// 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
}
