Class

akka.actor

OneForOneStrategy

Related Doc: package actor

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case class OneForOneStrategy(maxNrOfRetries: Int = 1, withinTimeRange: Duration = Duration.Inf, loggingEnabled: Boolean = true)(decider: Decider) extends SupervisorStrategy with Product with Serializable

Applies the fault handling Directive (Resume, Restart, Stop) specified in the Decider to the child actor that failed, as opposed to akka.actor.AllForOneStrategy that applies it to all children.

maxNrOfRetries

the number of times a child actor is allowed to be restarted, negative value means no limit, if the limit is exceeded the child actor is stopped

withinTimeRange

duration of the time window for maxNrOfRetries, Duration.Inf means no window

loggingEnabled

the strategy logs the failure if this is enabled (true), by default it is enabled

decider

mapping from Throwable to akka.actor.SupervisorStrategy.Directive, you can also use a scala.collection.immutable.Seq of Throwables which maps the given Throwables to restarts, otherwise escalates.

Source
FaultHandling.scala
Linear Supertypes
Serializable, Serializable, Product, Equals, SupervisorStrategy, AnyRef, Any
Type Hierarchy
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Inherited
  1. OneForOneStrategy
  2. Serializable
  3. Serializable
  4. Product
  5. Equals
  6. SupervisorStrategy
  7. AnyRef
  8. 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 OneForOneStrategy(decider: Decider)

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    Java API: compatible with lambda expressions

  2. new OneForOneStrategy(loggingEnabled: Boolean, decider: Decider)

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  3. new OneForOneStrategy(maxNrOfRetries: Int, withinTimeRange: Duration, decider: Decider)

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    Java API: compatible with lambda expressions

  4. new OneForOneStrategy(maxNrOfRetries: Int, withinTimeRange: Duration, decider: Decider)

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    Java API: compatible with lambda expressions

  5. new OneForOneStrategy(maxNrOfRetries: Int, withinTimeRange: Duration, trapExit: Iterable[Class[_ <: Throwable]])

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    Java API

  6. new OneForOneStrategy(maxNrOfRetries: Int, withinTimeRange: Duration, trapExit: Iterable[Class[_ <: Throwable]])

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    Java API

  7. new OneForOneStrategy(maxNrOfRetries: Int, withinTimeRange: Duration, decider: JDecider)

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    Java API

  8. new OneForOneStrategy(maxNrOfRetries: Int, withinTimeRange: Duration, decider: JDecider)

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    Java API

  9. new OneForOneStrategy(maxNrOfRetries: Int, withinTimeRange: Duration, decider: JDecider, loggingEnabled: Boolean)

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    Java API

  10. new OneForOneStrategy(maxNrOfRetries: Int, withinTimeRange: Duration, decider: JDecider, loggingEnabled: Boolean)

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    Java API

  11. new OneForOneStrategy(maxNrOfRetries: Int = 1, withinTimeRange: Duration = Duration.Inf, loggingEnabled: Boolean = true)(decider: Decider)

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    maxNrOfRetries

    the number of times a child actor is allowed to be restarted, negative value means no limit, if the limit is exceeded the child actor is stopped

    withinTimeRange

    duration of the time window for maxNrOfRetries, Duration.Inf means no window

    loggingEnabled

    the strategy logs the failure if this is enabled (true), by default it is enabled

    decider

    mapping from Throwable to akka.actor.SupervisorStrategy.Directive, you can also use a scala.collection.immutable.Seq of Throwables which maps the given Throwables to restarts, otherwise escalates.

Value Members

  1. final def !=(arg0: Any): Boolean

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    Definition Classes
    AnyRef → Any
  2. final def ##(): Int

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    Definition Classes
    AnyRef → Any
  3. def +(other: String): String

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    Implicit information
    This member is added by an implicit conversion from OneForOneStrategy to any2stringadd[OneForOneStrategy] performed by method any2stringadd in scala.Predef.
    Definition Classes
    any2stringadd
  4. def ->[B](y: B): (OneForOneStrategy, B)

