Ejemplo n.º 1
0
func recvJob(j Job) {
	log.Printf("received %v", j)
	if j.ID == "" {
		j.ID = <-ustrs

		//watch over projects that we give IDs to
		log.Printf("watching %v", j)
		go watchOver(j)
	}
	//p := GetProject(j.Project)
	jobClaims.claimJob(j.JobHeader)
	ja := messages.JobAck{j.JobHeader}
	if line, ok := getLine(j.Conn); ok {
		line.Out <- ja.Message()
	}

	if false {
		// old and busted
		purgatory.AddJob(j)
	} else {
		// new hotness
		go prepareJobForQueue(j)
	}
}
Ejemplo n.º 2
0
// this function ensures that the job has the right worker before queuing it
func prepareJobForQueue(j Job) {

	jobClaims.claimJob(j.JobHeader)
	ja := messages.JobAck{j.JobHeader}
	if line, ok := getLine(j.Conn); ok {
		line.Out <- ja.Message()
	}

	pr := GetProject(j.Project)

	// first, ensure that we've got the worker
	alreadyRequested := false
waitforworker:
	for {
		w, ok := pr.GetWorker(j.Name)
		if ok && j.Version <= w.Version {
			// we've already got the right worker
			break
		}
		workerChan := make(chan Worker)
		workerSub := func(msg messages.Message, line messages.Line) (keepgoing bool) {
			if string(msg.Payload["type"]) != messages.WorkerType {
				return true
			}

			worker, err := messages.WorkerFromMessage(msg)
			if err != nil {
				return true
			}

			if worker.Project != j.Project || worker.Name != j.Name {
				return true
			}

			if worker.Version < j.Version {
				return true
			}

			// this is our worker
			w := Worker{worker, line.Conn}
			pr.AddWorker(w)
			workerChan <- w
			// stop this subscription
			return false
		}

		if !alreadyRequested {
			alreadyRequested = true
			log.Printf("requesting worker for %v", j)
			wr := messages.WorkerRequest{
				Project: j.Project,
				Name:    j.Name,
				Version: j.Version,
			}
			line, ok := getLine(j.Conn)
			if !ok {
				log.Printf("job came from lost source")
			}
			line.Out <- wr.Message()
		}

		go subscribe(workerSub)
		timeout := time.NewTimer(2e9)
		select {
		case w = <-workerChan:
			break waitforworker
		case <-timeout.C:
			/*
				this timeout is here because we might have received the worker between the first
				check and when the subscription went active
			*/
		}
		timeout.Stop()
	}
	log.Printf("enqueuing %v", j)

	jobQueue.Push <- j
}