func LoadExistingNextReplicationController(c client.ReplicationControllersNamespacer, namespace, newName string) (*api.ReplicationController, error) {
if len(newName) == 0 {
return nil, nil
}
newRc, err := c.ReplicationControllers(namespace).Get(newName)
if err != nil && errors.IsNotFound(err) {
return nil, nil
}
return newRc, err
}
func FindSourceController(r client.ReplicationControllersNamespacer, namespace, name string) (*api.ReplicationController, error) {
list, err := r.ReplicationControllers(namespace).List(labels.Everything(), fields.Everything())
if err != nil {
return nil, err
}
for ix := range list.Items {
rc := &list.Items[ix]
if rc.Annotations != nil && strings.HasPrefix(rc.Annotations[sourceIdAnnotation], name) {
return rc, nil
}
}
return nil, fmt.Errorf("couldn't find a replication controller with source id == %s/%s", namespace, name)
}
func Rename(c client.ReplicationControllersNamespacer, rc *api.ReplicationController, newName string) error {
oldName := rc.Name
rc.Name = newName
rc.ResourceVersion = ""
_, err := c.ReplicationControllers(rc.Namespace).Create(rc)
if err != nil {
return err
}
err = c.ReplicationControllers(rc.Namespace).Delete(oldName)
if err != nil && !errors.IsNotFound(err) {
return err
}
return nil
}