format source with scalafmt
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Patrik Nordwall
parent
0f40491d42
commit
ce404e4f53
1669 changed files with 43208 additions and 35404 deletions
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@ -44,8 +44,8 @@ object ClusterSingletonManagerSettings {
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*/
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def apply(system: ActorSystem): ClusterSingletonManagerSettings =
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apply(system.settings.config.getConfig("akka.cluster.singleton"))
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// note that this setting has some additional logic inside the ClusterSingletonManager
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// falling back to DowningProvider.downRemovalMargin if it is off/Zero
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// note that this setting has some additional logic inside the ClusterSingletonManager
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// falling back to DowningProvider.downRemovalMargin if it is off/Zero
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.withRemovalMargin(Cluster(system).settings.DownRemovalMargin)
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/**
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@ -53,11 +53,11 @@ object ClusterSingletonManagerSettings {
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* the default configuration `akka.cluster.singleton`.
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*/
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def apply(config: Config): ClusterSingletonManagerSettings =
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new ClusterSingletonManagerSettings(
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singletonName = config.getString("singleton-name"),
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role = roleOption(config.getString("role")),
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removalMargin = Duration.Zero, // defaults to ClusterSettins.DownRemovalMargin
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handOverRetryInterval = config.getDuration("hand-over-retry-interval", MILLISECONDS).millis)
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new ClusterSingletonManagerSettings(singletonName = config.getString("singleton-name"),
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role = roleOption(config.getString("role")),
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removalMargin = Duration.Zero, // defaults to ClusterSettins.DownRemovalMargin
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handOverRetryInterval =
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config.getDuration("hand-over-retry-interval", MILLISECONDS).millis)
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/**
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* Java API: Create settings from the default configuration
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@ -99,15 +99,16 @@ object ClusterSingletonManagerSettings {
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* over has started or the previous oldest member is removed from the cluster
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* (+ `removalMargin`).
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*/
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final class ClusterSingletonManagerSettings(
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val singletonName: String,
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val role: Option[String],
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val removalMargin: FiniteDuration,
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val handOverRetryInterval: FiniteDuration) extends NoSerializationVerificationNeeded {
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final class ClusterSingletonManagerSettings(val singletonName: String,
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val role: Option[String],
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val removalMargin: FiniteDuration,
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val handOverRetryInterval: FiniteDuration)
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extends NoSerializationVerificationNeeded {
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def withSingletonName(name: String): ClusterSingletonManagerSettings = copy(singletonName = name)
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def withRole(role: String): ClusterSingletonManagerSettings = copy(role = ClusterSingletonManagerSettings.roleOption(role))
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def withRole(role: String): ClusterSingletonManagerSettings =
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copy(role = ClusterSingletonManagerSettings.roleOption(role))
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def withRole(role: Option[String]) = copy(role = role)
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@ -117,11 +118,10 @@ final class ClusterSingletonManagerSettings(
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def withHandOverRetryInterval(retryInterval: FiniteDuration): ClusterSingletonManagerSettings =
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copy(handOverRetryInterval = retryInterval)
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private def copy(
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singletonName: String = singletonName,
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role: Option[String] = role,
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removalMargin: FiniteDuration = removalMargin,
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handOverRetryInterval: FiniteDuration = handOverRetryInterval): ClusterSingletonManagerSettings =
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private def copy(singletonName: String = singletonName,
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role: Option[String] = role,
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removalMargin: FiniteDuration = removalMargin,
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handOverRetryInterval: FiniteDuration = handOverRetryInterval): ClusterSingletonManagerSettings =
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new ClusterSingletonManagerSettings(singletonName, role, removalMargin, handOverRetryInterval)
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}
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@ -135,10 +135,7 @@ object ClusterSingletonManager {
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/**
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* Scala API: Factory method for `ClusterSingletonManager` [[akka.actor.Props]].
