// getOverlappingControllers finds rcs that this controller overlaps, as well as rcs overlapping this controller. func getOverlappingControllers(rcClient coreclient.ReplicationControllerInterface, rc *api.ReplicationController) ([]api.ReplicationController, error) { rcs, err := rcClient.List(api.ListOptions{}) 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 }