go.etcd.io/etcd@v3.3.27+incompatible/proxy/grpcproxy/register_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 "testing" 19 "time" 20 21 "github.com/coreos/etcd/clientv3" 22 "github.com/coreos/etcd/clientv3/naming" 23 "github.com/coreos/etcd/integration" 24 "github.com/coreos/etcd/pkg/testutil" 25 26 gnaming "google.golang.org/grpc/naming" 27 ) 28 29 func TestRegister(t *testing.T) { 30 defer testutil.AfterTest(t) 31 32 clus := integration.NewClusterV3(t, &integration.ClusterConfig{Size: 1}) 33 defer clus.Terminate(t) 34 cli := clus.Client(0) 35 paddr := clus.Members[0].GRPCAddr() 36 37 testPrefix := "test-name" 38 wa := createWatcher(t, cli, testPrefix) 39 ups, err := wa.Next() 40 if err != nil { 41 t.Fatal(err) 42 } 43 if len(ups) != 0 { 44 t.Fatalf("len(ups) expected 0, got %d (%v)", len(ups), ups) 45 } 46 47 donec := Register(cli, testPrefix, paddr, 5) 48 49 ups, err = wa.Next() 50 if err != nil { 51 t.Fatal(err) 52 } 53 if len(ups) != 1 { 54 t.Fatalf("len(ups) expected 1, got %d (%v)", len(ups), ups) 55 } 56 if ups[0].Addr != paddr { 57 t.Fatalf("ups[0].Addr expected %q, got %q", paddr, ups[0].Addr) 58 } 59 60 cli.Close() 61 clus.TakeClient(0) 62 select { 63 case <-donec: 64 case <-time.After(5 * time.Second): 65 t.Fatal("donec 'register' did not return in time") 66 } 67 } 68 69 func createWatcher(t *testing.T, c *clientv3.Client, prefix string) gnaming.Watcher { 70 gr := &naming.GRPCResolver{Client: c} 71 watcher, err := gr.Resolve(prefix) 72 if err != nil { 73 t.Fatalf("failed to resolve %q (%v)", prefix, err) 74 } 75 return watcher 76 }