示例#1
0
文件: stop.go 项目: tobad357/contrib
// getOverlappingControllers finds rcs that this controller overlaps, as well as rcs overlapping this controller.
func getOverlappingControllers(c client.ReplicationControllerInterface, rc *api.ReplicationController) ([]api.ReplicationController, error) {
	rcs, err := c.List(labels.Everything())
	if err != nil {
		return nil, fmt.Errorf("error getting replication controllers: %v", err)
	}
	var matchingRCs []api.ReplicationController
	rcLabels := labels.Set(rc.Spec.Selector)
	for _, controller := range rcs.Items {
		newRCLabels := labels.Set(controller.Spec.Selector)
		if labels.SelectorFromSet(newRCLabels).Matches(rcLabels) || labels.SelectorFromSet(rcLabels).Matches(newRCLabels) {
			matchingRCs = append(matchingRCs, controller)
		}
	}
	return matchingRCs, nil
}
示例#2
0
// Get all replication controllers whose selectors would match a given set of
// labels.
// TODO Move this to pkg/client and ideally implement it server-side (instead
// of getting all RC's and searching through them manually).
func getReplicationControllersForLabels(c client.ReplicationControllerInterface, labelsToMatch labels.Labels) ([]api.ReplicationController, error) {
	// Get all replication controllers.
	// TODO this needs a namespace scope as argument
	rcs, err := c.List(labels.Everything())
	if err != nil {
		return nil, fmt.Errorf("error getting replication controllers: %v", err)
	}

	// Find the ones that match labelsToMatch.
	var matchingRCs []api.ReplicationController
	for _, controller := range rcs.Items {
		selector := labels.SelectorFromSet(controller.Spec.Selector)
		if selector.Matches(labelsToMatch) {
			matchingRCs = append(matchingRCs, controller)
		}
	}
	return matchingRCs, nil
}
示例#3
0
// WaitForADeployment waits for a Deployment to fulfill the isOK function
func WaitForADeployment(client kclient.ReplicationControllerInterface,
	name string,
	isOK, isFailed func(*kapi.ReplicationController) bool) error {
	for {
		requirement, err := labels.NewRequirement(deployapi.DeploymentConfigAnnotation, labels.EqualsOperator, kutil.NewStringSet(name))
		if err != nil {
			return fmt.Errorf("unexpected error generating label selector: %v", err)
		}

		list, err := client.List(labels.LabelSelector{*requirement})
		if err != nil {
			return err
		}
		for i := range list.Items {
			if isOK(&list.Items[i]) {
				return nil
			}
			if isFailed(&list.Items[i]) {
				return fmt.Errorf("The deployment %q status is %q",
					name, list.Items[i].Annotations[deployapi.DeploymentStatusAnnotation])
			}
		}

		rv := list.ResourceVersion
		w, err := client.Watch(labels.LabelSelector{*requirement}, fields.Everything(), rv)
		if err != nil {
			return err
		}
		defer w.Stop()

		for {
			val, ok := <-w.ResultChan()
			if !ok {
				// reget and re-watch
				break
			}
			if e, ok := val.Object.(*kapi.ReplicationController); ok {
				if isOK(e) {
					return nil
				}
				if isFailed(e) {
					return fmt.Errorf("The deployment %q status is %q",
						name, e.Annotations[deployapi.DeploymentStatusAnnotation])
				}
			}
		}
	}
}