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ActiveMQ example source code file (VirtualTopicPubSubTest.java)
This example ActiveMQ source code file (VirtualTopicPubSubTest.java) is included in the DevDaily.com
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The ActiveMQ VirtualTopicPubSubTest.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.broker.virtual;
import java.util.Vector;
import javax.jms.Connection;
import javax.jms.JMSException;
import javax.jms.Message;
import javax.jms.MessageConsumer;
import javax.jms.MessageProducer;
import javax.jms.Session;
import junit.framework.Test;
import org.apache.activemq.EmbeddedBrokerTestSupport;
import org.apache.activemq.command.ActiveMQQueue;
import org.apache.activemq.command.ActiveMQTopic;
import org.apache.activemq.spring.ConsumerBean;
/**
*
*
*/
public class VirtualTopicPubSubTest extends EmbeddedBrokerTestSupport {
private Vector<Connection> connections = new Vector();
public int ackMode = Session.AUTO_ACKNOWLEDGE;
public static Test suite() {
return suite(VirtualTopicPubSubTest.class);
}
public void initCombosForTestVirtualTopicCreation() {
addCombinationValues("ackMode", new Object[] {new Integer(Session.AUTO_ACKNOWLEDGE), new Integer(Session.CLIENT_ACKNOWLEDGE) });
}
private boolean doneTwice = false;
public void testVirtualTopicCreation() throws Exception {
doTestVirtualTopicCreation(10);
}
public void doTestVirtualTopicCreation(int total) throws Exception {
ConsumerBean messageList = new ConsumerBean() {
public synchronized void onMessage(Message message) {
super.onMessage(message);
if (ackMode == Session.CLIENT_ACKNOWLEDGE) {
try {
message.acknowledge();
} catch (JMSException e) {
e.printStackTrace();
}
}
}
};
messageList.setVerbose(true);
String queueAName = getVirtualTopicConsumerName();
// create consumer 'cluster'
ActiveMQQueue queue1 = new ActiveMQQueue(queueAName);
ActiveMQQueue queue2 = new ActiveMQQueue(queueAName);
Session session = createStartAndTrackConnection().createSession(false, ackMode);
MessageConsumer c1 = session.createConsumer(queue1);
session = createStartAndTrackConnection().createSession(false, ackMode);
MessageConsumer c2 = session.createConsumer(queue2);
c1.setMessageListener(messageList);
c2.setMessageListener(messageList);
// create topic producer
Session producerSession = createStartAndTrackConnection().createSession(false, ackMode);
MessageProducer producer = producerSession.createProducer(new ActiveMQTopic(getVirtualTopicName()));
assertNotNull(producer);
for (int i = 0; i < total; i++) {
producer.send(producerSession.createTextMessage("message: " + i));
}
messageList.assertMessagesArrived(total);
// do twice so we confirm messages do not get redelivered after client acknowledgement
if( doneTwice == false ) {
doneTwice = true;
doTestVirtualTopicCreation(0);
}
}
private Connection createStartAndTrackConnection() throws Exception {
Connection connection = createConnection();
connection.start();
connections.add(connection);
return connection;
}
protected String getVirtualTopicName() {
return "VirtualTopic.TEST";
}
protected String getVirtualTopicConsumerName() {
return "Consumer.A.VirtualTopic.TEST";
}
protected void tearDown() throws Exception {
for (Connection connection: connections) {
connection.close();
}
super.tearDown();
}
}
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