package layer import ( "context" "errors" "fmt" "io" "net/url" "sort" "strconv" "time" "github.com/nspcc-dev/neofs-api-go/pkg/client" cid "github.com/nspcc-dev/neofs-api-go/pkg/container/id" "github.com/nspcc-dev/neofs-api-go/pkg/object" apiErrors "github.com/nspcc-dev/neofs-s3-gw/api/errors" "go.uber.org/zap" ) type ( findParams struct { val string cid *cid.ID } getParams struct { io.Writer *object.Range offset int64 length int64 address *object.Address } // ListObjectsParamsCommon contains common parameters for ListObjectsV1 and ListObjectsV2. ListObjectsParamsCommon struct { Bucket string Delimiter string Encode string MaxKeys int Prefix string } // ListObjectsParamsV1 contains params for ListObjectsV1. ListObjectsParamsV1 struct { ListObjectsParamsCommon Marker string } // ListObjectsParamsV2 contains params for ListObjectsV2. ListObjectsParamsV2 struct { ListObjectsParamsCommon ContinuationToken string StartAfter string FetchOwner bool } allObjectParams struct { Bucket *BucketInfo Delimiter string Prefix string } ) // objectSearch returns all available objects by search params. func (n *layer) objectSearch(ctx context.Context, p *findParams) ([]*object.ID, error) { var opts object.SearchFilters opts.AddRootFilter() if filename, err := url.QueryUnescape(p.val); err != nil { return nil, err } else if filename != "" { opts.AddFilter(object.AttributeFileName, filename, object.MatchStringEqual) } return n.pool.SearchObject(ctx, new(client.SearchObjectParams).WithContainerID(p.cid).WithSearchFilters(opts), n.BearerOpt(ctx)) } // objectFindID returns object id (uuid) based on it's nice name in s3. If // nice name is uuid compatible, then function returns it. func (n *layer) objectFindID(ctx context.Context, p *findParams) (*object.ID, error) { if result, err := n.objectSearch(ctx, p); err != nil { return nil, err } else if ln := len(result); ln == 0 { return nil, apiErrors.GetAPIError(apiErrors.ErrNoSuchKey) } else if ln == 1 { return result[0], nil } return nil, errors.New("several objects with the same name found") } // objectHead returns all object's headers. func (n *layer) objectHead(ctx context.Context, address *object.Address) (*object.Object, error) { ops := new(client.ObjectHeaderParams).WithAddress(address).WithAllFields() return n.pool.GetObjectHeader(ctx, ops, n.BearerOpt(ctx)) } // objectGet and write it into provided io.Reader. func (n *layer) objectGet(ctx context.Context, p *getParams) (*object.Object, error) { // prepare length/offset writer w := newWriter(p.Writer, p.offset, p.length) ops := new(client.GetObjectParams).WithAddress(p.address).WithPayloadWriter(w) return n.pool.GetObject(ctx, ops, n.BearerOpt(ctx)) } // objectRange gets object range and writes it into provided io.Writer. func (n *layer) objectRange(ctx context.Context, p *getParams) ([]byte, error) { w := newWriter(p.Writer, p.offset, p.length) ops := new(client.RangeDataParams).WithAddress(p.address).WithDataWriter(w).WithRange(p.Range) return n.pool.ObjectPayloadRangeData(ctx, ops, n.BearerOpt(ctx)) } // objectPut into NeoFS, took payload from io.Reader. func (n *layer) objectPut(ctx context.Context, p *PutObjectParams) (*ObjectInfo, error) { var ( err error obj string bkt *BucketInfo own = n.Owner(ctx) ) if p.Object == bktVersionSettingsObject { return nil, fmt.Errorf("trying put bucket settings object") } if obj, err = url.QueryUnescape(p.Object); err != nil { return nil, err } if bkt, err = n.GetBucketInfo(ctx, p.Bucket); err != nil { return nil, err } lastVersionInfo, err := n.headLastVersion(ctx, bkt, p.Object) if err != nil && !apiErrors.IsS3Error(err, apiErrors.ErrNoSuchKey) { return nil, err } attributes := make([]*object.Attribute, 