org.powertac.samplebroker.core.BrokerMessageReceiver.java Source code

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Here is the source code for org.powertac.samplebroker.core.BrokerMessageReceiver.java

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/*
 * Copyright (c) 2012 by the original author
 *
 * Licensed 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.powertac.samplebroker.core;

import javax.jms.JMSException;
import javax.jms.Message;
import javax.jms.MessageListener;
import javax.jms.TextMessage;

import org.apache.log4j.Logger;
import org.powertac.common.XMLMessageConverter;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;

/**
 * Receives incoming jms messages for the broker
 * @author Nguyen Nguyen, John Collins
 */
@Service
public class BrokerMessageReceiver implements MessageListener {
    static private Logger log = Logger.getLogger(BrokerMessageReceiver.class);

    @Autowired
    XMLMessageConverter converter;

    @Autowired
    MessageDispatcher messageDispatcher;

    @Override
    public void onMessage(Message message) {
        if (message instanceof TextMessage) {
            try {
                log.debug("onMessage(Message) - receiving a message");
                onMessage(((TextMessage) message).getText());
            } catch (JMSException e) {
                log.error("failed to extract text from TextMessage", e);
            }
        }
    }

    private void onMessage(String xml) {
        log.info("onMessage(String) - received message:\n" + xml);
        Object message = converter.fromXML(xml);
        log.debug("onMessage(String) - received message of type " + message.getClass().getSimpleName());
        messageDispatcher.routeMessage(message);
    }
}