kubernetes expiration_cache_fakes 源码
kubernetes expiration_cache_fakes 代码
文件路径：/staging/src/k8s.io/client-go/tools/cache/expiration_cache_fakes.go
/*
Copyright 2014 The Kubernetes Authors.
Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at
http://www.apache.org/licenses/LICENSE-2.0
Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.
*/
package cache
import (
"k8s.io/apimachinery/pkg/util/sets"
"k8s.io/utils/clock"
)
type fakeThreadSafeMap struct {
ThreadSafeStore
deletedKeys chan<- string
}
func (c *fakeThreadSafeMap) Delete(key string) {
if c.deletedKeys != nil {
c.ThreadSafeStore.Delete(key)
c.deletedKeys <- key
}
}
// FakeExpirationPolicy keeps the list for keys which never expires.
type FakeExpirationPolicy struct {
NeverExpire sets.String
RetrieveKeyFunc KeyFunc
}
// IsExpired used to check if object is expired.
func (p *FakeExpirationPolicy) IsExpired(obj *TimestampedEntry) bool {
key, _ := p.RetrieveKeyFunc(obj)
return !p.NeverExpire.Has(key)
}
// NewFakeExpirationStore creates a new instance for the ExpirationCache.
func NewFakeExpirationStore(keyFunc KeyFunc, deletedKeys chan<- string, expirationPolicy ExpirationPolicy, cacheClock clock.Clock) Store {
cacheStorage := NewThreadSafeStore(Indexers{}, Indices{})
return &ExpirationCache{
cacheStorage: &fakeThreadSafeMap{cacheStorage, deletedKeys},
keyFunc: keyFunc,
clock: cacheClock,
expirationPolicy: expirationPolicy,
}
}
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