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    Implicit information
    This member is added by an implicit conversion from OneForOneStrategy to ArrowAssoc[OneForOneStrategy] performed by method ArrowAssoc in scala.Predef.
    Definition Classes
    ArrowAssoc
    Annotations
    @inline()
  5. final def ==(arg0: Any): Boolean

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    Definition Classes
    AnyRef → Any
  6. final def asInstanceOf[T0]: T0

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    Definition Classes
    Any
  7. def clone(): AnyRef

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    Attributes
    protected[java.lang]
    Definition Classes
    AnyRef
    Annotations
    @throws( ... )
  8. val decider: Decider

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    mapping from Throwable to akka.actor.SupervisorStrategy.Directive, you can also use a scala.collection.immutable.Seq of Throwables which maps the given Throwables to restarts, otherwise escalates.

    mapping from Throwable to akka.actor.SupervisorStrategy.Directive, you can also use a scala.collection.immutable.Seq of Throwables which maps the given Throwables to restarts, otherwise escalates.

    Definition Classes
    OneForOneStrategySupervisorStrategy
  9. def ensuring(cond: (OneForOneStrategy) ⇒ Boolean, msg: ⇒ Any): OneForOneStrategy

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    Implicit information
    This member is added by an implicit conversion from OneForOneStrategy to Ensuring[OneForOneStrategy] performed by method Ensuring in scala.Predef.
    Definition Classes
    Ensuring
  10. def ensuring(cond: (OneForOneStrategy) ⇒ Boolean): OneForOneStrategy

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    Implicit information
    This member is added by an implicit conversion from OneForOneStrategy to Ensuring[OneForOneStrategy] performed by method Ensuring in scala.Predef.
    Definition Classes
    Ensuring
  11. def ensuring(cond: Boolean, msg: ⇒ Any): OneForOneStrategy

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    Implicit information
    This member is added by an implicit conversion from OneForOneStrategy to Ensuring[OneForOneStrategy] performed by method Ensuring in scala.Predef.
    Definition Classes
    Ensuring
  12. def ensuring(cond: Boolean): OneForOneStrategy

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    Implicit information
    This member is added by an implicit conversion from OneForOneStrategy to Ensuring[OneForOneStrategy] performed by method Ensuring in scala.Predef.
    Definition Classes
    Ensuring
  13. final def eq(arg0: AnyRef): Boolean

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    Definition Classes
    AnyRef
  14. def finalize(): Unit

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    Attributes
    protected[java.lang]
    Definition Classes
    AnyRef
    Annotations
    @throws( classOf[java.lang.Throwable] )
  15. def formatted(fmtstr: String): String

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    Implicit information
    This member is added by an implicit conversion from OneForOneStrategy to StringFormat[OneForOneStrategy] performed by method StringFormat in scala.Predef.
    Definition Classes
    StringFormat
    Annotations
    @inline()
  16. final def getClass(): Class[_]

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    Definition Classes
    AnyRef → Any
  17. def handleChildTerminated(context: ActorContext, child: ActorRef, children: Iterable[ActorRef]): Unit

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    This method is called after the child has been removed from the set of children.

    This method is called after the child has been removed from the set of children. It does not need to do anything special. Exceptions thrown from this method do NOT make the actor fail if this happens during termination.

    Definition Classes
    OneForOneStrategySupervisorStrategy
  18. def handleFailure(context: ActorContext, child: ActorRef, cause: Throwable, stats: ChildRestartStats, children: Iterable[ChildRestartStats]): Boolean

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    This is the main entry point: in case of a child’s failure, this method must try to handle the failure by resuming, restarting or stopping the child (and returning true), or it returns false to escalate the failure, which will lead to this actor re-throwing the exception which caused the failure.

    This is the main entry point: in case of a child’s failure, this method must try to handle the failure by resuming, restarting or stopping the child (and returning true), or it returns false to escalate the failure, which will lead to this actor re-throwing the exception which caused the failure. The exception will not be wrapped.

    This method calls akka.actor.SupervisorStrategy#logFailure, which will log the failure unless it is escalated. You can customize the logging by setting akka.actor.SupervisorStrategy#loggingEnabled to false and do the logging inside the decider or override the logFailure method.

    children

    is a lazy collection (a view)

    Definition Classes
    SupervisorStrategy
  19. final def isInstanceOf[T0]: Boolean

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    Definition Classes
    Any
  20. def logFailure(context: ActorContext, child: ActorRef, cause: Throwable, decision: Directive): Unit

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    Default logging of actor failures when akka.actor.SupervisorStrategy#loggingEnabled is true.

