gistfile1.txt

package com.bam.device

import java.util.concurrent.TimeUnit
import akka.actor._
import com.bam.commons.{Common, DeviceStatsCommon}
import com.bam.data.DeviceMacAddress
import com.bam.data.tag.SensorSerial
import com.bam.device.bloh.BlohConfig
import com.bam.device.bloh.client.netty.NettyAsyncUplink.UplinkMessages
import com.bam.device.bloh.client.netty.{NettyAsyncDownlink, NettyAsyncUplink}
import com.bam.device.bloh.tag._
import com.bam.device.blohProtocol.{BlohConstants, BlohMessage}
import com.bam.domain._
import com.bam.exception.DeviceFSMStopException
import io.netty.handler.codec.http.cookie.DefaultCookie
import org.joda.time.{DateTime, DateTimeZone}

import scala.collection.JavaConverters._
import scala.collection.immutable.Queue
import scala.collection.mutable.ArrayBuffer
import scala.concurrent.duration._
import collection.JavaConversions._

/**
 * Created by vikas on 10/5/16.
 */

object DeviceFSM {

  // Actor commands
  case class PutInBed(forPeriod: Duration = Duration.Inf)

  case object PutOutOfBed

  case class StopDevice()

  case class Tick(time: DateTime)

  case object AckTimeout

  case class UpdateSoftware(deviceId: DeviceMacAddress, version: String) extends DeviceSpecific

  case class ThreeXRate(buf:Boolean, time: Long)

  case class ThreeXRateStop()

  case class ConnectDisconnect(time:Long)

  case class ConnectDisconnectStop()

  // FSM states
  sealed trait ConnectionState

  case object Connecting extends ConnectionState

  case object Connected extends ConnectionState

  case object WaitingForSendAck extends ConnectionState

  // FSM data
  case class Data(uplink: Option[ActorRef] = None, downlink: Option[ActorRef] = None,
                  numOfAttempts: Int = 0, backlog: Queue[BlohMessage] = Queue.empty, connectionId: String = null)

  // Actor creation factory.
  trait PropsFactory {
    def props(mac: DeviceMacAddress, supervisor: ActorRef, bc: BlohConfig, requestConnectionResponse: RequestConnectionResponse, scenarioBean: ScenarioBean, scenarioName: String): Props
  }

  object DefaultFactory extends PropsFactory {
    def props(mac: DeviceMacAddress, supervisor: ActorRef, bc: BlohConfig, requestConnectionResponse: RequestConnectionResponse, scenarioBean: ScenarioBean, scenarioName: String): Props = Props(new DeviceFSM(mac, supervisor, bc, requestConnectionResponse, scenarioBean, scenarioName))
  }

}

class DeviceFSM(mac: DeviceMacAddress, supervisor: ActorRef, bc: BlohConfig, requestConnectionResponse: RequestConnectionResponse, scenarioBean: ScenarioBean, scenarioName: String) extends Actor with FSM[DeviceFSM.ConnectionState, DeviceFSM.Data] with DiagnosticActorLogging {

  import DeviceFSM._
  import context.dispatcher

  var tickSec: Long = 0
  val random = new scala.util.Random
  val zeroSecDuration = FiniteDuration(0, TimeUnit.SECONDS)
  val scenarioBeanParametersByName = Common.getScenarioBeanParametersMap.get(scenarioName)
  var lastStepIndex = -1
  var eveningSecRandom = 0
  var morningSecRandom = 0

  scenarioBean.setStartScenarioBeanFromParams(scenarioBeanParametersByName.getStartParams)

  val eveningDuration = asScalaBuffer(scenarioBeanParametersByName.getSteps())
    .toList.find(x => x.getTypeOfDay == TimeofDayType.DAY).get.getDurationInSec

  val dayDuration = asScalaBuffer(scenarioBeanParametersByName.getSteps())
    .toList.find(x => x.getTypeOfDay == TimeofDayType.EVENING).get.getDurationInSec

