test case that verifies setting a listener from onMessage

git-svn-id: https://svn.apache.org/repos/asf/activemq/trunk@707609 13f79535-47bb-0310-9956-ffa450edef68
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Gary Tully 2008-10-24 12:03:23 +00:00
parent 8b34eacc26
commit f3e603959a
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/**
* 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;
import java.util.Vector;
import java.util.concurrent.CountDownLatch;
import java.util.concurrent.TimeUnit;
import java.util.concurrent.atomic.AtomicBoolean;
import javax.jms.Connection;
import javax.jms.DeliveryMode;
import javax.jms.Destination;
import javax.jms.JMSException;
import javax.jms.Message;
import javax.jms.MessageConsumer;
import javax.jms.MessageListener;
import javax.jms.MessageProducer;
import javax.jms.Session;
import javax.jms.TextMessage;
import junit.framework.TestCase;
public class JmsConsumerResetActiveListenerTest extends TestCase {
private Connection connection;
private ActiveMQConnectionFactory factory;
protected void setUp() throws Exception {
factory = new ActiveMQConnectionFactory("vm://localhost?broker.persistent=false");
connection = factory.createConnection();
}
protected void tearDown() throws Exception {
if (connection != null) {
connection.close();
connection = null;
}
}
/**
* verify the (undefined by spec) behaviour of setting a listener while receiving a message.
*
* @throws Exception
*/
public void testSetListenerFromListener() throws Exception {
Session session = connection.createSession(false, Session.CLIENT_ACKNOWLEDGE);
Destination dest = session.createQueue("Queue-" + getName());
final MessageConsumer consumer = session.createConsumer(dest);
final CountDownLatch latch = new CountDownLatch(2);
final AtomicBoolean first = new AtomicBoolean(true);
final Vector<Object> results = new Vector<Object>();
consumer.setMessageListener(new MessageListener() {
public void onMessage(Message message) {
if (first.compareAndSet(true, false)) {
try {
consumer.setMessageListener(this);
results.add(message);
} catch (JMSException e) {
results.add(e);
}
} else {
results.add(message);
}
latch.countDown();
}
});
connection.start();
MessageProducer producer = session.createProducer(dest);
producer.setDeliveryMode(DeliveryMode.NON_PERSISTENT);
producer.send(session.createTextMessage("First"));
producer.send(session.createTextMessage("Second"));
assertTrue("we did not timeout", latch.await(5, TimeUnit.SECONDS));
assertEquals("we have a result", 2, results.size());
Object result = results.get(0);
assertTrue(result instanceof TextMessage);
assertEquals("result is first", "First", ((TextMessage)result).getText());
result = results.get(1);
assertTrue(result instanceof TextMessage);
assertEquals("result is first", "Second", ((TextMessage)result).getText());
}
/**
* and a listener on a new consumer, just in case.
*
* @throws Exception
*/
public void testNewConsumerSetListenerFromListener() throws Exception {
final Session session = connection.createSession(false, Session.CLIENT_ACKNOWLEDGE);
final Destination dest = session.createQueue("Queue-" + getName());
final MessageConsumer consumer = session.createConsumer(dest);
final CountDownLatch latch = new CountDownLatch(2);
final AtomicBoolean first = new AtomicBoolean(true);
final Vector<Object> results = new Vector<Object>();
consumer.setMessageListener(new MessageListener() {
public void onMessage(Message message) {
if (first.compareAndSet(true, false)) {
try {
MessageConsumer anotherConsumer = session.createConsumer(dest);
anotherConsumer.setMessageListener(this);
results.add(message);
} catch (JMSException e) {
results.add(e);
}
} else {
results.add(message);
}
latch.countDown();
}
});
connection.start();
MessageProducer producer = session.createProducer(dest);
producer.setDeliveryMode(DeliveryMode.NON_PERSISTENT);
producer.send(session.createTextMessage("First"));
producer.send(session.createTextMessage("Second"));
assertTrue("we did not timeout", latch.await(5, TimeUnit.SECONDS));
assertEquals("we have a result", 2, results.size());
Object result = results.get(0);
assertTrue(result instanceof TextMessage);
assertEquals("result is first", "First", ((TextMessage)result).getText());
result = results.get(1);
assertTrue(result instanceof TextMessage);
assertEquals("result is first", "Second", ((TextMessage)result).getText());
}
}