Accessing jms by groovy

1. ACCESSING JMS BY GROOVY

2. We have earlier seen how to integrate Mule and ActiveMQ .
We have also seen how to send message to ActiveMQ queue from Mule with a specific
JMS priority and to fetch messages from ActiveMQ queue filtering a particular JMS
Here we will see how to filter messages to ActiveMQ from Groovy script with a particular
JMS priority

3. Yes, we can filter payload using Groovy script for the message from ActiveMQ queue with a
particular JMS priority ….

4. Let’s consider we have a simple Mule flow as following:-
Here in we will send messages to an ActiveMQ queue with a particular JMS priority.
Let’s say our queue name be StudioOUT.
So we will be sending messages to queue StudioOUT.

5. So, our Mule config will be as following:-
You can see we are sending message to queue StudioOUT with JMS priority 9 using the
following code :-
<message-properties-transformer>
<add-message-property key="Priority" value="9"/>
</message-properties-transformer>

6. Now, we will test the flow by hitting url http://localhost:8081/test the message will be send
to queue with JMS priority 9 :-

7. And, we will also check our ActiveMQ portal we will find the following :-
You can see the message priority is 9 as we have configured JMS priority in our flow

8. Now let’s design a flow which will receive message from ActiveMQ queue and filter it by
JMS priority using Groovy script:-
You can see we have used Groovy Script to fetch the message from queue StudioOUT

9. Now our Mule config which is using Groovy script is as follow:-

10. Now if we start our application again we will get as follow:-

11. And you can see it has consumed the message from queue which has the JMS priority 9 :-
Thus, you can see that we can also set the filter to consume message from ActiveMQ using
Groovy

12. In my next slide I will bring some other techniques in Mule implementation .
Hope you have enjoyed this simpler version.
Keep sharing your knowledge and let our Mule community grow 