c

akka.routing

TailChoppingPool

final case class TailChoppingPool(nrOfInstances: Int, resizer: Option[Resizer] = None, within: FiniteDuration, interval: FiniteDuration, supervisorStrategy: SupervisorStrategy = Pool.defaultSupervisorStrategy, routerDispatcher: String = Dispatchers.DefaultDispatcherId, usePoolDispatcher: Boolean = false) extends Pool with PoolOverrideUnsetConfig[TailChoppingPool] with Product with Serializable

A router pool with retry logic, intended for cases where a return message is expected in response to a message sent to the routee. As each message is sent to the routing pool, the routees are randomly ordered. The message is sent to the first routee. If no response is received before the interval has passed, the same message is sent to the next routee. This process repeats until either a response is received from some routee, the routees in the pool are exhausted, or the within duration has passed since the first send. If no routee sends a response in time, a akka.actor.Status.Failure wrapping a akka.pattern.AskTimeoutException is sent to the sender.

Refer to akka.routing.TailChoppingRoutingLogic for comments regarding the goal of this routing algorithm.

The configuration parameter trumps the constructor arguments. This means that if you provide nrOfInstances during instantiation they will be ignored if the router is defined in the configuration file for the actor being used.

Supervision Setup

Any routees that are created by a router will be created as the router's children. The router is therefore also the children's supervisor.

The supervision strategy of the router actor can be configured with #withSupervisorStrategy. If no strategy is provided, routers default to a strategy of “always escalate”. This means that errors are passed up to the router's supervisor for handling.

The router's supervisor will treat the error as an error with the router itself. Therefore a directive to stop or restart will cause the router itself to stop or restart. The router, in turn, will cause its children to stop and restart.

nrOfInstances

initial number of routees in the pool

resizer

optional resizer that dynamically adjust the pool size

within

expecting at least one reply within this duration, otherwise it will reply with akka.pattern.AskTimeoutException in a akka.actor.Status.Failure

interval

duration after which the message will be sent to the next routee

supervisorStrategy

strategy for supervising the routees, see 'Supervision Setup'

routerDispatcher

dispatcher to use for the router head actor, which handles supervision, death watch and router management messages

Annotations
@SerialVersionUID()
Source
TailChopping.scala
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Inherited
  1. TailChoppingPool
  2. Product
  3. Equals
  4. PoolOverrideUnsetConfig
  5. Pool
  6. RouterConfig
  7. Serializable
  8. Serializable
  9. AnyRef
  10. Any
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  1. by any2stringadd
  2. by StringFormat
  3. by Ensuring
  4. by ArrowAssoc
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Instance Constructors

  1. new TailChoppingPool(nr: Int, within: Duration, interval: Duration)

    Java API

    Java API

    nr

    initial number of routees in the pool

    within

    expecting at least one reply within this duration, otherwise it will reply with akka.pattern.AskTimeoutException in a akka.actor.Status.Failure

    interval

    duration after which next routee will be picked

  2. new TailChoppingPool(nr: Int, within: FiniteDuration, interval: FiniteDuration)

    Java API

    Java API

    nr

    initial number of routees in the pool

    within

    expecting at least one reply within this duration, otherwise it will reply with akka.pattern.AskTimeoutException in a akka.actor.Status.Failure

    interval

    duration after which next routee will be picked

  3. new TailChoppingPool(config: Config)
  4. new TailChoppingPool(nrOfInstances: Int, resizer: Option[Resizer] = None, within: FiniteDuration, interval: FiniteDuration, supervisorStrategy: SupervisorStrategy = Pool.defaultSupervisorStrategy, routerDispatcher: String = Dispatchers.DefaultDispatcherId, usePoolDispatcher: Boolean = false)

    nrOfInstances

    initial number of routees in the pool

    resizer

    optional resizer that dynamically adjust the pool size

    within

    expecting at least one reply within this duration, otherwise it will reply with akka.pattern.AskTimeoutException in a akka.actor.Status.Failure

    interval

    duration after which the message will be sent to the next routee

    supervisorStrategy

    strategy for supervising the routees, see 'Supervision Setup'

    routerDispatcher

    dispatcher to use for the router head actor, which handles supervision, death watch and router management messages

