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!clu #3617 API improvements related to CurrentClusterState

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* Getter for CurrentClusterState in Cluster extension, updated via
  ClusterReadView
* Remove lazy init of readView. Otherwise the cluster.state will be
  empty on first access, wich is probably surprising
* Subscribe to several cluster event types at once, to ensure *one*
  CurrentClusterEvent followed by change events
* Deprecate publishCurrentClusterState, was a bad idea, use sendCurrentClusterState
  instead
* Possibility to subscribe with InitialStateAsEvents to receive events corresponding
  to CurrentClusterState
* CurrentClusterState not a ClusterDomainEvent, ticket #3614
This commit is contained in:
Patrik Nordwall 2014-01-08 14:14:48 +01:00
parent bfbee94fec
commit 2e5193347e
19 changed files with 342 additions and 99 deletions
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2
akka-cluster/src/main/scala/akka/cluster/ClusterDaemon.scala
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@ -134,7 +134,7 @@ private[cluster] object InternalClusterAction {
case class AddOnMemberUpListener(callback: Runnable) extends NoSerializationVerificationNeeded
sealed trait SubscriptionMessage
case class Subscribe(subscriber: ActorRef, to: Class[_]) extends SubscriptionMessage
case class Subscribe(subscriber: ActorRef, initialStateMode: SubscriptionInitialStateMode, to: Set[Class[_]]) extends SubscriptionMessage
case class Unsubscribe(subscriber: ActorRef, to: Option[Class[_]]) extends SubscriptionMessage
/**
* @param receiver if `receiver` is defined the event will only be sent to that