel in the format of a map
-	// from socket channelz id to corresponding reference string.
-	Sockets map[int64]string
-}
-
-// ChannelInternalMetric defines the struct that the implementor of Channel interface
-// should return from ChannelzMetric().
-type ChannelInternalMetric struct {
-	// current connectivity state of the channel.
-	State connectivity.State
-	// The target this channel originally tried to connect to.  May be absent
-	Target string
-	// The number of calls started on the channel.
-	CallsStarted int64
-	// The number of calls that have completed with an OK status.
-	CallsSucceeded int64
-	// The number of calls that have a completed with a non-OK status.
-	CallsFailed int64
-	// The last time a call was started on the channel.
-	LastCallStartedTimestamp time.Time
-	//TODO: trace
-}
-
-// Channel is the interface that should be satisfied in order to be tracked by
-// channelz as Channel or SubChannel.
-type Channel interface {
-	ChannelzMetric() *ChannelInternalMetric
-}
-
-type channel struct {
-	refName     string
-	c           Channel
-	closeCalled bool
-	nestedChans map[int64]string
-	subChans    map[int64]string
-	id          int64
-	pid         int64
-	cm          *channelMap
-}
-
-func (c *channel) addChild(id int64, e entry) {
-	switch v := e.(type) {
-	case *subChannel:
-		c.subChans[id] = v.refName
-	case *channel:
-		c.nestedChans[id] = v.refName
-	default:
-		grpclog.Errorf("cannot add a child (id = %d) of type %T to a channel", id, e)
-	}
-}
-
-func (c *channel) deleteChild(id int64) {
-	delete(c.subChans, id)
-	delete(c.nestedChans, id)
-	c.deleteSelfIfReady()
-}
-
-func (c *channel) triggerDelete() {
-	c.closeCalled = true
-	c.deleteSelfIfReady()
-}
-
-func (c *channel) deleteSelfIfReady() {
-	if !c.closeCalled || len(c.subChans)+len(c.nestedChans) != 0 {
-		return
-	}
-	c.cm.deleteEntry(c.id)
-	// not top channel
-	if c.pid != 0 {
-		c.cm.findEntry(c.pid).deleteChild(c.id)
-	}
-}
-
-type subChannel struct {
-	refName     string
-	c           Channel
-	closeCalled bool
-	sockets     map[int64]string
-	id          int64
-	pid         int64
-	cm          *channelMap
-}
-
-func (sc *subChannel) addChild(id int64, e entry) {
-	if v, ok := e.(*normalSocket); ok {
-		sc.sockets[id] = v.refName
-	} else {
-		grpclog.Errorf("cannot add a child (id = %d) of type %T to a subChannel", id, e)
-	}
-}
-
-func (sc *subChannel) deleteChild(id int64) {
-	delete(sc.sockets, id)
-	sc.deleteSelfIfReady()
-}
-
-func (sc *subChannel) triggerDelete() {
-	sc.closeCalled = true
-	sc.deleteSelfIfReady()
-}
-
-func (sc *subChannel) deleteSelfIfReady() {
-	if !sc.closeCalled || len(sc.sockets) != 0 {
-		return
-	}
-	sc.cm.deleteEntry(sc.id)
-	sc.cm.findEntry(sc.pid).deleteChild(sc.id)
-}
-
-// SocketMetric defines the info channelz provides for a specific Socket, which
-// includes SocketInternalMetric and channelz-specific data, such as channelz id, etc.
-type SocketMetric struct {
-	// ID is the channelz id of this socket.
-	ID int64
-	// RefName is the human readable reference string of this socket.
-	RefName string
-	// SocketData contains socket internal metric reported by the socket through
-	// ChannelzMetric().
-	SocketData *SocketInternalMetric
-}
-
-// SocketInternalMetric defines the struct that the implementor of Socket interface
-// should return from ChannelzMetric().
-type SocketInternalMetric struct {
-	// The number of streams that have been started.
-	StreamsStarted int64
-	// The number of streams that have ended successfully:
-	// On client side, receiving frame with eos bit set.
-	// On server side, sending frame with eos bit set.
-	StreamsSucceeded int64
-	// The number of streams that have ended unsuccessfully:
-	// On client side, termination without receiving frame with eos bit set.
-	// On server side, termination without sending frame with eos bit set.
-	StreamsFailed int64
-	// The number of messages successfully sent on this socket.
-	MessagesSent     int64
-	MessagesReceived int64
-	// The number of keep alives sent.  This is typically implemented with HTTP/2
-	// ping messages.
-	KeepAlivesSent int64
-	// The last time a stream was created by this endpoint.  Usually unset for
-	// servers.
-	LastLocalStreamCreatedTimestamp time.Time
-	// The last time a stream was created by the remote endpoint.  Usually unset
-	// for clients.
-	LastRemoteStreamCreatedTimestamp time.Time
-	// The last time a message was sent by this endpoint.
-	LastMessageSentTimestamp time.Time
-	// The last time a message was received by this endpoint.
-	LastMessageReceivedTimestamp time.Time
-	// The amount of window, granted to the local endpoint by the remote endpoint.
-	// This may be slightly out of date due to network latency.  This does NOT
-	// include stream level or TCP level flow control info.
-	LocalFlowControlWindow int64
-	// The amount of window, granted to the remote endpoint by the local endpoint.
-	// This may be slightly out of date due to network latency.  This does NOT
-	// include stream level or TCP level flow control info.
-	RemoteFlowControlWindow int64
-	// The locally bound address.
-	LocalAddr net.Addr
-	// The remote bound address.  May be absent.
-	RemoteAddr net.Addr
-	// Optional, represents the name of the remote endpoint, if different than
-	// the original target name.
-	RemoteName string
-	//TODO: socket options
-	//TODO: Security
-}
-
-// Socket is the interface that should be satisfied in order to be tracked by
-// channelz as Socket.
-type Socket interface {
-	ChannelzMetric() *SocketInternalMetric
-}
-
-type listenSocket struct {
-	refName string
-	s       Socket
-	id      int64
-	pid     int64
-	cm      *channelMap
-}
-
-func (ls *listenSocket) addChild(id int64, e entry) {
-	grpclog.Errorf("cannot add a child (id = %d) of type %T to a listen socket", id, e)
-}
-
-func (ls *listenSocket) deleteChild(id int64) {
-	grpclog.Errorf("cannot delete a child (id = %d) from a listen socket", id)
-}
-
-func (ls *listenSocket) triggerDelete() {
-	ls.cm.deleteEntry(ls.id)
-	ls.cm.findEntry(ls.pid).deleteChild(ls.id)
-}
-
-func (ls *listenSocket) deleteSelfIfReady() {
-	grpclog.Errorf("cannot call deleteSelfIfReady on a listen socket")
-}
-
-type normalSocket struct {
-	refName string
-	s       Socket
-	id      int64
-	pid     int64
-	cm      *channelMap
-}
-
-func (ns *normalSocket) addChild(id int64, e entry) {
-	grpclog.Errorf("cannot add a child (id = %d) of type %T to a normal socket", id, e)
-}
-
-func (ns *normalSocket) deleteChild(id int64) {
-	grpclog.Errorf("cannot delete a child (id = %d) from a normal socket", id)
-}
-
-func (ns *normalSocket) triggerDelete() {
-	ns.cm.deleteEntry(ns.id)
-	ns.cm.findEntry(ns.pid).deleteChild(ns.id)
-}
-
-func (ns *normalSocket) deleteSelfIfReady() {
-	grpclog.Errorf("cannot call deleteSelfIfReady on a normal socket")
-}
-
-// ServerMetric defines the info channelz provides for a specific Server, which
-// includes ServerInternalMetric and channelz-specific data, such as channelz id,
-// child list, etc.
-type ServerMetric struct {
-	// ID is the channelz id of this server.
-	ID int64
-	// RefName is the human readable reference string of this server.
-	RefName string
-	// ServerData contains server internal metric reported by the server through
-	// ChannelzMetric().
-	ServerData *ServerInternalMetric
-	// ListenSockets tracks the listener socket type children of this server in the
-	// format of a map from socket channelz id to corresponding reference string.
-	ListenSockets map[int64]string
-}
-
-// ServerInternalMetric defines the struct that the implementor of Server interface
-// should return from ChannelzMetric().
-type ServerInternalMetric struct {
-	// The number of incoming calls started on the server.
-	CallsStarted int64
-	// The number of incoming calls that have completed with an OK status.
-	CallsSucceeded int64
-	// The number of incoming calls that have a completed with a non-OK status.
-	CallsFailed int64
-	// The last time a call was started on the server.
-	LastCallStartedTimestamp time.Time
-	//TODO: trace
-}
-
-// Server is the interface to be satisfied in order to be tracked by channelz as
-// Server.
-type Server interface {
-	ChannelzMetric() *ServerInternalMetric
-}
-
-type server struct {
-	refName       string
-	s             Server
-	closeCalled   bool
-	sockets       map[int64]string
-	listenSockets map[int64]string
-	id            int64
-	cm            *channelMap
-}
-
-func (s *server) addChild(id int64, e entry) {
-	switch v := e.(type) {
-	case *normalSocket:
-		s.sockets[id] = v.refName
-	case *listenSocket:
-		s.listenSockets[id] = v.refName
-	default:
-		grpclog.Errorf("cannot add a child (id = %d) of type %T to a server", id, e)
-	}
-}
-
-func (s *server) deleteChild(id int64) {
-	delete(s.sockets, id)
-	delete(s.listenSockets, id)
-	s.deleteSelfIfReady()
-}
-
-func (s *server) triggerDelete() {
-	s.closeCalled = true
-	s.deleteSelfIfReady()
-}
-
-func (s *server) deleteSelfIfReady() {
-	if !s.closeCalled || len(s.sockets)+len(s.listenSockets) != 0 {
-		return
-	}
-	s.cm.deleteEntry(s.id)
-}
diff --git a/vendor/google.golang.org/grpc/internal/grpcrand/grpcrand.go b/vendor/google.golang.org/grpc/internal/grpcrand/grpcrand.go
deleted file mode 100644
index 200b115ca..000000000
--- a/vendor/google.golang.org/grpc/internal/grpcrand/grpcrand.go
+++ /dev/null
@@ -1,56 +0,0 @@
-/*
- *
- * Copyright 2018 gRPC authors.
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *     http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- *
- */
-
-// Package grpcrand implements math/rand functions in a concurrent-safe way
-// with a global random source, independent of math/rand's global source.
-package grpcrand
-
-import (
-	"math/rand"
-	"sync"
-	"time"
-)
-
-var (
-	r  = rand.New(rand.NewSource(time.Now().UnixNano()))
-	mu sync.Mutex
-)
-
-// Int63n implements rand.Int63n on the grpcrand global source.
-func Int63n(n int64) int64 {
-	mu.Lock()
-	res := r.Int63n(n)
-	mu.Unlock()
-	return res
-}
-
-// Intn implements rand.Intn on the grpcrand global source.
-func Intn(n int) int {
-	mu.Lock()
-	res := r.Intn(n)
-	mu.Unlock()
-	return res
-}
-
-// Float64 implements rand.Float64 on the grpcrand global source.
-func Float64() float64 {
-	mu.Lock()
-	res := r.Float64()
-	mu.Unlock()
-	return res
-}
diff --git a/vendor/google.golang.org/grpc/internal/internal.go b/vendor/google.golang.org/grpc/internal/internal.go
deleted file mode 100644
index cd34267f7..000000000
--- a/vendor/google.golang.org/grpc/internal/internal.go
+++ /dev/null
@@ -1,36 +0,0 @@
-/*
- * Copyright 2016 gRPC authors.
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *     http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- *
- */
-
-// Package internal contains gRPC-internal code, to avoid polluting
-// the godoc of the top-level grpc package.  It must not import any grpc
-// symbols to avoid circular dependencies.
-package internal
-
-var (
-
-	// TestingUseHandlerImpl enables the http.Handler-based server implementation.
-	// It must be called before Serve and requires TLS credentials.
-	//
-	// The provided grpcServer must be of type *grpc.Server. It is untyped
-	// for circular dependency reasons.
-	TestingUseHandlerImpl func(grpcServer interface{})
-
-	// WithContextDialer is exported by clientconn.go
-	WithContextDialer interface{} // func(context.Context, string) (net.Conn, error) grpc.DialOption
-	// WithResolverBuilder is exported by clientconn.go
-	WithResolverBuilder interface{} // func (resolver.Builder) grpc.DialOption
-)
diff --git a/vendor/google.golang.org/grpc/keepalive/keepalive.go b/vendor/google.golang.org/grpc/keepalive/keepalive.go
deleted file mode 100644
index f8adc7e6d..000000000
--- a/vendor/google.golang.org/grpc/keepalive/keepalive.go
+++ /dev/null
@@ -1,65 +0,0 @@
-/*
- *
- * Copyright 2017 gRPC authors.
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *     http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- *
- */
-
-// Package keepalive defines configurable parameters for point-to-point healthcheck.
-package keepalive
-
-import (
-	"time"
-)
-
-// ClientParameters is used to set keepalive parameters on the client-side.
-// These configure how the client will actively probe to notice when a connection is broken
-// and send pings so intermediaries will be aware of the liveness of the connection.
-// Make sure these parameters are set in coordination with the keepalive policy on the server,
-// as incompatible settings can result in closing of connection.
-type ClientParameters struct {
-	// After a duration of this time if the client doesn't see any activity it pings the server to see if the transport is still alive.
-	Time time.Duration // The current default value is infinity.
-	// After having pinged for keepalive check, the client waits for a duration of Timeout and if no activity is seen even after that
-	// the connection is closed.
-	Timeout time.Duration // The current default value is 20 seconds.
-	// If true, client runs keepalive checks even with no active RPCs.
-	PermitWithoutStream bool // false by default.
-}
-
-// ServerParameters is used to set keepalive and max-age parameters on the server-side.
-type ServerParameters struct {
-	// MaxConnectionIdle is a duration for the amount of time after which an idle connection would be closed by sending a GoAway.
-	// Idleness duration is defined since the most recent time the number of outstanding RPCs became zero or the connection establishment.
-	MaxConnectionIdle time.Duration // The current default value is infinity.
-	// MaxConnectionAge is a duration for the maximum amount of time a connection may exist before it will be closed by sending a GoAway.
-	// A random jitter of +/-10% will be added to MaxConnectionAge to spread out connection storms.
-	MaxConnectionAge time.Duration // The current default value is infinity.
-	// MaxConnectinoAgeGrace is an additive period after MaxConnectionAge after which the connection will be forcibly closed.
-	MaxConnectionAgeGrace time.Duration // The current default value is infinity.
-	// After a duration of this time if the server doesn't see any activity it pings the client to see if the transport is still alive.
-	Time time.Duration // The current default value is 2 hours.
-	// After having pinged for keepalive check, the server waits for a duration of Timeout and if no activity is seen even after that
-	// the connection is closed.
-	Timeout time.Duration // The current default value is 20 seconds.
-}
-
-// EnforcementPolicy is used to set keepalive enforcement policy on the server-side.
-// Server will close connection with a client that violates this policy.
-type EnforcementPolicy struct {
-	// MinTime is the minimum amount of time a client should wait before sending a keepalive ping.
-	MinTime time.Duration // The current default value is 5 minutes.
-	// If true, server expects keepalive pings even when there are no active streams(RPCs).
-	PermitWithoutStream bool // false by default.
-}
diff --git a/vendor/google.golang.org/grpc/metadata/metadata.go b/vendor/google.golang.org/grpc/metadata/metadata.go
deleted file mode 100644
index bd2eaf408..000000000
--- a/vendor/google.golang.org/grpc/metadata/metadata.go
+++ /dev/null
@@ -1,210 +0,0 @@
-/*
- *
- * Copyright 2014 gRPC authors.
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *     http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- *
- */
-
-// Package metadata define the structure of the metadata supported by gRPC library.
-// Please refer to https://github.com/grpc/grpc/blob/master/doc/PROTOCOL-HTTP2.md
-// for more information about custom-metadata.
-package metadata // import "google.golang.org/grpc/metadata"
-
-import (
-	"fmt"
-	"strings"
-
-	"golang.org/x/net/context"
-)
-
-// DecodeKeyValue returns k, v, nil.
-//
-// Deprecated: use k and v directly instead.
-func DecodeKeyValue(k, v string) (string, string, error) {
-	return k, v, nil
-}
-
-// MD is a mapping from metadata keys to values. Users should use the following
-// two convenience functions New and Pairs to generate MD.
-type MD map[string][]string
-
-// New creates an MD from a given key-value map.
-//
-// Only the following ASCII characters are allowed in keys:
-//  - digits: 0-9
-//  - uppercase letters: A-Z (normalized to lower)
-//  - lowercase letters: a-z
-//  - special characters: -_.
-// Uppercase letters are automatically converted to lowercase.
-//
-// Keys beginning with "grpc-" are reserved for grpc-internal use only and may
-// result in errors if set in metadata.
-func New(m map[string]string) MD {
-	md := MD{}
-	for k, val := range m {
-		key := strings.ToLower(k)
-		md[key] = append(md[key], val)
-	}
-	return md
-}
-
-// Pairs returns an MD formed by the mapping of key, value ...
-// Pairs panics if len(kv) is odd.
-//
-// Only the following ASCII characters are allowed in keys:
-//  - digits: 0-9
-//  - uppercase letters: A-Z (normalized to lower)
-//  - lowercase letters: a-z
-//  - special characters: -_.
-// Uppercase letters are automatically converted to lowercase.
-//
-// Keys beginning with "grpc-" are reserved for grpc-internal use only and may
-// result in errors if set in metadata.
-func Pairs(kv ...string) MD {
-	if len(kv)%2 == 1 {
-		panic(fmt.Sprintf("metadata: Pairs got the odd number of input pairs for metadata: %d", len(kv)))
-	}
-	md := MD{}
-	var key string
-	for i, s := range kv {
-		if i%2 == 0 {
-			key = strings.ToLower(s)
-			continue
-		}
-		md[key] = append(md[key], s)
-	}
-	return md
-}
-
-// Len returns the number of items in md.
-func (md MD) Len() int {
-	return len(md)
-}
-
-// Copy returns a copy of md.
-func (md MD) Copy() MD {
-	return Join(md)
-}
-
-// Get obtains the values for a given key.
-func (md MD) Get(k string) []string {
-	k = strings.ToLower(k)
-	return md[k]
-}
-
-// Set sets the value of a given key with a slice of values.
-func (md MD) Set(k string, vals ...string) {
-	if len(vals) == 0 {
-		return
-	}
-	k = strings.ToLower(k)
-	md[k] = vals
-}
-
-// Append adds the values to key k, not overwriting what was already stored at that key.
-func (md MD) Append(k string, vals ...string) {
-	if len(vals) == 0 {
-		return
-	}
-	k = strings.ToLower(k)
-	md[k] = append(md[k], vals...)
-}
-
-// Join joins any number of mds into a single MD.
-// The order of values for each key is determined by the order in which
-// the mds containing those values are presented to Join.
-func Join(mds ...MD) MD {
-	out := MD{}
-	for _, md := range mds {
-		for k, v := range md {
-			out[k] = append(out[k], v...)
-		}
-	}
-	return out
-}
-
-type mdIncomingKey struct{}
-type mdOutgoingKey struct{}
-
-// NewIncomingContext creates a new context with incoming md attached.
-func NewIncomingContext(ctx context.Context, md MD) context.Context {
-	return context.WithValue(ctx, mdIncomingKey{}, md)
-}
-
-// NewOutgoingContext creates a new context with outgoing md attached. If used
-// in conjunction with AppendToOutgoingContext, NewOutgoingContext will
-// overwrite any previously-appended metadata.
-func NewOutgoingContext(ctx context.Context, md MD) context.Context {
-	return context.WithValue(ctx, mdOutgoingKey{}, rawMD{md: md})
-}
-
-// AppendToOutgoingContext returns a new context with the provided kv merged
-// with any existing metadata in the context. Please refer to the
-// documentation of Pairs for a description of kv.
-func AppendToOutgoingContext(ctx context.Context, kv ...string) context.Context {
-	if len(kv)%2 == 1 {
-		panic(fmt.Sprintf("metadata: AppendToOutgoingContext got an odd number of input pairs for metadata: %d", len(kv)))
-	}
-	md, _ := ctx.Value(mdOutgoingKey{}).(rawMD)
-	added := make([][]string, len(md.added)+1)
-	copy(added, md.added)
-	added[len(added)-1] = make([]string, len(kv))
-	copy(added[len(added)-1], kv)
-	return context.WithValue(ctx, mdOutgoingKey{}, rawMD{md: md.md, added: added})
-}
-
-// FromIncomingContext returns the incoming metadata in ctx if it exists.  The
-// returned MD should not be modified. Writing to it may cause races.
-// Modification should be made to copies of the returned MD.
-func FromIncomingContext(ctx context.Context) (md MD, ok bool) {
-	md, ok = ctx.Value(mdIncomingKey{}).(MD)
-	return
-}
-
-// FromOutgoingContextRaw returns the un-merged, intermediary contents
-// of rawMD. Remember to perform strings.ToLower on the keys. The returned
-// MD should not be modified. Writing to it may cause races. Modification
-// should be made to copies of the returned MD.
-//
-// This is intended for gRPC-internal use ONLY.
-func FromOutgoingContextRaw(ctx context.Context) (MD, [][]string, bool) {
-	raw, ok := ctx.Value(mdOutgoingKey{}).(rawMD)
-	if !ok {
-		return nil, nil, false
-	}
-
-	return raw.md, raw.added, true
-}
-
-// FromOutgoingContext returns the outgoing metadata in ctx if it exists.  The
-// returned MD should not be modified. Writing to it may cause races.
-// Modification should be made to copies of the returned MD.
-func FromOutgoingContext(ctx context.Context) (MD, bool) {
-	raw, ok := ctx.Value(mdOutgoingKey{}).(rawMD)
-	if !ok {
-		return nil, false
-	}
-
-	mds := make([]MD, 0, len(raw.added)+1)
-	mds = append(mds, raw.md)
-	for _, vv := range raw.added {
-		mds = append(mds, Pairs(vv...))
-	}
-	return Join(mds...), ok
-}
-
-type rawMD struct {
-	md    MD
-	added [][]string
-}
diff --git a/vendor/google.golang.org/grpc/naming/dns_resolver.go b/vendor/google.golang.org/grpc/naming/dns_resolver.go
deleted file mode 100644
index 0f8a908ea..000000000
--- a/vendor/google.golang.org/grpc/naming/dns_resolver.go
+++ /dev/null
@@ -1,290 +0,0 @@
-/*
- *
- * Copyright 2017 gRPC authors.
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *     http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- *
- */
-
-package naming
-
-import (
-	"errors"
-	"fmt"
-	"net"
-	"strconv"
-	"time"
-
-	"golang.org/x/net/context"
-	"google.golang.org/grpc/grpclog"
-)
-
-const (
-	defaultPort = "443"
-	defaultFreq = time.Minute * 30
-)
-
-var (
-	errMissingAddr  = errors.New("missing address")
-	errWatcherClose = errors.New("watcher has been closed")
-)
-
-// NewDNSResolverWithFreq creates a DNS Resolver that can resolve DNS names, and
-// create watchers that poll the DNS server using the frequency set by freq.
-func NewDNSResolverWithFreq(freq time.Duration) (Resolver, error) {
-	return &dnsResolver{freq: freq}, nil
-}
-
-// NewDNSResolver creates a DNS Resolver that can resolve DNS names, and create
-// watchers that poll the DNS server using the default frequency defined by defaultFreq.
-func NewDNSResolver() (Resolver, error) {
-	return NewDNSResolverWithFreq(defaultFreq)
-}
-
-// dnsResolver handles name resolution for names following the DNS scheme
-type dnsResolver struct {
-	// frequency of polling the DNS server that the watchers created by this resolver will use.
-	freq time.Duration
-}
-
-// formatIP returns ok = false if addr is not a valid textual representation of an IP address.
-// If addr is an IPv4 address, return the addr and ok = true.
-// If addr is an IPv6 address, return the addr enclosed in square brackets and ok = true.
-func formatIP(addr string) (addrIP string, ok bool) {
-	ip := net.ParseIP(addr)
-	if ip == nil {
-		return "", false
-	}
-	if ip.To4() != nil {
-		return addr, true
-	}
-	return "[" + addr + "]", true
-}
-
-// parseTarget takes the user input target string, returns formatted host and port info.
-// If target doesn't specify a port, set the port to be the defaultPort.
-// If target is in IPv6 format and host-name is enclosed in sqarue brackets, brackets
-// are strippd when setting the host.
-// examples:
-// target: "www.google.com" returns host: "www.google.com", port: "443"
-// target: "ipv4-host:80" returns host: "ipv4-host", port: "80"
-// target: "[ipv6-host]" returns host: "ipv6-host", port: "443"
-// target: ":80" returns host: "localhost", port: "80"
-// target: ":" returns host: "localhost", port: "443"
-func parseTarget(target string) (host, port string, err error) {
-	if target == "" {
-		return "", "", errMissingAddr
-	}
-
-	if ip := net.ParseIP(target); ip != nil {
-		// target is an IPv4 or IPv6(without brackets) address
-		return target, defaultPort, nil
-	}
-	if host, port, err := net.SplitHostPort(target); err == nil {
-		// target has port, i.e ipv4-host:port, [ipv6-host]:port, host-name:port
-		if host == "" {
-			// Keep consistent with net.Dial(): If the host is empty, as in ":80", the local system is assumed.
-			host = "localhost"
-		}
-		if port == "" {
-			// If the port field is empty(target ends with colon), e.g. "[::1]:", defaultPort is used.
-			port = defaultPort
-		}
-		return host, port, nil
-	}
-	if host, port, err := net.SplitHostPort(target + ":" + defaultPort); err == nil {
-		// target doesn't have port
-		return host, port, nil
-	}
-	return "", "", fmt.Errorf("invalid target address %v", target)
-}
-
-// Resolve creates a watcher that watches the name resolution of the target.
-func (r *dnsResolver) Resolve(target string) (Watcher, error) {
-	host, port, err := parseTarget(target)
-	if err != nil {
-		return nil, err
-	}
-
-	if net.ParseIP(host) != nil {
-		ipWatcher := &ipWatcher{
-			updateChan: make(chan *Update, 1),
-		}
-		host, _ = formatIP(host)
-		ipWatcher.updateChan <- &Update{Op: Add, Addr: host + ":" + port}
-		return ipWatcher, nil
-	}
-
-	ctx, cancel := context.WithCancel(context.Background())
-	return &dnsWatcher{
-		r:      r,
-		host:   host,
-		port:   port,
-		ctx:    ctx,
-		cancel: cancel,
-		t:      time.NewTimer(0),
-	}, nil
-}
-
-// dnsWatcher watches for the name resolution update for a specific target
-type dnsWatcher struct {
-	r    *dnsResolver
-	host string
-	port string
-	// The latest resolved address set
-	curAddrs map[string]*Update
-	ctx      context.Context
-	cancel   context.CancelFunc
-	t        *time.Timer
-}
-
-// ipWatcher watches for the name resolution update for an IP address.
-type ipWatcher struct {
-	updateChan chan *Update
-}
-
-// Next returns the address resolution Update for the target. For IP address,
-// the resolution is itself, thus polling name server is unnecessary. Therefore,
-// Next() will return an Update the first time it is called, and will be blocked
-// for all following calls as no Update exists until watcher is closed.
-func (i *ipWatcher) Next() ([]*Update, error) {
-	u, ok := <-i.updateChan
-	if !ok {
-		return nil, errWatcherClose
-	}
-	return []*Update{u}, nil
-}
-
-// Close closes the ipWatcher.
-func (i *ipWatcher) Close() {
-	close(i.updateChan)
-}
-
-// AddressType indicates the address type returned by name resolution.
-type AddressType uint8
-
-const (
-	// Backend indicates the server is a backend server.
-	Backend AddressType = iota
-	// GRPCLB indicates the server is a grpclb load balancer.
-	GRPCLB
-)
-
-// AddrMetadataGRPCLB contains the information the name resolver for grpclb should provide. The
-// name resolver used by the grpclb balancer is required to provide this type of metadata in
-// its address updates.
-type AddrMetadataGRPCLB struct {
-	// AddrType is the type of server (grpc load balancer or backend).
-	AddrType AddressType
-	// ServerName is the name of the grpc load balancer. Used for authentication.
-	ServerName string
-}
-
-// compileUpdate compares the old resolved addresses and newly resolved addresses,
-// and generates an update list
-func (w *dnsWatcher) compileUpdate(newAddrs map[string]*Update) []*Update {
-	var res []*Update
-	for a, u := range w.curAddrs {
-		if _, ok := newAddrs[a]; !ok {
-			u.Op = Delete
-			res = append(res, u)
-		}
-	}
-	for a, u := range newAddrs {
-		if _, ok := w.curAddrs[a]; !ok {
-			res = append(res, u)
-		}
-	}
-	return res
-}
-
-func (w *dnsWatcher) lookupSRV() map[string]*Update {
-	newAddrs := make(map[string]*Update)
-	_, srvs, err := lookupSRV(w.ctx, "grpclb", "tcp", w.host)
-	if err != nil {
-		grpclog.Infof("grpc: failed dns SRV record lookup due to %v.\n", err)
-		return nil
-	}
-	for _, s := range srvs {
-		lbAddrs, err := lookupHost(w.ctx, s.Target)
-		if err != nil {
-			grpclog.Warningf("grpc: failed load banlacer address dns lookup due to %v.\n", err)
-			continue
-		}
-		for _, a := range lbAddrs {
-			a, ok := formatIP(a)
-			if !ok {
-				grpclog.Errorf("grpc: failed IP parsing due to %v.\n", err)
-				continue
-			}
-			addr := a + ":" + strconv.Itoa(int(s.Port))
-			newAddrs[addr] = &Update{Addr: addr,
-				Metadata: AddrMetadataGRPCLB{AddrType: GRPCLB, ServerName: s.Target}}
-		}
-	}
-	return newAddrs
-}
-
-func (w *dnsWatcher) lookupHost() map[string]*Update {
-	newAddrs := make(map[string]*Update)
-	addrs, err := lookupHost(w.ctx, w.host)
-	if err != nil {
-		grpclog.Warningf("grpc: failed dns A record lookup due to %v.\n", err)
-		return nil
-	}
-	for _, a := range addrs {
-		a, ok := formatIP(a)
-		if !ok {
-			grpclog.Errorf("grpc: failed IP parsing due to %v.\n", err)
-			continue
-		}
-		addr := a + ":" + w.port
-		newAddrs[addr] = &Update{Addr: addr}
-	}
-	return newAddrs
-}
-
-func (w *dnsWatcher) lookup() []*Update {
-	newAddrs := w.lookupSRV()
-	if newAddrs == nil {
-		// If failed to get any balancer address (either no corresponding SRV for the
-		// target, or caused by failure during resolution/parsing of the balancer target),
-		// return any A record info available.
-		newAddrs = w.lookupHost()
-	}
-	result := w.compileUpdate(newAddrs)
-	w.curAddrs = newAddrs
-	return result
-}
-
-// Next returns the resolved address update(delta) for the target. If there's no
-// change, it will sleep for 30 mins and try to resolve again after that.
-func (w *dnsWatcher) Next() ([]*Update, error) {
-	for {
-		select {
-		case <-w.ctx.Done():
-			return nil, errWatcherClose
-		case <-w.t.C:
-		}
-		result := w.lookup()
-		// Next lookup should happen after an interval defined by w.r.freq.
-		w.t.Reset(w.r.freq)
-		if len(result) > 0 {
-			return result, nil
-		}
-	}
-}
-
-func (w *dnsWatcher) Close() {
-	w.cancel()
-}
diff --git a/vendor/google.golang.org/grpc/naming/go17.go b/vendor/google.golang.org/grpc/naming/go17.go
deleted file mode 100644
index 57b65d7b8..000000000
--- a/vendor/google.golang.org/grpc/naming/go17.go
+++ /dev/null
@@ -1,34 +0,0 @@
-// +build go1.6,!go1.8
-
-/*
- *
- * Copyright 2017 gRPC authors.
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *     http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- *
- */
-
-package naming
-
-import (
-	"net"
-
-	"golang.org/x/net/context"
-)
-
-var (
-	lookupHost = func(ctx context.Context, host string) ([]string, error) { return net.LookupHost(host) }
-	lookupSRV  = func(ctx context.Context, service, proto, name string) (string, []*net.SRV, error) {
-		return net.LookupSRV(service, proto, name)
-	}
-)
diff --git a/vendor/google.golang.org/grpc/naming/go18.go b/vendor/google.golang.org/grpc/naming/go18.go
deleted file mode 100644
index b5a0f8427..000000000
--- a/vendor/google.golang.org/grpc/naming/go18.go
+++ /dev/null
@@ -1,28 +0,0 @@
-// +build go1.8
-
-/*
- *
- * Copyright 2017 gRPC authors.
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *     http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- *
- */
-
-package naming
-
-import "net"
-
-var (
-	lookupHost = net.DefaultResolver.LookupHost
-	lookupSRV  = net.DefaultResolver.LookupSRV
-)
diff --git a/vendor/google.golang.org/grpc/naming/naming.go b/vendor/google.golang.org/grpc/naming/naming.go
deleted file mode 100644
index 8cc39e937..000000000
--- a/vendor/google.golang.org/grpc/naming/naming.go
+++ /dev/null
@@ -1,69 +0,0 @@
-/*
- *
- * Copyright 2014 gRPC authors.
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *     http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- *
- */
-
-// Package naming defines the naming API and related data structures for gRPC.
-// The interface is EXPERIMENTAL and may be suject to change.
-//
-// Deprecated: please use package resolver.
-package naming
-
-// Operation defines the corresponding operations for a name resolution change.
-//
-// Deprecated: please use package resolver.
-type Operation uint8
-
-const (
-	// Add indicates a new address is added.
-	Add Operation = iota
-	// Delete indicates an existing address is deleted.
-	Delete
-)
-
-// Update defines a name resolution update. Notice that it is not valid having both
-// empty string Addr and nil Metadata in an Update.
-//
-// Deprecated: please use package resolver.
-type Update struct {
-	// Op indicates the operation of the update.
-	Op Operation
-	// Addr is the updated address. It is empty string if there is no address update.
-	Addr string
-	// Metadata is the updated metadata. It is nil if there is no metadata update.
-	// Metadata is not required for a custom naming implementation.
-	Metadata interface{}
-}
-
-// Resolver creates a Watcher for a target to track its resolution changes.
-//
-// Deprecated: please use package resolver.
-type Resolver interface {
-	// Resolve creates a Watcher for target.
-	Resolve(target string) (Watcher, error)
-}
-
-// Watcher watches for the updates on the specified target.
-//
-// Deprecated: please use package resolver.
-type Watcher interface {
-	// Next blocks until an update or error happens. It may return one or more
-	// updates. The first call should get the full set of the results. It should
-	// return an error if and only if Watcher cannot recover.
-	Next() ([]*Update, error)
-	// Close closes the Watcher.
-	Close()
-}
diff --git a/vendor/google.golang.org/grpc/peer/peer.go b/vendor/google.golang.org/grpc/peer/peer.go
deleted file mode 100644
index 317b8b9d0..000000000
--- a/vendor/google.golang.org/grpc/peer/peer.go
+++ /dev/null
@@ -1,51 +0,0 @@
-/*
- *
- * Copyright 2014 gRPC authors.
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *     http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- *
- */
-
-// Package peer defines various peer information associated with RPCs and
-// corresponding utils.
-package peer
-
-import (
-	"net"
-
-	"golang.org/x/net/context"
-	"google.golang.org/grpc/credentials"
-)
-
-// Peer contains the information of the peer for an RPC, such as the address
-// and authentication information.
-type Peer struct {
-	// Addr is the peer address.
-	Addr net.Addr
-	// AuthInfo is the authentication information of the transport.
-	// It is nil if there is no transport security being used.
-	AuthInfo credentials.AuthInfo
-}
-
-type peerKey struct{}
-
-// NewContext creates a new context with peer information attached.
-func NewContext(ctx context.Context, p *Peer) context.Context {
-	return context.WithValue(ctx, peerKey{}, p)
-}
-
-// FromContext returns the peer information in ctx if it exists.
-func FromContext(ctx context.Context) (p *Peer, ok bool) {
-	p, ok = ctx.Value(peerKey{}).(*Peer)
-	return
-}
diff --git a/vendor/google.golang.org/grpc/picker_wrapper.go b/vendor/google.golang.org/grpc/picker_wrapper.go
deleted file mode 100644
index 019e65800..000000000
--- a/vendor/google.golang.org/grpc/picker_wrapper.go
+++ /dev/null
@@ -1,336 +0,0 @@
-/*
- *
- * Copyright 2017 gRPC authors.
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *     http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- *
- */
-
-package grpc
-
-import (
-	"io"
-	"sync"
-	"sync/atomic"
-
-	"golang.org/x/net/context"
-	"google.golang.org/grpc/balancer"
-	"google.golang.org/grpc/codes"
-	"google.golang.org/grpc/grpclog"
-	"google.golang.org/grpc/internal/channelz"
-	"google.golang.org/grpc/metadata"
-	"google.golang.org/grpc/resolver"
-	"google.golang.org/grpc/status"
-	"google.golang.org/grpc/transport"
-)
-
-// pickerWrapper is a wrapper of balancer.Picker. It blocks on certain pick
-// actions and unblock when there's a picker update.
-type pickerWrapper struct {
-	mu         sync.Mutex
-	done       bool
-	blockingCh chan struct{}
-	picker     balancer.Picker
-
-	// The latest connection happened.
-	connErrMu sync.Mutex
-	connErr   error
-
-	stickinessMDKey atomic.Value
-	stickiness      *stickyStore
-}
-
-func newPickerWrapper() *pickerWrapper {
-	bp := &pickerWrapper{
-		blockingCh: make(chan struct{}),
-		stickiness: newStickyStore(),
-	}
-	return bp
-}
-
-func (bp *pickerWrapper) updateConnectionError(err error) {
-	bp.connErrMu.Lock()
-	bp.connErr = err
-	bp.connErrMu.Unlock()
-}
-
-func (bp *pickerWrapper) connectionError() error {
-	bp.connErrMu.Lock()
-	err := bp.connErr
-	bp.connErrMu.Unlock()
-	return err
-}
-
-func (bp *pickerWrapper) updateStickinessMDKey(newKey string) {
-	// No need to check ok because mdKey == "" if ok == false.
-	if oldKey, _ := bp.stickinessMDKey.Load().(string); oldKey != newKey {
-		bp.stickinessMDKey.Store(newKey)
-		bp.stickiness.reset(newKey)
-	}
-}
-
-func (bp *pickerWrapper) getStickinessMDKey() string {
-	// No need to check ok because mdKey == "" if ok == false.
-	mdKey, _ := bp.stickinessMDKey.Load().(string)
-	return mdKey
-}
-
-func (bp *pickerWrapper) clearStickinessState() {
-	if oldKey := bp.getStickinessMDKey(); oldKey != "" {
-		// There's no need to reset store if mdKey was "".
-		bp.stickiness.reset(oldKey)
-	}
-}
-
-// updatePicker is called by UpdateBalancerState. It unblocks all blocked pick.
-func (bp *pickerWrapper) updatePicker(p balancer.Picker) {
-	bp.mu.Lock()
-	if bp.done {
-		bp.mu.Unlock()
-		return
-	}
-	bp.picker = p
-	// bp.blockingCh should never be nil.
-	close(bp.blockingCh)
-	bp.blockingCh = make(chan struct{})
-	bp.mu.Unlock()
-}
-
-func doneChannelzWrapper(acw *acBalancerWrapper, done func(balancer.DoneInfo)) func(balancer.DoneInfo) {
-	acw.mu.Lock()
-	ac := acw.ac
-	acw.mu.Unlock()
-	ac.incrCallsStarted()
-	return func(b balancer.DoneInfo) {
-		if b.Err != nil && b.Err != io.EOF {
-			ac.incrCallsFailed()
-		} else {
-			ac.incrCallsSucceeded()
-		}
-		if done != nil {
-			done(b)
-		}
-	}
-}
-
-// pick returns the transport that will be used for the RPC.
-// It may block in the following cases:
-// - there's no picker
-// - the current picker returns ErrNoSubConnAvailable
-// - the current picker returns other errors and failfast is false.
-// - the subConn returned by the current picker is not READY
-// When one of these situations happens, pick blocks until the picker gets updated.
-func (bp *pickerWrapper) pick(ctx context.Context, failfast bool, opts balancer.PickOptions) (transport.ClientTransport, func(balancer.DoneInfo), error) {
-
-	mdKey := bp.getStickinessMDKey()
-	stickyKey, isSticky := stickyKeyFromContext(ctx, mdKey)
-
-	// Potential race here: if stickinessMDKey is updated after the above two
-	// lines, and this pick is a sticky pick, the following put could add an
-	// entry to sticky store with an outdated sticky key.
-	//
-	// The solution: keep the current md key in sticky store, and at the
-	// beginning of each get/put, check the mdkey against store.curMDKey.
-	//  - Cons: one more string comparing for each get/put.
-	//  - Pros: the string matching happens inside get/put, so the overhead for
-	//  non-sticky RPCs will be minimal.
-
-	if isSticky {
-		if t, ok := bp.stickiness.get(mdKey, stickyKey); ok {
-			// Done function returned is always nil.
-			return t, nil, nil
-		}
-	}
-
-	var (
-		p  balancer.Picker
-		ch chan struct{}
-	)
-
-	for {
-		bp.mu.Lock()
-		if bp.done {
-			bp.mu.Unlock()
-			return nil, nil, ErrClientConnClosing
-		}
-
-		if bp.picker == nil {
-			ch = bp.blockingCh
-		}
-		if ch == bp.blockingCh {
-			// This could happen when either:
-			// - bp.picker is nil (the previous if condition), or
-			// - has called pick on the current picker.
-			bp.mu.Unlock()
-			select {
-			case <-ctx.Done():
-				return nil, nil, ctx.Err()
-			case <-ch:
-			}
-			continue
-		}
-
-		ch = bp.blockingCh
-		p = bp.picker
-		bp.mu.Unlock()
-
-		subConn, done, err := p.Pick(ctx, opts)
-
-		if err != nil {
-			switch err {
-			case balancer.ErrNoSubConnAvailable:
-				continue
-			case balancer.ErrTransientFailure:
-				if !failfast {
-					continue
-				}
-				return nil, nil, status.Errorf(codes.Unavailable, "%v, latest connection error: %v", err, bp.connectionError())
-			default:
-				// err is some other error.
-				return nil, nil, toRPCErr(err)
-			}
-		}
-
-		acw, ok := subConn.(*acBalancerWrapper)
-		if !ok {
-			grpclog.Infof("subconn returned from pick is not *acBalancerWrapper")
-			continue
-		}
-		if t, ok := acw.getAddrConn().getReadyTransport(); ok {
-			if isSticky {
-				bp.stickiness.put(mdKey, stickyKey, acw)
-			}
-			if channelz.IsOn() {
-				return t, doneChannelzWrapper(acw, done), nil
-			}
-			return t, done, nil
-		}
-		grpclog.Infof("blockingPicker: the picked transport is not ready, loop back to repick")
-		// If ok == false, ac.state is not READY.
-		// A valid picker always returns READY subConn. This means the state of ac
-		// just changed, and picker will be updated shortly.
-		// continue back to the beginning of the for loop to repick.
-	}
-}
-
-func (bp *pickerWrapper) close() {
-	bp.mu.Lock()
-	defer bp.mu.Unlock()
-	if bp.done {
-		return
-	}
-	bp.done = true
-	close(bp.blockingCh)
-}
-
-const stickinessKeyCountLimit = 1000
-
-type stickyStoreEntry struct {
-	acw  *acBalancerWrapper
-	addr resolver.Address
-}
-
-type stickyStore struct {
-	mu sync.Mutex
-	// curMDKey is check before every get/put to avoid races. The operation will
-	// abort immediately when the given mdKey is different from the curMDKey.
-	curMDKey string
-	store    *linkedMap
-}
-
-func newStickyStore() *stickyStore {
-	return &stickyStore{
-		store: newLinkedMap(),
-	}
-}
-
-// reset clears the map in stickyStore, and set the currentMDKey to newMDKey.
-func (ss *stickyStore) reset(newMDKey string) {
-	ss.mu.Lock()
-	ss.curMDKey = newMDKey
-	ss.store.clear()
-	ss.mu.Unlock()
-}
-
-// stickyKey is the key to look up in store. mdKey will be checked against
-// curMDKey to avoid races.
-func (ss *stickyStore) put(mdKey, stickyKey string, acw *acBalancerWrapper) {
-	ss.mu.Lock()
-	defer ss.mu.Unlock()
-	if mdKey != ss.curMDKey {
-		return
-	}
-	// TODO(stickiness): limit the total number of entries.
-	ss.store.put(stickyKey, &stickyStoreEntry{
-		acw:  acw,
-		addr: acw.getAddrConn().getCurAddr(),
-	})
-	if ss.store.len() > stickinessKeyCountLimit {
-		ss.store.removeOldest()
-	}
-}
-
-// stickyKey is the key to look up in store. mdKey will be checked against
-// curMDKey to avoid races.
-func (ss *stickyStore) get(mdKey, stickyKey string) (transport.ClientTransport, bool) {
-	ss.mu.Lock()
-	defer ss.mu.Unlock()
-	if mdKey != ss.curMDKey {
-		return nil, false
-	}
-	entry, ok := ss.store.get(stickyKey)
-	if !ok {
-		return nil, false
-	}
-	ac := entry.acw.getAddrConn()
-	if ac.getCurAddr() != entry.addr {
-		ss.store.remove(stickyKey)
-		return nil, false
-	}
-	t, ok := ac.getReadyTransport()
-	if !ok {
-		ss.store.remove(stickyKey)
-		return nil, false
-	}
-	return t, true
-}
-
-// Get one value from metadata in ctx with key stickinessMDKey.
-//
-// It returns "", false if stickinessMDKey is an empty string.
-func stickyKeyFromContext(ctx context.Context, stickinessMDKey string) (string, bool) {
-	if stickinessMDKey == "" {
-		return "", false
-	}
-
-	md, added, ok := metadata.FromOutgoingContextRaw(ctx)
-	if !ok {
-		return "", false
-	}
-
-	if vv, ok := md[stickinessMDKey]; ok {
-		if len(vv) > 0 {
-			return vv[0], true
-		}
-	}
-
-	for _, ss := range added {
-		for i := 0; i < len(ss)-1; i += 2 {
-			if ss[i] == stickinessMDKey {
-				return ss[i+1], true
-			}
-		}
-	}
-
-	return "", false
-}
diff --git a/vendor/google.golang.org/grpc/pickfirst.go b/vendor/google.golang.org/grpc/pickfirst.go
deleted file mode 100644
index bf659d49d..000000000
--- a/vendor/google.golang.org/grpc/pickfirst.go
+++ /dev/null
@@ -1,108 +0,0 @@
-/*
- *
- * Copyright 2017 gRPC authors.
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *     http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- *
- */
-
-package grpc
-
-import (
-	"golang.org/x/net/context"
-	"google.golang.org/grpc/balancer"
-	"google.golang.org/grpc/connectivity"
-	"google.golang.org/grpc/grpclog"
-	"google.golang.org/grpc/resolver"
-)
-
-// PickFirstBalancerName is the name of the pick_first balancer.
-const PickFirstBalancerName = "pick_first"
-
-func newPickfirstBuilder() balancer.Builder {
-	return &pickfirstBuilder{}
-}
-
-type pickfirstBuilder struct{}
-
-func (*pickfirstBuilder) Build(cc balancer.ClientConn, opt balancer.BuildOptions) balancer.Balancer {
-	return &pickfirstBalancer{cc: cc}
-}
-
-func (*pickfirstBuilder) Name() string {
-	return PickFirstBalancerName
-}
-
-type pickfirstBalancer struct {
-	cc balancer.ClientConn
-	sc balancer.SubConn
-}
-
-func (b *pickfirstBalancer) HandleResolvedAddrs(addrs []resolver.Address, err error) {
-	if err != nil {
-		grpclog.Infof("pickfirstBalancer: HandleResolvedAddrs called with error %v", err)
-		return
-	}
-	if b.sc == nil {
-		b.sc, err = b.cc.NewSubConn(addrs, balancer.NewSubConnOptions{})
-		if err != nil {
-			grpclog.Errorf("pickfirstBalancer: failed to NewSubConn: %v", err)
-			return
-		}
-		b.cc.UpdateBalancerState(connectivity.Idle, &picker{sc: b.sc})
-		b.sc.Connect()
-	} else {
-		b.sc.UpdateAddresses(addrs)
-		b.sc.Connect()
-	}
-}
-
-func (b *pickfirstBalancer) HandleSubConnStateChange(sc balancer.SubConn, s connectivity.State) {
-	grpclog.Infof("pickfirstBalancer: HandleSubConnStateChange: %p, %v", sc, s)
-	if b.sc != sc {
-		grpclog.Infof("pickfirstBalancer: ignored state change because sc is not recognized")
-		return
-	}
-	if s == connectivity.Shutdown {
-		b.sc = nil
-		return
-	}
-
-	switch s {
-	case connectivity.Ready, connectivity.Idle:
-		b.cc.UpdateBalancerState(s, &picker{sc: sc})
-	case connectivity.Connecting:
-		b.cc.UpdateBalancerState(s, &picker{err: balancer.ErrNoSubConnAvailable})
-	case connectivity.TransientFailure:
-		b.cc.UpdateBalancerState(s, &picker{err: balancer.ErrTransientFailure})
-	}
-}
-
-func (b *pickfirstBalancer) Close() {
-}
-
-type picker struct {
-	err error
-	sc  balancer.SubConn
-}
-
-func (p *picker) Pick(ctx context.Context, opts balancer.PickOptions) (balancer.SubConn, func(balancer.DoneInfo), error) {
-	if p.err != nil {
-		return nil, nil, p.err
-	}
-	return p.sc, nil, nil
-}
-
-func init() {
-	balancer.Register(newPickfirstBuilder())
-}
diff --git a/vendor/google.golang.org/grpc/proxy.go b/vendor/google.golang.org/grpc/proxy.go
deleted file mode 100644
index 2d40236e2..000000000
--- a/vendor/google.golang.org/grpc/proxy.go
+++ /dev/null
@@ -1,130 +0,0 @@
-/*
- *
- * Copyright 2017 gRPC authors.
