| /** |
| * 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.framework.CuratorFramework; |
| import org.apache.curator.framework.CuratorFrameworkFactory; |
| import org.apache.curator.framework.WatcherRemoveCuratorFramework; |
| import org.apache.curator.framework.api.BackgroundCallback; |
| import org.apache.curator.framework.api.CuratorEvent; |
| import org.apache.curator.retry.RetryOneTime; |
| import org.apache.curator.test.compatibility.CuratorTestBase; |
| import org.apache.curator.test.Timing; |
| import org.apache.curator.test.WatchersDebug; |
| import org.apache.zookeeper.KeeperException; |
| import org.apache.zookeeper.WatchedEvent; |
| import org.apache.zookeeper.Watcher; |
| import org.testng.Assert; |
| import org.testng.annotations.Test; |
| import java.util.List; |
| import java.util.concurrent.Callable; |
| import java.util.concurrent.CountDownLatch; |
| |
| public class TestWatcherRemovalManager extends CuratorTestBase |
| { |
| @Test |
| public void testSameWatcherDifferentPaths1Triggered() throws Exception |
| { |
| CuratorFramework client = CuratorFrameworkFactory.newClient(server.getConnectString(), new RetryOneTime(1)); |
| try |
| { |
| client.start(); |
| WatcherRemovalFacade removerClient = (WatcherRemovalFacade)client.newWatcherRemoveCuratorFramework(); |
| final CountDownLatch latch = new CountDownLatch(1); |
| Watcher watcher = new Watcher() |
| { |
| @Override |
| public void process(WatchedEvent event) |
| { |
| latch.countDown(); |
| } |
| }; |
| removerClient.checkExists().usingWatcher(watcher).forPath("/a/b/c"); |
| removerClient.checkExists().usingWatcher(watcher).forPath("/d/e/f"); |
| removerClient.create().creatingParentsIfNeeded().forPath("/d/e/f"); |
| |
| Timing timing = new Timing(); |
| Assert.assertTrue(timing.awaitLatch(latch)); |
| timing.sleepABit(); |
| |
| removerClient.removeWatchers(); |
| } |
| finally |
| { |
| TestCleanState.closeAndTestClean(client); |
| } |
| } |
| |
| @Test |
| public void testSameWatcherDifferentPaths() throws Exception |
| { |
| CuratorFramework client = CuratorFrameworkFactory.newClient(server.getConnectString(), new RetryOneTime(1)); |
| try |
| { |
| client.start(); |
| WatcherRemovalFacade removerClient = (WatcherRemovalFacade)client.newWatcherRemoveCuratorFramework(); |
| Watcher watcher = new Watcher() |
| { |
| @Override |
| public void process(WatchedEvent event) |
| { |
| // NOP |
| } |
| }; |
| removerClient.checkExists().usingWatcher(watcher).forPath("/a/b/c"); |
| removerClient.checkExists().usingWatcher(watcher).forPath("/d/e/f"); |
| Assert.assertEquals(removerClient.getWatcherRemovalManager().getEntries().size(), 2); |
| removerClient.removeWatchers(); |
| } |
| finally |
| { |
| TestCleanState.closeAndTestClean(client); |
| } |
| } |
| |
| @Test |
| public void testSameWatcherDifferentKinds1Triggered() throws Exception |
| { |
| CuratorFramework client = CuratorFrameworkFactory.newClient(server.getConnectString(), new RetryOneTime(1)); |
| try |
| { |
| client.start(); |
| WatcherRemovalFacade removerClient = (WatcherRemovalFacade)client.newWatcherRemoveCuratorFramework(); |
| final CountDownLatch latch = new CountDownLatch(1); |
| Watcher watcher = new Watcher() |
| { |
| @Override |
| public void process(WatchedEvent event) |
| { |
| latch.countDown(); |
| } |
| }; |
| |
| removerClient.create().creatingParentsIfNeeded().forPath("/a/b/c"); |
| removerClient.checkExists().usingWatcher(watcher).forPath("/a/b/c"); |
| removerClient.getData().usingWatcher(watcher).forPath("/a/b/c"); |
| removerClient.setData().forPath("/a/b/c", "new".getBytes()); |
| |
| Timing timing = new Timing(); |
