package shard import ( "github.com/nspcc-dev/neofs-node/pkg/local_object_storage/blobstor" meta "github.com/nspcc-dev/neofs-node/pkg/local_object_storage/metabase" oid "github.com/nspcc-dev/neofs-sdk-go/object/id" "go.uber.org/zap" ) // ExistsPrm groups the parameters of Exists operation. type ExistsPrm struct { addr oid.Address } // ExistsRes groups the resulting values of Exists operation. type ExistsRes struct { ex bool } // WithAddress is an Exists option to set object checked for existence. func (p *ExistsPrm) WithAddress(addr oid.Address) *ExistsPrm { if p != nil { p.addr = addr } return p } // Exists returns the fact that the object is in the shard. func (p ExistsRes) Exists() bool { return p.ex } // Exists checks if object is presented in shard. // // Returns any error encountered that does not allow to // unambiguously determine the presence of an object. // // Returns an error of type apistatus.ObjectAlreadyRemoved if object has been marked as removed. func (s *Shard) Exists(prm ExistsPrm) (ExistsRes, error) { var existsPrm meta.ExistsPrm existsPrm.SetAddress(prm.addr) res, err := s.metaBase.Exists(existsPrm) exists := res.Exists() if err != nil { // If the shard is in degraded mode, try to consult blobstor directly. // Otherwise, just return an error. if s.GetMode() == ModeDegraded { var p blobstor.ExistsPrm p.SetAddress(prm.addr) res, bErr := s.blobStor.Exists(p) if bErr == nil { exists = res.Exists() s.log.Warn("metabase existence check finished with error", zap.Stringer("address", prm.addr), zap.String("error", err.Error())) err = nil } } } return ExistsRes{ ex: exists, }, err }