// MetaNamespaceKeyFunc is a convenient default KeyFunc which knows how to make
// keys for API objects which implement meta.Interface.
// The key uses the format <namespace>/<name> unless <namespace> is empty, then
// it's just <name>.
//
// TODO: replace key-as-string with a key-as-struct so that this
// packing/unpacking won't be necessary.
func MetaNamespaceKeyFunc(obj interface{}) (string, error) {
if key, ok := obj.(ExplicitKey); ok {
return string(key), nil
}
meta, err := meta.Accessor(obj)
if err != nil {
return "", fmt.Errorf("object has no meta: %v", err)
}
if len(meta.GetNamespace()) > 0 {
return meta.GetNamespace() + "/" + meta.GetName(), nil
}
return meta.GetName(), nil
}
// MetaNamespaceIndexFunc is a default index function that indexes based on an object's namespace
func MetaNamespaceIndexFunc(obj interface{}) ([]string, error) {
meta, err := meta.Accessor(obj)
if err != nil {
return []string{""}, fmt.Errorf("object has no meta: %v", err)
}
return []string{meta.GetNamespace()}, nil
}
func NamespaceKeyFunc(prefix string, obj runtime.Object) (string, error) {
meta, err := meta.Accessor(obj)
if err != nil {
return "", err
}
name := meta.GetName()
if msgs := path.IsValidPathSegmentName(name); len(msgs) != 0 {
return "", fmt.Errorf("invalid name: %v", msgs)
}
return prefix + "/" + meta.GetNamespace() + "/" + name, nil
}