forked from TrueCloudLab/frostfs-s3-gw
57 lines
1.3 KiB
Go
57 lines
1.3 KiB
Go
package cache
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import (
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"time"
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"github.com/bluele/gcache"
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"github.com/nspcc-dev/neofs-api-go/pkg/object"
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)
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// ObjectsNameCache provides interface for lru cache for objects.
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// This cache contains mapping nice name to object addresses.
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// Key is bucketName+objectName.
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type ObjectsNameCache interface {
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Get(key string) *object.Address
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Put(key string, address *object.Address) error
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Delete(key string) bool
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}
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type (
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// NameCache contains cache with objects and lifetime of cache entries.
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NameCache struct {
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cache gcache.Cache
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lifetime time.Duration
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}
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)
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// NewObjectsNameCache creates an object of ObjectsNameCache.
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func NewObjectsNameCache(cacheSize int, lifetime time.Duration) *NameCache {
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gc := gcache.New(cacheSize).LRU().Build()
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return &NameCache{cache: gc, lifetime: lifetime}
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}
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// Get returns cached object.
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func (o *NameCache) Get(key string) *object.Address {
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entry, err := o.cache.Get(key)
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if err != nil {
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return nil
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}
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result, ok := entry.(*object.Address)
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if !ok {
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return nil
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}
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return result
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}
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// Put puts an object to cache.
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func (o *NameCache) Put(key string, address *object.Address) error {
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return o.cache.SetWithExpire(key, address, o.lifetime)
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}
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// Delete deletes an object from cache.
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func (o *NameCache) Delete(key string) bool {
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return o.cache.Remove(key)
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}
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