| Assert.assertTrue(timing.awaitLatch(latch)); |
| timing.sleepABit(); |
| |
| removerClient.removeWatchers(); |
| } |
| finally |
| { |
| TestCleanState.closeAndTestClean(client); |
| } |
| } |
| |
| @Test |
| public void testSameWatcherDifferentKinds() throws Exception |
| { |
| CuratorFramework client = CuratorFrameworkFactory.newClient(server.getConnectString(), new RetryOneTime(1)); |
| try |
| { |
| client.start(); |
| WatcherRemovalFacade removerClient = (WatcherRemovalFacade)client.newWatcherRemoveCuratorFramework(); |
| Watcher watcher = new Watcher() |
| { |
| @Override |
| public void process(WatchedEvent event) |
| { |
| // NOP |
| } |
| }; |
| |
| removerClient.create().creatingParentsIfNeeded().forPath("/a/b/c"); |
| removerClient.checkExists().usingWatcher(watcher).forPath("/a/b/c"); |
| removerClient.getData().usingWatcher(watcher).forPath("/a/b/c"); |
| removerClient.removeWatchers(); |
| } |
| finally |
| { |
| TestCleanState.closeAndTestClean(client); |
| } |
| } |
| |
| @Test |
| public void testWithRetry() throws Exception |
| { |
| server.stop(); |
| CuratorFramework client = CuratorFrameworkFactory.newClient(server.getConnectString(), new RetryOneTime(1)); |
| try |
| { |
| client.start(); |
| WatcherRemovalFacade removerClient = (WatcherRemovalFacade)client.newWatcherRemoveCuratorFramework(); |
| Watcher w = new Watcher() |
| { |
| @Override |
| public void process(WatchedEvent event) |
| { |
| // NOP |
| } |
| }; |
| try |
| { |
| removerClient.checkExists().usingWatcher(w).forPath("/one/two/three"); |
| Assert.fail("Should have thrown ConnectionLossException"); |
| } |
| catch ( KeeperException.ConnectionLossException expected ) |
| { |
| // expected |
| } |
| Assert.assertEquals(removerClient.getWatcherRemovalManager().getEntries().size(), 0); |
| } |
| finally |
| { |
| TestCleanState.closeAndTestClean(client); |
| } |
| } |
| |
| @Test |
| public void testWithRetryInBackground() throws Exception |
| { |
| server.stop(); |
| CuratorFramework client = CuratorFrameworkFactory.newClient(server.getConnectString(), new RetryOneTime(1)); |
| try |
| { |
| client.start(); |
| WatcherRemovalFacade removerClient = (WatcherRemovalFacade)client.newWatcherRemoveCuratorFramework(); |
| Watcher w = new Watcher() |
| { |
| @Override |
| public void process(WatchedEvent event) |
| { |
| // NOP |
| } |
| }; |
| |
| final CountDownLatch latch = new CountDownLatch(1); |
| BackgroundCallback callback = new BackgroundCallback() |
| { |
| @Override |
| public void processResult(CuratorFramework client, CuratorEvent event) throws Exception |
| { |
| latch.countDown(); |
| } |
| }; |
| removerClient.checkExists().usingWatcher(w).inBackground(callback).forPath("/one/two/three"); |
| Assert.assertTrue(new Timing().awaitLatch(latch)); |
| Assert.assertEquals(removerClient.getWatcherRemovalManager().getEntries().size(), 0); |
| } |
| finally |
| { |
| TestCleanState.closeAndTestClean(client); |
| } |
| } |
| |
| @Test |
| public void testMissingNode() throws Exception |
| { |
| CuratorFramework client = CuratorFrameworkFactory.newClient(server.getConnectString(), new RetryOneTime(1)); |
| try |
| { |
| client.start(); |
| WatcherRemovalFacade removerClient = (WatcherRemovalFacade)client.newWatcherRemoveCuratorFramework(); |
| Watcher w = new Watcher() |
| { |
| @Override |
| public void process(WatchedEvent event) |
| { |
| // NOP |
| } |
| }; |
| try |
| { |
| removerClient.getData().usingWatcher(w).forPath("/one/two/three"); |
| Assert.fail("Should have thrown NoNodeException"); |
| } |
| catch ( KeeperException.NoNodeException expected ) |
| { |
| // expected |
| } |
