mirror of https://github.com/prometheus/prometheus
55 lines
1.5 KiB
Go
55 lines
1.5 KiB
Go
/*
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Copyright 2014 The Kubernetes Authors.
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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 cache
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import (
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"k8s.io/apimachinery/pkg/util/clock"
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"k8s.io/apimachinery/pkg/util/sets"
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)
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type fakeThreadSafeMap struct {
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ThreadSafeStore
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deletedKeys chan<- string
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}
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func (c *fakeThreadSafeMap) Delete(key string) {
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if c.deletedKeys != nil {
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c.ThreadSafeStore.Delete(key)
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c.deletedKeys <- key
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}
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}
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type FakeExpirationPolicy struct {
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NeverExpire sets.String
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RetrieveKeyFunc KeyFunc
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}
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func (p *FakeExpirationPolicy) IsExpired(obj *timestampedEntry) bool {
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key, _ := p.RetrieveKeyFunc(obj)
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return !p.NeverExpire.Has(key)
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}
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func NewFakeExpirationStore(keyFunc KeyFunc, deletedKeys chan<- string, expirationPolicy ExpirationPolicy, cacheClock clock.Clock) Store {
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cacheStorage := NewThreadSafeStore(Indexers{}, Indices{})
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return &ExpirationCache{
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cacheStorage: &fakeThreadSafeMap{cacheStorage, deletedKeys},
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keyFunc: keyFunc,
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clock: cacheClock,
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expirationPolicy: expirationPolicy,
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}
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}
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