frostfs-node/pkg/local_object_storage/metabase/v2/small.go
Alex Vanin e478c0d024 [#199] Refactor metabase internal structure
Accoring to MetaBase-Plan-B storage engine specification.

Signed-off-by: Alex Vanin <alexey@nspcc.ru>
2020-12-11 17:19:37 +03:00

28 lines
889 B
Go

package meta
import (
objectSDK "github.com/nspcc-dev/neofs-api-go/pkg/object"
"github.com/nspcc-dev/neofs-node/pkg/local_object_storage/blobovnicza"
"go.etcd.io/bbolt"
)
// IsSmall returns blobovniczaID for small objects and nil for big objects.
// Small objects stored in blobovnicza instances. Big objects stored in FS by
// shallow path which is calculated from address and therefore it is not
// indexed in metabase.
func (db *DB) IsSmall(addr *objectSDK.Address) (id *blobovnicza.ID, err error) {
err = db.boltDB.View(func(tx *bbolt.Tx) error {
// if graveyard is empty, then check if object exists in primary bucket
smallBucket := tx.Bucket(smallBucketName(addr.ContainerID()))
if smallBucket == nil {
return nil
}
blobovniczaID := smallBucket.Get(objectKey(addr.ObjectID()))
id = blobovnicza.NewIDFromBytes(blobovniczaID)
return err
})
return id, err
}