| removerClient.removeWatchers(); |
| } |
| finally |
| { |
| TestCleanState.closeAndTestClean(client); |
| } |
| } |
| |
| @Test |
| public void testMissingNodeInBackground() throws Exception |
| { |
| final CuratorFramework client = CuratorFrameworkFactory.newClient(server.getConnectString(), new RetryOneTime(1)); |
| Callable<Void> proc = new Callable<Void>() |
| { |
| @Override |
| public Void call() throws Exception |
| { |
| client.start(); |
| WatcherRemovalFacade removerClient = (WatcherRemovalFacade)client.newWatcherRemoveCuratorFramework(); |
| Watcher w = new Watcher() |
| { |
| @Override |
| public void process(WatchedEvent event) |
| { |
| // NOP |
| } |
| }; |
| final CountDownLatch latch = new CountDownLatch(1); |
| BackgroundCallback callback = new BackgroundCallback() |
| { |
| @Override |
| public void processResult(CuratorFramework client, CuratorEvent event) throws Exception |
| { |
| latch.countDown(); |
| } |
| }; |
| removerClient.getData().usingWatcher(w).inBackground(callback).forPath("/one/two/three"); |
| Assert.assertTrue(new Timing().awaitLatch(latch)); |
| Assert.assertEquals(removerClient.getWatcherRemovalManager().getEntries().size(), 0); |
| removerClient.removeWatchers(); |
| return null; |
| } |
| }; |
| TestCleanState.test(client, proc); |
| } |
| |
| @Test |
| public void testBasic() throws Exception |
| { |
| CuratorFramework client = CuratorFrameworkFactory.newClient(server.getConnectString(), new RetryOneTime(1)); |
| try |
| { |
| client.start(); |
| internalTryBasic(client); |
| } |
| finally |
| { |
| TestCleanState.closeAndTestClean(client); |
| } |
| } |
| |
| @Test |
| public void testBasicNamespace1() throws Exception |
| { |
| CuratorFramework client = CuratorFrameworkFactory.newClient(server.getConnectString(), new RetryOneTime(1)); |
| try |
| { |
| client.start(); |
| internalTryBasic(client.usingNamespace("foo")); |
| } |
| finally |
| { |
| TestCleanState.closeAndTestClean(client); |
| } |
| } |
| |
| @Test |
| public void testBasicNamespace2() throws Exception |
| { |
| CuratorFramework client = CuratorFrameworkFactory.builder() |
| .connectString(server.getConnectString()) |
| .retryPolicy(new RetryOneTime(1)) |
| .namespace("hey") |
| .build(); |
| try |
| { |
| client.start(); |
| internalTryBasic(client); |
| } |
| finally |
| { |
| TestCleanState.closeAndTestClean(client); |
| } |
| } |
| |
| @Test |
| public void testBasicNamespace3() throws Exception |
| { |
| CuratorFramework client = CuratorFrameworkFactory.builder() |
| .connectString(server.getConnectString()) |
| .retryPolicy(new RetryOneTime(1)) |
| .namespace("hey") |
| .build(); |
| try |
| { |
| client.start(); |
| internalTryBasic(client.usingNamespace("lakjsf")); |
| } |
| finally |
| { |
| TestCleanState.closeAndTestClean(client); |
| } |
| } |
| |
| @Test |
| public void testSameWatcher() throws Exception |
| { |
| CuratorFramework client = CuratorFrameworkFactory.newClient(server.getConnectString(), new RetryOneTime(1)); |
| try |
| { |
| client.start(); |
| client.create().forPath("/test"); |
| |
| WatcherRemovalFacade removerClient = (WatcherRemovalFacade)client.newWatcherRemoveCuratorFramework(); |
| |
| Watcher watcher = new Watcher() |
| { |
| @Override |
| public void process(WatchedEvent event) |
| { |
| // NOP |
| } |
| }; |
| |
| removerClient.getData().usingWatcher(watcher).forPath("/test"); |
| Assert.assertEquals(removerClient.getRemovalManager().getEntries().size(), 1); |
| removerClient.getData().usingWatcher(watcher).forPath("/test"); |
| Assert.assertEquals(removerClient.getRemovalManager().getEntries().size(), 1); |
| removerClient.removeWatchers(); |
