| /** |
| * Licensed to the Apache Software Foundation (ASF) under one |
| * or more contributor license agreements. See the NOTICE file |
| * distributed with this work for additional information |
| * regarding copyright ownership. The ASF licenses this file |
| * to you 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 org.apache.curator.framework.imps; |
| |
| import org.apache.curator.test.compatibility.CuratorTestBase; |
| import org.apache.curator.utils.CloseableUtils; |
| import org.apache.curator.framework.CuratorFramework; |
| import org.apache.curator.framework.CuratorFrameworkFactory; |
| import org.apache.curator.framework.state.ConnectionState; |
| import org.apache.curator.framework.state.ConnectionStateListener; |
| import org.apache.curator.retry.ExponentialBackoffRetry; |
| import org.apache.curator.retry.RetryOneTime; |
| import org.apache.curator.test.InstanceSpec; |
| import org.apache.curator.test.TestingCluster; |
| import org.apache.curator.test.Timing; |
| import org.apache.zookeeper.CreateMode; |
| import org.testng.Assert; |
| import org.testng.annotations.Test; |
| import java.util.concurrent.CountDownLatch; |
| |
| public class TestWithCluster extends CuratorTestBase |
| { |
| @Test |
| public void testSessionSurvives() throws Exception |
| { |
| Timing timing = new Timing(); |
| |
| CuratorFramework client = null; |
| TestingCluster cluster = createAndStartCluster(3); |
| try |
| { |
| client = CuratorFrameworkFactory.newClient(cluster.getConnectString(), timing.session(), timing.connection(), new ExponentialBackoffRetry(100, 3)); |
| client.start(); |
| |
| final CountDownLatch reconnectedLatch = new CountDownLatch(1); |
| ConnectionStateListener listener = new ConnectionStateListener() |
| { |
| @Override |
| public void stateChanged(CuratorFramework client, ConnectionState newState) |
| { |
| if ( newState == ConnectionState.RECONNECTED ) |
| { |
| reconnectedLatch.countDown();; |
| } |
| } |
| }; |
| client.getConnectionStateListenable().addListener(listener); |
| |
| client.create().withMode(CreateMode.EPHEMERAL).forPath("/temp", "value".getBytes()); |
| Assert.assertNotNull(client.checkExists().forPath("/temp")); |
| |
| for ( InstanceSpec spec : cluster.getInstances() ) |
| { |
| cluster.killServer(spec); |
| timing.sleepABit(); |
| cluster.restartServer(spec); |
| timing.sleepABit(); |
| } |
| |
| Assert.assertTrue(timing.awaitLatch(reconnectedLatch)); |
| Assert.assertNotNull(client.checkExists().forPath("/temp")); |
| } |
| finally |
| { |
| CloseableUtils.closeQuietly(client); |
| CloseableUtils.closeQuietly(cluster); |
| } |
| } |
| |
| @Test |
| public void testSplitBrain() throws Exception |
| { |
| Timing timing = new Timing(); |
| |
| CuratorFramework client = null; |
| TestingCluster cluster = createAndStartCluster(3); |
| try |
| { |
| // make sure all instances are up |
| for ( InstanceSpec instanceSpec : cluster.getInstances() ) |
| { |
| client = CuratorFrameworkFactory.newClient(instanceSpec.getConnectString(), new RetryOneTime(1)); |
| client.start(); |
| client.checkExists().forPath("/"); |
| client.close(); |
| client = null; |
| } |
| |
| client = CuratorFrameworkFactory.newClient(cluster.getConnectString(), timing.session(), timing.connection(), new RetryOneTime(1)); |
| client.start(); |
| |
| final CountDownLatch latch = new CountDownLatch(2); |
| client.getConnectionStateListenable().addListener |
| ( |
| new ConnectionStateListener() |
| { |
| @Override |
| public void stateChanged(CuratorFramework client, ConnectionState newState) |
| { |
| if ( (newState == ConnectionState.SUSPENDED) || (newState == ConnectionState.LOST) ) |
| { |
| latch.countDown(); |
| } |
| } |
| } |
| ); |
| |
| client.checkExists().forPath("/"); |
| |
| for ( InstanceSpec instanceSpec : cluster.getInstances() ) |
| { |
| if ( !instanceSpec.equals(cluster.findConnectionInstance(client.getZookeeperClient().getZooKeeper())) ) |
| { |
| Assert.assertTrue(cluster.killServer(instanceSpec)); |
| } |
| } |
| |
| Assert.assertTrue(timing.awaitLatch(latch)); |
| } |
| finally |
| { |
| CloseableUtils.closeQuietly(client); |
| CloseableUtils.closeQuietly(cluster); |
| } |
| } |
| |
| @Override |
| protected void createServer() throws Exception |
| { |
| // NOP |
| } |
| } |