| /** |
| * 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 static org.junit.jupiter.api.Assertions.assertFalse; |
| import static org.junit.jupiter.api.Assertions.assertNotNull; |
| import static org.junit.jupiter.api.Assertions.assertNull; |
| import static org.junit.jupiter.api.Assertions.assertTrue; |
| import static org.junit.jupiter.api.Assertions.fail; |
| |
| import org.apache.curator.framework.CuratorFramework; |
| import org.apache.curator.framework.CuratorFrameworkFactory; |
| import org.apache.curator.framework.api.BackgroundCallback; |
| import org.apache.curator.framework.api.CuratorEvent; |
| 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.BaseClassForTests; |
| import org.apache.curator.test.Timing; |
| import org.apache.curator.utils.CloseableUtils; |
| import org.apache.zookeeper.KeeperException; |
| import org.apache.zookeeper.KeeperException.NoNodeException; |
| import org.junit.jupiter.api.Test; |
| |
| import java.util.concurrent.CountDownLatch; |
| import java.util.concurrent.Semaphore; |
| import java.util.concurrent.atomic.AtomicBoolean; |
| |
| public class TestFailedDeleteManager extends BaseClassForTests |
| { |
| @Test |
| public void testLostSession() throws Exception |
| { |
| Timing timing = new Timing(); |
| CuratorFramework client = CuratorFrameworkFactory.newClient(server.getConnectString(), timing.session(), timing.connection(), new ExponentialBackoffRetry(100, 3)); |
| try |
| { |
| client.start(); |
| |
| client.create().forPath("/test-me"); |
| |
| final CountDownLatch latch = new CountDownLatch(1); |
| final Semaphore semaphore = new Semaphore(0); |
| ConnectionStateListener listener = new ConnectionStateListener() |
| { |
| @Override |
| public void stateChanged(CuratorFramework client, ConnectionState newState) |
| { |
| if ( (newState == ConnectionState.LOST) || (newState == ConnectionState.SUSPENDED) ) |
| { |
| semaphore.release(); |
| } |
| else if ( newState == ConnectionState.RECONNECTED ) |
| { |
| latch.countDown(); |
| } |
| } |
| }; |
| client.getConnectionStateListenable().addListener(listener); |
| server.stop(); |
| |
| assertTrue(timing.acquireSemaphore(semaphore)); |
| try |
| { |
| client.delete().guaranteed().forPath("/test-me"); |
| fail(); |
| } |
| catch ( KeeperException.ConnectionLossException | KeeperException.SessionExpiredException e ) |
| { |
| // expected |
| } |
| assertTrue(timing.acquireSemaphore(semaphore)); |
| |
| timing.sleepABit(); |
| |
| server.restart(); |
| assertTrue(timing.awaitLatch(latch)); |
| |
| timing.sleepABit(); |
| |
| assertNull(client.checkExists().forPath("/test-me")); |
| } |
| finally |
| { |
| CloseableUtils.closeQuietly(client); |
| } |
| } |
| |
| @Test |
| public void testWithNamespaceAndLostSession() throws Exception |
| { |
| Timing timing = new Timing(); |
| CuratorFramework client = CuratorFrameworkFactory.builder().connectString(server.getConnectString()) |
| .sessionTimeoutMs(timing.session()) |
| .connectionTimeoutMs(timing.connection()) |
| .retryPolicy(new ExponentialBackoffRetry(100, 3)) |
| .namespace("aisa") |
| .build(); |
| try |
| { |
| client.start(); |
| |
| client.create().forPath("/test-me"); |
| |
| final CountDownLatch latch = new CountDownLatch(1); |
| final Semaphore semaphore = new Semaphore(0); |
| ConnectionStateListener listener = new ConnectionStateListener() |
| { |
| @Override |
| public void stateChanged(CuratorFramework client, ConnectionState newState) |
| { |
| if ( (newState == ConnectionState.LOST) || (newState == ConnectionState.SUSPENDED) ) |
| { |
| semaphore.release(); |
| } |
| else if ( newState == ConnectionState.RECONNECTED ) |
| { |
| latch.countDown(); |
| } |
| } |
| }; |
| client.getConnectionStateListenable().addListener(listener); |
| server.stop(); |
| |
| assertTrue(timing.acquireSemaphore(semaphore)); |
| try |
| { |
| client.delete().guaranteed().forPath("/test-me"); |
| fail(); |
| } |
| catch ( KeeperException.ConnectionLossException | KeeperException.SessionExpiredException e ) |
| { |
| // expected |
| } |
| assertTrue(timing.acquireSemaphore(semaphore)); |
| |
| timing.sleepABit(); |
| |
| server.restart(); |
| assertTrue(timing.awaitLatch(latch)); |
| |
| timing.sleepABit(); |
| |
| assertNull(client.checkExists().forPath("/test-me")); |
| } |
| finally |
| { |
| CloseableUtils.closeQuietly(client); |
| } |
| } |
| |
| @Test |
| public void testWithNamespaceAndLostSessionAlt() throws Exception |
| { |
| Timing timing = new Timing(); |
| CuratorFramework client = CuratorFrameworkFactory.builder().connectString(server.getConnectString()) |
| .sessionTimeoutMs(timing.session()) |
| .connectionTimeoutMs(timing.connection()) |
| .retryPolicy(new ExponentialBackoffRetry(100, 3)) |
| .build(); |
| try |
| { |
| client.start(); |
| |
| CuratorFramework namespaceClient = client.usingNamespace("foo"); |
