13.7. Shutting Down the Akka Actor System
Problem
You want to shut down the Akka actor system, typically because your application is finished, and you want to shut it down gracefully.
Solution
Call the shutdown
method on
your ActorSystem
instance:
object
Main
extends
App
{
// create the ActorSystem
val
system
=
ActorSystem
(
"HelloSystem"
)
// put your actors to work here ...
// shut down the ActorSystem when the work is finished
system
.
shutdown
}
Discussion
When you’re finished using actors in your application, you should
call the shutdown
method on your
ActorSystem
instance. As shown in the
examples in this chapter, if you comment out the system.shutdown
call, your application will
continue to run indefinitely.
In my SARAH
application, which is a Swing application, I call actorSystem.shutdown
when the user shuts down
the GUI.
If you want to stop your actors before shutting down the actor system, such as to let them complete their current work, see the examples in Recipe 13.6.
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