  val nightDuration = asScalaBuffer(scenarioBeanParametersByName.getSteps())
    .toList.filter(x => x.getTypeOfDay == TimeofDayType.NIGHT)
    .map(_.getDurationInSec)
    .foldLeft(0l)((acc, curr) => acc + curr)

  val morningDuration = asScalaBuffer(scenarioBeanParametersByName.getSteps())
    .toList.find(x => x.getTypeOfDay == TimeofDayType.MORNING).get.getDurationInSec

  val totalDuration = eveningDuration + dayDuration + nightDuration + morningDuration

  val eveningRandomRange = 0 to eveningDuration.toInt

  var stubDevice = new BlohMessageGenerator(scenarioBean)
  val messagesSchedule = context.system.scheduler.schedule(1.second, 1.second)(sendTick)
  val MAX_BACKLOG = 5 * 60
  val THREEXRATE_STEP = 3
  val MAX_UNSIGNED_SHORT_VALUE = Short.MaxValue * 2 + 1
  // 5 minutes of data to keep
  val BACKLOG_SENDING_SPEED: Int = 5
  val logController: Int = 0
  var terminatedChild: Boolean = false
  var terminatedChildAtConnecting: Boolean = false
  var seqNumCounter: Int = -1
  var isInBedSignalSent = false

  private[this] var noopCounter = 0
  private[this] var ackCounter = 0
  private[this] var sensorFlags: Map[SensorSerial, Int] = Map.empty
  private[this] var reconnectTimeout = 60.seconds
  private[this] var deviceTime = now
  private[this] var uplinkConnected = false
  private[this] var downlinkConnected = false
  private[this] var threeXRateDuration: Option[Long] = None
  val deviceInBedStats = DeviceStatsCommon.getDeviceInBedStats;
  val connectedDeviceSet = DeviceStatsCommon.getConnectedDeviceSet;
  var seqNumBuffer = ArrayBuffer.empty[Int]
  val ackThreshold = new FiniteDuration(Common.getProps.getProperty("downlink.ack.threshold.seconds").toLong, TimeUnit.SECONDS)

  override val supervisorStrategy =
    AllForOneStrategy(maxNrOfRetries = 0) {
      case e: Exception => {
        log.info("In DeviceFSM strategy, sending stop signal", e)
        DeviceStatsCommon.getDisconnectedDevices.put(mac.getAddressAsString, new DisconnectDeviceProperty(0, null, null))
        connectedDeviceSet.remove(mac.getAddressAsString)
        DeviceStatsCommon.decrementDeviceRunCount();

        if (deviceInBedStats.get(self)) {
          DeviceStatsCommon.decrementDeviceInBedCount();
        }
        deviceInBedStats.remove(self);

        stop(FSM.Failure(s"Stopping device actor as one of the child is failed to connect ! device ${mac.toString()}, will get restart from supervisor actor"))
        SupervisorStrategy.Stop
      }
    }

  override def postStop() {
    super.postStop
    messagesSchedule.cancel
  }

  override val log = akka.event.Logging(this)

  override def mdc(msg: Any) = Map("deviceId" -> mac, "target" -> supervisor.path.name)

  startWith(Connecting, connect)

