// 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}
}
// 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")
}
// 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
}
}
}
// 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
}