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*/
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def props(
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singletonProps: Props,
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terminationMessage: Any,
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settings: ClusterSingletonManagerSettings): Props =
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def props(singletonProps: Props, terminationMessage: Any, settings: ClusterSingletonManagerSettings): Props =
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Props(new ClusterSingletonManager(singletonProps, terminationMessage, settings)).withDeploy(Deploy.local)
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/**
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@ -146,6 +143,7 @@ object ClusterSingletonManager {
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* public due to the `with FSM` type parameters
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*/
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sealed trait State
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/**
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* INTERNAL API
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* public due to the `with FSM` type parameters
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@ -156,24 +154,28 @@ object ClusterSingletonManager {
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* INTERNAL API
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*/
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private[akka] object Internal {
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/**
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* Sent from new oldest to previous oldest to initiate the
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* hand-over process. `HandOverInProgress` and `HandOverDone`
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* are expected replies.
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*/
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case object HandOverToMe extends ClusterSingletonMessage with DeadLetterSuppression
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/**
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* Confirmation by the previous oldest that the hand
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* over process, shut down of the singleton actor, has
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* started.
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*/
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case object HandOverInProgress extends ClusterSingletonMessage
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/**
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* Confirmation by the previous oldest that the singleton
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* actor has been terminated and the hand-over process is
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* completed.
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*/
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case object HandOverDone extends ClusterSingletonMessage
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/**
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* Sent from from previous oldest to new oldest to
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* initiate the normal hand-over process.
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@ -202,8 +204,10 @@ object ClusterSingletonManager {
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final case class YoungerData(oldestOption: Option[UniqueAddress]) extends Data
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final case class BecomingOldestData(previousOldestOption: Option[UniqueAddress]) extends Data
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final case class OldestData(singleton: ActorRef, singletonTerminated: Boolean = false) extends Data
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final case class WasOldestData(singleton: ActorRef, singletonTerminated: Boolean,
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newOldestOption: Option[UniqueAddress]) extends Data
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final case class WasOldestData(singleton: ActorRef,
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singletonTerminated: Boolean,
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newOldestOption: Option[UniqueAddress])
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extends Data
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final case class HandingOverData(singleton: ActorRef, handOverTo: Option[ActorRef]) extends Data
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final case class StoppingData(singleton: ActorRef) extends Data
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case object EndData extends Data
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@ -215,10 +219,12 @@ object ClusterSingletonManager {
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val CleanupTimer = "cleanup"
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object OldestChangedBuffer {
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/**
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* Request to deliver one more event.
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*/
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case object GetNext
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/**
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* The first event, corresponding to CurrentClusterState.
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*/
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@ -281,12 +287,15 @@ object ClusterSingletonManager {
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}
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def handleInitial(state: CurrentClusterState): Unit = {
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membersByAge = immutable.SortedSet.empty(ageOrdering) union state.members.filter(m =>
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m.status == MemberStatus.Up && matchingRole(m))
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membersByAge = immutable.SortedSet
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.empty(ageOrdering)
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.union(state.members.filter(m => m.status == MemberStatus.Up && matchingRole(m)))
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// If there is some removal in progress of an older node it's not safe to immediately become oldest,
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// removal of younger nodes doesn't matter. Note that it can also be started via restart after
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// ClusterSingletonManagerIsStuck.
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val selfUpNumber = state.members.collectFirst { case m if m.uniqueAddress == cluster.selfUniqueAddress => m.upNumber }.getOrElse(Int.MaxValue)
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val selfUpNumber = state.members
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.collectFirst { case m if m.uniqueAddress == cluster.selfUniqueAddress => m.upNumber }
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.getOrElse(Int.MaxValue)
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val safeToBeOldest = !state.members.exists { m =>
