ContainerImage.Pinniped/internal/controller/utils.go

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// Copyright 2020 the Pinniped contributors. All Rights Reserved.
// SPDX-License-Identifier: Apache-2.0
package controller
import (
v1 "k8s.io/api/core/v1"
metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
"go.pinniped.dev/internal/controllerlib"
)
func NameAndNamespaceExactMatchFilterFactory(name, namespace string) controllerlib.Filter {
return SimpleFilter(func(obj metav1.Object) bool {
return obj.GetName() == name && obj.GetNamespace() == namespace
// nil parent func is fine because we only match a key with the given name and namespace
// i.e. it is equivalent to having a SingletonQueue() parent func
}, nil)
}
// MatchAnythingFilter returns a controllerlib.Filter that allows all objects.
func MatchAnythingFilter(parentFunc controllerlib.ParentFunc) controllerlib.Filter {
return SimpleFilter(func(object metav1.Object) bool { return true }, parentFunc)
}
// SimpleFilter takes a single boolean match function on a metav1.Object and wraps it into a proper controllerlib.Filter.
func SimpleFilter(match func(metav1.Object) bool, parentFunc controllerlib.ParentFunc) controllerlib.Filter {
return controllerlib.FilterFuncs{
AddFunc: match,
UpdateFunc: func(oldObj, newObj metav1.Object) bool { return match(oldObj) || match(newObj) },
DeleteFunc: match,
ParentFunc: parentFunc,
}
}
func MatchAnySecretOfTypeFilter(secretType v1.SecretType, parentFunc controllerlib.ParentFunc) controllerlib.Filter {
isSecretOfType := func(obj metav1.Object) bool {
secret, ok := obj.(*v1.Secret)
if !ok {
return false
}
return secret.Type == secretType
}
return SimpleFilter(isSecretOfType, parentFunc)
}
func SecretIsControlledByParentFunc(matchFunc func(obj metav1.Object) bool) func(obj metav1.Object) controllerlib.Key {
return func(obj metav1.Object) controllerlib.Key {
if matchFunc(obj) {
controller := metav1.GetControllerOf(obj)
return controllerlib.Key{
Name: controller.Name,
Namespace: obj.GetNamespace(),
}
}
return controllerlib.Key{}
}
}
// SingletonQueue returns a parent func that treats all events as the same key.
func SingletonQueue() controllerlib.ParentFunc {
return func(_ metav1.Object) controllerlib.Key {
return controllerlib.Key{}
}
}
// SimpleFilterWithSingletonQueue returns a Filter based on the given match function that treats all events as the same key.
func SimpleFilterWithSingletonQueue(match func(metav1.Object) bool) controllerlib.Filter {
return SimpleFilter(match, SingletonQueue())
}
// Same signature as controllerlib.WithInformer().
type WithInformerOptionFunc func(
getter controllerlib.InformerGetter,
filter controllerlib.Filter,
opt controllerlib.InformerOption) controllerlib.Option
// Same signature as controllerlib.WithInitialEvent().
type WithInitialEventOptionFunc func(key controllerlib.Key) controllerlib.Option