1 files changed, 0 insertions, 113 deletions
diff --git a/middleware/trace/setup.go b/middleware/trace/setup.go
deleted file mode 100644
index 601472fee..000000000
--- a/middleware/trace/setup.go
+++ /dev/null
@@ -1,113 +0,0 @@
-package trace
-
-import (
-	"fmt"
-	"strconv"
-	"strings"
-
-	"github.com/coredns/coredns/core/dnsserver"
-	"github.com/coredns/coredns/middleware"
-
-	"github.com/mholt/caddy"
-)
-
-func init() {
-	caddy.RegisterPlugin("trace", caddy.Plugin{
-		ServerType: "dns",
-		Action:     setup,
-	})
-}
-
-func setup(c *caddy.Controller) error {
-	t, err := traceParse(c)
-	if err != nil {
-		return middleware.Error("trace", err)
-	}
-
-	dnsserver.GetConfig(c).AddMiddleware(func(next middleware.Handler) middleware.Handler {
-		t.Next = next
-		return t
-	})
-
-	c.OnStartup(t.OnStartup)
-
-	return nil
-}
-
-func traceParse(c *caddy.Controller) (*trace, error) {
-	var (
-		tr  = &trace{Endpoint: defEP, EndpointType: defEpType, every: 1, serviceName: defServiceName}
-		err error
-	)
-
-	cfg := dnsserver.GetConfig(c)
-	tr.ServiceEndpoint = cfg.ListenHost + ":" + cfg.Port
-	for c.Next() { // trace
-		var err error
-		args := c.RemainingArgs()
-		switch len(args) {
-		case 0:
-			tr.Endpoint, err = normalizeEndpoint(tr.EndpointType, defEP)
-		case 1:
-			tr.Endpoint, err = normalizeEndpoint(defEpType, args[0])
-		case 2:
-			tr.EndpointType = strings.ToLower(args[0])
-			tr.Endpoint, err = normalizeEndpoint(tr.EndpointType, args[1])
-		default:
-			err = c.ArgErr()
-		}
-		if err != nil {
-			return tr, err
-		}
-		for c.NextBlock() {
-			switch c.Val() {
-			case "every":
-				args := c.RemainingArgs()
-				if len(args) != 1 {
-					return nil, c.ArgErr()
-				}
-				tr.every, err = strconv.ParseUint(args[0], 10, 64)
-				if err != nil {
-					return nil, err
-				}
-			case "service":
-				args := c.RemainingArgs()
-				if len(args) != 1 {
-					return nil, c.ArgErr()
-				}
-				tr.serviceName = args[0]
-			case "client_server":
-				args := c.RemainingArgs()
-				if len(args) > 1 {
-					return nil, c.ArgErr()
-				}
-				tr.clientServer = true
-				if len(args) == 1 {
-					tr.clientServer, err = strconv.ParseBool(args[0])
-				}
-				if err != nil {
-					return nil, err
-				}
-			}
-		}
-	}
-	return tr, err
-}
-
-func normalizeEndpoint(epType, ep string) (string, error) {
-	switch epType {
-	case "zipkin":
-		if !strings.Contains(ep, "http") {
-			ep = "http://" + ep + "/api/v1/spans"
-		}
-		return ep, nil
-	default:
-		return "", fmt.Errorf("tracing endpoint type '%s' is not supported", epType)
-	}
-}
-
-const (
-	defEP          = "localhost:9411"
-	defEpType      = "zipkin"
-	defServiceName = "coredns"
-)