go.etcd.io/etcd@v3.3.27+incompatible/proxy/grpcproxy/cluster_test.go (about)

     1  // Copyright 2017 The etcd Authors
     2  //
     3  // Licensed under the Apache License, Version 2.0 (the "License");
     4  // you may not use this file except in compliance with the License.
     5  // You may obtain a copy of the License at
     6  //
     7  //     http://www.apache.org/licenses/LICENSE-2.0
     8  //
     9  // Unless required by applicable law or agreed to in writing, software
    10  // distributed under the License is distributed on an "AS IS" BASIS,
    11  // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
    12  // See the License for the specific language governing permissions and
    13  // limitations under the License.
    14  
    15  package grpcproxy
    16  
    17  import (
    18  	"context"
    19  	"net"
    20  	"testing"
    21  	"time"
    22  
    23  	"github.com/coreos/etcd/clientv3"
    24  	pb "github.com/coreos/etcd/etcdserver/etcdserverpb"
    25  	"github.com/coreos/etcd/integration"
    26  	"github.com/coreos/etcd/pkg/testutil"
    27  
    28  	"google.golang.org/grpc"
    29  )
    30  
    31  func TestClusterProxyMemberList(t *testing.T) {
    32  	defer testutil.AfterTest(t)
    33  
    34  	clus := integration.NewClusterV3(t, &integration.ClusterConfig{Size: 1})
    35  	defer clus.Terminate(t)
    36  
    37  	cts := newClusterProxyServer([]string{clus.Members[0].GRPCAddr()}, t)
    38  	defer cts.close(t)
    39  
    40  	cfg := clientv3.Config{
    41  		Endpoints:   []string{cts.caddr},
    42  		DialTimeout: 5 * time.Second,
    43  	}
    44  	client, err := clientv3.New(cfg)
    45  	if err != nil {
    46  		t.Fatalf("err %v, want nil", err)
    47  	}
    48  	defer client.Close()
    49  
    50  	// wait some time for register-loop to write keys
    51  	time.Sleep(time.Second)
    52  
    53  	var mresp *clientv3.MemberListResponse
    54  	mresp, err = client.Cluster.MemberList(context.Background())
    55  	if err != nil {
    56  		t.Fatalf("err %v, want nil", err)
    57  	}
    58  
    59  	if len(mresp.Members) != 1 {
    60  		t.Fatalf("len(mresp.Members) expected 1, got %d (%+v)", len(mresp.Members), mresp.Members)
    61  	}
    62  	if len(mresp.Members[0].ClientURLs) != 1 {
    63  		t.Fatalf("len(mresp.Members[0].ClientURLs) expected 1, got %d (%+v)", len(mresp.Members[0].ClientURLs), mresp.Members[0].ClientURLs[0])
    64  	}
    65  	if mresp.Members[0].ClientURLs[0] != cts.caddr {
    66  		t.Fatalf("mresp.Members[0].ClientURLs[0] expected %q, got %q", cts.caddr, mresp.Members[0].ClientURLs[0])
    67  	}
    68  }
    69  
    70  type clusterproxyTestServer struct {
    71  	cp     pb.ClusterServer
    72  	c      *clientv3.Client
    73  	server *grpc.Server
    74  	l      net.Listener
    75  	donec  <-chan struct{}
    76  	caddr  string
    77  }
    78  
    79  func (cts *clusterproxyTestServer) close(t *testing.T) {
    80  	cts.server.Stop()
    81  	cts.l.Close()
    82  	cts.c.Close()
    83  	select {
    84  	case <-cts.donec:
    85  		return
    86  	case <-time.After(5 * time.Second):
    87  		t.Fatalf("register-loop took too long to return")
    88  	}
    89  }
    90  
    91  func newClusterProxyServer(endpoints []string, t *testing.T) *clusterproxyTestServer {
    92  	cfg := clientv3.Config{
    93  		Endpoints:   endpoints,
    94  		DialTimeout: 5 * time.Second,
    95  	}
    96  	client, err := clientv3.New(cfg)
    97  	if err != nil {
    98  		t.Fatal(err)
    99  	}
   100  
   101  	cts := &clusterproxyTestServer{
   102  		c: client,
   103  	}
   104  	cts.l, err = net.Listen("tcp", "127.0.0.1:0")
   105  	if err != nil {
   106  		t.Fatal(err)
   107  	}
   108  	var opts []grpc.ServerOption
   109  	cts.server = grpc.NewServer(opts...)
   110  	servec := make(chan struct{})
   111  	go func() {
   112  		<-servec
   113  		cts.server.Serve(cts.l)
   114  	}()
   115  
   116  	Register(client, "test-prefix", cts.l.Addr().String(), 7)
   117  	cts.cp, cts.donec = NewClusterProxy(client, cts.l.Addr().String(), "test-prefix")
   118  	cts.caddr = cts.l.Addr().String()
   119  	pb.RegisterClusterServer(cts.server, cts.cp)
   120  	close(servec)
   121  
   122  	// wait some time for free port 0 to be resolved
   123  	time.Sleep(500 * time.Millisecond)
   124  
   125  	return cts
   126  }