| /** |
| * 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; |
| |
| import static org.junit.jupiter.api.Assertions.assertArrayEquals; |
| import static org.junit.jupiter.api.Assertions.assertEquals; |
| import static org.junit.jupiter.api.Assertions.assertFalse; |
| import static org.junit.jupiter.api.Assertions.assertNotNull; |
| import static org.junit.jupiter.api.Assertions.assertTrue; |
| import java.time.Duration; |
| import org.apache.curator.ensemble.fixed.FixedEnsembleProvider; |
| import org.apache.curator.retry.RetryOneTime; |
| import org.apache.curator.test.BaseClassForTests; |
| import org.apache.curator.test.Timing; |
| import org.apache.curator.utils.ZookeeperFactory; |
| import org.apache.zookeeper.CreateMode; |
| import org.apache.zookeeper.KeeperException; |
| import org.apache.zookeeper.Watcher; |
| import org.apache.zookeeper.ZooDefs; |
| import org.apache.zookeeper.ZooKeeper; |
| import org.awaitility.Awaitility; |
| import org.junit.jupiter.api.Assertions; |
| import org.junit.jupiter.api.Test; |
| import org.mockito.Mockito; |
| import java.util.concurrent.CountDownLatch; |
| import java.util.concurrent.atomic.AtomicBoolean; |
| |
| public class BasicTests extends BaseClassForTests |
| { |
| @Test |
| public void testFactory() throws Exception |
| { |
| final ZooKeeper mockZookeeper = Mockito.mock(ZooKeeper.class); |
| ZookeeperFactory zookeeperFactory = |
| (connectString, sessionTimeout, watcher, canBeReadOnly) -> mockZookeeper; |
| CuratorZookeeperClient client = new CuratorZookeeperClient(zookeeperFactory, new FixedEnsembleProvider(server.getConnectString()), 10000, 10000, null, new RetryOneTime(1), false); |
| client.start(); |
| assertEquals(client.getZooKeeper(), mockZookeeper); |
| } |
| |
| @Test |
| public void testExpiredSession() throws Exception |
| { |
| // see http://wiki.apache.org/hadoop/ZooKeeper/FAQ#A4 |
| |
| final Timing timing = new Timing(); |
| |
| final CountDownLatch latch = new CountDownLatch(1); |
| Watcher watcher = event -> { |
| if ( event.getState() == Watcher.Event.KeeperState.Expired ) |
| { |
| latch.countDown(); |
| } |
| }; |
| |
| final CuratorZookeeperClient client = new CuratorZookeeperClient(server.getConnectString(), timing.session(), timing.connection(), watcher, new RetryOneTime(2)); |
| client.start(); |
| try |
| { |
| final AtomicBoolean firstTime = new AtomicBoolean(true); |
| RetryLoop.callWithRetry |
| ( |
| client, |
| () -> { |
| if ( firstTime.compareAndSet(true, false) ) |
| { |
| try |
| { |
| client.getZooKeeper().create("/foo", new byte[0], ZooDefs.Ids.OPEN_ACL_UNSAFE, CreateMode.PERSISTENT); |
| } |
| catch ( KeeperException.NodeExistsException ignore ) |
| { |
| // ignore |
| } |
| |
| client.getZooKeeper().getTestable().injectSessionExpiration(); |
| |
| assertTrue(timing.awaitLatch(latch)); |
| } |
| ZooKeeper zooKeeper = client.getZooKeeper(); |
| client.blockUntilConnectedOrTimedOut(); |
| assertNotNull(zooKeeper.exists("/foo", false)); |
| return null; |
| } |
| ); |
| } |
| finally |
| { |
| client.close(); |
| } |
| } |
| |
| @Test |
| public void testReconnect() throws Exception |
| { |
| CuratorZookeeperClient client = new CuratorZookeeperClient(server.getConnectString(), 10000, 10000, null, new RetryOneTime(1)); |
| client.start(); |
| try |
| { |
| client.blockUntilConnectedOrTimedOut(); |
| |
| byte[] writtenData = {1, 2, 3}; |
| client.getZooKeeper().create("/test", writtenData, ZooDefs.Ids.OPEN_ACL_UNSAFE, CreateMode.PERSISTENT); |
| Thread.sleep(1000); |
| server.stop(); |
| Thread.sleep(1000); |
| |
| server.restart(); |
| assertTrue(client.blockUntilConnectedOrTimedOut()); |
| byte[] readData = client.getZooKeeper().getData("/test", false, null); |
| assertArrayEquals(readData, writtenData); |
| } |
| finally |
| { |
| client.close(); |
| } |
| } |
| |
| @Test |
| public void testSimple() throws Exception |
| { |
| CuratorZookeeperClient client = new CuratorZookeeperClient(server.getConnectString(), 10000, 10000, null, new RetryOneTime(1)); |
| client.start(); |
| try |
| { |
| client.blockUntilConnectedOrTimedOut(); |
| String path = client.getZooKeeper().create("/test", new byte[]{1,2,3}, ZooDefs.Ids.OPEN_ACL_UNSAFE, CreateMode.PERSISTENT); |
| assertEquals(path, "/test"); |
| } |
| finally |
| { |
| client.close(); |
| } |
| } |
| |
| @Test |
| public void testBackgroundConnect() throws Exception |
| { |
| final int CONNECTION_TIMEOUT_MS = 4000; |
| try (CuratorZookeeperClient client = new CuratorZookeeperClient(server.getConnectString(), 10000, |
| CONNECTION_TIMEOUT_MS, null, new RetryOneTime(1))) { |
| assertFalse(client.isConnected()); |
| client.start(); |
| Awaitility.await() |
| .atMost(Duration.ofMillis(CONNECTION_TIMEOUT_MS)) |
| .untilAsserted(() -> Assertions.assertTrue(client.isConnected())); |
| } |
| } |
| } |