Package akka.event

Class EventStreamUnsubscriber

  • All Implemented Interfaces:
    Actor

    public class EventStreamUnsubscriber
    extends java.lang.Object
    implements Actor
    INTERNAL API

    Watches all actors which subscribe on the given eventStream, and unsubscribes them from it when they are Terminated.

    Assumptions note: We do not guarantee happens-before in the EventStream when 2 threads subscribe(a) / unsubscribe(a) on the same actor, thus the messages sent to this actor may appear to be reordered - this is fine, because the worst-case is starting to needlessly watch the actor which will not cause trouble for the stream. This is a trade-off between slowing down subscribe calls * because of the need of linearizing the history message sequence and the possibility of sometimes watching a few actors too much - we opt for the 2nd choice here.

    • Constructor Detail

      • EventStreamUnsubscriber

        public EventStreamUnsubscriber​(EventStream eventStream,
                                       boolean debug)
    • Method Detail

      • $lessinit$greater$default$2

        public static boolean $lessinit$greater$default$2()
      • context

        public ActorContext context()
        Description copied from interface: Actor
        Scala API: Stores the context for this actor, including self, and sender. It is implicit to support operations such as forward.

        WARNING: Only valid within the Actor itself, so do not close over it and publish it to other threads!

        ActorContext is the Scala API. getContext returns a AbstractActor.ActorContext, which is the Java API of the actor context.

        Specified by:
        context in interface Actor
      • self

        public final ActorRef self()
        Description copied from interface: Actor
        The 'self' field holds the ActorRef for this actor.

        Can be used to send messages to itself:
         self ! message
         
        Specified by:
        self in interface Actor
      • akka$actor$Actor$_setter_$context_$eq

        protected void akka$actor$Actor$_setter_$context_$eq​(ActorContext x$1)
        Description copied from interface: Actor
        Scala API: Stores the context for this actor, including self, and sender. It is implicit to support operations such as forward.

        WARNING: Only valid within the Actor itself, so do not close over it and publish it to other threads!

        ActorContext is the Scala API. getContext returns a AbstractActor.ActorContext, which is the Java API of the actor context.

        Specified by:
        akka$actor$Actor$_setter_$context_$eq in interface Actor
      • akka$actor$Actor$_setter_$self_$eq

        protected final void akka$actor$Actor$_setter_$self_$eq​(ActorRef x$1)
        Description copied from interface: Actor
        The 'self' field holds the ActorRef for this actor.

        Can be used to send messages to itself:
         self ! message
         
        Specified by:
        akka$actor$Actor$_setter_$self_$eq in interface Actor
      • preStart

        public void preStart()
        Description copied from interface: Actor
        User overridable callback.

        Is called when an Actor is started. Actors are automatically started asynchronously when created. Empty default implementation.
        Specified by:
        preStart in interface Actor
      • receive

        public scala.PartialFunction<java.lang.Object,​scala.runtime.BoxedUnit> receive()
        Description copied from interface: Actor
        Scala API: This defines the initial actor behavior, it must return a partial function with the actor logic.
        Specified by:
        receive in interface Actor