package shard import ( "context" "git.frostfs.info/TrueCloudLab/frostfs-node/pkg/local_object_storage/blobstor/common" meta "git.frostfs.info/TrueCloudLab/frostfs-node/pkg/local_object_storage/metabase" "git.frostfs.info/TrueCloudLab/frostfs-observability/tracing" oid "git.frostfs.info/TrueCloudLab/frostfs-sdk-go/object/id" "go.opentelemetry.io/otel/attribute" "go.opentelemetry.io/otel/trace" ) // ExistsPrm groups the parameters of Exists operation. type ExistsPrm struct { // Exists option to set object checked for existence. Address oid.Address // Exists option to set parent object checked for existence. ParentAddress oid.Address } // ExistsRes groups the resulting values of Exists operation. type ExistsRes struct { ex bool lc bool } // Exists returns the fact that the object is in the shard. func (p ExistsRes) Exists() bool { return p.ex } // Locked returns the fact that the object is locked. func (p ExistsRes) Locked() bool { return p.lc } // 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. // Returns the object.ErrObjectIsExpired if the object is presented but already expired. // Returns the ErrShardDisabled if the shard is disabled. func (s *Shard) Exists(ctx context.Context, prm ExistsPrm) (ExistsRes, error) { ctx, span := tracing.StartSpanFromContext(ctx, "Shard.Exists", trace.WithAttributes( attribute.String("shard_id", s.ID().String()), attribute.String("address", prm.Address.EncodeToString()), )) defer span.End() var exists bool var locked bool var err error s.m.RLock() defer s.m.RUnlock() if s.info.Mode.Disabled() { return ExistsRes{}, ErrShardDisabled } else if s.info.Mode.NoMetabase() { var p common.ExistsPrm p.Address = prm.Address var res common.ExistsRes res, err = s.blobStor.Exists(ctx, p) exists = res.Exists } else { var existsPrm meta.ExistsPrm existsPrm.SetAddress(prm.Address) existsPrm.SetParent(prm.ParentAddress) var res meta.ExistsRes res, err = s.metaBase.Exists(ctx, existsPrm) exists = res.Exists() locked = res.Locked() } return ExistsRes{ ex: exists, lc: locked, }, err }