frostfs-node/pkg/local_object_storage/metabase/storage_id.go

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package meta
import (
"github.com/nspcc-dev/neo-go/pkg/util/slice"
oid "github.com/nspcc-dev/neofs-sdk-go/object/id"
"go.etcd.io/bbolt"
)
// StorageIDPrm groups the parameters of StorageID operation.
type StorageIDPrm struct {
addr oid.Address
}
// StorageIDRes groups the resulting values of StorageID operation.
type StorageIDRes struct {
id []byte
}
// SetAddress is a StorageID option to set the object address to check.
func (p *StorageIDPrm) SetAddress(addr oid.Address) {
p.addr = addr
}
// StorageID returns storage ID.
func (r StorageIDRes) StorageID() []byte {
return r.id
}
// StorageID returns storage descriptor for objects from the blobstor.
// It is put together with the object can makes get/delete operation faster.
func (db *DB) StorageID(prm StorageIDPrm) (res StorageIDRes, err error) {
err = db.boltDB.View(func(tx *bbolt.Tx) error {
res.id, err = db.storageID(tx, prm.addr)
return err
})
return
}
func (db *DB) storageID(tx *bbolt.Tx, addr oid.Address) ([]byte, error) {
key := make([]byte, bucketKeySize)
smallBucket := tx.Bucket(smallBucketName(addr.Container(), key))
if smallBucket == nil {
return nil, nil
}
storageID := smallBucket.Get(objectKey(addr.Object(), key))
if storageID == nil {
return nil, nil
}
return slice.Copy(storageID), nil
}