Scheduling and monitoring with java in mule

1. By Anirban Sen Chowdhary

2. We often get a requirement of scheduling a task or monitoring some event
consistently when our application is running on server.
In that case we need to create a thread in our application that will constantly
monitor the event in our application and start the task after every fixed interval of
time.
In Mule we get plenty of options of doing it like using Quartz scheduler or Poll
component etc.
But what if we want to use our custom java class for that ???

3. Yes, we can do a scheduling and monitoring activity using a Java class and Spring
task scheduler in our Mule application….

5. Let’s consider we have a simple Mule flow as following:-
Now, this is a simple flow where we will hit a url in the browser and it will send a
response to the browser and log the payload in console.
Now, we will also create a Java class here that will constantly load itself after the
application run in the server after every 10 sec and will print a message in console.

6. Let’s consider we our Java class is as following:-
This is a simple Java class that will log a message after every 10 seconds and will
be running in our application and will be monitoring in our application.
We can customize this class as per our requirement and put our own code here for
monitoring.
So far, I have kept it simple only to demonstrate the functionality

7. So here is our Spring configuration in the Mule config that will trigger this class
after every 10 second and keep the thread alive for monitoring and printing in the
console:-
Here you can see the Spring task scheduler is scheduling the Java class after every
10 sec. Also there is a Mule flow that will print the message in the browser and
console if we hit the url http://localhost:8082/test in browser

8. So if we run our application we will see the message after every 10 sec.:-

9. So if we hit url http://localhost:8082/test in browser we will get the following .:-

10. Also in the console we will get .:-
But the interesting fact is the Spring task scheduler is executing the Java class after
every 10 sec. So, using Java and Spring you can schedule and monitor events in
Mule which is an alternative to Quartz and Poll components

11. 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 