c

akka.routing

TailChoppingGroup

final case class TailChoppingGroup(paths: Iterable[String], within: FiniteDuration, interval: FiniteDuration, routerDispatcher: String = Dispatchers.DefaultDispatcherId) extends Group with Product with Serializable

A router group 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 group, 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 group 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 paths during instantiation they will be ignored if the router is defined in the configuration file for the actor being used.

paths

string representation of the actor paths of the routees, messages are sent with akka.actor.ActorSelection to these paths

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

routerDispatcher

dispatcher to use for the router head actor, which handles router management messages

Source
TailChopping.scala
Linear Supertypes
Product, Equals, Group, RouterConfig, Serializable, Serializable, AnyRef, Any
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  1. TailChoppingGroup
  2. Product
  3. Equals
  4. Group
  5. RouterConfig
  6. Serializable
  7. Serializable
  8. AnyRef
  9. Any
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  1. by any2stringadd
  2. by StringFormat
  3. by Ensuring
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Instance Constructors

  1. new TailChoppingGroup(routeePaths: Iterable[String], within: Duration, interval: Duration)

    Java API

    Java API

    routeePaths

    string representation of the actor paths of the routees, messages are sent with akka.actor.ActorSelection to these paths

    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 TailChoppingGroup(routeePaths: Iterable[String], within: FiniteDuration, interval: FiniteDuration)

    Java API

    Java API

    routeePaths

    string representation of the actor paths of the routees, messages are sent with akka.actor.ActorSelection to these paths

    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 TailChoppingGroup(config: Config)
  4. new TailChoppingGroup(paths: Iterable[String], within: FiniteDuration, interval: FiniteDuration, routerDispatcher: String = Dispatchers.DefaultDispatcherId)

    paths

    string representation of the actor paths of the routees, messages are sent with akka.actor.ActorSelection to these paths

    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

    routerDispatcher

    dispatcher to use for the router head actor, which handles router management messages

Value Members

  1. 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
    TailChoppingGroup → RouterConfig
  2. val interval: FiniteDuration
  3. 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
  4. def paths(system: ActorSystem): Iterable[String]
    Definition Classes
    TailChoppingGroup → Group
  5. val paths: Iterable[String]
  6. def props(): Props

    akka.actor.Props for a group router based on the settings defined by this instance.

    akka.actor.Props for a group router based on the settings defined by this instance.

    Definition Classes
    Group
  7. 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
    TailChoppingGroup → RouterConfig
  8. 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
  9. def stopRouterWhenAllRouteesRemoved: Boolean
    Definition Classes
    RouterConfig
  10. 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
  11. def withDispatcher(dispatcherId: String): TailChoppingGroup

    Setting the dispatcher to be used for the router head actor, which handles router management messages

  12. def withFallback(other: RouterConfig): RouterConfig

    Overridable merge strategy, by default completely prefers this (i.e.

    Overridable merge strategy, by default completely prefers this (i.e. no merge).

    Definition Classes
    RouterConfig
  13. val within: FiniteDuration