Value Members

  1. final def !=(arg0: Any): Boolean
    Definition Classes
    AnyRef → Any
  2. final def ##(): Int
    Definition Classes
    AnyRef → Any
  3. def +(other: String): String
    Implicit
    This member is added by an implicit conversion from TailChoppingPool to any2stringadd[TailChoppingPool] performed by method any2stringadd in scala.Predef.
    Definition Classes
    any2stringadd
  4. def ->[B](y: B): (TailChoppingPool, B)
    Implicit
    This member is added by an implicit conversion from TailChoppingPool to ArrowAssoc[TailChoppingPool] performed by method ArrowAssoc in scala.Predef.
    Definition Classes
    ArrowAssoc
    Annotations
    @inline()
  5. final def ==(arg0: Any): Boolean
    Definition Classes
    AnyRef → Any
  6. final def asInstanceOf[T0]: T0
    Definition Classes
    Any
  7. def clone(): AnyRef
    Attributes
    protected[lang]
    Definition Classes
    AnyRef
    Annotations
    @throws( ... ) @native() @HotSpotIntrinsicCandidate()
  8. def createRouter(system: ActorSystem): Router

    Create the actual router, responsible for routing messages to routees.

    Create the actual router, responsible for routing messages to routees.

    system

    the ActorSystem this router belongs to

    Definition Classes
    TailChoppingPoolRouterConfig
  9. def ensuring(cond: (TailChoppingPool) ⇒ Boolean, msg: ⇒ Any): TailChoppingPool
    Implicit
    This member is added by an implicit conversion from TailChoppingPool to Ensuring[TailChoppingPool] performed by method Ensuring in scala.Predef.
    Definition Classes
    Ensuring
  10. def ensuring(cond: (TailChoppingPool) ⇒ Boolean): TailChoppingPool
    Implicit
    This member is added by an implicit conversion from TailChoppingPool to Ensuring[TailChoppingPool] performed by method Ensuring in scala.Predef.
    Definition Classes
    Ensuring
  11. def ensuring(cond: Boolean, msg: ⇒ Any): TailChoppingPool
    Implicit
    This member is added by an implicit conversion from TailChoppingPool to Ensuring[TailChoppingPool] performed by method Ensuring in scala.Predef.
    Definition Classes
    Ensuring
  12. def ensuring(cond: Boolean): TailChoppingPool
    Implicit
    This member is added by an implicit conversion from TailChoppingPool to Ensuring[TailChoppingPool] performed by method Ensuring in scala.Predef.
    Definition Classes
    Ensuring
  13. final def eq(arg0: AnyRef): Boolean
    Definition Classes
    AnyRef
  14. def formatted(fmtstr: String): String
    Implicit
    This member is added by an implicit conversion from TailChoppingPool to StringFormat[TailChoppingPool] performed by method StringFormat in scala.Predef.
    Definition Classes
    StringFormat
    Annotations
    @inline()
  15. final def getClass(): Class[_]
    Definition Classes
    AnyRef → Any
    Annotations
    @native() @HotSpotIntrinsicCandidate()
  16. val interval: FiniteDuration
  17. final def isInstanceOf[T0]: Boolean
    Definition Classes
    Any
  18. def isManagementMessage(msg: Any): Boolean

    Is the message handled by the router head actor or the #routingLogicController actor.

    Is the message handled by the router head actor or the #routingLogicController actor.

    Definition Classes
    RouterConfig
  19. final def ne(arg0: AnyRef): Boolean
    Definition Classes
    AnyRef
  20. final def notify(): Unit
    Definition Classes
    AnyRef
    Annotations
    @native() @HotSpotIntrinsicCandidate()
  21. final def notifyAll(): Unit
    Definition Classes
    AnyRef
    Annotations
    @native() @HotSpotIntrinsicCandidate()
  22. def nrOfInstances(sys: ActorSystem): Int
    Definition Classes
    TailChoppingPoolPool
  23. val nrOfInstances: Int
  24. final def overrideUnsetConfig(other: RouterConfig): RouterConfig
    Definition Classes
    PoolOverrideUnsetConfig
  25. def props(routeeProps: Props): Props

    akka.actor.Props for a pool router based on the settings defined by this instance and the supplied akka.actor.Props for the routees created by the router.

    akka.actor.Props for a pool router based on the settings defined by this instance and the supplied akka.actor.Props for the routees created by the router.

    Definition Classes
    Pool
  26. val resizer: Option[Resizer]

    Pool with dynamically resizable number of routees return the akka.routing.Resizer to use.

