nl.han.dare2date.jms.JMSPublisher.java Source code

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Here is the source code for nl.han.dare2date.jms.JMSPublisher.java

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/**
 * Copyright (c) 2013 HAN University of Applied Sciences
 * Arjan Oortgiese
 * Joll Portier
 *
 * Permission is hereby granted, free of charge, to any person
 * obtaining a copy of this software and associated documentation
 * files (the "Software"), to deal in the Software without
 * restriction, including without limitation the rights to use,
 * copy, modify, merge, publish, distribute, sublicense, and/or sell
 * copies of the Software, and to permit persons to whom the
 * Software is furnished to do so, subject to the following
 * conditions:
 *
 * The above copyright notice and this permission notice shall be
 * included in all copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
 * OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
 * HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
 * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
 * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
 * OTHER DEALINGS IN THE SOFTWARE.
 */
package nl.han.dare2date.jms;

import nl.han.dare2date.logger.ILogger;
import nl.han.dare2date.service.jms.util.JMSUtil;
import org.springframework.beans.factory.annotation.Autowired;

import javax.jms.*;
import javax.naming.Context;
import javax.naming.InitialContext;
import javax.naming.NamingException;
import java.io.IOException;
import java.io.Serializable;
import java.util.Properties;

public class JMSPublisher implements IJMSPublisher {
    private Context context;
    private ILogger logger;
    private Connection connection;
    private Session session;

    private MessageProducer topicPublisher;

    /**
     * Set logger.
     *
     * @param logger Logger.
     */
    @Autowired
    public void setLogger(ILogger logger) {
        this.logger = logger;
    }

    public boolean connect(String topicName) {
        try {
            context = JMSUtil.getContext();
        } catch (NamingException e) {
            logger.error("Can't create context", e);
            return false;
        } catch (IOException e) {
            logger.error("Can't create context", e);
            return false;
        }

        connection = JMSUtil.getConnection();

        try {
            session = connection.createSession(false, Session.AUTO_ACKNOWLEDGE);
        } catch (JMSException e) {
            logger.error("Can't create session", e);
            return false;
        }

        Destination topic = null;
        try {
            topic = (Topic) context.lookup(topicName);
        } catch (NamingException e) {
            logger.error("Can't load topic by name", e);
            return false;
        }

        try {
            topicPublisher = session.createProducer(topic);
        } catch (JMSException e) {
            logger.error("Can't create producer", e);
            return false;
        }

        return true;
    }

    public boolean disconnect() {
        try {
            connection.close();
        } catch (JMSException e) {
            logger.error("Can't close connection", e);
            return false;
        }

        connection = null;
        return true;
    }

    public ObjectMessage createObjectMessage(Serializable item) {
        if (topicPublisher == null) {
            throw new RuntimeException("Not connected");
        }

        try {
            ObjectMessage msg = session.createObjectMessage();
            msg.setObject(item);
            return msg;
        } catch (JMSException e) {
            logger.error("Can't create object message", e);
            return null;
        }
    }

    public boolean send(ObjectMessage message) {
        if (topicPublisher == null) {
            throw new RuntimeException("Not connected");
        }

        try {
            topicPublisher.send(message);
        } catch (JMSException e) {
            logger.error("Can't send message", e);
            return true;
        }

        return false;
    }
}