Hi Sridhar,
> class CA2 {
>
> val ca2Refs = Set.Empty[ActorRef]
> receive => {
> case messageFromMaster => {
> if (ca2Refs.isEmpty) {
> val ca2Ref = context.actorOf(Props[CA2])
> context.watch(ca2Ref)
> ca2Refs += ca2Ref
> ca2Ref ! message
> }
> }
> case messageFromCA2 => {
> ca2Refs -= ca2Ref
> }
>
Does the line above guarantee that the child was actually terminated? If
you remove it, but it is still running that might be a problem (depending
on what you want to achieve).
> case Terminated => {
> ca2Refs -= ca2Ref
> }
> }
> }
>
>
> Question I have is, is this within the "Normal practices" of akka? And
> will this account for actors that are restarted? As in if a particular
> child actor CA2 is restarted, will CA1 receive the Terminated message?
> Would appreciate your feedback.
>
Restarts do not result in Terminated messages, since the actor is not
terminated -- it is restarted. A supervisor directive Stop, an explicit
context.stop(child) or child ! PoisonPill results in the child being
stopped and in a Terminated message.
Also in your code, when CA1 is restarted the ca2Refs variable will be
initialized to the empty set although the children are still there
(although they have been restarted recursively). See this for details on
how restart works:
http://doc.akka.io/docs/akka/2.2.3/general/supervision.html#What_Restarting_Means
-Endre
>
> Regards,
> Sridhar.
>
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