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *     http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- *
- */
-
-package grpc
-
-import (
-	"bufio"
-	"errors"
-	"fmt"
-	"io"
-	"net"
-	"net/http"
-	"net/http/httputil"
-	"net/url"
-
-	"golang.org/x/net/context"
-)
-
-var (
-	// errDisabled indicates that proxy is disabled for the address.
-	errDisabled = errors.New("proxy is disabled for the address")
-	// The following variable will be overwritten in the tests.
-	httpProxyFromEnvironment = http.ProxyFromEnvironment
-)
-
-func mapAddress(ctx context.Context, address string) (string, error) {
-	req := &http.Request{
-		URL: &url.URL{
-			Scheme: "https",
-			Host:   address,
-		},
-	}
-	url, err := httpProxyFromEnvironment(req)
-	if err != nil {
-		return "", err
-	}
-	if url == nil {
-		return "", errDisabled
-	}
-	return url.Host, nil
-}
-
-// To read a response from a net.Conn, http.ReadResponse() takes a bufio.Reader.
-// It's possible that this reader reads more than what's need for the response and stores
-// those bytes in the buffer.
-// bufConn wraps the original net.Conn and the bufio.Reader to make sure we don't lose the
-// bytes in the buffer.
-type bufConn struct {
-	net.Conn
-	r io.Reader
-}
-
-func (c *bufConn) Read(b []byte) (int, error) {
-	return c.r.Read(b)
-}
-
-func doHTTPConnectHandshake(ctx context.Context, conn net.Conn, addr string) (_ net.Conn, err error) {
-	defer func() {
-		if err != nil {
-			conn.Close()
-		}
-	}()
-
-	req := (&http.Request{
-		Method: http.MethodConnect,
-		URL:    &url.URL{Host: addr},
-		Header: map[string][]string{"User-Agent": {grpcUA}},
-	})
-
-	if err := sendHTTPRequest(ctx, req, conn); err != nil {
-		return nil, fmt.Errorf("failed to write the HTTP request: %v", err)
-	}
-
-	r := bufio.NewReader(conn)
-	resp, err := http.ReadResponse(r, req)
-	if err != nil {
-		return nil, fmt.Errorf("reading server HTTP response: %v", err)
-	}
-	defer resp.Body.Close()
-	if resp.StatusCode != http.StatusOK {
-		dump, err := httputil.DumpResponse(resp, true)
-		if err != nil {
-			return nil, fmt.Errorf("failed to do connect handshake, status code: %s", resp.Status)
-		}
-		return nil, fmt.Errorf("failed to do connect handshake, response: %q", dump)
-	}
-
-	return &bufConn{Conn: conn, r: r}, nil
-}
-
-// newProxyDialer returns a dialer that connects to proxy first if necessary.
-// The returned dialer checks if a proxy is necessary, dial to the proxy with the
-// provided dialer, does HTTP CONNECT handshake and returns the connection.
-func newProxyDialer(dialer func(context.Context, string) (net.Conn, error)) func(context.Context, string) (net.Conn, error) {
-	return func(ctx context.Context, addr string) (conn net.Conn, err error) {
-		var skipHandshake bool
-		newAddr, err := mapAddress(ctx, addr)
-		if err != nil {
-			if err != errDisabled {
-				return nil, err
-			}
-			skipHandshake = true
-			newAddr = addr
-		}
-
-		conn, err = dialer(ctx, newAddr)
-		if err != nil {
-			return
-		}
-		if !skipHandshake {
-			conn, err = doHTTPConnectHandshake(ctx, conn, addr)
-		}
-		return
-	}
-}
diff --git a/vendor/google.golang.org/grpc/resolver/dns/dns_resolver.go b/vendor/google.golang.org/grpc/resolver/dns/dns_resolver.go
deleted file mode 100644
index 048fde67d..000000000
--- a/vendor/google.golang.org/grpc/resolver/dns/dns_resolver.go
+++ /dev/null
@@ -1,381 +0,0 @@
-/*
- *
- * Copyright 2017 gRPC authors.
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *     http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- *
- */
-
-// Package dns implements a dns resolver to be installed as the default resolver
-// in grpc.
-package dns
-
-import (
-	"encoding/json"
-	"errors"
-	"fmt"
-	"net"
-	"os"
-	"strconv"
-	"strings"
-	"sync"
-	"time"
-
-	"golang.org/x/net/context"
-	"google.golang.org/grpc/grpclog"
-	"google.golang.org/grpc/internal/grpcrand"
-	"google.golang.org/grpc/resolver"
-)
-
-func init() {
-	resolver.Register(NewBuilder())
-}
-
-const (
-	defaultPort = "443"
-	defaultFreq = time.Minute * 30
-	golang      = "GO"
-	// In DNS, service config is encoded in a TXT record via the mechanism
-	// described in RFC-1464 using the attribute name grpc_config.
-	txtAttribute = "grpc_config="
-)
-
-var (
-	errMissingAddr = errors.New("missing address")
-)
-
-// NewBuilder creates a dnsBuilder which is used to factory DNS resolvers.
-func NewBuilder() resolver.Builder {
-	return &dnsBuilder{freq: defaultFreq}
-}
-
-type dnsBuilder struct {
-	// frequency of polling the DNS server.
-	freq time.Duration
-}
-
-// Build creates and starts a DNS resolver that watches the name resolution of the target.
-func (b *dnsBuilder) Build(target resolver.Target, cc resolver.ClientConn, opts resolver.BuildOption) (resolver.Resolver, error) {
-	if target.Authority != "" {
-		return nil, fmt.Errorf("Default DNS resolver does not support custom DNS server")
-	}
-	host, port, err := parseTarget(target.Endpoint)
-	if err != nil {
-		return nil, err
-	}
-
-	// IP address.
-	if net.ParseIP(host) != nil {
-		host, _ = formatIP(host)
-		addr := []resolver.Address{{Addr: host + ":" + port}}
-		i := &ipResolver{
-			cc: cc,
-			ip: addr,
-			rn: make(chan struct{}, 1),
-			q:  make(chan struct{}),
-		}
-		cc.NewAddress(addr)
-		go i.watcher()
-		return i, nil
-	}
-
-	// DNS address (non-IP).
-	ctx, cancel := context.WithCancel(context.Background())
-	d := &dnsResolver{
-		freq:                 b.freq,
-		host:                 host,
-		port:                 port,
-		ctx:                  ctx,
-		cancel:               cancel,
-		cc:                   cc,
-		t:                    time.NewTimer(0),
-		rn:                   make(chan struct{}, 1),
-		disableServiceConfig: opts.DisableServiceConfig,
-	}
-
-	d.wg.Add(1)
-	go d.watcher()
-	return d, nil
-}
-
-// Scheme returns the naming scheme of this resolver builder, which is "dns".
-func (b *dnsBuilder) Scheme() string {
-	return "dns"
-}
-
-// ipResolver watches for the name resolution update for an IP address.
-type ipResolver struct {
-	cc resolver.ClientConn
-	ip []resolver.Address
-	// rn channel is used by ResolveNow() to force an immediate resolution of the target.
-	rn chan struct{}
-	q  chan struct{}
-}
-
-// ResolveNow resend the address it stores, no resolution is needed.
-func (i *ipResolver) ResolveNow(opt resolver.ResolveNowOption) {
-	select {
-	case i.rn <- struct{}{}:
-	default:
-	}
-}
-
-// Close closes the ipResolver.
-func (i *ipResolver) Close() {
-	close(i.q)
-}
-
-func (i *ipResolver) watcher() {
-	for {
-		select {
-		case <-i.rn:
-			i.cc.NewAddress(i.ip)
-		case <-i.q:
-			return
-		}
-	}
-}
-
-// dnsResolver watches for the name resolution update for a non-IP target.
-type dnsResolver struct {
-	freq   time.Duration
-	host   string
-	port   string
-	ctx    context.Context
-	cancel context.CancelFunc
-	cc     resolver.ClientConn
-	// rn channel is used by ResolveNow() to force an immediate resolution of the target.
-	rn chan struct{}
-	t  *time.Timer
-	// wg is used to enforce Close() to return after the watcher() goroutine has finished.
-	// Otherwise, data race will be possible. [Race Example] in dns_resolver_test we
-	// replace the real lookup functions with mocked ones to facilitate testing.
-	// If Close() doesn't wait for watcher() goroutine finishes, race detector sometimes
-	// will warns lookup (READ the lookup function pointers) inside watcher() goroutine
-	// has data race with replaceNetFunc (WRITE the lookup function pointers).
-	wg                   sync.WaitGroup
-	disableServiceConfig bool
-}
-
-// ResolveNow invoke an immediate resolution of the target that this dnsResolver watches.
-func (d *dnsResolver) ResolveNow(opt resolver.ResolveNowOption) {
-	select {
-	case d.rn <- struct{}{}:
-	default:
-	}
-}
-
-// Close closes the dnsResolver.
-func (d *dnsResolver) Close() {
-	d.cancel()
-	d.wg.Wait()
-	d.t.Stop()
-}
-
-func (d *dnsResolver) watcher() {
-	defer d.wg.Done()
-	for {
-		select {
-		case <-d.ctx.Done():
-			return
-		case <-d.t.C:
-		case <-d.rn:
-		}
-		result, sc := d.lookup()
-		// Next lookup should happen after an interval defined by d.freq.
-		d.t.Reset(d.freq)
-		d.cc.NewServiceConfig(sc)
-		d.cc.NewAddress(result)
-	}
-}
-
-func (d *dnsResolver) lookupSRV() []resolver.Address {
-	var newAddrs []resolver.Address
-	_, srvs, err := lookupSRV(d.ctx, "grpclb", "tcp", d.host)
-	if err != nil {
-		grpclog.Infof("grpc: failed dns SRV record lookup due to %v.\n", err)
-		return nil
-	}
-	for _, s := range srvs {
-		lbAddrs, err := lookupHost(d.ctx, s.Target)
-		if err != nil {
-			grpclog.Infof("grpc: failed load balancer address dns lookup due to %v.\n", err)
-			continue
-		}
-		for _, a := range lbAddrs {
-			a, ok := formatIP(a)
-			if !ok {
-				grpclog.Errorf("grpc: failed IP parsing due to %v.\n", err)
-				continue
-			}
-			addr := a + ":" + strconv.Itoa(int(s.Port))
-			newAddrs = append(newAddrs, resolver.Address{Addr: addr, Type: resolver.GRPCLB, ServerName: s.Target})
-		}
-	}
-	return newAddrs
-}
-
-func (d *dnsResolver) lookupTXT() string {
-	ss, err := lookupTXT(d.ctx, d.host)
-	if err != nil {
-		grpclog.Infof("grpc: failed dns TXT record lookup due to %v.\n", err)
-		return ""
-	}
-	var res string
-	for _, s := range ss {
-		res += s
-	}
-
-	// TXT record must have "grpc_config=" attribute in order to be used as service config.
-	if !strings.HasPrefix(res, txtAttribute) {
-		grpclog.Warningf("grpc: TXT record %v missing %v attribute", res, txtAttribute)
-		return ""
-	}
-	return strings.TrimPrefix(res, txtAttribute)
-}
-
-func (d *dnsResolver) lookupHost() []resolver.Address {
-	var newAddrs []resolver.Address
-	addrs, err := lookupHost(d.ctx, d.host)
-	if err != nil {
-		grpclog.Warningf("grpc: failed dns A record lookup due to %v.\n", err)
-		return nil
-	}
-	for _, a := range addrs {
-		a, ok := formatIP(a)
-		if !ok {
-			grpclog.Errorf("grpc: failed IP parsing due to %v.\n", err)
-			continue
-		}
-		addr := a + ":" + d.port
-		newAddrs = append(newAddrs, resolver.Address{Addr: addr})
-	}
-	return newAddrs
-}
-
-func (d *dnsResolver) lookup() ([]resolver.Address, string) {
-	newAddrs := d.lookupSRV()
-	// Support fallback to non-balancer address.
-	newAddrs = append(newAddrs, d.lookupHost()...)
-	if d.disableServiceConfig {
-		return newAddrs, ""
-	}
-	sc := d.lookupTXT()
-	return newAddrs, canaryingSC(sc)
-}
-
-// formatIP returns ok = false if addr is not a valid textual representation of an IP address.
-// If addr is an IPv4 address, return the addr and ok = true.
-// If addr is an IPv6 address, return the addr enclosed in square brackets and ok = true.
-func formatIP(addr string) (addrIP string, ok bool) {
-	ip := net.ParseIP(addr)
-	if ip == nil {
-		return "", false
-	}
-	if ip.To4() != nil {
-		return addr, true
-	}
-	return "[" + addr + "]", true
-}
-
-// parseTarget takes the user input target string, returns formatted host and port info.
-// If target doesn't specify a port, set the port to be the defaultPort.
-// If target is in IPv6 format and host-name is enclosed in sqarue brackets, brackets
-// are strippd when setting the host.
-// examples:
-// target: "www.google.com" returns host: "www.google.com", port: "443"
-// target: "ipv4-host:80" returns host: "ipv4-host", port: "80"
-// target: "[ipv6-host]" returns host: "ipv6-host", port: "443"
-// target: ":80" returns host: "localhost", port: "80"
-// target: ":" returns host: "localhost", port: "443"
-func parseTarget(target string) (host, port string, err error) {
-	if target == "" {
-		return "", "", errMissingAddr
-	}
-	if ip := net.ParseIP(target); ip != nil {
-		// target is an IPv4 or IPv6(without brackets) address
-		return target, defaultPort, nil
-	}
-	if host, port, err = net.SplitHostPort(target); err == nil {
-		// target has port, i.e ipv4-host:port, [ipv6-host]:port, host-name:port
-		if host == "" {
-			// Keep consistent with net.Dial(): If the host is empty, as in ":80", the local system is assumed.
-			host = "localhost"
-		}
-		if port == "" {
-			// If the port field is empty(target ends with colon), e.g. "[::1]:", defaultPort is used.
-			port = defaultPort
-		}
-		return host, port, nil
-	}
-	if host, port, err = net.SplitHostPort(target + ":" + defaultPort); err == nil {
-		// target doesn't have port
-		return host, port, nil
-	}
-	return "", "", fmt.Errorf("invalid target address %v, error info: %v", target, err)
-}
-
-type rawChoice struct {
-	ClientLanguage *[]string        `json:"clientLanguage,omitempty"`
-	Percentage     *int             `json:"percentage,omitempty"`
-	ClientHostName *[]string        `json:"clientHostName,omitempty"`
-	ServiceConfig  *json.RawMessage `json:"serviceConfig,omitempty"`
-}
-
-func containsString(a *[]string, b string) bool {
-	if a == nil {
-		return true
-	}
-	for _, c := range *a {
-		if c == b {
-			return true
-		}
-	}
-	return false
-}
-
-func chosenByPercentage(a *int) bool {
-	if a == nil {
-		return true
-	}
-	return grpcrand.Intn(100)+1 <= *a
-}
-
-func canaryingSC(js string) string {
-	if js == "" {
-		return ""
-	}
-	var rcs []rawChoice
-	err := json.Unmarshal([]byte(js), &rcs)
-	if err != nil {
-		grpclog.Warningf("grpc: failed to parse service config json string due to %v.\n", err)
-		return ""
-	}
-	cliHostname, err := os.Hostname()
-	if err != nil {
-		grpclog.Warningf("grpc: failed to get client hostname due to %v.\n", err)
-		return ""
-	}
-	var sc string
-	for _, c := range rcs {
-		if !containsString(c.ClientLanguage, golang) ||
-			!chosenByPercentage(c.Percentage) ||
-			!containsString(c.ClientHostName, cliHostname) ||
-			c.ServiceConfig == nil {
-			continue
-		}
-		sc = string(*c.ServiceConfig)
-		break
-	}
-	return sc
-}
diff --git a/vendor/google.golang.org/grpc/resolver/dns/go17.go b/vendor/google.golang.org/grpc/resolver/dns/go17.go
deleted file mode 100644
index b466bc8f6..000000000
--- a/vendor/google.golang.org/grpc/resolver/dns/go17.go
+++ /dev/null
@@ -1,35 +0,0 @@
-// +build go1.6, !go1.8
-
-/*
- *
- * Copyright 2017 gRPC authors.
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *     http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- *
- */
-
-package dns
-
-import (
-	"net"
-
-	"golang.org/x/net/context"
-)
-
-var (
-	lookupHost = func(ctx context.Context, host string) ([]string, error) { return net.LookupHost(host) }
-	lookupSRV  = func(ctx context.Context, service, proto, name string) (string, []*net.SRV, error) {
-		return net.LookupSRV(service, proto, name)
-	}
-	lookupTXT = func(ctx context.Context, name string) ([]string, error) { return net.LookupTXT(name) }
-)
diff --git a/vendor/google.golang.org/grpc/resolver/dns/go18.go b/vendor/google.golang.org/grpc/resolver/dns/go18.go
deleted file mode 100644
index fa34f14ca..000000000
--- a/vendor/google.golang.org/grpc/resolver/dns/go18.go
+++ /dev/null
@@ -1,29 +0,0 @@
-// +build go1.8
-
-/*
- *
- * Copyright 2017 gRPC authors.
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *     http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- *
- */
-
-package dns
-
-import "net"
-
-var (
-	lookupHost = net.DefaultResolver.LookupHost
-	lookupSRV  = net.DefaultResolver.LookupSRV
-	lookupTXT  = net.DefaultResolver.LookupTXT
-)
diff --git a/vendor/google.golang.org/grpc/resolver/passthrough/passthrough.go b/vendor/google.golang.org/grpc/resolver/passthrough/passthrough.go
deleted file mode 100644
index b76010d74..000000000
--- a/vendor/google.golang.org/grpc/resolver/passthrough/passthrough.go
+++ /dev/null
@@ -1,57 +0,0 @@
-/*
- *
- * Copyright 2017 gRPC authors.
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *     http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- *
- */
-
-// Package passthrough implements a pass-through resolver. It sends the target
-// name without scheme back to gRPC as resolved address.
-package passthrough
-
-import "google.golang.org/grpc/resolver"
-
-const scheme = "passthrough"
-
-type passthroughBuilder struct{}
-
-func (*passthroughBuilder) Build(target resolver.Target, cc resolver.ClientConn, opts resolver.BuildOption) (resolver.Resolver, error) {
-	r := &passthroughResolver{
-		target: target,
-		cc:     cc,
-	}
-	r.start()
-	return r, nil
-}
-
-func (*passthroughBuilder) Scheme() string {
-	return scheme
-}
-
-type passthroughResolver struct {
-	target resolver.Target
-	cc     resolver.ClientConn
-}
-
-func (r *passthroughResolver) start() {
-	r.cc.NewAddress([]resolver.Address{{Addr: r.target.Endpoint}})
-}
-
-func (*passthroughResolver) ResolveNow(o resolver.ResolveNowOption) {}
-
-func (*passthroughResolver) Close() {}
-
-func init() {
-	resolver.Register(&passthroughBuilder{})
-}
diff --git a/vendor/google.golang.org/grpc/resolver/resolver.go b/vendor/google.golang.org/grpc/resolver/resolver.go
deleted file mode 100644
index 506afac88..000000000
--- a/vendor/google.golang.org/grpc/resolver/resolver.go
+++ /dev/null
@@ -1,154 +0,0 @@
-/*
- *
- * Copyright 2017 gRPC authors.
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *     http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- *
- */
-
-// Package resolver defines APIs for name resolution in gRPC.
-// All APIs in this package are experimental.
-package resolver
-
-var (
-	// m is a map from scheme to resolver builder.
-	m = make(map[string]Builder)
-	// defaultScheme is the default scheme to use.
-	defaultScheme = "passthrough"
-)
-
-// TODO(bar) install dns resolver in init(){}.
-
-// Register registers the resolver builder to the resolver map. b.Scheme will be
-// used as the scheme registered with this builder.
-//
-// NOTE: this function must only be called during initialization time (i.e. in
-// an init() function), and is not thread-safe. If multiple Resolvers are
-// registered with the same name, the one registered last will take effect.
-func Register(b Builder) {
-	m[b.Scheme()] = b
-}
-
-// Get returns the resolver builder registered with the given scheme.
-//
-// If no builder is register with the scheme, nil will be returned.
-func Get(scheme string) Builder {
-	if b, ok := m[scheme]; ok {
-		return b
-	}
-	return nil
-}
-
-// SetDefaultScheme sets the default scheme that will be used.
-// The default default scheme is "passthrough".
-func SetDefaultScheme(scheme string) {
-	defaultScheme = scheme
-}
-
-// GetDefaultScheme gets the default scheme that will be used.
-func GetDefaultScheme() string {
-	return defaultScheme
-}
-
-// AddressType indicates the address type returned by name resolution.
-type AddressType uint8
-
-const (
-	// Backend indicates the address is for a backend server.
-	Backend AddressType = iota
-	// GRPCLB indicates the address is for a grpclb load balancer.
-	GRPCLB
-)
-
-// Address represents a server the client connects to.
-// This is the EXPERIMENTAL API and may be changed or extended in the future.
-type Address struct {
-	// Addr is the server address on which a connection will be established.
-	Addr string
-	// Type is the type of this address.
-	Type AddressType
-	// ServerName is the name of this address.
-	//
-	// e.g. if Type is GRPCLB, ServerName should be the name of the remote load
-	// balancer, not the name of the backend.
-	ServerName string
-	// Metadata is the information associated with Addr, which may be used
-	// to make load balancing decision.
-	Metadata interface{}
-}
-
-// BuildOption includes additional information for the builder to create
-// the resolver.
-type BuildOption struct {
-	// DisableServiceConfig indicates whether resolver should fetch service config data.
-	DisableServiceConfig bool
-}
-
-// ClientConn contains the callbacks for resolver to notify any updates
-// to the gRPC ClientConn.
-//
-// This interface is to be implemented by gRPC. Users should not need a
-// brand new implementation of this interface. For the situations like
-// testing, the new implementation should embed this interface. This allows
-// gRPC to add new methods to this interface.
-type ClientConn interface {
-	// NewAddress is called by resolver to notify ClientConn a new list
-	// of resolved addresses.
-	// The address list should be the complete list of resolved addresses.
-	NewAddress(addresses []Address)
-	// NewServiceConfig is called by resolver to notify ClientConn a new
-	// service config. The service config should be provided as a json string.
-	NewServiceConfig(serviceConfig string)
-}
-
-// Target represents a target for gRPC, as specified in:
-// https://github.com/grpc/grpc/blob/master/doc/naming.md.
-type Target struct {
-	Scheme    string
-	Authority string
-	Endpoint  string
-}
-
-// Builder creates a resolver that will be used to watch name resolution updates.
-type Builder interface {
-	// Build creates a new resolver for the given target.
-	//
-	// gRPC dial calls Build synchronously, and fails if the returned error is
-	// not nil.
-	Build(target Target, cc ClientConn, opts BuildOption) (Resolver, error)
-	// Scheme returns the scheme supported by this resolver.
-	// Scheme is defined at https://github.com/grpc/grpc/blob/master/doc/naming.md.
-	Scheme() string
-}
-
-// ResolveNowOption includes additional information for ResolveNow.
-type ResolveNowOption struct{}
-
-// Resolver watches for the updates on the specified target.
-// Updates include address updates and service config updates.
-type Resolver interface {
-	// ResolveNow will be called by gRPC to try to resolve the target name
-	// again. It's just a hint, resolver can ignore this if it's not necessary.
-	//
-	// It could be called multiple times concurrently.
-	ResolveNow(ResolveNowOption)
-	// Close closes the resolver.
-	Close()
-}
-
-// UnregisterForTesting removes the resolver builder with the given scheme from the
-// resolver map.
-// This function is for testing only.
-func UnregisterForTesting(scheme string) {
-	delete(m, scheme)
-}
diff --git a/vendor/google.golang.org/grpc/resolver_conn_wrapper.go b/vendor/google.golang.org/grpc/resolver_conn_wrapper.go
deleted file mode 100644
index 494d6931e..000000000
--- a/vendor/google.golang.org/grpc/resolver_conn_wrapper.go
+++ /dev/null
@@ -1,158 +0,0 @@
-/*
- *
- * Copyright 2017 gRPC authors.
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *     http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- *
- */
-
-package grpc
-
-import (
-	"fmt"
-	"strings"
-
-	"google.golang.org/grpc/grpclog"
-	"google.golang.org/grpc/resolver"
-)
-
-// ccResolverWrapper is a wrapper on top of cc for resolvers.
-// It implements resolver.ClientConnection interface.
-type ccResolverWrapper struct {
-	cc       *ClientConn
-	resolver resolver.Resolver
-	addrCh   chan []resolver.Address
-	scCh     chan string
-	done     chan struct{}
-}
-
-// split2 returns the values from strings.SplitN(s, sep, 2).
-// If sep is not found, it returns ("", s, false) instead.
-func split2(s, sep string) (string, string, bool) {
-	spl := strings.SplitN(s, sep, 2)
-	if len(spl) < 2 {
-		return "", "", false
-	}
-	return spl[0], spl[1], true
-}
-
-// parseTarget splits target into a struct containing scheme, authority and
-// endpoint.
-//
-// If target is not a valid scheme://authority/endpoint, it returns {Endpoint:
-// target}.
-func parseTarget(target string) (ret resolver.Target) {
-	var ok bool
-	ret.Scheme, ret.Endpoint, ok = split2(target, "://")
-	if !ok {
-		return resolver.Target{Endpoint: target}
-	}
-	ret.Authority, ret.Endpoint, ok = split2(ret.Endpoint, "/")
-	if !ok {
-		return resolver.Target{Endpoint: target}
-	}
-	return ret
-}
-
-// newCCResolverWrapper parses cc.target for scheme and gets the resolver
-// builder for this scheme and builds the resolver. The monitoring goroutine
-// for it is not started yet and can be created by calling start().
-//
-// If withResolverBuilder dial option is set, the specified resolver will be
-// used instead.
-func newCCResolverWrapper(cc *ClientConn) (*ccResolverWrapper, error) {
-	rb := cc.dopts.resolverBuilder
-	if rb == nil {
-		return nil, fmt.Errorf("could not get resolver for scheme: %q", cc.parsedTarget.Scheme)
-	}
-
-	ccr := &ccResolverWrapper{
-		cc:     cc,
-		addrCh: make(chan []resolver.Address, 1),
-		scCh:   make(chan string, 1),
-		done:   make(chan struct{}),
-	}
-
-	var err error
-	ccr.resolver, err = rb.Build(cc.parsedTarget, ccr, resolver.BuildOption{DisableServiceConfig: cc.dopts.disableServiceConfig})
-	if err != nil {
-		return nil, err
-	}
-	return ccr, nil
-}
-
-func (ccr *ccResolverWrapper) start() {
-	go ccr.watcher()
-}
-
-// watcher processes address updates and service config updates sequentially.
-// Otherwise, we need to resolve possible races between address and service
-// config (e.g. they specify different balancer types).
-func (ccr *ccResolverWrapper) watcher() {
-	for {
-		select {
-		case <-ccr.done:
-			return
-		default:
-		}
-
-		select {
-		case addrs := <-ccr.addrCh:
-			select {
-			case <-ccr.done:
-				return
-			default:
-			}
-			grpclog.Infof("ccResolverWrapper: sending new addresses to cc: %v", addrs)
-			ccr.cc.handleResolvedAddrs(addrs, nil)
-		case sc := <-ccr.scCh:
-			select {
-			case <-ccr.done:
-				return
-			default:
-			}
-			grpclog.Infof("ccResolverWrapper: got new service config: %v", sc)
-			ccr.cc.handleServiceConfig(sc)
-		case <-ccr.done:
-			return
-		}
-	}
-}
-
-func (ccr *ccResolverWrapper) resolveNow(o resolver.ResolveNowOption) {
-	ccr.resolver.ResolveNow(o)
-}
-
-func (ccr *ccResolverWrapper) close() {
-	ccr.resolver.Close()
-	close(ccr.done)
-}
-
-// NewAddress is called by the resolver implemenetion to send addresses to gRPC.
-func (ccr *ccResolverWrapper) NewAddress(addrs []resolver.Address) {
-	select {
-	case <-ccr.addrCh:
-	default:
-	}
-	ccr.addrCh <- addrs
-}
-
-// NewServiceConfig is called by the resolver implemenetion to send service
-// configs to gRPC.
-func (ccr *ccResolverWrapper) NewServiceConfig(sc string) {
-	select {
-	case <-ccr.scCh:
-	default:
-	}
-	ccr.scCh <- sc
-}
diff --git a/vendor/google.golang.org/grpc/rpc_util.go b/vendor/google.golang.org/grpc/rpc_util.go
deleted file mode 100644
index 033801f34..000000000
--- a/vendor/google.golang.org/grpc/rpc_util.go
+++ /dev/null
@@ -1,741 +0,0 @@
-/*
- *
- * Copyright 2014 gRPC authors.
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *     http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- *
- */
-
-package grpc
-
-import (
-	"bytes"
-	"compress/gzip"
-	"encoding/binary"
-	"fmt"
-	"io"
-	"io/ioutil"
-	"math"
-	"net/url"
-	"strings"
-	"sync"
-	"time"
-
-	"golang.org/x/net/context"
-	"google.golang.org/grpc/codes"
-	"google.golang.org/grpc/credentials"
-	"google.golang.org/grpc/encoding"
-	"google.golang.org/grpc/encoding/proto"
-	"google.golang.org/grpc/metadata"
-	"google.golang.org/grpc/peer"
-	"google.golang.org/grpc/stats"
-	"google.golang.org/grpc/status"
-	"google.golang.org/grpc/transport"
-)
-
-// Compressor defines the interface gRPC uses to compress a message.
-//
-// Deprecated: use package encoding.
-type Compressor interface {
-	// Do compresses p into w.
-	Do(w io.Writer, p []byte) error
-	// Type returns the compression algorithm the Compressor uses.
-	Type() string
-}
-
-type gzipCompressor struct {
-	pool sync.Pool
-}
-
-// NewGZIPCompressor creates a Compressor based on GZIP.
-//
-// Deprecated: use package encoding/gzip.
-func NewGZIPCompressor() Compressor {
-	c, _ := NewGZIPCompressorWithLevel(gzip.DefaultCompression)
-	return c
-}
-
-// NewGZIPCompressorWithLevel is like NewGZIPCompressor but specifies the gzip compression level instead
-// of assuming DefaultCompression.
-//
-// The error returned will be nil if the level is valid.
-//
-// Deprecated: use package encoding/gzip.
-func NewGZIPCompressorWithLevel(level int) (Compressor, error) {
-	if level < gzip.DefaultCompression || level > gzip.BestCompression {
-		return nil, fmt.Errorf("grpc: invalid compression level: %d", level)
-	}
-	return &gzipCompressor{
-		pool: sync.Pool{
-			New: func() interface{} {
-				w, err := gzip.NewWriterLevel(ioutil.Discard, level)
-				if err != nil {
-					panic(err)
-				}
-				return w
-			},
-		},
-	}, nil
-}
-
-func (c *gzipCompressor) Do(w io.Writer, p []byte) error {
-	z := c.pool.Get().(*gzip.Writer)
-	defer c.pool.Put(z)
-	z.Reset(w)
-	if _, err := z.Write(p); err != nil {
-		return err
-	}
-	return z.Close()
-}
-
-func (c *gzipCompressor) Type() string {
-	return "gzip"
-}
-
-// Decompressor defines the interface gRPC uses to decompress a message.
-//
-// Deprecated: use package encoding.
-type Decompressor interface {
-	// Do reads the data from r and uncompress them.
-	Do(r io.Reader) ([]byte, error)
-	// Type returns the compression algorithm the Decompressor uses.
-	Type() string
-}
-
-type gzipDecompressor struct {
-	pool sync.Pool
-}
-
-// NewGZIPDecompressor creates a Decompressor based on GZIP.
-//
-// Deprecated: use package encoding/gzip.
-func NewGZIPDecompressor() Decompressor {
-	return &gzipDecompressor{}
-}
-
-func (d *gzipDecompressor) Do(r io.Reader) ([]byte, error) {
-	var z *gzip.Reader
-	switch maybeZ := d.pool.Get().(type) {
-	case nil:
-		newZ, err := gzip.NewReader(r)
-		if err != nil {
-			return nil, err
-		}
-		z = newZ
-	case *gzip.Reader:
-		z = maybeZ
-		if err := z.Reset(r); err != nil {
-			d.pool.Put(z)
-			return nil, err
-		}
-	}
-
-	defer func() {
-		z.Close()
-		d.pool.Put(z)
-	}()
-	return ioutil.ReadAll(z)
-}
-
-func (d *gzipDecompressor) Type() string {
-	return "gzip"
-}
-
-// callInfo contains all related configuration and information about an RPC.
-type callInfo struct {
-	compressorType        string
-	failFast              bool
-	stream                *clientStream
-	traceInfo             traceInfo // in trace.go
-	maxReceiveMessageSize *int
-	maxSendMessageSize    *int
-	creds                 credentials.PerRPCCredentials
-	contentSubtype        string
-	codec                 baseCodec
-}
-
-func defaultCallInfo() *callInfo {
-	return &callInfo{failFast: true}
-}
-
-// CallOption configures a Call before it starts or extracts information from
-// a Call after it completes.
-type CallOption interface {
-	// before is called before the call is sent to any server.  If before
-	// returns a non-nil error, the RPC fails with that error.
-	before(*callInfo) error
-
-	// after is called after the call has completed.  after cannot return an
-	// error, so any failures should be reported via output parameters.
-	after(*callInfo)
-}
-
-// EmptyCallOption does not alter the Call configuration.
-// It can be embedded in another structure to carry satellite data for use
-// by interceptors.
-type EmptyCallOption struct{}
-
-func (EmptyCallOption) before(*callInfo) error { return nil }
-func (EmptyCallOption) after(*callInfo)        {}
-
-// Header returns a CallOptions that retrieves the header metadata
-// for a unary RPC.
-func Header(md *metadata.MD) CallOption {
-	return HeaderCallOption{HeaderAddr: md}
-}
-
-// HeaderCallOption is a CallOption for collecting response header metadata.
-// The metadata field will be populated *after* the RPC completes.
-// This is an EXPERIMENTAL API.
-type HeaderCallOption struct {
-	HeaderAddr *metadata.MD
-}
-
-func (o HeaderCallOption) before(c *callInfo) error { return nil }
-func (o HeaderCallOption) after(c *callInfo) {
-	if c.stream != nil {
-		*o.HeaderAddr, _ = c.stream.Header()
-	}
-}
-
-// Trailer returns a CallOptions that retrieves the trailer metadata
-// for a unary RPC.
-func Trailer(md *metadata.MD) CallOption {
-	return TrailerCallOption{TrailerAddr: md}
-}
-
-// TrailerCallOption is a CallOption for collecting response trailer metadata.
-// The metadata field will be populated *after* the RPC completes.
-// This is an EXPERIMENTAL API.
-type TrailerCallOption struct {
-	TrailerAddr *metadata.MD
-}
-
-func (o TrailerCallOption) before(c *callInfo) error { return nil }
-func (o TrailerCallOption) after(c *callInfo) {
-	if c.stream != nil {
-		*o.TrailerAddr = c.stream.Trailer()
-	}
-}
-
-// Peer returns a CallOption that retrieves peer information for a unary RPC.
-// The peer field will be populated *after* the RPC completes.
-func Peer(p *peer.Peer) CallOption {
-	return PeerCallOption{PeerAddr: p}
-}
-
-// PeerCallOption is a CallOption for collecting the identity of the remote
-// peer. The peer field will be populated *after* the RPC completes.
-// This is an EXPERIMENTAL API.
-type PeerCallOption struct {
-	PeerAddr *peer.Peer
-}
-
-func (o PeerCallOption) before(c *callInfo) error { return nil }
-func (o PeerCallOption) after(c *callInfo) {
-	if c.stream != nil {
-		if x, ok := peer.FromContext(c.stream.Context()); ok {
-			*o.PeerAddr = *x
-		}
-	}
-}
-
-// FailFast configures the action to take when an RPC is attempted on broken
-// connections or unreachable servers.  If failFast is true, the RPC will fail
-// immediately. Otherwise, the RPC client will block the call until a
-// connection is available (or the call is canceled or times out) and will
-// retry the call if it fails due to a transient error.  gRPC will not retry if
-// data was written to the wire unless the server indicates it did not process
-// the data.  Please refer to
-// https://github.com/grpc/grpc/blob/master/doc/wait-for-ready.md.
-//
-// By default, RPCs are "Fail Fast".
-func FailFast(failFast bool) CallOption {
-	return FailFastCallOption{FailFast: failFast}
-}
-
-// FailFastCallOption is a CallOption for indicating whether an RPC should fail
-// fast or not.
-// This is an EXPERIMENTAL API.
-type FailFastCallOption struct {
-	FailFast bool
-}
-
-func (o FailFastCallOption) before(c *callInfo) error {
-	c.failFast = o.FailFast
-	return nil
-}
-func (o FailFastCallOption) after(c *callInfo) {}
-
-// MaxCallRecvMsgSize returns a CallOption which sets the maximum message size the client can receive.
-func MaxCallRecvMsgSize(s int) CallOption {
-	return MaxRecvMsgSizeCallOption{MaxRecvMsgSize: s}
-}
-
-// MaxRecvMsgSizeCallOption is a CallOption that indicates the maximum message
-// size the client can receive.
-// This is an EXPERIMENTAL API.
-type MaxRecvMsgSizeCallOption struct {
-	MaxRecvMsgSize int
-}
-
-func (o MaxRecvMsgSizeCallOption) before(c *callInfo) error {
-	c.maxReceiveMessageSize = &o.MaxRecvMsgSize
-	return nil
-}
-func (o MaxRecvMsgSizeCallOption) after(c *callInfo) {}
-
-// MaxCallSendMsgSize returns a CallOption which sets the maximum message size the client can send.
-func MaxCallSendMsgSize(s int) CallOption {
-	return MaxSendMsgSizeCallOption{MaxSendMsgSize: s}
-}
-
-// MaxSendMsgSizeCallOption is a CallOption that indicates the maximum message
-// size the client can send.
-// This is an EXPERIMENTAL API.
-type MaxSendMsgSizeCallOption struct {
-	MaxSendMsgSize int
-}
-
-func (o MaxSendMsgSizeCallOption) before(c *callInfo) error {
-	c.maxSendMessageSize = &o.MaxSendMsgSize
-	return nil
-}
-func (o MaxSendMsgSizeCallOption) after(c *callInfo) {}
-
-// PerRPCCredentials returns a CallOption that sets credentials.PerRPCCredentials
-// for a call.
-func PerRPCCredentials(creds credentials.PerRPCCredentials) CallOption {
-	return PerRPCCredsCallOption{Creds: creds}
-}
-
-// PerRPCCredsCallOption is a CallOption that indicates the per-RPC
-// credentials to use for the call.
-// This is an EXPERIMENTAL API.
-type PerRPCCredsCallOption struct {
-	Creds credentials.PerRPCCredentials
-}
-
-func (o PerRPCCredsCallOption) before(c *callInfo) error {
-	c.creds = o.Creds
-	return nil
-}
-func (o PerRPCCredsCallOption) after(c *callInfo) {}
-
-// UseCompressor returns a CallOption which sets the compressor used when
-// sending the request.  If WithCompressor is also set, UseCompressor has
-// higher priority.
-//
-// This API is EXPERIMENTAL.
-func UseCompressor(name string) CallOption {
-	return CompressorCallOption{CompressorType: name}
-}
-
-// CompressorCallOption is a CallOption that indicates the compressor to use.
-// This is an EXPERIMENTAL API.
-type CompressorCallOption struct {
-	CompressorType string
-}
-
-func (o CompressorCallOption) before(c *callInfo) error {
-	c.compressorType = o.CompressorType
-	return nil
-}
-func (o CompressorCallOption) after(c *callInfo) {}
-
-// CallContentSubtype returns a CallOption that will set the content-subtype
-// for a call. For example, if content-subtype is "json", the Content-Type over
-// the wire will be "application/grpc+json". The content-subtype is converted
-// to lowercase before being included in Content-Type. See Content-Type on
-// https://github.com/grpc/grpc/blob/master/doc/PROTOCOL-HTTP2.md#requests for
-// more details.
-//
-// If CallCustomCodec is not also used, the content-subtype will be used to
-// look up the Codec to use in the registry controlled by RegisterCodec. See
-// the documentation on RegisterCodec for details on registration. The lookup
-// of content-subtype is case-insensitive. If no such Codec is found, the call
-// will result in an error with code codes.Internal.
-//
-// If CallCustomCodec is also used, that Codec will be used for all request and
-// response messages, with the content-subtype set to the given contentSubtype
-// here for requests.
-func CallContentSubtype(contentSubtype string) CallOption {
-	return ContentSubtypeCallOption{ContentSubtype: strings.ToLower(contentSubtype)}
-}
-
-// ContentSubtypeCallOption is a CallOption that indicates the content-subtype
-// used for marshaling messages.
-// This is an EXPERIMENTAL API.
-type ContentSubtypeCallOption struct {
-	ContentSubtype string
-}
-
-func (o ContentSubtypeCallOption) before(c *callInfo) error {
-	c.contentSubtype = o.ContentSubtype
-	return nil
-}
-func (o ContentSubtypeCallOption) after(c *callInfo) {}
-
-// CallCustomCodec returns a CallOption that will set the given Codec to be
-// used for all request and response messages for a call. The result of calling
-// String() will be used as the content-subtype in a case-insensitive manner.
-//
-// See Content-Type on
-// https://github.com/grpc/grpc/blob/master/doc/PROTOCOL-HTTP2.md#requests for
-// more details. Also see the documentation on RegisterCodec and
-// CallContentSubtype for more details on the interaction between Codec and
-// content-subtype.
-//
-// This function is provided for advanced users; prefer to use only
-// CallContentSubtype to select a registered codec instead.
-func CallCustomCodec(codec Codec) CallOption {
-	return CustomCodecCallOption{Codec: codec}
-}
-
-// CustomCodecCallOption is a CallOption that indicates the codec used for
-// marshaling messages.
-// This is an EXPERIMENTAL API.
-type CustomCodecCallOption struct {
-	Codec Codec
-}
-
-func (o CustomCodecCallOption) before(c *callInfo) error {
-	c.codec = o.Codec
-	return nil
-}
-func (o CustomCodecCallOption) after(c *callInfo) {}
-
-// The format of the payload: compressed or not?
-type payloadFormat uint8
-
-const (
-	compressionNone payloadFormat = 0 // no compression
-	compressionMade payloadFormat = 1 // compressed
-)
-
-// parser reads complete gRPC messages from the underlying reader.
-type parser struct {
-	// r is the underlying reader.
-	// See the comment on recvMsg for the permissible
-	// error types.
-	r io.Reader
-
-	// The header of a gRPC message. Find more detail at
-	// https://github.com/grpc/grpc/blob/master/doc/PROTOCOL-HTTP2.md
-	header [5]byte
-}
-
-// recvMsg reads a complete gRPC message from the stream.
-//
-// It returns the message and its payload (compression/encoding)
-// format. The caller owns the returned msg memory.
-//
-// If there is an error, possible values are:
-//   * io.EOF, when no messages remain
-//   * io.ErrUnexpectedEOF
-//   * of type transport.ConnectionError
-//   * of type transport.StreamError
-// No other error values or types must be returned, which also means
-// that the underlying io.Reader must not return an incompatible
-// error.
-func (p *parser) recvMsg(maxReceiveMessageSize int) (pf payloadFormat, msg []byte, err error) {
-	if _, err := p.r.Read(p.header[:]); err != nil {
-		return 0, nil, err
-	}
-
-	pf = payloadFormat(p.header[0])
-	length := binary.BigEndian.Uint32(p.header[1:])
-
-	if length == 0 {
-		return pf, nil, nil
-	}
-	if int64(length) > int64(maxInt) {
-		return 0, nil, status.Errorf(codes.ResourceExhausted, "grpc: received message larger than max length allowed on current machine (%d vs. %d)", length, maxInt)
-	}
-	if int(length) > maxReceiveMessageSize {
-		return 0, nil, status.Errorf(codes.ResourceExhausted, "grpc: received message larger than max (%d vs. %d)", length, maxReceiveMessageSize)
-	}
-	// TODO(bradfitz,zhaoq): garbage. reuse buffer after proto decoding instead
-	// of making it for each message:
-	msg = make([]byte, int(length))
-	if _, err := p.r.Read(msg); err != nil {
-		if err == io.EOF {
-			err = io.ErrUnexpectedEOF
-		}
-		return 0, nil, err
-	}
-	return pf, msg, nil
-}
-
-// encode serializes msg and returns a buffer containing the message, or an
-// error if it is too large to be transmitted by grpc.  If msg is nil, it
-// generates an empty message.
-func encode(c baseCodec, msg interface{}) ([]byte, error) {
-	if msg == nil { // NOTE: typed nils will not be caught by this check
-		return nil, nil
-	}
-	b, err := c.Marshal(msg)
-	if err != nil {
-		return nil, status.Errorf(codes.Internal, "grpc: error while marshaling: %v", err.Error())
-	}
-	if uint(len(b)) > math.MaxUint32 {
-		return nil, status.Errorf(codes.ResourceExhausted, "grpc: message too large (%d bytes)", len(b))
-	}
-	return b, nil
-}
-
-// compress returns the input bytes compressed by compressor or cp.  If both
-// compressors are nil, returns nil.
-//
-// TODO(dfawley): eliminate cp parameter by wrapping Compressor in an encoding.Compressor.
-func compress(in []byte, cp Compressor, compressor encoding.Compressor) ([]byte, error) {
-	if compressor == nil && cp == nil {
-		return nil, nil
-	}
-	wrapErr := func(err error) error {
-		return status.Errorf(codes.Internal, "grpc: error while compressing: %v", err.Error())
-	}
-	cbuf := &bytes.Buffer{}
-	if compressor != nil {
-		z, _ := compressor.Compress(cbuf)
-		if _, err := z.Write(in); err != nil {
-			return nil, wrapErr(err)
-		}
-		if err := z.Close(); err != nil {
-			return nil, wrapErr(err)
-		}
-	} else {
-		if err := cp.Do(cbuf, in); err != nil {
-			return nil, wrapErr(err)
-		}
-	}
-	return cbuf.Bytes(), nil
-}
-
-const (
-	payloadLen = 1
-	sizeLen    = 4
-	headerLen  = payloadLen + sizeLen
-)
-
-// msgHeader returns a 5-byte header for the message being transmitted and the
-// payload, which is compData if non-nil or data otherwise.
-func msgHeader(data, compData []byte) (hdr []byte, payload []byte) {
-	hdr = make([]byte, headerLen)
-	if compData != nil {
-		hdr[0] = byte(compressionMade)
-		data = compData
-	} else {
-		hdr[0] = byte(compressionNone)
-	}
-
-	// Write length of payload into buf
-	binary.BigEndian.PutUint32(hdr[payloadLen:], uint32(len(data)))
-	return hdr, data
-}
-
-func outPayload(client bool, msg interface{}, data, payload []byte, t time.Time) *stats.OutPayload {
-	return &stats.OutPayload{
-		Client:     client,
-		Payload:    msg,
-		Data:       data,
-		Length:     len(data),
-		WireLength: len(payload) + headerLen,
-		SentTime:   t,
-	}
-}
-
-func checkRecvPayload(pf payloadFormat, recvCompress string, haveCompressor bool) *status.Status {
-	switch pf {
-	case compressionNone:
-	case compressionMade:
-		if recvCompress == "" || recvCompress == encoding.Identity {
-			return status.New(codes.Internal, "grpc: compressed flag set with identity or empty encoding")
-		}
-		if !haveCompressor {
-			return status.Newf(codes.Unimplemented, "grpc: Decompressor is not installed for grpc-encoding %q", recvCompress)
-		}
-	default:
-		return status.Newf(codes.Internal, "grpc: received unexpected payload format %d", pf)
-	}
-	return nil
-}
-
-// For the two compressor parameters, both should not be set, but if they are,
-// dc takes precedence over compressor.
-// TODO(dfawley): wrap the old compressor/decompressor using the new API?
-func recv(p *parser, c baseCodec, s *transport.Stream, dc Decompressor, m interface{}, maxReceiveMessageSize int, inPayload *stats.InPayload, compressor encoding.Compressor) error {
-	pf, d, err := p.recvMsg(maxReceiveMessageSize)
-	if err != nil {
-		return err
-	}
-	if inPayload != nil {
-		inPayload.WireLength = len(d)
-	}
-
-	if st := checkRecvPayload(pf, s.RecvCompress(), compressor != nil || dc != nil); st != nil {
-		return st.Err()
-	}
-
-	if pf == compressionMade {
-		// To match legacy behavior, if the decompressor is set by WithDecompressor or RPCDecompressor,
-		// use this decompressor as the default.
-		if dc != nil {
-			d, err = dc.Do(bytes.NewReader(d))
-			if err != nil {
-				return status.Errorf(codes.Internal, "grpc: failed to decompress the received message %v", err)
-			}
-		} else {
-			dcReader, err := compressor.Decompress(bytes.NewReader(d))
-			if err != nil {
-				return status.Errorf(codes.Internal, "grpc: failed to decompress the received message %v", err)
-			}
-			d, err = ioutil.ReadAll(dcReader)
-			if err != nil {
-				return status.Errorf(codes.Internal, "grpc: failed to decompress the received message %v", err)
-			}
-		}
-	}
-	if len(d) > maxReceiveMessageSize {
-		// TODO: Revisit the error code. Currently keep it consistent with java
-		// implementation.
-		return status.Errorf(codes.ResourceExhausted, "grpc: received message larger than max (%d vs. %d)", len(d), maxReceiveMessageSize)
-	}
-	if err := c.Unmarshal(d, m); err != nil {
-		return status.Errorf(codes.Internal, "grpc: failed to unmarshal the received message %v", err)
-	}
-	if inPayload != nil {
-		inPayload.RecvTime = time.Now()
-		inPayload.Payload = m
-		// TODO truncate large payload.
