Spring Integration Example

How to Run

This application is a standalone java program.

• Clone this repository
• Make sure you are using JDK 1.7 or later and Maven 3.x
• You can build the project and run the tests by running mvn clean package
• Once successfully built, you can run the service by typing:

        mvn clean spring-boot:run

• Check the stdout to make sure no exceptions are thrown

Once the application runs you should see something like this

2016-01-18 10:10:35.498  INFO 9268 --- [           main] o.s.i.e.SourcePollingChannelAdapter      : started usersPoller
2016-01-18 10:10:35.506  INFO 9268 --- [           main] com.khoubyari.example.Application        : Started Application in 1.124 seconds (JVM running for 4.98

• You can tail -f /tmp/ulist.txt to see the data being appended
• The app will stop running after 30 seconds.

About the Example

This project is a very simplistic demo of Spring Integration running as part of a Spring Boot project. The app runs for 30 seconds and every 10 seconds it polls a dummy external REST service and appends the response of the call to a file. There is very little code (which is what I wanted to demonstrate) and most of the magic happens in src/main/resources/integration.xml

Other features to be explored. All of these (and more) are possible with Spring Integration:

• Use java annotations instead of integrstion XML
• Use the {} annotation to change the user ID dynamically on the polled URL
• Bind the response to a java DTO object instead of just String
• Persist the resulting response object to a database instead of a file
• Currrently ir dumps the output to "/tmp" which might be a problem on non-*nix systems.