| /** |
| * 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 com.google.common.collect.Sets; |
| import org.apache.curator.framework.CuratorFramework; |
| import org.apache.curator.framework.CuratorFrameworkFactory; |
| import org.apache.curator.framework.api.CuratorWatcher; |
| import org.apache.curator.retry.RetryOneTime; |
| import org.apache.curator.test.BaseClassForTests; |
| import org.apache.curator.test.Timing; |
| import org.apache.curator.utils.CloseableUtils; |
| import org.apache.zookeeper.WatchedEvent; |
| import org.apache.zookeeper.Watcher; |
| import org.awaitility.Awaitility; |
| import org.junit.jupiter.api.Test; |
| import org.mockito.Mockito; |
| |
| import java.util.Set; |
| import java.util.concurrent.atomic.AtomicInteger; |
| |
| import static org.junit.jupiter.api.Assertions.assertEquals; |
| import static org.junit.jupiter.api.Assertions.assertFalse; |
| import static org.mockito.Matchers.any; |
| import static org.mockito.Mockito.mock; |
| |
| public class TestWatcherIdentity extends BaseClassForTests |
| { |
| private static final String PATH = "/foo"; |
| private static final int TIMEOUT_MS = 100000; |
| |
| private static class CountZKWatcher implements Watcher |
| { |
| private final AtomicInteger count = new AtomicInteger(0); |
| |
| @Override |
| public void process(WatchedEvent event) |
| { |
| count.incrementAndGet(); |
| } |
| } |
| |
| @Test |
| public void testSameWatcherPerZKDocs() throws Exception |
| { |
| CountZKWatcher actualWatcher = new CountZKWatcher(); |
| Timing timing = new Timing(); |
| CuratorFramework client = CuratorFrameworkFactory.newClient(server.getConnectString(), timing.session(), |
| timing.connection(), new RetryOneTime(1)); |
| try { |
| client.start(); |
| client.create().forPath("/test"); |
| |
| // per ZK docs, this watcher should only trigger once |
| client.checkExists().usingWatcher(actualWatcher).forPath("/test"); |
| client.getData().usingWatcher(actualWatcher).forPath("/test"); |
| |
| client.setData().forPath("/test", "foo".getBytes()); |
| client.delete().forPath("/test"); |
| Awaitility.await() |
| .untilAsserted(() -> assertEquals(1, actualWatcher.count.getAndSet(0))); |
| |
| client.create().forPath("/test"); |
| client.checkExists().usingWatcher(actualWatcher).forPath("/test"); |
| client.delete().forPath("/test"); |
| Awaitility.await() |
| .untilAsserted(() -> assertEquals(1, actualWatcher.count.get())); |
| } finally { |
| CloseableUtils.closeQuietly(client); |
| } |
| } |
| |
| @Test |
| public void testSameCuratorWatcherPerZKDocs() throws Exception |
| { |
| // Construct mock object |
| CuratorWatcher actualWatcher = mock(CuratorWatcher.class); |
| |
| Timing timing = new Timing(); |
| CuratorFramework client = CuratorFrameworkFactory.newClient(server.getConnectString(), timing.session(), |
| timing.connection(), new RetryOneTime(1)); |
| try { |
| client.start(); |
| client.create().forPath("/test"); |
| |
| // per ZK docs, this watcher should only trigger once |
| client.checkExists().usingWatcher(actualWatcher).forPath("/test"); |
| client.getData().usingWatcher(actualWatcher).forPath("/test"); |
| |
| client.setData().forPath("/test", "foo".getBytes()); |
| client.delete().forPath("/test"); |
| Mockito.verify(actualWatcher, Mockito.timeout(TIMEOUT_MS).times(1)).process(any(WatchedEvent.class)); |
| |
| client.create().forPath("/test"); |
| client.checkExists().usingWatcher(actualWatcher).forPath("/test"); |
| client.delete().forPath("/test"); |
| Mockito.verify(actualWatcher, Mockito.timeout(TIMEOUT_MS).times(2)).process(any(WatchedEvent.class)); |
| } finally { |
| CloseableUtils.closeQuietly(client); |
| } |
| } |
| |
| @Test |
| public void testSetAddition() |
| { |
| Watcher watcher = new Watcher() |
| { |
| @Override |
| public void process(WatchedEvent event) |
| { |
| |
| } |
| }; |
| NamespaceWatcher namespaceWatcher1 = new NamespaceWatcher(null, watcher, "/foo"); |
| NamespaceWatcher namespaceWatcher2 = new NamespaceWatcher(null, watcher, "/foo"); |
| assertEquals(namespaceWatcher1, namespaceWatcher2); |
| assertFalse(namespaceWatcher1.equals(watcher)); |
| assertFalse(watcher.equals(namespaceWatcher1)); |
| Set<Watcher> set = Sets.newHashSet(); |
| set.add(namespaceWatcher1); |
| set.add(namespaceWatcher2); |
| assertEquals(set.size(), 1); |
| } |
| |
| @Test |
| public void testCuratorWatcher() throws Exception |
| { |
| Timing timing = new Timing(); |
| // Construct mock object |
| CuratorWatcher watcher = mock(CuratorWatcher.class); |
| CuratorFramework client = CuratorFrameworkFactory.newClient(server.getConnectString(), timing.session(), |
| timing.connection(), new RetryOneTime(1)); |
| try { |
| client.start(); |
| client.create().forPath(PATH); |
| // Add twice the same watcher on the same path |
| client.getData().usingWatcher(watcher).forPath(PATH); |
| client.getData().usingWatcher(watcher).forPath(PATH); |
| // Ok, let's test it |
| client.setData().forPath(PATH, new byte[] {}); |
| Mockito.verify(watcher, Mockito.timeout(TIMEOUT_MS).times(1)).process(any(WatchedEvent.class)); |
| } finally { |
| CloseableUtils.closeQuietly(client); |
| } |
| } |
| |
| @Test |
| public void testZKWatcher() throws Exception |
| { |
| Timing timing = new Timing(); |
| CountZKWatcher watcher = new CountZKWatcher(); |
| CuratorFramework client = CuratorFrameworkFactory.newClient(server.getConnectString(), timing.session(), |
| timing.connection(), new RetryOneTime(1)); |
| try { |
| client.start(); |
| client.create().forPath(PATH); |
| // Add twice the same watcher on the same path |
| client.getData().usingWatcher(watcher).forPath(PATH); |
| client.getData().usingWatcher(watcher).forPath(PATH); |
| // Ok, let's test it |
| client.setData().forPath(PATH, new byte[] {}); |
| Awaitility.await() |
| .untilAsserted(() -> assertEquals(1, watcher.count.get())); |
| } finally { |
| CloseableUtils.closeQuietly(client); |
| } |
| } |
| } |