*: add cluster proxy

etcdmain/grpc_proxy.go

@@ -89,10 +89,12 @@ func startGRPCProxy(cmd *cobra.Command, args []string) {
 
 	kvp := grpcproxy.NewKvProxy(client)
 	watchp := grpcproxy.NewWatchProxy(client)
+	clusterp := grpcproxy.NewClusterProxy(client)
 
 	server := grpc.NewServer()
 	pb.RegisterKVServer(server, kvp)
 	pb.RegisterWatchServer(server, watchp)
+	pb.RegisterClusterServer(server, clusterp)
 
 	server.Serve(l)
 }

proxy/grpcproxy/cluster.go

@@ -0,0 +1,52 @@
+// Copyright 2016 The etcd 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 grpcproxy
+
+import (
+	"github.com/coreos/etcd/clientv3"
+	pb "github.com/coreos/etcd/etcdserver/etcdserverpb"
+
+	"golang.org/x/net/context"
+)
+
+type clusterProxy struct {
+	client *clientv3.Client
+}
+
+func NewClusterProxy(c *clientv3.Client) pb.ClusterServer {
+	return &clusterProxy{
+		client: c,
+	}
+}
+
+func (cp *clusterProxy) MemberAdd(ctx context.Context, r *pb.MemberAddRequest) (*pb.MemberAddResponse, error) {
+	conn := cp.client.ActiveConnection()
+	return pb.NewClusterClient(conn).MemberAdd(ctx, r)
+}
+
+func (cp *clusterProxy) MemberRemove(ctx context.Context, r *pb.MemberRemoveRequest) (*pb.MemberRemoveResponse, error) {
+	conn := cp.client.ActiveConnection()
+	return pb.NewClusterClient(conn).MemberRemove(ctx, r)
+}
+
+func (cp *clusterProxy) MemberUpdate(ctx context.Context, r *pb.MemberUpdateRequest) (*pb.MemberUpdateResponse, error) {
+	conn := cp.client.ActiveConnection()
+	return pb.NewClusterClient(conn).MemberUpdate(ctx, r)
+}
+
+func (cp *clusterProxy) MemberList(ctx context.Context, r *pb.MemberListRequest) (*pb.MemberListResponse, error) {
+	conn := cp.client.ActiveConnection()
+	return pb.NewClusterClient(conn).MemberList(ctx, r)
+}