server/discovery: add discovery service

appengine/cmd/helloworld/frontend/handler.go

 // Copyright 2015 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 // Package frontend implements HTTP server that handles requests to default
 // module.
 package frontend
 
 import (
         "net/http"
         "strings"
 
         "github.com/julienschmidt/httprouter"
         "golang.org/x/net/context"
         "google.golang.org/appengine"
 
         "github.com/luci/gae/service/info"
         "github.com/luci/luci-go/appengine/cmd/helloworld/proto"
         "github.com/luci/luci-go/appengine/gaeauth/server"
         "github.com/luci/luci-go/appengine/gaemiddleware"
         "github.com/luci/luci-go/server/auth"
+        "github.com/luci/luci-go/server/discovery"
         "github.com/luci/luci-go/server/middleware"
         "github.com/luci/luci-go/server/prpc"
         "github.com/luci/luci-go/server/templates"
 )
 
 // templateBundle is used to render HTML templates. It provides a base args
 // passed to all templates.
 var templateBundle = &templates.Bundle{
         Loader:    templates.FileSystemLoader("templates"),
         DebugMode: appengine.IsDevAppServer(),
@@ skipping 38 matching lines @@
 
 //// Routes.
 
 func init() {
         router := httprouter.New()
         server.InstallHandlers(router, base)
         router.GET("/", base(auth.Authenticate(indexPage)))
 
         var api prpc.Server
         helloworld.RegisterGreeterServer(&api, &greeterService{})
+        discovery.Enable(&api)
         api.InstallHandlers(router, base)
 
         http.DefaultServeMux.Handle("/", router)
 }
 
 //// Handlers.
 
 func indexPage(c context.Context, w http.ResponseWriter, r *http.Request, p httprouter.Params) {
         templates.MustRender(c, w, "pages/index.html", nil)
 }