| namespaceClient.create().forPath("/test-me"); |
| |
| final CountDownLatch latch = new CountDownLatch(1); |
| final Semaphore semaphore = new Semaphore(0); |
| ConnectionStateListener listener = new ConnectionStateListener() |
| { |
| @Override |
| public void stateChanged(CuratorFramework client, ConnectionState newState) |
| { |
| if ( (newState == ConnectionState.LOST) || (newState == ConnectionState.SUSPENDED) ) |
| { |
| semaphore.release(); |
| } |
| else if ( newState == ConnectionState.RECONNECTED ) |
| { |
| latch.countDown(); |
| } |
| } |
| }; |
| namespaceClient.getConnectionStateListenable().addListener(listener); |
| server.stop(); |
| |
| assertTrue(timing.acquireSemaphore(semaphore)); |
| try |
| { |
| namespaceClient.delete().guaranteed().forPath("/test-me"); |
| fail(); |
| } |
| catch ( KeeperException.ConnectionLossException | KeeperException.SessionExpiredException e ) |
| { |
| // expected |
| } |
| assertTrue(timing.acquireSemaphore(semaphore)); |
| |
| timing.sleepABit(); |
| |
| server.restart(); |
| assertTrue(timing.awaitLatch(latch)); |
| |
| timing.sleepABit(); |
| |
| assertNull(namespaceClient.checkExists().forPath("/test-me")); |
| } |
| finally |
| { |
| CloseableUtils.closeQuietly(client); |
| } |
| } |
| |
| @Test |
| public void testBasic() throws Exception |
| { |
| final String PATH = "/one/two/three"; |
| |
| Timing timing = new Timing(); |
| CuratorFrameworkFactory.Builder builder = CuratorFrameworkFactory.builder(); |
| builder.connectString(server.getConnectString()).retryPolicy(new RetryOneTime(1)).connectionTimeoutMs(timing.connection()).sessionTimeoutMs(timing.session()); |
| CuratorFrameworkImpl client = new CuratorFrameworkImpl(builder); |
| client.start(); |
| try |
| { |
| client.create().creatingParentsIfNeeded().forPath(PATH); |
| assertNotNull(client.checkExists().forPath(PATH)); |
| |
| server.stop(); // cause the next delete to fail |
| try |
| { |
| client.delete().forPath(PATH); |
| fail(); |
| } |
| catch ( KeeperException.ConnectionLossException | KeeperException.SessionExpiredException e ) |
| { |
| // expected |
| } |
| |
| server.restart(); |
| assertNotNull(client.checkExists().forPath(PATH)); |
| |
| server.stop(); // cause the next delete to fail |
| try |
| { |
| client.delete().guaranteed().forPath(PATH); |
| fail(); |
| } |
| catch ( KeeperException.ConnectionLossException | KeeperException.SessionExpiredException e ) |
| { |
| // expected |
| } |
| |
| server.restart(); |
| |
| final int TRIES = 5; |
| for ( int i = 0; i < TRIES; ++i ) |
| { |
| if ( client.checkExists().forPath(PATH) != null ) |
| { |
| timing.sleepABit(); |
| } |
| } |
| assertNull(client.checkExists().forPath(PATH)); |
| } |
| finally |
| { |
| CloseableUtils.closeQuietly(client); |
| } |
| } |
| |
| @Test |
| public void testGuaranteedDeleteOnNonExistentNodeInForeground() throws Exception |
| { |
| CuratorFramework client = CuratorFrameworkFactory.newClient(server.getConnectString(), new RetryOneTime(1)); |
| client.start(); |
| |
| final AtomicBoolean pathAdded = new AtomicBoolean(false); |
| |
| ((CuratorFrameworkImpl)client).getFailedDeleteManager().debugListener = new FailedOperationManager.FailedOperationManagerListener<String>() |
| { |
| |
| @Override |
| public void pathAddedForGuaranteedOperation(String path) |
| { |
| pathAdded.set(true); |
| } |
| }; |
| |
| try |
| { |
| client.delete().guaranteed().forPath("/nonexistent"); |
| fail(); |
| } |
| catch(NoNodeException e) |
| { |
| //Exception is expected, the delete should not be retried |
| assertFalse(pathAdded.get()); |
| } |
| finally |
| { |
| client.close(); |
| } |
| } |
| |
| @Test |
| public void testGuaranteedDeleteOnNonExistentNodeInBackground() throws Exception |
| { |
| CuratorFramework client = CuratorFrameworkFactory.newClient(server.getConnectString(), new RetryOneTime(1)); |
| client.start(); |
| |
| final AtomicBoolean pathAdded = new AtomicBoolean(false); |
| |
| ((CuratorFrameworkImpl)client).getFailedDeleteManager().debugListener = new FailedOperationManager.FailedOperationManagerListener<String>() |
| { |
| |
| @Override |
| public void pathAddedForGuaranteedOperation(String path) |
| { |
| pathAdded.set(true); |
| } |
| }; |
| |
| final CountDownLatch backgroundLatch = new CountDownLatch(1); |
| |
| BackgroundCallback background = new BackgroundCallback() |
| { |
| |
| @Override |
| public void processResult(CuratorFramework client, CuratorEvent event) |
| throws Exception |
| { |
| backgroundLatch.countDown(); |
| } |
| }; |
| |
| try |
| { |
| client.delete().guaranteed().inBackground(background).forPath("/nonexistent"); |
| |
| backgroundLatch.await(); |
| |
| //Exception is expected, the delete should not be retried |
| assertFalse(pathAdded.get()); |
| } |
| finally |
| { |
| client.close(); |
| } |
| } |
| } |