Remove the word middleware (#1067)

* Rename middleware to plugin

first pass; mostly used 'sed', few spots where I manually changed
text.

This still builds a coredns binary.

* fmt error

* Rename AddMiddleware to AddPlugin

* Readd AddMiddleware to remain backwards compat

1 files changed, 0 insertions, 55 deletions

diff --git a/middleware/kubernetes/reverse.go b/middleware/kubernetes/reverse.go
deleted file mode 100644
index 25ece8035..000000000
--- a/middleware/kubernetes/reverse.go
+++ /dev/null
@@ -1,55 +0,0 @@
-package kubernetes
-
-import (
-	"strings"
-
-	"github.com/coredns/coredns/middleware"
-	"github.com/coredns/coredns/middleware/etcd/msg"
-	"github.com/coredns/coredns/middleware/pkg/dnsutil"
-	"github.com/coredns/coredns/request"
-)
-
-// Reverse implements the ServiceBackend interface.
-func (k *Kubernetes) Reverse(state request.Request, exact bool, opt middleware.Options) ([]msg.Service, error) {
-
-	ip := dnsutil.ExtractAddressFromReverse(state.Name())
-	if ip == "" {
-		return nil, nil
-	}
-
-	records := k.serviceRecordForIP(ip, state.Name())
-	return records, nil
-}
-
-// serviceRecordForIP gets a service record with a cluster ip matching the ip argument
-// If a service cluster ip does not match, it checks all endpoints
-func (k *Kubernetes) serviceRecordForIP(ip, name string) []msg.Service {
-	// First check services with cluster ips
-	svcList := k.APIConn.ServiceList()
-
-	for _, service := range svcList {
-		if (len(k.Namespaces) > 0) && !k.namespaceExposed(service.Namespace) {
-			continue
-		}
-		if service.Spec.ClusterIP == ip {
-			domain := strings.Join([]string{service.Name, service.Namespace, Svc, k.primaryZone()}, ".")
-			return []msg.Service{{Host: domain}}
-		}
-	}
-	// If no cluster ips match, search endpoints
-	epList := k.APIConn.EndpointsList()
-	for _, ep := range epList.Items {
-		if (len(k.Namespaces) > 0) && !k.namespaceExposed(ep.ObjectMeta.Namespace) {
-			continue
-		}
-		for _, eps := range ep.Subsets {
-			for _, addr := range eps.Addresses {
-				if addr.IP == ip {
-					domain := strings.Join([]string{endpointHostname(addr), ep.ObjectMeta.Name, ep.ObjectMeta.Namespace, Svc, k.primaryZone()}, ".")
-					return []msg.Service{{Host: domain}}
-				}
-			}
-		}
-	}
-	return nil
-}