Packages

final class BackoffSupervisor extends Actor with HandleBackoff

Back-off supervisor that stops and starts a child actor using a back-off algorithm when the child actor stops. This back-off supervisor is created by using akka.pattern.BackoffSupervisor.props with Backoff.onStop.

Source
BackoffSupervisor.scala
Linear Supertypes
HandleBackoff, Actor, AnyRef, Any
Type Hierarchy
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Inherited
  1. BackoffSupervisor
  2. HandleBackoff
  3. Actor
  4. AnyRef
  5. Any
Implicitly
  1. by any2stringadd
  2. by StringFormat
  3. by Ensuring
  4. by ArrowAssoc
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Visibility
  1. Public
  2. All

Instance Constructors

  1. new BackoffSupervisor(childProps: Props, childName: String, minBackoff: FiniteDuration, maxBackoff: FiniteDuration, randomFactor: Double)
  2. new BackoffSupervisor(childProps: Props, childName: String, minBackoff: FiniteDuration, maxBackoff: FiniteDuration, randomFactor: Double, supervisorStrategy: SupervisorStrategy)
  3. new BackoffSupervisor(childProps: Props, childName: String, minBackoff: FiniteDuration, maxBackoff: FiniteDuration, reset: BackoffReset, randomFactor: Double, strategy: SupervisorStrategy)

Type Members

  1. type Receive = PartialFunction[Any, Unit]
    Definition Classes
    Actor

Value Members

  1. val child: Option[ActorRef]
    Definition Classes
    HandleBackoff
  2. val childName: String
    Definition Classes
    BackoffSupervisor → HandleBackoff
  3. val childProps: Props
    Definition Classes
    BackoffSupervisor → HandleBackoff
  4. implicit val context: ActorContext

    Stores the context for this actor, including self, and sender.

    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!

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

    Definition Classes
    Actor
  5. def handleBackoff: Receive
    Definition Classes
    HandleBackoff
  6. def onTerminated: Receive
  7. def postRestart(reason: Throwable): Unit

    User overridable callback: By default it calls preStart().

    User overridable callback: By default it calls preStart().

    reason

    the Throwable that caused the restart to happen Is called right AFTER restart on the newly created Actor to allow reinitialization after an Actor crash.

    Definition Classes
    Actor
    Annotations
    @throws( classOf[Exception] )
  8. def postStop(): Unit

    User overridable callback.

    User overridable callback.

    Is called asynchronously after 'actor.stop()' is invoked. Empty default implementation.

    Definition Classes
    Actor
    Annotations
    @throws( classOf[Exception] )
  9. def preRestart(reason: Throwable, message: Option[Any]): Unit

    User overridable callback: By default it disposes of all children and then calls postStop().

    User overridable callback: By default it disposes of all children and then calls postStop().

    reason

    the Throwable that caused the restart to happen

    message

    optionally the current message the actor processed when failing, if applicable Is called on a crashed Actor right BEFORE it is restarted to allow clean up of resources before Actor is terminated.

    Definition Classes
    Actor
    Annotations
    @throws( classOf[Exception] )
  10. def preStart(): Unit
    Definition Classes
    HandleBackoff
  11. def receive: PartialFunction[Any, Unit]

    This defines the initial actor behavior, it must return a partial function with the actor logic.

    This defines the initial actor behavior, it must return a partial function with the actor logic.

    Definition Classes
    BackoffSupervisor → Actor
  12. val reset: BackoffReset
    Definition Classes
    BackoffSupervisor → HandleBackoff
  13. val restartCount: Int
    Definition Classes
    HandleBackoff
  14. implicit final val self: ActorRef

    The 'self' field holds the ActorRef for this actor.

    The 'self' field holds the ActorRef for this actor.

    Can be used to send messages to itself: 

    self ! message

    Definition Classes
    Actor
  15. final def sender(): ActorRef

    The reference sender Actor of the last received message.

    The reference sender Actor of the last received message. Is defined if the message was sent from another Actor, else deadLetters in akka.actor.ActorSystem.

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

    Definition Classes
    Actor
  16. def startChild(): Unit
    Definition Classes
    HandleBackoff
  17. val supervisorStrategy: SupervisorStrategy
    Definition Classes
    BackoffSupervisor → Actor
  18. def unhandled(message: Any): Unit

    User overridable callback.

    User overridable callback.

    Is called when a message isn't handled by the current behavior of the actor by default it fails with either a akka.actor.DeathPactException (in case of an unhandled akka.actor.Terminated message) or publishes an akka.actor.UnhandledMessage to the actor's system's akka.event.EventStream

    Definition Classes
    Actor