akka.cluster

Class JoinSeedNodeProcess

java.lang.Object

akka.cluster.JoinSeedNodeProcess

All Implemented Interfaces:

Actor, ActorLogging

public final class JoinSeedNodeProcess
extends java.lang.Object
implements Actor, ActorLogging

INTERNAL API.

Sends InitJoin to all seed nodes (except itself) and expect InitJoinAck reply back. The seed node that replied first will be used, joined to. InitJoinAck replies received after the first one are ignored.

Retries if no InitJoinAck replies are received within the SeedNodeTimeout. When at least one reply has been received it stops itself after an idle SeedNodeTimeout.

The seed nodes can be started in any order, but they will not be "active", until they have been able to join another seed node (seed1). They will retry the join procedure. So one possible startup scenario is: 1. seed2 started, but doesn't get any ack from seed1 or seed3 2. seed3 started, doesn't get any ack from seed1 or seed3 (seed2 doesn't reply) 3. seed1 is started and joins itself 4. seed2 retries the join procedure and gets an ack from seed1, and then joins to seed1 5. seed3 retries the join procedure and gets acks from seed2 first, and then joins to seed2

Nested Class Summary

Nested classes/interfaces inherited from interface akka.actor.Actor

Actor.emptyBehavior$, Actor.ignoringBehavior$

Constructor Summary

Constructors

Constructor and Description
JoinSeedNodeProcess(scala.collection.immutable.IndexedSeq<Address> seedNodes)

Method Summary

Modifier and Type	Method and Description
int	attempt()
ActorContext	context() Stores the context for this actor, including self, and sender.
scala.PartialFunction<java.lang.Object,scala.runtime.BoxedUnit>	done()
void	preStart() User overridable callback.
scala.PartialFunction<java.lang.Object,scala.runtime.BoxedUnit>	receive() This defines the initial actor behavior, it must return a partial function with the actor logic.
ActorRef	self() The 'self' field holds the ActorRef for this actor.
Address	selfAddress()

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Methods inherited from interface akka.actor.Actor

aroundPostRestart, aroundPostStop, aroundPreRestart, aroundPreStart, aroundReceive, postRestart, postStop, preRestart, sender, supervisorStrategy, unhandled

Methods inherited from interface akka.actor.ActorLogging

log

Constructor Detail

JoinSeedNodeProcess

public JoinSeedNodeProcess(scala.collection.immutable.IndexedSeq<Address> seedNodes)

Method Detail

context

public ActorContext context()

Description copied from interface: Actor

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!

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

Specified by:

context in interface Actor

Returns:

(undocumented)

self

public final ActorRef self()

Description copied from interface: Actor

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

Can be used to send messages to itself:

 self ! message
 

Specified by:

self in interface Actor

Returns:

(undocumented)

selfAddress

public Address selfAddress()

attempt

public int attempt()

preStart

public void preStart()

Description copied from interface: Actor

User overridable callback.

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

Specified by:

preStart in interface Actor

receive

public scala.PartialFunction<java.lang.Object,scala.runtime.BoxedUnit> receive()

Description copied from interface: Actor

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

Specified by:

receive in interface Actor

Returns:

(undocumented)

done

public scala.PartialFunction<java.lang.Object,scala.runtime.BoxedUnit> done()