| /** |
| * 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.recipes.barriers; |
| |
| import com.google.common.collect.Lists; |
| import org.apache.curator.test.BaseClassForTests; |
| import org.apache.curator.utils.CloseableUtils; |
| import org.apache.curator.framework.CuratorFramework; |
| import org.apache.curator.framework.CuratorFrameworkFactory; |
| import org.apache.curator.retry.RetryOneTime; |
| import org.apache.zookeeper.KeeperException; |
| import org.testng.Assert; |
| import org.testng.annotations.Test; |
| import java.util.List; |
| import java.util.concurrent.Callable; |
| import java.util.concurrent.ExecutorService; |
| import java.util.concurrent.Executors; |
| import java.util.concurrent.Future; |
| import java.util.concurrent.TimeUnit; |
| |
| public class TestDistributedBarrier extends BaseClassForTests |
| { |
| @Test |
| public void testServerCrash() throws Exception |
| { |
| final int TIMEOUT = 1000; |
| |
| final CuratorFramework client = CuratorFrameworkFactory.builder().connectString(server.getConnectString()).connectionTimeoutMs(TIMEOUT).retryPolicy(new RetryOneTime(1)).build(); |
| try |
| { |
| client.start(); |
| |
| final DistributedBarrier barrier = new DistributedBarrier(client, "/barrier"); |
| barrier.setBarrier(); |
| |
| final ExecutorService service = Executors.newSingleThreadExecutor(); |
| Future<Object> future = service.submit |
| ( |
| new Callable<Object>() |
| { |
| @Override |
| public Object call() throws Exception |
| { |
| Thread.sleep(TIMEOUT / 2); |
| server.stop(); |
| return null; |
| } |
| } |
| ); |
| |
| barrier.waitOnBarrier(TIMEOUT * 2, TimeUnit.SECONDS); |
| future.get(); |
| Assert.fail(); |
| } |
| catch ( KeeperException.ConnectionLossException expected ) |
| { |
| // expected |
| } |
| finally |
| { |
| client.close(); |
| } |
| } |
| |
| @Test |
| public void testMultiClient() throws Exception |
| { |
| CuratorFramework client1 = null; |
| CuratorFramework client2 = null; |
| try |
| { |
| { |
| CuratorFramework client = CuratorFrameworkFactory.newClient(server.getConnectString(), new RetryOneTime(1)); |
| try |
| { |
| client.start(); |
| DistributedBarrier barrier = new DistributedBarrier(client, "/barrier"); |
| barrier.setBarrier(); |
| } |
| finally |
| { |
| CloseableUtils.closeQuietly(client); |
| } |
| } |
| |
| client1 = CuratorFrameworkFactory.newClient(server.getConnectString(), new RetryOneTime(1)); |
| client2 = CuratorFrameworkFactory.newClient(server.getConnectString(), new RetryOneTime(1)); |
| |
| List<Future<Object>> futures = Lists.newArrayList(); |
| ExecutorService service = Executors.newCachedThreadPool(); |
| for ( final CuratorFramework c : new CuratorFramework[]{client1, client2} ) |
| { |
| Future<Object> future = service.submit |
| ( |
| new Callable<Object>() |
| { |
| @Override |
| public Object call() throws Exception |
| { |
| c.start(); |
| DistributedBarrier barrier = new DistributedBarrier(c, "/barrier"); |
| barrier.waitOnBarrier(10, TimeUnit.MILLISECONDS); |
| return null; |
| } |
| } |
| ); |
| futures.add(future); |
| } |
| |
| Thread.sleep(1000); |
| { |
| CuratorFramework client = CuratorFrameworkFactory.newClient(server.getConnectString(), new RetryOneTime(1)); |
| try |
| { |
| client.start(); |
| DistributedBarrier barrier = new DistributedBarrier(client, "/barrier"); |
| barrier.removeBarrier(); |
| } |
| finally |
| { |
| CloseableUtils.closeQuietly(client); |
| } |
| } |
| |
| for ( Future<Object> f : futures ) |
| { |
| f.get(); |
| } |
| } |
| finally |
| { |
| CloseableUtils.closeQuietly(client1); |
| CloseableUtils.closeQuietly(client2); |
| } |
| } |
| |
| @Test |
| public void testNoBarrier() throws Exception |
| { |
| CuratorFramework client = CuratorFrameworkFactory.newClient(server.getConnectString(), new RetryOneTime(1)); |
| try |
| { |
| client.start(); |
| |
| final DistributedBarrier barrier = new DistributedBarrier(client, "/barrier"); |
| Assert.assertTrue(barrier.waitOnBarrier(10, TimeUnit.SECONDS)); |
| |
| // just for grins, test the infinite wait |
| ExecutorService service = Executors.newSingleThreadExecutor(); |
| Future<Object> future = service.submit |
| ( |
| new Callable<Object>() |
| { |
| @Override |
| public Object call() throws Exception |
| { |
| barrier.waitOnBarrier(); |
| return ""; |
| } |
| } |
| ); |
| Assert.assertTrue(future.get(10, TimeUnit.SECONDS) != null); |
| } |
| finally |
| { |
| client.close(); |
| } |
| } |
| |
| @Test |
| public void testBasic() throws Exception |
| { |
| CuratorFramework client = CuratorFrameworkFactory.newClient(server.getConnectString(), new RetryOneTime(1)); |
| try |
| { |
| client.start(); |
| |
| final DistributedBarrier barrier = new DistributedBarrier(client, "/barrier"); |
| barrier.setBarrier(); |
| |
| ExecutorService service = Executors.newSingleThreadExecutor(); |
| service.submit |
| ( |
| new Callable<Object>() |
| { |
| @Override |
| public Object call() throws Exception |
| { |
| Thread.sleep(1000); |
| barrier.removeBarrier(); |
| return null; |
| } |
| } |
| ); |
| |
| Assert.assertTrue(barrier.waitOnBarrier(10, TimeUnit.SECONDS)); |
| } |
| finally |
| { |
| client.close(); |
| } |
| } |
| } |