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ActiveMQ example source code file (JmsTopicConnector.java)

This example ActiveMQ source code file (JmsTopicConnector.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

failed, inboundtopicbridge, jmsexception, jmsexception, naming, namingexception, outboundtopicbridge, string, string, topic, topic, topicconnection, topicconnectionfactory, topicsession, topicsession

The ActiveMQ JmsTopicConnector.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.network.jms;

import javax.jms.Connection;
import javax.jms.Destination;
import javax.jms.JMSException;
import javax.jms.Session;
import javax.jms.Topic;
import javax.jms.TopicConnection;
import javax.jms.TopicConnectionFactory;
import javax.jms.TopicSession;
import javax.naming.NamingException;

import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

/**
 * A Bridge to other JMS Topic providers
 * 
 * @org.apache.xbean.XBean
 * 
 * 
 */
public class JmsTopicConnector extends JmsConnector {
    private static final Logger LOG = LoggerFactory.getLogger(JmsTopicConnector.class);
    private String outboundTopicConnectionFactoryName;
    private String localConnectionFactoryName;
    private TopicConnectionFactory outboundTopicConnectionFactory;
    private TopicConnectionFactory localTopicConnectionFactory;
    private TopicConnection outboundTopicConnection;
    private TopicConnection localTopicConnection;
    private InboundTopicBridge[] inboundTopicBridges;
    private OutboundTopicBridge[] outboundTopicBridges;

    public boolean init() {
        boolean result = super.init();
        if (result) {
            try {
                initializeForeignTopicConnection();
                initializeLocalTopicConnection();
                initializeInboundJmsMessageConvertor();
                initializeOutboundJmsMessageConvertor();
                initializeInboundTopicBridges();
                initializeOutboundTopicBridges();
            } catch (Exception e) {
                LOG.error("Failed to initialize the JMSConnector", e);
            }
        }
        return result;
    }

    /**
     * @return Returns the inboundTopicBridges.
     */
    public InboundTopicBridge[] getInboundTopicBridges() {
        return inboundTopicBridges;
    }

    /**
     * @param inboundTopicBridges The inboundTopicBridges to set.
     */
    public void setInboundTopicBridges(InboundTopicBridge[] inboundTopicBridges) {
        this.inboundTopicBridges = inboundTopicBridges;
    }

    /**
     * @return Returns the outboundTopicBridges.
     */
    public OutboundTopicBridge[] getOutboundTopicBridges() {
        return outboundTopicBridges;
    }

    /**
     * @param outboundTopicBridges The outboundTopicBridges to set.
     */
    public void setOutboundTopicBridges(OutboundTopicBridge[] outboundTopicBridges) {
        this.outboundTopicBridges = outboundTopicBridges;
    }

    /**
     * @return Returns the localTopicConnectionFactory.
     */
    public TopicConnectionFactory getLocalTopicConnectionFactory() {
        return localTopicConnectionFactory;
    }

    /**
     * @param localTopicConnectionFactory The localTopicConnectionFactory to
     *                set.
     */
    public void setLocalTopicConnectionFactory(TopicConnectionFactory localConnectionFactory) {
        this.localTopicConnectionFactory = localConnectionFactory;
    }

    /**
     * @return Returns the outboundTopicConnectionFactory.
     */
    public TopicConnectionFactory getOutboundTopicConnectionFactory() {
        return outboundTopicConnectionFactory;
    }

    /**
     * @return Returns the outboundTopicConnectionFactoryName.
     */
    public String getOutboundTopicConnectionFactoryName() {
        return outboundTopicConnectionFactoryName;
    }

    /**
     * @param outboundTopicConnectionFactoryName The
     *                outboundTopicConnectionFactoryName to set.
     */
    public void setOutboundTopicConnectionFactoryName(String foreignTopicConnectionFactoryName) {
        this.outboundTopicConnectionFactoryName = foreignTopicConnectionFactoryName;
    }

    /**
     * @return Returns the localConnectionFactoryName.
     */
    public String getLocalConnectionFactoryName() {
        return localConnectionFactoryName;
    }

    /**
     * @param localConnectionFactoryName The localConnectionFactoryName to set.
     */
    public void setLocalConnectionFactoryName(String localConnectionFactoryName) {
        this.localConnectionFactoryName = localConnectionFactoryName;
    }

    /**
     * @return Returns the localTopicConnection.
     */
    public TopicConnection getLocalTopicConnection() {
        return localTopicConnection;
    }

    /**
     * @param localTopicConnection The localTopicConnection to set.
     */
    public void setLocalTopicConnection(TopicConnection localTopicConnection) {
        this.localTopicConnection = localTopicConnection;
    }

    /**
     * @return Returns the outboundTopicConnection.
     */
    public TopicConnection getOutboundTopicConnection() {
        return outboundTopicConnection;
    }

    /**
     * @param outboundTopicConnection The outboundTopicConnection to set.
     */
    public void setOutboundTopicConnection(TopicConnection foreignTopicConnection) {
        this.outboundTopicConnection = foreignTopicConnection;
    }