-		inPayload.Data = d
-		inPayload.Length = len(d)
-	}
-	return nil
-}
-
-type rpcInfo struct {
-	failfast bool
-}
-
-type rpcInfoContextKey struct{}
-
-func newContextWithRPCInfo(ctx context.Context, failfast bool) context.Context {
-	return context.WithValue(ctx, rpcInfoContextKey{}, &rpcInfo{failfast: failfast})
-}
-
-func rpcInfoFromContext(ctx context.Context) (s *rpcInfo, ok bool) {
-	s, ok = ctx.Value(rpcInfoContextKey{}).(*rpcInfo)
-	return
-}
-
-// Code returns the error code for err if it was produced by the rpc system.
-// Otherwise, it returns codes.Unknown.
-//
-// Deprecated: use status.FromError and Code method instead.
-func Code(err error) codes.Code {
-	if s, ok := status.FromError(err); ok {
-		return s.Code()
-	}
-	return codes.Unknown
-}
-
-// ErrorDesc returns the error description of err if it was produced by the rpc system.
-// Otherwise, it returns err.Error() or empty string when err is nil.
-//
-// Deprecated: use status.FromError and Message method instead.
-func ErrorDesc(err error) string {
-	if s, ok := status.FromError(err); ok {
-		return s.Message()
-	}
-	return err.Error()
-}
-
-// Errorf returns an error containing an error code and a description;
-// Errorf returns nil if c is OK.
-//
-// Deprecated: use status.Errorf instead.
-func Errorf(c codes.Code, format string, a ...interface{}) error {
-	return status.Errorf(c, format, a...)
-}
-
-// setCallInfoCodec should only be called after CallOptions have been applied.
-func setCallInfoCodec(c *callInfo) error {
-	if c.codec != nil {
-		// codec was already set by a CallOption; use it.
-		return nil
-	}
-
-	if c.contentSubtype == "" {
-		// No codec specified in CallOptions; use proto by default.
-		c.codec = encoding.GetCodec(proto.Name)
-		return nil
-	}
-
-	// c.contentSubtype is already lowercased in CallContentSubtype
-	c.codec = encoding.GetCodec(c.contentSubtype)
-	if c.codec == nil {
-		return status.Errorf(codes.Internal, "no codec registered for content-subtype %s", c.contentSubtype)
-	}
-	return nil
-}
-
-// parseDialTarget returns the network and address to pass to dialer
-func parseDialTarget(target string) (net string, addr string) {
-	net = "tcp"
-
-	m1 := strings.Index(target, ":")
-	m2 := strings.Index(target, ":/")
-
-	// handle unix:addr which will fail with url.Parse
-	if m1 >= 0 && m2 < 0 {
-		if n := target[0:m1]; n == "unix" {
-			net = n
-			addr = target[m1+1:]
-			return net, addr
-		}
-	}
-	if m2 >= 0 {
-		t, err := url.Parse(target)
-		if err != nil {
-			return net, target
-		}
-		scheme := t.Scheme
-		addr = t.Path
-		if scheme == "unix" {
-			net = scheme
-			if addr == "" {
-				addr = t.Host
-			}
-			return net, addr
-		}
-	}
-
-	return net, target
-}
-
-// The SupportPackageIsVersion variables are referenced from generated protocol
-// buffer files to ensure compatibility with the gRPC version used.  The latest
-// support package version is 5.
-//
-// Older versions are kept for compatibility. They may be removed if
-// compatibility cannot be maintained.
-//
-// These constants should not be referenced from any other code.
-const (
-	SupportPackageIsVersion3 = true
-	SupportPackageIsVersion4 = true
-	SupportPackageIsVersion5 = true
-)
-
-const grpcUA = "grpc-go/" + Version
diff --git a/vendor/google.golang.org/grpc/server.go b/vendor/google.golang.org/grpc/server.go
deleted file mode 100644
index 014c72b3f..000000000
--- a/vendor/google.golang.org/grpc/server.go
+++ /dev/null
@@ -1,1486 +0,0 @@
-/*
- *
- * Copyright 2014 gRPC authors.
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *     http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- *
- */
-
-package grpc
-
-import (
-	"bytes"
-	"errors"
-	"fmt"
-	"io"
-	"math"
-	"net"
-	"net/http"
-	"reflect"
-	"runtime"
-	"strings"
-	"sync"
-	"time"
-
-	"io/ioutil"
-
-	"golang.org/x/net/context"
-	"golang.org/x/net/http2"
-	"golang.org/x/net/trace"
-
-	"google.golang.org/grpc/codes"
-	"google.golang.org/grpc/credentials"
-	"google.golang.org/grpc/encoding"
-	"google.golang.org/grpc/encoding/proto"
-	"google.golang.org/grpc/grpclog"
-	"google.golang.org/grpc/internal"
-	"google.golang.org/grpc/internal/channelz"
-	"google.golang.org/grpc/keepalive"
-	"google.golang.org/grpc/metadata"
-	"google.golang.org/grpc/stats"
-	"google.golang.org/grpc/status"
-	"google.golang.org/grpc/tap"
-	"google.golang.org/grpc/transport"
-)
-
-const (
-	defaultServerMaxReceiveMessageSize = 1024 * 1024 * 4
-	defaultServerMaxSendMessageSize    = math.MaxInt32
-)
-
-type methodHandler func(srv interface{}, ctx context.Context, dec func(interface{}) error, interceptor UnaryServerInterceptor) (interface{}, error)
-
-// MethodDesc represents an RPC service's method specification.
-type MethodDesc struct {
-	MethodName string
-	Handler    methodHandler
-}
-
-// ServiceDesc represents an RPC service's specification.
-type ServiceDesc struct {
-	ServiceName string
-	// The pointer to the service interface. Used to check whether the user
-	// provided implementation satisfies the interface requirements.
-	HandlerType interface{}
-	Methods     []MethodDesc
-	Streams     []StreamDesc
-	Metadata    interface{}
-}
-
-// service consists of the information of the server serving this service and
-// the methods in this service.
-type service struct {
-	server interface{} // the server for service methods
-	md     map[string]*MethodDesc
-	sd     map[string]*StreamDesc
-	mdata  interface{}
-}
-
-// Server is a gRPC server to serve RPC requests.
-type Server struct {
-	opts options
-
-	mu     sync.Mutex // guards following
-	lis    map[net.Listener]bool
-	conns  map[io.Closer]bool
-	serve  bool
-	drain  bool
-	cv     *sync.Cond          // signaled when connections close for GracefulStop
-	m      map[string]*service // service name -> service info
-	events trace.EventLog
-
-	quit               chan struct{}
-	done               chan struct{}
-	quitOnce           sync.Once
-	doneOnce           sync.Once
-	channelzRemoveOnce sync.Once
-	serveWG            sync.WaitGroup // counts active Serve goroutines for GracefulStop
-
-	channelzID          int64 // channelz unique identification number
-	czmu                sync.RWMutex
-	callsStarted        int64
-	callsFailed         int64
-	callsSucceeded      int64
-	lastCallStartedTime time.Time
-}
-
-type options struct {
-	creds                 credentials.TransportCredentials
-	codec                 baseCodec
-	cp                    Compressor
-	dc                    Decompressor
-	unaryInt              UnaryServerInterceptor
-	streamInt             StreamServerInterceptor
-	inTapHandle           tap.ServerInHandle
-	statsHandler          stats.Handler
-	maxConcurrentStreams  uint32
-	maxReceiveMessageSize int
-	maxSendMessageSize    int
-	useHandlerImpl        bool // use http.Handler-based server
-	unknownStreamDesc     *StreamDesc
-	keepaliveParams       keepalive.ServerParameters
-	keepalivePolicy       keepalive.EnforcementPolicy
-	initialWindowSize     int32
-	initialConnWindowSize int32
-	writeBufferSize       int
-	readBufferSize        int
-	connectionTimeout     time.Duration
-}
-
-var defaultServerOptions = options{
-	maxReceiveMessageSize: defaultServerMaxReceiveMessageSize,
-	maxSendMessageSize:    defaultServerMaxSendMessageSize,
-	connectionTimeout:     120 * time.Second,
-}
-
-// A ServerOption sets options such as credentials, codec and keepalive parameters, etc.
-type ServerOption func(*options)
-
-// WriteBufferSize lets you set the size of write buffer, this determines how much data can be batched
-// before doing a write on the wire.
-func WriteBufferSize(s int) ServerOption {
-	return func(o *options) {
-		o.writeBufferSize = s
-	}
-}
-
-// ReadBufferSize lets you set the size of read buffer, this determines how much data can be read at most
-// for one read syscall.
-func ReadBufferSize(s int) ServerOption {
-	return func(o *options) {
-		o.readBufferSize = s
-	}
-}
-
-// InitialWindowSize returns a ServerOption that sets window size for stream.
-// The lower bound for window size is 64K and any value smaller than that will be ignored.
-func InitialWindowSize(s int32) ServerOption {
-	return func(o *options) {
-		o.initialWindowSize = s
-	}
-}
-
-// InitialConnWindowSize returns a ServerOption that sets window size for a connection.
-// The lower bound for window size is 64K and any value smaller than that will be ignored.
-func InitialConnWindowSize(s int32) ServerOption {
-	return func(o *options) {
-		o.initialConnWindowSize = s
-	}
-}
-
-// KeepaliveParams returns a ServerOption that sets keepalive and max-age parameters for the server.
-func KeepaliveParams(kp keepalive.ServerParameters) ServerOption {
-	return func(o *options) {
-		o.keepaliveParams = kp
-	}
-}
-
-// KeepaliveEnforcementPolicy returns a ServerOption that sets keepalive enforcement policy for the server.
-func KeepaliveEnforcementPolicy(kep keepalive.EnforcementPolicy) ServerOption {
-	return func(o *options) {
-		o.keepalivePolicy = kep
-	}
-}
-
-// CustomCodec returns a ServerOption that sets a codec for message marshaling and unmarshaling.
-//
-// This will override any lookups by content-subtype for Codecs registered with RegisterCodec.
-func CustomCodec(codec Codec) ServerOption {
-	return func(o *options) {
-		o.codec = codec
-	}
-}
-
-// RPCCompressor returns a ServerOption that sets a compressor for outbound
-// messages.  For backward compatibility, all outbound messages will be sent
-// using this compressor, regardless of incoming message compression.  By
-// default, server messages will be sent using the same compressor with which
-// request messages were sent.
-//
-// Deprecated: use encoding.RegisterCompressor instead.
-func RPCCompressor(cp Compressor) ServerOption {
-	return func(o *options) {
-		o.cp = cp
-	}
-}
-
-// RPCDecompressor returns a ServerOption that sets a decompressor for inbound
-// messages.  It has higher priority than decompressors registered via
-// encoding.RegisterCompressor.
-//
-// Deprecated: use encoding.RegisterCompressor instead.
-func RPCDecompressor(dc Decompressor) ServerOption {
-	return func(o *options) {
-		o.dc = dc
-	}
-}
-
-// MaxMsgSize returns a ServerOption to set the max message size in bytes the server can receive.
-// If this is not set, gRPC uses the default limit.
-//
-// Deprecated: use MaxRecvMsgSize instead.
-func MaxMsgSize(m int) ServerOption {
-	return MaxRecvMsgSize(m)
-}
-
-// MaxRecvMsgSize returns a ServerOption to set the max message size in bytes the server can receive.
-// If this is not set, gRPC uses the default 4MB.
-func MaxRecvMsgSize(m int) ServerOption {
-	return func(o *options) {
-		o.maxReceiveMessageSize = m
-	}
-}
-
-// MaxSendMsgSize returns a ServerOption to set the max message size in bytes the server can send.
-// If this is not set, gRPC uses the default 4MB.
-func MaxSendMsgSize(m int) ServerOption {
-	return func(o *options) {
-		o.maxSendMessageSize = m
-	}
-}
-
-// MaxConcurrentStreams returns a ServerOption that will apply a limit on the number
-// of concurrent streams to each ServerTransport.
-func MaxConcurrentStreams(n uint32) ServerOption {
-	return func(o *options) {
-		o.maxConcurrentStreams = n
-	}
-}
-
-// Creds returns a ServerOption that sets credentials for server connections.
-func Creds(c credentials.TransportCredentials) ServerOption {
-	return func(o *options) {
-		o.creds = c
-	}
-}
-
-// UnaryInterceptor returns a ServerOption that sets the UnaryServerInterceptor for the
-// server. Only one unary interceptor can be installed. The construction of multiple
-// interceptors (e.g., chaining) can be implemented at the caller.
-func UnaryInterceptor(i UnaryServerInterceptor) ServerOption {
-	return func(o *options) {
-		if o.unaryInt != nil {
-			panic("The unary server interceptor was already set and may not be reset.")
-		}
-		o.unaryInt = i
-	}
-}
-
-// StreamInterceptor returns a ServerOption that sets the StreamServerInterceptor for the
-// server. Only one stream interceptor can be installed.
-func StreamInterceptor(i StreamServerInterceptor) ServerOption {
-	return func(o *options) {
-		if o.streamInt != nil {
-			panic("The stream server interceptor was already set and may not be reset.")
-		}
-		o.streamInt = i
-	}
-}
-
-// InTapHandle returns a ServerOption that sets the tap handle for all the server
-// transport to be created. Only one can be installed.
-func InTapHandle(h tap.ServerInHandle) ServerOption {
-	return func(o *options) {
-		if o.inTapHandle != nil {
-			panic("The tap handle was already set and may not be reset.")
-		}
-		o.inTapHandle = h
-	}
-}
-
-// StatsHandler returns a ServerOption that sets the stats handler for the server.
-func StatsHandler(h stats.Handler) ServerOption {
-	return func(o *options) {
-		o.statsHandler = h
-	}
-}
-
-// UnknownServiceHandler returns a ServerOption that allows for adding a custom
-// unknown service handler. The provided method is a bidi-streaming RPC service
-// handler that will be invoked instead of returning the "unimplemented" gRPC
-// error whenever a request is received for an unregistered service or method.
-// The handling function has full access to the Context of the request and the
-// stream, and the invocation bypasses interceptors.
-func UnknownServiceHandler(streamHandler StreamHandler) ServerOption {
-	return func(o *options) {
-		o.unknownStreamDesc = &StreamDesc{
-			StreamName: "unknown_service_handler",
-			Handler:    streamHandler,
-			// We need to assume that the users of the streamHandler will want to use both.
-			ClientStreams: true,
-			ServerStreams: true,
-		}
-	}
-}
-
-// ConnectionTimeout returns a ServerOption that sets the timeout for
-// connection establishment (up to and including HTTP/2 handshaking) for all
-// new connections.  If this is not set, the default is 120 seconds.  A zero or
-// negative value will result in an immediate timeout.
-//
-// This API is EXPERIMENTAL.
-func ConnectionTimeout(d time.Duration) ServerOption {
-	return func(o *options) {
-		o.connectionTimeout = d
-	}
-}
-
-// NewServer creates a gRPC server which has no service registered and has not
-// started to accept requests yet.
-func NewServer(opt ...ServerOption) *Server {
-	opts := defaultServerOptions
-	for _, o := range opt {
-		o(&opts)
-	}
-	s := &Server{
-		lis:   make(map[net.Listener]bool),
-		opts:  opts,
-		conns: make(map[io.Closer]bool),
-		m:     make(map[string]*service),
-		quit:  make(chan struct{}),
-		done:  make(chan struct{}),
-	}
-	s.cv = sync.NewCond(&s.mu)
-	if EnableTracing {
-		_, file, line, _ := runtime.Caller(1)
-		s.events = trace.NewEventLog("grpc.Server", fmt.Sprintf("%s:%d", file, line))
-	}
-
-	if channelz.IsOn() {
-		s.channelzID = channelz.RegisterServer(s, "")
-	}
-	return s
-}
-
-// printf records an event in s's event log, unless s has been stopped.
-// REQUIRES s.mu is held.
-func (s *Server) printf(format string, a ...interface{}) {
-	if s.events != nil {
-		s.events.Printf(format, a...)
-	}
-}
-
-// errorf records an error in s's event log, unless s has been stopped.
-// REQUIRES s.mu is held.
-func (s *Server) errorf(format string, a ...interface{}) {
-	if s.events != nil {
-		s.events.Errorf(format, a...)
-	}
-}
-
-// RegisterService registers a service and its implementation to the gRPC
-// server. It is called from the IDL generated code. This must be called before
-// invoking Serve.
-func (s *Server) RegisterService(sd *ServiceDesc, ss interface{}) {
-	ht := reflect.TypeOf(sd.HandlerType).Elem()
-	st := reflect.TypeOf(ss)
-	if !st.Implements(ht) {
-		grpclog.Fatalf("grpc: Server.RegisterService found the handler of type %v that does not satisfy %v", st, ht)
-	}
-	s.register(sd, ss)
-}
-
-func (s *Server) register(sd *ServiceDesc, ss interface{}) {
-	s.mu.Lock()
-	defer s.mu.Unlock()
-	s.printf("RegisterService(%q)", sd.ServiceName)
-	if s.serve {
-		grpclog.Fatalf("grpc: Server.RegisterService after Server.Serve for %q", sd.ServiceName)
-	}
-	if _, ok := s.m[sd.ServiceName]; ok {
-		grpclog.Fatalf("grpc: Server.RegisterService found duplicate service registration for %q", sd.ServiceName)
-	}
-	srv := &service{
-		server: ss,
-		md:     make(map[string]*MethodDesc),
-		sd:     make(map[string]*StreamDesc),
-		mdata:  sd.Metadata,
-	}
-	for i := range sd.Methods {
-		d := &sd.Methods[i]
-		srv.md[d.MethodName] = d
-	}
-	for i := range sd.Streams {
-		d := &sd.Streams[i]
-		srv.sd[d.StreamName] = d
-	}
-	s.m[sd.ServiceName] = srv
-}
-
-// MethodInfo contains the information of an RPC including its method name and type.
-type MethodInfo struct {
-	// Name is the method name only, without the service name or package name.
-	Name string
-	// IsClientStream indicates whether the RPC is a client streaming RPC.
-	IsClientStream bool
-	// IsServerStream indicates whether the RPC is a server streaming RPC.
-	IsServerStream bool
-}
-
-// ServiceInfo contains unary RPC method info, streaming RPC method info and metadata for a service.
-type ServiceInfo struct {
-	Methods []MethodInfo
-	// Metadata is the metadata specified in ServiceDesc when registering service.
-	Metadata interface{}
-}
-
-// GetServiceInfo returns a map from service names to ServiceInfo.
-// Service names include the package names, in the form of <package>.<service>.
-func (s *Server) GetServiceInfo() map[string]ServiceInfo {
-	ret := make(map[string]ServiceInfo)
-	for n, srv := range s.m {
-		methods := make([]MethodInfo, 0, len(srv.md)+len(srv.sd))
-		for m := range srv.md {
-			methods = append(methods, MethodInfo{
-				Name:           m,
-				IsClientStream: false,
-				IsServerStream: false,
-			})
-		}
-		for m, d := range srv.sd {
-			methods = append(methods, MethodInfo{
-				Name:           m,
-				IsClientStream: d.ClientStreams,
-				IsServerStream: d.ServerStreams,
-			})
-		}
-
-		ret[n] = ServiceInfo{
-			Methods:  methods,
-			Metadata: srv.mdata,
-		}
-	}
-	return ret
-}
-
-// ErrServerStopped indicates that the operation is now illegal because of
-// the server being stopped.
-var ErrServerStopped = errors.New("grpc: the server has been stopped")
-
-func (s *Server) useTransportAuthenticator(rawConn net.Conn) (net.Conn, credentials.AuthInfo, error) {
-	if s.opts.creds == nil {
-		return rawConn, nil, nil
-	}
-	return s.opts.creds.ServerHandshake(rawConn)
-}
-
-type listenSocket struct {
-	net.Listener
-	channelzID int64
-}
-
-func (l *listenSocket) ChannelzMetric() *channelz.SocketInternalMetric {
-	return &channelz.SocketInternalMetric{
-		LocalAddr: l.Listener.Addr(),
-	}
-}
-
-func (l *listenSocket) Close() error {
-	err := l.Listener.Close()
-	if channelz.IsOn() {
-		channelz.RemoveEntry(l.channelzID)
-	}
-	return err
-}
-
-// Serve accepts incoming connections on the listener lis, creating a new
-// ServerTransport and service goroutine for each. The service goroutines
-// read gRPC requests and then call the registered handlers to reply to them.
-// Serve returns when lis.Accept fails with fatal errors.  lis will be closed when
-// this method returns.
-// Serve will return a non-nil error unless Stop or GracefulStop is called.
-func (s *Server) Serve(lis net.Listener) error {
-	s.mu.Lock()
-	s.printf("serving")
-	s.serve = true
-	if s.lis == nil {
-		// Serve called after Stop or GracefulStop.
-		s.mu.Unlock()
-		lis.Close()
-		return ErrServerStopped
-	}
-
-	s.serveWG.Add(1)
-	defer func() {
-		s.serveWG.Done()
-		select {
-		// Stop or GracefulStop called; block until done and return nil.
-		case <-s.quit:
-			<-s.done
-		default:
-		}
-	}()
-
-	ls := &listenSocket{Listener: lis}
-	s.lis[ls] = true
-
-	if channelz.IsOn() {
-		ls.channelzID = channelz.RegisterListenSocket(ls, s.channelzID, "")
-	}
-	s.mu.Unlock()
-
-	defer func() {
-		s.mu.Lock()
-		if s.lis != nil && s.lis[ls] {
-			ls.Close()
-			delete(s.lis, ls)
-		}
-		s.mu.Unlock()
-	}()
-
-	var tempDelay time.Duration // how long to sleep on accept failure
-
-	for {
-		rawConn, err := lis.Accept()
-		if err != nil {
-			if ne, ok := err.(interface {
-				Temporary() bool
-			}); ok && ne.Temporary() {
-				if tempDelay == 0 {
-					tempDelay = 5 * time.Millisecond
-				} else {
-					tempDelay *= 2
-				}
-				if max := 1 * time.Second; tempDelay > max {
-					tempDelay = max
-				}
-				s.mu.Lock()
-				s.printf("Accept error: %v; retrying in %v", err, tempDelay)
-				s.mu.Unlock()
-				timer := time.NewTimer(tempDelay)
-				select {
-				case <-timer.C:
-				case <-s.quit:
-					timer.Stop()
-					return nil
-				}
-				continue
-			}
-			s.mu.Lock()
-			s.printf("done serving; Accept = %v", err)
-			s.mu.Unlock()
-
-			select {
-			case <-s.quit:
-				return nil
-			default:
-			}
-			return err
-		}
-		tempDelay = 0
-		// Start a new goroutine to deal with rawConn so we don't stall this Accept
-		// loop goroutine.
-		//
-		// Make sure we account for the goroutine so GracefulStop doesn't nil out
-		// s.conns before this conn can be added.
-		s.serveWG.Add(1)
-		go func() {
-			s.handleRawConn(rawConn)
-			s.serveWG.Done()
-		}()
-	}
-}
-
-// handleRawConn forks a goroutine to handle a just-accepted connection that
-// has not had any I/O performed on it yet.
-func (s *Server) handleRawConn(rawConn net.Conn) {
-	rawConn.SetDeadline(time.Now().Add(s.opts.connectionTimeout))
-	conn, authInfo, err := s.useTransportAuthenticator(rawConn)
-	if err != nil {
-		s.mu.Lock()
-		s.errorf("ServerHandshake(%q) failed: %v", rawConn.RemoteAddr(), err)
-		s.mu.Unlock()
-		grpclog.Warningf("grpc: Server.Serve failed to complete security handshake from %q: %v", rawConn.RemoteAddr(), err)
-		// If serverHandshake returns ErrConnDispatched, keep rawConn open.
-		if err != credentials.ErrConnDispatched {
-			rawConn.Close()
-		}
-		rawConn.SetDeadline(time.Time{})
-		return
-	}
-
-	s.mu.Lock()
-	if s.conns == nil {
-		s.mu.Unlock()
-		conn.Close()
-		return
-	}
-	s.mu.Unlock()
-
-	var serve func()
-	c := conn.(io.Closer)
-	if s.opts.useHandlerImpl {
-		serve = func() { s.serveUsingHandler(conn) }
-	} else {
-		// Finish handshaking (HTTP2)
-		st := s.newHTTP2Transport(conn, authInfo)
-		if st == nil {
-			return
-		}
-		c = st
-		serve = func() { s.serveStreams(st) }
-	}
-
-	rawConn.SetDeadline(time.Time{})
-	if !s.addConn(c) {
-		return
-	}
-	go func() {
-		serve()
-		s.removeConn(c)
-	}()
-}
-
-// newHTTP2Transport sets up a http/2 transport (using the
-// gRPC http2 server transport in transport/http2_server.go).
-func (s *Server) newHTTP2Transport(c net.Conn, authInfo credentials.AuthInfo) transport.ServerTransport {
-	config := &transport.ServerConfig{
-		MaxStreams:            s.opts.maxConcurrentStreams,
-		AuthInfo:              authInfo,
-		InTapHandle:           s.opts.inTapHandle,
-		StatsHandler:          s.opts.statsHandler,
-		KeepaliveParams:       s.opts.keepaliveParams,
-		KeepalivePolicy:       s.opts.keepalivePolicy,
-		InitialWindowSize:     s.opts.initialWindowSize,
-		InitialConnWindowSize: s.opts.initialConnWindowSize,
-		WriteBufferSize:       s.opts.writeBufferSize,
-		ReadBufferSize:        s.opts.readBufferSize,
-		ChannelzParentID:      s.channelzID,
-	}
-	st, err := transport.NewServerTransport("http2", c, config)
-	if err != nil {
-		s.mu.Lock()
-		s.errorf("NewServerTransport(%q) failed: %v", c.RemoteAddr(), err)
-		s.mu.Unlock()
-		c.Close()
-		grpclog.Warningln("grpc: Server.Serve failed to create ServerTransport: ", err)
-		return nil
-	}
-
-	return st
-}
-
-func (s *Server) serveStreams(st transport.ServerTransport) {
-	defer st.Close()
-	var wg sync.WaitGroup
-	st.HandleStreams(func(stream *transport.Stream) {
-		wg.Add(1)
-		go func() {
-			defer wg.Done()
-			s.handleStream(st, stream, s.traceInfo(st, stream))
-		}()
-	}, func(ctx context.Context, method string) context.Context {
-		if !EnableTracing {
-			return ctx
-		}
-		tr := trace.New("grpc.Recv."+methodFamily(method), method)
-		return trace.NewContext(ctx, tr)
-	})
-	wg.Wait()
-}
-
-var _ http.Handler = (*Server)(nil)
-
-// serveUsingHandler is called from handleRawConn when s is configured
-// to handle requests via the http.Handler interface. It sets up a
-// net/http.Server to handle the just-accepted conn. The http.Server
-// is configured to route all incoming requests (all HTTP/2 streams)
-// to ServeHTTP, which creates a new ServerTransport for each stream.
-// serveUsingHandler blocks until conn closes.
-//
-// This codepath is only used when Server.TestingUseHandlerImpl has
-// been configured. This lets the end2end tests exercise the ServeHTTP
-// method as one of the environment types.
-//
-// conn is the *tls.Conn that's already been authenticated.
-func (s *Server) serveUsingHandler(conn net.Conn) {
-	h2s := &http2.Server{
-		MaxConcurrentStreams: s.opts.maxConcurrentStreams,
-	}
-	h2s.ServeConn(conn, &http2.ServeConnOpts{
-		Handler: s,
-	})
-}
-
-// ServeHTTP implements the Go standard library's http.Handler
-// interface by responding to the gRPC request r, by looking up
-// the requested gRPC method in the gRPC server s.
-//
-// The provided HTTP request must have arrived on an HTTP/2
-// connection. When using the Go standard library's server,
-// practically this means that the Request must also have arrived
-// over TLS.
-//
-// To share one port (such as 443 for https) between gRPC and an
-// existing http.Handler, use a root http.Handler such as:
-//
-//   if r.ProtoMajor == 2 && strings.HasPrefix(
-//   	r.Header.Get("Content-Type"), "application/grpc") {
-//   	grpcServer.ServeHTTP(w, r)
-//   } else {
-//   	yourMux.ServeHTTP(w, r)
-//   }
-//
-// Note that ServeHTTP uses Go's HTTP/2 server implementation which is totally
-// separate from grpc-go's HTTP/2 server. Performance and features may vary
-// between the two paths. ServeHTTP does not support some gRPC features
-// available through grpc-go's HTTP/2 server, and it is currently EXPERIMENTAL
-// and subject to change.
-func (s *Server) ServeHTTP(w http.ResponseWriter, r *http.Request) {
-	st, err := transport.NewServerHandlerTransport(w, r, s.opts.statsHandler)
-	if err != nil {
-		http.Error(w, err.Error(), http.StatusInternalServerError)
-		return
-	}
-	if !s.addConn(st) {
-		return
-	}
-	defer s.removeConn(st)
-	s.serveStreams(st)
-}
-
-// traceInfo returns a traceInfo and associates it with stream, if tracing is enabled.
-// If tracing is not enabled, it returns nil.
-func (s *Server) traceInfo(st transport.ServerTransport, stream *transport.Stream) (trInfo *traceInfo) {
-	tr, ok := trace.FromContext(stream.Context())
-	if !ok {
-		return nil
-	}
-
-	trInfo = &traceInfo{
-		tr: tr,
-	}
-	trInfo.firstLine.client = false
-	trInfo.firstLine.remoteAddr = st.RemoteAddr()
-
-	if dl, ok := stream.Context().Deadline(); ok {
-		trInfo.firstLine.deadline = dl.Sub(time.Now())
-	}
-	return trInfo
-}
-
-func (s *Server) addConn(c io.Closer) bool {
-	s.mu.Lock()
-	defer s.mu.Unlock()
-	if s.conns == nil {
-		c.Close()
-		return false
-	}
-	if s.drain {
-		// Transport added after we drained our existing conns: drain it
-		// immediately.
-		c.(transport.ServerTransport).Drain()
-	}
-	s.conns[c] = true
-	return true
-}
-
-func (s *Server) removeConn(c io.Closer) {
-	s.mu.Lock()
-	defer s.mu.Unlock()
-	if s.conns != nil {
-		delete(s.conns, c)
-		s.cv.Broadcast()
-	}
-}
-
-// ChannelzMetric returns ServerInternalMetric of current server.
-// This is an EXPERIMENTAL API.
-func (s *Server) ChannelzMetric() *channelz.ServerInternalMetric {
-	s.czmu.RLock()
-	defer s.czmu.RUnlock()
-	return &channelz.ServerInternalMetric{
-		CallsStarted:             s.callsStarted,
-		CallsSucceeded:           s.callsSucceeded,
-		CallsFailed:              s.callsFailed,
-		LastCallStartedTimestamp: s.lastCallStartedTime,
-	}
-}
-
-func (s *Server) incrCallsStarted() {
-	s.czmu.Lock()
-	s.callsStarted++
-	s.lastCallStartedTime = time.Now()
-	s.czmu.Unlock()
-}
-
-func (s *Server) incrCallsSucceeded() {
-	s.czmu.Lock()
-	s.callsSucceeded++
-	s.czmu.Unlock()
-}
-
-func (s *Server) incrCallsFailed() {
-	s.czmu.Lock()
-	s.callsFailed++
-	s.czmu.Unlock()
-}
-
-func (s *Server) sendResponse(t transport.ServerTransport, stream *transport.Stream, msg interface{}, cp Compressor, opts *transport.Options, comp encoding.Compressor) error {
-	data, err := encode(s.getCodec(stream.ContentSubtype()), msg)
-	if err != nil {
-		grpclog.Errorln("grpc: server failed to encode response: ", err)
-		return err
-	}
-	compData, err := compress(data, cp, comp)
-	if err != nil {
-		grpclog.Errorln("grpc: server failed to compress response: ", err)
-		return err
-	}
-	hdr, payload := msgHeader(data, compData)
-	// TODO(dfawley): should we be checking len(data) instead?
-	if len(payload) > s.opts.maxSendMessageSize {
-		return status.Errorf(codes.ResourceExhausted, "grpc: trying to send message larger than max (%d vs. %d)", len(payload), s.opts.maxSendMessageSize)
-	}
-	err = t.Write(stream, hdr, payload, opts)
-	if err == nil && s.opts.statsHandler != nil {
-		s.opts.statsHandler.HandleRPC(stream.Context(), outPayload(false, msg, data, payload, time.Now()))
-	}
-	return err
-}
-
-func (s *Server) processUnaryRPC(t transport.ServerTransport, stream *transport.Stream, srv *service, md *MethodDesc, trInfo *traceInfo) (err error) {
-	if channelz.IsOn() {
-		s.incrCallsStarted()
-		defer func() {
-			if err != nil && err != io.EOF {
-				s.incrCallsFailed()
-			} else {
-				s.incrCallsSucceeded()
-			}
-		}()
-	}
-	sh := s.opts.statsHandler
-	if sh != nil {
-		beginTime := time.Now()
-		begin := &stats.Begin{
-			BeginTime: beginTime,
-		}
-		sh.HandleRPC(stream.Context(), begin)
-		defer func() {
-			end := &stats.End{
-				BeginTime: beginTime,
-				EndTime:   time.Now(),
-			}
-			if err != nil && err != io.EOF {
-				end.Error = toRPCErr(err)
-			}
-			sh.HandleRPC(stream.Context(), end)
-		}()
-	}
-	if trInfo != nil {
-		defer trInfo.tr.Finish()
-		trInfo.firstLine.client = false
-		trInfo.tr.LazyLog(&trInfo.firstLine, false)
-		defer func() {
-			if err != nil && err != io.EOF {
-				trInfo.tr.LazyLog(&fmtStringer{"%v", []interface{}{err}}, true)
-				trInfo.tr.SetError()
-			}
-		}()
-	}
-
-	// comp and cp are used for compression.  decomp and dc are used for
-	// decompression.  If comp and decomp are both set, they are the same;
-	// however they are kept separate to ensure that at most one of the
-	// compressor/decompressor variable pairs are set for use later.
-	var comp, decomp encoding.Compressor
-	var cp Compressor
-	var dc Decompressor
-
-	// If dc is set and matches the stream's compression, use it.  Otherwise, try
-	// to find a matching registered compressor for decomp.
-	if rc := stream.RecvCompress(); s.opts.dc != nil && s.opts.dc.Type() == rc {
-		dc = s.opts.dc
-	} else if rc != "" && rc != encoding.Identity {
-		decomp = encoding.GetCompressor(rc)
-		if decomp == nil {
-			st := status.Newf(codes.Unimplemented, "grpc: Decompressor is not installed for grpc-encoding %q", rc)
-			t.WriteStatus(stream, st)
-			return st.Err()
-		}
-	}
-
-	// If cp is set, use it.  Otherwise, attempt to compress the response using
-	// the incoming message compression method.
-	//
-	// NOTE: this needs to be ahead of all handling, https://github.com/grpc/grpc-go/issues/686.
-	if s.opts.cp != nil {
-		cp = s.opts.cp
-		stream.SetSendCompress(cp.Type())
-	} else if rc := stream.RecvCompress(); rc != "" && rc != encoding.Identity {
-		// Legacy compressor not specified; attempt to respond with same encoding.
-		comp = encoding.GetCompressor(rc)
-		if comp != nil {
-			stream.SetSendCompress(rc)
-		}
-	}
-
-	p := &parser{r: stream}
-	pf, req, err := p.recvMsg(s.opts.maxReceiveMessageSize)
-	if err == io.EOF {
-		// The entire stream is done (for unary RPC only).
-		return err
-	}
-	if err == io.ErrUnexpectedEOF {
-		err = status.Errorf(codes.Internal, io.ErrUnexpectedEOF.Error())
-	}
-	if err != nil {
-		if st, ok := status.FromError(err); ok {
-			if e := t.WriteStatus(stream, st); e != nil {
-				grpclog.Warningf("grpc: Server.processUnaryRPC failed to write status %v", e)
-			}
-		} else {
-			switch st := err.(type) {
-			case transport.ConnectionError:
-				// Nothing to do here.
-			case transport.StreamError:
-				if e := t.WriteStatus(stream, status.New(st.Code, st.Desc)); e != nil {
-					grpclog.Warningf("grpc: Server.processUnaryRPC failed to write status %v", e)
-				}
-			default:
-				panic(fmt.Sprintf("grpc: Unexpected error (%T) from recvMsg: %v", st, st))
-			}
-		}
-		return err
-	}
-	if channelz.IsOn() {
-		t.IncrMsgRecv()
-	}
-	if st := checkRecvPayload(pf, stream.RecvCompress(), dc != nil || decomp != nil); st != nil {
-		if e := t.WriteStatus(stream, st); e != nil {
-			grpclog.Warningf("grpc: Server.processUnaryRPC failed to write status %v", e)
-		}
-		return st.Err()
-	}
-	var inPayload *stats.InPayload
-	if sh != nil {
-		inPayload = &stats.InPayload{
-			RecvTime: time.Now(),
-		}
-	}
-	df := func(v interface{}) error {
-		if inPayload != nil {
-			inPayload.WireLength = len(req)
-		}
-		if pf == compressionMade {
-			var err error
-			if dc != nil {
-				req, err = dc.Do(bytes.NewReader(req))
-				if err != nil {
-					return status.Errorf(codes.Internal, err.Error())
-				}
-			} else {
-				tmp, _ := decomp.Decompress(bytes.NewReader(req))
-				req, err = ioutil.ReadAll(tmp)
-				if err != nil {
-					return status.Errorf(codes.Internal, "grpc: failed to decompress the received message %v", err)
-				}
-			}
-		}
-		if len(req) > s.opts.maxReceiveMessageSize {
-			// TODO: Revisit the error code. Currently keep it consistent with
-			// java implementation.
-			return status.Errorf(codes.ResourceExhausted, "grpc: received message larger than max (%d vs. %d)", len(req), s.opts.maxReceiveMessageSize)
-		}
-		if err := s.getCodec(stream.ContentSubtype()).Unmarshal(req, v); err != nil {
-			return status.Errorf(codes.Internal, "grpc: error unmarshalling request: %v", err)
-		}
-		if inPayload != nil {
-			inPayload.Payload = v
-			inPayload.Data = req
-			inPayload.Length = len(req)
-			sh.HandleRPC(stream.Context(), inPayload)
-		}
-		if trInfo != nil {
-			trInfo.tr.LazyLog(&payload{sent: false, msg: v}, true)
-		}
-		return nil
-	}
-	ctx := NewContextWithServerTransportStream(stream.Context(), stream)
-	reply, appErr := md.Handler(srv.server, ctx, df, s.opts.unaryInt)
-	if appErr != nil {
-		appStatus, ok := status.FromError(appErr)
-		if !ok {
-			// Convert appErr if it is not a grpc status error.
-			appErr = status.Error(codes.Unknown, appErr.Error())
-			appStatus, _ = status.FromError(appErr)
-		}
-		if trInfo != nil {
-			trInfo.tr.LazyLog(stringer(appStatus.Message()), true)
-			trInfo.tr.SetError()
-		}
-		if e := t.WriteStatus(stream, appStatus); e != nil {
-			grpclog.Warningf("grpc: Server.processUnaryRPC failed to write status: %v", e)
-		}
-		return appErr
-	}
-	if trInfo != nil {
-		trInfo.tr.LazyLog(stringer("OK"), false)
-	}
-	opts := &transport.Options{
-		Last:  true,
-		Delay: false,
-	}
-
-	if err := s.sendResponse(t, stream, reply, cp, opts, comp); err != nil {
-		if err == io.EOF {
-			// The entire stream is done (for unary RPC only).
-			return err
-		}
-		if s, ok := status.FromError(err); ok {
-			if e := t.WriteStatus(stream, s); e != nil {
-				grpclog.Warningf("grpc: Server.processUnaryRPC failed to write status: %v", e)
-			}
-		} else {
-			switch st := err.(type) {
-			case transport.ConnectionError:
-				// Nothing to do here.
-			case transport.StreamError:
-				if e := t.WriteStatus(stream, status.New(st.Code, st.Desc)); e != nil {
-					grpclog.Warningf("grpc: Server.processUnaryRPC failed to write status %v", e)
-				}
-			default:
-				panic(fmt.Sprintf("grpc: Unexpected error (%T) from sendResponse: %v", st, st))
-			}
-		}
-		return err
-	}
-	if channelz.IsOn() {
-		t.IncrMsgSent()
-	}
-	if trInfo != nil {
-		trInfo.tr.LazyLog(&payload{sent: true, msg: reply}, true)
-	}
-	// TODO: Should we be logging if writing status failed here, like above?
-	// Should the logging be in WriteStatus?  Should we ignore the WriteStatus
-	// error or allow the stats handler to see it?
-	return t.WriteStatus(stream, status.New(codes.OK, ""))
-}
-
-func (s *Server) processStreamingRPC(t transport.ServerTransport, stream *transport.Stream, srv *service, sd *StreamDesc, trInfo *traceInfo) (err error) {
-	if channelz.IsOn() {
-		s.incrCallsStarted()
-		defer func() {
-			if err != nil && err != io.EOF {
-				s.incrCallsFailed()
-			} else {
-				s.incrCallsSucceeded()
-			}
-		}()
-	}
-	sh := s.opts.statsHandler
-	if sh != nil {
-		beginTime := time.Now()
-		begin := &stats.Begin{
-			BeginTime: beginTime,
-		}
-		sh.HandleRPC(stream.Context(), begin)
-		defer func() {
-			end := &stats.End{
-				BeginTime: beginTime,
-				EndTime:   time.Now(),
-			}
-			if err != nil && err != io.EOF {
-				end.Error = toRPCErr(err)
-			}
-			sh.HandleRPC(stream.Context(), end)
-		}()
-	}
-	ctx := NewContextWithServerTransportStream(stream.Context(), stream)
-	ss := &serverStream{
-		ctx:   ctx,
-		t:     t,
-		s:     stream,
-		p:     &parser{r: stream},
-		codec: s.getCodec(stream.ContentSubtype()),
-		maxReceiveMessageSize: s.opts.maxReceiveMessageSize,
-		maxSendMessageSize:    s.opts.maxSendMessageSize,
-		trInfo:                trInfo,
-		statsHandler:          sh,
-	}
-
-	// If dc is set and matches the stream's compression, use it.  Otherwise, try
-	// to find a matching registered compressor for decomp.
-	if rc := stream.RecvCompress(); s.opts.dc != nil && s.opts.dc.Type() == rc {
-		ss.dc = s.opts.dc
-	} else if rc != "" && rc != encoding.Identity {
-		ss.decomp = encoding.GetCompressor(rc)
-		if ss.decomp == nil {
-			st := status.Newf(codes.Unimplemented, "grpc: Decompressor is not installed for grpc-encoding %q", rc)
-			t.WriteStatus(ss.s, st)
-			return st.Err()
-		}
-	}
-
-	// If cp is set, use it.  Otherwise, attempt to compress the response using
-	// the incoming message compression method.
-	//
-	// NOTE: this needs to be ahead of all handling, https://github.com/grpc/grpc-go/issues/686.
-	if s.opts.cp != nil {
-		ss.cp = s.opts.cp
-		stream.SetSendCompress(s.opts.cp.Type())
-	} else if rc := stream.RecvCompress(); rc != "" && rc != encoding.Identity {
-		// Legacy compressor not specified; attempt to respond with same encoding.
-		ss.comp = encoding.GetCompressor(rc)
-		if ss.comp != nil {
-			stream.SetSendCompress(rc)
-		}
-	}
-
-	if trInfo != nil {
-		trInfo.tr.LazyLog(&trInfo.firstLine, false)
-		defer func() {
-			ss.mu.Lock()
-			if err != nil && err != io.EOF {
-				ss.trInfo.tr.LazyLog(&fmtStringer{"%v", []interface{}{err}}, true)
-				ss.trInfo.tr.SetError()
-			}
-			ss.trInfo.tr.Finish()
-			ss.trInfo.tr = nil
-			ss.mu.Unlock()
-		}()
-	}
-	var appErr error
-	var server interface{}
-	if srv != nil {
-		server = srv.server
-	}
-	if s.opts.streamInt == nil {
-		appErr = sd.Handler(server, ss)
-	} else {
-		info := &StreamServerInfo{
-			FullMethod:     stream.Method(),
-			IsClientStream: sd.ClientStreams,
-			IsServerStream: sd.ServerStreams,
-		}
-		appErr = s.opts.streamInt(server, ss, info, sd.Handler)
-	}
-	if appErr != nil {
-		appStatus, ok := status.FromError(appErr)
-		if !ok {
-			switch err := appErr.(type) {
-			case transport.StreamError:
-				appStatus = status.New(err.Code, err.Desc)
-			default:
-				appStatus = status.New(codes.Unknown, appErr.Error())
-			}
-			appErr = appStatus.Err()
-		}
-		if trInfo != nil {
-			ss.mu.Lock()
-			ss.trInfo.tr.LazyLog(stringer(appStatus.Message()), true)
-			ss.trInfo.tr.SetError()
-			ss.mu.Unlock()
-		}
-		t.WriteStatus(ss.s, appStatus)
-		// TODO: Should we log an error from WriteStatus here and below?
-		return appErr
-	}
-	if trInfo != nil {
-		ss.mu.Lock()
-		ss.trInfo.tr.LazyLog(stringer("OK"), false)
-		ss.mu.Unlock()
-	}
-	return t.WriteStatus(ss.s, status.New(codes.OK, ""))
-}
-
-func (s *Server) handleStream(t transport.ServerTransport, stream *transport.Stream, trInfo *traceInfo) {
-	sm := stream.Method()
-	if sm != "" && sm[0] == '/' {
-		sm = sm[1:]
-	}
-	pos := strings.LastIndex(sm, "/")
-	if pos == -1 {
-		if trInfo != nil {
-			trInfo.tr.LazyLog(&fmtStringer{"Malformed method name %q", []interface{}{sm}}, true)
-			trInfo.tr.SetError()
-		}
-		errDesc := fmt.Sprintf("malformed method name: %q", stream.Method())
-		if err := t.WriteStatus(stream, status.New(codes.ResourceExhausted, errDesc)); err != nil {
-			if trInfo != nil {
-				trInfo.tr.LazyLog(&fmtStringer{"%v", []interface{}{err}}, true)
-				trInfo.tr.SetError()
-			}
-			grpclog.Warningf("grpc: Server.handleStream failed to write status: %v", err)
-		}
-		if trInfo != nil {
-			trInfo.tr.Finish()
-		}
-		return
-	}
-	service := sm[:pos]
-	method := sm[pos+1:]
-	srv, ok := s.m[service]
-	if !ok {
-		if unknownDesc := s.opts.unknownStreamDesc; unknownDesc != nil {
-			s.processStreamingRPC(t, stream, nil, unknownDesc, trInfo)
-			return
-		}
-		if trInfo != nil {
-			trInfo.tr.LazyLog(&fmtStringer{"Unknown service %v", []interface{}{service}}, true)
-			trInfo.tr.SetError()
-		}
-		errDesc := fmt.Sprintf("unknown service %v", service)
-		if err := t.WriteStatus(stream, status.New(codes.Unimplemented, errDesc)); err != nil {
-			if trInfo != nil {
-				trInfo.tr.LazyLog(&fmtStringer{"%v", []interface{}{err}}, true)
-				trInfo.tr.SetError()
-			}
-			grpclog.Warningf("grpc: Server.handleStream failed to write status: %v", err)
-		}
-		if trInfo != nil {
-			trInfo.tr.Finish()
-		}
-		return
-	}
-	// Unary RPC or Streaming RPC?
-	if md, ok := srv.md[method]; ok {
-		s.processUnaryRPC(t, stream, srv, md, trInfo)
-		return
-	}
-	if sd, ok := srv.sd[method]; ok {
-		s.processStreamingRPC(t, stream, srv, sd, trInfo)
-		return
-	}
-	if trInfo != nil {
-		trInfo.tr.LazyLog(&fmtStringer{"Unknown method %v", []interface{}{method}}, true)
-		trInfo.tr.SetError()
-	}
-	if unknownDesc := s.opts.unknownStreamDesc; unknownDesc != nil {
-		s.processStreamingRPC(t, stream, nil, unknownDesc, trInfo)
-		return
-	}
-	errDesc := fmt.Sprintf("unknown method %v", method)
-	if err := t.WriteStatus(stream, status.New(codes.Unimplemented, errDesc)); err != nil {
-		if trInfo != nil {
-			trInfo.tr.LazyLog(&fmtStringer{"%v", []interface{}{err}}, true)
-			trInfo.tr.SetError()
-		}
-		grpclog.Warningf("grpc: Server.handleStream failed to write status: %v", err)
-	}
-	if trInfo != nil {
-		trInfo.tr.Finish()
-	}
-}
-
-// The key to save ServerTransportStream in the context.
-type streamKey struct{}
-
-// NewContextWithServerTransportStream creates a new context from ctx and
-// attaches stream to it.
-//
-// This API is EXPERIMENTAL.
-func NewContextWithServerTransportStream(ctx context.Context, stream ServerTransportStream) context.Context {
-	return context.WithValue(ctx, streamKey{}, stream)
-}
-
-// ServerTransportStream is a minimal interface that a transport stream must
-// implement. This can be used to mock an actual transport stream for tests of
-// handler code that use, for example, grpc.SetHeader (which requires some
-// stream to be in context).
-//
-// See also NewContextWithServerTransportStream.
-//
-// This API is EXPERIMENTAL.
-type ServerTransportStream interface {
-	Method() string
-	SetHeader(md metadata.MD) error
-	SendHeader(md metadata.MD) error
-	SetTrailer(md metadata.MD) error
-}
-
-// ServerTransportStreamFromContext returns the ServerTransportStream saved in
-// ctx. Returns nil if the given context has no stream associated with it
-// (which implies it is not an RPC invocation context).
-//
-// This API is EXPERIMENTAL.
-func ServerTransportStreamFromContext(ctx context.Context) ServerTransportStream {
-	s, _ := ctx.Value(streamKey{}).(ServerTransportStream)
-	return s
-}
-
-// Stop stops the gRPC server. It immediately closes all open
-// connections and listeners.
-// It cancels all active RPCs on the server side and the corresponding
-// pending RPCs on the client side will get notified by connection
-// errors.