| } |
| finally |
| { |
| TestCleanState.closeAndTestClean(client); |
| } |
| } |
| |
| @Test |
| public void testTriggered() throws Exception |
| { |
| CuratorFramework client = CuratorFrameworkFactory.newClient(server.getConnectString(), new RetryOneTime(1)); |
| try |
| { |
| client.start(); |
| |
| WatcherRemovalFacade removerClient = (WatcherRemovalFacade)client.newWatcherRemoveCuratorFramework(); |
| |
| final CountDownLatch latch = new CountDownLatch(1); |
| Watcher watcher = new Watcher() |
| { |
| @Override |
| public void process(WatchedEvent event) |
| { |
| if ( event.getType() == Event.EventType.NodeCreated ) |
| { |
| latch.countDown(); |
| } |
| } |
| }; |
| |
| removerClient.checkExists().usingWatcher(watcher).forPath("/yo"); |
| Assert.assertEquals(removerClient.getRemovalManager().getEntries().size(), 1); |
| removerClient.create().forPath("/yo"); |
| |
| Assert.assertTrue(new Timing().awaitLatch(latch)); |
| |
| Assert.assertEquals(removerClient.getRemovalManager().getEntries().size(), 0); |
| } |
| finally |
| { |
| TestCleanState.closeAndTestClean(client); |
| } |
| } |
| |
| @Test |
| public void testResetFromWatcher() throws Exception |
| { |
| Timing timing = new Timing(); |
| CuratorFramework client = CuratorFrameworkFactory.newClient(server.getConnectString(), new RetryOneTime(1)); |
| try |
| { |
| client.start(); |
| |
| final WatcherRemovalFacade removerClient = (WatcherRemovalFacade)client.newWatcherRemoveCuratorFramework(); |
| |
| final CountDownLatch createdLatch = new CountDownLatch(1); |
| final CountDownLatch deletedLatch = new CountDownLatch(1); |
| Watcher watcher = new Watcher() |
| { |
| @Override |
| public void process(WatchedEvent event) |
| { |
| if ( event.getType() == Event.EventType.NodeCreated ) |
| { |
| try |
| { |
| removerClient.checkExists().usingWatcher(this).forPath("/yo"); |
| } |
| catch ( Exception e ) |
| { |
| e.printStackTrace(); |
| } |
| createdLatch.countDown(); |
| } |
| else if ( event.getType() == Event.EventType.NodeDeleted ) |
| { |
| deletedLatch.countDown(); |
| } |
| } |
| }; |
| |
| removerClient.checkExists().usingWatcher(watcher).forPath("/yo"); |
| Assert.assertEquals(removerClient.getRemovalManager().getEntries().size(), 1); |
| removerClient.create().forPath("/yo"); |
| |
| Assert.assertTrue(timing.awaitLatch(createdLatch)); |
| Assert.assertEquals(removerClient.getRemovalManager().getEntries().size(), 1); |
| |
| removerClient.delete().forPath("/yo"); |
| |
| Assert.assertTrue(timing.awaitLatch(deletedLatch)); |
| |
| Assert.assertEquals(removerClient.getRemovalManager().getEntries().size(), 0); |
| } |
| finally |
| { |
| TestCleanState.closeAndTestClean(client); |
| } |
| } |
| |
| private void internalTryBasic(CuratorFramework client) throws Exception |
| { |
| WatcherRemoveCuratorFramework removerClient = client.newWatcherRemoveCuratorFramework(); |
| |
| final CountDownLatch latch = new CountDownLatch(1); |
| Watcher watcher = new Watcher() |
| { |
| @Override |
| public void process(WatchedEvent event) |
| { |
| if ( event.getType() == Event.EventType.DataWatchRemoved ) |
| { |
| latch.countDown(); |
| } |
| } |
| }; |
| removerClient.checkExists().usingWatcher(watcher).forPath("/hey"); |
| |
| List<String> existWatches = WatchersDebug.getExistWatches(client.getZookeeperClient().getZooKeeper()); |
| Assert.assertEquals(existWatches.size(), 1); |
| |
| removerClient.removeWatchers(); |
| |
| Assert.assertTrue(new Timing().awaitLatch(latch)); |
| |
| existWatches = WatchersDebug.getExistWatches(client.getZookeeperClient().getZooKeeper()); |
| Assert.assertEquals(existWatches.size(), 0); |
| } |
| } |