  when(Connecting)//(transform
  {
    case Event(c: NettyAsyncUplink.Connected, data: Data) =>
    log.info("Uplink Connected for mac {} ", mac.getAddressAsString);
      uplinkConnected = true;
      if (downlinkConnected) {log.info("Both uplinke and downlink connected for mac {} ", mac.getAddressAsString); goto(Connected) using data.copy(numOfAttempts = 0) }
      else stay
    case Event(c: NettyAsyncDownlink.Connected, data: Data) =>
    log.info("Downlink Connected for mac {} ", mac.getAddressAsString);
      downlinkConnected = true;
      if (uplinkConnected) {log.info("Both uplinke and downlink connected for mac {} ", mac.getAddressAsString); goto(Connected) using data.copy(numOfAttempts = 0)}
      else stay
    case Event(t: Terminated, data: Data) =>
      if (data.numOfAttempts < 3) {
        if (t.getActor.path.name.equals("uplink")) {
          log.info("Uplink terminated for {} while establishing connnection, reconnecting with new uplink actor, reconnect attempts# {}", mac.getAddressAsString, data.numOfAttempts)
          val uplinkRef = context.actorOf(Props(new NettyAsyncUplink(self, requestConnectionResponse.getConnectionId, requestConnectionResponse.getUpLinkUri, requestConnectionResponse.getCookies.asScala.toList)), "uplink")
          context.watch(uplinkRef)
          goto(Connecting) using data.copy(uplink = Option(uplinkRef), numOfAttempts = data.numOfAttempts + 1)
        }
        else if (t.getActor.path.name.equals("downlink")) {
          log.info("Downlink terminated for {} while establishing connnection, reconnecting with new downlink actor, reconnect attempts# {}", mac.getAddressAsString, data.numOfAttempts)
          val downlinkRef = context.actorOf(Props(new NettyAsyncDownlink(self, requestConnectionResponse.getConnectionId, requestConnectionResponse.getDownLinkUri, requestConnectionResponse.getCookies.asScala.toList)), "downlink")
          context.watch(downlinkRef)
          goto(Connecting) using data.copy(downlink = Option(downlinkRef), numOfAttempts = data.numOfAttempts + 1)
        } else {
          log.info("Either Uplink or Downlink terminated for {} while establishing connnection, reconnecting new actors, reconnect attempts# {}", mac.getAddressAsString, data.numOfAttempts)
          context unwatch data.uplink.get
          context unwatch data.downlink.get
          context stop data.uplink.get
          context stop data.downlink.get
          val uplinkRef = context.actorOf(Props(new NettyAsyncUplink(self, requestConnectionResponse.getConnectionId, requestConnectionResponse.getUpLinkUri, requestConnectionResponse.getCookies.asScala.toList)), "uplink")
          context.watch(uplinkRef)
          val downlinkRef = context.actorOf(Props(new NettyAsyncDownlink(self, requestConnectionResponse.getConnectionId, requestConnectionResponse.getDownLinkUri, requestConnectionResponse.getCookies.asScala.toList)), "downlink")
          context.watch(downlinkRef)
          goto(Connecting) using data.copy(uplink = Option(uplinkRef), downlink = Option(downlinkRef), numOfAttempts = data.numOfAttempts + 1)
        }
      } else {
        terminatedChildAtConnecting = true
        if (deviceInBedStats.get(self)) {
          DeviceStatsCommon.decrementDeviceInBedCount()
        }
        deviceInBedStats.remove(self)
        DeviceStatsCommon.decrementDeviceRunCount();
        log.info("Made 3 attempts while connecting before stopping actor for mac: {}", mac.toString)
        stop(FSM.Failure(s"Either uplink or downlink terminated while establishing connnection! device ${mac.toString()}, try 3 times, stoping device actor"))
      }
  }
  //using sendBacklogIfExists)

  onTransition {
    case Connecting -> Connected =>
      connectedDeviceSet.add(mac.getAddressAsString);
      setTimer("downlinkAck", AckTimeout, ackThreshold, false);
      log.info("On transition Connecting -> Connected for mac {}", mac.getAddressAsString)
    case Connecting -> WaitingForSendAck =>
      connectedDeviceSet.add(mac.getAddressAsString);
      log.info("On transition Connecting -> Waiting for send ack for mac {}", mac.getAddressAsString)
  }

  when(Connected)(combine({
    //TODO check the data for other fields exists here
    case Event(Tick(time), Data(Some(uplink), _, _, _, _)) =>
      val stepIndex = getCurrentScenarioStepIndex
      val currentTypeOfDay = scenarioBeanParametersByName.getSteps.get(stepIndex).getTypeOfDay
      if (lastStepIndex != stepIndex) {
        lastStepIndex = stepIndex
        if (currentTypeOfDay == TimeofDayType.DAY) {
          setInBedTimer
        }
      }
      if (currentTypeOfDay == TimeofDayType.EVENING
        || currentTypeOfDay == TimeofDayType.NIGHT) {
        if (isInBedSignalSent && currentTypeOfDay == TimeofDayType.EVENING) {
          scenarioBean.setScenarioBeanFromParams(scenarioBeanParametersByName.getSteps.get(stepIndex + 1).getParams)
        } else {
          scenarioBean.setScenarioBeanFromParams(scenarioBeanParametersByName.getSteps.get(stepIndex).getParams)
        }
      }
      tickSec = (tickSec + 1) % totalDuration

