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ActiveMQ example source code file (LargeStreamletTest.java)
The ActiveMQ LargeStreamletTest.java source code/** * 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.activemq; /** * 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. */ import java.io.InputStream; import java.io.OutputStream; import java.util.Random; import java.util.concurrent.atomic.AtomicBoolean; import java.util.concurrent.atomic.AtomicInteger; import javax.jms.Destination; import javax.jms.Session; import junit.framework.Assert; import junit.framework.TestCase; import org.slf4j.Logger; import org.slf4j.LoggerFactory; /** * @author rnewson */ public final class LargeStreamletTest extends TestCase { private static final Logger LOG = LoggerFactory.getLogger(LargeStreamletTest.class); private static final String BROKER_URL = "vm://localhost?broker.persistent=false"; private static final int BUFFER_SIZE = 1 * 1024; private static final int MESSAGE_COUNT = 10 * 1024; protected Exception writerException; protected Exception readerException; private AtomicInteger totalRead = new AtomicInteger(); private AtomicInteger totalWritten = new AtomicInteger(); private AtomicBoolean stopThreads = new AtomicBoolean(false); public void testStreamlets() throws Exception { final ActiveMQConnectionFactory factory = new ActiveMQConnectionFactory(BROKER_URL); final ActiveMQConnection connection = (ActiveMQConnection)factory.createConnection(); connection.start(); try { final Session session = connection.createSession(false, Session.AUTO_ACKNOWLEDGE); try { final Destination destination = session.createQueue("wibble"); final Thread readerThread = new Thread(new Runnable() { public void run() { totalRead.set(0); try { final InputStream inputStream = connection.createInputStream(destination); try { int read; final byte[] buf = new byte[BUFFER_SIZE]; while (!stopThreads.get() && (read = inputStream.read(buf)) != -1) { totalRead.addAndGet(read); } } finally { inputStream.close(); } } catch (Exception e) { readerException = e; e.printStackTrace(); } finally { LOG.info(totalRead + " total bytes read."); } } }); final Thread writerThread = new Thread(new Runnable() { private final Random random = new Random(); public void run() { totalWritten.set(0); int count = MESSAGE_COUNT; try { final OutputStream outputStream = connection.createOutputStream(destination); try { final byte[] buf = new byte[BUFFER_SIZE]; random.nextBytes(buf); while (count > 0 && !stopThreads.get()) { outputStream.write(buf); totalWritten.addAndGet(buf.length); count--; } } finally { outputStream.close(); } } catch (Exception e) { writerException = e; e.printStackTrace(); } finally { LOG.info(totalWritten + " total bytes written."); } } }); readerThread.start(); writerThread.start(); // Wait till reader is has finished receiving all the messages // or he has stopped // receiving messages. Thread.sleep(1000); int lastRead = totalRead.get(); while (readerThread.isAlive()) { readerThread.join(1000); // No progress?? then stop waiting.. if (lastRead == totalRead.get()) { break; } lastRead = totalRead.get(); } stopThreads.set(true); assertTrue("Should not have received a reader exception", readerException == null); assertTrue("Should not have received a writer exception", writerException == null); Assert.assertEquals("Not all messages accounted for", totalWritten.get(), totalRead.get()); } finally { session.close(); } } finally { connection.close(); } } } Other ActiveMQ examples (source code examples)Here is a short list of links related to this ActiveMQ LargeStreamletTest.java source code file: |
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