How to set the replyTo with JmsTemplate? - spring

Question

I have a consumer consumes a message do some transformation and create a new Pojo and pass to a producer.
The producer sends the message in queue using the JmsTemplate.
The producer should set the headers of the original message like (JMSType, JMSCorrelationID, JMSExpiration, JMSDeliveryMode) to the new message to send.
But the producer should to change the replyTo Destination of the original message.
I haven't found a way to create a Destination and set to the JMSReplyTo.
Some have an idea how I can do that?
Maybe the JmsTemplate is not the correct class to do that.
public class Producer {
private final JmsTemplate jmsTemplate;
#Value("${jms-destination}")
private String destination;
public Producer(#Autowired JmsTemplate jmsTemplate) {
this.jmsTemplate = jmsTemplate;
}
public void send(final MessageHeaders headers, final Pojo pojo) {
Validate.notNull(order);
jmsTemplate.convertAndSend(destination, pojo, (message) -> {
final Destination replyToDestination = ???;
message.setJMSReplyTo(replyToDestination);
message.setJMSType((String) headers.get(JmsHeaders.TYPE));
message.setJMSCorrelationID((String) headers.get(JmsHeaders.CORRELATION_ID));
message.setJMSExpiration((long) headers.get(JmsHeaders.EXPIRATION));
message.setJMSDeliveryMode((int) headers.get(JmsHeaders.DELIVERY_MODE));
return message;
});
}
}
I have found only this way to do, but I don't like and I don't sure that this introduce side effect:
public class Producer {
private final JmsTemplate jmsTemplate;
#Value("${jms-destination}")
private String destination;
#Value("${jms-replyTo}")
private String replyTo;
public Producer(#Autowired JmsTemplate jmsTemplate) {
this.jmsTemplate = jmsTemplate;
}
public void send(final MessageHeaders headers, Pojo pojo) {
Validate.notNull(order);
jmsTemplate.convertAndSend(destination, order, (message) -> {
final Destination replyToDestination = buildReplyTo();
message.setJMSReplyTo(replyToDestination);
message.setJMSType((String) headers.get(JmsHeaders.TYPE));
message.setJMSCorrelationID((String) headers.get(JmsHeaders.CORRELATION_ID));
message.setJMSExpiration((long) headers.get(JmsHeaders.EXPIRATION));
message.setJMSDeliveryMode((int) headers.get(JmsHeaders.DELIVERY_MODE));
return message;
});
}
private Destination buildReplyTo() throws JMSException {
final Session session = jmsTemplate.getConnectionFactory().createConnection()
.createSession(false, Session.AUTO_ACKNOWLEDGE);
final Destination queue =
jmsTemplate.getDestinationResolver().resolveDestinationName(session, replyTo, false);
return queue;
}
}

Answer 1

Your solution creates side-along connections, which are not closed.
You should use existing session object and send your pojo manually through send API. Use getRequiredMessageConverter to convert your pojo.
public void send(final MessageHeaders headers, Pojo pojo) {
Validate.notNull(order);
final String responseQueue = "responseQ";
jmsTemplate.send(destination,
session -> {
Message message = getRequiredMessageConverter().toMessage(message, session);
message.setJMSReplyTo(session.createQueue(responseQueue)); //fill queue
//any other setters
return message;
});
}
// based on Spring JmsTemplate library
private MessageConverter getRequiredMessageConverter() throws IllegalStateException {
MessageConverter converter = jmsTemplate.getMessageConverter();
if (converter == null) {
throw new IllegalStateException("No 'messageConverter' specified. Check configuration of JmsTemplate.");
} else {
return converter;
}
}