从监督演员中重新启动Akka演员

Question

我有一组运行TCP服务器的设备。在我的应用中，我想为每个设备维护一个TCP连接。为了从故障中恢复，每个连接都是受监督的Akka角色，从中央角色TcpClientManager开始。

无论当前上下文如何，我也想从REST调用中重新启动这样的连接。

这就是为什么我要从父actor（即TcpClientManager` actor）中重新启动它。在这种情况下，我似乎只能停止 supervising 演员。那是对的吗？应该如何重新启动基础参与者？

class TcpClientManager(devices: Seq[Device]) extends Actor with ActorLogging {

  var idToActor = Map.empty[String, ActorRef]

  override def preStart(): Unit =
    devices(device => {

      val tcpClientProps =
        TcpClient.props(device)

      val tcpClientSupervisorActor = BackoffSupervisor.props(
        Backoff.onStop(
          childProps = tcpClientProps,
          childName = s"tcpCient-${device.id}",
          minBackoff = 1 seconds,
          maxBackoff = 5 seconds,
          randomFactor = 0.2,
          maxNrOfRetries = -1
        ))

      idToActor += device.id -> context.actorOf(
        tcpClientSupervisorActor,
        name = s"tcpClientSupervisorActor-${device.id}")
      })

  override def receive: Receive = {

    case ResetConnection(id) => {
      println(s"reset connection for deviceId  $id")
      idToActor.get(id).foreach(context.stop(_)) // not really... this stops the supervisor
    }
  }
}