    Default logging of actor failures when akka.actor.SupervisorStrategy#loggingEnabled is true. Escalate failures are not logged here, since they are supposed to be handled at a level higher up in the hierarchy. Resume failures are logged at Warning level. Stop and Restart failures are logged at Error level.

    Definition Classes
    SupervisorStrategy
  21. val loggingEnabled: Boolean

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    the strategy logs the failure if this is enabled (true), by default it is enabled

    the strategy logs the failure if this is enabled (true), by default it is enabled

    Definition Classes
    OneForOneStrategySupervisorStrategy
  22. val maxNrOfRetries: Int

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    the number of times a child actor is allowed to be restarted, negative value means no limit, if the limit is exceeded the child actor is stopped

  23. final def ne(arg0: AnyRef): Boolean

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    Definition Classes
    AnyRef
  24. final def notify(): Unit

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    Definition Classes
    AnyRef
  25. final def notifyAll(): Unit

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    Definition Classes
    AnyRef
  26. def processFailure(context: ActorContext, restart: Boolean, child: ActorRef, cause: Throwable, stats: ChildRestartStats, children: Iterable[ChildRestartStats]): Unit

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    This method is called to act on the failure of a child: restart if the flag is true, stop otherwise.

    This method is called to act on the failure of a child: restart if the flag is true, stop otherwise.

    Definition Classes
    OneForOneStrategySupervisorStrategy
  27. final def restartChild(child: ActorRef, cause: Throwable, suspendFirst: Boolean): Unit

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    Restart the given child, possibly suspending it first.

    Restart the given child, possibly suspending it first.

    IMPORTANT:

    If the child is the currently failing one, it will already have been suspended, hence suspendFirst must be false. If the child is not the currently failing one, then it did not request this treatment and is therefore not prepared to be resumed without prior suspend.

    Definition Classes
    SupervisorStrategy
  28. final def resumeChild(child: ActorRef, cause: Throwable): Unit

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    Resume the previously failed child: do never apply this to a child which is not the currently failing child.

    Resume the previously failed child: do never apply this to a child which is not the currently failing child. Suspend/resume needs to be done in matching pairs, otherwise actors will wake up too soon or never at all.

    Definition Classes
    SupervisorStrategy
  29. final def synchronized[T0](arg0: ⇒ T0): T0

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    Definition Classes
    AnyRef
  30. final def wait(): Unit

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    Definition Classes
    AnyRef
    Annotations
    @throws( ... )
  31. final def wait(arg0: Long, arg1: Int): Unit

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    Definition Classes
    AnyRef
    Annotations
    @throws( ... )
  32. final def wait(arg0: Long): Unit

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    Definition Classes
    AnyRef
    Annotations
    @throws( ... )
  33. def withMaxNrOfRetries(maxNrOfRetries: Int): OneForOneStrategy

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  34. val withinTimeRange: Duration

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    duration of the time window for maxNrOfRetries, Duration.Inf means no window

  35. def [B](y: B): (OneForOneStrategy, B)

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    Implicit information
    This member is added by an implicit conversion from OneForOneStrategy to ArrowAssoc[OneForOneStrategy] performed by method ArrowAssoc in scala.Predef.
    Definition Classes
    ArrowAssoc

Inherited from Serializable

Inherited from Serializable

Inherited from Product

Inherited from Equals

Inherited from SupervisorStrategy

Inherited from AnyRef

Inherited from Any

Inherited by implicit conversion any2stringadd from OneForOneStrategy to any2stringadd[OneForOneStrategy]

Inherited by implicit conversion StringFormat from OneForOneStrategy to StringFormat[OneForOneStrategy]

Inherited by implicit conversion Ensuring from OneForOneStrategy to Ensuring[OneForOneStrategy]

Inherited by implicit conversion ArrowAssoc from OneForOneStrategy to ArrowAssoc[OneForOneStrategy]

Ungrouped