| /** |
| * 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.storm.utils; |
| |
| import java.util.concurrent.atomic.AtomicBoolean; |
| import java.util.concurrent.atomic.AtomicReference; |
| |
| import com.lmax.disruptor.EventHandler; |
| import com.lmax.disruptor.dsl.ProducerType; |
| import org.junit.Assert; |
| import org.junit.Test; |
| import junit.framework.TestCase; |
| |
| public class DisruptorQueueTest extends TestCase { |
| |
| private final static int TIMEOUT = 5000; // MS |
| private final static int PRODUCER_NUM = 4; |
| |
| @Test |
| public void testFirstMessageFirst() throws InterruptedException { |
| for (int i = 0; i < 100; i++) { |
| DisruptorQueue queue = createQueue("firstMessageOrder", 16); |
| |
| queue.publish("FIRST"); |
| |
| Runnable producer = new IncProducer(queue, i+100); |
| |
| final AtomicReference<Object> result = new AtomicReference<>(); |
| Runnable consumer = new Consumer(queue, new EventHandler<Object>() { |
| private boolean head = true; |
| |
| @Override |
| public void onEvent(Object obj, long sequence, boolean endOfBatch) |
| throws Exception { |
| if (head) { |
| head = false; |
| result.set(obj); |
| } |
| } |
| }); |
| |
| run(producer, consumer, queue); |
| Assert.assertEquals("We expect to receive first published message first, but received " + result.get(), |
| "FIRST", result.get()); |
| } |
| } |
| |
| @Test |
| public void testInOrder() throws InterruptedException { |
| final AtomicBoolean allInOrder = new AtomicBoolean(true); |
| |
| DisruptorQueue queue = createQueue("consumerHang", 1024); |
| Runnable producer = new IncProducer(queue, 1024*1024); |
| Runnable consumer = new Consumer(queue, new EventHandler<Object>() { |
| long _expected = 0; |
| @Override |
| public void onEvent(Object obj, long sequence, boolean endOfBatch) |
| throws Exception { |
| if (_expected != ((Number)obj).longValue()) { |
| allInOrder.set(false); |
| System.out.println("Expected "+_expected+" but got "+obj); |
| } |
| _expected++; |
| } |
| }); |
| |
| run(producer, consumer, queue, 1000, 1); |
| Assert.assertTrue("Messages delivered out of order", |
| allInOrder.get()); |
| } |
| |
| @Test |
| public void testInOrderBatch() throws InterruptedException { |
| final AtomicBoolean allInOrder = new AtomicBoolean(true); |
| |
| DisruptorQueue queue = createQueue("consumerHang", 10, 1024); |
| Runnable producer = new IncProducer(queue, 1024*1024); |
| Runnable consumer = new Consumer(queue, new EventHandler<Object>() { |
| long _expected = 0; |
| @Override |
| public void onEvent(Object obj, long sequence, boolean endOfBatch) |
| throws Exception { |
| if (_expected != ((Number)obj).longValue()) { |
| allInOrder.set(false); |
| System.out.println("Expected "+_expected+" but got "+obj); |
| } |
| _expected++; |
| } |
| }); |
| |
| run(producer, consumer, queue, 1000, 1); |
| Assert.assertTrue("Messages delivered out of order", |
| allInOrder.get()); |
| } |
| |
| |
| private void run(Runnable producer, Runnable consumer, DisruptorQueue queue) |
| throws InterruptedException { |
| run(producer, consumer, queue, 10, PRODUCER_NUM); |
| } |
| |
| private void run(Runnable producer, Runnable consumer, DisruptorQueue queue, int sleepMs, int producerNum) |
| throws InterruptedException { |
| |
| Thread[] producerThreads = new Thread[producerNum]; |
| for (int i = 0; i < producerNum; i++) { |
| producerThreads[i] = new Thread(producer); |
| producerThreads[i].start(); |
| } |
| |
| Thread consumerThread = new Thread(consumer); |
| consumerThread.start(); |
| Thread.sleep(sleepMs); |
| for (int i = 0; i < producerNum; i++) { |
| producerThreads[i].interrupt(); |
| } |
| |
| for (int i = 0; i < producerNum; i++) { |
| producerThreads[i].join(TIMEOUT); |
| assertFalse("producer "+i+" is still alive", producerThreads[i].isAlive()); |
| } |
| queue.haltWithInterrupt(); |
| consumerThread.join(TIMEOUT); |
| assertFalse("consumer is still alive", consumerThread.isAlive()); |
| } |
| |
| private static class IncProducer implements Runnable { |
| private DisruptorQueue queue; |
| private long _max; |
| |
| IncProducer(DisruptorQueue queue, long max) { |
| this.queue = queue; |
| this._max = max; |
| } |
| |
| @Override |
| public void run() { |
| for (long i = 0; i < _max && !(Thread.currentThread().isInterrupted()); i++) { |
| queue.publish(i); |
| } |
| } |
| } |
| |
| private static class Consumer implements Runnable { |
| private EventHandler handler; |
| private DisruptorQueue queue; |
| |
| Consumer(DisruptorQueue queue, EventHandler handler) { |
| this.handler = handler; |
| this.queue = queue; |
| } |
| |
| @Override |
| public void run() { |
| try { |
| while(true) { |
| queue.consumeBatchWhenAvailable(handler); |
| } |
| } catch(RuntimeException e) { |
| //break |
| } |
| } |
| } |
| |
| private static DisruptorQueue createQueue(String name, int queueSize) { |
| return new DisruptorQueue(name, ProducerType.MULTI, queueSize, 0L, 1, 1L, "test", "test", 1000, 1000); |
| } |
| |
| private static DisruptorQueue createQueue(String name, int batchSize, int queueSize) { |
| return new DisruptorQueue(name, ProducerType.MULTI, queueSize, 0L, batchSize, 1L, "test", "test", 1000, 1000); |
| } |
| } |