Akka/Scala example source code file (HeartbeatNodeRingPerfSpec.scala)

This example Akka source code file (HeartbeatNodeRingPerfSpec.scala) is included in my "Source Code Warehouse" project. The intent of this project is to help you more easily find Akka and Scala source code examples by using tags.

All credit for the original source code belongs to akka.io; I'm just trying to make examples easier to find. (For my Scala work, see my Scala examples and tutorials.)

Akka tags/keywords

akka, cluster, collection, concurrent, duration, heartbeatnodering, heartbeatnoderingperfspec, int, matchers, time, uniqueaddress, unit, wordspec

The HeartbeatNodeRingPerfSpec.scala Akka example source code

/**
 * Copyright (C) 2009-2014 Typesafe Inc. <http://www.typesafe.com>
 */
package akka.cluster

import scala.collection.immutable.HashSet
import scala.concurrent.duration.Deadline
import org.scalatest.WordSpec
import org.scalatest.Matchers
import akka.actor.Address

@org.junit.runner.RunWith(classOf[org.scalatest.junit.JUnitRunner])
class HeartbeatNodeRingPerfSpec extends WordSpec with Matchers {

  val nodesSize = sys.props.get("akka.cluster.HeartbeatNodeRingPerfSpec.nodesSize").getOrElse("250").toInt
  val iterations = sys.props.get("akka.cluster.HeartbeatNodeRingPerfSpec.iterations").getOrElse("10000").toInt

  def createHeartbeatNodeRingOfSize(size: Int): HeartbeatNodeRing = {
    val nodes = (1 to size).map(n ⇒ UniqueAddress(Address("akka.tcp", "sys", "node-" + n, 2552), n))
    val selfAddress = nodes(size / 2)
    HeartbeatNodeRing(selfAddress, nodes.toSet, 5)
  }

  val heartbeatNodeRing = createHeartbeatNodeRingOfSize(nodesSize)

  def checkThunkForRing(ring: HeartbeatNodeRing, thunk: HeartbeatNodeRing ⇒ Unit, times: Int): Unit =
    for (i ← 1 to times) thunk(ring)

  def myReceivers(ring: HeartbeatNodeRing): Unit = {
    val r = HeartbeatNodeRing(ring.selfAddress, ring.nodes, ring.monitoredByNrOfMembers)
    r.myReceivers.isEmpty should be(false)
  }

  s"HeartbeatNodeRing of size $nodesSize" must {

    s"do a warm up run, $iterations times" in {
      checkThunkForRing(heartbeatNodeRing, myReceivers, iterations)
    }

    s"produce myReceivers, $iterations times" in {
      checkThunkForRing(heartbeatNodeRing, myReceivers, iterations)
    }

  }

}