消息发送到死信而不是发送方(akka路由器)[scala]
实际上,我在让我的演员(路由器)系统正常工作方面遇到了麻烦。 我的设置: 我想在游戏控制器中使用akka路由器。对于依赖注入,我使用sphorti I模块:消息发送到死信而不是发送方(akka路由器)[scala],akka,router,actor,dead-letter,scaldi,Akka,Router,Actor,Dead Letter,Scaldi,实际上,我在让我的演员(路由器)系统正常工作方面遇到了麻烦。 我的设置: 我想在游戏控制器中使用akka路由器。对于依赖注入,我使用sphorti I模块: class UserDAOModule extends Module { binding to new ExampleRouter binding toProvider new UserDAOWorker } akka路由器: class UserDAORouter(implicit inj:Injector) extends A
class UserDAOModule extends Module {
binding to new ExampleRouter
binding toProvider new UserDAOWorker
}
akka路由器:
class UserDAORouter(implicit inj:Injector) extends Actor with AkkaInjectable {
val userDAOProps = injectActorProps[UserDAOWorker]
var router = {
val routees = Vector.fill(5) {
val r = context.actorOf(userDAOProps)
context watch r
ActorRefRoutee(r)
}
Router(RoundRobinRoutingLogic(), routees)
}
override def receive: Receive = {
case mm: MongoDBMessage =>
router.route(mm, sender)
case Terminated(a) =>
router = router.removeRoutee(a)
val r = context.actorOf(userDAOProps)
context watch r
router = router.addRoutee(r)
}
}
工人:
class UserDAOWorker(implicit inj:Injector) extends Actor with Injectable {
val db = inject[DefaultDB]
val collection:JSONCollection = db("users")
val currentSender = sender
override def receive: Receive = {
case InsertUser(user) => insertUser(user)
}
def insertUser(user:User) = {
collection.save(user).onComplete {
case Failure(e) => currentSender ! new UserDAOReturnMessage(Some(e), None)
case Success(lastError) => currentSender ! new UserDAOReturnMessage(None, lastError)
}
}
}
当我向路由器发送消息(insertUser消息)时,它被正确路由,并且工作人员收到消息,但是当工作人员将消息发送回发送者时,它无法被传递,因此它被发送到死信办公室。我想不出怎么解决这个问题。有人能帮我吗
提前感谢我想问题在于,在创建actor时,构造函数中的currentSender被初始化为null(即ActorRef.noSender)。'发件人“”仅在接收()中接收消息的上下文中有效。向ActorRef.noSender发送消息相当于向死信队列发送消息 像这样的方法应该会奏效:
class UserDAOWorker(implicit inj:Injector) extends Actor with Injectable {
val db = inject[DefaultDB]
val collection:JSONCollection = db("users")
override def receive: Receive = {
case InsertUser(user) => {
insertUser(sender, user)
}
}
def insertUser(currentSender : ActorRef, user:User) = {
collection.save(user).onComplete {
case Failure(e) => currentSender ! new UserDAOReturnMessage(Some(e), None)
case Success(lastError) => currentSender ! new UserDAOReturnMessage(None, lastError)
}
}
}
谢谢你的回复。关于那件事你完全正确。。愚蠢的错误。但是,即使我改变了这一点,路由器在调用sender()方法时,首先已经获得了一个ActorRef到“dead letter”actor。它是否应该将actorRef发送给代表我的控制器(实际上发送实际消息)的临时参与者?还是我错了?也许这和我的滚烫配置有关。。!?我刚发现我的装订不正确。。当我将“binding to new UserDaoRouter”更改为“binding to Provider new UserDaoRouter”时,它可以工作,但每次注入路由器时,Bushuti都会提供一个新实例,这与我想要的不一样。这就引出了另一个问题: