package shard import ( "github.com/mr-tron/base58" "go.uber.org/zap" ) // ID represents Shard identifier. // // Each shard should have the unique ID within // a single instance of local storage. type ID []byte // NewIDFromBytes constructs ID from byte slice. func NewIDFromBytes(v []byte) *ID { return (*ID)(&v) } func (id ID) String() string { return base58.Encode(id) } // ID returns Shard identifier. func (s *Shard) ID() *ID { return s.info.ID } // UpdateID reads shard ID saved in the metabase and updates it if it is missing. func (s *Shard) UpdateID() (err error) { if err = s.metaBase.Open(false); err != nil { return err } defer func() { cErr := s.metaBase.Close() if err == nil { err = cErr } }() id, err := s.metaBase.ReadShardID() if err != nil { return err } if len(id) != 0 { s.info.ID = NewIDFromBytes(id) } s.log = s.log.With(zap.String("shard_id", s.info.ID.String())) s.metaBase.SetLogger(s.log) s.blobStor.SetLogger(s.log) if s.hasWriteCache() { s.writeCache.SetLogger(s.log) } if len(id) != 0 { return nil } return s.metaBase.WriteShardID(*s.info.ID) }