Allowing SecurityException to propagate during actor system termination

[Christopher Hunt]

Hi everyone,

I have a situation where I need to call System.exit upon an actor system having terminated. In some runtime situations, a SecurityException will be thrown and I need that to be propagated as an unhandled exception. I can go into the details of why if required, but my question is how to enable this. Here's my existing termination handler which does what I want. However, I'm wondering if there's a better way given that onComplete and friends all swallow exceptions and pass them onto the Dispatcher's reporter:

  system.whenTerminated
    .andThen {
      case _ =>
        new Thread({ () =>
          println("Exiting")
          System.exit(exitStatus.getOrElse(1))
        }: Runnable).start()
    }

Cheers,

-C

[Viktor Klang]

When you say "unhandled exception" you mean "uncaught exception"?

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Cheers,

√

[Christopher Hunt]

Ah yes, uncaught. Thanks for the correction. 

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[Viktor Klang]

Depends on what you want to achieve. You can always do Thread.currentThread.getUncaughtExeptionHandler and pass your exception in manually (if you don't want to throw a Fatal exception or provide your own `reporter` (to the ExecutionContext).

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Cheers,

√

[Christopher Hunt]

Thanks Viktor, I’ve gone with your suggestion which I think is nice and explicit:

private val eh = Thread.currentThread().getUncaughtExceptionHandler

system.whenTerminated
  .andThen {
    case _ =>

      try {
        println("Exiting")
        System.exit(exitStatus.getOrElse(1))
      } catch {
        case se: SecurityException => eh.uncaughtException(Thread.currentThread(), se)
      }
  }