pekko/akka-docs/common/code/docs/circuitbreaker/CircuitBreakerDocSpec.scala

/**
 * Copyright (C) 2009-2012 Typesafe Inc. <http://www.typesafe.com>
 */

package docs.circuitbreaker

//#imports1
import scala.concurrent.util.duration._ // small d is important here
import akka.pattern.CircuitBreaker
import akka.actor.Actor
import akka.dispatch.Future
import akka.event.Logging

//#imports1

class CircuitBreakerDocSpec {}

//#circuit-breaker-initialization
class DangerousActor extends Actor {

  val log = Logging(context.system, this)
  implicit val executionContext = context.dispatcher
  val breaker =
    new CircuitBreaker(context.system.scheduler, 5, 10.seconds, 1.minute)
      .onOpen(notifyMeOnOpen)

  def notifyMeOnOpen =
    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" ⇒
      sender ! breaker.withCircuitBreaker(Future(dangerousCall))
    case "block for me" ⇒
      sender ! breaker.withSyncCircuitBreaker(dangerousCall)
  }
  //#circuit-breaker-usage

}