112 lines
2.6 KiB
Go
112 lines
2.6 KiB
Go
/*
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Copyright 2021 Alibaba Group Holding Limited.
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Licensed under the Apache License, Version 2.0 (the "License");
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you may not use this file except in compliance with the License.
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You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License.
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*/
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package common
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import (
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"reflect"
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"sigs.k8s.io/controller-runtime/pkg/client"
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)
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func iterateOverObjects(objList interface{}, f func(obj client.Object) bool) {
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if objList == nil {
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return
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}
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v := reflect.ValueOf(objList)
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if v.Kind() != reflect.Slice {
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panic("invalid object list")
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}
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for i := 0; i < v.Len(); i++ {
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// Always get the pointer.
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vi := v.Index(i)
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var vo client.Object
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if vi.Kind() == reflect.Ptr {
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vo = vi.Interface().(client.Object)
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} else {
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vo = vi.Addr().Interface().(client.Object)
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}
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if f(vo) {
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return
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}
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}
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}
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func GetObjectFromObjectList(objList interface{}, name string) client.Object {
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var r client.Object
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iterateOverObjects(objList, func(obj client.Object) bool {
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if obj.GetName() == name {
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r = obj
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return true
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}
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return false
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})
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return r
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}
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func mapContains(m, t map[string]string) bool {
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if m == nil || len(m) == 0 {
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return t == nil || len(t) == 0
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}
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for k, v := range t {
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mv, ok := m[k]
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if !ok || mv != v {
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return false
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}
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}
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return true
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}
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func MapObjectsFromObjectListByLabel(objList interface{}, label string) map[string][]client.Object {
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r := make(map[string][]client.Object)
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iterateOverObjects(objList, func(vo client.Object) bool {
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lv := vo.GetLabels()[label]
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if _, ok := r[lv]; !ok {
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r[lv] = []client.Object{vo}
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} else {
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r[lv] = append(r[lv], vo)
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}
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return false
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})
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return r
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}
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func GetObjectList(objList interface{}) []client.Object {
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return GetObjectsFromObjectListByLabels(objList, nil)
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}
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func GetObjectsFromObjectListByLabels(objList interface{}, labels map[string]string) []client.Object {
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r := make([]client.Object, 0)
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iterateOverObjects(objList, func(vo client.Object) bool {
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if mapContains(vo.GetLabels(), labels) {
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r = append(r, vo)
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}
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return false
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})
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return r
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}
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func GetObjectMapFromObjectListByName(objList interface{}) map[string]client.Object {
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r := make(map[string]client.Object)
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iterateOverObjects(objList, func(obj client.Object) bool {
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r[obj.GetName()] = obj
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return false
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})
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return r
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}
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