    /**
     * @param outboundTopicConnectionFactory The outboundTopicConnectionFactory
     *                to set.
     */
    public void setOutboundTopicConnectionFactory(TopicConnectionFactory foreignTopicConnectionFactory) {
        this.outboundTopicConnectionFactory = foreignTopicConnectionFactory;
    }

    public void restartProducerConnection() throws NamingException, JMSException {
        outboundTopicConnection = null;
        initializeForeignTopicConnection();
    }

    protected void initializeForeignTopicConnection() throws NamingException, JMSException {
        if (outboundTopicConnection == null) {
            // get the connection factories
            if (outboundTopicConnectionFactory == null) {
                // look it up from JNDI
                if (outboundTopicConnectionFactoryName != null) {
                    outboundTopicConnectionFactory = (TopicConnectionFactory)jndiOutboundTemplate
                        .lookup(outboundTopicConnectionFactoryName, TopicConnectionFactory.class);
                    if (outboundUsername != null) {
                        outboundTopicConnection = outboundTopicConnectionFactory
                            .createTopicConnection(outboundUsername, outboundPassword);
                    } else {
                        outboundTopicConnection = outboundTopicConnectionFactory.createTopicConnection();
                    }
                } else {
                    throw new JMSException("Cannot create localConnection - no information");
                }
            } else {
                if (outboundUsername != null) {
                    outboundTopicConnection = outboundTopicConnectionFactory
                        .createTopicConnection(outboundUsername, outboundPassword);
                } else {
                    outboundTopicConnection = outboundTopicConnectionFactory.createTopicConnection();
                }
            }
        }
        if (localClientId != null && localClientId.length() > 0) {
            outboundTopicConnection.setClientID(getOutboundClientId());
        }
        outboundTopicConnection.start();
    }

    protected void initializeLocalTopicConnection() throws NamingException, JMSException {
        if (localTopicConnection == null) {
            // get the connection factories
            if (localTopicConnectionFactory == null) {
                if (embeddedConnectionFactory == null) {
                    // look it up from JNDI
                    if (localConnectionFactoryName != null) {
                        localTopicConnectionFactory = (TopicConnectionFactory)jndiLocalTemplate
                            .lookup(localConnectionFactoryName, TopicConnectionFactory.class);
                        if (localUsername != null) {
                            localTopicConnection = localTopicConnectionFactory
                                .createTopicConnection(localUsername, localPassword);
                        } else {
                            localTopicConnection = localTopicConnectionFactory.createTopicConnection();
                        }
                    } else {
                        throw new JMSException("Cannot create localConnection - no information");
                    }
                } else {
                    localTopicConnection = embeddedConnectionFactory.createTopicConnection();
                }
            } else {
                if (localUsername != null) {
                    localTopicConnection = localTopicConnectionFactory.createTopicConnection(localUsername,
                                                                                             localPassword);
                } else {
                    localTopicConnection = localTopicConnectionFactory.createTopicConnection();
                }
            }
        }
        if (localClientId != null && localClientId.length() > 0) {
            localTopicConnection.setClientID(getLocalClientId());
        }
        localTopicConnection.start();
    }

    protected void initializeInboundJmsMessageConvertor() {
        inboundMessageConvertor.setConnection(localTopicConnection);
    }

    protected void initializeOutboundJmsMessageConvertor() {
        outboundMessageConvertor.setConnection(outboundTopicConnection);
    }

    protected void initializeInboundTopicBridges() throws JMSException {
        if (inboundTopicBridges != null) {
            TopicSession outboundSession = outboundTopicConnection
                .createTopicSession(false, Session.AUTO_ACKNOWLEDGE);
            TopicSession localSession = localTopicConnection.createTopicSession(false,
                                                                                Session.AUTO_ACKNOWLEDGE);
            for (int i = 0; i < inboundTopicBridges.length; i++) {
                InboundTopicBridge bridge = inboundTopicBridges[i];
                String localTopicName = bridge.getLocalTopicName();
                Topic activemqTopic = createActiveMQTopic(localSession, localTopicName);
                String topicName = bridge.getInboundTopicName();
                Topic foreignTopic = createForeignTopic(outboundSession, topicName);
                bridge.setConsumerTopic(foreignTopic);
                bridge.setProducerTopic(activemqTopic);
                bridge.setProducerConnection(localTopicConnection);
                bridge.setConsumerConnection(outboundTopicConnection);
                if (bridge.getJmsMessageConvertor() == null) {
                    bridge.setJmsMessageConvertor(getInboundMessageConvertor());
                }
                bridge.setJmsConnector(this);
                addInboundBridge(bridge);
            }
            outboundSession.close();
            localSession.close();
        }
    }

