package layer import ( "bytes" "context" "encoding/json" "encoding/xml" "fmt" "strconv" "time" "github.com/nspcc-dev/neofs-s3-gw/api/data" "github.com/nspcc-dev/neofs-s3-gw/api/errors" "github.com/nspcc-dev/neofs-s3-gw/api/layer/neofs" "github.com/nspcc-dev/neofs-sdk-go/object" "github.com/nspcc-dev/neofs-sdk-go/object/address" "go.uber.org/zap" ) const ( AttributeComplianceMode = ".s3-compliance-mode" AttributeRetainUntil = ".s3-retain-until" AttributeSysTickEpoch = "__NEOFS__TICK_EPOCH" AttributeSysTickTopic = "__NEOFS__TICK_TOPIC" LockTopic = "lock" ) 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 } n.systemCache.Delete(systemObjectKey(bktInfo, name)) for i := range ids { if err = n.objectDelete(ctx, bktInfo.CID, &ids[i]); err != nil { return err } } 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 } idsToDeleteArr := updateCRDT2PSetHeaders(p.Metadata, versions, false) // false means "last write wins" // note that updateCRDT2PSetHeaders modifies p.Metadata and must be called further processing prm := neofs.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 } if p.Lock != nil && len(p.Lock.Objects) > 0 { prm.Locks = p.Lock.Objects attrs, err := n.attributesFromLock(ctx, p.Lock) if err != nil { return nil, err } prm.Attributes = append(prm.Attributes, attrs...) } 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 } 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 } func (n *layer) GetBucketSettings(ctx context.Context, bktInfo *data.BucketInfo) (*data.BucketSettings, error) { systemKey := systemObjectKey(bktInfo, bktInfo.SettingsObjectName()) if settings := n.systemCache.GetSettings(systemKey); settings != nil { return settings, nil } obj, err := n.getSystemObjectFromNeoFS(ctx, bktInfo, bktInfo.SettingsObjectName()) if err != nil { return nil, err } settings := &data.BucketSettings{} if err = json.Unmarshal(obj.Payload(), settings); err != nil { return nil, err } if err = n.systemCache.PutSettings(systemKey, settings); err != nil { n.log.Warn("couldn't put system meta to objects cache", zap.Stringer("object id", obj.ID()), zap.Stringer("bucket id", bktInfo.CID), zap.Error(err)) } return settings, nil } func (n *layer) PutBucketSettings(ctx context.Context, p *PutSettingsParams) error { rawSettings, err := json.Marshal(p.Settings) if err != nil { return fmt.Errorf("couldn't marshal bucket settings") } s := &PutSystemObjectParams{ BktInfo: p.BktInfo, ObjName: p.BktInfo.SettingsObjectName(), Metadata: map[string]string{}, Reader: bytes.NewReader(rawSettings), } obj, err := n.putSystemObjectIntoNeoFS(ctx, s) if err != nil { return err } if obj.Size == 0 { return errors.GetAPIError(errors.ErrInternalError) } systemKey := systemObjectKey(p.BktInfo, p.BktInfo.SettingsObjectName()) if err = n.systemCache.PutSettings(systemKey, p.Settings); err != nil { n.log.Error("couldn't cache system object", zap.Error(err)) } return nil } func (n *layer) attributesFromLock(ctx context.Context, lock *data.ObjectLock) ([][2]string, error) { var result [][2]string if !lock.Until.IsZero() { _, exp, err := n.neoFS.TimeToEpoch(ctx, lock.Until) if err != nil { return nil, err } attrs := [][2]string{ {AttributeSysTickEpoch, strconv.FormatUint(exp, 10)}, {AttributeSysTickTopic, LockTopic}, {AttributeRetainUntil, lock.Until.Format(time.RFC3339)}, } result = append(result, attrs...) if lock.IsCompliance { attrCompliance := [2]string{ AttributeComplianceMode, strconv.FormatBool(true), } result = append(result, attrCompliance) } } return result, nil }