62 lines
1.8 KiB
Scala
62 lines
1.8 KiB
Scala
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/**
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* Copyright (C) 2009-2012 Typesafe Inc. <http://www.typesafe.com>
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*/
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package akka.cluster
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import akka.actor.Address
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import akka.remote.testkit.MultiNodeSpec
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import akka.testkit._
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/**
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* Base trait for all failure detector strategies.
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*/
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trait FailureDetectorStrategy {
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/**
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* Get or create the FailureDetector to be used in the cluster node.
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* To be defined by subclass.
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*/
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def failureDetector: FailureDetector
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/**
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* Marks a node as available in the failure detector.
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* To be defined by subclass.
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*/
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def markNodeAsAvailable(address: Address): Unit
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/**
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* Marks a node as unavailable in the failure detector.
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* To be defined by subclass.
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*/
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def markNodeAsUnavailable(address: Address): Unit
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}
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/**
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* Defines a FailureDetectorPuppet-based FailureDetectorStrategy.
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*/
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trait FailureDetectorPuppetStrategy extends FailureDetectorStrategy { self: MultiNodeSpec ⇒
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/**
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* The puppet instance. Separated from 'failureDetector' field so we don't have to cast when using the puppet specific methods.
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*/
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private val puppet = new FailureDetectorPuppet(system)
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override def failureDetector: FailureDetector = puppet
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override def markNodeAsAvailable(address: Address): Unit = puppet markNodeAsAvailable address
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override def markNodeAsUnavailable(address: Address): Unit = puppet markNodeAsUnavailable address
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}
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/**
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* Defines a AccrualFailureDetector-based FailureDetectorStrategy.
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*/
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trait AccrualFailureDetectorStrategy extends FailureDetectorStrategy { self: MultiNodeSpec ⇒
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override val failureDetector: FailureDetector = new AccrualFailureDetector(system, new ClusterSettings(system.settings.config, system.name))
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override def markNodeAsAvailable(address: Address): Unit = { /* no-op */ }
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override def markNodeAsUnavailable(address: Address): Unit = { /* no-op */ }
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}
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