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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.bugs;
import static org.junit.Assert.assertEquals;
import java.util.Iterator;
import java.util.LinkedList;
import java.util.List;
import javax.jms.ConnectionConsumer;
import javax.jms.JMSException;
import javax.jms.Message;
import javax.jms.MessageListener;
import javax.jms.ServerSession;
import javax.jms.ServerSessionPool;
import javax.jms.Session;
import javax.jms.TopicConnection;
import javax.jms.TopicPublisher;
import javax.jms.TopicSession;
import javax.jms.TopicSubscriber;
import org.apache.activemq.ActiveMQConnectionFactory;
import org.apache.activemq.broker.BrokerService;
import org.apache.activemq.command.ActiveMQTopic;
import org.junit.After;
import org.junit.Before;
import org.junit.Test;
public class AMQ3961Test {
private static BrokerService brokerService;
private static String BROKER_ADDRESS = "tcp://localhost:0";
private ActiveMQConnectionFactory connectionFactory;
private String connectionUri;
@Before
public void setUp() throws Exception {
brokerService = new BrokerService();
brokerService.setPersistent(false);
brokerService.setUseJmx(true);
brokerService.setDeleteAllMessagesOnStartup(true);
connectionUri = brokerService.addConnector(BROKER_ADDRESS).getPublishableConnectString();
brokerService.start();
brokerService.waitUntilStarted();
connectionFactory = new ActiveMQConnectionFactory(connectionUri);
}
@After
public void tearDown() throws Exception {
brokerService.stop();
brokerService.waitUntilStopped();
}
public class TestServerSessionPool implements ServerSessionPool {
private final TopicConnection connection;
public TestServerSessionPool(final TopicConnection connection) {
this.connection = connection;
}
@Override
public ServerSession getServerSession() throws JMSException {
final TopicSession topicSession = connection.createTopicSession(true, Session.AUTO_ACKNOWLEDGE);
return new TestServerSession(topicSession);
}
}
public class TestServerSession implements ServerSession, MessageListener {
private final TopicSession session;
public TestServerSession(final TopicSession session) throws JMSException {
this.session = session;
session.setMessageListener(this);
}
@Override
public Session getSession() throws JMSException {
return session;
}
@Override
public void start() throws JMSException {
session.run();
}
@Override
public void onMessage(final Message message) {
synchronized (processedSessions) {
processedSessions.add(this);
}
}
}
public static final int MESSAGE_COUNT = 16;
private final List<TestServerSession> processedSessions = new LinkedList<TestServerSession>();
private final List<TestServerSession> committedSessions = new LinkedList<TestServerSession>();
@Test
public void testPrefetchInDurableSubscription() throws Exception {
final ActiveMQTopic topic = new ActiveMQTopic("TestTopic");
final TopicConnection initialSubConnection = connectionFactory.createTopicConnection();
initialSubConnection.setClientID("TestClient");
initialSubConnection.start();
final TopicSession initialSubSession = initialSubConnection.createTopicSession(false, Session.CLIENT_ACKNOWLEDGE);
final TopicSubscriber initialSubscriber = initialSubSession.createDurableSubscriber(topic, "TestSubscriber");
initialSubscriber.close();
initialSubSession.close();
initialSubConnection.close();
final TopicConnection publisherConnection = connectionFactory.createTopicConnection();
publisherConnection.start();
final TopicSession publisherSession = publisherConnection.createTopicSession(false, Session.AUTO_ACKNOWLEDGE);
final TopicPublisher publisher = publisherSession.createPublisher(topic);
for (int i = 1; i <= MESSAGE_COUNT; i++) {
final Message msg = publisherSession.createTextMessage("Message #" + i);
publisher.publish(msg);
}
publisher.close();
publisherSession.close();
publisherConnection.close();
final TopicConnection connection = connectionFactory.createTopicConnection();
connection.setClientID("TestClient");
connection.start();
final TestServerSessionPool pool = new TestServerSessionPool(connection);
final ConnectionConsumer connectionConsumer = connection.createDurableConnectionConsumer(topic, "TestSubscriber", null, pool, 1);
while (true) {
int lastMsgCount = 0;
int msgCount = 0;
do {
lastMsgCount = msgCount;
Thread.sleep(200L);
synchronized (processedSessions) {
msgCount = processedSessions.size();
}
} while (lastMsgCount < msgCount);
if (lastMsgCount == 0) {
break;
}
final LinkedList<TestServerSession> collected;
synchronized (processedSessions) {
collected = new LinkedList<TestServerSession>(processedSessions);
processedSessions.clear();
}
final Iterator<TestServerSession> sessions = collected.iterator();
while (sessions.hasNext()) {
final TestServerSession session = sessions.next();
committedSessions.add(session);
session.getSession().commit();
session.getSession().close();
}
}
connectionConsumer.close();
final TopicSession finalSession = connection.createTopicSession(false, Session.AUTO_ACKNOWLEDGE);
finalSession.unsubscribe("TestSubscriber");
finalSession.close();
connection.close();
assertEquals(MESSAGE_COUNT, committedSessions.size());
}
}