如何在Akka系统中打印所有演员？ [英] How print all actors in akka system?

问题描述

我创建了akka系统。假设其中有一些参与者。如何从Akka系统中使用其路径打印所有演员？ （出于调试目的）

I have created akka system. Suppose there are some actors in it. How I can print all actors from akka system with their path? (for debug purposes)

推荐答案

罗兰·库恩（Roland Kuhn）的回复表明，这并不是一个完全无关紧要的问题，但是您可以很接近（对于将回复消息的演员在合理的时间内）使用 标识所有参与者都遵循的- ActorIdentity 请求-响应协议。

This reply by Roland Kuhn suggests that this isn't a completely trivial problem, but you can get pretty close (for actors that will reply to messages in a reasonable time) using the Identify-ActorIdentity request-response protocol that all actors obey.

一些未经测试的代码组合在一起来说明这个想法：

Some untested code thrown together to illustrate the idea:

import akka.actor._

def receive = {
    case 'listActors =>
      context.actorSelection("/user/*") ! Identify()

    case path: ActorPath =>
      context.actorSelection(path / "*") ! Identify()

    case ActorIdentity(_, Some(ref)) =>
      log.info("Got actor " + ref.path.toString)
      self ! ref.path
}

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