I have a master worker which has a superviser to supervise over its child
worker. The child worker throws a IOException which is viewed by the parent
who then calls the resume()/restart() method of SupervisorStartegy.
Till now when the IO exception is getting thrown, the exception is
transferred to the parent, the parent is calling the resume/restart method
but after that I am getting a timeout exception.
I want that the parent will try to resume/restart the child worker for n
number of times before stopping gracefully with a message. But what i am
getting in this code is an exception after a single try
On Tuesday, August 12, 2014 11:28:12 AM UTC+5:30, soumya sengupta wrote:
>
> I have a master worker
>
> public class EmailServiceActor extends UntypedActor{
> ActorRef actorRef ;
> private static SupervisorStrategy strategy =
> new OneForOneStrategy(3, Duration.create("1 minute"),
> new Function<Throwable, Directive>() {
> @Override
> public Directive apply(Throwable t) {
> if (t instanceof IOException) {
> System.out.println("IO Exception occurred");
> return restart();
> } else if (t instanceof Exception) {
> return stop();
> } else {
> return escalate();
> }
> }
> });
>
> @Override
> public void onReceive(Object message) {
> System.out.println("Received .....");
> if(message instanceof MyLocalMessage){
> System.out.println("received instr from EmailServiceWorker by
> EmailServiceActor");
> actorRef.tell(message, self());
> }else{
> actorRef = getSender();
> System.out.println("received instr by EmailServiceActor from Application");
> getContext().actorOf(Props.create(EmailServiceWorker.class),"EmailServiceWorker").tell(message,
>
> self());
> }
> }
> @Override
> public SupervisorStrategy supervisorStrategy() {
> return strategy;
> }
>
> @Override
> public void preStart() {
> System.out.println("Pre Restart...");
> }
>
> }
>
> I also have a child worker
>
> public class EmailServiceWorker extends UntypedActor{
>
> @Override
> public void onReceive(Object message) throws IOException{
>
> System.out.println("received instr by EmailServiceWorker");
> System.out.println("Sending mail");
> FileReader reader = new FileReader("someFile");
> MyLocalMessage myLocalMessage = new MyLocalMessage("Hello");
> getSender().tell( myLocalMessage, getSelf() );
> getContext().stop(getSelf());
>
> }
>
> @Override
> public void preStart() {
> System.out.println("Pre Restart");
> }
>
> }
>
> There is no such file as "someFile". I am deliberately trying to raise the
> error.
>
> But when I run the application I get the error
>
> [info] play - Application started (Dev)
> Pre Restart...
> Received .....
> received instr by EmailServiceActor from Application
> Pre Restart
> received instr by EmailServiceWorker
> Sending mail
> IO Exception occurred
> Pre Restart
> [ERROR] [08/12/2014 10:53:13.844] [play-akka.actor.default-dispatcher-5]
> [akka://play/user/EmailServiceActor/EmailServiceWorker] someFile (No such
> file or directory)
> java.io.FileNotFoundException: someFile (No such file or directory)
> at java.io.FileInputStream.open(Native Method)
> at java.io.FileInputStream.<init>(FileInputStream.java:146)
> at java.io.FileInputStream.<init>(FileInputStream.java:101)
> at java.io.FileReader.<init>(FileReader.java:58)
> at actors.EmailServiceWorker.onReceive(EmailServiceWorker.java:18)
> at
> akka.actor.UntypedActor$$anonfun$receive$1.applyOrElse(UntypedActor.scala:167)
> at akka.actor.Actor$class.aroundReceive(Actor.scala:465)
> at akka.actor.UntypedActor.aroundReceive(UntypedActor.scala:97)
> at akka.actor.ActorCell.receiveMessage(ActorCell.scala:516)
> at akka.actor.ActorCell.invoke(ActorCell.scala:487)
> at akka.dispatch.Mailbox.processMailbox(Mailbox.scala:238)
> at akka.dispatch.Mailbox.run(Mailbox.scala:220)
> at
> akka.dispatch.ForkJoinExecutorConfigurator$AkkaForkJoinTask.exec(AbstractDispatcher.scala:393)
> at scala.concurrent.forkjoin.ForkJoinTask.doExec(ForkJoinTask.java:260)
> at
> scala.concurrent.forkjoin.ForkJoinPool$WorkQueue.runTask(ForkJoinPool.java:1339)
> at scala.concurrent.forkjoin.ForkJoinPool.runWorker(ForkJoinPool.java:1979)
> at
> scala.concurrent.forkjoin.ForkJoinWorkerThread.run(ForkJoinWorkerThread.java:107)
>
> [error] play - Cannot invoke the action, eventually got an error:
> akka.pattern.AskTimeoutException: Ask timed out on
> [ActorSelection[Anchor(akka://play/), Path(/user/EmailServiceActor)]] after
> [190000 ms]
> [error] application -
>
> ! @6j77j81fk - Internal server error, for (GET) [/sendmail] ->
>
>
>
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