package cache import ( "time" "github.com/bluele/gcache" "github.com/nspcc-dev/neofs-sdk-go/object" ) // ObjectsNameCache provides for lru cache for objects. // This cache contains mapping nice name to object addresses. // Key is bucketName+objectName. type ObjectsNameCache struct { cache gcache.Cache } const ( // DefaultObjectsNameCacheSize is a default maximum number of entries in cache. DefaultObjectsNameCacheSize = 1e4 // DefaultObjectsNameCacheLifetime is a default lifetime of entries in cache. DefaultObjectsNameCacheLifetime = time.Minute ) // DefaultObjectsNameConfig return new default cache expiration values. func DefaultObjectsNameConfig() *Config { return &Config{Size: DefaultObjectsNameCacheSize, Lifetime: DefaultObjectsNameCacheLifetime} } // NewObjectsNameCache creates an object of ObjectsNameCache. func NewObjectsNameCache(config *Config) *ObjectsNameCache { gc := gcache.New(config.Size).LRU().Expiration(config.Lifetime).Build() return &ObjectsNameCache{cache: gc} } // Get returns cached object. func (o *ObjectsNameCache) Get(key string) *object.Address { entry, err := o.cache.Get(key) if err != nil { return nil } result, ok := entry.(*object.Address) if !ok { return nil } return result } // Put puts an object to cache. func (o *ObjectsNameCache) Put(key string, address *object.Address) error { return o.cache.Set(key, address) } // Delete deletes an object from cache. func (o *ObjectsNameCache) Delete(key string) bool { return o.cache.Remove(key) }