/*
* @see javax.jms.MessageListener#onMessage(javax.jms.Message)
*
* @param message
*/
@Override
public void onMessage(Message message) {
RuntimeCamelException rce = null;
try {
final DefaultExchange exchange =
(DefaultExchange) JmsMessageHelper.createExchange(message, getEndpoint());
log.debug("Processing Exchange.id:{}", exchange.getExchangeId());
if (isTransacted() && synchronization != null) {
exchange.addOnCompletion(synchronization);
}
try {
if (isTransacted() || isSynchronous()) {
log.debug(" Handling synchronous message: {}", exchange.getIn().getBody());
handleMessage(exchange);
} else {
log.debug(" Handling asynchronous message: {}", exchange.getIn().getBody());
executor.execute(
new Runnable() {
@Override
public void run() {
try {
handleMessage(exchange);
} catch (Exception e) {
exchange.setException(e);
}
}
});
}
} catch (Exception e) {
if (exchange != null) {
if (exchange.getException() == null) {
exchange.setException(e);
} else {
throw e;
}
}
}
} catch (Exception e) {
rce = wrapRuntimeCamelException(e);
} finally {
if (rce != null) {
throw rce;
}
}
}
/**
* TODO time out is actually double as it waits for the producer and then waits for the response.
* Use an atomic long to manage the countdown
*/
@Override
public void sendMessage(
final Exchange exchange,
final AsyncCallback callback,
final MessageProducerResources producer,
final ReleaseProducerCallback releaseProducerCallback)
throws Exception {
Message request = getEndpoint().getBinding().makeJmsMessage(exchange, producer.getSession());
String correlationId =
exchange.getIn().getHeader(JmsConstants.JMS_CORRELATION_ID, String.class);
if (correlationId == null) {
// we append the 'Camel-' prefix to know it was generated by us
correlationId = GENERATED_CORRELATION_ID_PREFIX + getUuidGenerator().generateUuid();
}
Object responseObject = null;
Exchanger<Object> messageExchanger = new Exchanger<Object>();
JmsMessageHelper.setCorrelationId(request, correlationId);
EXCHANGERS.put(correlationId, messageExchanger);
MessageConsumerResources consumer = consumers.borrowObject();
JmsMessageHelper.setJMSReplyTo(request, consumer.getReplyToDestination());
consumers.returnObject(consumer);
producer.getMessageProducer().send(request);
// Return the producer to the pool so another waiting producer
// can move forward
// without waiting on us to complete the exchange
try {
releaseProducerCallback.release(producer);
} catch (Exception exception) {
// thrown if the pool is full. safe to ignore.
}
try {
responseObject = messageExchanger.exchange(null, getResponseTimeOut(), TimeUnit.MILLISECONDS);
EXCHANGERS.remove(correlationId);
} catch (InterruptedException e) {
log.debug("Exchanger was interrupted while waiting on response", e);
exchange.setException(e);
} catch (TimeoutException e) {
log.debug("Exchanger timed out while waiting on response", e);
exchange.setException(e);
}
if (exchange.getException() == null) {
if (responseObject instanceof Throwable) {
exchange.setException((Throwable) responseObject);
} else if (responseObject instanceof Message) {
Message message = (Message) responseObject;
SjmsMessage response =
new SjmsMessage(message, consumer.getSession(), getEndpoint().getBinding());
// the JmsBinding is designed to be "pull-based": it will populate the Camel message on
// demand
// therefore, we link Exchange and OUT message before continuing, so that the JmsBinding has
// full access
// to everything it may need, and can populate headers, properties, etc. accordingly (solves
// CAMEL-6218).
exchange.setOut(response);
} else {
exchange.setException(new CamelException("Unknown response type: " + responseObject));
}
}
callback.done(isSynchronous());
}
