b700b840d1
* keep track of delta interval versions and skip deltas that are not consequtive, i.e. when some delta message was lost * send the delta versions in the full state gossip to sync up the expected versions after dropped deltas * implementation of deltas for ORSet * refactoring of the delta types to allow for different type for the delta and the full state * extensive tests * mima filter * performance optimizations * simple pruning of deltas * Java API * update documentation * KeyId type alias * Use InternalApi annotation
48 lines
1.5 KiB
Scala
48 lines
1.5 KiB
Scala
/**
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* Copyright (C) 2009-2017 Lightbend Inc. <http://www.lightbend.com>
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*/
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package akka.cluster.ddata
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import akka.actor.Address
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import akka.cluster.Member
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import akka.cluster.UniqueAddress
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import akka.annotation.InternalApi
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/**
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* INTERNAL API
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*/
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@InternalApi private[akka] object PruningState {
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final case class PruningInitialized(owner: UniqueAddress, seen: Set[Address]) extends PruningState {
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override def addSeen(node: Address): PruningState = {
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if (seen(node) || owner.address == node) this
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else copy(seen = seen + node)
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}
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}
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final case class PruningPerformed(obsoleteTime: Long) extends PruningState {
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def isObsolete(currentTime: Long): Boolean = obsoleteTime <= currentTime
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}
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}
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/**
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* INTERNAL API
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*/
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@InternalApi private[akka] sealed trait PruningState {
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import PruningState._
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def merge(that: PruningState): PruningState =
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(this, that) match {
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case (p1: PruningPerformed, p2: PruningPerformed) ⇒ if (p1.obsoleteTime >= p2.obsoleteTime) this else that
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case (_: PruningPerformed, _) ⇒ this
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case (_, _: PruningPerformed) ⇒ that
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case (PruningInitialized(thisOwner, thisSeen), PruningInitialized(thatOwner, thatSeen)) ⇒
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if (thisOwner == thatOwner)
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PruningInitialized(thisOwner, thisSeen union thatSeen)
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else if (Member.addressOrdering.compare(thisOwner.address, thatOwner.address) > 0)
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that
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else
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this
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}
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def addSeen(node: Address): PruningState = this
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}
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