我有ParentActor和2个ChildActor,这是我的代码
Class ParentActor extends Actor {
val mongoActor = context.of.....
val esActor = context.of ............
def receive {
case InserInMongo(obj) =>
val mFuture = ask(mongoActor, InsertDataInMongo(object)).mapTo[Boolean]
mFuture.onComplete {
case Success(resultMongo) =>
sender ! resultMongo
case Failure(e) =>
sender ! akka.actor.Status.Failure(e)
throw e
}
case InserInES(obj) =>
val eFuture = ask(esActor, InsertDataInES(object)).mapTo[Boolean]
eFuture.onComplete {
case Success(resultES) =>
sender ! resultES
case Failure(e) =>
sender ! akka.actor.Status.Failure(e)
throw e
}
}
}
这是呼叫代码
class Demo {
val mongoFuture = ask(parentActor, InsertInMongo(obj))
.mapTo[Boolean]
.recover {
case e =>
println("error in mongo: " + e)
false
}
val esFuture = ask(parentActor, InsertInES(obj))
.mapTo[Boolean]
.recover {
case e =>
println("error in ES: " + e)
false
}
val f = Future.sequence(List(mongoFuture, esFuture))
val result: Seq[Boolean] = Await.result(f, Duration.Inf)
log.info ("result {}",result)
}
一切正常,但是如果我在mongoChildActor中遇到了MongoException,我将无法获得ES的父演员结果
这就是我要得到的
17:19:45.782 [MyActorSystem-akka.actor.default-dispatcher-4] INFO akka.actor.DeadLetterActorRef - Message [java.lang.Boolean] from Actor[akka://MyActorSystem/user/ParentActor#1383701267] to Actor[akka://MyActorSystem/deadLetters] was not delivered. [2] dead letters encountered. This logging can be turned off or adjusted with configuration settings 'akka.log-dead-letters' and 'akka.log-dead-letters-during-shutdown'.
我想要的是,如果我在mongo中遇到异常,则得到异常,然后应继续执行ES并返回其结果(成功值或异常)
答案 0 :(得分:3)
请勿在{{1}}中引发异常,也不要关闭receive
(sender
是一个函数,仅在sender
的上下文中有效,您正在receive
内的另一个线程上使用它)。
这样的事情应该做你想要的:
.onComplete
或者,甚至更容易:
import akka.pattern.pipe
def receive: Receive = {
case InserInMongo(obj) =>
ask(mongoActor, InsertDataInMongo(object)).pipeTo(sender)
case InserInES(obj) =>
ask(esActor, InsertDataInES(object)).pipeTo(sender)
}