      if (!DeviceStatsCommon.getConnDisconnDeviceMap.keySet().contains(mac.getAddressAsString)
          || time.getMillis >= DeviceStatsCommon.getConnDisconnDeviceMap.get(mac.getAddressAsString).getTime) {
        if (DeviceStatsCommon.getConnDisconnDeviceMap.keySet().contains(mac.getAddressAsString)) {
          DeviceStatsCommon.getConnDisconnDeviceMap.remove(mac.getAddressAsString)
          DeviceStatsCommon.decrementConnDisconnCount()
        }
        threeXRateDuration match {
          case Some(duration) =>
            val messages = (0 to 2).map { offset =>
              val messageTime = (time.getMillis - duration * 1000) + offset * 1000
              stubDevice.createMessage(new DateTime(messageTime, DateTimeZone.UTC), getSeqNum)
            }.toList

            messages.foreach { msg =>
              seqNumBuffer += msg.getSeqNum
              uplink ! msg; setAckTimer;
            }
            threeXRateDuration = Some(duration - THREEXRATE_STEP)
            if (threeXRateDuration.get <= 0) {
              threeXRateDuration = None
              DeviceStatsCommon.decrementThreeXRateCountt()
              log.info("Switched to 1X rate mode for mac: {}", mac.getAddressAsString)
            }
          case None =>
            val msg = stubDevice.createMessage(time, getSeqNum)
            seqNumBuffer += msg.getSeqNum
            uplink ! msg; setAckTimer;
        }
        goto(WaitingForSendAck)
      } else stay
    //After Ack time out if sent event come from Uplink will fall into connected state, no need to do anything
    case Event(NettyAsyncUplink.Sent(id), data) => stay
    case Event(ThreeXRate(false, duration), _) =>
      log.info("Switched to 3X rate mode with duration: {} s for mac: {}", duration, mac.getAddressAsString)
      threeXRateDuration = Some(duration);
      stay
    case Event(NettyAsyncDownlink.MessageReceived(blohMsg), data: Data) =>
      processClientMessage(data.connectionId, blohMsg); stay
    case Event(AckTimeout, _) =>
      log.info("Downlink ACK timeout for mac {}", mac.getAddressAsString); stay
  }, handleDisconnect))

  when(WaitingForSendAck)(transform(combine({
    case Event(NettyAsyncUplink.Sent(id), data) => cancelAckTimer; goto(Connected)
    case Event(AckTimeout, data) => log.info("Uplink mesage ACK timeout for mac {}", mac.getAddressAsString); goto(Connected)
  }, handleDisconnect)) using sendBacklogIfExists)

  whenUnhandled {
    case Event(Tick(time), data) => ; stay using enqueDataPacket(time, data)

    case Event(PutInBed(forPeriod), _) =>
      if (!deviceInBedStats.get(self)) {
        isInBedSignalSent = true
        log.debug("Put device In Bed! for mac: { } with timeout= {}", mac.getAddressAsString, forPeriod.asInstanceOf[FiniteDuration].toString())
        stubDevice.putInBed;
        DeviceStatsCommon.incrementDeviceInBedCount
        deviceInBedStats.put(self, true)
        if (forPeriod.isFinite) {
          setTimer("outOfBed", PutOutOfBed, forPeriod.asInstanceOf[FiniteDuration], false)
        }
      } else {
        log.info("Put in bed got for mac {} which is already in bed, nothing to do ", mac.getAddressAsString)
      }
      stay

