75 lines
1.5 KiB
Go
75 lines
1.5 KiB
Go
// Copyright 2020 the Pinniped contributors. All Rights Reserved.
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// SPDX-License-Identifier: Apache-2.0
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package controllerlib
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import (
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metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
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"k8s.io/apimachinery/pkg/util/sets"
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)
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type Filter interface {
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Add(obj metav1.Object) bool
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Update(oldObj, newObj metav1.Object) bool
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Delete(obj metav1.Object) bool
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Parent(obj metav1.Object) Key
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}
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var _ Filter = FilterFuncs{}
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type ParentFunc func(obj metav1.Object) Key
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type FilterFuncs struct {
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ParentFunc ParentFunc
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AddFunc func(obj metav1.Object) bool
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UpdateFunc func(oldObj, newObj metav1.Object) bool
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DeleteFunc func(obj metav1.Object) bool
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}
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func (f FilterFuncs) Parent(obj metav1.Object) Key {
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if f.ParentFunc == nil {
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return Key{
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Namespace: obj.GetNamespace(),
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Name: obj.GetName(),
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}
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}
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return f.ParentFunc(obj)
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}
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func (f FilterFuncs) Add(obj metav1.Object) bool {
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if f.AddFunc == nil {
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return false
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}
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return f.AddFunc(obj)
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}
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func (f FilterFuncs) Update(oldObj, newObj metav1.Object) bool {
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if f.UpdateFunc == nil {
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return false
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}
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return f.UpdateFunc(oldObj, newObj)
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}
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func (f FilterFuncs) Delete(obj metav1.Object) bool {
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if f.DeleteFunc == nil {
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return false
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}
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return f.DeleteFunc(obj)
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}
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func FilterByNames(parentFunc ParentFunc, names ...string) Filter {
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set := sets.NewString(names...)
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has := func(obj metav1.Object) bool {
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return set.Has(obj.GetName())
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}
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return FilterFuncs{
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ParentFunc: parentFunc,
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AddFunc: has,
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UpdateFunc: func(oldObj, newObj metav1.Object) bool {
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return has(newObj)
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},
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DeleteFunc: has,
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}
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}
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