mirror of
https://github.com/etcd-io/etcd.git
synced 2024-09-27 06:25:44 +00:00
93 lines
2.6 KiB
Go
93 lines
2.6 KiB
Go
// Copyright 2017 The etcd Authors
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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// +build !cluster_proxy
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package integration
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import (
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"context"
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"testing"
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"time"
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"github.com/coreos/etcd/clientv3"
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"github.com/coreos/etcd/integration"
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"github.com/coreos/etcd/pkg/testutil"
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)
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// TestWatchKeepAlive tests when watch discovers it cannot talk to
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// blackholed endpoint, client balancer switches to healthy one.
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// TODO: test server-to-client keepalive ping
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func TestWatchKeepAlive(t *testing.T) {
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defer testutil.AfterTest(t)
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clus := integration.NewClusterV3(t, &integration.ClusterConfig{
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Size: 3,
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GRPCKeepAliveMinTime: time.Millisecond, // avoid too_many_pings
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})
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defer clus.Terminate(t)
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ccfg := clientv3.Config{
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Endpoints: []string{clus.Members[0].GRPCAddr()},
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DialTimeout: 3 * time.Second,
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DialKeepAliveTime: 2 * time.Second,
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DialKeepAliveTimeout: 2 * time.Second,
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}
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cli, err := clientv3.New(ccfg)
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if err != nil {
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t.Fatal(err)
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}
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defer cli.Close()
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wch := cli.Watch(context.Background(), "foo", clientv3.WithCreatedNotify())
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if _, ok := <-wch; !ok {
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t.Fatalf("watch failed on creation")
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}
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clus.Members[0].Blackhole()
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// expects endpoint switch to ep[1]
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cli.SetEndpoints(clus.Members[0].GRPCAddr(), clus.Members[1].GRPCAddr())
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// ep[0] keepalive time-out after DialKeepAliveTime + DialKeepAliveTimeout
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// wait extra for processing network error for endpoint switching
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timeout := ccfg.DialKeepAliveTime + ccfg.DialKeepAliveTimeout + ccfg.DialTimeout
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time.Sleep(timeout)
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if _, err = clus.Client(1).Put(context.TODO(), "foo", "bar"); err != nil {
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t.Fatal(err)
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}
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select {
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case <-wch:
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case <-time.After(5 * time.Second):
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t.Fatal("took too long to receive events")
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}
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clus.Members[0].Unblackhole()
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clus.Members[1].Blackhole()
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defer clus.Members[1].Unblackhole()
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// wait for ep[0] recover, ep[1] fail
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time.Sleep(timeout)
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if _, err = clus.Client(0).Put(context.TODO(), "foo", "bar"); err != nil {
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t.Fatal(err)
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}
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select {
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case <-wch:
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case <-time.After(5 * time.Second):
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t.Fatal("took too long to receive events")
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}
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}
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