0e4d41ad33
* Add scalafix plugin for jdk 9. * Add command alias sortImports. * Excludes some sources from SortImports. * Update SortImports to 0.4.0 * Sort imports with `sortImports` command.
50 lines
1.6 KiB
Scala
50 lines
1.6 KiB
Scala
/*
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* Copyright (C) 2009-2020 Lightbend Inc. <https://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.annotation.InternalApi
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import akka.cluster.Member
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import akka.cluster.UniqueAddress
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import akka.util.unused
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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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def addSeen(@unused node: Address): PruningState = this
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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
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}
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