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ActiveMQ example source code file (DurableSubscriptionSelectorTest.java)

This example ActiveMQ source code file (DurableSubscriptionSelectorTest.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

activemqconnection, activemqconnection, activemqconnectionfactory, activemqtopic, brokerservice, brokerservice, exception, exception, jmsexception, management, message, message, objectname, override, session

The ActiveMQ DurableSubscriptionSelectorTest.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.usecases;

import java.lang.management.ManagementFactory;

import javax.jms.JMSException;
import javax.jms.Message;
import javax.jms.MessageListener;
import javax.jms.MessageProducer;
import javax.jms.Session;
import javax.jms.TopicSubscriber;
import javax.management.MBeanServer;
import javax.management.ObjectName;

import junit.framework.Test;
import org.apache.activemq.ActiveMQConnection;
import org.apache.activemq.ActiveMQConnectionFactory;
import org.apache.activemq.broker.BrokerService;
import org.apache.activemq.command.ActiveMQTopic;
import org.apache.activemq.store.PersistenceAdapter;
import org.apache.activemq.store.jdbc.JDBCPersistenceAdapter;
import org.apache.activemq.util.Wait;

public class DurableSubscriptionSelectorTest extends org.apache.activemq.TestSupport {

    MBeanServer mbs;
    BrokerService broker = null;
    ActiveMQTopic topic;

    ActiveMQConnection consumerConnection = null, producerConnection = null;
    Session producerSession;
    MessageProducer producer;

    private int received = 0;

    public static Test suite() {
        return suite(DurableSubscriptionSelectorTest.class);
    }

    public void initCombosForTestSubscription() throws Exception {
        this.addCombinationValues("defaultPersistenceAdapter", PersistenceAdapterChoice.values());
    }

    public void testSubscription() throws Exception {
        openConsumer();
        for (int i = 0; i < 4000; i++) {
            sendMessage(false);
        }
        Thread.sleep(1000);

        assertEquals("Invalid message received.", 0, received);

        closeProducer();
        closeConsumer();
        stopBroker();

        startBroker(false);
        openConsumer();

        sendMessage(true);

        Wait.waitFor(new Wait.Condition() { public boolean isSatisified() { return received >= 1;} }, 10000);

        assertEquals("Message is not recieved.", 1, received);

        sendMessage(true);
        Thread.sleep(100);

        assertEquals("Message is not recieved.", 2, received);
    }

    private void openConsumer() throws Exception {
        consumerConnection = (ActiveMQConnection) createConnection();
        consumerConnection.setClientID("cliID");
        consumerConnection.start();
        Session session = consumerConnection.createSession(false, Session.AUTO_ACKNOWLEDGE);
        TopicSubscriber subscriber = session.createDurableSubscriber(topic, "subName", "filter=true", false);

        subscriber.setMessageListener(new MessageListener() {
            public void onMessage(Message message) {
                received++;
            }
        });
    }

    private void closeConsumer() throws JMSException {
        if (consumerConnection != null)
            consumerConnection.close();
        consumerConnection = null;
    }

    private void sendMessage(boolean filter) throws Exception {
        if (producerConnection == null) {
            producerConnection = (ActiveMQConnection) createConnection();
            producerConnection.start();
            producerSession = producerConnection.createSession(false, Session.AUTO_ACKNOWLEDGE);
            producer = producerSession.createProducer(topic);
        }

        Message message = producerSession.createMessage();
        message.setBooleanProperty("filter", filter);
        producer.send(message);
    }

    private void closeProducer() throws JMSException {
        if (producerConnection != null)
            producerConnection.close();
        producerConnection = null;
    }

    private int getPendingQueueSize() throws Exception {
        ObjectName[] subs = broker.getAdminView().getDurableTopicSubscribers();
        for (ObjectName sub: subs) {
            if ("cliID".equals(mbs.getAttribute(sub, "ClientId"))) {
                Integer size = (Integer) mbs.getAttribute(sub, "PendingQueueSize");
                return size != null ? size : 0;
            }
        }
        assertTrue(false);
        return -1;
    }

    private void startBroker(boolean deleteMessages) throws Exception {
        broker = new BrokerService();
        broker.setBrokerName("test-broker");
        
        if (deleteMessages) {
            broker.setDeleteAllMessagesOnStartup(true);
        }
        setDefaultPersistenceAdapter(broker);

        if (broker.getPersistenceAdapter() instanceof JDBCPersistenceAdapter) {
            ((JDBCPersistenceAdapter)broker.getPersistenceAdapter()).setMaxRows(5000);    
        }
        broker.start();
    }

    private void stopBroker() throws Exception {
        if (broker != null)
            broker.stop();
        broker = null;
    }
    
    protected ActiveMQConnectionFactory createConnectionFactory() throws Exception {
        return new ActiveMQConnectionFactory("vm://test-broker?jms.watchTopicAdvisories=false&waitForStart=5000&create=false");
    }

    @Override
    protected void setUp() throws Exception {
        super.setUp();

        startBroker(true);
        topic = (ActiveMQTopic) createDestination();
        mbs = ManagementFactory.getPlatformMBeanServer();
    }

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

Other ActiveMQ examples (source code examples)

Here is a short list of links related to this ActiveMQ DurableSubscriptionSelectorTest.java source code file:

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