Question

我正在尝试使用Sink.actorRefWithAck将一个http响应流式传输给一个actor，但不知何故没有发送给这个接收器actor但是init和完整的msgs。我可能错过了一些非常明显的东西。接收器演员很好地发起了。以下是流媒体演员的代码：

override def receive: Receive = {
    case GetTestData(p, id) =>
      // Get the data and pipes it to itself through a message as recommended

      http.singleRequest(HttpRequest(uri = uri.format(p, id)))
        .pipeTo(self)

    case HttpResponse(StatusCodes.OK, _, entity, _) =>
      // Sink as actorRef
      val sink = Sink.actorRefWithAck(context.actorOf(TestJob2.props(), "testJob2Actor"), Init, Ack, Complete)
      // Pipe the response body to the actor sink
      entity.dataBytes.runWith(sink)

    case resp @ HttpResponse(code, _, _, _) =>
      log.error("Request to test job failed, response code: " + code)
      // Discard the flow to avoid backpressure
      resp.discardEntityBytes()

    case _ => log.warning("Unexpected message in TestJobActor")
}

这里是接收器actor的代码：

override def receive: Receive = {
  case Init =>
    log.info("TestJob2Actor got init sink message")
    sender ! Ack

  case Complete => log.info("TestJob2Actor got complete sink message")

  case b: ByteString =>
    log.debug(b.utf8String)
    sender ! Ack

  case _ => log.warning("Unexpected message in TestJob2Actor")
}

输出：

2018-01-25 17：26：58,530 INFO com.mcma.actors.Supervisor akka.tcp：//alor-system@10.33.135.82：8000 / user / supervisorActor - SupervisorActor将GetTestData消息转发给TestJobActor

2018-01-25 17：26：59,243 INFO com.mcma.actors.jobs.TestJob akka.tcp：//alor-system@10.33.135.82：8000 / user / supervisorActor / testJobActor - TestJob actor started

2018-01-25 17：27：00,052 INFO com.mcma.actors.jobs.TestJob2 akka.tcp：//alor-system@10.33.135.82：8000 / user / supervisorActor / testJobActor / testJob2Actor - TestJob2 actor started

2018-01-25 17：27：00,067 INFO com.mcma.actors.jobs.TestJob2 akka.tcp：//alor-system@10.33.135.82：8000 / user / supervisorActor / testJobActor / testJob2Actor - TestJob2Actor get init接收消息

2018-01-25 17：27：00,083 INFO com.mcma.actors.jobs.TestJob2 akka.tcp：//alor-system@10.33.135.82：8000 / user / supervisorActor / testJobActor / testJob2Actor - TestJob2Actor完成接收消息

Answer 1

想法：（1）来自Source的{{1}}可能为空，或者（2）接收者实际上正在处理entity.dataBytes块，但是日志记录级别是调试消息不可见。尝试将您的日志记录级别设置为DEBUG，或将ByteString更改为log.debug(b.utf8String)。

阿卡流向演员问题

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