    Pool with dynamically resizable number of routees return the akka.routing.Resizer to use. The resizer is invoked once when the router is created, before any messages can be sent to it. Resize is also triggered when messages are sent to the routees, and the resizer is invoked asynchronously, i.e. not necessarily before the message has been sent.

    Definition Classes
    TailChoppingPoolPool
  27. val routerDispatcher: String

    Dispatcher ID to use for running the “head” actor, which handles supervision, death watch and router management messages

    Dispatcher ID to use for running the “head” actor, which handles supervision, death watch and router management messages

    Definition Classes
    TailChoppingPoolRouterConfig
  28. def routingLogicController(routingLogic: RoutingLogic): Option[Props]

    Possibility to define an actor for controlling the routing logic from external stimuli (e.g.

    Possibility to define an actor for controlling the routing logic from external stimuli (e.g. monitoring metrics). This actor will be a child of the router "head" actor. Management messages not handled by the "head" actor are delegated to this controller actor.

    Definition Classes
    RouterConfig
  29. def stopRouterWhenAllRouteesRemoved: Boolean
    Definition Classes
    PoolRouterConfig
  30. val supervisorStrategy: SupervisorStrategy

    SupervisorStrategy for the head actor, i.e.

    SupervisorStrategy for the head actor, i.e. for supervising the routees of the pool.

    Definition Classes
    TailChoppingPoolPool
  31. final def synchronized[T0](arg0: ⇒ T0): T0
    Definition Classes
    AnyRef
  32. val usePoolDispatcher: Boolean

    Use a dedicated dispatcher for the routees of the pool.

    Use a dedicated dispatcher for the routees of the pool. The dispatcher is defined in 'pool-dispatcher' configuration property in the deployment section of the router.

    Definition Classes
    TailChoppingPoolPool
  33. def verifyConfig(path: ActorPath): Unit

    Check that everything is there which is needed.

    Check that everything is there which is needed. Called in constructor of RoutedActorRef to fail early.

    Definition Classes
    RouterConfig
  34. final def wait(arg0: Long, arg1: Int): Unit
    Definition Classes
    AnyRef
    Annotations
    @throws( ... )
  35. final def wait(arg0: Long): Unit
    Definition Classes
    AnyRef
    Annotations
    @throws( ... ) @native()
  36. final def wait(): Unit
    Definition Classes
    AnyRef
    Annotations
    @throws( ... )
  37. def withDispatcher(dispatcherId: String): TailChoppingPool

    Setting the dispatcher to be used for the router head actor, which handles supervision, death watch and router management messages.

  38. def withFallback(other: RouterConfig): RouterConfig

    Uses the resizer and/or the supervisor strategy of the given RouterConfig if this RouterConfig doesn't have one, i.e.

    Uses the resizer and/or the supervisor strategy of the given RouterConfig if this RouterConfig doesn't have one, i.e. the resizer defined in code is used if resizer was not defined in config.

    Definition Classes
    TailChoppingPoolRouterConfig
  39. def withResizer(resizer: Resizer): TailChoppingPool

    Setting the resizer to be used.

    Setting the resizer to be used.

    Definition Classes
    TailChoppingPool → PoolOverrideUnsetConfig
  40. def withSupervisorStrategy(strategy: SupervisorStrategy): TailChoppingPool

    Setting the supervisor strategy to be used for the “head” Router actor.

    Setting the supervisor strategy to be used for the “head” Router actor.

    Definition Classes
    TailChoppingPool → PoolOverrideUnsetConfig
  41. val within: FiniteDuration
  42. def [B](y: B): (TailChoppingPool, B)
    Implicit
    This member is added by an implicit conversion from TailChoppingPool to ArrowAssoc[TailChoppingPool] performed by method ArrowAssoc in scala.Predef.
    Definition Classes
    ArrowAssoc

Deprecated Value Members

  1. def finalize(): Unit
    Attributes
    protected[lang]
    Definition Classes
    AnyRef
    Annotations
    @throws( classOf[java.lang.Throwable] ) @Deprecated @deprecated
    Deprecated

    (Since version ) see corresponding Javadoc for more information.

Inherited from Product

Inherited from Equals

Inherited from PoolOverrideUnsetConfig[TailChoppingPool]

Inherited from Pool

Inherited from RouterConfig

Inherited from Serializable

Inherited from Serializable

Inherited from AnyRef

Inherited from Any

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

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

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

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

Ungrouped