frostfs-s3-gw/api/cache/accessbox.go

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