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

This example Akka source code file (NodeMetricsSpec.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

actor, address, akka, cluster, matchers, nodemetrics, nodemetricsspec, none, wordspec

The NodeMetricsSpec.scala Akka example source code

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

package akka.cluster

import org.scalatest.WordSpec
import org.scalatest.Matchers
import akka.actor.Address

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

  val node1 = Address("akka.tcp", "sys", "a", 2554)
  val node2 = Address("akka.tcp", "sys", "a", 2555)

  "NodeMetrics must" must {

    "return correct result for 2 'same' nodes" in {
      (NodeMetrics(node1, 0) sameAs NodeMetrics(node1, 0)) should be(true)
    }

    "return correct result for 2 not 'same' nodes" in {
      (NodeMetrics(node1, 0) sameAs NodeMetrics(node2, 0)) should be(false)
    }

    "merge 2 NodeMetrics by most recent" in {
      val sample1 = NodeMetrics(node1, 1, Set(Metric.create("a", 10, None), Metric.create("b", 20, None)).flatten)
      val sample2 = NodeMetrics(node1, 2, Set(Metric.create("a", 11, None), Metric.create("c", 30, None)).flatten)

      val merged = sample1 merge sample2
      merged.timestamp should be(sample2.timestamp)
      merged.metric("a").map(_.value) should be(Some(11))
      merged.metric("b").map(_.value) should be(Some(20))
      merged.metric("c").map(_.value) should be(Some(30))
    }

    "not merge 2 NodeMetrics if master is more recent" in {
      val sample1 = NodeMetrics(node1, 1, Set(Metric.create("a", 10, None), Metric.create("b", 20, None)).flatten)
      val sample2 = NodeMetrics(node1, 0, Set(Metric.create("a", 11, None), Metric.create("c", 30, None)).flatten)

      val merged = sample1 merge sample2 // older and not same
      merged.timestamp should be(sample1.timestamp)
      merged.metrics should be(sample1.metrics)
    }
  }
}