From 763a37d3f1b0e31348d5b58494f0a36a1796f136 Mon Sep 17 00:00:00 2001
From: Anthony Romano <anthony.romano@coreos.com>
Date: Mon, 6 Mar 2017 23:25:11 -0800
Subject: [PATCH] v3client: a bridge between an etcdserver and a clientv3

---
 etcdserver/api/v3client/doc.go      | 16 ++++++++++++
 etcdserver/api/v3client/v3client.go | 40 +++++++++++++++++++++++++++++
 2 files changed, 56 insertions(+)
 create mode 100644 etcdserver/api/v3client/doc.go
 create mode 100644 etcdserver/api/v3client/v3client.go

diff --git a/etcdserver/api/v3client/doc.go b/etcdserver/api/v3client/doc.go
new file mode 100644
index 000000000..8a8e15515
--- /dev/null
+++ b/etcdserver/api/v3client/doc.go
@@ -0,0 +1,16 @@
+// Copyright 2017 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 v3client provides clientv3 interfaces from an etcdserver.
+package v3client
diff --git a/etcdserver/api/v3client/v3client.go b/etcdserver/api/v3client/v3client.go
new file mode 100644
index 000000000..59d3e4a8d
--- /dev/null
+++ b/etcdserver/api/v3client/v3client.go
@@ -0,0 +1,40 @@
+// Copyright 2017 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 v3client
+
+import (
+	"context"
+	"time"
+
+	"github.com/coreos/etcd/clientv3"
+	"github.com/coreos/etcd/etcdserver"
+	"github.com/coreos/etcd/etcdserver/api/v3rpc"
+	"github.com/coreos/etcd/proxy/grpcproxy/adapter"
+)
+
+func New(s *etcdserver.EtcdServer) *clientv3.Client {
+	c := clientv3.NewCtxClient(context.Background())
+
+	kvc := adapter.KvServerToKvClient(v3rpc.NewQuotaKVServer(s))
+	c.KV = clientv3.NewKVFromKVClient(kvc)
+
+	lc := adapter.LeaseServerToLeaseClient(v3rpc.NewQuotaLeaseServer(s))
+	c.Lease = clientv3.NewLeaseFromLeaseClient(lc, time.Second)
+
+	wc := adapter.WatchServerToWatchClient(v3rpc.NewWatchServer(s))
+	c.Watcher = clientv3.NewWatchFromWatchClient(wc)
+
+	return c
+}