/**
* 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.jmx;
import javax.jms.Connection;
import javax.jms.Destination;
import javax.jms.JMSException;
import javax.jms.Message;
import javax.jms.MessageConsumer;
import javax.jms.MessageProducer;
import javax.jms.Session;
import javax.jms.TextMessage;
import javax.management.ObjectName;
import org.apache.activemq.ActiveMQConnectionFactory;
import org.apache.activemq.broker.BrokerService;
import org.apache.activemq.broker.jmx.BrokerViewMBean;
import org.apache.activemq.command.ActiveMQQueue;
import org.junit.After;
import org.junit.Before;
import org.junit.Test;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import java.util.concurrent.TimeUnit;
import static org.junit.Assert.assertTrue;
/**
* @author <a href="http://tmielke.blogspot.com">Torsten Mielke</a>
*/
public class TotalMessageCountTest {
private static final Logger LOG = LoggerFactory.getLogger(TotalMessageCountTest.class);
private BrokerService brokerService;
private final String TESTQUEUE = "testQueue";
private ActiveMQConnectionFactory connectionFactory;
private final String BROKER_ADDRESS = "tcp://localhost:0";
private final ActiveMQQueue queue = new ActiveMQQueue(TESTQUEUE);
private String connectionUri;
@Before
public void setUp() throws Exception {
startBroker(true);
}
@After
public void tearDown() throws Exception {
brokerService.stop();
brokerService.waitUntilStopped();
}
@Test
public void testNegativeTotalMessageCount() throws Exception {
LOG.info("Running test testNegativeTotalMessageCount()");
// send one msg first
sendMessage();
// restart the broker
restartBroker();
// receive one msg
receiveMessage();
// assert TotalMessageCount JMX property > 0
long totalMessageCount = getTotalMessageCount();
if (totalMessageCount < 0 ) {
LOG.error("Unexpected negative TotalMessageCount: " + totalMessageCount);
} else {
LOG.info("TotalMessageCount: " + totalMessageCount);
}
assertTrue("Non negative TotalMessageCount " + totalMessageCount, totalMessageCount > -1);
LOG.info("Test testNegativeTotalMessageCount() completed.");
}
/**
* Sends one persistent TextMessage to the TESTQUEUE.
* Initializes a new JMS connection, session and consumer and closes them
* after use.
* @throws JMSException on failure
*/
private void sendMessage() throws JMSException {
Connection conn = connectionFactory.createConnection();
try {
conn.start();
Session session = conn.createSession(false, Session.AUTO_ACKNOWLEDGE);
Destination queue = session.createQueue(TESTQUEUE);
TextMessage msg = session.createTextMessage("This is a message.");
MessageProducer producer = session.createProducer(queue);
producer.send(queue, msg);
LOG.info("Message sent to " + TESTQUEUE);
} finally {
conn.close();
}
}
/**
* Receives a single JMS message from the broker.
* Initializes a new JMS connection, session and consumer and closes them
* after use.
* @return
* @throws JMSException
*/
private Message receiveMessage() throws JMSException {
Connection conn = connectionFactory.createConnection();
Message msg = null;
try {
conn.start();
Session session = conn.createSession(false, Session.AUTO_ACKNOWLEDGE);
Destination queue = session.createQueue(TESTQUEUE);
MessageConsumer consumer = session.createConsumer(queue);
msg = consumer.receive(TimeUnit.SECONDS.toMillis(10));
if (msg != null) {
LOG.info("Message received from " + TESTQUEUE);
}
consumer.close();
session.close();
} finally {
conn.close();
}
return msg;
}
/**
* restarts the broker
*
* @return true if restart was successful
* @throws Exception if restart failed.
*/
private boolean restartBroker() throws Exception {
brokerService.stop();
brokerService.waitUntilStopped();
return startBroker(false);
}
/**
* starts the broker
*
* @return true if start was successful
* @throws Exception if restart failed.
*/
private boolean startBroker(boolean deleteMessagesOnStartup) throws Exception {
brokerService = new BrokerService();
brokerService.setPersistent(true);
brokerService.setDeleteAllMessagesOnStartup(deleteMessagesOnStartup);
brokerService.setUseJmx(true);
connectionUri = brokerService.addConnector(BROKER_ADDRESS).getPublishableConnectString();
brokerService.start();
connectionFactory = new ActiveMQConnectionFactory(connectionUri);
LOG.info("Broker started.");
return true;
}
/**
* Reads the brokers TotalMessageCount property on the JMX Broker MBean.
* @return the total message count for the broker
* @throws Exception if the JMX operation fails
*/
private long getTotalMessageCount() throws Exception {
ObjectName brokerViewMBeanName = new ObjectName("org.apache.activemq:type=Broker,brokerName=localhost");
BrokerViewMBean brokerMBean = (BrokerViewMBean)
brokerService.getManagementContext().newProxyInstance(brokerViewMBeanName, BrokerViewMBean.class, true);
LOG.debug("Broker TotalMessageCount: " + brokerMBean.getTotalMessageCount());
return brokerMBean.getTotalMessageCount();
}
}