github.com/lfch/etcd-io/tests/v3@v3.0.0-20221004140520-eac99acd3e9d/integration/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  	pb "github.com/lfch/etcd-io/api/v3/etcdserverpb"
    24  	"github.com/lfch/etcd-io/client/v3"
    25  	"github.com/lfch/etcd-io/server/v3/proxy/grpcproxy"
    26  	integration2 "github.com/lfch/etcd-io/tests/v3/framework/integration"
    27  	"go.uber.org/zap/zaptest"
    28  
    29  	"go.uber.org/zap"
    30  	"google.golang.org/grpc"
    31  )
    32  
    33  func TestClusterProxyMemberList(t *testing.T) {
    34  	integration2.BeforeTest(t)
    35  
    36  	clus := integration2.NewCluster(t, &integration2.ClusterConfig{Size: 1})
    37  	defer clus.Terminate(t)
    38  
    39  	cts := newClusterProxyServer(zaptest.NewLogger(t), []string{clus.Members[0].GRPCURL()}, t)
    40  	defer cts.close(t)
    41  
    42  	cfg := clientv3.Config{
    43  		Endpoints:   []string{cts.caddr},
    44  		DialTimeout: 5 * time.Second,
    45  	}
    46  	client, err := integration2.NewClient(t, cfg)
    47  	if err != nil {
    48  		t.Fatalf("err %v, want nil", err)
    49  	}
    50  	defer client.Close()
    51  
    52  	// wait some time for register-loop to write keys
    53  	time.Sleep(time.Second)
    54  
    55  	var mresp *clientv3.MemberListResponse
    56  	mresp, err = client.Cluster.MemberList(context.Background())
    57  	if err != nil {
    58  		t.Fatalf("err %v, want nil", err)
    59  	}
    60  
    61  	if len(mresp.Members) != 1 {
    62  		t.Fatalf("len(mresp.Members) expected 1, got %d (%+v)", len(mresp.Members), mresp.Members)
    63  	}
    64  	if len(mresp.Members[0].ClientURLs) != 1 {
    65  		t.Fatalf("len(mresp.Members[0].ClientURLs) expected 1, got %d (%+v)", len(mresp.Members[0].ClientURLs), mresp.Members[0].ClientURLs[0])
    66  	}
    67  	if mresp.Members[0].ClientURLs[0] != cts.caddr {
    68  		t.Fatalf("mresp.Members[0].ClientURLs[0] expected %q, got %q", cts.caddr, mresp.Members[0].ClientURLs[0])
    69  	}
    70  }
    71  
    72  type clusterproxyTestServer struct {
    73  	cp     pb.ClusterServer
    74  	c      *clientv3.Client
    75  	server *grpc.Server
    76  	l      net.Listener
    77  	donec  <-chan struct{}
    78  	caddr  string
    79  }
    80  
    81  func (cts *clusterproxyTestServer) close(t *testing.T) {
    82  	cts.server.Stop()
    83  	cts.l.Close()
    84  	cts.c.Close()
    85  	select {
    86  	case <-cts.donec:
    87  		return
    88  	case <-time.After(5 * time.Second):
    89  		t.Fatalf("register-loop took too long to return")
    90  	}
    91  }
    92  
    93  func newClusterProxyServer(lg *zap.Logger, endpoints []string, t *testing.T) *clusterproxyTestServer {
    94  	cfg := clientv3.Config{
    95  		Endpoints:   endpoints,
    96  		DialTimeout: 5 * time.Second,
    97  	}
    98  	client, err := integration2.NewClient(t, cfg)
    99  	if err != nil {
   100  		t.Fatal(err)
   101  	}
   102  
   103  	cts := &clusterproxyTestServer{
   104  		c: client,
   105  	}
   106  	cts.l, err = net.Listen("tcp", "127.0.0.1:0")
   107  	if err != nil {
   108  		t.Fatal(err)
   109  	}
   110  	var opts []grpc.ServerOption
   111  	cts.server = grpc.NewServer(opts...)
   112  	servec := make(chan struct{})
   113  	go func() {
   114  		<-servec
   115  		cts.server.Serve(cts.l)
   116  	}()
   117  
   118  	grpcproxy.Register(lg, client, "test-prefix", cts.l.Addr().String(), 7)
   119  	cts.cp, cts.donec = grpcproxy.NewClusterProxy(lg, client, cts.l.Addr().String(), "test-prefix")
   120  	cts.caddr = cts.l.Addr().String()
   121  	pb.RegisterClusterServer(cts.server, cts.cp)
   122  	close(servec)
   123  
   124  	// wait some time for free port 0 to be resolved
   125  	time.Sleep(500 * time.Millisecond)
   126  
   127  	return cts
   128  }