ActiveMQ example source code file (KahaDBVersionTest.java)

This example ActiveMQ source code file (KahaDBVersionTest.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

activemqconnectionfactory, brokerservice, brokerservice, connection, exception, exception, file, file, io, kahadbpersistenceadapter, message, messageconsumer, session, textmessage, textmessage

The ActiveMQ KahaDBVersionTest.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.store.kahadb;

import junit.framework.TestCase;
import org.apache.activemq.broker.BrokerService;
import org.apache.activemq.ActiveMQConnectionFactory;
import org.apache.activemq.command.ActiveMQQueue;
import org.apache.activemq.util.IOHelper;

import javax.jms.*;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import java.io.File;
import java.io.IOException;
import java.io.RandomAccessFile;
import java.io.FileNotFoundException;

/**
 * @author chirino
 */
public class KahaDBVersionTest extends TestCase {

    static final Logger LOG = LoggerFactory.getLogger(KahaDBVersionTest.class);
    final static File VERSION_1_DB= new File("src/test/resources/org/apache/activemq/store/kahadb/KahaDBVersion1");
    final static File VERSION_2_DB= new File("src/test/resources/org/apache/activemq/store/kahadb/KahaDBVersion2");

    BrokerService broker = null;

    protected BrokerService createBroker(KahaDBPersistenceAdapter kaha) throws Exception {

        broker = new BrokerService();
        broker.setUseJmx(false);
        broker.setPersistenceAdapter(kaha);
        broker.start();
        return broker;

    }

    protected void tearDown() throws Exception {
        if (broker != null) {
            broker.stop();
        }
    }
        
    public void XtestCreateStore() throws Exception {
        KahaDBPersistenceAdapter kaha = new KahaDBPersistenceAdapter();
        File dir = new File("src/test/resources/org/apache/activemq/store/kahadb/KahaDBVersionX");
        IOHelper.deleteFile(dir);
        kaha.setDirectory(dir);
        kaha.setJournalMaxFileLength(1024*1024);
        BrokerService broker = createBroker(kaha);
        ActiveMQConnectionFactory cf = new ActiveMQConnectionFactory("vm://localhost");        
        Connection connection = cf.createConnection();
        connection.setClientID("test");
        connection.start();
        producerSomeMessages(connection, 1000);
        connection.close();
        broker.stop();
    }

    private void producerSomeMessages(Connection connection, int numToSend) throws Exception {
        Session session = connection.createSession(false, Session.AUTO_ACKNOWLEDGE);
        Topic topic = session.createTopic("test.topic");
        Queue queue = session.createQueue("test.queue");
        MessageConsumer consumer = session.createDurableSubscriber(topic,"test");
        consumer.close();
        MessageProducer producer = session.createProducer(topic);
        producer.setPriority(9);
        for (int i =0; i < numToSend; i++) {
            Message msg = session.createTextMessage("test message:"+i);
            producer.send(msg);
        }
        LOG.info("sent "  + numToSend +" to topic");
        producer = session.createProducer(queue);
        for (int i =0; i < numToSend; i++) {
            Message msg = session.createTextMessage("test message:"+i);
            producer.send(msg);
        }
        LOG.info("sent " + numToSend +" to queue");
    }

    public void testVersion1Conversion() throws Exception{
          doConvertRestartCycle(VERSION_1_DB);
    }

    public void testVersion2Conversion() throws Exception{
          doConvertRestartCycle(VERSION_2_DB);
    }

    public void doConvertRestartCycle(File existingStore) throws Exception {

        File testDir = new File("target/activemq-data/kahadb/versionDB");
        IOHelper.deleteFile(testDir);
        IOHelper.copyFile(existingStore, testDir);
        final int numToSend = 1000;

        // on repeat store will be upgraded
        for (int repeats = 0; repeats < 3; repeats++) {
            KahaDBPersistenceAdapter kaha = new KahaDBPersistenceAdapter();
            kaha.setDirectory(testDir);
            kaha.setJournalMaxFileLength(1024 * 1024);
            BrokerService broker = createBroker(kaha);
            ActiveMQConnectionFactory cf = new ActiveMQConnectionFactory("vm://localhost");
            Connection connection = cf.createConnection();
            connection.setClientID("test");
            connection.start();
            Session session = connection.createSession(false, Session.AUTO_ACKNOWLEDGE);
            Topic topic = session.createTopic("test.topic");
            Queue queue = session.createQueue("test.queue");

            if (repeats > 0) {
                // upgraded store will be empty so generated some more messages
                producerSomeMessages(connection, numToSend);
            }

            MessageConsumer queueConsumer = session.createConsumer(queue);
            int count = 0;
            for (int i = 0; i < (repeats == 0 ? 1000 : numToSend); i++) {
                TextMessage msg = (TextMessage) queueConsumer.receive(10000);
                count++;
                //System.err.println(msg.getText());
                assertNotNull(msg);
            }
            LOG.info("Consumed " + count + " from queue");
            count = 0;
            MessageConsumer topicConsumer = session.createDurableSubscriber(topic, "test");
            for (int i = 0; i < (repeats == 0 ? 1000 : numToSend); i++) {
                TextMessage msg = (TextMessage) topicConsumer.receive(10000);
                count++;
                //System.err.println(msg.getText());
                assertNotNull(msg);
            }
            LOG.info("Consumed " + count + " from topic");
            connection.close();
            
            broker.stop();
        }
    }
}