    case Event(PutOutOfBed, _) => stubDevice.putOutOfBed
      if (deviceInBedStats.get(self)) {
        log.debug("Put device out of bed! for mac: {} ", mac.getAddressAsString)
        isInBedSignalSent = false
        cancelTimer("outOfBed")
        deviceInBedStats.put(self, false)
        DeviceStatsCommon.decrementDeviceInBedCount
      } else {
        log.info("Put out of bed got for mac {} which is already out of bed, shouldn't happen, canceling timer if any ", mac.getAddressAsString)
        cancelTimer("outOfBed") //Defensive to cancel timer as it wont harm anything
      }
      stay

    case Event(StopDevice, data: Data) =>
      context unwatch data.uplink.get
      context unwatch data.downlink.get
      context stop data.uplink.get
      context stop data.downlink.get
      context stop self
      stay

    case Event(NettyAsyncDownlink.MessageReceived(blohMsg), data: Data) =>
      processClientMessage(data.connectionId, blohMsg); stay

    case Event(any, data) => log.info("Got unhandled event: {} in connected state for mac address: {}", any, mac.getAddressAsString); stay
  }

  /**
   *
   * @return
   */
  def now = new DateTime(DateTimeZone.UTC) //.withMillis(0L)

  def getCurrentScenarioStepIndex: Int = {
    var i = 0
    var sumOfStepDurations = scenarioBeanParametersByName.getSteps.get(0).getDurationInSec
    while(i != scenarioBeanParametersByName.getSteps.size) {
      if (tickSec < sumOfStepDurations) {
        return i
      } else {
        sumOfStepDurations += scenarioBeanParametersByName.getSteps.get(i + 1).getDurationInSec
        i += 1
      }
    }
    i
  }

  /**
   *
   */
  def sendTick = {
    deviceTime = deviceTime.plusSeconds(1)
    self ! DeviceFSM.Tick(deviceTime)
  }

  /**
   *
   * @return
   */
  def connect: DeviceFSM.Data = {
    log.info("Connecting device with macaddress :" + mac.getAddressAsString)
    uplinkConnected = false;
    downlinkConnected = false;
    createUplinkAndDownlink(requestConnectionResponse.getConnectionId, requestConnectionResponse.getCookies.asScala.toList, requestConnectionResponse.getUpLinkUri, requestConnectionResponse.getDownLinkUri)
  }

  /**
   *
   * @param connectionId
   * @param cookies
   * @param up
   * @param down
   * @return
   */
  def createUplinkAndDownlink(connectionId: String, cookies: List[DefaultCookie], up: String, down: String): DeviceFSM.Data = {
    log.info("Creating uplink and downlink actor for mac {}", mac.getAddressAsString)
    val uplinkRef = context.actorOf(Props(new NettyAsyncUplink(self, connectionId, up, cookies)), "uplink")
    context.watch(uplinkRef)
    val downlinkRef = context.actorOf(Props(new NettyAsyncDownlink(self, connectionId, down, cookies)), "downlink")
    context.watch(downlinkRef)
    Data(Option(uplinkRef), Option(downlinkRef), 0, Queue.empty, connectionId)
  }

  /**
   *
   * @param time
   * @param data
   * @return
   */
  def enqueDataPacket(time: DateTime, data: Data): Data = {
    val msg = stubDevice.createMessage(time, getSeqNum)
    val backlog = data.backlog.enqueue(msg)
    if (backlog.size > MAX_BACKLOG) {
      if (!terminatedChildAtConnecting) {
        log.info(s"In Enque Data packet for mac =${mac.getAddressAsString}, backlog.size > MAX_BACKLOG. backlog.size = ${backlog.size}. state $stateName")
        data.copy(backlog = backlog.dequeue._2)
      } else {
        log.info("No child running for Devise FSM, throwing null pointer exception for mac: {}", mac.toString)
        throw new DeviceFSMStopException("All children already stop, lets stop the DeviceFSM ")
      }
    } else {
      data.copy(backlog = backlog)
    }
  }

