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, 46 deletions

diff --git a/middleware/proxy/setup.go b/middleware/proxy/setup.go
deleted file mode 100644
index d55065734..000000000
--- a/middleware/proxy/setup.go
+++ /dev/null
@@ -1,46 +0,0 @@
-package proxy
-
-import (
-	"github.com/coredns/coredns/core/dnsserver"
-	"github.com/coredns/coredns/middleware"
-
-	"github.com/mholt/caddy"
-)
-
-func init() {
-	caddy.RegisterPlugin("proxy", caddy.Plugin{
-		ServerType: "dns",
-		Action:     setup,
-	})
-}
-
-func setup(c *caddy.Controller) error {
-	upstreams, err := NewStaticUpstreams(&c.Dispenser)
-	if err != nil {
-		return middleware.Error("proxy", err)
-	}
-
-	t := dnsserver.GetConfig(c).Handler("trace")
-	P := &Proxy{Trace: t}
-	dnsserver.GetConfig(c).AddMiddleware(func(next middleware.Handler) middleware.Handler {
-		P.Next = next
-		P.Upstreams = &upstreams
-		return P
-	})
-
-	c.OnStartup(OnStartupMetrics)
-
-	for i := range upstreams {
-		u := upstreams[i]
-		c.OnStartup(func() error {
-			return u.Exchanger().OnStartup(P)
-		})
-		c.OnShutdown(func() error {
-			return u.Exchanger().OnShutdown(P)
-		})
-		// Register shutdown handlers.
-		c.OnShutdown(u.Stop)
-	}
-
-	return nil
-}