Пример #1
0
// execute an explicit task reconciliation, as per http://mesos.apache.org/documentation/latest/reconciliation/
func (k *KubernetesScheduler) explicitlyReconcileTasks(driver bindings.SchedulerDriver, taskToSlave map[string]string, cancel <-chan struct{}) error {
	log.Info("explicit reconcile tasks")

	// tell mesos to send us the latest status updates for all the non-terminal tasks that we know about
	statusList := []*mesos.TaskStatus{}
	remaining := sets.KeySet(reflect.ValueOf(taskToSlave))
	for taskId, slaveId := range taskToSlave {
		if slaveId == "" {
			delete(taskToSlave, taskId)
			continue
		}
		statusList = append(statusList, &mesos.TaskStatus{
			TaskId:  mutil.NewTaskID(taskId),
			SlaveId: mutil.NewSlaveID(slaveId),
			State:   mesos.TaskState_TASK_RUNNING.Enum(), // req'd field, doesn't have to reflect reality
		})
	}

	select {
	case <-cancel:
		return reconciliationCancelledErr
	default:
		if _, err := driver.ReconcileTasks(statusList); err != nil {
			return err
		}
	}

	start := time.Now()
	first := true
	for backoff := 1 * time.Second; first || remaining.Len() > 0; backoff = backoff * 2 {
		first = false
		// nothing to do here other than wait for status updates..
		if backoff > k.schedcfg.ExplicitReconciliationMaxBackoff.Duration {
			backoff = k.schedcfg.ExplicitReconciliationMaxBackoff.Duration
		}
		select {
		case <-cancel:
			return reconciliationCancelledErr
		case <-time.After(backoff):
			for taskId := range remaining {
				if task, _ := k.taskRegistry.Get(taskId); task != nil && explicitTaskFilter(task) && task.UpdatedTime.Before(start) {
					// keep this task in remaining list
					continue
				}
				remaining.Delete(taskId)
			}
		}
	}
	return nil
}
Пример #2
0
func newNavigationSteps(path string) (*navigationSteps, error) {
	steps := []navigationStep{}
	individualParts := strings.Split(path, ".")

	currType := reflect.TypeOf(clientcmdapi.Config{})
	currPartIndex := 0
	for currPartIndex < len(individualParts) {
		switch currType.Kind() {
		case reflect.Map:
			// if we're in a map, we need to locate a name.  That name may contain dots, so we need to know what tokens are legal for the map's value type
			// for example, we could have a set request like: `set clusters.10.10.12.56.insecure-skip-tls-verify true`.  We enter this case with
			// steps representing 10, 10, 12, 56, insecure-skip-tls-verify.  The name is "10.10.12.56", so we want to collect all those parts together and
			// store them as a single step.  In order to do that, we need to determine what set of tokens is a legal step AFTER the name of the map key
			// This set of reflective code pulls the type of the map values, uses that type to look up the set of legal tags.  Those legal tags are used to
			// walk the list of remaining parts until we find a match to a legal tag or the end of the string.  That name is used to burn all the used parts.
			mapValueType := currType.Elem().Elem()
			mapValueOptions, err := getPotentialTypeValues(mapValueType)
			if err != nil {
				return nil, err
			}
			nextPart := findNameStep(individualParts[currPartIndex:], sets.KeySet(reflect.ValueOf(mapValueOptions)))

			steps = append(steps, navigationStep{nextPart, mapValueType})
			currPartIndex += len(strings.Split(nextPart, "."))
			currType = mapValueType

		case reflect.Struct:
			nextPart := individualParts[currPartIndex]

			options, err := getPotentialTypeValues(currType)
			if err != nil {
				return nil, err
			}
			fieldType, exists := options[nextPart]
			if !exists {
				return nil, fmt.Errorf("unable to parse %v after %v at %v", path, steps, currType)
			}

			steps = append(steps, navigationStep{nextPart, fieldType})
			currPartIndex += len(strings.Split(nextPart, "."))
			currType = fieldType
		}
	}

	return &navigationSteps{steps, 0}, nil
}