final class ClusterReceptionist extends Actor with ActorLogging

ClusterClient connects to this actor to retrieve. The ClusterReceptionist is supposed to be started on all nodes, or all nodes with specified role, in the cluster. The receptionist can be started with the ClusterClientReceptionist or as an ordinary actor (use the factory method ClusterReceptionist#props).

The receptionist forwards messages from the client to the associated pekko.cluster.pubsub.DistributedPubSubMediator, i.e. the client can send messages to any actor in the cluster that is registered in the DistributedPubSubMediator. Messages from the client are wrapped in pekko.cluster.pubsub.DistributedPubSubMediator.Send, pekko.cluster.pubsub.DistributedPubSubMediator.SendToAll or pekko.cluster.pubsub.DistributedPubSubMediator.Publish with the semantics described in pekko.cluster.pubsub.DistributedPubSubMediator.

Response messages from the destination actor are tunneled via the receptionist to avoid inbound connections from other cluster nodes to the client, i.e. the sender(), as seen by the destination actor, is not the client itself. The sender() of the response messages, as seen by the client, is deadLetters since the client should normally send subsequent messages via the ClusterClient. It is possible to pass the original sender inside the reply messages if the client is supposed to communicate directly to the actor in the cluster.

Annotations
@deprecated
Deprecated

(Since version Akka 2.6.0) Use Apache Pekko gRPC instead, see https://pekko.apache.org/docs/pekko/current/cluster-client.html#migration-to-pekko-grpc

Source
ClusterClient.scala
Linear Supertypes
ActorLogging, Actor, AnyRef, Any
Type Hierarchy
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  2. By Inheritance
Inherited
  1. ClusterReceptionist
  2. ActorLogging
  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. Protected

Instance Constructors

  1. new ClusterReceptionist(pubSubMediator: ActorRef, settings: ClusterReceptionistSettings)

Type Members

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

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 ClusterReceptionist toany2stringadd[ClusterReceptionist] performed by method any2stringadd in scala.Predef.
    Definition Classes
    any2stringadd
  4. def ->[B](y: B): (ClusterReceptionist, B)
    Implicit
    This member is added by an implicit conversion from ClusterReceptionist toArrowAssoc[ClusterReceptionist] performed by method ArrowAssoc in scala.Predef.
    Definition Classes
    ArrowAssoc
    Annotations
    @inline()
  5. final def ==(arg0: Any): Boolean
    Definition Classes
    AnyRef → Any
  6. def aroundPostRestart(reason: Throwable): Unit

    INTERNAL API.

    INTERNAL API.

    Can be overridden to intercept calls to postRestart. Calls postRestart by default.

    Attributes
    protected[pekko]
    Definition Classes
    Actor
    Annotations
    @InternalApi()
  7. def aroundPostStop(): Unit

    INTERNAL API.

    INTERNAL API.

    Can be overridden to intercept calls to postStop. Calls postStop by default.

    Attributes
    protected[pekko]
    Definition Classes
    Actor
    Annotations
    @InternalApi()
  8. def aroundPreRestart(reason: Throwable, message: Option[Any]): Unit

    INTERNAL API.

    INTERNAL API.

    Can be overridden to intercept calls to preRestart. Calls preRestart by default.

    Attributes
    protected[pekko]
    Definition Classes
    Actor
    Annotations
    @InternalApi()
  9. def aroundPreStart(): Unit

    INTERNAL API.

    INTERNAL API.

    Can be overridden to intercept calls to preStart. Calls preStart by default.

    Attributes
    protected[pekko]
    Definition Classes
    Actor
    Annotations
    @InternalApi()
  10. def aroundReceive(receive: actor.Actor.Receive, msg: Any): Unit

    INTERNAL API.

    INTERNAL API.

    Can be overridden to intercept calls to this actor's current behavior.

    receive

    current behavior.

    msg

    current message.

    Attributes
    protected[pekko]
    Definition Classes
    Actor
    Annotations
    @InternalApi()
  11. final def asInstanceOf[T0]: T0
    Definition Classes
    Any
  12. val checkDeadlinesTask: Cancellable
  13. var clientInteractions: HashMap[ActorRef, DeadlineFailureDetector]
  14. var clientsPublished: HashSet[ActorRef]
  15. def clone(): AnyRef
    Attributes
    protected[lang]
    Definition Classes
    AnyRef
    Annotations
    @throws(classOf[java.lang.CloneNotSupportedException]) @HotSpotIntrinsicCandidate() @native()
  16. val cluster: Cluster
  17. var consistentHash: ConsistentHash[Address]
  18. implicit val context: ActorContext

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

    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!

