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

This example Akka source code file (CircuitBreakerDocSpec.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, actorlogging, akka, circuitbreaker, circuitbreakerdocspec, concurrent, dangerousactor, duration, event, my, pattern, string, this, time, unit

The CircuitBreakerDocSpec.scala Akka example source code

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

package docs.circuitbreaker

//#imports1
import scala.concurrent.duration._
import akka.pattern.CircuitBreaker
import akka.pattern.pipe
import akka.actor.Actor
import akka.actor.ActorLogging
import scala.concurrent.Future
import akka.event.Logging

//#imports1

class CircuitBreakerDocSpec {}

//#circuit-breaker-initialization
class DangerousActor extends Actor with ActorLogging {
  import context.dispatcher

  val breaker =
    new CircuitBreaker(context.system.scheduler,
      maxFailures = 5,
      callTimeout = 10.seconds,
      resetTimeout = 1.minute).onOpen(notifyMeOnOpen())

  def notifyMeOnOpen(): Unit =
    log.warning("My CircuitBreaker is now open, and will not close for one minute")
  //#circuit-breaker-initialization

  //#circuit-breaker-usage
  def dangerousCall: String = "This really isn't that dangerous of a call after all"

  def receive = {
    case "is my middle name" =>
      breaker.withCircuitBreaker(Future(dangerousCall)) pipeTo sender()
    case "block for me" =>
      sender() ! breaker.withSyncCircuitBreaker(dangerousCall)
  }
  //#circuit-breaker-usage

}