| /** |
| * 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.queue; |
| |
| 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.framework.state.ConnectionState; |
| import org.apache.curator.framework.state.ConnectionStateListener; |
| import org.apache.curator.retry.RetryOneTime; |
| import org.mockito.Mockito; |
| import org.testng.Assert; |
| import org.testng.annotations.Test; |
| import java.util.List; |
| import java.util.concurrent.CountDownLatch; |
| import java.util.concurrent.TimeUnit; |
| |
| @SuppressWarnings({"SynchronizationOnLocalVariableOrMethodParameter"}) |
| public class TestDistributedIdQueue extends BaseClassForTests |
| { |
| private static final String QUEUE_PATH = "/a/queue"; |
| |
| private static final QueueSerializer<TestQueueItem> serializer = new QueueItemSerializer(); |
| |
| @Test |
| public void testDeletingWithLock() throws Exception |
| { |
| DistributedIdQueue<TestQueueItem> queue = null; |
| CuratorFramework client = CuratorFrameworkFactory.newClient(server.getConnectString(), new RetryOneTime(1)); |
| client.start(); |
| try |
| { |
| final CountDownLatch consumingLatch = new CountDownLatch(1); |
| final CountDownLatch waitLatch = new CountDownLatch(1); |
| QueueConsumer<TestQueueItem> consumer = new QueueConsumer<TestQueueItem>() |
| { |
| @Override |
| public void consumeMessage(TestQueueItem message) throws Exception |
| { |
| consumingLatch.countDown(); |
| waitLatch.await(); |
| } |
| |
| @Override |
| public void stateChanged(CuratorFramework client, ConnectionState newState) |
| { |
| } |
| }; |
| |
| queue = QueueBuilder.builder(client, consumer, serializer, QUEUE_PATH).lockPath("/locks").buildIdQueue(); |
| queue.start(); |
| |
| queue.put(new TestQueueItem("test"), "id"); |
| |
| Assert.assertTrue(consumingLatch.await(10, TimeUnit.SECONDS)); // wait until consumer has it |
| Assert.assertEquals(queue.remove("id"), 0); |
| |
| waitLatch.countDown(); |
| } |
| finally |
| { |
| CloseableUtils.closeQuietly(queue); |
| CloseableUtils.closeQuietly(client); |
| } |
| } |
| |
| @Test |
| public void testOrdering() throws Exception |
| { |
| final int ITEM_QTY = 100; |
| |
| DistributedIdQueue<TestQueueItem> queue = null; |
| CuratorFramework client = CuratorFrameworkFactory.newClient(server.getConnectString(), new RetryOneTime(1)); |
| client.start(); |
| try |
| { |
| BlockingQueueConsumer<TestQueueItem> consumer = new BlockingQueueConsumer<TestQueueItem>(Mockito.mock(ConnectionStateListener.class)); |
| |
| queue = QueueBuilder.builder(client, consumer, serializer, QUEUE_PATH).buildIdQueue(); |
| queue.start(); |
| |
| List<String> ids = Lists.newArrayList(); |
| for ( int i = 0; i < ITEM_QTY; ++i ) |
| { |
| String id = Double.toString(Math.random()); |
| ids.add(id); |
| queue.put(new TestQueueItem(id), id); |
| } |
| |
| int iteration = 0; |
| while ( consumer.size() < ITEM_QTY ) |
| { |
| Assert.assertTrue(++iteration < ITEM_QTY); |
| Thread.sleep(1000); |
| } |
| |
| int i = 0; |
| for ( TestQueueItem item : consumer.getItems() ) |
| { |
| Assert.assertEquals(item.str, ids.get(i++)); |
| } |
| } |
| finally |
| { |
| CloseableUtils.closeQuietly(queue); |
| CloseableUtils.closeQuietly(client); |
| } |
| } |
| |
| @Test |
| public void testRequeuingWithLock() throws Exception |
| { |
| DistributedIdQueue<TestQueueItem> queue = null; |
| CuratorFramework client = CuratorFrameworkFactory.newClient(server.getConnectString(), new RetryOneTime(1)); |
| client.start(); |
| try |
| { |
| final CountDownLatch consumingLatch = new CountDownLatch(1); |
| |
| QueueConsumer<TestQueueItem> consumer = new QueueConsumer<TestQueueItem>() |
| { |
| @Override |
| public void consumeMessage(TestQueueItem message) throws Exception |
| { |
| consumingLatch.countDown(); |
| // Throw an exception so requeuing occurs |
| throw new Exception("Consumer failed"); |
| } |
| |
| @Override |
| public void stateChanged(CuratorFramework client, ConnectionState newState) |
| { |
| } |
| }; |
| |
| queue = QueueBuilder.builder(client, consumer, serializer, QUEUE_PATH).lockPath("/locks").buildIdQueue(); |
| queue.start(); |
| |
| queue.put(new TestQueueItem("test"), "id"); |
| |
| Assert.assertTrue(consumingLatch.await(10, TimeUnit.SECONDS)); // wait until consumer has it |
| |
| // Sleep one more second |
| |
| Thread.sleep(1000); |
| |
| Assert.assertTrue(queue.debugIsQueued("id")); |
| |
| } |
| finally |
| { |
| CloseableUtils.closeQuietly(queue); |
| CloseableUtils.closeQuietly(client); |
| } |
| } |
| } |