-func (s *Server) Stop() {
-	s.quitOnce.Do(func() {
-		close(s.quit)
-	})
-
-	defer func() {
-		s.serveWG.Wait()
-		s.doneOnce.Do(func() {
-			close(s.done)
-		})
-	}()
-
-	s.channelzRemoveOnce.Do(func() {
-		if channelz.IsOn() {
-			channelz.RemoveEntry(s.channelzID)
-		}
-	})
-
-	s.mu.Lock()
-	listeners := s.lis
-	s.lis = nil
-	st := s.conns
-	s.conns = nil
-	// interrupt GracefulStop if Stop and GracefulStop are called concurrently.
-	s.cv.Broadcast()
-	s.mu.Unlock()
-
-	for lis := range listeners {
-		lis.Close()
-	}
-	for c := range st {
-		c.Close()
-	}
-
-	s.mu.Lock()
-	if s.events != nil {
-		s.events.Finish()
-		s.events = nil
-	}
-	s.mu.Unlock()
-}
-
-// GracefulStop stops the gRPC server gracefully. It stops the server from
-// accepting new connections and RPCs and blocks until all the pending RPCs are
-// finished.
-func (s *Server) GracefulStop() {
-	s.quitOnce.Do(func() {
-		close(s.quit)
-	})
-
-	defer func() {
-		s.doneOnce.Do(func() {
-			close(s.done)
-		})
-	}()
-
-	s.channelzRemoveOnce.Do(func() {
-		if channelz.IsOn() {
-			channelz.RemoveEntry(s.channelzID)
-		}
-	})
-	s.mu.Lock()
-	if s.conns == nil {
-		s.mu.Unlock()
-		return
-	}
-
-	for lis := range s.lis {
-		lis.Close()
-	}
-	s.lis = nil
-	if !s.drain {
-		for c := range s.conns {
-			c.(transport.ServerTransport).Drain()
-		}
-		s.drain = true
-	}
-
-	// Wait for serving threads to be ready to exit.  Only then can we be sure no
-	// new conns will be created.
-	s.mu.Unlock()
-	s.serveWG.Wait()
-	s.mu.Lock()
-
-	for len(s.conns) != 0 {
-		s.cv.Wait()
-	}
-	s.conns = nil
-	if s.events != nil {
-		s.events.Finish()
-		s.events = nil
-	}
-	s.mu.Unlock()
-}
-
-func init() {
-	internal.TestingUseHandlerImpl = func(arg interface{}) {
-		arg.(*Server).opts.useHandlerImpl = true
-	}
-}
-
-// contentSubtype must be lowercase
-// cannot return nil
-func (s *Server) getCodec(contentSubtype string) baseCodec {
-	if s.opts.codec != nil {
-		return s.opts.codec
-	}
-	if contentSubtype == "" {
-		return encoding.GetCodec(proto.Name)
-	}
-	codec := encoding.GetCodec(contentSubtype)
-	if codec == nil {
-		return encoding.GetCodec(proto.Name)
-	}
-	return codec
-}
-
-// SetHeader sets the header metadata.
-// When called multiple times, all the provided metadata will be merged.
-// All the metadata will be sent out when one of the following happens:
-//  - grpc.SendHeader() is called;
-//  - The first response is sent out;
-//  - An RPC status is sent out (error or success).
-func SetHeader(ctx context.Context, md metadata.MD) error {
-	if md.Len() == 0 {
-		return nil
-	}
-	stream := ServerTransportStreamFromContext(ctx)
-	if stream == nil {
-		return status.Errorf(codes.Internal, "grpc: failed to fetch the stream from the context %v", ctx)
-	}
-	return stream.SetHeader(md)
-}
-
-// SendHeader sends header metadata. It may be called at most once.
-// The provided md and headers set by SetHeader() will be sent.
-func SendHeader(ctx context.Context, md metadata.MD) error {
-	stream := ServerTransportStreamFromContext(ctx)
-	if stream == nil {
-		return status.Errorf(codes.Internal, "grpc: failed to fetch the stream from the context %v", ctx)
-	}
-	if err := stream.SendHeader(md); err != nil {
-		return toRPCErr(err)
-	}
-	return nil
-}
-
-// SetTrailer sets the trailer metadata that will be sent when an RPC returns.
-// When called more than once, all the provided metadata will be merged.
-func SetTrailer(ctx context.Context, md metadata.MD) error {
-	if md.Len() == 0 {
-		return nil
-	}
-	stream := ServerTransportStreamFromContext(ctx)
-	if stream == nil {
-		return status.Errorf(codes.Internal, "grpc: failed to fetch the stream from the context %v", ctx)
-	}
-	return stream.SetTrailer(md)
-}
-
-// Method returns the method string for the server context.  The returned
-// string is in the format of "/service/method".
-func Method(ctx context.Context) (string, bool) {
-	s := ServerTransportStreamFromContext(ctx)
-	if s == nil {
-		return "", false
-	}
-	return s.Method(), true
-}
diff --git a/vendor/google.golang.org/grpc/service_config.go b/vendor/google.golang.org/grpc/service_config.go
deleted file mode 100644
index 015631d8d..000000000
--- a/vendor/google.golang.org/grpc/service_config.go
+++ /dev/null
@@ -1,233 +0,0 @@
-/*
- *
- * Copyright 2017 gRPC authors.
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *     http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- *
- */
-
-package grpc
-
-import (
-	"encoding/json"
-	"fmt"
-	"strconv"
-	"strings"
-	"time"
-
-	"google.golang.org/grpc/grpclog"
-)
-
-const maxInt = int(^uint(0) >> 1)
-
-// MethodConfig defines the configuration recommended by the service providers for a
-// particular method.
-//
-// Deprecated: Users should not use this struct. Service config should be received
-// through name resolver, as specified here
-// https://github.com/grpc/grpc/blob/master/doc/service_config.md
-type MethodConfig struct {
-	// WaitForReady indicates whether RPCs sent to this method should wait until
-	// the connection is ready by default (!failfast). The value specified via the
-	// gRPC client API will override the value set here.
-	WaitForReady *bool
-	// Timeout is the default timeout for RPCs sent to this method. The actual
-	// deadline used will be the minimum of the value specified here and the value
-	// set by the application via the gRPC client API.  If either one is not set,
-	// then the other will be used.  If neither is set, then the RPC has no deadline.
-	Timeout *time.Duration
-	// MaxReqSize is the maximum allowed payload size for an individual request in a
-	// stream (client->server) in bytes. The size which is measured is the serialized
-	// payload after per-message compression (but before stream compression) in bytes.
-	// The actual value used is the minimum of the value specified here and the value set
-	// by the application via the gRPC client API. If either one is not set, then the other
-	// will be used.  If neither is set, then the built-in default is used.
-	MaxReqSize *int
-	// MaxRespSize is the maximum allowed payload size for an individual response in a
-	// stream (server->client) in bytes.
-	MaxRespSize *int
-}
-
-// ServiceConfig is provided by the service provider and contains parameters for how
-// clients that connect to the service should behave.
-//
-// Deprecated: Users should not use this struct. Service config should be received
-// through name resolver, as specified here
-// https://github.com/grpc/grpc/blob/master/doc/service_config.md
-type ServiceConfig struct {
-	// LB is the load balancer the service providers recommends. The balancer specified
-	// via grpc.WithBalancer will override this.
-	LB *string
-	// Methods contains a map for the methods in this service.
-	// If there is an exact match for a method (i.e. /service/method) in the map, use the corresponding MethodConfig.
-	// If there's no exact match, look for the default config for the service (/service/) and use the corresponding MethodConfig if it exists.
-	// Otherwise, the method has no MethodConfig to use.
-	Methods map[string]MethodConfig
-
-	stickinessMetadataKey *string
-}
-
-func parseDuration(s *string) (*time.Duration, error) {
-	if s == nil {
-		return nil, nil
-	}
-	if !strings.HasSuffix(*s, "s") {
-		return nil, fmt.Errorf("malformed duration %q", *s)
-	}
-	ss := strings.SplitN((*s)[:len(*s)-1], ".", 3)
-	if len(ss) > 2 {
-		return nil, fmt.Errorf("malformed duration %q", *s)
-	}
-	// hasDigits is set if either the whole or fractional part of the number is
-	// present, since both are optional but one is required.
-	hasDigits := false
-	var d time.Duration
-	if len(ss[0]) > 0 {
-		i, err := strconv.ParseInt(ss[0], 10, 32)
-		if err != nil {
-			return nil, fmt.Errorf("malformed duration %q: %v", *s, err)
-		}
-		d = time.Duration(i) * time.Second
-		hasDigits = true
-	}
-	if len(ss) == 2 && len(ss[1]) > 0 {
-		if len(ss[1]) > 9 {
-			return nil, fmt.Errorf("malformed duration %q", *s)
-		}
-		f, err := strconv.ParseInt(ss[1], 10, 64)
-		if err != nil {
-			return nil, fmt.Errorf("malformed duration %q: %v", *s, err)
-		}
-		for i := 9; i > len(ss[1]); i-- {
-			f *= 10
-		}
-		d += time.Duration(f)
-		hasDigits = true
-	}
-	if !hasDigits {
-		return nil, fmt.Errorf("malformed duration %q", *s)
-	}
-
-	return &d, nil
-}
-
-type jsonName struct {
-	Service *string
-	Method  *string
-}
-
-func (j jsonName) generatePath() (string, bool) {
-	if j.Service == nil {
-		return "", false
-	}
-	res := "/" + *j.Service + "/"
-	if j.Method != nil {
-		res += *j.Method
-	}
-	return res, true
-}
-
-// TODO(lyuxuan): delete this struct after cleaning up old service config implementation.
-type jsonMC struct {
-	Name                    *[]jsonName
-	WaitForReady            *bool
-	Timeout                 *string
-	MaxRequestMessageBytes  *int64
-	MaxResponseMessageBytes *int64
-}
-
-// TODO(lyuxuan): delete this struct after cleaning up old service config implementation.
-type jsonSC struct {
-	LoadBalancingPolicy   *string
-	StickinessMetadataKey *string
-	MethodConfig          *[]jsonMC
-}
-
-func parseServiceConfig(js string) (ServiceConfig, error) {
-	var rsc jsonSC
-	err := json.Unmarshal([]byte(js), &rsc)
-	if err != nil {
-		grpclog.Warningf("grpc: parseServiceConfig error unmarshaling %s due to %v", js, err)
-		return ServiceConfig{}, err
-	}
-	sc := ServiceConfig{
-		LB:      rsc.LoadBalancingPolicy,
-		Methods: make(map[string]MethodConfig),
-
-		stickinessMetadataKey: rsc.StickinessMetadataKey,
-	}
-	if rsc.MethodConfig == nil {
-		return sc, nil
-	}
-
-	for _, m := range *rsc.MethodConfig {
-		if m.Name == nil {
-			continue
-		}
-		d, err := parseDuration(m.Timeout)
-		if err != nil {
-			grpclog.Warningf("grpc: parseServiceConfig error unmarshaling %s due to %v", js, err)
-			return ServiceConfig{}, err
-		}
-
-		mc := MethodConfig{
-			WaitForReady: m.WaitForReady,
-			Timeout:      d,
-		}
-		if m.MaxRequestMessageBytes != nil {
-			if *m.MaxRequestMessageBytes > int64(maxInt) {
-				mc.MaxReqSize = newInt(maxInt)
-			} else {
-				mc.MaxReqSize = newInt(int(*m.MaxRequestMessageBytes))
-			}
-		}
-		if m.MaxResponseMessageBytes != nil {
-			if *m.MaxResponseMessageBytes > int64(maxInt) {
-				mc.MaxRespSize = newInt(maxInt)
-			} else {
-				mc.MaxRespSize = newInt(int(*m.MaxResponseMessageBytes))
-			}
-		}
-		for _, n := range *m.Name {
-			if path, valid := n.generatePath(); valid {
-				sc.Methods[path] = mc
-			}
-		}
-	}
-
-	return sc, nil
-}
-
-func min(a, b *int) *int {
-	if *a < *b {
-		return a
-	}
-	return b
-}
-
-func getMaxSize(mcMax, doptMax *int, defaultVal int) *int {
-	if mcMax == nil && doptMax == nil {
-		return &defaultVal
-	}
-	if mcMax != nil && doptMax != nil {
-		return min(mcMax, doptMax)
-	}
-	if mcMax != nil {
-		return mcMax
-	}
-	return doptMax
-}
-
-func newInt(b int) *int {
-	return &b
-}
diff --git a/vendor/google.golang.org/grpc/stats/handlers.go b/vendor/google.golang.org/grpc/stats/handlers.go
deleted file mode 100644
index 05b384c69..000000000
--- a/vendor/google.golang.org/grpc/stats/handlers.go
+++ /dev/null
@@ -1,64 +0,0 @@
-/*
- *
- * Copyright 2016 gRPC authors.
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *     http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- *
- */
-
-package stats
-
-import (
-	"net"
-
-	"golang.org/x/net/context"
-)
-
-// ConnTagInfo defines the relevant information needed by connection context tagger.
-type ConnTagInfo struct {
-	// RemoteAddr is the remote address of the corresponding connection.
-	RemoteAddr net.Addr
-	// LocalAddr is the local address of the corresponding connection.
-	LocalAddr net.Addr
-}
-
-// RPCTagInfo defines the relevant information needed by RPC context tagger.
-type RPCTagInfo struct {
-	// FullMethodName is the RPC method in the format of /package.service/method.
-	FullMethodName string
-	// FailFast indicates if this RPC is failfast.
-	// This field is only valid on client side, it's always false on server side.
-	FailFast bool
-}
-
-// Handler defines the interface for the related stats handling (e.g., RPCs, connections).
-type Handler interface {
-	// TagRPC can attach some information to the given context.
-	// The context used for the rest lifetime of the RPC will be derived from
-	// the returned context.
-	TagRPC(context.Context, *RPCTagInfo) context.Context
-	// HandleRPC processes the RPC stats.
-	HandleRPC(context.Context, RPCStats)
-
-	// TagConn can attach some information to the given context.
-	// The returned context will be used for stats handling.
-	// For conn stats handling, the context used in HandleConn for this
-	// connection will be derived from the context returned.
-	// For RPC stats handling,
-	//  - On server side, the context used in HandleRPC for all RPCs on this
-	// connection will be derived from the context returned.
-	//  - On client side, the context is not derived from the context returned.
-	TagConn(context.Context, *ConnTagInfo) context.Context
-	// HandleConn processes the Conn stats.
-	HandleConn(context.Context, ConnStats)
-}
diff --git a/vendor/google.golang.org/grpc/stats/stats.go b/vendor/google.golang.org/grpc/stats/stats.go
deleted file mode 100644
index 3f13190a0..000000000
--- a/vendor/google.golang.org/grpc/stats/stats.go
+++ /dev/null
@@ -1,296 +0,0 @@
-/*
- *
- * Copyright 2016 gRPC authors.
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *     http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- *
- */
-
-//go:generate protoc --go_out=plugins=grpc:. grpc_testing/test.proto
-
-// Package stats is for collecting and reporting various network and RPC stats.
-// This package is for monitoring purpose only. All fields are read-only.
-// All APIs are experimental.
-package stats // import "google.golang.org/grpc/stats"
-
-import (
-	"net"
-	"time"
-
-	"golang.org/x/net/context"
-)
-
-// RPCStats contains stats information about RPCs.
-type RPCStats interface {
-	isRPCStats()
-	// IsClient returns true if this RPCStats is from client side.
-	IsClient() bool
-}
-
-// Begin contains stats when an RPC begins.
-// FailFast is only valid if this Begin is from client side.
-type Begin struct {
-	// Client is true if this Begin is from client side.
-	Client bool
-	// BeginTime is the time when the RPC begins.
-	BeginTime time.Time
-	// FailFast indicates if this RPC is failfast.
-	FailFast bool
-}
-
-// IsClient indicates if the stats information is from client side.
-func (s *Begin) IsClient() bool { return s.Client }
-
-func (s *Begin) isRPCStats() {}
-
-// InPayload contains the information for an incoming payload.
-type InPayload struct {
-	// Client is true if this InPayload is from client side.
-	Client bool
-	// Payload is the payload with original type.
-	Payload interface{}
-	// Data is the serialized message payload.
-	Data []byte
-	// Length is the length of uncompressed data.
-	Length int
-	// WireLength is the length of data on wire (compressed, signed, encrypted).
-	WireLength int
-	// RecvTime is the time when the payload is received.
-	RecvTime time.Time
-}
-
-// IsClient indicates if the stats information is from client side.
-func (s *InPayload) IsClient() bool { return s.Client }
-
-func (s *InPayload) isRPCStats() {}
-
-// InHeader contains stats when a header is received.
-type InHeader struct {
-	// Client is true if this InHeader is from client side.
-	Client bool
-	// WireLength is the wire length of header.
-	WireLength int
-
-	// The following fields are valid only if Client is false.
-	// FullMethod is the full RPC method string, i.e., /package.service/method.
-	FullMethod string
-	// RemoteAddr is the remote address of the corresponding connection.
-	RemoteAddr net.Addr
-	// LocalAddr is the local address of the corresponding connection.
-	LocalAddr net.Addr
-	// Compression is the compression algorithm used for the RPC.
-	Compression string
-}
-
-// IsClient indicates if the stats information is from client side.
-func (s *InHeader) IsClient() bool { return s.Client }
-
-func (s *InHeader) isRPCStats() {}
-
-// InTrailer contains stats when a trailer is received.
-type InTrailer struct {
-	// Client is true if this InTrailer is from client side.
-	Client bool
-	// WireLength is the wire length of trailer.
-	WireLength int
-}
-
-// IsClient indicates if the stats information is from client side.
-func (s *InTrailer) IsClient() bool { return s.Client }
-
-func (s *InTrailer) isRPCStats() {}
-
-// OutPayload contains the information for an outgoing payload.
-type OutPayload struct {
-	// Client is true if this OutPayload is from client side.
-	Client bool
-	// Payload is the payload with original type.
-	Payload interface{}
-	// Data is the serialized message payload.
-	Data []byte
-	// Length is the length of uncompressed data.
-	Length int
-	// WireLength is the length of data on wire (compressed, signed, encrypted).
-	WireLength int
-	// SentTime is the time when the payload is sent.
-	SentTime time.Time
-}
-
-// IsClient indicates if this stats information is from client side.
-func (s *OutPayload) IsClient() bool { return s.Client }
-
-func (s *OutPayload) isRPCStats() {}
-
-// OutHeader contains stats when a header is sent.
-type OutHeader struct {
-	// Client is true if this OutHeader is from client side.
-	Client bool
-
-	// The following fields are valid only if Client is true.
-	// FullMethod is the full RPC method string, i.e., /package.service/method.
-	FullMethod string
-	// RemoteAddr is the remote address of the corresponding connection.
-	RemoteAddr net.Addr
-	// LocalAddr is the local address of the corresponding connection.
-	LocalAddr net.Addr
-	// Compression is the compression algorithm used for the RPC.
-	Compression string
-}
-
-// IsClient indicates if this stats information is from client side.
-func (s *OutHeader) IsClient() bool { return s.Client }
-
-func (s *OutHeader) isRPCStats() {}
-
-// OutTrailer contains stats when a trailer is sent.
-type OutTrailer struct {
-	// Client is true if this OutTrailer is from client side.
-	Client bool
-	// WireLength is the wire length of trailer.
-	WireLength int
-}
-
-// IsClient indicates if this stats information is from client side.
-func (s *OutTrailer) IsClient() bool { return s.Client }
-
-func (s *OutTrailer) isRPCStats() {}
-
-// End contains stats when an RPC ends.
-type End struct {
-	// Client is true if this End is from client side.
-	Client bool
-	// BeginTime is the time when the RPC began.
-	BeginTime time.Time
-	// EndTime is the time when the RPC ends.
-	EndTime time.Time
-	// Error is the error the RPC ended with. It is an error generated from
-	// status.Status and can be converted back to status.Status using
-	// status.FromError if non-nil.
-	Error error
-}
-
-// IsClient indicates if this is from client side.
-func (s *End) IsClient() bool { return s.Client }
-
-func (s *End) isRPCStats() {}
-
-// ConnStats contains stats information about connections.
-type ConnStats interface {
-	isConnStats()
-	// IsClient returns true if this ConnStats is from client side.
-	IsClient() bool
-}
-
-// ConnBegin contains the stats of a connection when it is established.
-type ConnBegin struct {
-	// Client is true if this ConnBegin is from client side.
-	Client bool
-}
-
-// IsClient indicates if this is from client side.
-func (s *ConnBegin) IsClient() bool { return s.Client }
-
-func (s *ConnBegin) isConnStats() {}
-
-// ConnEnd contains the stats of a connection when it ends.
-type ConnEnd struct {
-	// Client is true if this ConnEnd is from client side.
-	Client bool
-}
-
-// IsClient indicates if this is from client side.
-func (s *ConnEnd) IsClient() bool { return s.Client }
-
-func (s *ConnEnd) isConnStats() {}
-
-type incomingTagsKey struct{}
-type outgoingTagsKey struct{}
-
-// SetTags attaches stats tagging data to the context, which will be sent in
-// the outgoing RPC with the header grpc-tags-bin.  Subsequent calls to
-// SetTags will overwrite the values from earlier calls.
-//
-// NOTE: this is provided only for backward compatibility with existing clients
-// and will likely be removed in an upcoming release.  New uses should transmit
-// this type of data using metadata with a different, non-reserved (i.e. does
-// not begin with "grpc-") header name.
-func SetTags(ctx context.Context, b []byte) context.Context {
-	return context.WithValue(ctx, outgoingTagsKey{}, b)
-}
-
-// Tags returns the tags from the context for the inbound RPC.
-//
-// NOTE: this is provided only for backward compatibility with existing clients
-// and will likely be removed in an upcoming release.  New uses should transmit
-// this type of data using metadata with a different, non-reserved (i.e. does
-// not begin with "grpc-") header name.
-func Tags(ctx context.Context) []byte {
-	b, _ := ctx.Value(incomingTagsKey{}).([]byte)
-	return b
-}
-
-// SetIncomingTags attaches stats tagging data to the context, to be read by
-// the application (not sent in outgoing RPCs).
-//
-// This is intended for gRPC-internal use ONLY.
-func SetIncomingTags(ctx context.Context, b []byte) context.Context {
-	return context.WithValue(ctx, incomingTagsKey{}, b)
-}
-
-// OutgoingTags returns the tags from the context for the outbound RPC.
-//
-// This is intended for gRPC-internal use ONLY.
-func OutgoingTags(ctx context.Context) []byte {
-	b, _ := ctx.Value(outgoingTagsKey{}).([]byte)
-	return b
-}
-
-type incomingTraceKey struct{}
-type outgoingTraceKey struct{}
-
-// SetTrace attaches stats tagging data to the context, which will be sent in
-// the outgoing RPC with the header grpc-trace-bin.  Subsequent calls to
-// SetTrace will overwrite the values from earlier calls.
-//
-// NOTE: this is provided only for backward compatibility with existing clients
-// and will likely be removed in an upcoming release.  New uses should transmit
-// this type of data using metadata with a different, non-reserved (i.e. does
-// not begin with "grpc-") header name.
-func SetTrace(ctx context.Context, b []byte) context.Context {
-	return context.WithValue(ctx, outgoingTraceKey{}, b)
-}
-
-// Trace returns the trace from the context for the inbound RPC.
-//
-// NOTE: this is provided only for backward compatibility with existing clients
-// and will likely be removed in an upcoming release.  New uses should transmit
-// this type of data using metadata with a different, non-reserved (i.e. does
-// not begin with "grpc-") header name.
-func Trace(ctx context.Context) []byte {
-	b, _ := ctx.Value(incomingTraceKey{}).([]byte)
-	return b
-}
-
-// SetIncomingTrace attaches stats tagging data to the context, to be read by
-// the application (not sent in outgoing RPCs).  It is intended for
-// gRPC-internal use.
-func SetIncomingTrace(ctx context.Context, b []byte) context.Context {
-	return context.WithValue(ctx, incomingTraceKey{}, b)
-}
-
-// OutgoingTrace returns the trace from the context for the outbound RPC.  It is
-// intended for gRPC-internal use.
-func OutgoingTrace(ctx context.Context) []byte {
-	b, _ := ctx.Value(outgoingTraceKey{}).([]byte)
-	return b
-}
diff --git a/vendor/google.golang.org/grpc/status/go16.go b/vendor/google.golang.org/grpc/status/go16.go
deleted file mode 100644
index e59b53e82..000000000
--- a/vendor/google.golang.org/grpc/status/go16.go
+++ /dev/null
@@ -1,42 +0,0 @@
-// +build go1.6,!go1.7
-
-/*
- *
- * Copyright 2018 gRPC authors.
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *     http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- *
- */
-
-package status
-
-import (
-	"golang.org/x/net/context"
-	"google.golang.org/grpc/codes"
-)
-
-// FromContextError converts a context error into a Status.  It returns a
-// Status with codes.OK if err is nil, or a Status with codes.Unknown if err is
-// non-nil and not a context error.
-func FromContextError(err error) *Status {
-	switch err {
-	case nil:
-		return New(codes.OK, "")
-	case context.DeadlineExceeded:
-		return New(codes.DeadlineExceeded, err.Error())
-	case context.Canceled:
-		return New(codes.Canceled, err.Error())
-	default:
-		return New(codes.Unknown, err.Error())
-	}
-}
diff --git a/vendor/google.golang.org/grpc/status/go17.go b/vendor/google.golang.org/grpc/status/go17.go
deleted file mode 100644
index 090215149..000000000
--- a/vendor/google.golang.org/grpc/status/go17.go
+++ /dev/null
@@ -1,44 +0,0 @@
-// +build go1.7
-
-/*
- *
- * Copyright 2018 gRPC authors.
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *     http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- *
- */
-
-package status
-
-import (
-	"context"
-
-	netctx "golang.org/x/net/context"
-	"google.golang.org/grpc/codes"
-)
-
-// FromContextError converts a context error into a Status.  It returns a
-// Status with codes.OK if err is nil, or a Status with codes.Unknown if err is
-// non-nil and not a context error.
-func FromContextError(err error) *Status {
-	switch err {
-	case nil:
-		return New(codes.OK, "")
-	case context.DeadlineExceeded, netctx.DeadlineExceeded:
-		return New(codes.DeadlineExceeded, err.Error())
-	case context.Canceled, netctx.Canceled:
-		return New(codes.Canceled, err.Error())
-	default:
-		return New(codes.Unknown, err.Error())
-	}
-}
diff --git a/vendor/google.golang.org/grpc/status/status.go b/vendor/google.golang.org/grpc/status/status.go
deleted file mode 100644
index 9c61b0945..000000000
--- a/vendor/google.golang.org/grpc/status/status.go
+++ /dev/null
@@ -1,189 +0,0 @@
-/*
- *
- * Copyright 2017 gRPC authors.
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *     http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- *
- */
-
-// Package status implements errors returned by gRPC.  These errors are
-// serialized and transmitted on the wire between server and client, and allow
-// for additional data to be transmitted via the Details field in the status
-// proto.  gRPC service handlers should return an error created by this
-// package, and gRPC clients should expect a corresponding error to be
-// returned from the RPC call.
-//
-// This package upholds the invariants that a non-nil error may not
-// contain an OK code, and an OK code must result in a nil error.
-package status
-
-import (
-	"errors"
-	"fmt"
-
-	"github.com/golang/protobuf/proto"
-	"github.com/golang/protobuf/ptypes"
-	spb "google.golang.org/genproto/googleapis/rpc/status"
-	"google.golang.org/grpc/codes"
-)
-
-// statusError is an alias of a status proto.  It implements error and Status,
-// and a nil statusError should never be returned by this package.
-type statusError spb.Status
-
-func (se *statusError) Error() string {
-	p := (*spb.Status)(se)
-	return fmt.Sprintf("rpc error: code = %s desc = %s", codes.Code(p.GetCode()), p.GetMessage())
-}
-
-func (se *statusError) GRPCStatus() *Status {
-	return &Status{s: (*spb.Status)(se)}
-}
-
-// Status represents an RPC status code, message, and details.  It is immutable
-// and should be created with New, Newf, or FromProto.
-type Status struct {
-	s *spb.Status
-}
-
-// Code returns the status code contained in s.
-func (s *Status) Code() codes.Code {
-	if s == nil || s.s == nil {
-		return codes.OK
-	}
-	return codes.Code(s.s.Code)
-}
-
-// Message returns the message contained in s.
-func (s *Status) Message() string {
-	if s == nil || s.s == nil {
-		return ""
-	}
-	return s.s.Message
-}
-
-// Proto returns s's status as an spb.Status proto message.
-func (s *Status) Proto() *spb.Status {
-	if s == nil {
-		return nil
-	}
-	return proto.Clone(s.s).(*spb.Status)
-}
-
-// Err returns an immutable error representing s; returns nil if s.Code() is
-// OK.
-func (s *Status) Err() error {
-	if s.Code() == codes.OK {
-		return nil
-	}
-	return (*statusError)(s.s)
-}
-
-// New returns a Status representing c and msg.
-func New(c codes.Code, msg string) *Status {
-	return &Status{s: &spb.Status{Code: int32(c), Message: msg}}
-}
-
-// Newf returns New(c, fmt.Sprintf(format, a...)).
-func Newf(c codes.Code, format string, a ...interface{}) *Status {
-	return New(c, fmt.Sprintf(format, a...))
-}
-
-// Error returns an error representing c and msg.  If c is OK, returns nil.
-func Error(c codes.Code, msg string) error {
-	return New(c, msg).Err()
-}
-
-// Errorf returns Error(c, fmt.Sprintf(format, a...)).
-func Errorf(c codes.Code, format string, a ...interface{}) error {
-	return Error(c, fmt.Sprintf(format, a...))
-}
-
-// ErrorProto returns an error representing s.  If s.Code is OK, returns nil.
-func ErrorProto(s *spb.Status) error {
-	return FromProto(s).Err()
-}
-
-// FromProto returns a Status representing s.
-func FromProto(s *spb.Status) *Status {
-	return &Status{s: proto.Clone(s).(*spb.Status)}
-}
-
-// FromError returns a Status representing err if it was produced from this
-// package or has a method `GRPCStatus() *Status`. Otherwise, ok is false and a
-// Status is returned with codes.Unknown and the original error message.
-func FromError(err error) (s *Status, ok bool) {
-	if err == nil {
-		return &Status{s: &spb.Status{Code: int32(codes.OK)}}, true
-	}
-	if se, ok := err.(interface{ GRPCStatus() *Status }); ok {
-		return se.GRPCStatus(), true
-	}
-	return New(codes.Unknown, err.Error()), false
-}
-
-// Convert is a convenience function which removes the need to handle the
-// boolean return value from FromError.
-func Convert(err error) *Status {
-	s, _ := FromError(err)
-	return s
-}
-
-// WithDetails returns a new status with the provided details messages appended to the status.
-// If any errors are encountered, it returns nil and the first error encountered.
-func (s *Status) WithDetails(details ...proto.Message) (*Status, error) {
-	if s.Code() == codes.OK {
-		return nil, errors.New("no error details for status with code OK")
-	}
-	// s.Code() != OK implies that s.Proto() != nil.
-	p := s.Proto()
-	for _, detail := range details {
-		any, err := ptypes.MarshalAny(detail)
-		if err != nil {
-			return nil, err
-		}
-		p.Details = append(p.Details, any)
-	}
-	return &Status{s: p}, nil
-}
-
-// Details returns a slice of details messages attached to the status.
-// If a detail cannot be decoded, the error is returned in place of the detail.
-func (s *Status) Details() []interface{} {
-	if s == nil || s.s == nil {
-		return nil
-	}
-	details := make([]interface{}, 0, len(s.s.Details))
-	for _, any := range s.s.Details {
-		detail := &ptypes.DynamicAny{}
-		if err := ptypes.UnmarshalAny(any, detail); err != nil {
-			details = append(details, err)
-			continue
-		}
-		details = append(details, detail.Message)
-	}
-	return details
-}
-
-// Code returns the Code of the error if it is a Status error, codes.OK if err
-// is nil, or codes.Unknown otherwise.
-func Code(err error) codes.Code {
-	// Don't use FromError to avoid allocation of OK status.
-	if err == nil {
-		return codes.OK
-	}
-	if se, ok := err.(interface{ GRPCStatus() *Status }); ok {
-		return se.GRPCStatus().Code()
-	}
-	return codes.Unknown
-}
diff --git a/vendor/google.golang.org/grpc/stickiness_linkedmap.go b/vendor/google.golang.org/grpc/stickiness_linkedmap.go
deleted file mode 100644
index 1c726af16..000000000
--- a/vendor/google.golang.org/grpc/stickiness_linkedmap.go
+++ /dev/null
@@ -1,97 +0,0 @@
-/*
- *
- * Copyright 2018 gRPC authors.
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *     http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- *
- */
-
-package grpc
-
-import (
-	"container/list"
-)
-
-type linkedMapKVPair struct {
-	key   string
-	value *stickyStoreEntry
-}
-
-// linkedMap is an implementation of a map that supports removing the oldest
-// entry.
-//
-// linkedMap is NOT thread safe.
-//
-// It's for use of stickiness only!
-type linkedMap struct {
-	m map[string]*list.Element
-	l *list.List // Head of the list is the oldest element.
-}
-
-// newLinkedMap returns a new LinkedMap.
-func newLinkedMap() *linkedMap {
-	return &linkedMap{
-		m: make(map[string]*list.Element),
-		l: list.New(),
-	}
-}
-
-// put adds entry (key, value) to the map. Existing key will be overridden.
-func (m *linkedMap) put(key string, value *stickyStoreEntry) {
-	if oldE, ok := m.m[key]; ok {
-		// Remove existing entry.
-		m.l.Remove(oldE)
-	}
-	e := m.l.PushBack(&linkedMapKVPair{key: key, value: value})
-	m.m[key] = e
-}
-
-// get returns the value of the given key.
-func (m *linkedMap) get(key string) (*stickyStoreEntry, bool) {
-	e, ok := m.m[key]
-	if !ok {
-		return nil, false
-	}
-	m.l.MoveToBack(e)
-	return e.Value.(*linkedMapKVPair).value, true
-}
-
-// remove removes key from the map, and returns the value. The map is not
-// modified if key is not in the map.
-func (m *linkedMap) remove(key string) (*stickyStoreEntry, bool) {
-	e, ok := m.m[key]
-	if !ok {
-		return nil, false
-	}
-	delete(m.m, key)
-	m.l.Remove(e)
-	return e.Value.(*linkedMapKVPair).value, true
-}
-
-// len returns the len of the map.
-func (m *linkedMap) len() int {
-	return len(m.m)
-}
-
-// clear removes all elements from the map.
-func (m *linkedMap) clear() {
-	m.m = make(map[string]*list.Element)
-	m.l = list.New()
-}
-
-// removeOldest removes the oldest key from the map.
-func (m *linkedMap) removeOldest() {
-	e := m.l.Front()
-	m.l.Remove(e)
-	delete(m.m, e.Value.(*linkedMapKVPair).key)
-}
diff --git a/vendor/google.golang.org/grpc/stream.go b/vendor/google.golang.org/grpc/stream.go
deleted file mode 100644
index 152d9eccd..000000000
--- a/vendor/google.golang.org/grpc/stream.go
+++ /dev/null
@@ -1,779 +0,0 @@
-/*
- *
- * Copyright 2014 gRPC authors.
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *     http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- *
- */
-
-package grpc
-
-import (
-	"errors"
-	"io"
-	"sync"
-	"time"
-
-	"golang.org/x/net/context"
-	"golang.org/x/net/trace"
-	"google.golang.org/grpc/balancer"
-	"google.golang.org/grpc/codes"
-	"google.golang.org/grpc/encoding"
-	"google.golang.org/grpc/internal/channelz"
-	"google.golang.org/grpc/metadata"
-	"google.golang.org/grpc/stats"
-	"google.golang.org/grpc/status"
-	"google.golang.org/grpc/transport"
-)
-
-// StreamHandler defines the handler called by gRPC server to complete the
-// execution of a streaming RPC. If a StreamHandler returns an error, it
-// should be produced by the status package, or else gRPC will use
-// codes.Unknown as the status code and err.Error() as the status message
-// of the RPC.
-type StreamHandler func(srv interface{}, stream ServerStream) error
-
-// StreamDesc represents a streaming RPC service's method specification.
-type StreamDesc struct {
-	StreamName string
-	Handler    StreamHandler
-
-	// At least one of these is true.
-	ServerStreams bool
-	ClientStreams bool
-}
-
-// Stream defines the common interface a client or server stream has to satisfy.
-//
-// All errors returned from Stream are compatible with the status package.
-type Stream interface {
-	// Context returns the context for this stream.
-	Context() context.Context
-	// SendMsg blocks until it sends m, the stream is done or the stream
-	// breaks.
-	// On error, it aborts the stream and returns an RPC status on client
-	// side. On server side, it simply returns the error to the caller.
-	// SendMsg is called by generated code. Also Users can call SendMsg
-	// directly when it is really needed in their use cases.
-	// It's safe to have a goroutine calling SendMsg and another goroutine calling
-	// recvMsg on the same stream at the same time.
-	// But it is not safe to call SendMsg on the same stream in different goroutines.
-	SendMsg(m interface{}) error
-	// RecvMsg blocks until it receives a message or the stream is
-	// done. On client side, it returns io.EOF when the stream is done. On
-	// any other error, it aborts the stream and returns an RPC status. On
-	// server side, it simply returns the error to the caller.
-	// It's safe to have a goroutine calling SendMsg and another goroutine calling
-	// recvMsg on the same stream at the same time.
-	// But it is not safe to call RecvMsg on the same stream in different goroutines.
-	RecvMsg(m interface{}) error
-}
-
-// ClientStream defines the interface a client stream has to satisfy.
-type ClientStream interface {
-	// Header returns the header metadata received from the server if there
-	// is any. It blocks if the metadata is not ready to read.
-	Header() (metadata.MD, error)
-	// Trailer returns the trailer metadata from the server, if there is any.
-	// It must only be called after stream.CloseAndRecv has returned, or
-	// stream.Recv has returned a non-nil error (including io.EOF).
-	Trailer() metadata.MD
-	// CloseSend closes the send direction of the stream. It closes the stream
-	// when non-nil error is met.
-	CloseSend() error
-	// Stream.SendMsg() may return a non-nil error when something wrong happens sending
-	// the request. The returned error indicates the status of this sending, not the final
-	// status of the RPC.
-	//
-	// Always call Stream.RecvMsg() to drain the stream and get the final
-	// status, otherwise there could be leaked resources.
-	Stream
-}
-
-// NewStream creates a new Stream for the client side. This is typically
-// called by generated code. ctx is used for the lifetime of the stream.
-//
-// To ensure resources are not leaked due to the stream returned, one of the following
-// actions must be performed:
-//
-//      1. Call Close on the ClientConn.
-//      2. Cancel the context provided.
-//      3. Call RecvMsg until a non-nil error is returned. A protobuf-generated
-//         client-streaming RPC, for instance, might use the helper function
-//         CloseAndRecv (note that CloseSend does not Recv, therefore is not
-//         guaranteed to release all resources).
-//      4. Receive a non-nil, non-io.EOF error from Header or SendMsg.
-//
-// If none of the above happen, a goroutine and a context will be leaked, and grpc
-// will not call the optionally-configured stats handler with a stats.End message.
-func (cc *ClientConn) NewStream(ctx context.Context, desc *StreamDesc, method string, opts ...CallOption) (ClientStream, error) {
-	// allow interceptor to see all applicable call options, which means those
-	// configured as defaults from dial option as well as per-call options
-	opts = combine(cc.dopts.callOptions, opts)
-
-	if cc.dopts.streamInt != nil {
-		return cc.dopts.streamInt(ctx, desc, cc, method, newClientStream, opts...)
-	}
-	return newClientStream(ctx, desc, cc, method, opts...)
-}
-
-// NewClientStream is a wrapper for ClientConn.NewStream.
-//
-// DEPRECATED: Use ClientConn.NewStream instead.
-func NewClientStream(ctx context.Context, desc *StreamDesc, cc *ClientConn, method string, opts ...CallOption) (ClientStream, error) {
-	return cc.NewStream(ctx, desc, method, opts...)
-}
-
-func newClientStream(ctx context.Context, desc *StreamDesc, cc *ClientConn, method string, opts ...CallOption) (_ ClientStream, err error) {
-	if channelz.IsOn() {
-		cc.incrCallsStarted()
-		defer func() {
-			if err != nil {
-				cc.incrCallsFailed()
-			}
-		}()
-	}
-	c := defaultCallInfo()
-	mc := cc.GetMethodConfig(method)
-	if mc.WaitForReady != nil {
-		c.failFast = !*mc.WaitForReady
-	}
-
-	// Possible context leak:
-	// The cancel function for the child context we create will only be called
-	// when RecvMsg returns a non-nil error, if the ClientConn is closed, or if
-	// an error is generated by SendMsg.
-	// https://github.com/grpc/grpc-go/issues/1818.
-	var cancel context.CancelFunc
-	if mc.Timeout != nil && *mc.Timeout >= 0 {
-		ctx, cancel = context.WithTimeout(ctx, *mc.Timeout)
-	} else {
-		ctx, cancel = context.WithCancel(ctx)
-	}
-	defer func() {
-		if err != nil {
-			cancel()
-		}
-	}()
-
-	for _, o := range opts {
-		if err := o.before(c); err != nil {
-			return nil, toRPCErr(err)
-		}
-	}
-	c.maxSendMessageSize = getMaxSize(mc.MaxReqSize, c.maxSendMessageSize, defaultClientMaxSendMessageSize)
-	c.maxReceiveMessageSize = getMaxSize(mc.MaxRespSize, c.maxReceiveMessageSize, defaultClientMaxReceiveMessageSize)
-	if err := setCallInfoCodec(c); err != nil {
-		return nil, err
-	}
-
-	callHdr := &transport.CallHdr{
-		Host:   cc.authority,
-		Method: method,
-		// If it's not client streaming, we should already have the request to be sent,
-		// so we don't flush the header.
-		// If it's client streaming, the user may never send a request or send it any
-		// time soon, so we ask the transport to flush the header.
-		Flush:          desc.ClientStreams,
-		ContentSubtype: c.contentSubtype,
-	}
-
-	// Set our outgoing compression according to the UseCompressor CallOption, if
-	// set.  In that case, also find the compressor from the encoding package.
-	// Otherwise, use the compressor configured by the WithCompressor DialOption,
-	// if set.
-	var cp Compressor
-	var comp encoding.Compressor
-	if ct := c.compressorType; ct != "" {
-		callHdr.SendCompress = ct
-		if ct != encoding.Identity {
-			comp = encoding.GetCompressor(ct)
-			if comp == nil {
-				return nil, status.Errorf(codes.Internal, "grpc: Compressor is not installed for requested grpc-encoding %q", ct)
-			}
-		}
-	} else if cc.dopts.cp != nil {
-		callHdr.SendCompress = cc.dopts.cp.Type()
-		cp = cc.dopts.cp
-	}
-	if c.creds != nil {
-		callHdr.Creds = c.creds
-	}
-	var trInfo traceInfo
-	if EnableTracing {
-		trInfo.tr = trace.New("grpc.Sent."+methodFamily(method), method)
-		trInfo.firstLine.client = true
-		if deadline, ok := ctx.Deadline(); ok {
-			trInfo.firstLine.deadline = deadline.Sub(time.Now())
-		}
-		trInfo.tr.LazyLog(&trInfo.firstLine, false)
-		ctx = trace.NewContext(ctx, trInfo.tr)
-		defer func() {
-			if err != nil {
-				// Need to call tr.finish() if error is returned.
-				// Because tr will not be returned to caller.
-				trInfo.tr.LazyPrintf("RPC: [%v]", err)
-				trInfo.tr.SetError()
-				trInfo.tr.Finish()
-			}
-		}()
-	}
-	ctx = newContextWithRPCInfo(ctx, c.failFast)
-	sh := cc.dopts.copts.StatsHandler
-	var beginTime time.Time
-	if sh != nil {
-		ctx = sh.TagRPC(ctx, &stats.RPCTagInfo{FullMethodName: method, FailFast: c.failFast})
-		beginTime = time.Now()
-		begin := &stats.Begin{
-			Client:    true,
-			BeginTime: beginTime,
-			FailFast:  c.failFast,
-		}
-		sh.HandleRPC(ctx, begin)
-		defer func() {
-			if err != nil {
-				// Only handle end stats if err != nil.
-				end := &stats.End{
-					Client:    true,
-					Error:     err,
-					BeginTime: beginTime,
-					EndTime:   time.Now(),
-				}
-				sh.HandleRPC(ctx, end)
-			}
-		}()
-	}
-
-	var (
-		t    transport.ClientTransport
-		s    *transport.Stream
-		done func(balancer.DoneInfo)
-	)
-	for {
-		// Check to make sure the context has expired.  This will prevent us from
-		// looping forever if an error occurs for wait-for-ready RPCs where no data
-		// is sent on the wire.
-		select {
-		case <-ctx.Done():
-			return nil, toRPCErr(ctx.Err())
-		default:
-		}
-
-		t, done, err = cc.getTransport(ctx, c.failFast)
-		if err != nil {
-			return nil, err
-		}
-
-		s, err = t.NewStream(ctx, callHdr)
-		if err != nil {
-			if done != nil {
-				done(balancer.DoneInfo{Err: err})
-				done = nil
-			}
-			// In the event of any error from NewStream, we never attempted to write
-			// anything to the wire, so we can retry indefinitely for non-fail-fast
-			// RPCs.
-			if !c.failFast {
-				continue
-			}
-			return nil, toRPCErr(err)
-		}
-		break
-	}
-
-	cs := &clientStream{
-		opts:   opts,
-		c:      c,
-		cc:     cc,
-		desc:   desc,
-		codec:  c.codec,
-		cp:     cp,
-		comp:   comp,
-		cancel: cancel,
-		attempt: &csAttempt{
-			t:            t,
-			s:            s,
-			p:            &parser{r: s},
-			done:         done,
-			dc:           cc.dopts.dc,
-			ctx:          ctx,
-			trInfo:       trInfo,
-			statsHandler: sh,
-			beginTime:    beginTime,
-		},
-	}
-	cs.c.stream = cs
-	cs.attempt.cs = cs
-	if desc != unaryStreamDesc {
-		// Listen on cc and stream contexts to cleanup when the user closes the
-		// ClientConn or cancels the stream context.  In all other cases, an error
-		// should already be injected into the recv buffer by the transport, which
-		// the client will eventually receive, and then we will cancel the stream's
-		// context in clientStream.finish.
-		go func() {
-			select {
-			case <-cc.ctx.Done():
-				cs.finish(ErrClientConnClosing)
-			case <-ctx.Done():
-				cs.finish(toRPCErr(ctx.Err()))
-			}
-		}()
-	}
-	return cs, nil
-}
-
-// clientStream implements a client side Stream.
-type clientStream struct {
-	opts []CallOption
-	c    *callInfo
-	cc   *ClientConn
-	desc *StreamDesc
-
-	codec baseCodec
-	cp    Compressor
-	comp  encoding.Compressor
-
-	cancel context.CancelFunc // cancels all attempts
-
-	sentLast bool // sent an end stream
-
-	mu       sync.Mutex // guards finished
-	finished bool       // TODO: replace with atomic cmpxchg or sync.Once?
-
-	attempt *csAttempt // the active client stream attempt
-	// TODO(hedging): hedging will have multiple attempts simultaneously.
-}
-
-// csAttempt implements a single transport stream attempt within a
-// clientStream.
-type csAttempt struct {
-	cs   *clientStream
-	t    transport.ClientTransport
-	s    *transport.Stream
-	p    *parser
-	done func(balancer.DoneInfo)
-
-	dc        Decompressor
-	decomp    encoding.Compressor
-	decompSet bool
-
-	ctx context.Context // the application's context, wrapped by stats/tracing
-
-	mu sync.Mutex // guards trInfo.tr
-	// trInfo.tr is set when created (if EnableTracing is true),
-	// and cleared when the finish method is called.
-	trInfo traceInfo
-
-	statsHandler stats.Handler
-	beginTime    time.Time
-}
-
-func (cs *clientStream) Context() context.Context {
-	// TODO(retry): commit the current attempt (the context has peer-aware data).
-	return cs.attempt.context()
-}
-
-func (cs *clientStream) Header() (metadata.MD, error) {
-	m, err := cs.attempt.header()
-	if err != nil {
-		// TODO(retry): maybe retry on error or commit attempt on success.
-		err = toRPCErr(err)
-		cs.finish(err)
-	}
-	return m, err
-}
-
-func (cs *clientStream) Trailer() metadata.MD {
-	// TODO(retry): on error, maybe retry (trailers-only).
-	return cs.attempt.trailer()
-}
-
-func (cs *clientStream) SendMsg(m interface{}) (err error) {
-	// TODO(retry): buffer message for replaying if not committed.
-	return cs.attempt.sendMsg(m)
-}
-
-func (cs *clientStream) RecvMsg(m interface{}) (err error) {
-	// TODO(retry): maybe retry on error or commit attempt on success.
-	return cs.attempt.recvMsg(m)
-}
-
-func (cs *clientStream) CloseSend() error {
-	cs.attempt.closeSend()
-	return nil
-}
-
-func (cs *clientStream) finish(err error) {
-	if err == io.EOF {
-		// Ending a stream with EOF indicates a success.
-		err = nil
-	}
-	cs.mu.Lock()
-	if cs.finished {
-		cs.mu.Unlock()
-		return
-	}
-	cs.finished = true
-	cs.mu.Unlock()
-	if channelz.IsOn() {
-		if err != nil {
-			cs.cc.incrCallsFailed()
-		} else {
-			cs.cc.incrCallsSucceeded()
-		}
-	}
-	// TODO(retry): commit current attempt if necessary.
-	cs.attempt.finish(err)
-	for _, o := range cs.opts {
-		o.after(cs.c)
-	}
-	cs.cancel()
-}
-
-func (a *csAttempt) context() context.Context {
-	return a.s.Context()
-}
-
-func (a *csAttempt) header() (metadata.MD, error) {
-	return a.s.Header()
-}
-
-func (a *csAttempt) trailer() metadata.MD {
-	return a.s.Trailer()
-}
-
-func (a *csAttempt) sendMsg(m interface{}) (err error) {
-	// TODO Investigate how to signal the stats handling party.
