How to interrupt running tasks of a ManagedExecutorService after undeploy?

[markus_s]

I am trying to build a JAX-RS web service that uses ManagedExecutorService with WildFly 8.1 (see EE Concurrency Utilities - WildFly 8 - Project Documentation Editor) to execute some long-running tasks. These tasks should be interrupted after the web service is undeployed. Especially for running integration tests that would be important.

The specification of JSR-236 (http://download.oracle.com/otndocs/jcp/concurrency-1_0-fr-eval-spec/index.html) says in section 3.1.6, that in case the ManagedExecutorService itself is shutdown (as when shutting down WildFly) all running tasks are interrupted - I can verify this behaviour.

However, when I undeploy my application the ManagedExecutorService survives, and the now obsolete tasks of my undeployed application run until they finish - they never receive an interrupt.

I checked this behaviour with logging Thread.currentThread().isInterrupted() in the task.

Is there a way to interrupt (or even force-cancel) all running tasks belonging to a certain application when this application is undeployed?

[emmartins]

Keep the task Future object and cancel it on app undeploy. An alternative is to create a custom executor using a management client before app deploy, and remove it after undeploy.

[markus_s]

Thank you! As you suggested keeping the Future and doing housekeeping in a @PostConstruct (javax.annotation.PostConstruct) method works fine.