为什么我无法使用scaldi绑定到单个actor实例（akka路由器）？ [英] why cant I bind to single actor instance (akka router) with scaldi?

问题描述

我目前正在努力使用scaldi进行依赖项注入来实现我的Akka路由器逻辑。为什么我不能使用scaldi绑定到单个actor实例，因为我的actor是路由器，而我只想拥有一个实例？
我问这个问题的方式是另一个stackoverflow条目。

I´m currently struggeling with implementing my Akka router logic using scaldi for dependency injection. Why cant I bind to a single actor instance with scaldi, since my actor is a router and I only want to have one single instance of it? The way I came to ask this question was another stackoverflow entry.

我的scaldi模块：

My scaldi Module:

class DAOModule extends Module {
  bind toProvider new UserDaoWorker
  binding to new UserDaoRouter
}

这样，仅创建一个实例，并且一旦我多次注入路由器，它就会从sender（）方法中获得作为发送者的死信演员。

This way only one instance is created and as soon as I inject my router multiple times it gets a dead letter actor as sender from the sender() method.

当我将绑定更改为...

When I change the binding to...

binding toProvider new UserDaoRouter

...它工作得很好，但是每次注入都意味着我路由器的新实例。我对吗？

... it works perfectly fine, but every injection means a new instance of my router. Am I right?

那么我怎么能只拥有一个可注射的路由器实例呢？

So how can I achieve having only a single instance of my router which is injectable?

预先感谢

推荐答案

这对我有用：

class DAOModule extends Module {
  binding toProvider new UserDaoWorker
  binding toProvider new UserDaoRouter
  binding identifiedBy 'singletonUserRouter to {
    implicit val system = inject[ActorSystem]
    AkkaInjectable.injectActorRef[UserDaoRouter]
  }
}

然后在我的控制器中：

val userDaoRouter = inject[ActorRef] ('singletonUserRouter)

我希望这会帮助其他人;）

I hope this will help someone else ;)

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