-	// generate error stats if err != nil && err != io.EOF?
-	cs := a.cs
-	defer func() {
-		// For non-client-streaming RPCs, we return nil instead of EOF on success
-		// because the generated code requires it.  finish is not called; RecvMsg()
-		// will call it with the stream's status independently.
-		if err == io.EOF && !cs.desc.ClientStreams {
-			err = nil
-		}
-		if err != nil && err != io.EOF {
-			// Call finish on the client stream for errors generated by this SendMsg
-			// call, as these indicate problems created by this client.  (Transport
-			// errors are converted to an io.EOF error below; the real error will be
-			// returned from RecvMsg eventually in that case, or be retried.)
-			cs.finish(err)
-		}
-	}()
-	// TODO: Check cs.sentLast and error if we already ended the stream.
-	if EnableTracing {
-		a.mu.Lock()
-		if a.trInfo.tr != nil {
-			a.trInfo.tr.LazyLog(&payload{sent: true, msg: m}, true)
-		}
-		a.mu.Unlock()
-	}
-	data, err := encode(cs.codec, m)
-	if err != nil {
-		return err
-	}
-	compData, err := compress(data, cs.cp, cs.comp)
-	if err != nil {
-		return err
-	}
-	hdr, payload := msgHeader(data, compData)
-	// TODO(dfawley): should we be checking len(data) instead?
-	if len(payload) > *cs.c.maxSendMessageSize {
-		return status.Errorf(codes.ResourceExhausted, "trying to send message larger than max (%d vs. %d)", len(payload), *cs.c.maxSendMessageSize)
-	}
-
-	if !cs.desc.ClientStreams {
-		cs.sentLast = true
-	}
-	err = a.t.Write(a.s, hdr, payload, &transport.Options{Last: !cs.desc.ClientStreams})
-	if err == nil {
-		if a.statsHandler != nil {
-			a.statsHandler.HandleRPC(a.ctx, outPayload(true, m, data, payload, time.Now()))
-		}
-		if channelz.IsOn() {
-			a.t.IncrMsgSent()
-		}
-		return nil
-	}
-	return io.EOF
-}
-
-func (a *csAttempt) recvMsg(m interface{}) (err error) {
-	cs := a.cs
-	defer func() {
-		if err != nil || !cs.desc.ServerStreams {
-			// err != nil or non-server-streaming indicates end of stream.
-			cs.finish(err)
-		}
-	}()
-	var inPayload *stats.InPayload
-	if a.statsHandler != nil {
-		inPayload = &stats.InPayload{
-			Client: true,
-		}
-	}
-	if !a.decompSet {
-		// Block until we receive headers containing received message encoding.
-		if ct := a.s.RecvCompress(); ct != "" && ct != encoding.Identity {
-			if a.dc == nil || a.dc.Type() != ct {
-				// No configured decompressor, or it does not match the incoming
-				// message encoding; attempt to find a registered compressor that does.
-				a.dc = nil
-				a.decomp = encoding.GetCompressor(ct)
-			}
-		} else {
-			// No compression is used; disable our decompressor.
-			a.dc = nil
-		}
-		// Only initialize this state once per stream.
-		a.decompSet = true
-	}
-	err = recv(a.p, cs.codec, a.s, a.dc, m, *cs.c.maxReceiveMessageSize, inPayload, a.decomp)
-	if err != nil {
-		if err == io.EOF {
-			if statusErr := a.s.Status().Err(); statusErr != nil {
-				return statusErr
-			}
-			return io.EOF // indicates successful end of stream.
-		}
-		return toRPCErr(err)
-	}
-	if EnableTracing {
-		a.mu.Lock()
-		if a.trInfo.tr != nil {
-			a.trInfo.tr.LazyLog(&payload{sent: false, msg: m}, true)
-		}
-		a.mu.Unlock()
-	}
-	if inPayload != nil {
-		a.statsHandler.HandleRPC(a.ctx, inPayload)
-	}
-	if channelz.IsOn() {
-		a.t.IncrMsgRecv()
-	}
-	if cs.desc.ServerStreams {
-		// Subsequent messages should be received by subsequent RecvMsg calls.
-		return nil
-	}
-
-	// Special handling for non-server-stream rpcs.
-	// This recv expects EOF or errors, so we don't collect inPayload.
-	err = recv(a.p, cs.codec, a.s, a.dc, m, *cs.c.maxReceiveMessageSize, nil, a.decomp)
-	if err == nil {
-		return toRPCErr(errors.New("grpc: client streaming protocol violation: get <nil>, want <EOF>"))
-	}
-	if err == io.EOF {
-		return a.s.Status().Err() // non-server streaming Recv returns nil on success
-	}
-	return toRPCErr(err)
-}
-
-func (a *csAttempt) closeSend() {
-	cs := a.cs
-	if cs.sentLast {
-		return
-	}
-	cs.sentLast = true
-	cs.attempt.t.Write(cs.attempt.s, nil, nil, &transport.Options{Last: true})
-	// We ignore errors from Write.  Any error it would return would also be
-	// returned by a subsequent RecvMsg call, and the user is supposed to always
-	// finish the stream by calling RecvMsg until it returns err != nil.
-}
-
-func (a *csAttempt) finish(err error) {
-	a.mu.Lock()
-	a.t.CloseStream(a.s, err)
-
-	if a.done != nil {
-		a.done(balancer.DoneInfo{
-			Err:           err,
-			BytesSent:     true,
-			BytesReceived: a.s.BytesReceived(),
-		})
-	}
-	if a.statsHandler != nil {
-		end := &stats.End{
-			Client:    true,
-			BeginTime: a.beginTime,
-			EndTime:   time.Now(),
-			Error:     err,
-		}
-		a.statsHandler.HandleRPC(a.ctx, end)
-	}
-	if a.trInfo.tr != nil {
-		if err == nil {
-			a.trInfo.tr.LazyPrintf("RPC: [OK]")
-		} else {
-			a.trInfo.tr.LazyPrintf("RPC: [%v]", err)
-			a.trInfo.tr.SetError()
-		}
-		a.trInfo.tr.Finish()
-		a.trInfo.tr = nil
-	}
-	a.mu.Unlock()
-}
-
-// ServerStream defines the interface a server stream has to satisfy.
-type ServerStream interface {
-	// SetHeader sets the header metadata. It may be called multiple times.
-	// When call multiple times, all the provided metadata will be merged.
-	// All the metadata will be sent out when one of the following happens:
-	//  - ServerStream.SendHeader() is called;
-	//  - The first response is sent out;
-	//  - An RPC status is sent out (error or success).
-	SetHeader(metadata.MD) error
-	// SendHeader sends the header metadata.
-	// The provided md and headers set by SetHeader() will be sent.
-	// It fails if called multiple times.
-	SendHeader(metadata.MD) error
-	// SetTrailer sets the trailer metadata which will be sent with the RPC status.
-	// When called more than once, all the provided metadata will be merged.
-	SetTrailer(metadata.MD)
-	Stream
-}
-
-// serverStream implements a server side Stream.
-type serverStream struct {
-	ctx   context.Context
-	t     transport.ServerTransport
-	s     *transport.Stream
-	p     *parser
-	codec baseCodec
-
-	cp     Compressor
-	dc     Decompressor
-	comp   encoding.Compressor
-	decomp encoding.Compressor
-
-	maxReceiveMessageSize int
-	maxSendMessageSize    int
-	trInfo                *traceInfo
-
-	statsHandler stats.Handler
-
-	mu sync.Mutex // protects trInfo.tr after the service handler runs.
-}
-
-func (ss *serverStream) Context() context.Context {
-	return ss.ctx
-}
-
-func (ss *serverStream) SetHeader(md metadata.MD) error {
-	if md.Len() == 0 {
-		return nil
-	}
-	return ss.s.SetHeader(md)
-}
-
-func (ss *serverStream) SendHeader(md metadata.MD) error {
-	return ss.t.WriteHeader(ss.s, md)
-}
-
-func (ss *serverStream) SetTrailer(md metadata.MD) {
-	if md.Len() == 0 {
-		return
-	}
-	ss.s.SetTrailer(md)
-}
-
-func (ss *serverStream) SendMsg(m interface{}) (err error) {
-	defer func() {
-		if ss.trInfo != nil {
-			ss.mu.Lock()
-			if ss.trInfo.tr != nil {
-				if err == nil {
-					ss.trInfo.tr.LazyLog(&payload{sent: true, msg: m}, true)
-				} else {
-					ss.trInfo.tr.LazyLog(&fmtStringer{"%v", []interface{}{err}}, true)
-					ss.trInfo.tr.SetError()
-				}
-			}
-			ss.mu.Unlock()
-		}
-		if err != nil && err != io.EOF {
-			st, _ := status.FromError(toRPCErr(err))
-			ss.t.WriteStatus(ss.s, st)
-		}
-		if channelz.IsOn() && err == nil {
-			ss.t.IncrMsgSent()
-		}
-	}()
-	data, err := encode(ss.codec, m)
-	if err != nil {
-		return err
-	}
-	compData, err := compress(data, ss.cp, ss.comp)
-	if err != nil {
-		return err
-	}
-	hdr, payload := msgHeader(data, compData)
-	// TODO(dfawley): should we be checking len(data) instead?
-	if len(payload) > ss.maxSendMessageSize {
-		return status.Errorf(codes.ResourceExhausted, "trying to send message larger than max (%d vs. %d)", len(payload), ss.maxSendMessageSize)
-	}
-	if err := ss.t.Write(ss.s, hdr, payload, &transport.Options{Last: false}); err != nil {
-		return toRPCErr(err)
-	}
-	if ss.statsHandler != nil {
-		ss.statsHandler.HandleRPC(ss.s.Context(), outPayload(false, m, data, payload, time.Now()))
-	}
-	return nil
-}
-
-func (ss *serverStream) RecvMsg(m interface{}) (err error) {
-	defer func() {
-		if ss.trInfo != nil {
-			ss.mu.Lock()
-			if ss.trInfo.tr != nil {
-				if err == nil {
-					ss.trInfo.tr.LazyLog(&payload{sent: false, msg: m}, true)
-				} else if err != io.EOF {
-					ss.trInfo.tr.LazyLog(&fmtStringer{"%v", []interface{}{err}}, true)
-					ss.trInfo.tr.SetError()
-				}
-			}
-			ss.mu.Unlock()
-		}
-		if err != nil && err != io.EOF {
-			st, _ := status.FromError(toRPCErr(err))
-			ss.t.WriteStatus(ss.s, st)
-		}
-		if channelz.IsOn() && err == nil {
-			ss.t.IncrMsgRecv()
-		}
-	}()
-	var inPayload *stats.InPayload
-	if ss.statsHandler != nil {
-		inPayload = &stats.InPayload{}
-	}
-	if err := recv(ss.p, ss.codec, ss.s, ss.dc, m, ss.maxReceiveMessageSize, inPayload, ss.decomp); err != nil {
-		if err == io.EOF {
-			return err
-		}
-		if err == io.ErrUnexpectedEOF {
-			err = status.Errorf(codes.Internal, io.ErrUnexpectedEOF.Error())
-		}
-		return toRPCErr(err)
-	}
-	if inPayload != nil {
-		ss.statsHandler.HandleRPC(ss.s.Context(), inPayload)
-	}
-	return nil
-}
-
-// MethodFromServerStream returns the method string for the input stream.
-// The returned string is in the format of "/service/method".
-func MethodFromServerStream(stream ServerStream) (string, bool) {
-	return Method(stream.Context())
-}
diff --git a/vendor/google.golang.org/grpc/tap/tap.go b/vendor/google.golang.org/grpc/tap/tap.go
deleted file mode 100644
index 22b8fb50d..000000000
--- a/vendor/google.golang.org/grpc/tap/tap.go
+++ /dev/null
@@ -1,51 +0,0 @@
-/*
- *
- * Copyright 2016 gRPC authors.
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *     http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- *
- */
-
-// Package tap defines the function handles which are executed on the transport
-// layer of gRPC-Go and related information. Everything here is EXPERIMENTAL.
-package tap
-
-import (
-	"golang.org/x/net/context"
-)
-
-// Info defines the relevant information needed by the handles.
-type Info struct {
-	// FullMethodName is the string of grpc method (in the format of
-	// /package.service/method).
-	FullMethodName string
-	// TODO: More to be added.
-}
-
-// ServerInHandle defines the function which runs before a new stream is created
-// on the server side. If it returns a non-nil error, the stream will not be
-// created and a RST_STREAM will be sent back to the client with REFUSED_STREAM.
-// The client will receive an RPC error "code = Unavailable, desc = stream
-// terminated by RST_STREAM with error code: REFUSED_STREAM".
-//
-// It's intended to be used in situations where you don't want to waste the
-// resources to accept the new stream (e.g. rate-limiting). And the content of
-// the error will be ignored and won't be sent back to the client. For other
-// general usages, please use interceptors.
-//
-// Note that it is executed in the per-connection I/O goroutine(s) instead of
-// per-RPC goroutine. Therefore, users should NOT have any
-// blocking/time-consuming work in this handle. Otherwise all the RPCs would
-// slow down. Also, for the same reason, this handle won't be called
-// concurrently by gRPC.
-type ServerInHandle func(ctx context.Context, info *Info) (context.Context, error)
diff --git a/vendor/google.golang.org/grpc/trace.go b/vendor/google.golang.org/grpc/trace.go
deleted file mode 100644
index c1c96dedc..000000000
--- a/vendor/google.golang.org/grpc/trace.go
+++ /dev/null
@@ -1,113 +0,0 @@
-/*
- *
- * Copyright 2015 gRPC authors.
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *     http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- *
- */
-
-package grpc
-
-import (
-	"bytes"
-	"fmt"
-	"io"
-	"net"
-	"strings"
-	"time"
-
-	"golang.org/x/net/trace"
-)
-
-// EnableTracing controls whether to trace RPCs using the golang.org/x/net/trace package.
-// This should only be set before any RPCs are sent or received by this program.
-var EnableTracing bool
-
-// methodFamily returns the trace family for the given method.
-// It turns "/pkg.Service/GetFoo" into "pkg.Service".
-func methodFamily(m string) string {
-	m = strings.TrimPrefix(m, "/") // remove leading slash
-	if i := strings.Index(m, "/"); i >= 0 {
-		m = m[:i] // remove everything from second slash
-	}
-	if i := strings.LastIndex(m, "."); i >= 0 {
-		m = m[i+1:] // cut down to last dotted component
-	}
-	return m
-}
-
-// traceInfo contains tracing information for an RPC.
-type traceInfo struct {
-	tr        trace.Trace
-	firstLine firstLine
-}
-
-// firstLine is the first line of an RPC trace.
-type firstLine struct {
-	client     bool // whether this is a client (outgoing) RPC
-	remoteAddr net.Addr
-	deadline   time.Duration // may be zero
-}
-
-func (f *firstLine) String() string {
-	var line bytes.Buffer
-	io.WriteString(&line, "RPC: ")
-	if f.client {
-		io.WriteString(&line, "to")
-	} else {
-		io.WriteString(&line, "from")
-	}
-	fmt.Fprintf(&line, " %v deadline:", f.remoteAddr)
-	if f.deadline != 0 {
-		fmt.Fprint(&line, f.deadline)
-	} else {
-		io.WriteString(&line, "none")
-	}
-	return line.String()
-}
-
-const truncateSize = 100
-
-func truncate(x string, l int) string {
-	if l > len(x) {
-		return x
-	}
-	return x[:l]
-}
-
-// payload represents an RPC request or response payload.
-type payload struct {
-	sent bool        // whether this is an outgoing payload
-	msg  interface{} // e.g. a proto.Message
-	// TODO(dsymonds): add stringifying info to codec, and limit how much we hold here?
-}
-
-func (p payload) String() string {
-	if p.sent {
-		return truncate(fmt.Sprintf("sent: %v", p.msg), truncateSize)
-	}
-	return truncate(fmt.Sprintf("recv: %v", p.msg), truncateSize)
-}
-
-type fmtStringer struct {
-	format string
-	a      []interface{}
-}
-
-func (f *fmtStringer) String() string {
-	return fmt.Sprintf(f.format, f.a...)
-}
-
-type stringer string
-
-func (s stringer) String() string { return string(s) }
diff --git a/vendor/google.golang.org/grpc/transport/bdp_estimator.go b/vendor/google.golang.org/grpc/transport/bdp_estimator.go
deleted file mode 100644
index 63cd2627c..000000000
--- a/vendor/google.golang.org/grpc/transport/bdp_estimator.go
+++ /dev/null
@@ -1,140 +0,0 @@
-/*
- *
- * Copyright 2017 gRPC authors.
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *     http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- *
- */
-
-package transport
-
-import (
-	"sync"
-	"time"
-)
-
-const (
-	// bdpLimit is the maximum value the flow control windows
-	// will be increased to.
-	bdpLimit = (1 << 20) * 4
-	// alpha is a constant factor used to keep a moving average
-	// of RTTs.
-	alpha = 0.9
-	// If the current bdp sample is greater than or equal to
-	// our beta * our estimated bdp and the current bandwidth
-	// sample is the maximum bandwidth observed so far, we
-	// increase our bbp estimate by a factor of gamma.
-	beta = 0.66
-	// To put our bdp to be smaller than or equal to twice the real BDP,
-	// we should multiply our current sample with 4/3, however to round things out
-	// we use 2 as the multiplication factor.
-	gamma = 2
-)
-
-// Adding arbitrary data to ping so that its ack can be identified.
-// Easter-egg: what does the ping message say?
-var bdpPing = &ping{data: [8]byte{2, 4, 16, 16, 9, 14, 7, 7}}
-
-type bdpEstimator struct {
-	// sentAt is the time when the ping was sent.
-	sentAt time.Time
-
-	mu sync.Mutex
-	// bdp is the current bdp estimate.
-	bdp uint32
-	// sample is the number of bytes received in one measurement cycle.
-	sample uint32
-	// bwMax is the maximum bandwidth noted so far (bytes/sec).
-	bwMax float64
-	// bool to keep track of the beginning of a new measurement cycle.
-	isSent bool
-	// Callback to update the window sizes.
-	updateFlowControl func(n uint32)
-	// sampleCount is the number of samples taken so far.
-	sampleCount uint64
-	// round trip time (seconds)
-	rtt float64
-}
-
-// timesnap registers the time bdp ping was sent out so that
-// network rtt can be calculated when its ack is received.
-// It is called (by controller) when the bdpPing is
-// being written on the wire.
-func (b *bdpEstimator) timesnap(d [8]byte) {
-	if bdpPing.data != d {
-		return
-	}
-	b.sentAt = time.Now()
-}
-
-// add adds bytes to the current sample for calculating bdp.
-// It returns true only if a ping must be sent. This can be used
-// by the caller (handleData) to make decision about batching
-// a window update with it.
-func (b *bdpEstimator) add(n uint32) bool {
-	b.mu.Lock()
-	defer b.mu.Unlock()
-	if b.bdp == bdpLimit {
-		return false
-	}
-	if !b.isSent {
-		b.isSent = true
-		b.sample = n
-		b.sentAt = time.Time{}
-		b.sampleCount++
-		return true
-	}
-	b.sample += n
-	return false
-}
-
-// calculate is called when an ack for a bdp ping is received.
-// Here we calculate the current bdp and bandwidth sample and
-// decide if the flow control windows should go up.
-func (b *bdpEstimator) calculate(d [8]byte) {
-	// Check if the ping acked for was the bdp ping.
-	if bdpPing.data != d {
-		return
-	}
-	b.mu.Lock()
-	rttSample := time.Since(b.sentAt).Seconds()
-	if b.sampleCount < 10 {
-		// Bootstrap rtt with an average of first 10 rtt samples.
-		b.rtt += (rttSample - b.rtt) / float64(b.sampleCount)
-	} else {
-		// Heed to the recent past more.
-		b.rtt += (rttSample - b.rtt) * float64(alpha)
-	}
-	b.isSent = false
-	// The number of bytes accumulated so far in the sample is smaller
-	// than or equal to 1.5 times the real BDP on a saturated connection.
-	bwCurrent := float64(b.sample) / (b.rtt * float64(1.5))
-	if bwCurrent > b.bwMax {
-		b.bwMax = bwCurrent
-	}
-	// If the current sample (which is smaller than or equal to the 1.5 times the real BDP) is
-	// greater than or equal to 2/3rd our perceived bdp AND this is the maximum bandwidth seen so far, we
-	// should update our perception of the network BDP.
-	if float64(b.sample) >= beta*float64(b.bdp) && bwCurrent == b.bwMax && b.bdp != bdpLimit {
-		sampleFloat := float64(b.sample)
-		b.bdp = uint32(gamma * sampleFloat)
-		if b.bdp > bdpLimit {
-			b.bdp = bdpLimit
-		}
-		bdp := b.bdp
-		b.mu.Unlock()
-		b.updateFlowControl(bdp)
-		return
-	}
-	b.mu.Unlock()
-}
diff --git a/vendor/google.golang.org/grpc/transport/controlbuf.go b/vendor/google.golang.org/grpc/transport/controlbuf.go
deleted file mode 100644
index 5c5891a11..000000000
--- a/vendor/google.golang.org/grpc/transport/controlbuf.go
+++ /dev/null
@@ -1,796 +0,0 @@
-/*
- *
- * Copyright 2014 gRPC authors.
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *     http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- *
- */
-
-package transport
-
-import (
-	"bytes"
-	"fmt"
-	"runtime"
-	"sync"
-
-	"golang.org/x/net/http2"
-	"golang.org/x/net/http2/hpack"
-)
-
-var updateHeaderTblSize = func(e *hpack.Encoder, v uint32) {
-	e.SetMaxDynamicTableSizeLimit(v)
-}
-
-type itemNode struct {
-	it   interface{}
-	next *itemNode
-}
-
-type itemList struct {
-	head *itemNode
-	tail *itemNode
-}
-
-func (il *itemList) enqueue(i interface{}) {
-	n := &itemNode{it: i}
-	if il.tail == nil {
-		il.head, il.tail = n, n
-		return
-	}
-	il.tail.next = n
-	il.tail = n
-}
-
-// peek returns the first item in the list without removing it from the
-// list.
-func (il *itemList) peek() interface{} {
-	return il.head.it
-}
-
-func (il *itemList) dequeue() interface{} {
-	if il.head == nil {
-		return nil
-	}
-	i := il.head.it
-	il.head = il.head.next
-	if il.head == nil {
-		il.tail = nil
-	}
-	return i
-}
-
-func (il *itemList) dequeueAll() *itemNode {
-	h := il.head
-	il.head, il.tail = nil, nil
-	return h
-}
-
-func (il *itemList) isEmpty() bool {
-	return il.head == nil
-}
-
-// The following defines various control items which could flow through
-// the control buffer of transport. They represent different aspects of
-// control tasks, e.g., flow control, settings, streaming resetting, etc.
-
-// registerStream is used to register an incoming stream with loopy writer.
-type registerStream struct {
-	streamID uint32
-	wq       *writeQuota
-}
-
-// headerFrame is also used to register stream on the client-side.
-type headerFrame struct {
-	streamID   uint32
-	hf         []hpack.HeaderField
-	endStream  bool                       // Valid on server side.
-	initStream func(uint32) (bool, error) // Used only on the client side.
-	onWrite    func()
-	wq         *writeQuota    // write quota for the stream created.
-	cleanup    *cleanupStream // Valid on the server side.
-	onOrphaned func(error)    // Valid on client-side
-}
-
-type cleanupStream struct {
-	streamID uint32
-	idPtr    *uint32
-	rst      bool
-	rstCode  http2.ErrCode
-	onWrite  func()
-}
-
-type dataFrame struct {
-	streamID  uint32
-	endStream bool
-	h         []byte
-	d         []byte
-	// onEachWrite is called every time
-	// a part of d is written out.
-	onEachWrite func()
-}
-
-type incomingWindowUpdate struct {
-	streamID  uint32
-	increment uint32
-}
-
-type outgoingWindowUpdate struct {
-	streamID  uint32
-	increment uint32
-}
-
-type incomingSettings struct {
-	ss []http2.Setting
-}
-
-type outgoingSettings struct {
-	ss []http2.Setting
-}
-
-type settingsAck struct {
-}
-
-type incomingGoAway struct {
-}
-
-type goAway struct {
-	code      http2.ErrCode
-	debugData []byte
-	headsUp   bool
-	closeConn bool
-}
-
-type ping struct {
-	ack  bool
-	data [8]byte
-}
-
-type outFlowControlSizeRequest struct {
-	resp chan uint32
-}
-
-type outStreamState int
-
-const (
-	active outStreamState = iota
-	empty
-	waitingOnStreamQuota
-)
-
-type outStream struct {
-	id               uint32
-	state            outStreamState
-	itl              *itemList
-	bytesOutStanding int
-	wq               *writeQuota
-
-	next *outStream
-	prev *outStream
-}
-
-func (s *outStream) deleteSelf() {
-	if s.prev != nil {
-		s.prev.next = s.next
-	}
-	if s.next != nil {
-		s.next.prev = s.prev
-	}
-	s.next, s.prev = nil, nil
-}
-
-type outStreamList struct {
-	// Following are sentinel objects that mark the
-	// beginning and end of the list. They do not
-	// contain any item lists. All valid objects are
-	// inserted in between them.
-	// This is needed so that an outStream object can
-	// deleteSelf() in O(1) time without knowing which
-	// list it belongs to.
-	head *outStream
-	tail *outStream
-}
-
-func newOutStreamList() *outStreamList {
-	head, tail := new(outStream), new(outStream)
-	head.next = tail
-	tail.prev = head
-	return &outStreamList{
-		head: head,
-		tail: tail,
-	}
-}
-
-func (l *outStreamList) enqueue(s *outStream) {
-	e := l.tail.prev
-	e.next = s
-	s.prev = e
-	s.next = l.tail
-	l.tail.prev = s
-}
-
-// remove from the beginning of the list.
-func (l *outStreamList) dequeue() *outStream {
-	b := l.head.next
-	if b == l.tail {
-		return nil
-	}
-	b.deleteSelf()
-	return b
-}
-
-type controlBuffer struct {
-	ch              chan struct{}
-	done            <-chan struct{}
-	mu              sync.Mutex
-	consumerWaiting bool
-	list            *itemList
-	err             error
-}
-
-func newControlBuffer(done <-chan struct{}) *controlBuffer {
-	return &controlBuffer{
-		ch:   make(chan struct{}, 1),
-		list: &itemList{},
-		done: done,
-	}
-}
-
-func (c *controlBuffer) put(it interface{}) error {
-	_, err := c.executeAndPut(nil, it)
-	return err
-}
-
-func (c *controlBuffer) executeAndPut(f func(it interface{}) bool, it interface{}) (bool, error) {
-	var wakeUp bool
-	c.mu.Lock()
-	if c.err != nil {
-		c.mu.Unlock()
-		return false, c.err
-	}
-	if f != nil {
-		if !f(it) { // f wasn't successful
-			c.mu.Unlock()
-			return false, nil
-		}
-	}
-	if c.consumerWaiting {
-		wakeUp = true
-		c.consumerWaiting = false
-	}
-	c.list.enqueue(it)
-	c.mu.Unlock()
-	if wakeUp {
-		select {
-		case c.ch <- struct{}{}:
-		default:
-		}
-	}
-	return true, nil
-}
-
-func (c *controlBuffer) get(block bool) (interface{}, error) {
-	for {
-		c.mu.Lock()
-		if c.err != nil {
-			c.mu.Unlock()
-			return nil, c.err
-		}
-		if !c.list.isEmpty() {
-			h := c.list.dequeue()
-			c.mu.Unlock()
-			return h, nil
-		}
-		if !block {
-			c.mu.Unlock()
-			return nil, nil
-		}
-		c.consumerWaiting = true
-		c.mu.Unlock()
-		select {
-		case <-c.ch:
-		case <-c.done:
-			c.finish()
-			return nil, ErrConnClosing
-		}
-	}
-}
-
-func (c *controlBuffer) finish() {
-	c.mu.Lock()
-	if c.err != nil {
-		c.mu.Unlock()
-		return
-	}
-	c.err = ErrConnClosing
-	// There may be headers for streams in the control buffer.
-	// These streams need to be cleaned out since the transport
-	// is still not aware of these yet.
-	for head := c.list.dequeueAll(); head != nil; head = head.next {
-		hdr, ok := head.it.(*headerFrame)
-		if !ok {
-			continue
-		}
-		if hdr.onOrphaned != nil { // It will be nil on the server-side.
-			hdr.onOrphaned(ErrConnClosing)
-		}
-	}
-	c.mu.Unlock()
-}
-
-type side int
-
-const (
-	clientSide side = iota
-	serverSide
-)
-
-type loopyWriter struct {
-	side          side
-	cbuf          *controlBuffer
-	sendQuota     uint32
-	oiws          uint32                // outbound initial window size.
-	estdStreams   map[uint32]*outStream // Established streams.
-	activeStreams *outStreamList        // Streams that are sending data.
-	framer        *framer
-	hBuf          *bytes.Buffer  // The buffer for HPACK encoding.
-	hEnc          *hpack.Encoder // HPACK encoder.
-	bdpEst        *bdpEstimator
-	draining      bool
-
-	// Side-specific handlers
-	ssGoAwayHandler func(*goAway) (bool, error)
-}
-
-func newLoopyWriter(s side, fr *framer, cbuf *controlBuffer, bdpEst *bdpEstimator) *loopyWriter {
-	var buf bytes.Buffer
-	l := &loopyWriter{
-		side:          s,
-		cbuf:          cbuf,
-		sendQuota:     defaultWindowSize,
-		oiws:          defaultWindowSize,
-		estdStreams:   make(map[uint32]*outStream),
-		activeStreams: newOutStreamList(),
-		framer:        fr,
-		hBuf:          &buf,
-		hEnc:          hpack.NewEncoder(&buf),
-		bdpEst:        bdpEst,
-	}
-	return l
-}
-
-const minBatchSize = 1000
-
-// run should be run in a separate goroutine.
-func (l *loopyWriter) run() (err error) {
-	defer func() {
-		if err == ErrConnClosing {
-			// Don't log ErrConnClosing as error since it happens
-			// 1. When the connection is closed by some other known issue.
-			// 2. User closed the connection.
-			// 3. A graceful close of connection.
-			infof("transport: loopyWriter.run returning. %v", err)
-			err = nil
-		}
-	}()
-	for {
-		it, err := l.cbuf.get(true)
-		if err != nil {
-			return err
-		}
-		if err = l.handle(it); err != nil {
-			return err
-		}
-		if _, err = l.processData(); err != nil {
-			return err
-		}
-		gosched := true
-	hasdata:
-		for {
-			it, err := l.cbuf.get(false)
-			if err != nil {
-				return err
-			}
-			if it != nil {
-				if err = l.handle(it); err != nil {
-					return err
-				}
-				if _, err = l.processData(); err != nil {
-					return err
-				}
-				continue hasdata
-			}
-			isEmpty, err := l.processData()
-			if err != nil {
-				return err
-			}
-			if !isEmpty {
-				continue hasdata
-			}
-			if gosched {
-				gosched = false
-				if l.framer.writer.offset < minBatchSize {
-					runtime.Gosched()
-					continue hasdata
-				}
-			}
-			l.framer.writer.Flush()
-			break hasdata
-
-		}
-	}
-}
-
-func (l *loopyWriter) outgoingWindowUpdateHandler(w *outgoingWindowUpdate) error {
-	return l.framer.fr.WriteWindowUpdate(w.streamID, w.increment)
-}
-
-func (l *loopyWriter) incomingWindowUpdateHandler(w *incomingWindowUpdate) error {
-	// Otherwise update the quota.
-	if w.streamID == 0 {
-		l.sendQuota += w.increment
-		return nil
-	}
-	// Find the stream and update it.
-	if str, ok := l.estdStreams[w.streamID]; ok {
-		str.bytesOutStanding -= int(w.increment)
-		if strQuota := int(l.oiws) - str.bytesOutStanding; strQuota > 0 && str.state == waitingOnStreamQuota {
-			str.state = active
-			l.activeStreams.enqueue(str)
-			return nil
-		}
-	}
-	return nil
-}
-
-func (l *loopyWriter) outgoingSettingsHandler(s *outgoingSettings) error {
-	return l.framer.fr.WriteSettings(s.ss...)
-}
-
-func (l *loopyWriter) incomingSettingsHandler(s *incomingSettings) error {
-	if err := l.applySettings(s.ss); err != nil {
-		return err
-	}
-	return l.framer.fr.WriteSettingsAck()
-}
-
-func (l *loopyWriter) registerStreamHandler(h *registerStream) error {
-	str := &outStream{
-		id:    h.streamID,
-		state: empty,
-		itl:   &itemList{},
-		wq:    h.wq,
-	}
-	l.estdStreams[h.streamID] = str
-	return nil
-}
-
-func (l *loopyWriter) headerHandler(h *headerFrame) error {
-	if l.side == serverSide {
-		str, ok := l.estdStreams[h.streamID]
-		if !ok {
-			warningf("transport: loopy doesn't recognize the stream: %d", h.streamID)
-			return nil
-		}
-		// Case 1.A: Server is responding back with headers.
-		if !h.endStream {
-			return l.writeHeader(h.streamID, h.endStream, h.hf, h.onWrite)
-		}
-		// else:  Case 1.B: Server wants to close stream.
-
-		if str.state != empty { // either active or waiting on stream quota.
-			// add it str's list of items.
-			str.itl.enqueue(h)
-			return nil
-		}
-		if err := l.writeHeader(h.streamID, h.endStream, h.hf, h.onWrite); err != nil {
-			return err
-		}
-		return l.cleanupStreamHandler(h.cleanup)
-	}
-	// Case 2: Client wants to originate stream.
-	str := &outStream{
-		id:    h.streamID,
-		state: empty,
-		itl:   &itemList{},
-		wq:    h.wq,
-	}
-	str.itl.enqueue(h)
-	return l.originateStream(str)
-}
-
-func (l *loopyWriter) originateStream(str *outStream) error {
-	hdr := str.itl.dequeue().(*headerFrame)
-	sendPing, err := hdr.initStream(str.id)
-	if err != nil {
-		if err == ErrConnClosing {
-			return err
-		}
-		// Other errors(errStreamDrain) need not close transport.
-		return nil
-	}
-	if err = l.writeHeader(str.id, hdr.endStream, hdr.hf, hdr.onWrite); err != nil {
-		return err
-	}
-	l.estdStreams[str.id] = str
-	if sendPing {
-		return l.pingHandler(&ping{data: [8]byte{}})
-	}
-	return nil
-}
-
-func (l *loopyWriter) writeHeader(streamID uint32, endStream bool, hf []hpack.HeaderField, onWrite func()) error {
-	if onWrite != nil {
-		onWrite()
-	}
-	l.hBuf.Reset()
-	for _, f := range hf {
-		if err := l.hEnc.WriteField(f); err != nil {
-			warningf("transport: loopyWriter.writeHeader encountered error while encoding headers:", err)
-		}
-	}
-	var (
-		err               error
-		endHeaders, first bool
-	)
-	first = true
-	for !endHeaders {
-		size := l.hBuf.Len()
-		if size > http2MaxFrameLen {
-			size = http2MaxFrameLen
-		} else {
-			endHeaders = true
-		}
-		if first {
-			first = false
-			err = l.framer.fr.WriteHeaders(http2.HeadersFrameParam{
-				StreamID:      streamID,
-				BlockFragment: l.hBuf.Next(size),
-				EndStream:     endStream,
-				EndHeaders:    endHeaders,
-			})
-		} else {
-			err = l.framer.fr.WriteContinuation(
-				streamID,
-				endHeaders,
-				l.hBuf.Next(size),
-			)
-		}
-		if err != nil {
-			return err
-		}
-	}
-	return nil
-}
-
-func (l *loopyWriter) preprocessData(df *dataFrame) error {
-	str, ok := l.estdStreams[df.streamID]
-	if !ok {
-		return nil
-	}
-	// If we got data for a stream it means that
-	// stream was originated and the headers were sent out.
-	str.itl.enqueue(df)
-	if str.state == empty {
-		str.state = active
-		l.activeStreams.enqueue(str)
-	}
-	return nil
-}
-
-func (l *loopyWriter) pingHandler(p *ping) error {
-	if !p.ack {
-		l.bdpEst.timesnap(p.data)
-	}
-	return l.framer.fr.WritePing(p.ack, p.data)
-
-}
-
-func (l *loopyWriter) outFlowControlSizeRequestHandler(o *outFlowControlSizeRequest) error {
-	o.resp <- l.sendQuota
-	return nil
-}
-
-func (l *loopyWriter) cleanupStreamHandler(c *cleanupStream) error {
-	c.onWrite()
-	if str, ok := l.estdStreams[c.streamID]; ok {
-		// On the server side it could be a trailers-only response or
-		// a RST_STREAM before stream initialization thus the stream might
-		// not be established yet.
-		delete(l.estdStreams, c.streamID)
-		str.deleteSelf()
-	}
-	if c.rst { // If RST_STREAM needs to be sent.
-		if err := l.framer.fr.WriteRSTStream(c.streamID, c.rstCode); err != nil {
-			return err
-		}
-	}
-	if l.side == clientSide && l.draining && len(l.estdStreams) == 0 {
-		return ErrConnClosing
-	}
-	return nil
-}
-
-func (l *loopyWriter) incomingGoAwayHandler(*incomingGoAway) error {
-	if l.side == clientSide {
-		l.draining = true
-		if len(l.estdStreams) == 0 {
-			return ErrConnClosing
-		}
-	}
-	return nil
-}
-
-func (l *loopyWriter) goAwayHandler(g *goAway) error {
-	// Handling of outgoing GoAway is very specific to side.
-	if l.ssGoAwayHandler != nil {
-		draining, err := l.ssGoAwayHandler(g)
-		if err != nil {
-			return err
-		}
-		l.draining = draining
-	}
-	return nil
-}
-
-func (l *loopyWriter) handle(i interface{}) error {
-	switch i := i.(type) {
-	case *incomingWindowUpdate:
-		return l.incomingWindowUpdateHandler(i)
-	case *outgoingWindowUpdate:
-		return l.outgoingWindowUpdateHandler(i)
-	case *incomingSettings:
-		return l.incomingSettingsHandler(i)
-	case *outgoingSettings:
-		return l.outgoingSettingsHandler(i)
-	case *headerFrame:
-		return l.headerHandler(i)
-	case *registerStream:
-		return l.registerStreamHandler(i)
-	case *cleanupStream:
-		return l.cleanupStreamHandler(i)
-	case *incomingGoAway:
-		return l.incomingGoAwayHandler(i)
-	case *dataFrame:
-		return l.preprocessData(i)
-	case *ping:
-		return l.pingHandler(i)
-	case *goAway:
-		return l.goAwayHandler(i)
-	case *outFlowControlSizeRequest:
-		return l.outFlowControlSizeRequestHandler(i)
-	default:
-		return fmt.Errorf("transport: unknown control message type %T", i)
-	}
-}
-
-func (l *loopyWriter) applySettings(ss []http2.Setting) error {
-	for _, s := range ss {
-		switch s.ID {
-		case http2.SettingInitialWindowSize:
-			o := l.oiws
-			l.oiws = s.Val
-			if o < l.oiws {
-				// If the new limit is greater make all depleted streams active.
-				for _, stream := range l.estdStreams {
-					if stream.state == waitingOnStreamQuota {
-						stream.state = active
-						l.activeStreams.enqueue(stream)
-					}
-				}
-			}
-		case http2.SettingHeaderTableSize:
-			updateHeaderTblSize(l.hEnc, s.Val)
-		}
-	}
-	return nil
-}
-
-func (l *loopyWriter) processData() (bool, error) {
-	if l.sendQuota == 0 {
-		return true, nil
-	}
-	str := l.activeStreams.dequeue()
-	if str == nil {
-		return true, nil
-	}
-	dataItem := str.itl.peek().(*dataFrame)
-	if len(dataItem.h) == 0 && len(dataItem.d) == 0 {
-		// Client sends out empty data frame with endStream = true
-		if err := l.framer.fr.WriteData(dataItem.streamID, dataItem.endStream, nil); err != nil {
-			return false, err
-		}
-		str.itl.dequeue()
-		if str.itl.isEmpty() {
-			str.state = empty
-		} else if trailer, ok := str.itl.peek().(*headerFrame); ok { // the next item is trailers.
-			if err := l.writeHeader(trailer.streamID, trailer.endStream, trailer.hf, trailer.onWrite); err != nil {
-				return false, err
-			}
-			if err := l.cleanupStreamHandler(trailer.cleanup); err != nil {
-				return false, nil
-			}
-		} else {
-			l.activeStreams.enqueue(str)
-		}
-		return false, nil
-	}
-	var (
-		idx int
-		buf []byte
-	)
-	if len(dataItem.h) != 0 { // data header has not been written out yet.
-		buf = dataItem.h
-	} else {
-		idx = 1
-		buf = dataItem.d
-	}
-	size := http2MaxFrameLen
-	if len(buf) < size {
-		size = len(buf)
-	}
-	if strQuota := int(l.oiws) - str.bytesOutStanding; strQuota <= 0 {
-		str.state = waitingOnStreamQuota
-		return false, nil
-	} else if strQuota < size {
-		size = strQuota
-	}
-
-	if l.sendQuota < uint32(size) {
-		size = int(l.sendQuota)
-	}
-	// Now that outgoing flow controls are checked we can replenish str's write quota
-	str.wq.replenish(size)
-	var endStream bool
-	// This last data message on this stream and all
-	// of it can be written in this go.
-	if dataItem.endStream && size == len(buf) {
-		// buf contains either data or it contains header but data is empty.
-		if idx == 1 || len(dataItem.d) == 0 {
-			endStream = true
-		}
-	}
-	if dataItem.onEachWrite != nil {
-		dataItem.onEachWrite()
-	}
-	if err := l.framer.fr.WriteData(dataItem.streamID, endStream, buf[:size]); err != nil {
-		return false, err
-	}
-	buf = buf[size:]
-	str.bytesOutStanding += size
-	l.sendQuota -= uint32(size)
-	if idx == 0 {
-		dataItem.h = buf
-	} else {
-		dataItem.d = buf
-	}
-
-	if len(dataItem.h) == 0 && len(dataItem.d) == 0 { // All the data from that message was written out.
-		str.itl.dequeue()
-	}
-	if str.itl.isEmpty() {
-		str.state = empty
-	} else if trailer, ok := str.itl.peek().(*headerFrame); ok { // The next item is trailers.
-		if err := l.writeHeader(trailer.streamID, trailer.endStream, trailer.hf, trailer.onWrite); err != nil {
-			return false, err
-		}
-		if err := l.cleanupStreamHandler(trailer.cleanup); err != nil {
-			return false, err
-		}
-	} else if int(l.oiws)-str.bytesOutStanding <= 0 { // Ran out of stream quota.
-		str.state = waitingOnStreamQuota
-	} else { // Otherwise add it back to the list of active streams.
-		l.activeStreams.enqueue(str)
-	}
-	return false, nil
-}
diff --git a/vendor/google.golang.org/grpc/transport/flowcontrol.go b/vendor/google.golang.org/grpc/transport/flowcontrol.go
deleted file mode 100644
index bbf98b6f5..000000000
--- a/vendor/google.golang.org/grpc/transport/flowcontrol.go
+++ /dev/null
@@ -1,242 +0,0 @@
-/*
- *
- * Copyright 2014 gRPC authors.
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *     http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- *
- */
-
-package transport
-
-import (
-	"fmt"
-	"math"
-	"sync"
-	"sync/atomic"
-	"time"
-)
-
-const (
-	// The default value of flow control window size in HTTP2 spec.
-	defaultWindowSize = 65535
-	// The initial window size for flow control.
-	initialWindowSize             = defaultWindowSize // for an RPC
-	infinity                      = time.Duration(math.MaxInt64)
-	defaultClientKeepaliveTime    = infinity
-	defaultClientKeepaliveTimeout = 20 * time.Second
-	defaultMaxStreamsClient       = 100
-	defaultMaxConnectionIdle      = infinity
-	defaultMaxConnectionAge       = infinity
-	defaultMaxConnectionAgeGrace  = infinity
-	defaultServerKeepaliveTime    = 2 * time.Hour
-	defaultServerKeepaliveTimeout = 20 * time.Second
-	defaultKeepalivePolicyMinTime = 5 * time.Minute
-	// max window limit set by HTTP2 Specs.
-	maxWindowSize = math.MaxInt32
-	// defaultWriteQuota is the default value for number of data
-	// bytes that each stream can schedule before some of it being
-	// flushed out.
-	defaultWriteQuota = 64 * 1024
-)
-
-// writeQuota is a soft limit on the amount of data a stream can
-// schedule before some of it is written out.
-type writeQuota struct {
-	quota int32
-	// get waits on read from when quota goes less than or equal to zero.
-	// replenish writes on it when quota goes positive again.
-	ch chan struct{}
-	// done is triggered in error case.
-	done <-chan struct{}
-	// replenish is called by loopyWriter to give quota back to.
-	// It is implemented as a field so that it can be updated
-	// by tests.
-	replenish func(n int)
-}
-
-func newWriteQuota(sz int32, done <-chan struct{}) *writeQuota {
-	w := &writeQuota{
-		quota: sz,
-		ch:    make(chan struct{}, 1),
-		done:  done,
-	}
-	w.replenish = w.realReplenish
-	return w
-}
-
-func (w *writeQuota) get(sz int32) error {
-	for {
-		if atomic.LoadInt32(&w.quota) > 0 {
-			atomic.AddInt32(&w.quota, -sz)
-			return nil
-		}
-		select {
-		case <-w.ch:
-			continue
-		case <-w.done:
-			return errStreamDone
-		}
-	}
-}
-
-func (w *writeQuota) realReplenish(n int) {
-	sz := int32(n)
-	a := atomic.AddInt32(&w.quota, sz)
-	b := a - sz
-	if b <= 0 && a > 0 {
-		select {
-		case w.ch <- struct{}{}:
-		default:
-		}
-	}
-}
-
-type trInFlow struct {
-	limit               uint32
-	unacked             uint32
-	effectiveWindowSize uint32
-}
-
-func (f *trInFlow) newLimit(n uint32) uint32 {
-	d := n - f.limit
-	f.limit = n
-	f.updateEffectiveWindowSize()
-	return d
-}
-
-func (f *trInFlow) onData(n uint32) uint32 {
-	f.unacked += n
-	if f.unacked >= f.limit/4 {
-		w := f.unacked
-		f.unacked = 0
-		f.updateEffectiveWindowSize()
-		return w
-	}
-	f.updateEffectiveWindowSize()
-	return 0
-}
-
-func (f *trInFlow) reset() uint32 {
-	w := f.unacked
-	f.unacked = 0
-	f.updateEffectiveWindowSize()
-	return w
-}
-
-func (f *trInFlow) updateEffectiveWindowSize() {
-	atomic.StoreUint32(&f.effectiveWindowSize, f.limit-f.unacked)
-}
-
-func (f *trInFlow) getSize() uint32 {
-	return atomic.LoadUint32(&f.effectiveWindowSize)
-}
-
-// TODO(mmukhi): Simplify this code.
-// inFlow deals with inbound flow control
-type inFlow struct {
-	mu sync.Mutex
-	// The inbound flow control limit for pending data.
-	limit uint32
-	// pendingData is the overall data which have been received but not been
-	// consumed by applications.
-	pendingData uint32
-	// The amount of data the application has consumed but grpc has not sent
-	// window update for them. Used to reduce window update frequency.
-	pendingUpdate uint32
-	// delta is the extra window update given by receiver when an application
-	// is reading data bigger in size than the inFlow limit.
-	delta uint32
-}
-
-// newLimit updates the inflow window to a new value n.
-// It assumes that n is always greater than the old limit.
-func (f *inFlow) newLimit(n uint32) uint32 {
-	f.mu.Lock()
-	d := n - f.limit
-	f.limit = n
-	f.mu.Unlock()
-	return d
-}
-
-func (f *inFlow) maybeAdjust(n uint32) uint32 {
-	if n > uint32(math.MaxInt32) {
-		n = uint32(math.MaxInt32)
-	}
-	f.mu.Lock()
-	// estSenderQuota is the receiver's view of the maximum number of bytes the sender
-	// can send without a window update.
-	estSenderQuota := int32(f.limit - (f.pendingData + f.pendingUpdate))
-	// estUntransmittedData is the maximum number of bytes the sends might not have put
-	// on the wire yet. A value of 0 or less means that we have already received all or
-	// more bytes than the application is requesting to read.
-	estUntransmittedData := int32(n - f.pendingData) // Casting into int32 since it could be negative.
-	// This implies that unless we send a window update, the sender won't be able to send all the bytes
-	// for this message. Therefore we must send an update over the limit since there's an active read
-	// request from the application.
-	if estUntransmittedData > estSenderQuota {
-		// Sender's window shouldn't go more than 2^31 - 1 as specified in the HTTP spec.
-		if f.limit+n > maxWindowSize {
-			f.delta = maxWindowSize - f.limit
-		} else {
-			// Send a window update for the whole message and not just the difference between
-			// estUntransmittedData and estSenderQuota. This will be helpful in case the message
-			// is padded; We will fallback on the current available window(at least a 1/4th of the limit).
-			f.delta = n
-		}
-		f.mu.Unlock()
-		return f.delta
-	}
-	f.mu.Unlock()
-	return 0
-}
-
-// onData is invoked when some data frame is received. It updates pendingData.
-func (f *inFlow) onData(n uint32) error {
-	f.mu.Lock()
-	f.pendingData += n
-	if f.pendingData+f.pendingUpdate > f.limit+f.delta {
-		limit := f.limit
-		rcvd := f.pendingData + f.pendingUpdate
-		f.mu.Unlock()
-		return fmt.Errorf("received %d-bytes data exceeding the limit %d bytes", rcvd, limit)
-	}
-	f.mu.Unlock()
-	return nil
-}
-
-// onRead is invoked when the application reads the data. It returns the window size
-// to be sent to the peer.
