1/* 2Copyright 2017 The Kubernetes Authors. 3 4Licensed under the Apache License, Version 2.0 (the "License"); 5you may not use this file except in compliance with the License. 6You may obtain a copy of the License at 7 8 http://www.apache.org/licenses/LICENSE-2.0 9 10Unless required by applicable law or agreed to in writing, software 11distributed under the License is distributed on an "AS IS" BASIS, 12WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13See the License for the specific language governing permissions and 14limitations under the License. 15*/ 16 17package v1 18 19import ( 20 "k8s.io/apimachinery/pkg/runtime/schema" 21) 22 23// IsControlledBy checks if the object has a controllerRef set to the given owner 24func IsControlledBy(obj Object, owner Object) bool { 25 ref := GetControllerOf(obj) 26 if ref == nil { 27 return false 28 } 29 return ref.UID == owner.GetUID() 30} 31 32// GetControllerOf returns a pointer to a copy of the controllerRef if controllee has a controller 33func GetControllerOf(controllee Object) *OwnerReference { 34 for _, ref := range controllee.GetOwnerReferences() { 35 if ref.Controller != nil && *ref.Controller { 36 return &ref 37 } 38 } 39 return nil 40} 41 42// NewControllerRef creates an OwnerReference pointing to the given owner. 43func NewControllerRef(owner Object, gvk schema.GroupVersionKind) *OwnerReference { 44 blockOwnerDeletion := true 45 isController := true 46 return &OwnerReference{ 47 APIVersion: gvk.GroupVersion().String(), 48 Kind: gvk.Kind, 49 Name: owner.GetName(), 50 UID: owner.GetUID(), 51 BlockOwnerDeletion: &blockOwnerDeletion, 52 Controller: &isController, 53 } 54} 55