Golang T.Spec Examples

Example #1

File: algorithm.go Project: johndmulhausen/kubernetes

// doSchedule implements the actual scheduling of the given pod task.
// It checks whether the offer has been accepted and is still present in the offer registry.
// It delegates to the actual pod scheduler and updates the task registry.
func (k *schedulerAlgorithm) doSchedule(task *podtask.T) (string, error) {
	var offer offers.Perishable
	var err error

	if task.HasAcceptedOffer() {
		// verify that the offer is still on the table
		var ok bool
		offer, ok = k.sched.Offers().Get(task.GetOfferId())

		if !ok || offer.HasExpired() {
			task.Offer.Release()
			task.Reset()
			if err = k.sched.Tasks().Update(task); err != nil {
				return "", err
			}
		}
	}

	var spec *podtask.Spec
	if offer == nil {
		offer, spec, err = k.podScheduler.SchedulePod(k.sched.Offers(), task)
	}

	if err != nil {
		return "", err
	}

	details := offer.Details()
	if details == nil {
		return "", fmt.Errorf("offer already invalid/expired for task %v", task.ID)
	}

	if task.Offer != nil && task.Offer != offer {
		return "", fmt.Errorf("task.offer assignment must be idempotent, task %+v: offer %+v", task, offer)
	}

	task.Offer = offer
	task.Spec = spec

	if err := k.sched.Tasks().Update(task); err != nil {
		offer.Release()
		return "", err
	}

	return details.GetHostname(), nil
}