-func (f *inFlow) onRead(n uint32) uint32 {
-	f.mu.Lock()
-	if f.pendingData == 0 {
-		f.mu.Unlock()
-		return 0
-	}
-	f.pendingData -= n
-	if n > f.delta {
-		n -= f.delta
-		f.delta = 0
-	} else {
-		f.delta -= n
-		n = 0
-	}
-	f.pendingUpdate += n
-	if f.pendingUpdate >= f.limit/4 {
-		wu := f.pendingUpdate
-		f.pendingUpdate = 0
-		f.mu.Unlock()
-		return wu
-	}
-	f.mu.Unlock()
-	return 0
-}
diff --git a/vendor/google.golang.org/grpc/transport/go16.go b/vendor/google.golang.org/grpc/transport/go16.go
deleted file mode 100644
index 5babcf9b8..000000000
--- a/vendor/google.golang.org/grpc/transport/go16.go
+++ /dev/null
@@ -1,51 +0,0 @@
-// +build go1.6,!go1.7
-
-/*
- *
- * Copyright 2016 gRPC authors.
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *     http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- *
- */
-
-package transport
-
-import (
-	"net"
-	"net/http"
-
-	"google.golang.org/grpc/codes"
-
-	"golang.org/x/net/context"
-)
-
-// dialContext connects to the address on the named network.
-func dialContext(ctx context.Context, network, address string) (net.Conn, error) {
-	return (&net.Dialer{Cancel: ctx.Done()}).Dial(network, address)
-}
-
-// ContextErr converts the error from context package into a StreamError.
-func ContextErr(err error) StreamError {
-	switch err {
-	case context.DeadlineExceeded:
-		return streamErrorf(codes.DeadlineExceeded, "%v", err)
-	case context.Canceled:
-		return streamErrorf(codes.Canceled, "%v", err)
-	}
-	return streamErrorf(codes.Internal, "Unexpected error from context packet: %v", err)
-}
-
-// contextFromRequest returns a background context.
-func contextFromRequest(r *http.Request) context.Context {
-	return context.Background()
-}
diff --git a/vendor/google.golang.org/grpc/transport/go17.go b/vendor/google.golang.org/grpc/transport/go17.go
deleted file mode 100644
index b7fa6bdb9..000000000
--- a/vendor/google.golang.org/grpc/transport/go17.go
+++ /dev/null
@@ -1,52 +0,0 @@
-// +build go1.7
-
-/*
- *
- * Copyright 2016 gRPC authors.
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *     http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- *
- */
-
-package transport
-
-import (
-	"context"
-	"net"
-	"net/http"
-
-	"google.golang.org/grpc/codes"
-
-	netctx "golang.org/x/net/context"
-)
-
-// dialContext connects to the address on the named network.
-func dialContext(ctx context.Context, network, address string) (net.Conn, error) {
-	return (&net.Dialer{}).DialContext(ctx, network, address)
-}
-
-// ContextErr converts the error from context package into a StreamError.
-func ContextErr(err error) StreamError {
-	switch err {
-	case context.DeadlineExceeded, netctx.DeadlineExceeded:
-		return streamErrorf(codes.DeadlineExceeded, "%v", err)
-	case context.Canceled, netctx.Canceled:
-		return streamErrorf(codes.Canceled, "%v", err)
-	}
-	return streamErrorf(codes.Internal, "Unexpected error from context packet: %v", err)
-}
-
-// contextFromRequest returns a context from the HTTP Request.
-func contextFromRequest(r *http.Request) context.Context {
-	return r.Context()
-}
diff --git a/vendor/google.golang.org/grpc/transport/handler_server.go b/vendor/google.golang.org/grpc/transport/handler_server.go
deleted file mode 100644
index f71b74821..000000000
--- a/vendor/google.golang.org/grpc/transport/handler_server.go
+++ /dev/null
@@ -1,451 +0,0 @@
-/*
- *
- * Copyright 2016 gRPC authors.
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *     http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- *
- */
-
-// This file is the implementation of a gRPC server using HTTP/2 which
-// uses the standard Go http2 Server implementation (via the
-// http.Handler interface), rather than speaking low-level HTTP/2
-// frames itself. It is the implementation of *grpc.Server.ServeHTTP.
-
-package transport
-
-import (
-	"errors"
-	"fmt"
-	"io"
-	"net"
-	"net/http"
-	"strings"
-	"sync"
-	"time"
-
-	"github.com/golang/protobuf/proto"
-	"golang.org/x/net/context"
-	"golang.org/x/net/http2"
-	"google.golang.org/grpc/codes"
-	"google.golang.org/grpc/credentials"
-	"google.golang.org/grpc/metadata"
-	"google.golang.org/grpc/peer"
-	"google.golang.org/grpc/stats"
-	"google.golang.org/grpc/status"
-)
-
-// NewServerHandlerTransport returns a ServerTransport handling gRPC
-// from inside an http.Handler. It requires that the http Server
-// supports HTTP/2.
-func NewServerHandlerTransport(w http.ResponseWriter, r *http.Request, stats stats.Handler) (ServerTransport, error) {
-	if r.ProtoMajor != 2 {
-		return nil, errors.New("gRPC requires HTTP/2")
-	}
-	if r.Method != "POST" {
-		return nil, errors.New("invalid gRPC request method")
-	}
-	contentType := r.Header.Get("Content-Type")
-	// TODO: do we assume contentType is lowercase? we did before
-	contentSubtype, validContentType := contentSubtype(contentType)
-	if !validContentType {
-		return nil, errors.New("invalid gRPC request content-type")
-	}
-	if _, ok := w.(http.Flusher); !ok {
-		return nil, errors.New("gRPC requires a ResponseWriter supporting http.Flusher")
-	}
-	if _, ok := w.(http.CloseNotifier); !ok {
-		return nil, errors.New("gRPC requires a ResponseWriter supporting http.CloseNotifier")
-	}
-
-	st := &serverHandlerTransport{
-		rw:             w,
-		req:            r,
-		closedCh:       make(chan struct{}),
-		writes:         make(chan func()),
-		contentType:    contentType,
-		contentSubtype: contentSubtype,
-		stats:          stats,
-	}
-
-	if v := r.Header.Get("grpc-timeout"); v != "" {
-		to, err := decodeTimeout(v)
-		if err != nil {
-			return nil, streamErrorf(codes.Internal, "malformed time-out: %v", err)
-		}
-		st.timeoutSet = true
-		st.timeout = to
-	}
-
-	metakv := []string{"content-type", contentType}
-	if r.Host != "" {
-		metakv = append(metakv, ":authority", r.Host)
-	}
-	for k, vv := range r.Header {
-		k = strings.ToLower(k)
-		if isReservedHeader(k) && !isWhitelistedHeader(k) {
-			continue
-		}
-		for _, v := range vv {
-			v, err := decodeMetadataHeader(k, v)
-			if err != nil {
-				return nil, streamErrorf(codes.Internal, "malformed binary metadata: %v", err)
-			}
-			metakv = append(metakv, k, v)
-		}
-	}
-	st.headerMD = metadata.Pairs(metakv...)
-
-	return st, nil
-}
-
-// serverHandlerTransport is an implementation of ServerTransport
-// which replies to exactly one gRPC request (exactly one HTTP request),
-// using the net/http.Handler interface. This http.Handler is guaranteed
-// at this point to be speaking over HTTP/2, so it's able to speak valid
-// gRPC.
-type serverHandlerTransport struct {
-	rw               http.ResponseWriter
-	req              *http.Request
-	timeoutSet       bool
-	timeout          time.Duration
-	didCommonHeaders bool
-
-	headerMD metadata.MD
-
-	closeOnce sync.Once
-	closedCh  chan struct{} // closed on Close
-
-	// writes is a channel of code to run serialized in the
-	// ServeHTTP (HandleStreams) goroutine. The channel is closed
-	// when WriteStatus is called.
-	writes chan func()
-
-	// block concurrent WriteStatus calls
-	// e.g. grpc/(*serverStream).SendMsg/RecvMsg
-	writeStatusMu sync.Mutex
-
-	// we just mirror the request content-type
-	contentType string
-	// we store both contentType and contentSubtype so we don't keep recreating them
-	// TODO make sure this is consistent across handler_server and http2_server
-	contentSubtype string
-
-	stats stats.Handler
-}
-
-func (ht *serverHandlerTransport) Close() error {
-	ht.closeOnce.Do(ht.closeCloseChanOnce)
-	return nil
-}
-
-func (ht *serverHandlerTransport) closeCloseChanOnce() { close(ht.closedCh) }
-
-func (ht *serverHandlerTransport) RemoteAddr() net.Addr { return strAddr(ht.req.RemoteAddr) }
-
-// strAddr is a net.Addr backed by either a TCP "ip:port" string, or
-// the empty string if unknown.
-type strAddr string
-
-func (a strAddr) Network() string {
-	if a != "" {
-		// Per the documentation on net/http.Request.RemoteAddr, if this is
-		// set, it's set to the IP:port of the peer (hence, TCP):
-		// https://golang.org/pkg/net/http/#Request
-		//
-		// If we want to support Unix sockets later, we can
-		// add our own grpc-specific convention within the
-		// grpc codebase to set RemoteAddr to a different
-		// format, or probably better: we can attach it to the
-		// context and use that from serverHandlerTransport.RemoteAddr.
-		return "tcp"
-	}
-	return ""
-}
-
-func (a strAddr) String() string { return string(a) }
-
-// do runs fn in the ServeHTTP goroutine.
-func (ht *serverHandlerTransport) do(fn func()) error {
-	// Avoid a panic writing to closed channel. Imperfect but maybe good enough.
-	select {
-	case <-ht.closedCh:
-		return ErrConnClosing
-	default:
-		select {
-		case ht.writes <- fn:
-			return nil
-		case <-ht.closedCh:
-			return ErrConnClosing
-		}
-	}
-}
-
-func (ht *serverHandlerTransport) WriteStatus(s *Stream, st *status.Status) error {
-	ht.writeStatusMu.Lock()
-	defer ht.writeStatusMu.Unlock()
-
-	err := ht.do(func() {
-		ht.writeCommonHeaders(s)
-
-		// And flush, in case no header or body has been sent yet.
-		// This forces a separation of headers and trailers if this is the
-		// first call (for example, in end2end tests's TestNoService).
-		ht.rw.(http.Flusher).Flush()
-
-		h := ht.rw.Header()
-		h.Set("Grpc-Status", fmt.Sprintf("%d", st.Code()))
-		if m := st.Message(); m != "" {
-			h.Set("Grpc-Message", encodeGrpcMessage(m))
-		}
-
-		if p := st.Proto(); p != nil && len(p.Details) > 0 {
-			stBytes, err := proto.Marshal(p)
-			if err != nil {
-				// TODO: return error instead, when callers are able to handle it.
-				panic(err)
-			}
-
-			h.Set("Grpc-Status-Details-Bin", encodeBinHeader(stBytes))
-		}
-
-		if md := s.Trailer(); len(md) > 0 {
-			for k, vv := range md {
-				// Clients don't tolerate reading restricted headers after some non restricted ones were sent.
-				if isReservedHeader(k) {
-					continue
-				}
-				for _, v := range vv {
-					// http2 ResponseWriter mechanism to send undeclared Trailers after
-					// the headers have possibly been written.
-					h.Add(http2.TrailerPrefix+k, encodeMetadataHeader(k, v))
-				}
-			}
-		}
-	})
-
-	if err == nil { // transport has not been closed
-		if ht.stats != nil {
-			ht.stats.HandleRPC(s.Context(), &stats.OutTrailer{})
-		}
-		ht.Close()
-		close(ht.writes)
-	}
-	return err
-}
-
-// writeCommonHeaders sets common headers on the first write
-// call (Write, WriteHeader, or WriteStatus).
-func (ht *serverHandlerTransport) writeCommonHeaders(s *Stream) {
-	if ht.didCommonHeaders {
-		return
-	}
-	ht.didCommonHeaders = true
-
-	h := ht.rw.Header()
-	h["Date"] = nil // suppress Date to make tests happy; TODO: restore
-	h.Set("Content-Type", ht.contentType)
-
-	// Predeclare trailers we'll set later in WriteStatus (after the body).
-	// This is a SHOULD in the HTTP RFC, and the way you add (known)
-	// Trailers per the net/http.ResponseWriter contract.
-	// See https://golang.org/pkg/net/http/#ResponseWriter
-	// and https://golang.org/pkg/net/http/#example_ResponseWriter_trailers
-	h.Add("Trailer", "Grpc-Status")
-	h.Add("Trailer", "Grpc-Message")
-	h.Add("Trailer", "Grpc-Status-Details-Bin")
-
-	if s.sendCompress != "" {
-		h.Set("Grpc-Encoding", s.sendCompress)
-	}
-}
-
-func (ht *serverHandlerTransport) Write(s *Stream, hdr []byte, data []byte, opts *Options) error {
-	return ht.do(func() {
-		ht.writeCommonHeaders(s)
-		ht.rw.Write(hdr)
-		ht.rw.Write(data)
-		if !opts.Delay {
-			ht.rw.(http.Flusher).Flush()
-		}
-	})
-}
-
-func (ht *serverHandlerTransport) WriteHeader(s *Stream, md metadata.MD) error {
-	err := ht.do(func() {
-		ht.writeCommonHeaders(s)
-		h := ht.rw.Header()
-		for k, vv := range md {
-			// Clients don't tolerate reading restricted headers after some non restricted ones were sent.
-			if isReservedHeader(k) {
-				continue
-			}
-			for _, v := range vv {
-				v = encodeMetadataHeader(k, v)
-				h.Add(k, v)
-			}
-		}
-		ht.rw.WriteHeader(200)
-		ht.rw.(http.Flusher).Flush()
-	})
-
-	if err == nil {
-		if ht.stats != nil {
-			ht.stats.HandleRPC(s.Context(), &stats.OutHeader{})
-		}
-	}
-	return err
-}
-
-func (ht *serverHandlerTransport) HandleStreams(startStream func(*Stream), traceCtx func(context.Context, string) context.Context) {
-	// With this transport type there will be exactly 1 stream: this HTTP request.
-
-	ctx := contextFromRequest(ht.req)
-	var cancel context.CancelFunc
-	if ht.timeoutSet {
-		ctx, cancel = context.WithTimeout(ctx, ht.timeout)
-	} else {
-		ctx, cancel = context.WithCancel(ctx)
-	}
-
-	// requestOver is closed when either the request's context is done
-	// or the status has been written via WriteStatus.
-	requestOver := make(chan struct{})
-
-	// clientGone receives a single value if peer is gone, either
-	// because the underlying connection is dead or because the
-	// peer sends an http2 RST_STREAM.
-	clientGone := ht.rw.(http.CloseNotifier).CloseNotify()
-	go func() {
-		select {
-		case <-requestOver:
-			return
-		case <-ht.closedCh:
-		case <-clientGone:
-		}
-		cancel()
-	}()
-
-	req := ht.req
-
-	s := &Stream{
-		id:             0, // irrelevant
-		requestRead:    func(int) {},
-		cancel:         cancel,
-		buf:            newRecvBuffer(),
-		st:             ht,
-		method:         req.URL.Path,
-		recvCompress:   req.Header.Get("grpc-encoding"),
-		contentSubtype: ht.contentSubtype,
-	}
-	pr := &peer.Peer{
-		Addr: ht.RemoteAddr(),
-	}
-	if req.TLS != nil {
-		pr.AuthInfo = credentials.TLSInfo{State: *req.TLS}
-	}
-	ctx = metadata.NewIncomingContext(ctx, ht.headerMD)
-	s.ctx = peer.NewContext(ctx, pr)
-	if ht.stats != nil {
-		s.ctx = ht.stats.TagRPC(s.ctx, &stats.RPCTagInfo{FullMethodName: s.method})
-		inHeader := &stats.InHeader{
-			FullMethod:  s.method,
-			RemoteAddr:  ht.RemoteAddr(),
-			Compression: s.recvCompress,
-		}
-		ht.stats.HandleRPC(s.ctx, inHeader)
-	}
-	s.trReader = &transportReader{
-		reader:        &recvBufferReader{ctx: s.ctx, ctxDone: s.ctx.Done(), recv: s.buf},
-		windowHandler: func(int) {},
-	}
-
-	// readerDone is closed when the Body.Read-ing goroutine exits.
-	readerDone := make(chan struct{})
-	go func() {
-		defer close(readerDone)
-
-		// TODO: minimize garbage, optimize recvBuffer code/ownership
-		const readSize = 8196
-		for buf := make([]byte, readSize); ; {
-			n, err := req.Body.Read(buf)
-			if n > 0 {
-				s.buf.put(recvMsg{data: buf[:n:n]})
-				buf = buf[n:]
-			}
-			if err != nil {
-				s.buf.put(recvMsg{err: mapRecvMsgError(err)})
-				return
-			}
-			if len(buf) == 0 {
-				buf = make([]byte, readSize)
-			}
-		}
-	}()
-
-	// startStream is provided by the *grpc.Server's serveStreams.
-	// It starts a goroutine serving s and exits immediately.
-	// The goroutine that is started is the one that then calls
-	// into ht, calling WriteHeader, Write, WriteStatus, Close, etc.
-	startStream(s)
-
-	ht.runStream()
-	close(requestOver)
-
-	// Wait for reading goroutine to finish.
-	req.Body.Close()
-	<-readerDone
-}
-
-func (ht *serverHandlerTransport) runStream() {
-	for {
-		select {
-		case fn, ok := <-ht.writes:
-			if !ok {
-				return
-			}
-			fn()
-		case <-ht.closedCh:
-			return
-		}
-	}
-}
-
-func (ht *serverHandlerTransport) IncrMsgSent() {}
-
-func (ht *serverHandlerTransport) IncrMsgRecv() {}
-
-func (ht *serverHandlerTransport) Drain() {
-	panic("Drain() is not implemented")
-}
-
-// mapRecvMsgError returns the non-nil err into the appropriate
-// error value as expected by callers of *grpc.parser.recvMsg.
-// In particular, in can only be:
-//   * io.EOF
-//   * io.ErrUnexpectedEOF
-//   * of type transport.ConnectionError
-//   * of type transport.StreamError
-func mapRecvMsgError(err error) error {
-	if err == io.EOF || err == io.ErrUnexpectedEOF {
-		return err
-	}
-	if se, ok := err.(http2.StreamError); ok {
-		if code, ok := http2ErrConvTab[se.Code]; ok {
-			return StreamError{
-				Code: code,
-				Desc: se.Error(),
-			}
-		}
-	}
-	return connectionErrorf(true, err, err.Error())
-}
diff --git a/vendor/google.golang.org/grpc/transport/http2_client.go b/vendor/google.golang.org/grpc/transport/http2_client.go
deleted file mode 100644
index eaf007eb0..000000000
--- a/vendor/google.golang.org/grpc/transport/http2_client.go
+++ /dev/null
@@ -1,1298 +0,0 @@
-/*
- *
- * Copyright 2014 gRPC authors.
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *     http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- *
- */
-
-package transport
-
-import (
-	"io"
-	"math"
-	"net"
-	"strings"
-	"sync"
-	"sync/atomic"
-	"time"
-
-	"golang.org/x/net/context"
-	"golang.org/x/net/http2"
-	"golang.org/x/net/http2/hpack"
-
-	"google.golang.org/grpc/codes"
-	"google.golang.org/grpc/credentials"
-	"google.golang.org/grpc/internal/channelz"
-	"google.golang.org/grpc/keepalive"
-	"google.golang.org/grpc/metadata"
-	"google.golang.org/grpc/peer"
-	"google.golang.org/grpc/stats"
-	"google.golang.org/grpc/status"
-)
-
-// http2Client implements the ClientTransport interface with HTTP2.
-type http2Client struct {
-	ctx        context.Context
-	cancel     context.CancelFunc
-	ctxDone    <-chan struct{} // Cache the ctx.Done() chan.
-	userAgent  string
-	md         interface{}
-	conn       net.Conn // underlying communication channel
-	loopy      *loopyWriter
-	remoteAddr net.Addr
-	localAddr  net.Addr
-	authInfo   credentials.AuthInfo // auth info about the connection
-
-	readerDone chan struct{} // sync point to enable testing.
-	writerDone chan struct{} // sync point to enable testing.
-	// goAway is closed to notify the upper layer (i.e., addrConn.transportMonitor)
-	// that the server sent GoAway on this transport.
-	goAway chan struct{}
-	// awakenKeepalive is used to wake up keepalive when after it has gone dormant.
-	awakenKeepalive chan struct{}
-
-	framer *framer
-	// controlBuf delivers all the control related tasks (e.g., window
-	// updates, reset streams, and various settings) to the controller.
-	controlBuf *controlBuffer
-	fc         *trInFlow
-	// The scheme used: https if TLS is on, http otherwise.
-	scheme string
-
-	isSecure bool
-
-	creds []credentials.PerRPCCredentials
-
-	// Boolean to keep track of reading activity on transport.
-	// 1 is true and 0 is false.
-	activity         uint32 // Accessed atomically.
-	kp               keepalive.ClientParameters
-	keepaliveEnabled bool
-
-	statsHandler stats.Handler
-
-	initialWindowSize int32
-
-	bdpEst *bdpEstimator
-	// onSuccess is a callback that client transport calls upon
-	// receiving server preface to signal that a succefull HTTP2
-	// connection was established.
-	onSuccess func()
-
-	maxConcurrentStreams  uint32
-	streamQuota           int64
-	streamsQuotaAvailable chan struct{}
-	waitingStreams        uint32
-	nextID                uint32
-
-	mu            sync.Mutex // guard the following variables
-	state         transportState
-	activeStreams map[uint32]*Stream
-	// prevGoAway ID records the Last-Stream-ID in the previous GOAway frame.
-	prevGoAwayID uint32
-	// goAwayReason records the http2.ErrCode and debug data received with the
-	// GoAway frame.
-	goAwayReason GoAwayReason
-
-	// Fields below are for channelz metric collection.
-	channelzID int64 // channelz unique identification number
-	czmu       sync.RWMutex
-	kpCount    int64
-	// The number of streams that have started, including already finished ones.
-	streamsStarted int64
-	// The number of streams that have ended successfully by receiving EoS bit set
-	// frame from server.
-	streamsSucceeded  int64
-	streamsFailed     int64
-	lastStreamCreated time.Time
-	msgSent           int64
-	msgRecv           int64
-	lastMsgSent       time.Time
-	lastMsgRecv       time.Time
-}
-
-func dial(ctx context.Context, fn func(context.Context, string) (net.Conn, error), addr string) (net.Conn, error) {
-	if fn != nil {
-		return fn(ctx, addr)
-	}
-	return dialContext(ctx, "tcp", addr)
-}
-
-func isTemporary(err error) bool {
-	switch err := err.(type) {
-	case interface {
-		Temporary() bool
-	}:
-		return err.Temporary()
-	case interface {
-		Timeout() bool
-	}:
-		// Timeouts may be resolved upon retry, and are thus treated as
-		// temporary.
-		return err.Timeout()
-	}
-	return true
-}
-
-// newHTTP2Client constructs a connected ClientTransport to addr based on HTTP2
-// and starts to receive messages on it. Non-nil error returns if construction
-// fails.
-func newHTTP2Client(connectCtx, ctx context.Context, addr TargetInfo, opts ConnectOptions, onSuccess func()) (_ ClientTransport, err error) {
-	scheme := "http"
-	ctx, cancel := context.WithCancel(ctx)
-	defer func() {
-		if err != nil {
-			cancel()
-		}
-	}()
-
-	conn, err := dial(connectCtx, opts.Dialer, addr.Addr)
-	if err != nil {
-		if opts.FailOnNonTempDialError {
-			return nil, connectionErrorf(isTemporary(err), err, "transport: error while dialing: %v", err)
-		}
-		return nil, connectionErrorf(true, err, "transport: Error while dialing %v", err)
-	}
-	// Any further errors will close the underlying connection
-	defer func(conn net.Conn) {
-		if err != nil {
-			conn.Close()
-		}
-	}(conn)
-	var (
-		isSecure bool
-		authInfo credentials.AuthInfo
-	)
-	if creds := opts.TransportCredentials; creds != nil {
-		scheme = "https"
-		conn, authInfo, err = creds.ClientHandshake(connectCtx, addr.Authority, conn)
-		if err != nil {
-			return nil, connectionErrorf(isTemporary(err), err, "transport: authentication handshake failed: %v", err)
-		}
-		isSecure = true
-	}
-	kp := opts.KeepaliveParams
-	// Validate keepalive parameters.
-	if kp.Time == 0 {
-		kp.Time = defaultClientKeepaliveTime
-	}
-	if kp.Timeout == 0 {
-		kp.Timeout = defaultClientKeepaliveTimeout
-	}
-	dynamicWindow := true
-	icwz := int32(initialWindowSize)
-	if opts.InitialConnWindowSize >= defaultWindowSize {
-		icwz = opts.InitialConnWindowSize
-		dynamicWindow = false
-	}
-	writeBufSize := defaultWriteBufSize
-	if opts.WriteBufferSize > 0 {
-		writeBufSize = opts.WriteBufferSize
-	}
-	readBufSize := defaultReadBufSize
-	if opts.ReadBufferSize > 0 {
-		readBufSize = opts.ReadBufferSize
-	}
-	t := &http2Client{
-		ctx:                   ctx,
-		ctxDone:               ctx.Done(), // Cache Done chan.
-		cancel:                cancel,
-		userAgent:             opts.UserAgent,
-		md:                    addr.Metadata,
-		conn:                  conn,
-		remoteAddr:            conn.RemoteAddr(),
-		localAddr:             conn.LocalAddr(),
-		authInfo:              authInfo,
-		readerDone:            make(chan struct{}),
-		writerDone:            make(chan struct{}),
-		goAway:                make(chan struct{}),
-		awakenKeepalive:       make(chan struct{}, 1),
-		framer:                newFramer(conn, writeBufSize, readBufSize),
-		fc:                    &trInFlow{limit: uint32(icwz)},
-		scheme:                scheme,
-		activeStreams:         make(map[uint32]*Stream),
-		isSecure:              isSecure,
-		creds:                 opts.PerRPCCredentials,
-		kp:                    kp,
-		statsHandler:          opts.StatsHandler,
-		initialWindowSize:     initialWindowSize,
-		onSuccess:             onSuccess,
-		nextID:                1,
-		maxConcurrentStreams:  defaultMaxStreamsClient,
-		streamQuota:           defaultMaxStreamsClient,
-		streamsQuotaAvailable: make(chan struct{}, 1),
-	}
-	t.controlBuf = newControlBuffer(t.ctxDone)
-	if opts.InitialWindowSize >= defaultWindowSize {
-		t.initialWindowSize = opts.InitialWindowSize
-		dynamicWindow = false
-	}
-	if dynamicWindow {
-		t.bdpEst = &bdpEstimator{
-			bdp:               initialWindowSize,
-			updateFlowControl: t.updateFlowControl,
-		}
-	}
-	// Make sure awakenKeepalive can't be written upon.
-	// keepalive routine will make it writable, if need be.
-	t.awakenKeepalive <- struct{}{}
-	if t.statsHandler != nil {
-		t.ctx = t.statsHandler.TagConn(t.ctx, &stats.ConnTagInfo{
-			RemoteAddr: t.remoteAddr,
-			LocalAddr:  t.localAddr,
-		})
-		connBegin := &stats.ConnBegin{
-			Client: true,
-		}
-		t.statsHandler.HandleConn(t.ctx, connBegin)
-	}
-	if channelz.IsOn() {
-		t.channelzID = channelz.RegisterNormalSocket(t, opts.ChannelzParentID, "")
-	}
-	if t.kp.Time != infinity {
-		t.keepaliveEnabled = true
-		go t.keepalive()
-	}
-	// Start the reader goroutine for incoming message. Each transport has
-	// a dedicated goroutine which reads HTTP2 frame from network. Then it
-	// dispatches the frame to the corresponding stream entity.
-	go t.reader()
-	// Send connection preface to server.
-	n, err := t.conn.Write(clientPreface)
-	if err != nil {
-		t.Close()
-		return nil, connectionErrorf(true, err, "transport: failed to write client preface: %v", err)
-	}
-	if n != len(clientPreface) {
-		t.Close()
-		return nil, connectionErrorf(true, err, "transport: preface mismatch, wrote %d bytes; want %d", n, len(clientPreface))
-	}
-	if t.initialWindowSize != defaultWindowSize {
-		err = t.framer.fr.WriteSettings(http2.Setting{
-			ID:  http2.SettingInitialWindowSize,
-			Val: uint32(t.initialWindowSize),
-		})
-	} else {
-		err = t.framer.fr.WriteSettings()
-	}
-	if err != nil {
-		t.Close()
-		return nil, connectionErrorf(true, err, "transport: failed to write initial settings frame: %v", err)
-	}
-	// Adjust the connection flow control window if needed.
-	if delta := uint32(icwz - defaultWindowSize); delta > 0 {
-		if err := t.framer.fr.WriteWindowUpdate(0, delta); err != nil {
-			t.Close()
-			return nil, connectionErrorf(true, err, "transport: failed to write window update: %v", err)
-		}
-	}
-	t.framer.writer.Flush()
-	go func() {
-		t.loopy = newLoopyWriter(clientSide, t.framer, t.controlBuf, t.bdpEst)
-		err := t.loopy.run()
-		if err != nil {
-			errorf("transport: loopyWriter.run returning. Err: %v", err)
-		}
-		// If it's a connection error, let reader goroutine handle it
-		// since there might be data in the buffers.
-		if _, ok := err.(net.Error); !ok {
-			t.conn.Close()
-		}
-		close(t.writerDone)
-	}()
-	return t, nil
-}
-
-func (t *http2Client) newStream(ctx context.Context, callHdr *CallHdr) *Stream {
-	// TODO(zhaoq): Handle uint32 overflow of Stream.id.
-	s := &Stream{
-		done:           make(chan struct{}),
-		method:         callHdr.Method,
-		sendCompress:   callHdr.SendCompress,
-		buf:            newRecvBuffer(),
-		headerChan:     make(chan struct{}),
-		contentSubtype: callHdr.ContentSubtype,
-	}
-	s.wq = newWriteQuota(defaultWriteQuota, s.done)
-	s.requestRead = func(n int) {
-		t.adjustWindow(s, uint32(n))
-	}
-	// The client side stream context should have exactly the same life cycle with the user provided context.
-	// That means, s.ctx should be read-only. And s.ctx is done iff ctx is done.
-	// So we use the original context here instead of creating a copy.
-	s.ctx = ctx
-	s.trReader = &transportReader{
-		reader: &recvBufferReader{
-			ctx:     s.ctx,
-			ctxDone: s.ctx.Done(),
-			recv:    s.buf,
-		},
-		windowHandler: func(n int) {
-			t.updateWindow(s, uint32(n))
-		},
-	}
-	return s
-}
-
-func (t *http2Client) getPeer() *peer.Peer {
-	pr := &peer.Peer{
-		Addr: t.remoteAddr,
-	}
-	// Attach Auth info if there is any.
-	if t.authInfo != nil {
-		pr.AuthInfo = t.authInfo
-	}
-	return pr
-}
-
-func (t *http2Client) createHeaderFields(ctx context.Context, callHdr *CallHdr) ([]hpack.HeaderField, error) {
-	aud := t.createAudience(callHdr)
-	authData, err := t.getTrAuthData(ctx, aud)
-	if err != nil {
-		return nil, err
-	}
-	callAuthData, err := t.getCallAuthData(ctx, aud, callHdr)
-	if err != nil {
-		return nil, err
-	}
-	// TODO(mmukhi): Benchmark if the performance gets better if count the metadata and other header fields
-	// first and create a slice of that exact size.
-	// Make the slice of certain predictable size to reduce allocations made by append.
-	hfLen := 7 // :method, :scheme, :path, :authority, content-type, user-agent, te
-	hfLen += len(authData) + len(callAuthData)
-	headerFields := make([]hpack.HeaderField, 0, hfLen)
-	headerFields = append(headerFields, hpack.HeaderField{Name: ":method", Value: "POST"})
-	headerFields = append(headerFields, hpack.HeaderField{Name: ":scheme", Value: t.scheme})
-	headerFields = append(headerFields, hpack.HeaderField{Name: ":path", Value: callHdr.Method})
-	headerFields = append(headerFields, hpack.HeaderField{Name: ":authority", Value: callHdr.Host})
-	headerFields = append(headerFields, hpack.HeaderField{Name: "content-type", Value: contentType(callHdr.ContentSubtype)})
-	headerFields = append(headerFields, hpack.HeaderField{Name: "user-agent", Value: t.userAgent})
-	headerFields = append(headerFields, hpack.HeaderField{Name: "te", Value: "trailers"})
-
-	if callHdr.SendCompress != "" {
-		headerFields = append(headerFields, hpack.HeaderField{Name: "grpc-encoding", Value: callHdr.SendCompress})
-	}
-	if dl, ok := ctx.Deadline(); ok {
-		// Send out timeout regardless its value. The server can detect timeout context by itself.
-		// TODO(mmukhi): Perhaps this field should be updated when actually writing out to the wire.
-		timeout := dl.Sub(time.Now())
-		headerFields = append(headerFields, hpack.HeaderField{Name: "grpc-timeout", Value: encodeTimeout(timeout)})
-	}
-	for k, v := range authData {
-		headerFields = append(headerFields, hpack.HeaderField{Name: k, Value: encodeMetadataHeader(k, v)})
-	}
-	for k, v := range callAuthData {
-		headerFields = append(headerFields, hpack.HeaderField{Name: k, Value: encodeMetadataHeader(k, v)})
-	}
-	if b := stats.OutgoingTags(ctx); b != nil {
-		headerFields = append(headerFields, hpack.HeaderField{Name: "grpc-tags-bin", Value: encodeBinHeader(b)})
-	}
-	if b := stats.OutgoingTrace(ctx); b != nil {
-		headerFields = append(headerFields, hpack.HeaderField{Name: "grpc-trace-bin", Value: encodeBinHeader(b)})
-	}
-
-	if md, added, ok := metadata.FromOutgoingContextRaw(ctx); ok {
-		var k string
-		for _, vv := range added {
-			for i, v := range vv {
-				if i%2 == 0 {
-					k = v
-					continue
-				}
-				// HTTP doesn't allow you to set pseudoheaders after non pseudoheaders were set.
-				if isReservedHeader(k) {
-					continue
-				}
-				headerFields = append(headerFields, hpack.HeaderField{Name: strings.ToLower(k), Value: encodeMetadataHeader(k, v)})
-			}
-		}
-		for k, vv := range md {
-			// HTTP doesn't allow you to set pseudoheaders after non pseudoheaders were set.
-			if isReservedHeader(k) {
-				continue
-			}
-			for _, v := range vv {
-				headerFields = append(headerFields, hpack.HeaderField{Name: k, Value: encodeMetadataHeader(k, v)})
-			}
-		}
-	}
-	if md, ok := t.md.(*metadata.MD); ok {
-		for k, vv := range *md {
-			if isReservedHeader(k) {
-				continue
-			}
-			for _, v := range vv {
-				headerFields = append(headerFields, hpack.HeaderField{Name: k, Value: encodeMetadataHeader(k, v)})
-			}
-		}
-	}
-	return headerFields, nil
-}
-
-func (t *http2Client) createAudience(callHdr *CallHdr) string {
-	// Create an audience string only if needed.
-	if len(t.creds) == 0 && callHdr.Creds == nil {
-		return ""
-	}
-	// Construct URI required to get auth request metadata.
-	// Omit port if it is the default one.
-	host := strings.TrimSuffix(callHdr.Host, ":443")
-	pos := strings.LastIndex(callHdr.Method, "/")
-	if pos == -1 {
-		pos = len(callHdr.Method)
-	}
-	return "https://" + host + callHdr.Method[:pos]
-}
-
-func (t *http2Client) getTrAuthData(ctx context.Context, audience string) (map[string]string, error) {
-	authData := map[string]string{}
-	for _, c := range t.creds {
-		data, err := c.GetRequestMetadata(ctx, audience)
-		if err != nil {
-			if _, ok := status.FromError(err); ok {
-				return nil, err
-			}
-
-			return nil, streamErrorf(codes.Unauthenticated, "transport: %v", err)
-		}
-		for k, v := range data {
-			// Capital header names are illegal in HTTP/2.
-			k = strings.ToLower(k)
-			authData[k] = v
-		}
-	}
-	return authData, nil
-}
-
-func (t *http2Client) getCallAuthData(ctx context.Context, audience string, callHdr *CallHdr) (map[string]string, error) {
-	callAuthData := map[string]string{}
-	// Check if credentials.PerRPCCredentials were provided via call options.
-	// Note: if these credentials are provided both via dial options and call
-	// options, then both sets of credentials will be applied.
-	if callCreds := callHdr.Creds; callCreds != nil {
-		if !t.isSecure && callCreds.RequireTransportSecurity() {
-			return nil, streamErrorf(codes.Unauthenticated, "transport: cannot send secure credentials on an insecure connection")
-		}
-		data, err := callCreds.GetRequestMetadata(ctx, audience)
-		if err != nil {
-			return nil, streamErrorf(codes.Internal, "transport: %v", err)
-		}
-		for k, v := range data {
-			// Capital header names are illegal in HTTP/2
-			k = strings.ToLower(k)
-			callAuthData[k] = v
-		}
-	}
-	return callAuthData, nil
-}
-
-// NewStream creates a stream and registers it into the transport as "active"
-// streams.
-func (t *http2Client) NewStream(ctx context.Context, callHdr *CallHdr) (_ *Stream, err error) {
-	ctx = peer.NewContext(ctx, t.getPeer())
-	headerFields, err := t.createHeaderFields(ctx, callHdr)
-	if err != nil {
-		return nil, err
-	}
-	s := t.newStream(ctx, callHdr)
-	cleanup := func(err error) {
-		if s.swapState(streamDone) == streamDone {
-			// If it was already done, return.
-			return
-		}
-		// The stream was unprocessed by the server.
-		atomic.StoreUint32(&s.unprocessed, 1)
-		s.write(recvMsg{err: err})
-		close(s.done)
-		// If headerChan isn't closed, then close it.
-		if atomic.SwapUint32(&s.headerDone, 1) == 0 {
-			close(s.headerChan)
-		}
-
-	}
-	hdr := &headerFrame{
-		hf:        headerFields,
-		endStream: false,
-		initStream: func(id uint32) (bool, error) {
-			t.mu.Lock()
-			if state := t.state; state != reachable {
-				t.mu.Unlock()
-				// Do a quick cleanup.
-				err := error(errStreamDrain)
-				if state == closing {
-					err = ErrConnClosing
-				}
-				cleanup(err)
-				return false, err
-			}
-			t.activeStreams[id] = s
-			if channelz.IsOn() {
-				t.czmu.Lock()
-				t.streamsStarted++
-				t.lastStreamCreated = time.Now()
-				t.czmu.Unlock()
-			}
-			var sendPing bool
-			// If the number of active streams change from 0 to 1, then check if keepalive
-			// has gone dormant. If so, wake it up.
-			if len(t.activeStreams) == 1 && t.keepaliveEnabled {
-				select {
-				case t.awakenKeepalive <- struct{}{}:
-					sendPing = true
-					// Fill the awakenKeepalive channel again as this channel must be
-					// kept non-writable except at the point that the keepalive()
-					// goroutine is waiting either to be awaken or shutdown.
-					t.awakenKeepalive <- struct{}{}
-				default:
-				}
-			}
-			t.mu.Unlock()
-			return sendPing, nil
-		},
-		onOrphaned: cleanup,
-		wq:         s.wq,
-	}
-	firstTry := true
-	var ch chan struct{}
-	checkForStreamQuota := func(it interface{}) bool {
-		if t.streamQuota <= 0 { // Can go negative if server decreases it.
-			if firstTry {
-				t.waitingStreams++
-			}
-			ch = t.streamsQuotaAvailable
-			return false
-		}
-		if !firstTry {
-			t.waitingStreams--
-		}
-		t.streamQuota--
-		h := it.(*headerFrame)
-		h.streamID = t.nextID
-		t.nextID += 2
-		s.id = h.streamID
-		s.fc = &inFlow{limit: uint32(t.initialWindowSize)}
-		if t.streamQuota > 0 && t.waitingStreams > 0 {
-			select {
-			case t.streamsQuotaAvailable <- struct{}{}:
-			default:
-			}
-		}
-		return true
-	}
-	for {
-		success, err := t.controlBuf.executeAndPut(checkForStreamQuota, hdr)
-		if err != nil {
-			return nil, err
-		}
-		if success {
-			break
-		}
-		firstTry = false
-		select {
-		case <-ch:
-		case <-s.ctx.Done():
-			return nil, ContextErr(s.ctx.Err())
-		case <-t.goAway:
-			return nil, errStreamDrain
-		case <-t.ctx.Done():
-			return nil, ErrConnClosing
-		}
-	}
-	if t.statsHandler != nil {
-		outHeader := &stats.OutHeader{
-			Client:      true,
-			FullMethod:  callHdr.Method,
-			RemoteAddr:  t.remoteAddr,
-			LocalAddr:   t.localAddr,
-			Compression: callHdr.SendCompress,
-		}
-		t.statsHandler.HandleRPC(s.ctx, outHeader)
-	}
-	return s, nil
-}
-
-// CloseStream clears the footprint of a stream when the stream is not needed any more.
-// This must not be executed in reader's goroutine.
-func (t *http2Client) CloseStream(s *Stream, err error) {
-	var (
-		rst     bool
-		rstCode http2.ErrCode
-	)
-	if err != nil {
-		rst = true
-		rstCode = http2.ErrCodeCancel
-	}
-	t.closeStream(s, err, rst, rstCode, nil, nil, false)
-}
-
-func (t *http2Client) closeStream(s *Stream, err error, rst bool, rstCode http2.ErrCode, st *status.Status, mdata map[string][]string, eosReceived bool) {
-	// Set stream status to done.
-	if s.swapState(streamDone) == streamDone {
-		// If it was already done, return.
-		return
-	}
-	// status and trailers can be updated here without any synchronization because the stream goroutine will
-	// only read it after it sees an io.EOF error from read or write and we'll write those errors
-	// only after updating this.
-	s.status = st
-	if len(mdata) > 0 {
-		s.trailer = mdata
-	}
-	if err != nil {
-		// This will unblock reads eventually.
-		s.write(recvMsg{err: err})
-	}
-	// This will unblock write.
-	close(s.done)
-	// If headerChan isn't closed, then close it.
-	if atomic.SwapUint32(&s.headerDone, 1) == 0 {
-		close(s.headerChan)
-	}
-	cleanup := &cleanupStream{
-		streamID: s.id,
-		onWrite: func() {
-			t.mu.Lock()
-			if t.activeStreams != nil {
-				delete(t.activeStreams, s.id)
-			}
-			t.mu.Unlock()
-			if channelz.IsOn() {
-				t.czmu.Lock()
-				if eosReceived {
-					t.streamsSucceeded++
-				} else {
-					t.streamsFailed++
-				}
-				t.czmu.Unlock()
-			}
-		},
-		rst:     rst,
-		rstCode: rstCode,
-	}
-	addBackStreamQuota := func(interface{}) bool {
-		t.streamQuota++
-		if t.streamQuota > 0 && t.waitingStreams > 0 {
-			select {
-			case t.streamsQuotaAvailable <- struct{}{}:
-			default:
-			}
-		}
-		return true
-	}
-	t.controlBuf.executeAndPut(addBackStreamQuota, cleanup)
-}
-
-// Close kicks off the shutdown process of the transport. This should be called
-// only once on a transport. Once it is called, the transport should not be
-// accessed any more.
-func (t *http2Client) Close() error {
-	t.mu.Lock()
-	// Make sure we only Close once.
-	if t.state == closing {
-		t.mu.Unlock()
-		return nil
-	}
-	t.state = closing
-	streams := t.activeStreams
-	t.activeStreams = nil
-	t.mu.Unlock()
-	t.controlBuf.finish()
-	t.cancel()
-	err := t.conn.Close()
-	if channelz.IsOn() {
-		channelz.RemoveEntry(t.channelzID)
-	}
-	// Notify all active streams.
-	for _, s := range streams {
-		t.closeStream(s, ErrConnClosing, false, http2.ErrCodeNo, nil, nil, false)
-	}
-	if t.statsHandler != nil {
-		connEnd := &stats.ConnEnd{
-			Client: true,
-		}
-		t.statsHandler.HandleConn(t.ctx, connEnd)
-	}
-	return err
-}
-
-// GracefulClose sets the state to draining, which prevents new streams from
-// being created and causes the transport to be closed when the last active
-// stream is closed.  If there are no active streams, the transport is closed
-// immediately.  This does nothing if the transport is already draining or
-// closing.
-func (t *http2Client) GracefulClose() error {
-	t.mu.Lock()
-	// Make sure we move to draining only from active.
-	if t.state == draining || t.state == closing {
-		t.mu.Unlock()
-		return nil
-	}
-	t.state = draining
-	active := len(t.activeStreams)
-	t.mu.Unlock()
-	if active == 0 {
-		return t.Close()
-	}
-	t.controlBuf.put(&incomingGoAway{})
-	return nil
-}
-
-// Write formats the data into HTTP2 data frame(s) and sends it out. The caller
-// should proceed only if Write returns nil.
-func (t *http2Client) Write(s *Stream, hdr []byte, data []byte, opts *Options) error {
-	if opts.Last {
-		// If it's the last message, update stream state.
-		if !s.compareAndSwapState(streamActive, streamWriteDone) {
-			return errStreamDone
-		}
-	} else if s.getState() != streamActive {
-		return errStreamDone
-	}
-	df := &dataFrame{
-		streamID:  s.id,
-		endStream: opts.Last,
-	}
-	if hdr != nil || data != nil { // If it's not an empty data frame.
-		// Add some data to grpc message header so that we can equally
-		// distribute bytes across frames.
-		emptyLen := http2MaxFrameLen - len(hdr)
-		if emptyLen > len(data) {
-			emptyLen = len(data)
-		}
-		hdr = append(hdr, data[:emptyLen]...)
-		data = data[emptyLen:]
-		df.h, df.d = hdr, data
-		// TODO(mmukhi): The above logic in this if can be moved to loopyWriter's data handler.
-		if err := s.wq.get(int32(len(hdr) + len(data))); err != nil {
-			return err
-		}
-	}
-	return t.controlBuf.put(df)
-}
-
-func (t *http2Client) getStream(f http2.Frame) (*Stream, bool) {
-	t.mu.Lock()
-	defer t.mu.Unlock()
-	s, ok := t.activeStreams[f.Header().StreamID]
-	return s, ok
-}
-
-// adjustWindow sends out extra window update over the initial window size
-// of stream if the application is requesting data larger in size than
-// the window.
-func (t *http2Client) adjustWindow(s *Stream, n uint32) {
-	if w := s.fc.maybeAdjust(n); w > 0 {
-		t.controlBuf.put(&outgoingWindowUpdate{streamID: s.id, increment: w})
-	}
-}
-
-// updateWindow adjusts the inbound quota for the stream.
-// Window updates will be sent out when the cumulative quota
-// exceeds the corresponding threshold.
-func (t *http2Client) updateWindow(s *Stream, n uint32) {
-	if w := s.fc.onRead(n); w > 0 {
-		t.controlBuf.put(&outgoingWindowUpdate{streamID: s.id, increment: w})
-	}
-}
-
-// updateFlowControl updates the incoming flow control windows
-// for the transport and the stream based on the current bdp
-// estimation.
-func (t *http2Client) updateFlowControl(n uint32) {
-	t.mu.Lock()
-	for _, s := range t.activeStreams {
-		s.fc.newLimit(n)
-	}
-	t.mu.Unlock()
-	updateIWS := func(interface{}) bool {
-		t.initialWindowSize = int32(n)
-		return true
-	}
-	t.controlBuf.executeAndPut(updateIWS, &outgoingWindowUpdate{streamID: 0, increment: t.fc.newLimit(n)})
-	t.controlBuf.put(&outgoingSettings{
-		ss: []http2.Setting{
-			{
-				ID:  http2.SettingInitialWindowSize,
-				Val: n,
-			},
-		},
-	})
-}
-
-func (t *http2Client) handleData(f *http2.DataFrame) {
-	size := f.Header().Length
-	var sendBDPPing bool
-	if t.bdpEst != nil {
-		sendBDPPing = t.bdpEst.add(size)
-	}
-	// Decouple connection's flow control from application's read.
-	// An update on connection's flow control should not depend on
-	// whether user application has read the data or not. Such a
-	// restriction is already imposed on the stream's flow control,
-	// and therefore the sender will be blocked anyways.
-	// Decoupling the connection flow control will prevent other
-	// active(fast) streams from starving in presence of slow or
-	// inactive streams.
-	//
-	if w := t.fc.onData(size); w > 0 {
-		t.controlBuf.put(&outgoingWindowUpdate{
-			streamID:  0,
-			increment: w,
-		})
-	}
-	if sendBDPPing {
-		// Avoid excessive ping detection (e.g. in an L7 proxy)
-		// by sending a window update prior to the BDP ping.
-
-		if w := t.fc.reset(); w > 0 {
-			t.controlBuf.put(&outgoingWindowUpdate{
-				streamID:  0,
-				increment: w,
-			})
-		}
-
-		t.controlBuf.put(bdpPing)
-	}
-	// Select the right stream to dispatch.
-	s, ok := t.getStream(f)
-	if !ok {
-		return
-	}
-	if size > 0 {
-		if err := s.fc.onData(size); err != nil {
-			t.closeStream(s, io.EOF, true, http2.ErrCodeFlowControl, status.New(codes.Internal, err.Error()), nil, false)
-			return
-		}
-		if f.Header().Flags.Has(http2.FlagDataPadded) {
-			if w := s.fc.onRead(size - uint32(len(f.Data()))); w > 0 {
-				t.controlBuf.put(&outgoingWindowUpdate{s.id, w})
-			}
-		}
-		// TODO(bradfitz, zhaoq): A copy is required here because there is no
-		// guarantee f.Data() is consumed before the arrival of next frame.
-		// Can this copy be eliminated?
-		if len(f.Data()) > 0 {
-			data := make([]byte, len(f.Data()))
-			copy(data, f.Data())
-			s.write(recvMsg{data: data})
-		}
-	}
-	// The server has closed the stream without sending trailers.  Record that
-	// the read direction is closed, and set the status appropriately.
