ActiveMQ example source code file (QueueConsumerPriorityTest.java)

This example ActiveMQ source code file (QueueConsumerPriorityTest.java) is included in the DevDaily.com "Java Source Code Warehouse" project. The intent of this project is to help you "Learn Java by Example" ^TM.

Java - ActiveMQ tags/keywords

activemqqueue, activemqqueue, connection, connection, exception, jmsexception, messageconsumer, messageproducer, queueconsumerprioritytest, session, session, string, string, testcase

The ActiveMQ QueueConsumerPriorityTest.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;

import javax.jms.Connection;
import javax.jms.ConnectionFactory;
import javax.jms.JMSException;
import javax.jms.Message;
import javax.jms.MessageConsumer;
import javax.jms.MessageProducer;
import javax.jms.Session;

import junit.framework.Assert;
import junit.framework.TestCase;
import org.apache.activemq.command.ActiveMQQueue;

public class QueueConsumerPriorityTest extends TestCase {

    private static final String VM_BROKER_URL = "vm://localhost?broker.persistent=false&broker.useJmx=true";

    public QueueConsumerPriorityTest(String name) {
        super(name);
    }

    protected void setUp() throws Exception {
        super.setUp();
    }

    protected void tearDown() throws Exception {
        super.tearDown();
    }

    private Connection createConnection(final boolean start) throws JMSException {
        ConnectionFactory cf = new ActiveMQConnectionFactory(VM_BROKER_URL);
        Connection conn = cf.createConnection();
        if (start) {
            conn.start();
        }
        return conn;
    }

    public void testQueueConsumerPriority() throws JMSException, InterruptedException {
        Connection conn = createConnection(true);

        Session consumerLowPriority = null;
        Session consumerHighPriority = null;
        Session senderSession = null;

        try {

            consumerLowPriority = conn.createSession(false, Session.AUTO_ACKNOWLEDGE);
            consumerHighPriority = conn.createSession(false, Session.AUTO_ACKNOWLEDGE);
            senderSession = conn.createSession(false, Session.AUTO_ACKNOWLEDGE);
            String queueName = getClass().getName();
            ActiveMQQueue low = new ActiveMQQueue(queueName+"?consumer.priority=1");
            MessageConsumer lowConsumer = consumerLowPriority.createConsumer(low);

            ActiveMQQueue high = new ActiveMQQueue(queueName+"?consumer.priority=2");
            MessageConsumer highConsumer = consumerLowPriority.createConsumer(high);

            ActiveMQQueue senderQueue = new ActiveMQQueue(queueName);

            MessageProducer producer = senderSession.createProducer(senderQueue);

            Message msg = senderSession.createTextMessage("test");
            for (int i =0; i< 10000;i++) {
                producer.send(msg);
                Assert.assertNotNull("null on iteration: " + i, highConsumer.receive(500));
            }
            Assert.assertNull(lowConsumer.receive(2000));
            
           
        } finally {
            conn.close();
        }

    }


}