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

    Definition Classes
    Actor
  19. def ensuring(cond: (ClusterReceptionist) => Boolean, msg: => Any): ClusterReceptionist
    Implicit
    This member is added by an implicit conversion from ClusterReceptionist toEnsuring[ClusterReceptionist] performed by method Ensuring in scala.Predef.
    Definition Classes
    Ensuring
  20. def ensuring(cond: (ClusterReceptionist) => Boolean): ClusterReceptionist
    Implicit
    This member is added by an implicit conversion from ClusterReceptionist toEnsuring[ClusterReceptionist] performed by method Ensuring in scala.Predef.
    Definition Classes
    Ensuring
  21. def ensuring(cond: Boolean, msg: => Any): ClusterReceptionist
    Implicit
    This member is added by an implicit conversion from ClusterReceptionist toEnsuring[ClusterReceptionist] performed by method Ensuring in scala.Predef.
    Definition Classes
    Ensuring
  22. def ensuring(cond: Boolean): ClusterReceptionist
    Implicit
    This member is added by an implicit conversion from ClusterReceptionist toEnsuring[ClusterReceptionist] performed by method Ensuring in scala.Predef.
    Definition Classes
    Ensuring
  23. final def eq(arg0: AnyRef): Boolean
    Definition Classes
    AnyRef
  24. def equals(arg0: AnyRef): Boolean
    Definition Classes
    AnyRef → Any
  25. final def getClass(): Class[_ <: AnyRef]
    Definition Classes
    AnyRef → Any
    Annotations
    @HotSpotIntrinsicCandidate() @native()
  26. def hashCode(): Int
    Definition Classes
    AnyRef → Any
    Annotations
    @HotSpotIntrinsicCandidate() @native()
  27. final def isInstanceOf[T0]: Boolean
    Definition Classes
    Any
  28. def log: LoggingAdapter
    Definition Classes
    ActorLogging
  29. def matchingRole(m: Member): Boolean
  30. final def ne(arg0: AnyRef): Boolean
    Definition Classes
    AnyRef
  31. var nodes: SortedSet[Address]
  32. final def notify(): Unit
    Definition Classes
    AnyRef
    Annotations
    @HotSpotIntrinsicCandidate() @native()
  33. final def notifyAll(): Unit
    Definition Classes
    AnyRef
    Annotations
    @HotSpotIntrinsicCandidate() @native()
  34. 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])
  35. def postStop(): Unit

    User overridable callback.

    User overridable callback.

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

    Definition Classes
    ClusterReceptionist → Actor
  36. def preRestart(reason: Throwable, message: Option[Any]): Unit

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

    Scala API: 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])
  37. def preStart(): Unit

    User overridable callback.

    User overridable callback.

    Is called when an Actor is started. Actors are automatically started asynchronously when created. Empty default implementation.

    Definition Classes
    ClusterReceptionist → Actor
  38. def publishClientsUnreachable(): Unit
  39. def receive: PartialFunction[Any, Unit]

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

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

    Definition Classes
    ClusterReceptionist → Actor
  40. def responseTunnel(client: ActorRef): ActorRef
  41. 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
  42. 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 pekko.actor.ActorSystem.

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

    Definition Classes
    Actor
  43. var subscribers: Vector[ActorRef]
  44. def supervisorStrategy: SupervisorStrategy

    User overridable definition the strategy to use for supervising child actors.

    User overridable definition the strategy to use for supervising child actors.

    Definition Classes
    Actor
  45. final def synchronized[T0](arg0: => T0): T0
    Definition Classes
    AnyRef
  46. def toString(): String
    Definition Classes
    AnyRef → Any
  47. 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 pekko.actor.DeathPactException (in case of an unhandled pekko.actor.Terminated message) or publishes an pekko.actor.UnhandledMessage to the actor's system's pekko.event.EventStream

    Definition Classes
    Actor
  48. def updateClientInteractions(client: ActorRef): Unit
  49. val verboseHeartbeat: Boolean
  50. val virtualNodesFactor: Int
  51. final def wait(arg0: Long, arg1: Int): Unit
    Definition Classes
    AnyRef
    Annotations
    @throws(classOf[java.lang.InterruptedException])
  52. final def wait(arg0: Long): Unit
    Definition Classes
    AnyRef
    Annotations
    @throws(classOf[java.lang.InterruptedException]) @native()
  53. final def wait(): Unit
    Definition Classes
    AnyRef
    Annotations
    @throws(classOf[java.lang.InterruptedException])

Deprecated Value Members

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

    (Since version 9)

  2. def formatted(fmtstr: String): String
    Implicit
    This member is added by an implicit conversion from ClusterReceptionist toStringFormat[ClusterReceptionist] performed by method StringFormat in scala.Predef.
    Definition Classes
    StringFormat
    Annotations
    @deprecated @inline()
    Deprecated

    (Since version 2.12.16) Use formatString.format(value) instead of value.formatted(formatString), or use the f"" string interpolator. In Java 15 and later, formatted resolves to the new method in String which has reversed parameters.

  3. def →[B](y: B): (ClusterReceptionist, B)
    Implicit
    This member is added by an implicit conversion from ClusterReceptionist toArrowAssoc[ClusterReceptionist] performed by method ArrowAssoc in scala.Predef.
    Definition Classes
    ArrowAssoc
    Annotations
    @deprecated
    Deprecated

    (Since version 2.13.0) Use -> instead. If you still wish to display it as one character, consider using a font with programming ligatures such as Fira Code.

Inherited from ActorLogging

Inherited from Actor

Inherited from AnyRef

Inherited from Any

Inherited by implicit conversion any2stringadd fromClusterReceptionist to any2stringadd[ClusterReceptionist]

Inherited by implicit conversion StringFormat fromClusterReceptionist to StringFormat[ClusterReceptionist]

Inherited by implicit conversion Ensuring fromClusterReceptionist to Ensuring[ClusterReceptionist]

Inherited by implicit conversion ArrowAssoc fromClusterReceptionist to ArrowAssoc[ClusterReceptionist]

Ungrouped