-	if f.FrameHeader.Flags.Has(http2.FlagDataEndStream) {
-		t.closeStream(s, io.EOF, false, http2.ErrCodeNo, status.New(codes.Internal, "server closed the stream without sending trailers"), nil, true)
-	}
-}
-
-func (t *http2Client) handleRSTStream(f *http2.RSTStreamFrame) {
-	s, ok := t.getStream(f)
-	if !ok {
-		return
-	}
-	if f.ErrCode == http2.ErrCodeRefusedStream {
-		// The stream was unprocessed by the server.
-		atomic.StoreUint32(&s.unprocessed, 1)
-	}
-	statusCode, ok := http2ErrConvTab[f.ErrCode]
-	if !ok {
-		warningf("transport: http2Client.handleRSTStream found no mapped gRPC status for the received http2 error %v", f.ErrCode)
-		statusCode = codes.Unknown
-	}
-	t.closeStream(s, io.EOF, false, http2.ErrCodeNo, status.Newf(statusCode, "stream terminated by RST_STREAM with error code: %v", f.ErrCode), nil, false)
-}
-
-func (t *http2Client) handleSettings(f *http2.SettingsFrame, isFirst bool) {
-	if f.IsAck() {
-		return
-	}
-	var maxStreams *uint32
-	var ss []http2.Setting
-	f.ForeachSetting(func(s http2.Setting) error {
-		if s.ID == http2.SettingMaxConcurrentStreams {
-			maxStreams = new(uint32)
-			*maxStreams = s.Val
-			return nil
-		}
-		ss = append(ss, s)
-		return nil
-	})
-	if isFirst && maxStreams == nil {
-		maxStreams = new(uint32)
-		*maxStreams = math.MaxUint32
-	}
-	sf := &incomingSettings{
-		ss: ss,
-	}
-	if maxStreams == nil {
-		t.controlBuf.put(sf)
-		return
-	}
-	updateStreamQuota := func(interface{}) bool {
-		delta := int64(*maxStreams) - int64(t.maxConcurrentStreams)
-		t.maxConcurrentStreams = *maxStreams
-		t.streamQuota += delta
-		if delta > 0 && t.waitingStreams > 0 {
-			close(t.streamsQuotaAvailable) // wake all of them up.
-			t.streamsQuotaAvailable = make(chan struct{}, 1)
-		}
-		return true
-	}
-	t.controlBuf.executeAndPut(updateStreamQuota, sf)
-}
-
-func (t *http2Client) handlePing(f *http2.PingFrame) {
-	if f.IsAck() {
-		// Maybe it's a BDP ping.
-		if t.bdpEst != nil {
-			t.bdpEst.calculate(f.Data)
-		}
-		return
-	}
-	pingAck := &ping{ack: true}
-	copy(pingAck.data[:], f.Data[:])
-	t.controlBuf.put(pingAck)
-}
-
-func (t *http2Client) handleGoAway(f *http2.GoAwayFrame) {
-	t.mu.Lock()
-	if t.state == closing {
-		t.mu.Unlock()
-		return
-	}
-	if f.ErrCode == http2.ErrCodeEnhanceYourCalm {
-		infof("Client received GoAway with http2.ErrCodeEnhanceYourCalm.")
-	}
-	id := f.LastStreamID
-	if id > 0 && id%2 != 1 {
-		t.mu.Unlock()
-		t.Close()
-		return
-	}
-	// A client can receive multiple GoAways from the server (see
-	// https://github.com/grpc/grpc-go/issues/1387).  The idea is that the first
-	// GoAway will be sent with an ID of MaxInt32 and the second GoAway will be
-	// sent after an RTT delay with the ID of the last stream the server will
-	// process.
-	//
-	// Therefore, when we get the first GoAway we don't necessarily close any
-	// streams. While in case of second GoAway we close all streams created after
-	// the GoAwayId. This way streams that were in-flight while the GoAway from
-	// server was being sent don't get killed.
-	select {
-	case <-t.goAway: // t.goAway has been closed (i.e.,multiple GoAways).
-		// If there are multiple GoAways the first one should always have an ID greater than the following ones.
-		if id > t.prevGoAwayID {
-			t.mu.Unlock()
-			t.Close()
-			return
-		}
-	default:
-		t.setGoAwayReason(f)
-		close(t.goAway)
-		t.state = draining
-		t.controlBuf.put(&incomingGoAway{})
-	}
-	// All streams with IDs greater than the GoAwayId
-	// and smaller than the previous GoAway ID should be killed.
-	upperLimit := t.prevGoAwayID
-	if upperLimit == 0 { // This is the first GoAway Frame.
-		upperLimit = math.MaxUint32 // Kill all streams after the GoAway ID.
-	}
-	for streamID, stream := range t.activeStreams {
-		if streamID > id && streamID <= upperLimit {
-			// The stream was unprocessed by the server.
-			atomic.StoreUint32(&stream.unprocessed, 1)
-			t.closeStream(stream, errStreamDrain, false, http2.ErrCodeNo, statusGoAway, nil, false)
-		}
-	}
-	t.prevGoAwayID = id
-	active := len(t.activeStreams)
-	t.mu.Unlock()
-	if active == 0 {
-		t.Close()
-	}
-}
-
-// setGoAwayReason sets the value of t.goAwayReason based
-// on the GoAway frame received.
-// It expects a lock on transport's mutext to be held by
-// the caller.
-func (t *http2Client) setGoAwayReason(f *http2.GoAwayFrame) {
-	t.goAwayReason = GoAwayNoReason
-	switch f.ErrCode {
-	case http2.ErrCodeEnhanceYourCalm:
-		if string(f.DebugData()) == "too_many_pings" {
-			t.goAwayReason = GoAwayTooManyPings
-		}
-	}
-}
-
-func (t *http2Client) GetGoAwayReason() GoAwayReason {
-	t.mu.Lock()
-	defer t.mu.Unlock()
-	return t.goAwayReason
-}
-
-func (t *http2Client) handleWindowUpdate(f *http2.WindowUpdateFrame) {
-	t.controlBuf.put(&incomingWindowUpdate{
-		streamID:  f.Header().StreamID,
-		increment: f.Increment,
-	})
-}
-
-// operateHeaders takes action on the decoded headers.
-func (t *http2Client) operateHeaders(frame *http2.MetaHeadersFrame) {
-	s, ok := t.getStream(frame)
-	if !ok {
-		return
-	}
-	atomic.StoreUint32(&s.bytesReceived, 1)
-	var state decodeState
-	if err := state.decodeResponseHeader(frame); err != nil {
-		t.closeStream(s, err, true, http2.ErrCodeProtocol, nil, nil, false)
-		// Something wrong. Stops reading even when there is remaining.
-		return
-	}
-
-	endStream := frame.StreamEnded()
-	var isHeader bool
-	defer func() {
-		if t.statsHandler != nil {
-			if isHeader {
-				inHeader := &stats.InHeader{
-					Client:     true,
-					WireLength: int(frame.Header().Length),
-				}
-				t.statsHandler.HandleRPC(s.ctx, inHeader)
-			} else {
-				inTrailer := &stats.InTrailer{
-					Client:     true,
-					WireLength: int(frame.Header().Length),
-				}
-				t.statsHandler.HandleRPC(s.ctx, inTrailer)
-			}
-		}
-	}()
-	// If headers haven't been received yet.
-	if atomic.SwapUint32(&s.headerDone, 1) == 0 {
-		if !endStream {
-			// Headers frame is not actually a trailers-only frame.
-			isHeader = true
-			// These values can be set without any synchronization because
-			// stream goroutine will read it only after seeing a closed
-			// headerChan which we'll close after setting this.
-			s.recvCompress = state.encoding
-			if len(state.mdata) > 0 {
-				s.header = state.mdata
-			}
-		}
-		close(s.headerChan)
-	}
-	if !endStream {
-		return
-	}
-	t.closeStream(s, io.EOF, false, http2.ErrCodeNo, state.status(), state.mdata, true)
-}
-
-// reader runs as a separate goroutine in charge of reading data from network
-// connection.
-//
-// TODO(zhaoq): currently one reader per transport. Investigate whether this is
-// optimal.
-// TODO(zhaoq): Check the validity of the incoming frame sequence.
-func (t *http2Client) reader() {
-	defer close(t.readerDone)
-	// Check the validity of server preface.
-	frame, err := t.framer.fr.ReadFrame()
-	if err != nil {
-		t.Close()
-		return
-	}
-	if t.keepaliveEnabled {
-		atomic.CompareAndSwapUint32(&t.activity, 0, 1)
-	}
-	sf, ok := frame.(*http2.SettingsFrame)
-	if !ok {
-		t.Close()
-		return
-	}
-	t.onSuccess()
-	t.handleSettings(sf, true)
-
-	// loop to keep reading incoming messages on this transport.
-	for {
-		frame, err := t.framer.fr.ReadFrame()
-		if t.keepaliveEnabled {
-			atomic.CompareAndSwapUint32(&t.activity, 0, 1)
-		}
-		if err != nil {
-			// Abort an active stream if the http2.Framer returns a
-			// http2.StreamError. This can happen only if the server's response
-			// is malformed http2.
-			if se, ok := err.(http2.StreamError); ok {
-				t.mu.Lock()
-				s := t.activeStreams[se.StreamID]
-				t.mu.Unlock()
-				if s != nil {
-					// use error detail to provide better err message
-					t.closeStream(s, streamErrorf(http2ErrConvTab[se.Code], "%v", t.framer.fr.ErrorDetail()), true, http2.ErrCodeProtocol, nil, nil, false)
-				}
-				continue
-			} else {
-				// Transport error.
-				t.Close()
-				return
-			}
-		}
-		switch frame := frame.(type) {
-		case *http2.MetaHeadersFrame:
-			t.operateHeaders(frame)
-		case *http2.DataFrame:
-			t.handleData(frame)
-		case *http2.RSTStreamFrame:
-			t.handleRSTStream(frame)
-		case *http2.SettingsFrame:
-			t.handleSettings(frame, false)
-		case *http2.PingFrame:
-			t.handlePing(frame)
-		case *http2.GoAwayFrame:
-			t.handleGoAway(frame)
-		case *http2.WindowUpdateFrame:
-			t.handleWindowUpdate(frame)
-		default:
-			errorf("transport: http2Client.reader got unhandled frame type %v.", frame)
-		}
-	}
-}
-
-// keepalive running in a separate goroutune makes sure the connection is alive by sending pings.
-func (t *http2Client) keepalive() {
-	p := &ping{data: [8]byte{}}
-	timer := time.NewTimer(t.kp.Time)
-	for {
-		select {
-		case <-timer.C:
-			if atomic.CompareAndSwapUint32(&t.activity, 1, 0) {
-				timer.Reset(t.kp.Time)
-				continue
-			}
-			// Check if keepalive should go dormant.
-			t.mu.Lock()
-			if len(t.activeStreams) < 1 && !t.kp.PermitWithoutStream {
-				// Make awakenKeepalive writable.
-				<-t.awakenKeepalive
-				t.mu.Unlock()
-				select {
-				case <-t.awakenKeepalive:
-					// If the control gets here a ping has been sent
-					// need to reset the timer with keepalive.Timeout.
-				case <-t.ctx.Done():
-					return
-				}
-			} else {
-				t.mu.Unlock()
-				if channelz.IsOn() {
-					t.czmu.Lock()
-					t.kpCount++
-					t.czmu.Unlock()
-				}
-				// Send ping.
-				t.controlBuf.put(p)
-			}
-
-			// By the time control gets here a ping has been sent one way or the other.
-			timer.Reset(t.kp.Timeout)
-			select {
-			case <-timer.C:
-				if atomic.CompareAndSwapUint32(&t.activity, 1, 0) {
-					timer.Reset(t.kp.Time)
-					continue
-				}
-				t.Close()
-				return
-			case <-t.ctx.Done():
-				if !timer.Stop() {
-					<-timer.C
-				}
-				return
-			}
-		case <-t.ctx.Done():
-			if !timer.Stop() {
-				<-timer.C
-			}
-			return
-		}
-	}
-}
-
-func (t *http2Client) Error() <-chan struct{} {
-	return t.ctx.Done()
-}
-
-func (t *http2Client) GoAway() <-chan struct{} {
-	return t.goAway
-}
-
-func (t *http2Client) ChannelzMetric() *channelz.SocketInternalMetric {
-	t.czmu.RLock()
-	s := channelz.SocketInternalMetric{
-		StreamsStarted:                  t.streamsStarted,
-		StreamsSucceeded:                t.streamsSucceeded,
-		StreamsFailed:                   t.streamsFailed,
-		MessagesSent:                    t.msgSent,
-		MessagesReceived:                t.msgRecv,
-		KeepAlivesSent:                  t.kpCount,
-		LastLocalStreamCreatedTimestamp: t.lastStreamCreated,
-		LastMessageSentTimestamp:        t.lastMsgSent,
-		LastMessageReceivedTimestamp:    t.lastMsgRecv,
-		LocalFlowControlWindow:          int64(t.fc.getSize()),
-		//socket options
-		LocalAddr:  t.localAddr,
-		RemoteAddr: t.remoteAddr,
-		// Security
-		// RemoteName :
-	}
-	t.czmu.RUnlock()
-	s.RemoteFlowControlWindow = t.getOutFlowWindow()
-	return &s
-}
-
-func (t *http2Client) IncrMsgSent() {
-	t.czmu.Lock()
-	t.msgSent++
-	t.lastMsgSent = time.Now()
-	t.czmu.Unlock()
-}
-
-func (t *http2Client) IncrMsgRecv() {
-	t.czmu.Lock()
-	t.msgRecv++
-	t.lastMsgRecv = time.Now()
-	t.czmu.Unlock()
-}
-
-func (t *http2Client) getOutFlowWindow() int64 {
-	resp := make(chan uint32, 1)
-	timer := time.NewTimer(time.Second)
-	defer timer.Stop()
-	t.controlBuf.put(&outFlowControlSizeRequest{resp})
-	select {
-	case sz := <-resp:
-		return int64(sz)
-	case <-t.ctxDone:
-		return -1
-	case <-timer.C:
-		return -2
-	}
-}
diff --git a/vendor/google.golang.org/grpc/transport/http2_server.go b/vendor/google.golang.org/grpc/transport/http2_server.go
deleted file mode 100644
index 19acedb2b..000000000
--- a/vendor/google.golang.org/grpc/transport/http2_server.go
+++ /dev/null
@@ -1,1142 +0,0 @@
-/*
- *
- * Copyright 2014 gRPC authors.
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *     http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- *
- */
-
-package transport
-
-import (
-	"bytes"
-	"errors"
-	"fmt"
-	"io"
-	"math"
-	"net"
-	"strconv"
-	"sync"
-	"sync/atomic"
-	"time"
-
-	"github.com/golang/protobuf/proto"
-	"golang.org/x/net/context"
-	"golang.org/x/net/http2"
-	"golang.org/x/net/http2/hpack"
-
-	"google.golang.org/grpc/codes"
-	"google.golang.org/grpc/credentials"
-	"google.golang.org/grpc/grpclog"
-	"google.golang.org/grpc/internal/channelz"
-	"google.golang.org/grpc/internal/grpcrand"
-	"google.golang.org/grpc/keepalive"
-	"google.golang.org/grpc/metadata"
-	"google.golang.org/grpc/peer"
-	"google.golang.org/grpc/stats"
-	"google.golang.org/grpc/status"
-	"google.golang.org/grpc/tap"
-)
-
-// ErrIllegalHeaderWrite indicates that setting header is illegal because of
-// the stream's state.
-var ErrIllegalHeaderWrite = errors.New("transport: the stream is done or WriteHeader was already called")
-
-// http2Server implements the ServerTransport interface with HTTP2.
-type http2Server struct {
-	ctx         context.Context
-	ctxDone     <-chan struct{} // Cache the context.Done() chan
-	cancel      context.CancelFunc
-	conn        net.Conn
-	loopy       *loopyWriter
-	readerDone  chan struct{} // sync point to enable testing.
-	writerDone  chan struct{} // sync point to enable testing.
-	remoteAddr  net.Addr
-	localAddr   net.Addr
-	maxStreamID uint32               // max stream ID ever seen
-	authInfo    credentials.AuthInfo // auth info about the connection
-	inTapHandle tap.ServerInHandle
-	framer      *framer
-	// The max number of concurrent streams.
-	maxStreams uint32
-	// controlBuf delivers all the control related tasks (e.g., window
-	// updates, reset streams, and various settings) to the controller.
-	controlBuf *controlBuffer
-	fc         *trInFlow
-	stats      stats.Handler
-	// Flag to keep track of reading activity on transport.
-	// 1 is true and 0 is false.
-	activity uint32 // Accessed atomically.
-	// Keepalive and max-age parameters for the server.
-	kp keepalive.ServerParameters
-
-	// Keepalive enforcement policy.
-	kep keepalive.EnforcementPolicy
-	// The time instance last ping was received.
-	lastPingAt time.Time
-	// Number of times the client has violated keepalive ping policy so far.
-	pingStrikes uint8
-	// Flag to signify that number of ping strikes should be reset to 0.
-	// This is set whenever data or header frames are sent.
-	// 1 means yes.
-	resetPingStrikes  uint32 // Accessed atomically.
-	initialWindowSize int32
-	bdpEst            *bdpEstimator
-
-	mu sync.Mutex // guard the following
-
-	// drainChan is initialized when drain(...) is called the first time.
-	// After which the server writes out the first GoAway(with ID 2^31-1) frame.
-	// Then an independent goroutine will be launched to later send the second GoAway.
-	// During this time we don't want to write another first GoAway(with ID 2^31 -1) frame.
-	// Thus call to drain(...) will be a no-op if drainChan is already initialized since draining is
-	// already underway.
-	drainChan     chan struct{}
-	state         transportState
-	activeStreams map[uint32]*Stream
-	// idle is the time instant when the connection went idle.
-	// This is either the beginning of the connection or when the number of
-	// RPCs go down to 0.
-	// When the connection is busy, this value is set to 0.
-	idle time.Time
-
-	// Fields below are for channelz metric collection.
-	channelzID int64 // channelz unique identification number
-	czmu       sync.RWMutex
-	kpCount    int64
-	// The number of streams that have started, including already finished ones.
-	streamsStarted int64
-	// The number of streams that have ended successfully by sending frame with
-	// EoS bit set.
-	streamsSucceeded  int64
-	streamsFailed     int64
-	lastStreamCreated time.Time
-	msgSent           int64
-	msgRecv           int64
-	lastMsgSent       time.Time
-	lastMsgRecv       time.Time
-}
-
-// newHTTP2Server constructs a ServerTransport based on HTTP2. ConnectionError is
-// returned if something goes wrong.
-func newHTTP2Server(conn net.Conn, config *ServerConfig) (_ ServerTransport, err error) {
-	writeBufSize := defaultWriteBufSize
-	if config.WriteBufferSize > 0 {
-		writeBufSize = config.WriteBufferSize
-	}
-	readBufSize := defaultReadBufSize
-	if config.ReadBufferSize > 0 {
-		readBufSize = config.ReadBufferSize
-	}
-	framer := newFramer(conn, writeBufSize, readBufSize)
-	// Send initial settings as connection preface to client.
-	var isettings []http2.Setting
-	// TODO(zhaoq): Have a better way to signal "no limit" because 0 is
-	// permitted in the HTTP2 spec.
-	maxStreams := config.MaxStreams
-	if maxStreams == 0 {
-		maxStreams = math.MaxUint32
-	} else {
-		isettings = append(isettings, http2.Setting{
-			ID:  http2.SettingMaxConcurrentStreams,
-			Val: maxStreams,
-		})
-	}
-	dynamicWindow := true
-	iwz := int32(initialWindowSize)
-	if config.InitialWindowSize >= defaultWindowSize {
-		iwz = config.InitialWindowSize
-		dynamicWindow = false
-	}
-	icwz := int32(initialWindowSize)
-	if config.InitialConnWindowSize >= defaultWindowSize {
-		icwz = config.InitialConnWindowSize
-		dynamicWindow = false
-	}
-	if iwz != defaultWindowSize {
-		isettings = append(isettings, http2.Setting{
-			ID:  http2.SettingInitialWindowSize,
-			Val: uint32(iwz)})
-	}
-	if err := framer.fr.WriteSettings(isettings...); err != nil {
-		return nil, connectionErrorf(false, err, "transport: %v", err)
-	}
-	// Adjust the connection flow control window if needed.
-	if delta := uint32(icwz - defaultWindowSize); delta > 0 {
-		if err := framer.fr.WriteWindowUpdate(0, delta); err != nil {
-			return nil, connectionErrorf(false, err, "transport: %v", err)
-		}
-	}
-	kp := config.KeepaliveParams
-	if kp.MaxConnectionIdle == 0 {
-		kp.MaxConnectionIdle = defaultMaxConnectionIdle
-	}
-	if kp.MaxConnectionAge == 0 {
-		kp.MaxConnectionAge = defaultMaxConnectionAge
-	}
-	// Add a jitter to MaxConnectionAge.
-	kp.MaxConnectionAge += getJitter(kp.MaxConnectionAge)
-	if kp.MaxConnectionAgeGrace == 0 {
-		kp.MaxConnectionAgeGrace = defaultMaxConnectionAgeGrace
-	}
-	if kp.Time == 0 {
-		kp.Time = defaultServerKeepaliveTime
-	}
-	if kp.Timeout == 0 {
-		kp.Timeout = defaultServerKeepaliveTimeout
-	}
-	kep := config.KeepalivePolicy
-	if kep.MinTime == 0 {
-		kep.MinTime = defaultKeepalivePolicyMinTime
-	}
-	ctx, cancel := context.WithCancel(context.Background())
-	t := &http2Server{
-		ctx:               ctx,
-		cancel:            cancel,
-		ctxDone:           ctx.Done(),
-		conn:              conn,
-		remoteAddr:        conn.RemoteAddr(),
-		localAddr:         conn.LocalAddr(),
-		authInfo:          config.AuthInfo,
-		framer:            framer,
-		readerDone:        make(chan struct{}),
-		writerDone:        make(chan struct{}),
-		maxStreams:        maxStreams,
-		inTapHandle:       config.InTapHandle,
-		fc:                &trInFlow{limit: uint32(icwz)},
-		state:             reachable,
-		activeStreams:     make(map[uint32]*Stream),
-		stats:             config.StatsHandler,
-		kp:                kp,
-		idle:              time.Now(),
-		kep:               kep,
-		initialWindowSize: iwz,
-	}
-	t.controlBuf = newControlBuffer(t.ctxDone)
-	if dynamicWindow {
-		t.bdpEst = &bdpEstimator{
-			bdp:               initialWindowSize,
-			updateFlowControl: t.updateFlowControl,
-		}
-	}
-	if t.stats != nil {
-		t.ctx = t.stats.TagConn(t.ctx, &stats.ConnTagInfo{
-			RemoteAddr: t.remoteAddr,
-			LocalAddr:  t.localAddr,
-		})
-		connBegin := &stats.ConnBegin{}
-		t.stats.HandleConn(t.ctx, connBegin)
-	}
-	if channelz.IsOn() {
-		t.channelzID = channelz.RegisterNormalSocket(t, config.ChannelzParentID, "")
-	}
-	t.framer.writer.Flush()
-
-	defer func() {
-		if err != nil {
-			t.Close()
-		}
-	}()
-
-	// Check the validity of client preface.
-	preface := make([]byte, len(clientPreface))
-	if _, err := io.ReadFull(t.conn, preface); err != nil {
-		return nil, connectionErrorf(false, err, "transport: http2Server.HandleStreams failed to receive the preface from client: %v", err)
-	}
-	if !bytes.Equal(preface, clientPreface) {
-		return nil, connectionErrorf(false, nil, "transport: http2Server.HandleStreams received bogus greeting from client: %q", preface)
-	}
-
-	frame, err := t.framer.fr.ReadFrame()
-	if err == io.EOF || err == io.ErrUnexpectedEOF {
-		return nil, err
-	}
-	if err != nil {
-		return nil, connectionErrorf(false, err, "transport: http2Server.HandleStreams failed to read initial settings frame: %v", err)
-	}
-	atomic.StoreUint32(&t.activity, 1)
-	sf, ok := frame.(*http2.SettingsFrame)
-	if !ok {
-		return nil, connectionErrorf(false, nil, "transport: http2Server.HandleStreams saw invalid preface type %T from client", frame)
-	}
-	t.handleSettings(sf)
-
-	go func() {
-		t.loopy = newLoopyWriter(serverSide, t.framer, t.controlBuf, t.bdpEst)
-		t.loopy.ssGoAwayHandler = t.outgoingGoAwayHandler
-		if err := t.loopy.run(); err != nil {
-			errorf("transport: loopyWriter.run returning. Err: %v", err)
-		}
-		t.conn.Close()
-		close(t.writerDone)
-	}()
-	go t.keepalive()
-	return t, nil
-}
-
-// operateHeader takes action on the decoded headers.
-func (t *http2Server) operateHeaders(frame *http2.MetaHeadersFrame, handle func(*Stream), traceCtx func(context.Context, string) context.Context) (close bool) {
-	streamID := frame.Header().StreamID
-	var state decodeState
-	for _, hf := range frame.Fields {
-		if err := state.processHeaderField(hf); err != nil {
-			if se, ok := err.(StreamError); ok {
-				t.controlBuf.put(&cleanupStream{
-					streamID: streamID,
-					rst:      true,
-					rstCode:  statusCodeConvTab[se.Code],
-					onWrite:  func() {},
-				})
-			}
-			return
-		}
-	}
-
-	buf := newRecvBuffer()
-	s := &Stream{
-		id:             streamID,
-		st:             t,
-		buf:            buf,
-		fc:             &inFlow{limit: uint32(t.initialWindowSize)},
-		recvCompress:   state.encoding,
-		method:         state.method,
-		contentSubtype: state.contentSubtype,
-	}
-	if frame.StreamEnded() {
-		// s is just created by the caller. No lock needed.
-		s.state = streamReadDone
-	}
-	if state.timeoutSet {
-		s.ctx, s.cancel = context.WithTimeout(t.ctx, state.timeout)
-	} else {
-		s.ctx, s.cancel = context.WithCancel(t.ctx)
-	}
-	pr := &peer.Peer{
-		Addr: t.remoteAddr,
-	}
-	// Attach Auth info if there is any.
-	if t.authInfo != nil {
-		pr.AuthInfo = t.authInfo
-	}
-	s.ctx = peer.NewContext(s.ctx, pr)
-	// Attach the received metadata to the context.
-	if len(state.mdata) > 0 {
-		s.ctx = metadata.NewIncomingContext(s.ctx, state.mdata)
-	}
-	if state.statsTags != nil {
-		s.ctx = stats.SetIncomingTags(s.ctx, state.statsTags)
-	}
-	if state.statsTrace != nil {
-		s.ctx = stats.SetIncomingTrace(s.ctx, state.statsTrace)
-	}
-	if t.inTapHandle != nil {
-		var err error
-		info := &tap.Info{
-			FullMethodName: state.method,
-		}
-		s.ctx, err = t.inTapHandle(s.ctx, info)
-		if err != nil {
-			warningf("transport: http2Server.operateHeaders got an error from InTapHandle: %v", err)
-			t.controlBuf.put(&cleanupStream{
-				streamID: s.id,
-				rst:      true,
-				rstCode:  http2.ErrCodeRefusedStream,
-				onWrite:  func() {},
-			})
-			return
-		}
-	}
-	t.mu.Lock()
-	if t.state != reachable {
-		t.mu.Unlock()
-		return
-	}
-	if uint32(len(t.activeStreams)) >= t.maxStreams {
-		t.mu.Unlock()
-		t.controlBuf.put(&cleanupStream{
-			streamID: streamID,
-			rst:      true,
-			rstCode:  http2.ErrCodeRefusedStream,
-			onWrite:  func() {},
-		})
-		return
-	}
-	if streamID%2 != 1 || streamID <= t.maxStreamID {
-		t.mu.Unlock()
-		// illegal gRPC stream id.
-		errorf("transport: http2Server.HandleStreams received an illegal stream id: %v", streamID)
-		return true
-	}
-	t.maxStreamID = streamID
-	t.activeStreams[streamID] = s
-	if len(t.activeStreams) == 1 {
-		t.idle = time.Time{}
-	}
-	t.mu.Unlock()
-	if channelz.IsOn() {
-		t.czmu.Lock()
-		t.streamsStarted++
-		t.lastStreamCreated = time.Now()
-		t.czmu.Unlock()
-	}
-	s.requestRead = func(n int) {
-		t.adjustWindow(s, uint32(n))
-	}
-	s.ctx = traceCtx(s.ctx, s.method)
-	if t.stats != nil {
-		s.ctx = t.stats.TagRPC(s.ctx, &stats.RPCTagInfo{FullMethodName: s.method})
-		inHeader := &stats.InHeader{
-			FullMethod:  s.method,
-			RemoteAddr:  t.remoteAddr,
-			LocalAddr:   t.localAddr,
-			Compression: s.recvCompress,
-			WireLength:  int(frame.Header().Length),
-		}
-		t.stats.HandleRPC(s.ctx, inHeader)
-	}
-	s.ctxDone = s.ctx.Done()
-	s.wq = newWriteQuota(defaultWriteQuota, s.ctxDone)
-	s.trReader = &transportReader{
-		reader: &recvBufferReader{
-			ctx:     s.ctx,
-			ctxDone: s.ctxDone,
-			recv:    s.buf,
-		},
-		windowHandler: func(n int) {
-			t.updateWindow(s, uint32(n))
-		},
-	}
-	// Register the stream with loopy.
-	t.controlBuf.put(&registerStream{
-		streamID: s.id,
-		wq:       s.wq,
-	})
-	handle(s)
-	return
-}
-
-// HandleStreams receives incoming streams using the given handler. This is
-// typically run in a separate goroutine.
-// traceCtx attaches trace to ctx and returns the new context.
-func (t *http2Server) HandleStreams(handle func(*Stream), traceCtx func(context.Context, string) context.Context) {
-	defer close(t.readerDone)
-	for {
-		frame, err := t.framer.fr.ReadFrame()
-		atomic.StoreUint32(&t.activity, 1)
-		if err != nil {
-			if se, ok := err.(http2.StreamError); ok {
-				warningf("transport: http2Server.HandleStreams encountered http2.StreamError: %v", se)
-				t.mu.Lock()
-				s := t.activeStreams[se.StreamID]
-				t.mu.Unlock()
-				if s != nil {
-					t.closeStream(s, true, se.Code, nil, false)
-				} else {
-					t.controlBuf.put(&cleanupStream{
-						streamID: se.StreamID,
-						rst:      true,
-						rstCode:  se.Code,
-						onWrite:  func() {},
-					})
-				}
-				continue
-			}
-			if err == io.EOF || err == io.ErrUnexpectedEOF {
-				t.Close()
-				return
-			}
-			warningf("transport: http2Server.HandleStreams failed to read frame: %v", err)
-			t.Close()
-			return
-		}
-		switch frame := frame.(type) {
-		case *http2.MetaHeadersFrame:
-			if t.operateHeaders(frame, handle, traceCtx) {
-				t.Close()
-				break
-			}
-		case *http2.DataFrame:
-			t.handleData(frame)
-		case *http2.RSTStreamFrame:
-			t.handleRSTStream(frame)
-		case *http2.SettingsFrame:
-			t.handleSettings(frame)
-		case *http2.PingFrame:
-			t.handlePing(frame)
-		case *http2.WindowUpdateFrame:
-			t.handleWindowUpdate(frame)
-		case *http2.GoAwayFrame:
-			// TODO: Handle GoAway from the client appropriately.
-		default:
-			errorf("transport: http2Server.HandleStreams found unhandled frame type %v.", frame)
-		}
-	}
-}
-
-func (t *http2Server) getStream(f http2.Frame) (*Stream, bool) {
-	t.mu.Lock()
-	defer t.mu.Unlock()
-	if t.activeStreams == nil {
-		// The transport is closing.
-		return nil, false
-	}
-	s, ok := t.activeStreams[f.Header().StreamID]
-	if !ok {
-		// The stream is already done.
-		return nil, false
-	}
-	return s, true
-}
-
-// adjustWindow sends out extra window update over the initial window size
-// of stream if the application is requesting data larger in size than
-// the window.
-func (t *http2Server) adjustWindow(s *Stream, n uint32) {
-	if w := s.fc.maybeAdjust(n); w > 0 {
-		t.controlBuf.put(&outgoingWindowUpdate{streamID: s.id, increment: w})
-	}
-
-}
-
-// updateWindow adjusts the inbound quota for the stream and the transport.
-// Window updates will deliver to the controller for sending when
-// the cumulative quota exceeds the corresponding threshold.
-func (t *http2Server) updateWindow(s *Stream, n uint32) {
-	if w := s.fc.onRead(n); w > 0 {
-		t.controlBuf.put(&outgoingWindowUpdate{streamID: s.id,
-			increment: w,
-		})
-	}
-}
-
-// updateFlowControl updates the incoming flow control windows
-// for the transport and the stream based on the current bdp
-// estimation.
-func (t *http2Server) updateFlowControl(n uint32) {
-	t.mu.Lock()
-	for _, s := range t.activeStreams {
-		s.fc.newLimit(n)
-	}
-	t.initialWindowSize = int32(n)
-	t.mu.Unlock()
-	t.controlBuf.put(&outgoingWindowUpdate{
-		streamID:  0,
-		increment: t.fc.newLimit(n),
-	})
-	t.controlBuf.put(&outgoingSettings{
-		ss: []http2.Setting{
-			{
-				ID:  http2.SettingInitialWindowSize,
-				Val: n,
-			},
-		},
-	})
-
-}
-
-func (t *http2Server) handleData(f *http2.DataFrame) {
-	size := f.Header().Length
-	var sendBDPPing bool
-	if t.bdpEst != nil {
-		sendBDPPing = t.bdpEst.add(size)
-	}
-	// Decouple connection's flow control from application's read.
-	// An update on connection's flow control should not depend on
-	// whether user application has read the data or not. Such a
-	// restriction is already imposed on the stream's flow control,
-	// and therefore the sender will be blocked anyways.
-	// Decoupling the connection flow control will prevent other
-	// active(fast) streams from starving in presence of slow or
-	// inactive streams.
-	if w := t.fc.onData(size); w > 0 {
-		t.controlBuf.put(&outgoingWindowUpdate{
-			streamID:  0,
-			increment: w,
-		})
-	}
-	if sendBDPPing {
-		// Avoid excessive ping detection (e.g. in an L7 proxy)
-		// by sending a window update prior to the BDP ping.
-		if w := t.fc.reset(); w > 0 {
-			t.controlBuf.put(&outgoingWindowUpdate{
-				streamID:  0,
-				increment: w,
-			})
-		}
-		t.controlBuf.put(bdpPing)
-	}
-	// Select the right stream to dispatch.
-	s, ok := t.getStream(f)
-	if !ok {
-		return
-	}
-	if size > 0 {
-		if err := s.fc.onData(size); err != nil {
-			t.closeStream(s, true, http2.ErrCodeFlowControl, nil, false)
-			return
-		}
-		if f.Header().Flags.Has(http2.FlagDataPadded) {
-			if w := s.fc.onRead(size - uint32(len(f.Data()))); w > 0 {
-				t.controlBuf.put(&outgoingWindowUpdate{s.id, w})
-			}
-		}
-		// TODO(bradfitz, zhaoq): A copy is required here because there is no
-		// guarantee f.Data() is consumed before the arrival of next frame.
-		// Can this copy be eliminated?
-		if len(f.Data()) > 0 {
-			data := make([]byte, len(f.Data()))
-			copy(data, f.Data())
-			s.write(recvMsg{data: data})
-		}
-	}
-	if f.Header().Flags.Has(http2.FlagDataEndStream) {
-		// Received the end of stream from the client.
-		s.compareAndSwapState(streamActive, streamReadDone)
-		s.write(recvMsg{err: io.EOF})
-	}
-}
-
-func (t *http2Server) handleRSTStream(f *http2.RSTStreamFrame) {
-	s, ok := t.getStream(f)
-	if !ok {
-		return
-	}
-	t.closeStream(s, false, 0, nil, false)
-}
-
-func (t *http2Server) handleSettings(f *http2.SettingsFrame) {
-	if f.IsAck() {
-		return
-	}
-	var ss []http2.Setting
-	f.ForeachSetting(func(s http2.Setting) error {
-		ss = append(ss, s)
-		return nil
-	})
-	t.controlBuf.put(&incomingSettings{
-		ss: ss,
-	})
-}
-
-const (
-	maxPingStrikes     = 2
-	defaultPingTimeout = 2 * time.Hour
-)
-
-func (t *http2Server) handlePing(f *http2.PingFrame) {
-	if f.IsAck() {
-		if f.Data == goAwayPing.data && t.drainChan != nil {
-			close(t.drainChan)
-			return
-		}
-		// Maybe it's a BDP ping.
-		if t.bdpEst != nil {
-			t.bdpEst.calculate(f.Data)
-		}
-		return
-	}
-	pingAck := &ping{ack: true}
-	copy(pingAck.data[:], f.Data[:])
-	t.controlBuf.put(pingAck)
-
-	now := time.Now()
-	defer func() {
-		t.lastPingAt = now
-	}()
-	// A reset ping strikes means that we don't need to check for policy
-	// violation for this ping and the pingStrikes counter should be set
-	// to 0.
-	if atomic.CompareAndSwapUint32(&t.resetPingStrikes, 1, 0) {
-		t.pingStrikes = 0
-		return
-	}
-	t.mu.Lock()
-	ns := len(t.activeStreams)
-	t.mu.Unlock()
-	if ns < 1 && !t.kep.PermitWithoutStream {
-		// Keepalive shouldn't be active thus, this new ping should
-		// have come after at least defaultPingTimeout.
-		if t.lastPingAt.Add(defaultPingTimeout).After(now) {
-			t.pingStrikes++
-		}
-	} else {
-		// Check if keepalive policy is respected.
-		if t.lastPingAt.Add(t.kep.MinTime).After(now) {
-			t.pingStrikes++
-		}
-	}
-
-	if t.pingStrikes > maxPingStrikes {
-		// Send goaway and close the connection.
-		errorf("transport: Got too many pings from the client, closing the connection.")
-		t.controlBuf.put(&goAway{code: http2.ErrCodeEnhanceYourCalm, debugData: []byte("too_many_pings"), closeConn: true})
-	}
-}
-
-func (t *http2Server) handleWindowUpdate(f *http2.WindowUpdateFrame) {
-	t.controlBuf.put(&incomingWindowUpdate{
-		streamID:  f.Header().StreamID,
-		increment: f.Increment,
-	})
-}
-
-func appendHeaderFieldsFromMD(headerFields []hpack.HeaderField, md metadata.MD) []hpack.HeaderField {
-	for k, vv := range md {
-		if isReservedHeader(k) {
-			// Clients don't tolerate reading restricted headers after some non restricted ones were sent.
-			continue
-		}
-		for _, v := range vv {
-			headerFields = append(headerFields, hpack.HeaderField{Name: k, Value: encodeMetadataHeader(k, v)})
-		}
-	}
-	return headerFields
-}
-
-// WriteHeader sends the header metedata md back to the client.
-func (t *http2Server) WriteHeader(s *Stream, md metadata.MD) error {
-	if s.updateHeaderSent() || s.getState() == streamDone {
-		return ErrIllegalHeaderWrite
-	}
-	s.hdrMu.Lock()
-	if md.Len() > 0 {
-		if s.header.Len() > 0 {
-			s.header = metadata.Join(s.header, md)
-		} else {
-			s.header = md
-		}
-	}
-	t.writeHeaderLocked(s)
-	s.hdrMu.Unlock()
-	return nil
-}
-
-func (t *http2Server) writeHeaderLocked(s *Stream) {
-	// TODO(mmukhi): Benchmark if the performance gets better if count the metadata and other header fields
-	// first and create a slice of that exact size.
-	headerFields := make([]hpack.HeaderField, 0, 2) // at least :status, content-type will be there if none else.
-	headerFields = append(headerFields, hpack.HeaderField{Name: ":status", Value: "200"})
-	headerFields = append(headerFields, hpack.HeaderField{Name: "content-type", Value: contentType(s.contentSubtype)})
-	if s.sendCompress != "" {
-		headerFields = append(headerFields, hpack.HeaderField{Name: "grpc-encoding", Value: s.sendCompress})
-	}
-	headerFields = appendHeaderFieldsFromMD(headerFields, s.header)
-	t.controlBuf.put(&headerFrame{
-		streamID:  s.id,
-		hf:        headerFields,
-		endStream: false,
-		onWrite: func() {
-			atomic.StoreUint32(&t.resetPingStrikes, 1)
-		},
-	})
-	if t.stats != nil {
-		// Note: WireLength is not set in outHeader.
-		// TODO(mmukhi): Revisit this later, if needed.
-		outHeader := &stats.OutHeader{}
-		t.stats.HandleRPC(s.Context(), outHeader)
-	}
-}
-
-// WriteStatus sends stream status to the client and terminates the stream.
-// There is no further I/O operations being able to perform on this stream.
-// TODO(zhaoq): Now it indicates the end of entire stream. Revisit if early
-// OK is adopted.
-func (t *http2Server) WriteStatus(s *Stream, st *status.Status) error {
-	if s.getState() == streamDone {
-		return nil
-	}
-	s.hdrMu.Lock()
-	// TODO(mmukhi): Benchmark if the performance gets better if count the metadata and other header fields
-	// first and create a slice of that exact size.
-	headerFields := make([]hpack.HeaderField, 0, 2) // grpc-status and grpc-message will be there if none else.
-	if !s.updateHeaderSent() {                      // No headers have been sent.
-		if len(s.header) > 0 { // Send a separate header frame.
-			t.writeHeaderLocked(s)
-		} else { // Send a trailer only response.
-			headerFields = append(headerFields, hpack.HeaderField{Name: ":status", Value: "200"})
-			headerFields = append(headerFields, hpack.HeaderField{Name: "content-type", Value: contentType(s.contentSubtype)})
-		}
-	}
-	headerFields = append(headerFields, hpack.HeaderField{Name: "grpc-status", Value: strconv.Itoa(int(st.Code()))})
-	headerFields = append(headerFields, hpack.HeaderField{Name: "grpc-message", Value: encodeGrpcMessage(st.Message())})
-
-	if p := st.Proto(); p != nil && len(p.Details) > 0 {
-		stBytes, err := proto.Marshal(p)
-		if err != nil {
-			// TODO: return error instead, when callers are able to handle it.
-			grpclog.Errorf("transport: failed to marshal rpc status: %v, error: %v", p, err)
-		} else {
-			headerFields = append(headerFields, hpack.HeaderField{Name: "grpc-status-details-bin", Value: encodeBinHeader(stBytes)})
-		}
-	}
-
-	// Attach the trailer metadata.
-	headerFields = appendHeaderFieldsFromMD(headerFields, s.trailer)
-	trailingHeader := &headerFrame{
-		streamID:  s.id,
-		hf:        headerFields,
-		endStream: true,
-		onWrite: func() {
-			atomic.StoreUint32(&t.resetPingStrikes, 1)
-		},
-	}
-	s.hdrMu.Unlock()
-	t.closeStream(s, false, 0, trailingHeader, true)
-	if t.stats != nil {
-		t.stats.HandleRPC(s.Context(), &stats.OutTrailer{})
-	}
-	return nil
-}
-
-// Write converts the data into HTTP2 data frame and sends it out. Non-nil error
-// is returns if it fails (e.g., framing error, transport error).
-func (t *http2Server) Write(s *Stream, hdr []byte, data []byte, opts *Options) error {
-	if !s.isHeaderSent() { // Headers haven't been written yet.
-		if err := t.WriteHeader(s, nil); err != nil {
-			// TODO(mmukhi, dfawley): Make sure this is the right code to return.
-			return streamErrorf(codes.Internal, "transport: %v", err)
-		}
-	} else {
-		// Writing headers checks for this condition.
-		if s.getState() == streamDone {
-			// TODO(mmukhi, dfawley): Should the server write also return io.EOF?
-			s.cancel()
-			select {
-			case <-t.ctx.Done():
-				return ErrConnClosing
-			default:
-			}
-			return ContextErr(s.ctx.Err())
-		}
-	}
-	// Add some data to header frame so that we can equally distribute bytes across frames.
-	emptyLen := http2MaxFrameLen - len(hdr)
-	if emptyLen > len(data) {
-		emptyLen = len(data)
-	}
-	hdr = append(hdr, data[:emptyLen]...)
-	data = data[emptyLen:]
-	df := &dataFrame{
-		streamID: s.id,
-		h:        hdr,
-		d:        data,
-		onEachWrite: func() {
-			atomic.StoreUint32(&t.resetPingStrikes, 1)
-		},
-	}
-	if err := s.wq.get(int32(len(hdr) + len(data))); err != nil {
-		select {
-		case <-t.ctx.Done():
-			return ErrConnClosing
-		default:
-		}
-		return ContextErr(s.ctx.Err())
-	}
-	return t.controlBuf.put(df)
-}
-
-// keepalive running in a separate goroutine does the following:
-// 1. Gracefully closes an idle connection after a duration of keepalive.MaxConnectionIdle.
-// 2. Gracefully closes any connection after a duration of keepalive.MaxConnectionAge.
-// 3. Forcibly closes a connection after an additive period of keepalive.MaxConnectionAgeGrace over keepalive.MaxConnectionAge.
-// 4. Makes sure a connection is alive by sending pings with a frequency of keepalive.Time and closes a non-responsive connection
-// after an additional duration of keepalive.Timeout.
-func (t *http2Server) keepalive() {
-	p := &ping{}
-	var pingSent bool
-	maxIdle := time.NewTimer(t.kp.MaxConnectionIdle)
-	maxAge := time.NewTimer(t.kp.MaxConnectionAge)
-	keepalive := time.NewTimer(t.kp.Time)
-	// NOTE: All exit paths of this function should reset their
-	// respective timers. A failure to do so will cause the
-	// following clean-up to deadlock and eventually leak.
-	defer func() {
-		if !maxIdle.Stop() {
-			<-maxIdle.C
-		}
-		if !maxAge.Stop() {
-			<-maxAge.C
-		}
-		if !keepalive.Stop() {
-			<-keepalive.C
-		}
-	}()
-	for {
-		select {
-		case <-maxIdle.C:
-			t.mu.Lock()
-			idle := t.idle
-			if idle.IsZero() { // The connection is non-idle.
-				t.mu.Unlock()
-				maxIdle.Reset(t.kp.MaxConnectionIdle)
-				continue
-			}
-			val := t.kp.MaxConnectionIdle - time.Since(idle)
-			t.mu.Unlock()
-			if val <= 0 {
-				// The connection has been idle for a duration of keepalive.MaxConnectionIdle or more.
-				// Gracefully close the connection.
-				t.drain(http2.ErrCodeNo, []byte{})
-				// Resetting the timer so that the clean-up doesn't deadlock.
-				maxIdle.Reset(infinity)
-				return
-			}
-			maxIdle.Reset(val)
-		case <-maxAge.C:
-			t.drain(http2.ErrCodeNo, []byte{})
-			maxAge.Reset(t.kp.MaxConnectionAgeGrace)
-			select {
-			case <-maxAge.C:
-				// Close the connection after grace period.
-				t.Close()
-				// Resetting the timer so that the clean-up doesn't deadlock.
-				maxAge.Reset(infinity)
-			case <-t.ctx.Done():
-			}
-			return
-		case <-keepalive.C:
-			if atomic.CompareAndSwapUint32(&t.activity, 1, 0) {
-				pingSent = false
-				keepalive.Reset(t.kp.Time)
-				continue
-			}
-			if pingSent {
-				t.Close()
-				// Resetting the timer so that the clean-up doesn't deadlock.
-				keepalive.Reset(infinity)
-				return
-			}
-			pingSent = true
-			if channelz.IsOn() {
-				t.czmu.Lock()
-				t.kpCount++
-				t.czmu.Unlock()
-			}
-			t.controlBuf.put(p)
-			keepalive.Reset(t.kp.Timeout)
-		case <-t.ctx.Done():
-			return
-		}
-	}
-}
-
-// Close starts shutting down the http2Server transport.
-// TODO(zhaoq): Now the destruction is not blocked on any pending streams. This
-// could cause some resource issue. Revisit this later.
-func (t *http2Server) Close() error {
-	t.mu.Lock()
-	if t.state == closing {
-		t.mu.Unlock()
-		return errors.New("transport: Close() was already called")
-	}
-	t.state = closing
-	streams := t.activeStreams
-	t.activeStreams = nil
-	t.mu.Unlock()
-	t.controlBuf.finish()
-	t.cancel()
-	err := t.conn.Close()
-	if channelz.IsOn() {
-		channelz.RemoveEntry(t.channelzID)
-	}
-	// Cancel all active streams.
-	for _, s := range streams {
-		s.cancel()
-	}
-	if t.stats != nil {
-		connEnd := &stats.ConnEnd{}
-		t.stats.HandleConn(t.ctx, connEnd)
-	}
-	return err
-}
-
-// closeStream clears the footprint of a stream when the stream is not needed
-// any more.
-func (t *http2Server) closeStream(s *Stream, rst bool, rstCode http2.ErrCode, hdr *headerFrame, eosReceived bool) {
-	if s.swapState(streamDone) == streamDone {
-		// If the stream was already done, return.
-		return
-	}
-	// In case stream sending and receiving are invoked in separate
-	// goroutines (e.g., bi-directional streaming), cancel needs to be
-	// called to interrupt the potential blocking on other goroutines.
-	s.cancel()
-	cleanup := &cleanupStream{
-		streamID: s.id,
-		rst:      rst,
-		rstCode:  rstCode,
-		onWrite: func() {
-			t.mu.Lock()
-			if t.activeStreams != nil {
-				delete(t.activeStreams, s.id)
-				if len(t.activeStreams) == 0 {
-					t.idle = time.Now()
-				}
-			}
-			t.mu.Unlock()
-			if channelz.IsOn() {
-				t.czmu.Lock()
-				if eosReceived {
-					t.streamsSucceeded++
-				} else {
-					t.streamsFailed++
-				}
-				t.czmu.Unlock()
-			}
-		},
-	}
-	if hdr != nil {
-		hdr.cleanup = cleanup
-		t.controlBuf.put(hdr)
-	} else {
-		t.controlBuf.put(cleanup)
-	}
-}
-
-func (t *http2Server) RemoteAddr() net.Addr {
-	return t.remoteAddr
-}
-
-func (t *http2Server) Drain() {
-	t.drain(http2.ErrCodeNo, []byte{})
-}
-
-func (t *http2Server) drain(code http2.ErrCode, debugData []byte) {
-	t.mu.Lock()
-	defer t.mu.Unlock()
-	if t.drainChan != nil {
-		return
-	}
-	t.drainChan = make(chan struct{})
-	t.controlBuf.put(&goAway{code: code, debugData: debugData, headsUp: true})
-}
-
-var goAwayPing = &ping{data: [8]byte{1, 6, 1, 8, 0, 3, 3, 9}}
-
-// Handles outgoing GoAway and returns true if loopy needs to put itself
-// in draining mode.
