ActiveMQ example source code file (AdvisoryTempDestinationTests.java)

This example ActiveMQ source code file (AdvisoryTempDestinationTests.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

activemqmessage, brokerservice, bytesmessage, exception, exception, message, messageconsumer, messageconsumer, messageproducer, policyentry, session, session, topic, topic, util

The ActiveMQ AdvisoryTempDestinationTests.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.advisory;

import junit.framework.TestCase;
import org.apache.activemq.ActiveMQConnection;
import org.apache.activemq.ActiveMQConnectionFactory;
import org.apache.activemq.broker.BrokerService;
import org.apache.activemq.broker.region.policy.ConstantPendingMessageLimitStrategy;
import org.apache.activemq.broker.region.policy.PolicyEntry;
import org.apache.activemq.broker.region.policy.PolicyMap;
import org.apache.activemq.command.ActiveMQDestination;
import org.apache.activemq.command.ActiveMQMessage;

import javax.jms.*;
import java.util.ArrayList;
import java.util.List;

public class AdvisoryTempDestinationTests extends TestCase {

    protected static final int MESSAGE_COUNT = 2000;
    protected BrokerService broker;
    protected Connection connection;
    protected String bindAddress = ActiveMQConnectionFactory.DEFAULT_BROKER_BIND_URL;
    protected int topicCount;


    public void testNoSlowConsumerAdvisory() throws Exception {
        Session s = connection.createSession(false, Session.AUTO_ACKNOWLEDGE);
        TemporaryQueue queue = s.createTemporaryQueue();
        MessageConsumer consumer = s.createConsumer(queue);
        consumer.setMessageListener(new MessageListener() {
            public void onMessage(Message message) {
            }
        });
        Topic advisoryTopic = AdvisorySupport
                .getSlowConsumerAdvisoryTopic((ActiveMQDestination) queue);
        s = connection.createSession(false, Session.AUTO_ACKNOWLEDGE);
        MessageConsumer advisoryConsumer = s.createConsumer(advisoryTopic);
        // start throwing messages at the consumer
        MessageProducer producer = s.createProducer(queue);
        for (int i = 0; i < MESSAGE_COUNT; i++) {
            BytesMessage m = s.createBytesMessage();
            m.writeBytes(new byte[1024]);
            producer.send(m);
        }
        Message msg = advisoryConsumer.receive(1000);
        assertNull(msg);
    }

    public void testSlowConsumerAdvisory() throws Exception {
        Session s = connection.createSession(false, Session.AUTO_ACKNOWLEDGE);
        TemporaryQueue queue = s.createTemporaryQueue();
        MessageConsumer consumer = s.createConsumer(queue);

        Topic advisoryTopic = AdvisorySupport
                .getSlowConsumerAdvisoryTopic((ActiveMQDestination) queue);
        s = connection.createSession(false, Session.AUTO_ACKNOWLEDGE);
        MessageConsumer advisoryConsumer = s.createConsumer(advisoryTopic);
        // start throwing messages at the consumer
        MessageProducer producer = s.createProducer(queue);
        for (int i = 0; i < MESSAGE_COUNT; i++) {
            BytesMessage m = s.createBytesMessage();
            m.writeBytes(new byte[1024]);
            producer.send(m);
        }
        Message msg = advisoryConsumer.receive(1000);
        assertNotNull(msg);
    }

    public void testMessageDeliveryAdvisory() throws Exception {
        Session s = connection.createSession(false, Session.AUTO_ACKNOWLEDGE);
        TemporaryQueue queue = s.createTemporaryQueue();
        MessageConsumer consumer = s.createConsumer(queue);

        Topic advisoryTopic = AdvisorySupport.getMessageDeliveredAdvisoryTopic((ActiveMQDestination) queue);
        MessageConsumer advisoryConsumer = s.createConsumer(advisoryTopic);
        //start throwing messages at the consumer
        MessageProducer producer = s.createProducer(queue);

        BytesMessage m = s.createBytesMessage();
        m.writeBytes(new byte[1024]);
        producer.send(m);

        Message msg = advisoryConsumer.receive(1000);
        assertNotNull(msg);
    }

    public void testTempMessageConsumedAdvisory() throws Exception {
        Session s = connection.createSession(false, Session.AUTO_ACKNOWLEDGE);
        TemporaryQueue queue = s.createTemporaryQueue();
        MessageConsumer consumer = s.createConsumer(queue);

