阿卡演员不能发送自己的PoisonPill

Question

Java/Akka在这里.我有以下演员:

public class MyActor extends AbstractActor {
    private Logger log = LoggerFactory.getLogger(this.getClass());

    public MyActor() {
        super();
    }

    @Override
    public Receive createReceive() {
        return receiveBuilder()
            .match(Init.class, init -> {
                log.info("Sending myself a Poison Pill...");
                self().tell(PoisonPill.getInstance(), self());
            }).match(PoisonPill.class, poisonPill -> {
                log.info("Got the Poison Pill...");
                context().system().terminate();
            }).build();
    }
}

收到Init消息后,我看到写入以下日志语句:

Sending myself a Poison Pill...

但我从未见过:

Got the Poison Pill...

此外,该应用程序只是坐在那里,并没有按预期关闭.我使用的是self().tell(PoisonPill.getInstance(), self())什么阻止它接收消息并关闭？

Answer 1

日志消息不会出现,因为PoisonPill是AutoReceivedMessage.An AutoReceivedMessage是一种特殊类型的消息,Akka在内部处理,并不意味着在用户代码中进行模式匹配.

一旦actor被"中毒"/停止,关闭actor系统的postStop()一种方法是覆盖actor的方法:

@Override
public Receive createReceive() {
  return receiveBuilder()
    .match(Init.class, init -> {
      log.info("Sending myself a Poison Pill...");
      self().tell(PoisonPill.getInstance(), ActorRef.noSender());
    })
    .build();
}

@Override
public void postStop() {
  getContext().getSystem().terminate();
}