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m.upNumber <= selfUpNumber && matchingRole(m) && (m.status == MemberStatus.Down || m.status == MemberStatus.Exiting || m.status == MemberStatus.Leaving)
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}
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@ -428,11 +437,9 @@ class ClusterSingletonManagerIsStuck(message: String) extends AkkaException(mess
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* @param settings see [[ClusterSingletonManagerSettings]]
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*/
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@DoNotInherit
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class ClusterSingletonManager(
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singletonProps: Props,
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terminationMessage: Any,
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settings: ClusterSingletonManagerSettings)
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extends Actor with FSM[ClusterSingletonManager.State, ClusterSingletonManager.Data] {
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class ClusterSingletonManager(singletonProps: Props, terminationMessage: Any, settings: ClusterSingletonManagerSettings)
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extends Actor
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with FSM[ClusterSingletonManager.State, ClusterSingletonManager.Data] {
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import ClusterSingletonManager.Internal._
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import ClusterSingletonManager.Internal.OldestChangedBuffer._
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@ -443,9 +450,8 @@ class ClusterSingletonManager(
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val selfUniqueAddressOption = Some(cluster.selfUniqueAddress)
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import cluster.settings.LogInfo
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require(
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role.forall(cluster.selfRoles.contains),
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s"This cluster member [${cluster.selfAddress}] doesn't have the role [$role]")
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require(role.forall(cluster.selfRoles.contains),
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s"This cluster member [${cluster.selfAddress}] doesn't have the role [$role]")
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val removalMargin =
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if (settings.removalMargin <= Duration.Zero) cluster.downingProvider.downRemovalMargin
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@ -453,8 +459,7 @@ class ClusterSingletonManager(
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val (maxHandOverRetries, maxTakeOverRetries) = {
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val n = (removalMargin.toMillis / handOverRetryInterval.toMillis).toInt
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val minRetries = context.system.settings.config.getInt(
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"akka.cluster.singleton.min-number-of-hand-over-retries")
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val minRetries = context.system.settings.config.getInt("akka.cluster.singleton.min-number-of-hand-over-retries")
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require(minRetries >= 1, "min-number-of-hand-over-retries must be >= 1")
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val handOverRetries = math.max(minRetries, n + 3)
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val takeOverRetries = math.max(1, handOverRetries - 3)
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@ -476,7 +481,7 @@ class ClusterSingletonManager(
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removed += node -> (Deadline.now + 15.minutes)
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def cleanupOverdueNotMemberAnyMore(): Unit = {
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removed = removed filter { case (_, deadline) => deadline.hasTimeLeft }
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removed = removed.filter { case (_, deadline) => deadline.hasTimeLeft }
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}
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// for CoordinatedShutdown
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@ -539,8 +544,8 @@ class ClusterSingletonManager(
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when(Start) {
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case Event(StartOldestChangedBuffer, _) =>
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oldestChangedBuffer = context.actorOf(Props(classOf[OldestChangedBuffer], role).
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withDispatcher(context.props.dispatcher))
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oldestChangedBuffer =
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context.actorOf(Props(classOf[OldestChangedBuffer], role).withDispatcher(context.props.dispatcher))
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getNextOldestChanged()
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stay
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@ -550,9 +555,9 @@ class ClusterSingletonManager(
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// oldest immediately
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gotoOldest()
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else if (oldestOption == selfUniqueAddressOption)
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goto(BecomingOldest) using BecomingOldestData(None)
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goto(BecomingOldest).using(BecomingOldestData(None))
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else
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goto(Younger) using YoungerData(oldestOption)
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goto(Younger).using(YoungerData(oldestOption))
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}
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when(Younger) {
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@ -565,12 +570,14 @@ class ClusterSingletonManager(
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case Some(prev) if removed.contains(prev) => gotoOldest()
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case Some(prev) =>
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peer(prev.address) ! HandOverToMe
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goto(BecomingOldest) using BecomingOldestData(previousOldestOption)
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goto(BecomingOldest).using(BecomingOldestData(previousOldestOption))
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}
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} else {
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logInfo("Younger observed OldestChanged: [{} -> {}]", previousOldestOption.map(_.address), oldestOption.map(_.address))
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logInfo("Younger observed OldestChanged: [{} -> {}]",
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previousOldestOption.map(_.address),
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oldestOption.map(_.address))
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getNextOldestChanged()
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stay using YoungerData(oldestOption)
