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// 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 grpcproxy
import (
"context"
"net"
"os"
"testing"
"time"
pb "go.etcd.io/etcd/api/v3/etcdserverpb"
clientv3 "go.etcd.io/etcd/client/v3"
"go.etcd.io/etcd/client/v3/naming/endpoints"
"go.etcd.io/etcd/server/v3/proxy/grpcproxy"
"go.etcd.io/etcd/tests/v3/integration"
"go.uber.org/zap/zaptest"
"github.com/stretchr/testify/assert"
"go.uber.org/zap"
"google.golang.org/grpc"
)
func TestClusterProxyMemberList(t *testing.T) {
integration.BeforeTest(t)
clus := integration.NewClusterV3(t, &integration.ClusterConfig{Size: 1})
defer clus.Terminate(t)
lg := zaptest.NewLogger(t)
serverEps := []string{clus.Members[0].GRPCURL()}
prefix := "test-prefix"
hostname, _ := os.Hostname()
cts := newClusterProxyServer(lg, serverEps, prefix, t)
defer cts.close(t)
cfg := clientv3.Config{
Endpoints: []string{cts.caddr},
DialTimeout: 5 * time.Second,
}
client, err := integration.NewClient(t, cfg)
if err != nil {
t.Fatalf("err %v, want nil", err)
}
defer client.Close()
// wait some time for register-loop to write keys
time.Sleep(200 * time.Millisecond)
var mresp *clientv3.MemberListResponse
mresp, err = client.Cluster.MemberList(context.Background())
if err != nil {
t.Fatalf("err %v, want nil", err)
}
if len(mresp.Members) != 1 {
t.Fatalf("len(mresp.Members) expected 1, got %d (%+v)", len(mresp.Members), mresp.Members)
}
if len(mresp.Members[0].ClientURLs) != 1 {
t.Fatalf("len(mresp.Members[0].ClientURLs) expected 1, got %d (%+v)", len(mresp.Members[0].ClientURLs), mresp.Members[0].ClientURLs[0])
}
assert.Contains(t, mresp.Members, &pb.Member{Name: hostname, ClientURLs: []string{cts.caddr}})
//test proxy member add
newMemberAddr := "127.0.0.2:6789"
grpcproxy.Register(lg, cts.c, prefix, newMemberAddr, 7)
// wait some time for proxy update members
time.Sleep(200 * time.Millisecond)
//check add member succ
mresp, err = client.Cluster.MemberList(context.Background())
if err != nil {
t.Fatalf("err %v, want nil", err)
}
if len(mresp.Members) != 2 {
t.Fatalf("len(mresp.Members) expected 2, got %d (%+v)", len(mresp.Members), mresp.Members)
}
assert.Contains(t, mresp.Members, &pb.Member{Name: hostname, ClientURLs: []string{newMemberAddr}})
//test proxy member delete
deregisterMember(cts.c, prefix, newMemberAddr, t)
// wait some time for proxy update members
time.Sleep(200 * time.Millisecond)
//check delete member succ
mresp, err = client.Cluster.MemberList(context.Background())
if err != nil {
t.Fatalf("err %v, want nil", err)
}
if len(mresp.Members) != 1 {
t.Fatalf("len(mresp.Members) expected 1, got %d (%+v)", len(mresp.Members), mresp.Members)
}
assert.Contains(t, mresp.Members, &pb.Member{Name: hostname, ClientURLs: []string{cts.caddr}})
}
type clusterproxyTestServer struct {
cp pb.ClusterServer
c *clientv3.Client
server *grpc.Server
l net.Listener
donec <-chan struct{}
caddr string
}
func (cts *clusterproxyTestServer) close(t *testing.T) {
cts.server.Stop()
cts.l.Close()
cts.c.Close()
select {
case <-cts.donec:
return
case <-time.After(5 * time.Second):
t.Fatalf("register-loop took too long to return")
}
}
func newClusterProxyServer(lg *zap.Logger, endpoints []string, prefix string, t *testing.T) *clusterproxyTestServer {
cfg := clientv3.Config{
Endpoints: endpoints,
DialTimeout: 5 * time.Second,
}
client, err := integration.NewClient(t, cfg)
if err != nil {
t.Fatal(err)
}
cts := &clusterproxyTestServer{
c: client,
}
cts.l, err = net.Listen("tcp", "127.0.0.1:0")
if err != nil {
t.Fatal(err)
}
var opts []grpc.ServerOption
cts.server = grpc.NewServer(opts...)
servec := make(chan struct{})
go func() {
<-servec
cts.server.Serve(cts.l)
}()
grpcproxy.Register(lg, client, prefix, cts.l.Addr().String(), 7)
cts.cp, cts.donec = grpcproxy.NewClusterProxy(lg, client, cts.l.Addr().String(), prefix)
cts.caddr = cts.l.Addr().String()
pb.RegisterClusterServer(cts.server, cts.cp)
close(servec)
// wait some time for free port 0 to be resolved
time.Sleep(500 * time.Millisecond)
return cts
}
func deregisterMember(c *clientv3.Client, prefix, addr string, t *testing.T) {
em, err := endpoints.NewManager(c, prefix)
if err != nil {
t.Fatalf("new endpoint manager failed, err %v", err)
}
if err = em.DeleteEndpoint(c.Ctx(), prefix+"/"+addr); err != nil {
t.Fatalf("delete endpoint failed, err %v", err)
}
}
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