55 lines
2.1 KiB
Go
55 lines
2.1 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 controller
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import (
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metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
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"go.pinniped.dev/internal/controllerlib"
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)
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func NameAndNamespaceExactMatchFilterFactory(name, namespace string) controllerlib.Filter {
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return SimpleFilter(func(obj metav1.Object) bool {
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return obj.GetName() == name && obj.GetNamespace() == namespace
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// nil parent func is fine because we only match a key with the given name and namespace
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// i.e. it is equivalent to having a SingletonQueue() parent func
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}, nil)
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}
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// MatchAnythingFilter returns a controllerlib.Filter that allows all objects.
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func MatchAnythingFilter(parentFunc controllerlib.ParentFunc) controllerlib.Filter {
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return SimpleFilter(func(object metav1.Object) bool { return true }, parentFunc)
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}
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// SimpleFilter takes a single boolean match function on a metav1.Object and wraps it into a proper controllerlib.Filter.
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func SimpleFilter(match func(metav1.Object) bool, parentFunc controllerlib.ParentFunc) controllerlib.Filter {
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return controllerlib.FilterFuncs{
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AddFunc: match,
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UpdateFunc: func(oldObj, newObj metav1.Object) bool { return match(oldObj) || match(newObj) },
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DeleteFunc: match,
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ParentFunc: parentFunc,
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}
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}
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// SingletonQueue returns a parent func that treats all events as the same key.
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func SingletonQueue() controllerlib.ParentFunc {
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return func(_ metav1.Object) controllerlib.Key {
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return controllerlib.Key{}
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}
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}
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// SimpleFilterWithSingletonQueue returns a Filter based on the given match function that treats all events as the same key.
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func SimpleFilterWithSingletonQueue(match func(metav1.Object) bool) controllerlib.Filter {
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return SimpleFilter(match, SingletonQueue())
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}
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// Same signature as controllerlib.WithInformer().
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type WithInformerOptionFunc func(
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getter controllerlib.InformerGetter,
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filter controllerlib.Filter,
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opt controllerlib.InformerOption) controllerlib.Option
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// Same signature as controllerlib.WithInitialEvent().
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type WithInitialEventOptionFunc func(key controllerlib.Key) controllerlib.Option
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