diff --git a/clientv3/integration/dial_test.go b/clientv3/integration/dial_test.go new file mode 100644 index 000000000..9d9e6b47f --- /dev/null +++ b/clientv3/integration/dial_test.go @@ -0,0 +1,60 @@ +// Copyright 2016 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 integration + +import ( + "math/rand" + "testing" + "time" + + "github.com/coreos/etcd/clientv3" + "github.com/coreos/etcd/integration" + "github.com/coreos/etcd/pkg/testutil" + "golang.org/x/net/context" +) + +// TestDialSetEndpoints ensures SetEndpoints can replace unavailable endpoints with available ones. +func TestDialSetEndpoints(t *testing.T) { + defer testutil.AfterTest(t) + clus := integration.NewClusterV3(t, &integration.ClusterConfig{Size: 3}) + defer clus.Terminate(t) + + // get endpoint list + eps := make([]string, 3) + for i := range eps { + eps[i] = clus.Members[i].GRPCAddr() + } + toKill := rand.Intn(len(eps)) + + cfg := clientv3.Config{Endpoints: []string{eps[toKill]}, DialTimeout: 1 * time.Second} + cli, err := clientv3.New(cfg) + if err != nil { + t.Fatal(err) + } + defer cli.Close() + + // make a dead node + clus.Members[toKill].Stop(t) + clus.WaitLeader(t) + + // update client with available endpoints + cli.SetEndpoints(eps[(toKill+1)%3]) + + ctx, cancel := context.WithTimeout(context.Background(), 3*time.Second) + if _, err = cli.Get(ctx, "foo", clientv3.WithSerializable()); err != nil { + t.Fatal(err) + } + cancel() +}