ActiveMQ example source code file (JDBCCommitExceptionTest.java)

This example ActiveMQ source code file (JDBCCommitExceptionTest.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, brokenpersistenceadapter, brokerservice, brokerservice, destination, embeddeddatasource, exception, exception, io, jdbc, messages, msg, session, session, sql, test, test, util

The ActiveMQ JDBCCommitExceptionTest.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.jdbc;

import java.io.IOException;
import java.sql.PreparedStatement;
import java.sql.ResultSet;
import java.util.Properties;

import javax.jms.DeliveryMode;
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 org.apache.activemq.ActiveMQConnectionFactory;
import org.apache.activemq.broker.BrokerService;
import org.apache.activemq.broker.ConnectionContext;
import org.apache.activemq.openwire.OpenWireFormat;
import org.apache.activemq.store.jdbc.adapter.DefaultJDBCAdapter;
import org.apache.activemq.util.ByteSequence;
import org.apache.activemq.wireformat.WireFormat;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.apache.derby.jdbc.EmbeddedDataSource;

import junit.framework.TestCase;

// https://issues.apache.org/activemq/browse/AMQ-2880
public class JDBCCommitExceptionTest extends TestCase {

    private static final Logger LOG = LoggerFactory.getLogger(JDBCCommitExceptionTest.class);

    protected static final int messagesExpected = 10;
    protected ActiveMQConnectionFactory factory = new ActiveMQConnectionFactory(
            "tcp://localhost:61616?jms.prefetchPolicy.all=0&jms.redeliveryPolicy.maximumRedeliveries="+messagesExpected); 
    protected BrokerService broker;
    protected EmbeddedDataSource dataSource;
    protected java.sql.Connection dbConnection;
    protected BrokenPersistenceAdapter jdbc;


    public void setUp() throws Exception {
        broker = createBroker();
        broker.start();
    }


    public void tearDown() throws Exception {
        broker.stop();
    }

    public void testSqlException() throws Exception {
        doTestSqlException();
    }

    public void doTestSqlException() throws Exception {
        sendMessages(messagesExpected);
        int messagesReceived = receiveMessages(messagesExpected);

        dumpMessages();

        assertEquals("Messages expected doesn't equal messages received", messagesExpected, messagesReceived);

        broker.stop();
    }

     protected void dumpMessages() throws Exception {
        WireFormat wireFormat = new OpenWireFormat();
        java.sql.Connection conn = ((JDBCPersistenceAdapter) broker.getPersistenceAdapter()).getDataSource().getConnection();
        PreparedStatement statement = conn.prepareStatement("SELECT ID, MSG FROM ACTIVEMQ_MSGS");    
        ResultSet result = statement.executeQuery();
        LOG.info("Messages left in broker after test");
        while(result.next()) {
            long id = result.getLong(1);
            org.apache.activemq.command.Message message = (org.apache.activemq.command.Message)wireFormat.unmarshal(new ByteSequence(result.getBytes(2)));
            LOG.info("id: " + id + ", message SeqId: " + message.getMessageId().getBrokerSequenceId() + ", MSG: " + message);
        }
        statement.close();
        conn.close();
    }

    protected int receiveMessages(int messagesExpected) throws Exception {
        javax.jms.Connection connection = factory.createConnection();
        connection.start();
        Session session = connection.createSession(true, Session.SESSION_TRANSACTED);

        jdbc.setShouldBreak(true);

        // first try and receive these messages, they'll continually fail
        receiveMessages(messagesExpected, session);

        jdbc.setShouldBreak(false);

        // now that the store is sane, try and get all the messages sent
        return receiveMessages(messagesExpected, session);
    }

    protected int receiveMessages(int messagesExpected, Session session) throws Exception {
        int messagesReceived = 0;

        for (int i=0; i<messagesExpected; i++) {
            Destination destination = session.createQueue("TEST");
            MessageConsumer consumer = session.createConsumer(destination);
            Message message = null;
            try {
                LOG.debug("Receiving message " + (messagesReceived+1) + " of " + messagesExpected);
                message = consumer.receive(2000);
                LOG.info("Received : " + message);
                if (message != null) {
                    session.commit();
                    messagesReceived++;
                }
            } catch (Exception e) {
                LOG.debug("Caught exception " + e);
                session.rollback();
            } finally {
                if (consumer != null) {
                    consumer.close();
                }
            }
        }
        return messagesReceived;
    }

    protected void sendMessages(int messagesExpected) throws Exception {
        javax.jms.Connection connection = factory.createConnection();
        connection.start();
        Session session = connection.createSession(false, Session.AUTO_ACKNOWLEDGE);
        Destination destination = session.createQueue("TEST");        
        MessageProducer producer = session.createProducer(destination);
        producer.setDeliveryMode(DeliveryMode.PERSISTENT);

        for (int i=0; i<messagesExpected; i++) {
            LOG.debug("Sending message " + (i+1) + " of " + messagesExpected);
            producer.send(session.createTextMessage("test message " + (i+1)));
        }
    }

    protected BrokerService createBroker() throws Exception {

        BrokerService broker = new BrokerService();
        jdbc = new BrokenPersistenceAdapter();

        dataSource = new EmbeddedDataSource();
        dataSource.setDatabaseName("target/derbyDb");
        dataSource.setCreateDatabase("create");

        jdbc.setDataSource(dataSource);
        jdbc.setUseDatabaseLock(false);
        jdbc.deleteAllMessages();

        broker.setPersistenceAdapter(jdbc);
        broker.setPersistent(true);
        broker.addConnector("tcp://localhost:61616");

        return broker;
    }

}