Example usage for javax.jms Session toString

Introduction

In this page you can find the example usage for javax.jms Session toString.

Prototype

public String toString() 

Source Link

Document

Returns a string representation of the object.

Usage

From source file:it.geosolutions.geoserver.jms.client.JMSQueueListener.java

@Override
public void onMessage(Message message, Session session) throws JMSException {

    if (LOGGER.isLoggable(Level.FINE)) {
        LOGGER.fine("Incoming message event for session: " + session.toString());
    }/*w w  w .ja  va2s .  c o  m*/

    // CHECKING LISTENER STATUS
    if (!isEnabled()) {
        if (LOGGER.isLoggable(Level.FINE)) {
            LOGGER.fine("Incoming message is swallowed since this component is disabled");
        }
        return;
    }
    // FILTERING INCOMING MESSAGE
    if (!message.propertyExists(JMSConfiguration.INSTANCE_NAME_KEY)) {
        throw new JMSException("Unable to handle incoming message, property \'"
                + JMSConfiguration.INSTANCE_NAME_KEY + "\' not set.");
    }

    // FILTERING INCOMING MESSAGE
    if (!message.propertyExists(JMSConfiguration.GROUP_KEY)) {
        throw new JMSException(
                "Unable to handle incoming message, property \'" + JMSConfiguration.GROUP_KEY + "\' not set.");
    }

    // check if message comes from a master with the same name of this slave
    if (message.getStringProperty(JMSConfiguration.INSTANCE_NAME_KEY)
            .equals(config.getConfiguration(JMSConfiguration.INSTANCE_NAME_KEY))) {
        if (LOGGER.isLoggable(Level.FINE)) {
            LOGGER.fine("Incoming message discarded: source is equal to destination");
        }
        // if so discard the message
        return;
    }

    // check if message comes from a different group
    final String group = message.getStringProperty(JMSConfiguration.GROUP_KEY);
    final String localGroup = config.getConfiguration(JMSConfiguration.GROUP_KEY);
    if (!group.equals(localGroup)) {
        if (LOGGER.isLoggable(Level.FINE)) {
            LOGGER.fine("Incoming message discarded: incoming group-->" + group
                    + " is different from the local one-->" + localGroup);
        }
        // if so discard the message
        return;
    }

    // check the property which define the SPI used (to serialize on the
    // server side).
    if (!message.propertyExists(JMSEventHandlerSPI.getKeyName()))
        throw new JMSException("Unable to handle incoming message, property \'"
                + JMSEventHandlerSPI.getKeyName() + "\' not set.");

    // END -> FILTERING INCOMING MESSAGE

    // get the name of the SPI used to serialize the message
    final String generatorClass = message.getStringProperty(JMSEventHandlerSPI.getKeyName());
    if (generatorClass == null || generatorClass.isEmpty()) {
        throw new IllegalArgumentException("Unable to handle a message without a generator class name");
    }
    if (LOGGER.isLoggable(Level.FINE)) {
        LOGGER.fine(
                "Incoming message was serialized using an handler generated by: \'" + generatorClass + "\'");
    }

    // USING INCOMING MESSAGE
    if (message instanceof ObjectMessage) {

        final ObjectMessage objMessage = (ObjectMessage) (message);
        final Serializable obj = objMessage.getObject();

        try {
            // lookup the SPI handler, search is performed using the
            // name
            final JMSEventHandler<Serializable, Object> handler = jmsManager
                    .getHandlerByClassName(generatorClass);
            if (handler == null) {
                throw new JMSException("Unable to find SPI named \'" + generatorClass
                        + "\', be shure to load that SPI into your context.");
            }

            final Enumeration<String> keys = message.getPropertyNames();
            final Properties options = new Properties();
            while (keys.hasMoreElements()) {
                String key = keys.nextElement();
                options.put(key, message.getObjectProperty(key));
            }
            handler.setProperties(options);

            // try to synchronize object locally
            if (!handler.synchronize(handler.deserialize(obj))) {
                throw new JMSException("Unable to synchronize message locally.\n SPI: " + generatorClass);
            }

        } catch (Exception e) {
            final JMSException jmsE = new JMSException(e.getLocalizedMessage());
            jmsE.initCause(e);
            throw jmsE;
        }

    } else
        throw new JMSException("Unrecognized message type for catalog incoming event");
}

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