MuleSoft Application Development With JMS Queue Explained: Part Two

Introduction

In the first part, I have covered the basic setup of mule flows using queues to publish and consume JMS messages. In this part, I will cover request-response exchange pattern. Basically we want to publish a message to a JMS queue and then wait for reply from the consumer. The details about how this can be achieved using Java are clearly described at this article
http://activemq.apache.org/how-should-i-implement-request-response-with-jms.html

The Message Producer Configuration

The mule configuration for JMS endpoints has the exchange pattern of one-way or request-response. Check the request-response button as show in the figure below:

The XML configuration looks like the following:

Mule Flow Configuration

In order to demonstrate the request-response pattern, I created two flows, as shown in the following figure:

The corresponding XML configuration is listed as the following:

JMS Correlation ID

To set the correlation ID is critical to the request-response exchange pattern. Without this, the pattern will not work. Here is the how we can set the correlation ID: