146 lines
3.4 KiB
Go
146 lines
3.4 KiB
Go
// Copyright 2016 CoreOS, Inc.
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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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package integration
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import (
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"testing"
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"time"
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"github.com/coreos/etcd/clientv3/concurrency"
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"github.com/coreos/etcd/contrib/recipes"
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)
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func TestDoubleBarrier(t *testing.T) {
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clus := NewClusterV3(t, &ClusterConfig{Size: 3})
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defer clus.Terminate(t)
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defer dropSessionLease(clus)
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waiters := 10
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b := recipe.NewDoubleBarrier(clus.RandClient(), "test-barrier", waiters)
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donec := make(chan struct{})
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for i := 0; i < waiters-1; i++ {
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go func() {
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bb := recipe.NewDoubleBarrier(clus.RandClient(), "test-barrier", waiters)
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if err := bb.Enter(); err != nil {
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t.Fatalf("could not enter on barrier (%v)", err)
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}
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donec <- struct{}{}
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if err := bb.Leave(); err != nil {
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t.Fatalf("could not leave on barrier (%v)", err)
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}
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donec <- struct{}{}
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}()
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}
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time.Sleep(10 * time.Millisecond)
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select {
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case <-donec:
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t.Fatalf("barrier did not enter-wait")
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default:
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}
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if err := b.Enter(); err != nil {
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t.Fatalf("could not enter last barrier (%v)", err)
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}
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timerC := time.After(time.Duration(waiters*100) * time.Millisecond)
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for i := 0; i < waiters-1; i++ {
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select {
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case <-timerC:
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t.Fatalf("barrier enter timed out")
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case <-donec:
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}
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}
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time.Sleep(10 * time.Millisecond)
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select {
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case <-donec:
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t.Fatalf("barrier did not leave-wait")
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default:
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}
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b.Leave()
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timerC = time.After(time.Duration(waiters*100) * time.Millisecond)
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for i := 0; i < waiters-1; i++ {
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select {
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case <-timerC:
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t.Fatalf("barrier leave timed out")
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case <-donec:
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}
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}
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}
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func TestDoubleBarrierFailover(t *testing.T) {
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clus := NewClusterV3(t, &ClusterConfig{Size: 3})
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defer clus.Terminate(t)
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defer dropSessionLease(clus)
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waiters := 10
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donec := make(chan struct{})
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// sacrificial barrier holder; lease will be revoked
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go func() {
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b := recipe.NewDoubleBarrier(clus.clients[0], "test-barrier", waiters)
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if err := b.Enter(); err != nil {
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t.Fatalf("could not enter on barrier (%v)", err)
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}
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donec <- struct{}{}
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}()
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for i := 0; i < waiters-1; i++ {
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go func() {
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b := recipe.NewDoubleBarrier(clus.clients[1], "test-barrier", waiters)
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if err := b.Enter(); err != nil {
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t.Fatalf("could not enter on barrier (%v)", err)
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}
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donec <- struct{}{}
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b.Leave()
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donec <- struct{}{}
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}()
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}
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// wait for barrier enter to unblock
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for i := 0; i < waiters; i++ {
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select {
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case <-donec:
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case <-time.After(10 * time.Second):
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t.Fatalf("timed out waiting for enter, %d", i)
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}
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}
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// kill lease, expect Leave unblock
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s, err := concurrency.NewSession(clus.clients[0])
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if err != nil {
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t.Fatal(err)
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}
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if err = s.Close(); err != nil {
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t.Fatal(err)
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}
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// join on rest of waiters
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for i := 0; i < waiters-1; i++ {
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select {
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case <-donec:
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case <-time.After(10 * time.Second):
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t.Fatalf("timed out waiting for leave, %d", i)
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}
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}
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}
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func dropSessionLease(clus *ClusterV3) {
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for _, client := range clus.clients {
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s, _ := concurrency.NewSession(client)
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s.Orphan()
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}
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}
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