Exemplo n.º 1
0
// SendOrder sends the parameter order struct to the network
func SendOrder(order OrderMessage) {
	if order.Direction == driver.DirectionNone {
		log.Warning("Transmitted order cannot have no direction")
		return
	}
	order.SenderID = elevatorID
	str := orderToStr(order)
	log.Debug("Sending message: ", str)
	udpSendCh <- udp.Udp_message{Raddr: "broadcast", Data: str}
}
Exemplo n.º 2
0
// OrderAcceptedRemotely yay!
func OrderAcceptedRemotely(floor driver.Floor, dir driver.Direction) {
	if floor == 0 {
		dir = driver.DirectionUp
	} else if floor == driver.NumFloors-1 {
		dir = driver.DirectionUp
	}
	// Algorithmically excellent searching
	for o := pendingOrders.Front(); o != nil; o = o.Next() {
		v := o.Value.(*order)
		if v.floor == floor && v.dir == dir {
			v.timer.Reset(timeoutDelay + calculateTimeout(floor, dir))
			return
		}
	}

	// Already completed? Maybe a late package or wtf
	log.Warning("Non-existant job accepted remotely")
}
Exemplo n.º 3
0
// InitAndHandle initializes network and handles receive
func InitAndHandle(receiveCh chan<- OrderMessage, id uint) {
	udpSendCh = make(chan udp.Udp_message, 8)
	udpRecvCh = make(chan udp.Udp_message, 8)

	elevatorID = id

	udp.Udp_init(LPORT, BPORT, MSGLEN, udpSendCh, udpRecvCh)

	for {
		msg := <-udpRecvCh
		if msg.Length != 8 { // Disregard messages not 8 in length
			log.Warning("Non-8-byte message received")
			continue
		}
		order := strToOrder(msg.Data)
		if order.SenderID != elevatorID { // Don't loop
			log.Info("Received order: ID: ", order.SenderID, ", type: ", order.Type, ", floor: ", order.Floor)
			receiveCh <- order
		}
	}
}
Exemplo n.º 4
0
// Reset makes sure the elevator is at a safe floor on startup
// Blocking, should never be called when listeners are running
func Reset() Floor {
	log.Debug("Resetting floor")
	currentFloor := getFloor()

	if currentFloor == -1 {
		log.Warning("Unknown floor")
		// Move down until we hit something
		RunDown()
		for {
			currentFloor = getFloor()
			if currentFloor != -1 {
				break
			}
		}
		log.Info("At floor ", currentFloor, ", ready for service")
		setFloorIndicator(currentFloor)
		Stop()
		OpenDoor()
		time.Sleep(time.Second)
		CloseDoor()
	}
	return currentFloor
}