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stay.using(YoungerData(oldestOption))
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}
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case Event(MemberDowned(m), _) if m.uniqueAddress == cluster.selfUniqueAddress =>
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@ -589,7 +596,7 @@ class ClusterSingletonManager(
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logInfo("Previous oldest removed [{}]", m.address)
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addRemoved(m.uniqueAddress)
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// transition when OldestChanged
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stay using YoungerData(None)
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stay.using(YoungerData(None))
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case Event(HandOverToMe, _) =>
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// this node was probably quickly restarted with same hostname:port,
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@ -610,9 +617,9 @@ class ClusterSingletonManager(
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if (sender().path.address == previousOldest.address)
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gotoOldest()
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else {
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logInfo(
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"Ignoring HandOverDone in BecomingOldest from [{}]. Expected previous oldest [{}]",
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sender().path.address, previousOldest.address)
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logInfo("Ignoring HandOverDone in BecomingOldest from [{}]. Expected previous oldest [{}]",
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sender().path.address,
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previousOldest.address)
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stay
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}
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@ -628,7 +635,8 @@ class ClusterSingletonManager(
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scheduleDelayedMemberRemoved(m)
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stay
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case Event(DelayedMemberRemoved(m), BecomingOldestData(Some(previousOldest))) if m.uniqueAddress == previousOldest =>
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case Event(DelayedMemberRemoved(m), BecomingOldestData(Some(previousOldest)))
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if m.uniqueAddress == previousOldest =>
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logInfo("Previous oldest [{}] removed", previousOldest.address)
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addRemoved(m.uniqueAddress)
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gotoOldest()
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@ -640,20 +648,20 @@ class ClusterSingletonManager(
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cluster.state.members.collectFirst { case m if m.address == senderAddress => m.uniqueAddress } match {
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case None =>
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// from unknown node, ignore
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logInfo(
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"Ignoring TakeOver request from unknown node in BecomingOldest from [{}].", senderAddress)
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logInfo("Ignoring TakeOver request from unknown node in BecomingOldest from [{}].", senderAddress)
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stay
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case Some(senderUniqueAddress) =>
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previousOldestOption match {
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case Some(previousOldest) =>
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if (previousOldest == senderUniqueAddress) sender() ! HandOverToMe
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else logInfo(
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"Ignoring TakeOver request in BecomingOldest from [{}]. Expected previous oldest [{}]",
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sender().path.address, previousOldest.address)
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else
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logInfo("Ignoring TakeOver request in BecomingOldest from [{}]. Expected previous oldest [{}]",
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sender().path.address,
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previousOldest.address)
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stay
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case None =>
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sender() ! HandOverToMe
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stay using BecomingOldestData(Some(senderUniqueAddress))
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stay.using(BecomingOldestData(Some(senderUniqueAddress)))
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}
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}
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@ -663,7 +671,7 @@ class ClusterSingletonManager(
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previousOldestOption.foreach(node => peer(node.address) ! HandOverToMe)
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setTimer(HandOverRetryTimer, HandOverRetry(count + 1), handOverRetryInterval, repeat = false)
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stay()
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} else if (previousOldestOption forall removed.contains) {
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} else if (previousOldestOption.forall(removed.contains)) {
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// can't send HandOverToMe, previousOldest unknown for new node (or restart)
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// previous oldest might be down or removed, so no TakeOverFromMe message is received
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logInfo("Timeout in BecomingOldest. Previous oldest unknown, removed and no TakeOver request.")
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@ -684,9 +692,9 @@ class ClusterSingletonManager(
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}
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def gotoOldest(): State = {
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val singleton = context watch context.actorOf(singletonProps, singletonName)
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val singleton = context.watch(context.actorOf(singletonProps, singletonName))
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logInfo("Singleton manager starting singleton actor [{}]", singleton.path)
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goto(Oldest) using OldestData(singleton)
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goto(Oldest).using(OldestData(singleton))
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}
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when(Oldest) {
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@ -706,11 +714,11 @@ class ClusterSingletonManager(
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// send TakeOver request in case the new oldest doesn't know previous oldest
