c253235152
This updates the k8s.io/util to pull in the fix for https://github.com/kubernetes/kubernetes/issues/104452. Commands run: ./hack/pin-dependency.sh k8s.io/utils v0.0.0-20210819203725-bdf08cb9a70a ./hack/update-vendor.sh
80 lines
1.8 KiB
Go
80 lines
1.8 KiB
Go
/*
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Copyright 2021 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 lru
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import (
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"sync"
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groupcache "k8s.io/utils/internal/third_party/forked/golang/golang-lru"
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)
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type Key = groupcache.Key
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// Cache is a thread-safe fixed size LRU cache.
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type Cache struct {
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cache *groupcache.Cache
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lock sync.RWMutex
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}
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// New creates an LRU of the given size.
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func New(size int) *Cache {
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return &Cache{
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cache: groupcache.New(size),
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}
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}
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// Add adds a value to the cache.
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func (c *Cache) Add(key Key, value interface{}) {
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c.lock.Lock()
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defer c.lock.Unlock()
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c.cache.Add(key, value)
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}
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// Get looks up a key's value from the cache.
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func (c *Cache) Get(key Key) (value interface{}, ok bool) {
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c.lock.Lock()
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defer c.lock.Unlock()
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return c.cache.Get(key)
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}
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// Remove removes the provided key from the cache.
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func (c *Cache) Remove(key Key) {
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c.lock.Lock()
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defer c.lock.Unlock()
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c.cache.Remove(key)
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}
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// RemoveOldest removes the oldest item from the cache.
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func (c *Cache) RemoveOldest() {
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c.lock.Lock()
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defer c.lock.Unlock()
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c.cache.RemoveOldest()
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}
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// Len returns the number of items in the cache.
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func (c *Cache) Len() int {
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c.lock.RLock()
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defer c.lock.RUnlock()
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return c.cache.Len()
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}
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// Clear purges all stored items from the cache.
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func (c *Cache) Clear() {
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c.lock.Lock()
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defer c.lock.Unlock()
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c.cache.Clear()
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}
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