// Internalrequest deals with internal requests and makes sure corresponding elevator will be used to answer the request
func Internalrequest(localip string, Elevatorlist []extra.Elevator, request Network.Request) {
var statelist = make(map[string]Network.Info)
infolist := Network.GetInfoList()
for host, info := range infolist {
statelist[host] = info
}
Internalloop:
for i := 0; i < 4; i++ { // N_FLOORS ca marche pas
for _, elevator := range Elevatorlist {
if info, ok := statelist[elevator.Address]; ok {
if i != 0 && (info.State == "UP" && info.PreviousFloor+i == request.Floor) || (info.State == "DOWN" && info.PreviousFloor-i == request.Floor) {
if statelist[elevator.Address].Ipsource == localip {
internalrequest = request
} else {
delete(statelist, elevator.Address)
continue Internalloop
}
}
}
}
for _, elevator := range Elevatorlist {
if info, ok := statelist[elevator.Address]; ok {
if info.State == "IDLE" && (info.PreviousFloor == request.Floor+i || info.PreviousFloor == request.Floor-i) {
if statelist[elevator.Address].Ipsource == localip {
internalrequest = request
} else {
delete(statelist, elevator.Address)
continue Internalloop
}
}
}
}
}
}
// Nextrequest will provide the best elevator for each request, using the three above functions
func Nextrequest(localip string, Elevatorlist []extra.Elevator) Network.Request {
var statelist = make(map[string]Network.Info)
infolist := Network.GetInfoList()
for host, info := range infolist {
statelist[host] = info
}
requestlist := Network.GetRequestList()
loop:
for _, request := range requestlist {
if !InternalOrExternal(request) {
go Externalrequest(localip, Elevatorlist, request)
return externalrequest
continue loop
} else {
go Internalrequest(localip, Elevatorlist, request)
return internalrequest
continue loop
}
}
return Network.NoRequest[0]
}
// Externalrequest is designed to return the best elevator for an external request
func Externalrequest(localip string, Elevatorlist []extra.Elevator, request Network.Request) {
var statelist = make(map[string]Network.Info)
infolist := Network.GetInfoList()
for host, info := range infolist {
statelist[host] = info
}
Externalloop:
for _, elevator := range Elevatorlist {
if info, ok := statelist[elevator.Address]; ok {
if ((info.State == "UP" || info.State == "IDLE") && info.PreviousFloor <= request.Floor) || ((info.State == "DOWN" || info.State == "IDLE") && info.PreviousFloor >= request.Floor) {
if info.Ipsource == request.Ipsource {
if info.Ipsource == localip {
return request
} else {
delete(statelist, elevator.Address)
continue Externalloop
}
}
}
}
}
for _, elevator := range Elevatorlist {
if info, ok := statelist[elevator.Address]; ok {
if (info.State == "UP" && info.PreviousFloor >= request.Floor) || (info.State == "DOWN" && info.PreviousFloor <= request.Floor) {
if info.Ipsource == request.Ipsource {
if info.Ipsource == localip {
return request
} else {
delete(statelist, elevator.Address)
continue Externalloop
}
}
}
}
}
}
//This function does a BFS-search through all orders to find the most effective solution
func Nextrequest(myip string, Elevatorlist []misc.Elevator) Network.Request {
var statelist = make(map[string]Network.Info)
infolist := Network.GetInfoList()
for host, info := range infolist {
statelist[host] = info
}
requestlist := Network.GetRequestList()
insideloop:
for _, request := range requestlist {
if request.Direction != Elevator.BUTTON_COMMAND {
continue insideloop
}
for _, elevator := range Elevatorlist {
if info, ok := statelist[Elevator.Address]; ok {
if ((info.State == "UP" || info.State == "IDLE") && info.LastFloor <= request.Floor) || ((info.State == "DOWN" || info.State == "IDLE") && info.LastFloor >= request.Floor) {
if info.Source == request.Source {
if info.Source == myip {
return request
} else {
delete(statelist, Elevator.Address)
continue insideloop
}
}
}
}
}
for _, elevator := range Elevatorlist {
if info, ok := statelist[Elevator.Address]; ok {
if (info.State == "UP" && info.LastFloor >= request.Floor) || (info.State == "DOWN" && info.LastFloor <= request.Floor) {
if info.Source == request.Source {
if info.Source == myip {
return request
} else {
delete(statelist, Elevator.Address)
continue insideloop
}
}
}
}
}
}
requestloop:
for _, request := range requestlist {
if request.Direction == Elevator.BUTTON_COMMAND {
continue requestloop
}
for i := 0; i < Elevator.N_FLOORS; i++ {
for _, elevator := range Elevatorlist {
if info, ok := statelist[Elevator.Address]; ok {
if i != 0 && (info.State == "UP" && info.LastFloor+i == request.Floor) || (info.State == "DOWN" && info.LastFloor-i == request.Floor) {
if statelist[Elevator.Address].Source == myip {
return request
} else {
delete(statelist, Elevator.Address)
continue requestloop
}
}
}
}
for _, elevator := range Elevatorlist {
if info, ok := statelist[Elevator.Address]; ok {
if info.State == "IDLE" && (info.LastFloor == request.Floor+i || info.LastFloor == request.Floor-i) {
if statelist[Elevator.Address].Source == myip {
return request
} else {
delete(statelist, Elevator.Address)
continue requestloop
}
}
}
}
}
}
return Network.EmptyRequest[0]
}
