Working test

UnreachableNodeJoinsAgainSecondMultiNodeConfig #1

/**
 * Copyright (C) 2009-2016 Typesafe Inc. <http://www.typesafe.com>
 */
package akka.cluster

import language.postfixOps
import scala.collection.immutable
import scala.concurrent.Await
import scala.concurrent.duration._
import com.typesafe.config.ConfigFactory
import akka.actor.ActorSystem
import akka.actor.ExtendedActorSystem
import akka.remote.testconductor.RoleName
import akka.remote.testkit.MultiNodeConfig
import akka.remote.testkit.MultiNodeSpec
import akka.remote.transport.ThrottlerTransportAdapter.Direction
import akka.testkit._
import akka.actor.Actor
import akka.actor.ActorRef
import akka.actor.Props
import akka.actor.RootActorPath
import akka.cluster.MultiNodeClusterSpec.EndActor

object UnreachableNodeJoinsAgainSecondMultiNodeConfig extends MultiNodeConfig {
  val first = role("first")
  val second = role("second")
  val third = role("third")
  val fourth = role("fourth")

  commonConfig(ConfigFactory.parseString(
    """
      akka.remote.log-remote-lifecycle-events = off
    """).withFallback(debugConfig(on = false).withFallback(MultiNodeClusterSpec.clusterConfig)))

  testTransport(on = true)

}

class UnreachableNodeJoinsAgainSecondMultiJvmNode1 extends UnreachableNodeJoinsAgainSecondSpec
class UnreachableNodeJoinsAgainSecondMultiJvmNode2 extends UnreachableNodeJoinsAgainSecondSpec
class UnreachableNodeJoinsAgainSecondMultiJvmNode3 extends UnreachableNodeJoinsAgainSecondSpec
class UnreachableNodeJoinsAgainSecondMultiJvmNode4 extends UnreachableNodeJoinsAgainSecondSpec

abstract class UnreachableNodeJoinsAgainSecondSpec
  extends MultiNodeSpec(UnreachableNodeJoinsAgainSecondMultiNodeConfig)
  with MultiNodeClusterSpec {

  import UnreachableNodeJoinsAgainMultiNodeConfig._

  muteMarkingAsUnreachable()

  def allBut(role: RoleName, roles: immutable.Seq[RoleName] = roles): immutable.Seq[RoleName] = {
    roles.filterNot(_ == role)
  }

  lazy val master = second
  lazy val victim = fourth

  var endBarrierNumber = 0
  def endBarrier(): Unit = {
    endBarrierNumber += 1
    enterBarrier("after_" + endBarrierNumber)
  }

  "A cluster of " + roles.size + " members" must {

    "reach initial convergence" taggedAs LongRunningTest in {
      awaitClusterUp(roles: _*)
      endBarrier()
    }

    "mark a node as UNREACHABLE when we pull the network and be REACHABLE after" taggedAs LongRunningTest in {
      // let them send at least one heartbeat to each other after the gossip convergence
      // because for new joining nodes we remove them from the failure detector when
      // receive gossip
      Thread.sleep(2.seconds.dilated.toMillis)

      runOn(first) {
        // pull network for victim node from all nodes
        allBut(victim).foreach { roleName ⇒
          testConductor.blackhole(victim, roleName, Direction.Both).await
        }
      }

      enterBarrier("unplug_victim")

      val allButVictim = allBut(victim, roles)
      runOn(victim) {
        allButVictim.foreach(markNodeAsUnavailable(_))
        within(150 seconds) {
          // victim becomes all alone
          awaitAssert {
            val members = clusterView.members
            clusterView.unreachableMembers.size should ===(roles.size - 1)
          }
          clusterView.unreachableMembers.map(_.address) should ===((allButVictim map address).toSet)
        }
      }

      runOn(allButVictim: _*) {
        markNodeAsUnavailable(victim)
        within(150 seconds) {
          // victim becomes unreachable
          awaitAssert {
            val members = clusterView.members
            clusterView.unreachableMembers.size should ===(1)
          }
          awaitSeenSameState(allButVictim map address: _*)
          // still one unreachable
          clusterView.unreachableMembers.size should ===(1)
          clusterView.unreachableMembers.head.address should ===(node(victim).address)
          clusterView.unreachableMembers.head.status should ===(MemberStatus.Up)
        }
      }

      endBarrier()

      runOn(first) {
        // pull network for victim node from all nodes
        allBut(victim).foreach { roleName ⇒
          testConductor.passThrough(victim, roleName, Direction.Both).await
        }
      }

      enterBarrier("plug_victim")

      runOn(allButVictim: _*) {
        //markNodeAsUnavailable(victim)
        within(150 seconds) {
          // victim becomes unreachable
          awaitAssert {
            val members = clusterView.members
            clusterView.unreachableMembers.size should ===(0)
          }
          awaitSeenSameState(allButVictim map address: _*)
          // no unreachable
          clusterView.unreachableMembers.size should ===(0)
        }
      }

      endBarrier()
    }

  }
}