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queue.go
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/
queue.go
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package main
import (
pb "blink-backend/blink"
"blink-backend/database"
"blink-backend/database/model"
)
type TaskQueue struct {
receiveRequestQueue map[string][]pb.ReceiveRequest
channelMap map[string]chan int
}
const (
Unknown = iota
Grant
Denial
)
func serialize(request pb.ReceiveRequest) string {
return "req;" + request.GetNickname() + ";" + request.GetReceiverNickname() + ";" + request.GetUuid()
}
func (q *TaskQueue) SendRequest(sender string, receiver string, uuid string) int {
db := database.GetInstance().DB
var file model.File
db.Where("uuid = ?", uuid).First(&file)
request := pb.ReceiveRequest{
Nickname: sender,
ReceiverNickname: receiver,
Filename: file.Filename,
Uuid: uuid,
}
c := make(chan int)
q.receiveRequestQueue[receiver] = append(q.receiveRequestQueue[receiver], request)
q.channelMap[serialize(request)] = c
result := <-c
return result
}
func (q *TaskQueue) ProcessGrant(request pb.ReceiveRequest) string {
db := database.GetInstance().DB
var file model.File
db.Where("uuid = ?", request.Uuid).First(&file)
if &file == nil {
return ""
}
q.channelMap[serialize(request)] <- Grant
return file.CraftFileLink()
}
func (q *TaskQueue) ProcessDenial(request pb.ReceiveRequest) {
q.channelMap[serialize(request)] <- Denial
}