-func (t *http2Server) outgoingGoAwayHandler(g *goAway) (bool, error) {
-	t.mu.Lock()
-	if t.state == closing { // TODO(mmukhi): This seems unnecessary.
-		t.mu.Unlock()
-		// The transport is closing.
-		return false, ErrConnClosing
-	}
-	sid := t.maxStreamID
-	if !g.headsUp {
-		// Stop accepting more streams now.
-		t.state = draining
-		if len(t.activeStreams) == 0 {
-			g.closeConn = true
-		}
-		t.mu.Unlock()
-		if err := t.framer.fr.WriteGoAway(sid, g.code, g.debugData); err != nil {
-			return false, err
-		}
-		if g.closeConn {
-			// Abruptly close the connection following the GoAway (via
-			// loopywriter).  But flush out what's inside the buffer first.
-			t.framer.writer.Flush()
-			return false, fmt.Errorf("transport: Connection closing")
-		}
-		return true, nil
-	}
-	t.mu.Unlock()
-	// For a graceful close, send out a GoAway with stream ID of MaxUInt32,
-	// Follow that with a ping and wait for the ack to come back or a timer
-	// to expire. During this time accept new streams since they might have
-	// originated before the GoAway reaches the client.
-	// After getting the ack or timer expiration send out another GoAway this
-	// time with an ID of the max stream server intends to process.
-	if err := t.framer.fr.WriteGoAway(math.MaxUint32, http2.ErrCodeNo, []byte{}); err != nil {
-		return false, err
-	}
-	if err := t.framer.fr.WritePing(false, goAwayPing.data); err != nil {
-		return false, err
-	}
-	go func() {
-		timer := time.NewTimer(time.Minute)
-		defer timer.Stop()
-		select {
-		case <-t.drainChan:
-		case <-timer.C:
-		case <-t.ctx.Done():
-			return
-		}
-		t.controlBuf.put(&goAway{code: g.code, debugData: g.debugData})
-	}()
-	return false, nil
-}
-
-func (t *http2Server) ChannelzMetric() *channelz.SocketInternalMetric {
-	t.czmu.RLock()
-	s := channelz.SocketInternalMetric{
-		StreamsStarted:                   t.streamsStarted,
-		StreamsSucceeded:                 t.streamsSucceeded,
-		StreamsFailed:                    t.streamsFailed,
-		MessagesSent:                     t.msgSent,
-		MessagesReceived:                 t.msgRecv,
-		KeepAlivesSent:                   t.kpCount,
-		LastRemoteStreamCreatedTimestamp: t.lastStreamCreated,
-		LastMessageSentTimestamp:         t.lastMsgSent,
-		LastMessageReceivedTimestamp:     t.lastMsgRecv,
-		LocalFlowControlWindow:           int64(t.fc.getSize()),
-		//socket options
-		LocalAddr:  t.localAddr,
-		RemoteAddr: t.remoteAddr,
-		// Security
-		// RemoteName :
-	}
-	t.czmu.RUnlock()
-	s.RemoteFlowControlWindow = t.getOutFlowWindow()
-	return &s
-}
-
-func (t *http2Server) IncrMsgSent() {
-	t.czmu.Lock()
-	t.msgSent++
-	t.lastMsgSent = time.Now()
-	t.czmu.Unlock()
-}
-
-func (t *http2Server) IncrMsgRecv() {
-	t.czmu.Lock()
-	t.msgRecv++
-	t.lastMsgRecv = time.Now()
-	t.czmu.Unlock()
-}
-
-func (t *http2Server) getOutFlowWindow() int64 {
-	resp := make(chan uint32)
-	timer := time.NewTimer(time.Second)
-	defer timer.Stop()
-	t.controlBuf.put(&outFlowControlSizeRequest{resp})
-	select {
-	case sz := <-resp:
-		return int64(sz)
-	case <-t.ctxDone:
-		return -1
-	case <-timer.C:
-		return -2
-	}
-}
-
-func getJitter(v time.Duration) time.Duration {
-	if v == infinity {
-		return 0
-	}
-	// Generate a jitter between +/- 10% of the value.
-	r := int64(v / 10)
-	j := grpcrand.Int63n(2*r) - r
-	return time.Duration(j)
-}
diff --git a/vendor/google.golang.org/grpc/transport/http_util.go b/vendor/google.golang.org/grpc/transport/http_util.go
deleted file mode 100644
index 7d15c7d74..000000000
--- a/vendor/google.golang.org/grpc/transport/http_util.go
+++ /dev/null
@@ -1,592 +0,0 @@
-/*
- *
- * Copyright 2014 gRPC authors.
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *     http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- *
- */
-
-package transport
-
-import (
-	"bufio"
-	"bytes"
-	"encoding/base64"
-	"fmt"
-	"net"
-	"net/http"
-	"strconv"
-	"strings"
-	"time"
-	"unicode/utf8"
-
-	"github.com/golang/protobuf/proto"
-	"golang.org/x/net/http2"
-	"golang.org/x/net/http2/hpack"
-	spb "google.golang.org/genproto/googleapis/rpc/status"
-	"google.golang.org/grpc/codes"
-	"google.golang.org/grpc/status"
-)
-
-const (
-	// http2MaxFrameLen specifies the max length of a HTTP2 frame.
-	http2MaxFrameLen = 16384 // 16KB frame
-	// http://http2.github.io/http2-spec/#SettingValues
-	http2InitHeaderTableSize = 4096
-	// http2IOBufSize specifies the buffer size for sending frames.
-	defaultWriteBufSize = 32 * 1024
-	defaultReadBufSize  = 32 * 1024
-	// baseContentType is the base content-type for gRPC.  This is a valid
-	// content-type on it's own, but can also include a content-subtype such as
-	// "proto" as a suffix after "+" or ";".  See
-	// https://github.com/grpc/grpc/blob/master/doc/PROTOCOL-HTTP2.md#requests
-	// for more details.
-	baseContentType = "application/grpc"
-)
-
-var (
-	clientPreface   = []byte(http2.ClientPreface)
-	http2ErrConvTab = map[http2.ErrCode]codes.Code{
-		http2.ErrCodeNo:                 codes.Internal,
-		http2.ErrCodeProtocol:           codes.Internal,
-		http2.ErrCodeInternal:           codes.Internal,
-		http2.ErrCodeFlowControl:        codes.ResourceExhausted,
-		http2.ErrCodeSettingsTimeout:    codes.Internal,
-		http2.ErrCodeStreamClosed:       codes.Internal,
-		http2.ErrCodeFrameSize:          codes.Internal,
-		http2.ErrCodeRefusedStream:      codes.Unavailable,
-		http2.ErrCodeCancel:             codes.Canceled,
-		http2.ErrCodeCompression:        codes.Internal,
-		http2.ErrCodeConnect:            codes.Internal,
-		http2.ErrCodeEnhanceYourCalm:    codes.ResourceExhausted,
-		http2.ErrCodeInadequateSecurity: codes.PermissionDenied,
-		http2.ErrCodeHTTP11Required:     codes.Internal,
-	}
-	statusCodeConvTab = map[codes.Code]http2.ErrCode{
-		codes.Internal:          http2.ErrCodeInternal,
-		codes.Canceled:          http2.ErrCodeCancel,
-		codes.Unavailable:       http2.ErrCodeRefusedStream,
-		codes.ResourceExhausted: http2.ErrCodeEnhanceYourCalm,
-		codes.PermissionDenied:  http2.ErrCodeInadequateSecurity,
-	}
-	httpStatusConvTab = map[int]codes.Code{
-		// 400 Bad Request - INTERNAL.
-		http.StatusBadRequest: codes.Internal,
-		// 401 Unauthorized  - UNAUTHENTICATED.
-		http.StatusUnauthorized: codes.Unauthenticated,
-		// 403 Forbidden - PERMISSION_DENIED.
-		http.StatusForbidden: codes.PermissionDenied,
-		// 404 Not Found - UNIMPLEMENTED.
-		http.StatusNotFound: codes.Unimplemented,
-		// 429 Too Many Requests - UNAVAILABLE.
-		http.StatusTooManyRequests: codes.Unavailable,
-		// 502 Bad Gateway - UNAVAILABLE.
-		http.StatusBadGateway: codes.Unavailable,
-		// 503 Service Unavailable - UNAVAILABLE.
-		http.StatusServiceUnavailable: codes.Unavailable,
-		// 504 Gateway timeout - UNAVAILABLE.
-		http.StatusGatewayTimeout: codes.Unavailable,
-	}
-)
-
-// Records the states during HPACK decoding. Must be reset once the
-// decoding of the entire headers are finished.
-type decodeState struct {
-	encoding string
-	// statusGen caches the stream status received from the trailer the server
-	// sent.  Client side only.  Do not access directly.  After all trailers are
-	// parsed, use the status method to retrieve the status.
-	statusGen *status.Status
-	// rawStatusCode and rawStatusMsg are set from the raw trailer fields and are not
-	// intended for direct access outside of parsing.
-	rawStatusCode *int
-	rawStatusMsg  string
-	httpStatus    *int
-	// Server side only fields.
-	timeoutSet bool
-	timeout    time.Duration
-	method     string
-	// key-value metadata map from the peer.
-	mdata          map[string][]string
-	statsTags      []byte
-	statsTrace     []byte
-	contentSubtype string
-}
-
-// isReservedHeader checks whether hdr belongs to HTTP2 headers
-// reserved by gRPC protocol. Any other headers are classified as the
-// user-specified metadata.
-func isReservedHeader(hdr string) bool {
-	if hdr != "" && hdr[0] == ':' {
-		return true
-	}
-	switch hdr {
-	case "content-type",
-		"user-agent",
-		"grpc-message-type",
-		"grpc-encoding",
-		"grpc-message",
-		"grpc-status",
-		"grpc-timeout",
-		"grpc-status-details-bin",
-		"te":
-		return true
-	default:
-		return false
-	}
-}
-
-// isWhitelistedHeader checks whether hdr should be propagated
-// into metadata visible to users.
-func isWhitelistedHeader(hdr string) bool {
-	switch hdr {
-	case ":authority", "user-agent":
-		return true
-	default:
-		return false
-	}
-}
-
-// contentSubtype returns the content-subtype for the given content-type.  The
-// given content-type must be a valid content-type that starts with
-// "application/grpc". A content-subtype will follow "application/grpc" after a
-// "+" or ";". See
-// https://github.com/grpc/grpc/blob/master/doc/PROTOCOL-HTTP2.md#requests for
-// more details.
-//
-// If contentType is not a valid content-type for gRPC, the boolean
-// will be false, otherwise true. If content-type == "application/grpc",
-// "application/grpc+", or "application/grpc;", the boolean will be true,
-// but no content-subtype will be returned.
-//
-// contentType is assumed to be lowercase already.
-func contentSubtype(contentType string) (string, bool) {
-	if contentType == baseContentType {
-		return "", true
-	}
-	if !strings.HasPrefix(contentType, baseContentType) {
-		return "", false
-	}
-	// guaranteed since != baseContentType and has baseContentType prefix
-	switch contentType[len(baseContentType)] {
-	case '+', ';':
-		// this will return true for "application/grpc+" or "application/grpc;"
-		// which the previous validContentType function tested to be valid, so we
-		// just say that no content-subtype is specified in this case
-		return contentType[len(baseContentType)+1:], true
-	default:
-		return "", false
-	}
-}
-
-// contentSubtype is assumed to be lowercase
-func contentType(contentSubtype string) string {
-	if contentSubtype == "" {
-		return baseContentType
-	}
-	return baseContentType + "+" + contentSubtype
-}
-
-func (d *decodeState) status() *status.Status {
-	if d.statusGen == nil {
-		// No status-details were provided; generate status using code/msg.
-		d.statusGen = status.New(codes.Code(int32(*(d.rawStatusCode))), d.rawStatusMsg)
-	}
-	return d.statusGen
-}
-
-const binHdrSuffix = "-bin"
-
-func encodeBinHeader(v []byte) string {
-	return base64.RawStdEncoding.EncodeToString(v)
-}
-
-func decodeBinHeader(v string) ([]byte, error) {
-	if len(v)%4 == 0 {
-		// Input was padded, or padding was not necessary.
-		return base64.StdEncoding.DecodeString(v)
-	}
-	return base64.RawStdEncoding.DecodeString(v)
-}
-
-func encodeMetadataHeader(k, v string) string {
-	if strings.HasSuffix(k, binHdrSuffix) {
-		return encodeBinHeader(([]byte)(v))
-	}
-	return v
-}
-
-func decodeMetadataHeader(k, v string) (string, error) {
-	if strings.HasSuffix(k, binHdrSuffix) {
-		b, err := decodeBinHeader(v)
-		return string(b), err
-	}
-	return v, nil
-}
-
-func (d *decodeState) decodeResponseHeader(frame *http2.MetaHeadersFrame) error {
-	for _, hf := range frame.Fields {
-		if err := d.processHeaderField(hf); err != nil {
-			return err
-		}
-	}
-
-	// If grpc status exists, no need to check further.
-	if d.rawStatusCode != nil || d.statusGen != nil {
-		return nil
-	}
-
-	// If grpc status doesn't exist and http status doesn't exist,
-	// then it's a malformed header.
-	if d.httpStatus == nil {
-		return streamErrorf(codes.Internal, "malformed header: doesn't contain status(gRPC or HTTP)")
-	}
-
-	if *(d.httpStatus) != http.StatusOK {
-		code, ok := httpStatusConvTab[*(d.httpStatus)]
-		if !ok {
-			code = codes.Unknown
-		}
-		return streamErrorf(code, http.StatusText(*(d.httpStatus)))
-	}
-
-	// gRPC status doesn't exist and http status is OK.
-	// Set rawStatusCode to be unknown and return nil error.
-	// So that, if the stream has ended this Unknown status
-	// will be propagated to the user.
-	// Otherwise, it will be ignored. In which case, status from
-	// a later trailer, that has StreamEnded flag set, is propagated.
-	code := int(codes.Unknown)
-	d.rawStatusCode = &code
-	return nil
-
-}
-
-func (d *decodeState) addMetadata(k, v string) {
-	if d.mdata == nil {
-		d.mdata = make(map[string][]string)
-	}
-	d.mdata[k] = append(d.mdata[k], v)
-}
-
-func (d *decodeState) processHeaderField(f hpack.HeaderField) error {
-	switch f.Name {
-	case "content-type":
-		contentSubtype, validContentType := contentSubtype(f.Value)
-		if !validContentType {
-			return streamErrorf(codes.Internal, "transport: received the unexpected content-type %q", f.Value)
-		}
-		d.contentSubtype = contentSubtype
-		// TODO: do we want to propagate the whole content-type in the metadata,
-		// or come up with a way to just propagate the content-subtype if it was set?
-		// ie {"content-type": "application/grpc+proto"} or {"content-subtype": "proto"}
-		// in the metadata?
-		d.addMetadata(f.Name, f.Value)
-	case "grpc-encoding":
-		d.encoding = f.Value
-	case "grpc-status":
-		code, err := strconv.Atoi(f.Value)
-		if err != nil {
-			return streamErrorf(codes.Internal, "transport: malformed grpc-status: %v", err)
-		}
-		d.rawStatusCode = &code
-	case "grpc-message":
-		d.rawStatusMsg = decodeGrpcMessage(f.Value)
-	case "grpc-status-details-bin":
-		v, err := decodeBinHeader(f.Value)
-		if err != nil {
-			return streamErrorf(codes.Internal, "transport: malformed grpc-status-details-bin: %v", err)
-		}
-		s := &spb.Status{}
-		if err := proto.Unmarshal(v, s); err != nil {
-			return streamErrorf(codes.Internal, "transport: malformed grpc-status-details-bin: %v", err)
-		}
-		d.statusGen = status.FromProto(s)
-	case "grpc-timeout":
-		d.timeoutSet = true
-		var err error
-		if d.timeout, err = decodeTimeout(f.Value); err != nil {
-			return streamErrorf(codes.Internal, "transport: malformed time-out: %v", err)
-		}
-	case ":path":
-		d.method = f.Value
-	case ":status":
-		code, err := strconv.Atoi(f.Value)
-		if err != nil {
-			return streamErrorf(codes.Internal, "transport: malformed http-status: %v", err)
-		}
-		d.httpStatus = &code
-	case "grpc-tags-bin":
-		v, err := decodeBinHeader(f.Value)
-		if err != nil {
-			return streamErrorf(codes.Internal, "transport: malformed grpc-tags-bin: %v", err)
-		}
-		d.statsTags = v
-		d.addMetadata(f.Name, string(v))
-	case "grpc-trace-bin":
-		v, err := decodeBinHeader(f.Value)
-		if err != nil {
-			return streamErrorf(codes.Internal, "transport: malformed grpc-trace-bin: %v", err)
-		}
-		d.statsTrace = v
-		d.addMetadata(f.Name, string(v))
-	default:
-		if isReservedHeader(f.Name) && !isWhitelistedHeader(f.Name) {
-			break
-		}
-		v, err := decodeMetadataHeader(f.Name, f.Value)
-		if err != nil {
-			errorf("Failed to decode metadata header (%q, %q): %v", f.Name, f.Value, err)
-			return nil
-		}
-		d.addMetadata(f.Name, v)
-	}
-	return nil
-}
-
-type timeoutUnit uint8
-
-const (
-	hour        timeoutUnit = 'H'
-	minute      timeoutUnit = 'M'
-	second      timeoutUnit = 'S'
-	millisecond timeoutUnit = 'm'
-	microsecond timeoutUnit = 'u'
-	nanosecond  timeoutUnit = 'n'
-)
-
-func timeoutUnitToDuration(u timeoutUnit) (d time.Duration, ok bool) {
-	switch u {
-	case hour:
-		return time.Hour, true
-	case minute:
-		return time.Minute, true
-	case second:
-		return time.Second, true
-	case millisecond:
-		return time.Millisecond, true
-	case microsecond:
-		return time.Microsecond, true
-	case nanosecond:
-		return time.Nanosecond, true
-	default:
-	}
-	return
-}
-
-const maxTimeoutValue int64 = 100000000 - 1
-
-// div does integer division and round-up the result. Note that this is
-// equivalent to (d+r-1)/r but has less chance to overflow.
-func div(d, r time.Duration) int64 {
-	if m := d % r; m > 0 {
-		return int64(d/r + 1)
-	}
-	return int64(d / r)
-}
-
-// TODO(zhaoq): It is the simplistic and not bandwidth efficient. Improve it.
-func encodeTimeout(t time.Duration) string {
-	if t <= 0 {
-		return "0n"
-	}
-	if d := div(t, time.Nanosecond); d <= maxTimeoutValue {
-		return strconv.FormatInt(d, 10) + "n"
-	}
-	if d := div(t, time.Microsecond); d <= maxTimeoutValue {
-		return strconv.FormatInt(d, 10) + "u"
-	}
-	if d := div(t, time.Millisecond); d <= maxTimeoutValue {
-		return strconv.FormatInt(d, 10) + "m"
-	}
-	if d := div(t, time.Second); d <= maxTimeoutValue {
-		return strconv.FormatInt(d, 10) + "S"
-	}
-	if d := div(t, time.Minute); d <= maxTimeoutValue {
-		return strconv.FormatInt(d, 10) + "M"
-	}
-	// Note that maxTimeoutValue * time.Hour > MaxInt64.
-	return strconv.FormatInt(div(t, time.Hour), 10) + "H"
-}
-
-func decodeTimeout(s string) (time.Duration, error) {
-	size := len(s)
-	if size < 2 {
-		return 0, fmt.Errorf("transport: timeout string is too short: %q", s)
-	}
-	unit := timeoutUnit(s[size-1])
-	d, ok := timeoutUnitToDuration(unit)
-	if !ok {
-		return 0, fmt.Errorf("transport: timeout unit is not recognized: %q", s)
-	}
-	t, err := strconv.ParseInt(s[:size-1], 10, 64)
-	if err != nil {
-		return 0, err
-	}
-	return d * time.Duration(t), nil
-}
-
-const (
-	spaceByte   = ' '
-	tildeByte   = '~'
-	percentByte = '%'
-)
-
-// encodeGrpcMessage is used to encode status code in header field
-// "grpc-message". It does percent encoding and also replaces invalid utf-8
-// characters with Unicode replacement character.
-//
-// It checks to see if each individual byte in msg is an allowable byte, and
-// then either percent encoding or passing it through. When percent encoding,
-// the byte is converted into hexadecimal notation with a '%' prepended.
-func encodeGrpcMessage(msg string) string {
-	if msg == "" {
-		return ""
-	}
-	lenMsg := len(msg)
-	for i := 0; i < lenMsg; i++ {
-		c := msg[i]
-		if !(c >= spaceByte && c <= tildeByte && c != percentByte) {
-			return encodeGrpcMessageUnchecked(msg)
-		}
-	}
-	return msg
-}
-
-func encodeGrpcMessageUnchecked(msg string) string {
-	var buf bytes.Buffer
-	for len(msg) > 0 {
-		r, size := utf8.DecodeRuneInString(msg)
-		for _, b := range []byte(string(r)) {
-			if size > 1 {
-				// If size > 1, r is not ascii. Always do percent encoding.
-				buf.WriteString(fmt.Sprintf("%%%02X", b))
-				continue
-			}
-
-			// The for loop is necessary even if size == 1. r could be
-			// utf8.RuneError.
-			//
-			// fmt.Sprintf("%%%02X", utf8.RuneError) gives "%FFFD".
-			if b >= spaceByte && b <= tildeByte && b != percentByte {
-				buf.WriteByte(b)
-			} else {
-				buf.WriteString(fmt.Sprintf("%%%02X", b))
-			}
-		}
-		msg = msg[size:]
-	}
-	return buf.String()
-}
-
-// decodeGrpcMessage decodes the msg encoded by encodeGrpcMessage.
-func decodeGrpcMessage(msg string) string {
-	if msg == "" {
-		return ""
-	}
-	lenMsg := len(msg)
-	for i := 0; i < lenMsg; i++ {
-		if msg[i] == percentByte && i+2 < lenMsg {
-			return decodeGrpcMessageUnchecked(msg)
-		}
-	}
-	return msg
-}
-
-func decodeGrpcMessageUnchecked(msg string) string {
-	var buf bytes.Buffer
-	lenMsg := len(msg)
-	for i := 0; i < lenMsg; i++ {
-		c := msg[i]
-		if c == percentByte && i+2 < lenMsg {
-			parsed, err := strconv.ParseUint(msg[i+1:i+3], 16, 8)
-			if err != nil {
-				buf.WriteByte(c)
-			} else {
-				buf.WriteByte(byte(parsed))
-				i += 2
-			}
-		} else {
-			buf.WriteByte(c)
-		}
-	}
-	return buf.String()
-}
-
-type bufWriter struct {
-	buf       []byte
-	offset    int
-	batchSize int
-	conn      net.Conn
-	err       error
-
-	onFlush func()
-}
-
-func newBufWriter(conn net.Conn, batchSize int) *bufWriter {
-	return &bufWriter{
-		buf:       make([]byte, batchSize*2),
-		batchSize: batchSize,
-		conn:      conn,
-	}
-}
-
-func (w *bufWriter) Write(b []byte) (n int, err error) {
-	if w.err != nil {
-		return 0, w.err
-	}
-	for len(b) > 0 {
-		nn := copy(w.buf[w.offset:], b)
-		b = b[nn:]
-		w.offset += nn
-		n += nn
-		if w.offset >= w.batchSize {
-			err = w.Flush()
-		}
-	}
-	return n, err
-}
-
-func (w *bufWriter) Flush() error {
-	if w.err != nil {
-		return w.err
-	}
-	if w.offset == 0 {
-		return nil
-	}
-	if w.onFlush != nil {
-		w.onFlush()
-	}
-	_, w.err = w.conn.Write(w.buf[:w.offset])
-	w.offset = 0
-	return w.err
-}
-
-type framer struct {
-	writer *bufWriter
-	fr     *http2.Framer
-}
-
-func newFramer(conn net.Conn, writeBufferSize, readBufferSize int) *framer {
-	r := bufio.NewReaderSize(conn, readBufferSize)
-	w := newBufWriter(conn, writeBufferSize)
-	f := &framer{
-		writer: w,
-		fr:     http2.NewFramer(w, r),
-	}
-	// Opt-in to Frame reuse API on framer to reduce garbage.
-	// Frames aren't safe to read from after a subsequent call to ReadFrame.
-	f.fr.SetReuseFrames()
-	f.fr.ReadMetaHeaders = hpack.NewDecoder(http2InitHeaderTableSize, nil)
-	return f
-}
diff --git a/vendor/google.golang.org/grpc/transport/log.go b/vendor/google.golang.org/grpc/transport/log.go
deleted file mode 100644
index ac8e358c5..000000000
--- a/vendor/google.golang.org/grpc/transport/log.go
+++ /dev/null
@@ -1,50 +0,0 @@
-/*
- *
- * Copyright 2017 gRPC authors.
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *     http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- *
- */
-
-// This file contains wrappers for grpclog functions.
-// The transport package only logs to verbose level 2 by default.
-
-package transport
-
-import "google.golang.org/grpc/grpclog"
-
-const logLevel = 2
-
-func infof(format string, args ...interface{}) {
-	if grpclog.V(logLevel) {
-		grpclog.Infof(format, args...)
-	}
-}
-
-func warningf(format string, args ...interface{}) {
-	if grpclog.V(logLevel) {
-		grpclog.Warningf(format, args...)
-	}
-}
-
-func errorf(format string, args ...interface{}) {
-	if grpclog.V(logLevel) {
-		grpclog.Errorf(format, args...)
-	}
-}
-
-func fatalf(format string, args ...interface{}) {
-	if grpclog.V(logLevel) {
-		grpclog.Fatalf(format, args...)
-	}
-}
diff --git a/vendor/google.golang.org/grpc/transport/transport.go b/vendor/google.golang.org/grpc/transport/transport.go
deleted file mode 100644
index f51f87888..000000000
--- a/vendor/google.golang.org/grpc/transport/transport.go
+++ /dev/null
@@ -1,708 +0,0 @@
-/*
- *
- * Copyright 2014 gRPC authors.
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *     http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- *
- */
-
-// Package transport defines and implements message oriented communication
-// channel to complete various transactions (e.g., an RPC).  It is meant for
-// grpc-internal usage and is not intended to be imported directly by users.
-package transport // externally used as import "google.golang.org/grpc/transport"
-
-import (
-	"errors"
-	"fmt"
-	"io"
-	"net"
-	"sync"
-	"sync/atomic"
-
-	"golang.org/x/net/context"
-	"google.golang.org/grpc/codes"
-	"google.golang.org/grpc/credentials"
-	"google.golang.org/grpc/keepalive"
-	"google.golang.org/grpc/metadata"
-	"google.golang.org/grpc/stats"
-	"google.golang.org/grpc/status"
-	"google.golang.org/grpc/tap"
-)
-
-// recvMsg represents the received msg from the transport. All transport
-// protocol specific info has been removed.
-type recvMsg struct {
-	data []byte
-	// nil: received some data
-	// io.EOF: stream is completed. data is nil.
-	// other non-nil error: transport failure. data is nil.
-	err error
-}
-
-// recvBuffer is an unbounded channel of recvMsg structs.
-// Note recvBuffer differs from controlBuffer only in that recvBuffer
-// holds a channel of only recvMsg structs instead of objects implementing "item" interface.
-// recvBuffer is written to much more often than
-// controlBuffer and using strict recvMsg structs helps avoid allocation in "recvBuffer.put"
-type recvBuffer struct {
-	c       chan recvMsg
-	mu      sync.Mutex
-	backlog []recvMsg
-	err     error
-}
-
-func newRecvBuffer() *recvBuffer {
-	b := &recvBuffer{
-		c: make(chan recvMsg, 1),
-	}
-	return b
-}
-
-func (b *recvBuffer) put(r recvMsg) {
-	b.mu.Lock()
-	if b.err != nil {
-		b.mu.Unlock()
-		// An error had occurred earlier, don't accept more
-		// data or errors.
-		return
-	}
-	b.err = r.err
-	if len(b.backlog) == 0 {
-		select {
-		case b.c <- r:
-			b.mu.Unlock()
-			return
-		default:
-		}
-	}
-	b.backlog = append(b.backlog, r)
-	b.mu.Unlock()
-}
-
-func (b *recvBuffer) load() {
-	b.mu.Lock()
-	if len(b.backlog) > 0 {
-		select {
-		case b.c <- b.backlog[0]:
-			b.backlog[0] = recvMsg{}
-			b.backlog = b.backlog[1:]
-		default:
-		}
-	}
-	b.mu.Unlock()
-}
-
-// get returns the channel that receives a recvMsg in the buffer.
-//
-// Upon receipt of a recvMsg, the caller should call load to send another
-// recvMsg onto the channel if there is any.
-func (b *recvBuffer) get() <-chan recvMsg {
-	return b.c
-}
-
-//
-// recvBufferReader implements io.Reader interface to read the data from
-// recvBuffer.
-type recvBufferReader struct {
-	ctx     context.Context
-	ctxDone <-chan struct{} // cache of ctx.Done() (for performance).
-	recv    *recvBuffer
-	last    []byte // Stores the remaining data in the previous calls.
-	err     error
-}
-
-// Read reads the next len(p) bytes from last. If last is drained, it tries to
-// read additional data from recv. It blocks if there no additional data available
-// in recv. If Read returns any non-nil error, it will continue to return that error.
-func (r *recvBufferReader) Read(p []byte) (n int, err error) {
-	if r.err != nil {
-		return 0, r.err
-	}
-	n, r.err = r.read(p)
-	return n, r.err
-}
-
-func (r *recvBufferReader) read(p []byte) (n int, err error) {
-	if r.last != nil && len(r.last) > 0 {
-		// Read remaining data left in last call.
-		copied := copy(p, r.last)
-		r.last = r.last[copied:]
-		return copied, nil
-	}
-	select {
-	case <-r.ctxDone:
-		return 0, ContextErr(r.ctx.Err())
-	case m := <-r.recv.get():
-		r.recv.load()
-		if m.err != nil {
-			return 0, m.err
-		}
-		copied := copy(p, m.data)
-		r.last = m.data[copied:]
-		return copied, nil
-	}
-}
-
-type streamState uint32
-
-const (
-	streamActive    streamState = iota
-	streamWriteDone             // EndStream sent
-	streamReadDone              // EndStream received
-	streamDone                  // the entire stream is finished.
-)
-
-// Stream represents an RPC in the transport layer.
-type Stream struct {
-	id           uint32
-	st           ServerTransport    // nil for client side Stream
-	ctx          context.Context    // the associated context of the stream
-	cancel       context.CancelFunc // always nil for client side Stream
-	done         chan struct{}      // closed at the end of stream to unblock writers. On the client side.
-	ctxDone      <-chan struct{}    // same as done chan but for server side. Cache of ctx.Done() (for performance)
-	method       string             // the associated RPC method of the stream
-	recvCompress string
-	sendCompress string
-	buf          *recvBuffer
-	trReader     io.Reader
-	fc           *inFlow
-	recvQuota    uint32
-	wq           *writeQuota
-
-	// Callback to state application's intentions to read data. This
-	// is used to adjust flow control, if needed.
-	requestRead func(int)
-
-	headerChan chan struct{} // closed to indicate the end of header metadata.
-	headerDone uint32        // set when headerChan is closed. Used to avoid closing headerChan multiple times.
-
-	// hdrMu protects header and trailer metadata on the server-side.
-	hdrMu   sync.Mutex
-	header  metadata.MD // the received header metadata.
-	trailer metadata.MD // the key-value map of trailer metadata.
-
-	// On the server-side, headerSent is atomically set to 1 when the headers are sent out.
-	headerSent uint32
-
-	state streamState
-
-	// On client-side it is the status error received from the server.
-	// On server-side it is unused.
-	status *status.Status
-
-	bytesReceived uint32 // indicates whether any bytes have been received on this stream
-	unprocessed   uint32 // set if the server sends a refused stream or GOAWAY including this stream
-
-	// contentSubtype is the content-subtype for requests.
-	// this must be lowercase or the behavior is undefined.
-	contentSubtype string
-}
-
-// isHeaderSent is only valid on the server-side.
-func (s *Stream) isHeaderSent() bool {
-	return atomic.LoadUint32(&s.headerSent) == 1
-}
-
-// updateHeaderSent updates headerSent and returns true
-// if it was alreay set. It is valid only on server-side.
-func (s *Stream) updateHeaderSent() bool {
-	return atomic.SwapUint32(&s.headerSent, 1) == 1
-}
-
-func (s *Stream) swapState(st streamState) streamState {
-	return streamState(atomic.SwapUint32((*uint32)(&s.state), uint32(st)))
-}
-
-func (s *Stream) compareAndSwapState(oldState, newState streamState) bool {
-	return atomic.CompareAndSwapUint32((*uint32)(&s.state), uint32(oldState), uint32(newState))
-}
-
-func (s *Stream) getState() streamState {
-	return streamState(atomic.LoadUint32((*uint32)(&s.state)))
-}
-
-func (s *Stream) waitOnHeader() error {
-	if s.headerChan == nil {
-		// On the server headerChan is always nil since a stream originates
-		// only after having received headers.
-		return nil
-	}
-	select {
-	case <-s.ctx.Done():
-		return ContextErr(s.ctx.Err())
-	case <-s.headerChan:
-		return nil
-	}
-}
-
-// RecvCompress returns the compression algorithm applied to the inbound
-// message. It is empty string if there is no compression applied.
-func (s *Stream) RecvCompress() string {
-	if err := s.waitOnHeader(); err != nil {
-		return ""
-	}
-	return s.recvCompress
-}
-
-// SetSendCompress sets the compression algorithm to the stream.
-func (s *Stream) SetSendCompress(str string) {
-	s.sendCompress = str
-}
-
-// Done returns a chanel which is closed when it receives the final status
-// from the server.
-func (s *Stream) Done() <-chan struct{} {
-	return s.done
-}
-
-// Header acquires the key-value pairs of header metadata once it
-// is available. It blocks until i) the metadata is ready or ii) there is no
-// header metadata or iii) the stream is canceled/expired.
-func (s *Stream) Header() (metadata.MD, error) {
-	err := s.waitOnHeader()
-	// Even if the stream is closed, header is returned if available.
-	select {
-	case <-s.headerChan:
-		if s.header == nil {
-			return nil, nil
-		}
-		return s.header.Copy(), nil
-	default:
-	}
-	return nil, err
-}
-
-// Trailer returns the cached trailer metedata. Note that if it is not called
-// after the entire stream is done, it could return an empty MD. Client
-// side only.
-// It can be safely read only after stream has ended that is either read
-// or write have returned io.EOF.
-func (s *Stream) Trailer() metadata.MD {
-	c := s.trailer.Copy()
-	return c
-}
-
-// ServerTransport returns the underlying ServerTransport for the stream.
-// The client side stream always returns nil.
-func (s *Stream) ServerTransport() ServerTransport {
-	return s.st
-}
-
-// ContentSubtype returns the content-subtype for a request. For example, a
-// content-subtype of "proto" will result in a content-type of
-// "application/grpc+proto". This will always be lowercase.  See
-// https://github.com/grpc/grpc/blob/master/doc/PROTOCOL-HTTP2.md#requests for
-// more details.
-func (s *Stream) ContentSubtype() string {
-	return s.contentSubtype
-}
-
-// Context returns the context of the stream.
-func (s *Stream) Context() context.Context {
-	return s.ctx
-}
-
-// Method returns the method for the stream.
-func (s *Stream) Method() string {
-	return s.method
-}
-
-// Status returns the status received from the server.
-// Status can be read safely only after the stream has ended,
-// that is, read or write has returned io.EOF.
-func (s *Stream) Status() *status.Status {
-	return s.status
-}
-
-// SetHeader sets the header metadata. This can be called multiple times.
-// Server side only.
-// This should not be called in parallel to other data writes.
-func (s *Stream) SetHeader(md metadata.MD) error {
-	if md.Len() == 0 {
-		return nil
-	}
-	if s.isHeaderSent() || s.getState() == streamDone {
-		return ErrIllegalHeaderWrite
-	}
-	s.hdrMu.Lock()
-	s.header = metadata.Join(s.header, md)
-	s.hdrMu.Unlock()
-	return nil
-}
-
-// SendHeader sends the given header metadata. The given metadata is
-// combined with any metadata set by previous calls to SetHeader and
-// then written to the transport stream.
-func (s *Stream) SendHeader(md metadata.MD) error {
-	t := s.ServerTransport()
-	return t.WriteHeader(s, md)
-}
-
-// SetTrailer sets the trailer metadata which will be sent with the RPC status
-// by the server. This can be called multiple times. Server side only.
-// This should not be called parallel to other data writes.
-func (s *Stream) SetTrailer(md metadata.MD) error {
-	if md.Len() == 0 {
-		return nil
-	}
-	if s.getState() == streamDone {
-		return ErrIllegalHeaderWrite
-	}
-	s.hdrMu.Lock()
-	s.trailer = metadata.Join(s.trailer, md)
-	s.hdrMu.Unlock()
-	return nil
-}
-
-func (s *Stream) write(m recvMsg) {
-	s.buf.put(m)
-}
-
-// Read reads all p bytes from the wire for this stream.
-func (s *Stream) Read(p []byte) (n int, err error) {
-	// Don't request a read if there was an error earlier
-	if er := s.trReader.(*transportReader).er; er != nil {
-		return 0, er
-	}
-	s.requestRead(len(p))
-	return io.ReadFull(s.trReader, p)
-}
-
-// tranportReader reads all the data available for this Stream from the transport and
-// passes them into the decoder, which converts them into a gRPC message stream.
-// The error is io.EOF when the stream is done or another non-nil error if
-// the stream broke.
-type transportReader struct {
-	reader io.Reader
-	// The handler to control the window update procedure for both this
-	// particular stream and the associated transport.
-	windowHandler func(int)
-	er            error
-}
-
-func (t *transportReader) Read(p []byte) (n int, err error) {
-	n, err = t.reader.Read(p)
-	if err != nil {
-		t.er = err
-		return
-	}
-	t.windowHandler(n)
-	return
-}
-
-// BytesReceived indicates whether any bytes have been received on this stream.
-func (s *Stream) BytesReceived() bool {
-	return atomic.LoadUint32(&s.bytesReceived) == 1
-}
-
-// Unprocessed indicates whether the server did not process this stream --
-// i.e. it sent a refused stream or GOAWAY including this stream ID.
-func (s *Stream) Unprocessed() bool {
-	return atomic.LoadUint32(&s.unprocessed) == 1
-}
-
-// GoString is implemented by Stream so context.String() won't
-// race when printing %#v.
-func (s *Stream) GoString() string {
-	return fmt.Sprintf("<stream: %p, %v>", s, s.method)
-}
-
-// state of transport
-type transportState int
-
-const (
-	reachable transportState = iota
-	closing
-	draining
-)
-
-// ServerConfig consists of all the configurations to establish a server transport.
-type ServerConfig struct {
-	MaxStreams            uint32
-	AuthInfo              credentials.AuthInfo
-	InTapHandle           tap.ServerInHandle
-	StatsHandler          stats.Handler
-	KeepaliveParams       keepalive.ServerParameters
-	KeepalivePolicy       keepalive.EnforcementPolicy
-	InitialWindowSize     int32
-	InitialConnWindowSize int32
-	WriteBufferSize       int
-	ReadBufferSize        int
-	ChannelzParentID      int64
-}
-
-// NewServerTransport creates a ServerTransport with conn or non-nil error
-// if it fails.
-func NewServerTransport(protocol string, conn net.Conn, config *ServerConfig) (ServerTransport, error) {
-	return newHTTP2Server(conn, config)
-}
-
-// ConnectOptions covers all relevant options for communicating with the server.
-type ConnectOptions struct {
-	// UserAgent is the application user agent.
-	UserAgent string
-	// Authority is the :authority pseudo-header to use. This field has no effect if
-	// TransportCredentials is set.
-	Authority string
-	// Dialer specifies how to dial a network address.
-	Dialer func(context.Context, string) (net.Conn, error)
-	// FailOnNonTempDialError specifies if gRPC fails on non-temporary dial errors.
-	FailOnNonTempDialError bool
-	// PerRPCCredentials stores the PerRPCCredentials required to issue RPCs.
-	PerRPCCredentials []credentials.PerRPCCredentials
-	// TransportCredentials stores the Authenticator required to setup a client connection.
-	TransportCredentials credentials.TransportCredentials
-	// KeepaliveParams stores the keepalive parameters.
-	KeepaliveParams keepalive.ClientParameters
-	// StatsHandler stores the handler for stats.
-	StatsHandler stats.Handler
-	// InitialWindowSize sets the initial window size for a stream.
-	InitialWindowSize int32
-	// InitialConnWindowSize sets the initial window size for a connection.
-	InitialConnWindowSize int32
-	// WriteBufferSize sets the size of write buffer which in turn determines how much data can be batched before it's written on the wire.
-	WriteBufferSize int
-	// ReadBufferSize sets the size of read buffer, which in turn determines how much data can be read at most for one read syscall.
-	ReadBufferSize int
-	// ChannelzParentID sets the addrConn id which initiate the creation of this client transport.
-	ChannelzParentID int64
-}
-
-// TargetInfo contains the information of the target such as network address and metadata.
-type TargetInfo struct {
-	Addr      string
-	Metadata  interface{}
-	Authority string
-}
-
-// NewClientTransport establishes the transport with the required ConnectOptions
-// and returns it to the caller.
-func NewClientTransport(connectCtx, ctx context.Context, target TargetInfo, opts ConnectOptions, onSuccess func()) (ClientTransport, error) {
-	return newHTTP2Client(connectCtx, ctx, target, opts, onSuccess)
-}
-
-// Options provides additional hints and information for message
-// transmission.
-type Options struct {
-	// Last indicates whether this write is the last piece for
-	// this stream.
-	Last bool
-
-	// Delay is a hint to the transport implementation for whether
-	// the data could be buffered for a batching write. The
-	// transport implementation may ignore the hint.
-	Delay bool
-}
-
-// CallHdr carries the information of a particular RPC.
-type CallHdr struct {
-	// Host specifies the peer's host.
-	Host string
-
-	// Method specifies the operation to perform.
-	Method string
-
-	// SendCompress specifies the compression algorithm applied on
-	// outbound message.
-	SendCompress string
-
-	// Creds specifies credentials.PerRPCCredentials for a call.
-	Creds credentials.PerRPCCredentials
-
-	// Flush indicates whether a new stream command should be sent
-	// to the peer without waiting for the first data. This is
-	// only a hint.
-	// If it's true, the transport may modify the flush decision
-	// for performance purposes.
-	// If it's false, new stream will never be flushed.
-	Flush bool
-
-	// ContentSubtype specifies the content-subtype for a request. For example, a
-	// content-subtype of "proto" will result in a content-type of
-	// "application/grpc+proto". The value of ContentSubtype must be all
-	// lowercase, otherwise the behavior is undefined. See
-	// https://github.com/grpc/grpc/blob/master/doc/PROTOCOL-HTTP2.md#requests
-	// for more details.
-	ContentSubtype string
-}
-
-// ClientTransport is the common interface for all gRPC client-side transport
-// implementations.
-type ClientTransport interface {
-	// Close tears down this transport. Once it returns, the transport
-	// should not be accessed any more. The caller must make sure this
-	// is called only once.
-	Close() error
-
-	// GracefulClose starts to tear down the transport. It stops accepting
-	// new RPCs and wait the completion of the pending RPCs.
-	GracefulClose() error
-
-	// Write sends the data for the given stream. A nil stream indicates
-	// the write is to be performed on the transport as a whole.
-	Write(s *Stream, hdr []byte, data []byte, opts *Options) error
-
-	// NewStream creates a Stream for an RPC.
-	NewStream(ctx context.Context, callHdr *CallHdr) (*Stream, error)
-
-	// CloseStream clears the footprint of a stream when the stream is
-	// not needed any more. The err indicates the error incurred when
-	// CloseStream is called. Must be called when a stream is finished
-	// unless the associated transport is closing.
-	CloseStream(stream *Stream, err error)
-
-	// Error returns a channel that is closed when some I/O error
-	// happens. Typically the caller should have a goroutine to monitor
-	// this in order to take action (e.g., close the current transport
-	// and create a new one) in error case. It should not return nil
-	// once the transport is initiated.
-	Error() <-chan struct{}
-
-	// GoAway returns a channel that is closed when ClientTransport
-	// receives the draining signal from the server (e.g., GOAWAY frame in
-	// HTTP/2).
-	GoAway() <-chan struct{}
-
-	// GetGoAwayReason returns the reason why GoAway frame was received.
-	GetGoAwayReason() GoAwayReason
-
-	// IncrMsgSent increments the number of message sent through this transport.
-	IncrMsgSent()
-
-	// IncrMsgRecv increments the number of message received through this transport.
-	IncrMsgRecv()
-}
-
-// ServerTransport is the common interface for all gRPC server-side transport
-// implementations.
-//
-// Methods may be called concurrently from multiple goroutines, but
-// Write methods for a given Stream will be called serially.
-type ServerTransport interface {
-	// HandleStreams receives incoming streams using the given handler.
-	HandleStreams(func(*Stream), func(context.Context, string) context.Context)
-
-	// WriteHeader sends the header metadata for the given stream.
-	// WriteHeader may not be called on all streams.
-	WriteHeader(s *Stream, md metadata.MD) error
-
-	// Write sends the data for the given stream.
-	// Write may not be called on all streams.
-	Write(s *Stream, hdr []byte, data []byte, opts *Options) error
-
-	// WriteStatus sends the status of a stream to the client.  WriteStatus is
-	// the final call made on a stream and always occurs.
-	WriteStatus(s *Stream, st *status.Status) error
-
-	// Close tears down the transport. Once it is called, the transport
-	// should not be accessed any more. All the pending streams and their
-	// handlers will be terminated asynchronously.
-	Close() error
-
-	// RemoteAddr returns the remote network address.
-	RemoteAddr() net.Addr
-
-	// Drain notifies the client this ServerTransport stops accepting new RPCs.
-	Drain()
-
-	// IncrMsgSent increments the number of message sent through this transport.
-	IncrMsgSent()
-
-	// IncrMsgRecv increments the number of message received through this transport.
-	IncrMsgRecv()
-}
-
-// streamErrorf creates an StreamError with the specified error code and description.
-func streamErrorf(c codes.Code, format string, a ...interface{}) StreamError {
-	return StreamError{
-		Code: c,
-		Desc: fmt.Sprintf(format, a...),
-	}
-}
-
-// connectionErrorf creates an ConnectionError with the specified error description.
-func connectionErrorf(temp bool, e error, format string, a ...interface{}) ConnectionError {
-	return ConnectionError{
-		Desc: fmt.Sprintf(format, a...),
-		temp: temp,
-		err:  e,
-	}
-}
-
-// ConnectionError is an error that results in the termination of the
-// entire connection and the retry of all the active streams.
-type ConnectionError struct {
-	Desc string
-	temp bool
-	err  error
-}
-
-func (e ConnectionError) Error() string {
-	return fmt.Sprintf("connection error: desc = %q", e.Desc)
-}
-
-// Temporary indicates if this connection error is temporary or fatal.
-func (e ConnectionError) Temporary() bool {
-	return e.temp
-}
-
-// Origin returns the original error of this connection error.
-func (e ConnectionError) Origin() error {
-	// Never return nil error here.
-	// If the original error is nil, return itself.
-	if e.err == nil {
-		return e
-	}
-	return e.err
-}
-
-var (
-	// ErrConnClosing indicates that the transport is closing.
-	ErrConnClosing = connectionErrorf(true, nil, "transport is closing")
-	// errStreamDrain indicates that the stream is rejected because the
-	// connection is draining. This could be caused by goaway or balancer
-	// removing the address.
-	errStreamDrain = streamErrorf(codes.Unavailable, "the connection is draining")
-	// errStreamDone is returned from write at the client side to indiacte application
-	// layer of an error.
-	errStreamDone = errors.New("the stream is done")
-	// StatusGoAway indicates that the server sent a GOAWAY that included this
-	// stream's ID in unprocessed RPCs.
-	statusGoAway = status.New(codes.Unavailable, "the stream is rejected because server is draining the connection")
-)
-
-// TODO: See if we can replace StreamError with status package errors.
-
-// StreamError is an error that only affects one stream within a connection.
-type StreamError struct {
-	Code codes.Code
-	Desc string
-}
-
-func (e StreamError) Error() string {
-	return fmt.Sprintf("stream error: code = %s desc = %q", e.Code, e.Desc)
-}
-
-// GoAwayReason contains the reason for the GoAway frame received.
-type GoAwayReason uint8
-
-const (
-	// GoAwayInvalid indicates that no GoAway frame is received.
-	GoAwayInvalid GoAwayReason = 0
-	// GoAwayNoReason is the default value when GoAway frame is received.
-	GoAwayNoReason GoAwayReason = 1
-	// GoAwayTooManyPings indicates that a GoAway frame with
-	// ErrCodeEnhanceYourCalm was received and that the debug data said
-	// "too_many_pings".
-	GoAwayTooManyPings GoAwayReason = 2
-)
diff --git a/vendor/google.golang.org/grpc/version.go b/vendor/google.golang.org/grpc/version.go
deleted file mode 100644
index 7f124fbd5..000000000
--- a/vendor/google.golang.org/grpc/version.go
+++ /dev/null
@@ -1,22 +0,0 @@
-/*
- *
- * Copyright 2018 gRPC authors.
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *     http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- *
- */
-
-package grpc
-
-// Version is the current grpc version.
-const Version = "1.13.0"