ActiveMQ example source code file (JmsJdbcXATest.java)

This example ActiveMQ source code file (JmsJdbcXATest.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, exception, exception, from, jdbc, not, not, null, null, override, scp_input_messages, sql, sqlexception, stopping, threading, threads

The ActiveMQ JmsJdbcXATest.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.camel;

import java.sql.ResultSet;
import java.sql.SQLException;
import java.util.concurrent.Executors;
import java.util.concurrent.TimeUnit;
import javax.jms.Connection;
import javax.jms.MessageProducer;
import javax.jms.Session;
import javax.jms.TextMessage;
import org.apache.activemq.ActiveMQConnectionFactory;
import org.apache.activemq.broker.BrokerPlugin;
import org.apache.activemq.broker.BrokerPluginSupport;
import org.apache.activemq.broker.BrokerService;
import org.apache.activemq.broker.ConnectionContext;
import org.apache.activemq.command.ActiveMQQueue;
import org.apache.activemq.command.TransactionId;
import org.apache.activemq.util.Wait;
import org.apache.camel.spring.SpringTestSupport;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.enhydra.jdbc.pool.StandardXAPoolDataSource;
import org.springframework.context.support.AbstractXmlApplicationContext;
import org.springframework.context.support.ClassPathXmlApplicationContext;

/**
 *  shows broker heuristic rollback (no prepare memory), hence duplicate message delivery
 */
public class JmsJdbcXATest extends SpringTestSupport {
    private static final Logger LOG = LoggerFactory.getLogger(JmsJdbcXATest.class);
    BrokerService broker = null;

    public java.sql.Connection initDb() throws Exception {
        String createStatement =
                "CREATE TABLE SCP_INPUT_MESSAGES (" +
                        "id int NOT NULL GENERATED ALWAYS AS IDENTITY, " +
                        "messageId varchar(96) NOT NULL, " +
                        "messageCorrelationId varchar(96) NOT NULL, " +
                        "messageContent varchar(2048) NOT NULL, " +
                        "PRIMARY KEY (id) )";

        java.sql.Connection conn = null;
        StandardXAPoolDataSource pool = getMandatoryBean(StandardXAPoolDataSource.class, "jdbcEnhydraXaDataSource");
        conn = pool.getConnection();
        try {
            conn.createStatement().execute(createStatement);
        } catch (SQLException alreadyExists) {
            log.info("ex on create tables", alreadyExists);
        }

        try {
            conn.createStatement().execute("DELETE FROM SCP_INPUT_MESSAGES");
        } catch (SQLException ex) {
            log.info("ex on create delete all", ex);
        }

        return conn;
    }

    private int dumpDb(java.sql.Connection jdbcConn) throws Exception {
        int count = 0;
        ResultSet resultSet = jdbcConn.createStatement().executeQuery("SELECT * FROM SCP_INPUT_MESSAGES");
        while (resultSet.next()) {
            count++;
            log.info("message - seq:" + resultSet.getInt(1)
                    + ", id: " + resultSet.getString(2)
                    + ", corr: " + resultSet.getString(3)
                    + ", content: " + resultSet.getString(4));
        }
        return count;
    }

    public void testRecovery() throws Exception {

        broker = createBroker(true);
        broker.setPlugins(new BrokerPlugin[]{
                new BrokerPluginSupport() {
                    @Override
                    public void commitTransaction(ConnectionContext context,
                                                  TransactionId xid, boolean onePhase) throws Exception {
                        if (onePhase) {
                            super.commitTransaction(context, xid, onePhase);
                        } else {
                            // die before doing the commit
                            // so commit will hang as if reply is lost
                            context.setDontSendReponse(true);
                            Executors.newSingleThreadExecutor().execute(new Runnable() {
                                public void run() {
                                    LOG.info("Stopping broker post commit...");
                                    try {
                                        broker.stop();
                                    } catch (Exception e) {
                                        e.printStackTrace();
                                    }
                                }
                            });
                        }
                    }
                }
        });
        broker.start();

        final java.sql.Connection jdbcConn = initDb();

        ActiveMQConnectionFactory factory = new ActiveMQConnectionFactory("vm://testXA");
        factory.setWatchTopicAdvisories(false);
        Connection connection = factory.createConnection();
        connection.start();
        Session session = connection.createSession(false, Session.AUTO_ACKNOWLEDGE);
        MessageProducer producer = session.createProducer(new ActiveMQQueue("scp_transacted"));
        TextMessage message = session.createTextMessage("Some Text");
        message.setJMSCorrelationID("pleaseCorrelate");
        producer.send(message);

        LOG.info("waiting for route to kick in, it will kill the broker on first 2pc commit");
        // will be stopped by the plugin on first 2pc commit
        broker.waitUntilStopped();
        assertEquals("message in db, commit to db worked", 1, dumpDb(jdbcConn));

        LOG.info("Broker stopped, restarting...");
        broker = createBroker(false);
        broker.start();
        broker.waitUntilStarted();

        LOG.info("waiting for completion or route with replayed message");
        assertTrue("got a second message in the db", Wait.waitFor(new Wait.Condition() {
            @Override
            public boolean isSatisified() throws Exception {
                return 2 == dumpDb(jdbcConn);
            }
        }));
        assertEquals("message in db", 2, dumpDb(jdbcConn));
    }

    private BrokerService createBroker(boolean deleteAllMessages) throws Exception {
        BrokerService brokerService = new BrokerService();
        brokerService.setDeleteAllMessagesOnStartup(deleteAllMessages);
        brokerService.setBrokerName("testXA");
        brokerService.setAdvisorySupport(false);
        brokerService.setUseJmx(false);
        brokerService.setDataDirectory("target/data");
        brokerService.addConnector("tcp://0.0.0.0:61616");
        return brokerService;
    }

    @Override
    protected AbstractXmlApplicationContext createApplicationContext() {
        return new ClassPathXmlApplicationContext("org/apache/activemq/camel/jmsXajdbc.xml");
    }
}