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peer(a.address) ! TakeOverFromMe
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setTimer(TakeOverRetryTimer, TakeOverRetry(1), handOverRetryInterval, repeat = false)
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goto(WasOldest) using WasOldestData(singleton, singletonTerminated, newOldestOption = Some(a))
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goto(WasOldest).using(WasOldestData(singleton, singletonTerminated, newOldestOption = Some(a)))
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case None =>
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// new oldest will initiate the hand-over
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setTimer(TakeOverRetryTimer, TakeOverRetry(1), handOverRetryInterval, repeat = false)
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goto(WasOldest) using WasOldestData(singleton, singletonTerminated, newOldestOption = None)
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goto(WasOldest).using(WasOldestData(singleton, singletonTerminated, newOldestOption = None))
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}
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case Event(HandOverToMe, OldestData(singleton, singletonTerminated)) =>
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@ -723,7 +731,7 @@ class ClusterSingletonManager(
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case Event(Terminated(ref), d @ OldestData(singleton, _)) if ref == singleton =>
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logInfo("Singleton actor [{}] was terminated", singleton.path)
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stay using d.copy(singletonTerminated = true)
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stay.using(d.copy(singletonTerminated = true))
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case Event(SelfExiting, _) =>
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selfMemberExited()
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@ -731,7 +739,8 @@ class ClusterSingletonManager(
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sender() ! Done // reply to ask
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stay
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case Event(MemberDowned(m), OldestData(singleton, singletonTerminated)) if m.uniqueAddress == cluster.selfUniqueAddress =>
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case Event(MemberDowned(m), OldestData(singleton, singletonTerminated))
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if m.uniqueAddress == cluster.selfUniqueAddress =>
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if (singletonTerminated) {
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logInfo("Self downed, stopping ClusterSingletonManager")
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stop()
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@ -764,13 +773,14 @@ class ClusterSingletonManager(
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logInfo("Self removed, stopping ClusterSingletonManager")
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stop()
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case Event(MemberRemoved(m, _), WasOldestData(singleton, singletonTerminated, Some(newOldest))) if !selfExited && m.uniqueAddress == newOldest =>
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case Event(MemberRemoved(m, _), WasOldestData(singleton, singletonTerminated, Some(newOldest)))
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if !selfExited && m.uniqueAddress == newOldest =>
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addRemoved(m.uniqueAddress)
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gotoHandingOver(singleton, singletonTerminated, None)
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case Event(Terminated(ref), d @ WasOldestData(singleton, _, _)) if ref == singleton =>
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logInfo("Singleton actor [{}] was terminated", singleton.path)
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stay using d.copy(singletonTerminated = true)
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stay.using(d.copy(singletonTerminated = true))
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case Event(SelfExiting, _) =>
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selfMemberExited()
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@ -778,7 +788,8 @@ class ClusterSingletonManager(
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sender() ! Done // reply to ask
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stay
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case Event(MemberDowned(m), OldestData(singleton, singletonTerminated)) if m.uniqueAddress == cluster.selfUniqueAddress =>
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case Event(MemberDowned(m), OldestData(singleton, singletonTerminated))
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if m.uniqueAddress == cluster.selfUniqueAddress =>
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if (singletonTerminated) {
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logInfo("Self downed, stopping ClusterSingletonManager")
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stop()
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@ -793,10 +804,10 @@ class ClusterSingletonManager(
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if (singletonTerminated) {
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handOverDone(handOverTo)
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} else {
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handOverTo foreach { _ ! HandOverInProgress }
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handOverTo.foreach { _ ! HandOverInProgress }
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logInfo("Singleton manager stopping singleton actor [{}]", singleton.path)
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singleton ! terminationMessage
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goto(HandingOver) using HandingOverData(singleton, handOverTo)
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goto(HandingOver).using(HandingOverData(singleton, handOverTo))
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||||
}
|
||||
}
|
||||
|
||||
|
|
@ -819,21 +830,21 @@ class ClusterSingletonManager(
|
|||
def handOverDone(handOverTo: Option[ActorRef]): State = {
|
||||
val newOldest = handOverTo.map(_.path.address)
|
||||
logInfo("Singleton terminated, hand-over done [{} -> {}]", cluster.selfAddress, newOldest)
|
||||
handOverTo foreach { _ ! HandOverDone }
|
||||
handOverTo.foreach { _ ! HandOverDone }
|
||||
memberExitingProgress.trySuccess(Done)
|
||||
if (removed.contains(cluster.selfUniqueAddress)) {
|
||||
logInfo("Self removed, stopping ClusterSingletonManager")
|
||||
stop()
|
||||
} else if (handOverTo.isEmpty)
|
||||
goto(Younger) using YoungerData(None)
|
||||
goto(Younger).using(YoungerData(None))
|
||||
else
|
||||
goto(End) using EndData
|
||||
goto(End).using(EndData)
|
||||
}
|
||||
|
||||
def gotoStopping(singleton: ActorRef): State = {
|
||||
logInfo("Singleton manager stopping singleton actor [{}]", singleton.path)
|
||||
singleton ! terminationMessage
|
||||
goto(Stopping) using StoppingData(singleton)
|
||||
goto(Stopping).using(StoppingData(singleton))
|
||||
}
|
||||
|
||||
when(Stopping) {
|
||||
|
|
|
|||
Loading…
Add table
Add a link
Reference in a new issue