71 lines
1.8 KiB
Go
71 lines
1.8 KiB
Go
package cache
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import (
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"fmt"
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"time"
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"github.com/bluele/gcache"
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"github.com/nspcc-dev/neofs-s3-gw/creds/accessbox"
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oid "github.com/nspcc-dev/neofs-sdk-go/object/id"
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"go.uber.org/zap"
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)
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type (
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// AccessBoxCache stores an access box by its address.
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AccessBoxCache struct {
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logger *zap.Logger
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cache gcache.Cache
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}
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// Config stores expiration params for cache.
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Config struct {
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Size int
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Lifetime time.Duration
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Logger *zap.Logger
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}
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)
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const (
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// DefaultAccessBoxCacheSize is a default maximum number of entries in cache.
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DefaultAccessBoxCacheSize = 100
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// DefaultAccessBoxCacheLifetime is a default lifetime of entries in cache.
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DefaultAccessBoxCacheLifetime = 10 * time.Minute
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)
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// DefaultAccessBoxConfig returns new default cache expiration values.
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func DefaultAccessBoxConfig(logger *zap.Logger) *Config {
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return &Config{
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Size: DefaultAccessBoxCacheSize,
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Lifetime: DefaultAccessBoxCacheLifetime,
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Logger: logger,
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}
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}
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// NewAccessBoxCache creates an object of BucketCache.
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func NewAccessBoxCache(config *Config) *AccessBoxCache {
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gc := gcache.New(config.Size).LRU().Expiration(config.Lifetime).Build()
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return &AccessBoxCache{cache: gc, logger: config.Logger}
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}
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// Get returns a cached object.
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func (o *AccessBoxCache) Get(address oid.Address) *accessbox.Box {
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entry, err := o.cache.Get(address.EncodeToString())
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if err != nil {
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return nil
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}
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result, ok := entry.(*accessbox.Box)
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if !ok {
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o.logger.Warn("invalid cache entry type", zap.String("actual", fmt.Sprintf("%T", entry)),
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zap.String("expected", fmt.Sprintf("%T", result)))
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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 stores an object to cache.
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func (o *AccessBoxCache) Put(address oid.Address, box *accessbox.Box) error {
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return o.cache.Set(address.EncodeToString(), box)
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}
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