    protected void initializeOutboundTopicBridges() throws JMSException {
        if (outboundTopicBridges != null) {
            TopicSession outboundSession = outboundTopicConnection
                .createTopicSession(false, Session.AUTO_ACKNOWLEDGE);
            TopicSession localSession = localTopicConnection.createTopicSession(false,
                                                                                Session.AUTO_ACKNOWLEDGE);
            for (int i = 0; i < outboundTopicBridges.length; i++) {
                OutboundTopicBridge bridge = outboundTopicBridges[i];
                String localTopicName = bridge.getLocalTopicName();
                Topic activemqTopic = createActiveMQTopic(localSession, localTopicName);
                String topicName = bridge.getOutboundTopicName();
                Topic foreignTopic = createForeignTopic(outboundSession, topicName);
                bridge.setConsumerTopic(activemqTopic);
                bridge.setProducerTopic(foreignTopic);
                bridge.setProducerConnection(outboundTopicConnection);
                bridge.setConsumerConnection(localTopicConnection);
                if (bridge.getJmsMessageConvertor() == null) {
                    bridge.setJmsMessageConvertor(getOutboundMessageConvertor());
                }
                bridge.setJmsConnector(this);
                addOutboundBridge(bridge);
            }
            outboundSession.close();
            localSession.close();
        }
    }

    protected Destination createReplyToBridge(Destination destination, Connection replyToProducerConnection,
                                              Connection replyToConsumerConnection) {
        Topic replyToProducerTopic = (Topic)destination;
        boolean isInbound = replyToProducerConnection.equals(localTopicConnection);

        if (isInbound) {
            InboundTopicBridge bridge = (InboundTopicBridge)replyToBridges.get(replyToProducerTopic);
            if (bridge == null) {
                bridge = new InboundTopicBridge() {
                    protected Destination processReplyToDestination(Destination destination) {
                        return null;
                    }
                };
                try {
                    TopicSession replyToConsumerSession = ((TopicConnection)replyToConsumerConnection)
                        .createTopicSession(false, Session.AUTO_ACKNOWLEDGE);
                    Topic replyToConsumerTopic = replyToConsumerSession.createTemporaryTopic();
                    replyToConsumerSession.close();
                    bridge.setConsumerTopic(replyToConsumerTopic);
                    bridge.setProducerTopic(replyToProducerTopic);
                    bridge.setProducerConnection((TopicConnection)replyToProducerConnection);
                    bridge.setConsumerConnection((TopicConnection)replyToConsumerConnection);
                    bridge.setDoHandleReplyTo(false);
                    if (bridge.getJmsMessageConvertor() == null) {
                        bridge.setJmsMessageConvertor(getInboundMessageConvertor());
                    }
                    bridge.setJmsConnector(this);
                    bridge.start();
                    LOG.info("Created replyTo bridge for " + replyToProducerTopic);
                } catch (Exception e) {
                    LOG.error("Failed to create replyTo bridge for topic: " + replyToProducerTopic, e);
                    return null;
                }
                replyToBridges.put(replyToProducerTopic, bridge);
            }
            return bridge.getConsumerTopic();
        } else {
            OutboundTopicBridge bridge = (OutboundTopicBridge)replyToBridges.get(replyToProducerTopic);
            if (bridge == null) {
                bridge = new OutboundTopicBridge() {
                    protected Destination processReplyToDestination(Destination destination) {
                        return null;
                    }
                };
                try {
                    TopicSession replyToConsumerSession = ((TopicConnection)replyToConsumerConnection)
                        .createTopicSession(false, Session.AUTO_ACKNOWLEDGE);
                    Topic replyToConsumerTopic = replyToConsumerSession.createTemporaryTopic();
                    replyToConsumerSession.close();
                    bridge.setConsumerTopic(replyToConsumerTopic);
                    bridge.setProducerTopic(replyToProducerTopic);
                    bridge.setProducerConnection((TopicConnection)replyToProducerConnection);
                    bridge.setConsumerConnection((TopicConnection)replyToConsumerConnection);
                    bridge.setDoHandleReplyTo(false);
                    if (bridge.getJmsMessageConvertor() == null) {
                        bridge.setJmsMessageConvertor(getOutboundMessageConvertor());
                    }
                    bridge.setJmsConnector(this);
                    bridge.start();
                    LOG.info("Created replyTo bridge for " + replyToProducerTopic);
                } catch (Exception e) {
                    LOG.error("Failed to create replyTo bridge for topic: " + replyToProducerTopic, e);
                    return null;
                }
                replyToBridges.put(replyToProducerTopic, bridge);
            }
            return bridge.getConsumerTopic();
        }
    }

    protected Topic createActiveMQTopic(TopicSession session, String topicName) throws JMSException {
        return session.createTopic(topicName);
    }

    protected Topic createForeignTopic(TopicSession session, String topicName) throws JMSException {
        Topic result = null;
        try {
            result = session.createTopic(topicName);
        } catch (JMSException e) {
            // look-up the Topic
            try {
                result = (Topic)jndiOutboundTemplate.lookup(topicName, Topic.class);
            } catch (NamingException e1) {
                String errStr = "Failed to look-up Topic for name: " + topicName;
                LOG.error(errStr, e);
                JMSException jmsEx = new JMSException(errStr);
                jmsEx.setLinkedException(e1);
                throw jmsEx;
            }
        }
        return result;
    }

}

Other ActiveMQ examples (source code examples)

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