package layer import ( "context" "encoding/xml" "github.com/nspcc-dev/neofs-s3-gw/api/data" "github.com/nspcc-dev/neofs-s3-gw/api/errors" "github.com/nspcc-dev/neofs-sdk-go/object" "github.com/nspcc-dev/neofs-sdk-go/object/address" "go.uber.org/zap" ) func (n *layer) putSystemObject(ctx context.Context, p *PutSystemObjectParams) (*data.ObjectInfo, error) { objInfo, err := n.putSystemObjectIntoNeoFS(ctx, p) if err != nil { return nil, err } if err = n.systemCache.PutObject(systemObjectKey(p.BktInfo, p.ObjName), objInfo); err != nil { n.log.Error("couldn't cache system object", zap.Error(err)) } return objInfo, nil } func (n *layer) headSystemObject(ctx context.Context, bkt *data.BucketInfo, objName string) (*data.ObjectInfo, error) { if objInfo := n.systemCache.GetObject(systemObjectKey(bkt, objName)); objInfo != nil { return objInfo, nil } versions, err := n.headSystemVersions(ctx, bkt, objName) if err != nil { return nil, err } if err = n.systemCache.PutObject(systemObjectKey(bkt, objName), versions.getLast()); err != nil { n.log.Error("couldn't cache system object", zap.Error(err)) } return versions.getLast(), nil } func (n *layer) deleteSystemObject(ctx context.Context, bktInfo *data.BucketInfo, name string) error { f := &findParams{ attr: [2]string{objectSystemAttributeName, name}, cid: bktInfo.CID, } ids, err := n.objectSearch(ctx, f) if err != nil { return err } for i := range ids { if err = n.objectDelete(ctx, bktInfo.CID, &ids[i]); err != nil { return err } } n.systemCache.Delete(systemObjectKey(bktInfo, name)) return nil } func (n *layer) putSystemObjectIntoNeoFS(ctx context.Context, p *PutSystemObjectParams) (*data.ObjectInfo, error) { versions, err := n.headSystemVersions(ctx, p.BktInfo, p.ObjName) if err != nil && !errors.IsS3Error(err, errors.ErrNoSuchKey) { return nil, err } prm := PrmObjectCreate{ Container: *p.BktInfo.CID, Creator: *p.BktInfo.Owner, Attributes: make([][2]string, 2, 2+len(p.Metadata)), Payload: p.Reader, } prm.Attributes[0][0], prm.Attributes[0][1] = objectSystemAttributeName, p.ObjName prm.Attributes[1][0], prm.Attributes[1][1] = attrVersionsIgnore, "true" for k, v := range p.Metadata { if !IsSystemHeader(k) { k = p.Prefix + k } if v == "" && p.Prefix == tagPrefix { v = tagEmptyMark } prm.Attributes = append(prm.Attributes, [2]string{k, v}) } id, err := n.neoFS.CreateObject(ctx, prm) if err != nil { return nil, n.transformNeofsError(ctx, err) } meta, err := n.objectHead(ctx, p.BktInfo.CID, id) if err != nil { return nil, err } idsToDeleteArr := updateCRDT2PSetHeaders(p.Metadata, versions, false) // false means "last write wins" for _, id := range idsToDeleteArr { if err = n.objectDelete(ctx, p.BktInfo.CID, id); err != nil { n.log.Warn("couldn't delete system object", zap.Stringer("version id", id), zap.String("name", p.ObjName), zap.Error(err)) } } return objInfoFromMeta(p.BktInfo, meta), nil } func (n *layer) getSystemObjectFromNeoFS(ctx context.Context, bkt *data.BucketInfo, objName string) (*object.Object, error) { versions, err := n.headSystemVersions(ctx, bkt, objName) if err != nil { return nil, err } objInfo := versions.getLast() var addr address.Address addr.SetContainerID(bkt.CID) addr.SetObjectID(objInfo.ID) obj, err := n.objectGet(ctx, &addr) if err != nil { return nil, err } if len(obj.Payload()) == 0 { return nil, errors.GetAPIError(errors.ErrInternalError) } return obj, nil } func (n *layer) getCORS(ctx context.Context, bkt *data.BucketInfo, sysName string) (*data.CORSConfiguration, error) { if cors := n.systemCache.GetCORS(systemObjectKey(bkt, sysName)); cors != nil { return cors, nil } obj, err := n.getSystemObjectFromNeoFS(ctx, bkt, sysName) if err != nil { return nil, err } cors := &data.CORSConfiguration{} if err = xml.Unmarshal(obj.Payload(), &cors); err != nil { return nil, err } if err = n.systemCache.PutCORS(systemObjectKey(bkt, sysName), cors); err != nil { n.log.Warn("couldn't put system meta to objects cache", zap.Stringer("object id", obj.ID()), zap.Stringer("bucket id", bkt.CID), zap.Error(err)) } return cors, nil } func (n *layer) headSystemVersions(ctx context.Context, bkt *data.BucketInfo, sysName string) (*objectVersions, error) { f := &findParams{ attr: [2]string{objectSystemAttributeName, sysName}, cid: bkt.CID, } ids, err := n.objectSearch(ctx, f) if err != nil { return nil, err } versions := newObjectVersions(sysName) for i := range ids { meta, err := n.objectHead(ctx, bkt.CID, &ids[i]) if err != nil { n.log.Warn("couldn't head object", zap.Stringer("object id", &ids[i]), zap.Stringer("bucket id", bkt.CID), zap.Error(err)) continue } if oi := objInfoFromMeta(bkt, meta); oi != nil { if !isSystem(oi) { continue } versions.appendVersion(oi) } } lastVersion := versions.getLast() if lastVersion == nil { return nil, errors.GetAPIError(errors.ErrNoSuchKey) } return versions, nil } // systemObjectKey is a key to use in SystemCache. func systemObjectKey(bktInfo *data.BucketInfo, obj string) string { return bktInfo.Name + obj }