/**
* 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 javax.jms.Connection;
import javax.jms.JMSException;
import javax.jms.Message;
import javax.jms.MessageConsumer;
import javax.jms.MessageListener;
import javax.jms.MessageProducer;
import javax.jms.Queue;
import javax.jms.Session;
import javax.jms.TextMessage;
import org.apache.activemq.command.ActiveMQQueue;
import org.apache.activemq.spring.SpringConsumer;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
/**
* @version $Revision: 564814 $
*/
public class ZeroPrefetchConsumerTest extends EmbeddedBrokerTestSupport {
private static final Log LOG = LogFactory.getLog(ZeroPrefetchConsumerTest.class);
protected Connection connection;
protected Queue queue;
public void testCannotUseMessageListener() throws Exception {
Session session = connection.createSession(false, Session.AUTO_ACKNOWLEDGE);
MessageConsumer consumer = session.createConsumer(queue);
MessageListener listener = new SpringConsumer();
try {
consumer.setMessageListener(listener);
fail("Should have thrown JMSException as we cannot use MessageListener with zero prefetch");
} catch (JMSException e) {
LOG.info("Received expected exception : " + e);
}
}
public void testPullConsumerWorks() throws Exception {
Session session = connection.createSession(false, Session.AUTO_ACKNOWLEDGE);
MessageProducer producer = session.createProducer(queue);
producer.send(session.createTextMessage("Hello World!"));
// now lets receive it
MessageConsumer consumer = session.createConsumer(queue);
Message answer = consumer.receive(5000);
assertNotNull("Should have received a message!", answer);
// check if method will return at all and will return a null
answer = consumer.receive(1);
assertNull("Should have not received a message!", answer);
answer = consumer.receiveNoWait();
assertNull("Should have not received a message!", answer);
}
public void testIdleConsumer() throws Exception {
doTestIdleConsumer(false);
}
public void testIdleConsumerTranscated() throws Exception {
doTestIdleConsumer(true);
}
private void doTestIdleConsumer(boolean transacted) throws Exception {
Session session = connection.createSession(transacted, Session.AUTO_ACKNOWLEDGE);
MessageProducer producer = session.createProducer(queue);
producer.send(session.createTextMessage("Msg1"));
producer.send(session.createTextMessage("Msg2"));
if (transacted) {
session.commit();
}
// now lets receive it
MessageConsumer consumer = session.createConsumer(queue);
session.createConsumer(queue);
TextMessage answer = (TextMessage)consumer.receive(5000);
assertEquals("Should have received a message!", answer.getText(), "Msg1");
if (transacted) {
session.commit();
}
// this call would return null if prefetchSize > 0
answer = (TextMessage)consumer.receive(5000);
assertEquals("Should have received a message!", answer.getText(), "Msg2");
if (transacted) {
session.commit();
}
answer = (TextMessage)consumer.receiveNoWait();
assertNull("Should have not received a message!", answer);
}
public void testRecvRecvCommit() throws Exception {
doTestRecvRecvCommit(false);
}
public void testRecvRecvCommitTranscated() throws Exception {
doTestRecvRecvCommit(true);
}
private void doTestRecvRecvCommit(boolean transacted) throws Exception {
Session session = connection.createSession(transacted, Session.AUTO_ACKNOWLEDGE);
MessageProducer producer = session.createProducer(queue);
producer.send(session.createTextMessage("Msg1"));
producer.send(session.createTextMessage("Msg2"));
if (transacted) {
session.commit();
}
// now lets receive it
MessageConsumer consumer = session.createConsumer(queue);
TextMessage answer = (TextMessage)consumer.receiveNoWait();
assertEquals("Should have received a message!", answer.getText(), "Msg1");
answer = (TextMessage)consumer.receiveNoWait();
assertEquals("Should have received a message!", answer.getText(), "Msg2");
if (transacted) {
session.commit();
}
answer = (TextMessage)consumer.receiveNoWait();
assertNull("Should have not received a message!", answer);
}
protected void setUp() throws Exception {
bindAddress = "tcp://localhost:61616";
super.setUp();
connection = createConnection();
connection.start();
queue = createQueue();
}
protected void tearDown() throws Exception {
connection.close();
super.tearDown();
}
protected Queue createQueue() {
return new ActiveMQQueue(getDestinationString() + "?consumer.prefetchSize=0");
}
}