        Topic advisoryTopic = AdvisorySupport.getMessageConsumedAdvisoryTopic((ActiveMQDestination) queue);
        MessageConsumer advisoryConsumer = s.createConsumer(advisoryTopic);
        //start throwing messages at the consumer
        MessageProducer producer = s.createProducer(queue);

        BytesMessage m = s.createBytesMessage();
        m.writeBytes(new byte[1024]);
        producer.send(m);
        String id = m.getJMSMessageID();
        Message msg = consumer.receive(1000);
        assertNotNull(msg);

        msg = advisoryConsumer.receive(1000);
        assertNotNull(msg);

        ActiveMQMessage message = (ActiveMQMessage) msg;
        ActiveMQMessage payload = (ActiveMQMessage) message.getDataStructure();
        String originalId = payload.getJMSMessageID();
        assertEquals(originalId, id);
    }

    public void testMessageExpiredAdvisory() throws Exception {
        Session s = connection.createSession(false, Session.AUTO_ACKNOWLEDGE);
        Queue queue = s.createQueue(getClass().getName());
        MessageConsumer consumer = s.createConsumer(queue);

        Topic advisoryTopic = AdvisorySupport.getExpiredMessageTopic((ActiveMQDestination) queue);
        MessageConsumer advisoryConsumer = s.createConsumer(advisoryTopic);
        //start throwing messages at the consumer
        MessageProducer producer = s.createProducer(queue);
        producer.setTimeToLive(1);
        for (int i = 0; i < MESSAGE_COUNT; i++) {
            BytesMessage m = s.createBytesMessage();
            m.writeBytes(new byte[1024]);
            producer.send(m);
        }

        Message msg = advisoryConsumer.receive(2000);
        assertNotNull(msg);
    }

    protected void setUp() throws Exception {
        if (broker == null) {
            broker = createBroker();
        }
        ConnectionFactory factory = createConnectionFactory();
        connection = factory.createConnection();
        connection.start();
        super.setUp();
    }

    protected void tearDown() throws Exception {
        super.tearDown();
        connection.close();
        if (broker != null) {
            broker.stop();
        }
    }

    protected ActiveMQConnectionFactory createConnectionFactory()
            throws Exception {
        ActiveMQConnectionFactory cf = new ActiveMQConnectionFactory(
                ActiveMQConnection.DEFAULT_BROKER_URL);
        return cf;
    }

    protected BrokerService createBroker() throws Exception {
        BrokerService answer = new BrokerService();
        configureBroker(answer);
        answer.start();
        return answer;
    }

    protected void configureBroker(BrokerService answer) throws Exception {
        answer.setPersistent(false);
        ConstantPendingMessageLimitStrategy strategy = new ConstantPendingMessageLimitStrategy();
        strategy.setLimit(10);
        PolicyEntry tempQueueEntry = createPolicyEntry(strategy);
        tempQueueEntry.setTempQueue(true);
        PolicyEntry tempTopicEntry = createPolicyEntry(strategy);
        tempTopicEntry.setTempTopic(true);

        PolicyMap pMap = new PolicyMap();
        final List<PolicyEntry> policyEntries = new ArrayList();
        policyEntries.add(tempQueueEntry);
        policyEntries.add(tempTopicEntry);
        pMap.setPolicyEntries(policyEntries);

        answer.setDestinationPolicy(pMap);
        answer.addConnector(bindAddress);
        answer.setDeleteAllMessagesOnStartup(true);
    }

    private PolicyEntry createPolicyEntry(ConstantPendingMessageLimitStrategy strategy) {
        PolicyEntry policy = new PolicyEntry();
        policy.setAdvisdoryForFastProducers(true);
        policy.setAdvisoryForConsumed(true);
        policy.setAdvisoryForDelivery(true);
        policy.setAdvisoryForDiscardingMessages(true);
        policy.setAdvisoryForSlowConsumers(true);
        policy.setAdvisoryWhenFull(true);
        policy.setProducerFlowControl(false);
        policy.setPendingMessageLimitStrategy(strategy);

        return policy;
    }
}