  /**
    *
    */
  def getSeqNum = {
    seqNumCounter = (seqNumCounter + 1) % (MAX_UNSIGNED_SHORT_VALUE + 1)
    seqNumCounter
  }

  def setInBedTimer = {
    eveningSecRandom = eveningRandomRange(random.nextInt(eveningRandomRange.length))
    val putInBedTimerDuration = FiniteDuration(dayDuration + eveningSecRandom, SECONDS)
    val forPeriod = FiniteDuration(nightDuration, SECONDS)
    log.info("Move device {} to in bed after {} sec", mac.getAddressAsString, putInBedTimerDuration)
    setTimer("putInBed", PutInBed(forPeriod), putInBedTimerDuration, false)
  }

  /**
   *
   */
  def setAckTimer {
    setTimer("ack", AckTimeout, 5.seconds, false)
  }

  /**
   *
   */
  def cancelAckTimer = cancelTimer("ack")

  /**
   *
   * @param n
   * @param queue
   * @param acc
   * @return
   */
  def dequeFirstN(n: Int, queue: Queue[BlohMessage], acc: ArrayBuffer[BlohMessage]): Queue[BlohMessage] = {
    require(n >= 0)
    queue.dequeueOption match {
      case Some(a) =>
        if (n == 0) {
          a._2
        } else {
          dequeFirstN(n - 1, a._2, acc.+=(a._1))
        }
      case None => queue
    }
  }

  /**
   *
   * @return
   */
  def sendBacklogIfExists: PartialFunction[State, State] = {
    //TODO check data state
    case [email protected](state, data@Data(Some(uplink), _, _, backlog, _), timeout, stopReason, replies) if !backlog.isEmpty =>
      if (!terminatedChild) {
        val acc = new ArrayBuffer[BlohMessage]()
        val rb = dequeFirstN(BACKLOG_SENDING_SPEED, backlog, acc)
        if (acc.size > 5) {
          log.info("Sending backlog size: {} Messages left: {} For mac: {} ", acc.size, rb.size, mac.getAddressAsString)
        } else {
          log.info("Sending backlog size: {} Messages left: {} For mac: {} ", acc.size, rb.size, mac.getAddressAsString)
        }
        uplink ! UplinkMessages(acc(0).getSeqNum, acc.toList);
        setAckTimer
        goto(WaitingForSendAck) using data.copy(backlog = rb)
      } else {
        //Stopping DeviceFSM here as Akka was not able to stop the device in handle disconnect, may be issue with Akka
        log.info("Child already terminated for Devise FSM, throwing null pointer exception for mac: {}", mac.toString)
        throw new DeviceFSMStopException("All children already stop, lets stop the DeviceFSM ")
      }
  }

  /**
   *
   * @param first
   * @param second
   * @return
   */
  def combine(first: StateFunction, second: StateFunction): StateFunction = first.orElse(second)

  /**
   * We should keep trying for disconnection without any limit ideally just like the actual device, no need to start device, just bring down both uplink and downlink and reconnect.
   * @return
   */
  def handleDisconnect: StateFunction = {
    case Event(Terminated(t: ActorRef), data) =>
      if (!terminatedChild) {
        val name = t.path.name
        log.info("Either uplink or downlink actor terminated with name {}! for mac: {}, restarting both uplink and downlink actor", name, mac.getAddressAsString)
        terminatedChild = true
        if (t.path.name.equals("downlink")) {
          context stop data.uplink.get
          context unwatch data.uplink.get
        } else if (t.path.name.equals("uplink")) {
          context stop data.downlink.get
          context unwatch data.downlink.get
        }
        if (deviceInBedStats.get(self)) {
          DeviceStatsCommon.decrementDeviceInBedCount();
        }
        deviceInBedStats.remove(self);

