AKKA：无痛演员错误通知 [英] AKKA: Painless Actor Error Notifications

问题描述

• 一个组件美丽正在使用她内部 akka.actor.Actor 来执行某些操作。（例如执行）

• A component BEAUTIFUL is using her internal akka.actor.Actor to do certain things.. ( such as "acting up" for example )

还有其他 MAN 组件确实希望与 BEAUTIFUL

There are other MAN components that would really like to "interact" with the BEAUTIFUL

当美丽发现值得的 MAN 时，在进行交互之前和他一起，她同意输入他的电话号码（我们称它为 ErrorHandler ），如果他早上离开而忘记了，他会给他打电话他在床头柜上的劳力士

When the BEAUTIFUL finds a MAN worthy, before "interacting" with him, she agrees to take in his phone number ( let's call it an ErrorHandler ), you know just to give him a call in case he left in the morning and forgot his Rolex on her bed side table

美丽虽然是高维护成本（他们都..），并且每次 BEAUTIFUL 的内部Actor内部发生不良情况（例如， OmgBrokenNailException ， UglyPurseThrowable 等），她疯了，需要完全停下来并呼叫 MAN 使用该电话号码（例如 errorHandler.getOnItNowHoney（message，throwable））

The BEAUTIFUL though is "high maintenance" ( aren't they all.. ), and every time something bad happens inside the BEAUTIFUL's internal Actor ( e.g. an OmgBrokenNailException, UglyPurseThrowable, etc.. ), she goes nuts, needs to stop completely and to call a MAN using that phone number ( e.g. errorHandler.getOnItNowHoney( message, throwable ) )

AKKA主管允许注册两种类型的FaultHandlers => OneForOneStrategy 和 AllForOneStrategy ，如果基础Actor覆盖preRestart / postRestart，则它可以访问实际的可抛出，例如：

AKKA supervisors allow to register two types of FaultHandlers => OneForOneStrategy and AllForOneStrategy, where if the underlying Actor overrides preRestart/postRestart, it gets access to an actual "throwable" e.g.:

override def preRestart( reason: Throwable ) { // do with throwable... }

问题是这两种策略都将尝试重新启动Actor，这不是我想要的。我正在寻找Actor用 throwable调用外部 ErrorHandler 并停止。

The problem is both of these strategies will try to restart the Actor(s), which is not something that I am looking for. I am looking for the Actor to call an external ErrorHandler with the "throwable" and stop.

如果我不这样做不要使用这些策略，当从A​​ctor中引发异常时，在Actor上调用 postStop ，这很酷，但它不会包含可抛出 ：

If I don't use these strategies, when exception is thrown from within the Actor, a postStop is called on the Actor, which is cool, but it does not take in a "throwable":

override def postStop() { // no access to "throwable"... }

帮助 MAN 来获得 throwable

推荐答案

在Akka 2中，您应该使用死亡监视

In Akka 2 you should use DeathWatch

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