        if (connectedDeviceSet.contains(mac.getAddressAsString)) {
          DeviceStatsCommon.getDisconnectedDevices.put(mac.getAddressAsString, new DisconnectDeviceProperty(0, null, null))
          connectedDeviceSet.remove(mac.getAddressAsString)
          DeviceStatsCommon.decrementDeviceRunCount();
        }
        log.info("Before stopping the DeviceFSM for device : {}", mac.toString)
        stop(FSM.Failure(s"In handleDisconnect Stopping device actor as one of the child is failed to connect ! device ${mac.toString()}, will get restart from supervisor actor"))
      } else {
        log.info("Child already terminated for Devise FSM, stopping device fsm actor for mac: {}", mac.toString)
        stop(FSM.Failure(s"In handleDisconnect Stopping device actor as one of the child is failed to connect ! device ${mac.toString()}, will get restart from supervisor actor"))
      }

    case Event(Terminated, data) =>
      if (!terminatedChild) {
        log.info("Either uplink or downlink actor terminated without disconnect! for mac: {}, restarting both uplink and downlink actor ", mac.getAddressAsString)
        terminatedChild = true;
        context unwatch data.uplink.get
        context unwatch data.downlink.get
        context stop data.uplink.get
        context stop data.downlink.get

        if (deviceInBedStats.get(self)) {
          DeviceStatsCommon.decrementDeviceInBedCount();
        }
        deviceInBedStats.remove(self);

        if (connectedDeviceSet.contains(mac.getAddressAsString)) {
          DeviceStatsCommon.getDisconnectedDevices.put(mac.getAddressAsString, new DisconnectDeviceProperty(0, null, null))
          connectedDeviceSet.remove(mac.getAddressAsString)
          DeviceStatsCommon.decrementDeviceRunCount();
        }
        log.info("Before stopping the DeviceFSM for device : {}", mac.toString)
        stop(FSM.Failure(s"In handleDisconnect Stopping device actor as one of the child is failed to connect ! device ${mac.toString()}, will get restart from supervisor actor"))
      } else {
        log.info("Child already terminated for Devise FSM, stopping device fsm actor for mac: {}", mac.toString)
        stop(FSM.Failure(s"In handleDisconnect Stopping device actor as one of the child is failed to connect ! device ${mac.toString()}, will get restart from supervisor actor"))
      }
  }

  /**
   *
   * @param connectionId
   * @param blohMsg
   */
  def processClientMessage(connectionId: String, blohMsg: BlohMessage) = blohMsg.getType() match {
    case BlohConstants.TYPE_NOOP =>
      log.info("Receive NOOP message! device={} connectionId={}", mac.getAddressAsString, connectionId); noopCounter += 1
    case BlohConstants.TYPE_DOWNLINK_COMMANDS =>
      log.info("Receive Device Command message! device={} connectionId={}", mac.getAddressAsString, connectionId)
      processCommands(blohMsg.getBuf())
  }

  /**
   *
   * @param buf
   */
  private[this] def processCommands(buf: Array[Byte]) {
    var sensor = new SensorSerial(0)
    TagParser.parse(buf).fold({ err => log.error("Error parsing tagged message: {}", err) }, _.foreach {
      case Ack(seq) =>
        log.info("Receive ACK message! device={}", mac.getAddressAsString);
        ackCounter += 1
        val index = seqNumBuffer.indexOf(seq)
        seqNumBuffer = seqNumBuffer.drop(index + 1)
        setTimer("downlinkAck", AckTimeout, ackThreshold, false)
      case s: Sensor => sensor = new SensorSerial(s.serial); log.info("Set sensor message! device={}, sensor={}", mac.getAddressAsString, sensor.getSerialNumber());
      case RuntimeFlags(flags) =>
        log.info("Receive runtime flags! device={} sensor={} flags={}", mac.getAddressAsString, sensor.getSerialNumber(), flags)
        try {
          stubDevice.setRuntimeFlags(sensor, flags)
        } catch {
          case iae: IllegalArgumentException => log.info("Illegal Argument Exception, Invalid sensor or runtime flags! " + iae.getMessage)
          case e: Exception => log.info("Exeption, Invalid sensor or runtime flags!" + e.getMessage)
        }
        sensorFlags += sensor -> flags
      case tagId => log.info("Receive command tag:{} for mac {}", tagId, mac.getAddressAsString)
    })
  }

}