0, len(p.Header)+1) var idsToDeleteArr []*object.ID if lastVersionInfo != nil { versionsDeletedStr := lastVersionInfo.Headers["S3-Versions-del"] if len(versionsDeletedStr) != 0 { versionsDeletedStr += "," } versionsDeletedStr += lastVersionInfo.ID().String() deletedVersions := object.NewAttribute() deletedVersions.SetKey("S3-Versions-del") deletedVersions.SetValue(versionsDeletedStr) attributes = append(attributes, deletedVersions) idsToDeleteArr = append(idsToDeleteArr, lastVersionInfo.ID()) } unix := strconv.FormatInt(time.Now().UTC().Unix(), 10) filename := object.NewAttribute() filename.SetKey(object.AttributeFileName) filename.SetValue(obj) createdAt := object.NewAttribute() createdAt.SetKey(object.AttributeTimestamp) createdAt.SetValue(unix) attributes = append(attributes, filename, createdAt) for k, v := range p.Header { ua := object.NewAttribute() ua.SetKey(k) ua.SetValue(v) attributes = append(attributes, ua) } raw := object.NewRaw() raw.SetOwnerID(own) raw.SetContainerID(bkt.CID) raw.SetAttributes(attributes...) r := newDetector(p.Reader) ops := new(client.PutObjectParams).WithObject(raw.Object()).WithPayloadReader(r) oid, err := n.pool.PutObject( ctx, ops, n.BearerOpt(ctx), ) if err != nil { return nil, err } addr := object.NewAddress() addr.SetObjectID(oid) addr.SetContainerID(bkt.CID) meta, err := n.objectHead(ctx, addr) if err != nil { return nil, err } if err = n.objCache.Put(addr, *meta); err != nil { n.log.Error("couldn't cache an object", zap.Error(err)) } objInfo := &ObjectInfo{ id: oid, Owner: own, Bucket: p.Bucket, Name: p.Object, Size: p.Size, Created: time.Now(), Headers: p.Header, ContentType: r.contentType, HashSum: meta.PayloadChecksum().String(), } for _, id := range idsToDeleteArr { addr := object.NewAddress() addr.SetObjectID(id) addr.SetContainerID(bkt.CID) if err = n.objectDelete(ctx, addr); err != nil { n.log.Warn("couldn't delete object", zap.Stringer("version id", id), zap.Error(err)) } } return objInfo, nil } func (n *layer) headLastVersion(ctx context.Context, bkt *BucketInfo, objectName string) (*ObjectInfo, error) { ids, err := n.objectSearch(ctx, &findParams{cid: bkt.CID, val: objectName}) if err != nil { return nil, err } if len(ids) == 0 { return nil, api.GetAPIError(api.ErrNoSuchKey) } infos := make([]*object.Object, 0, len(ids)) for _, id := range ids { addr := object.NewAddress() addr.SetContainerID(bkt.CID) addr.SetObjectID(id) meta, err := n.objectHead(ctx, addr) if err != nil { n.log.Warn("couldn't head object", zap.Stringer("object id", id), zap.Stringer("bucket id", bkt.CID), zap.Error(err)) continue } infos = append(infos, meta) } sort.Slice(infos, func(i, j int) bool { return infos[i].CreationEpoch() < infos[j].CreationEpoch() || (infos[i].CreationEpoch() == infos[j].CreationEpoch() && infos[i].ID().String() < infos[j].ID().String()) }) return objectInfoFromMeta(bkt, infos[len(infos)-1], "", ""), nil //versionsToDeleteStr, ok := lastVersionInfo.Headers["S3-Versions-add"] //versionsDeletedStr := lastVersionInfo.Headers["S3-Versions-del"] //idsToDeleteArr := []*object.ID{lastVersionInfo.ID()} //if ok { // // for versioning mode only // idsToDelete := strings.Split(versionsToDeleteStr, ",") // for _, idStr := range idsToDelete { // oid := object.NewID() // if err = oid.Parse(idStr); err != nil { // n.log.Warn("couldn't parse object id versions list", // zap.String("versions id", versionsToDeleteStr), // zap.Error(err)) // break // } // idsToDeleteArr = append(idsToDeleteArr, oid) // } //} } // objectDelete puts tombstone object into neofs. func (n *layer) objectDelete(ctx context.Context, address *object.Address) error { dop := new(client.DeleteObjectParams) dop.WithAddress(address) n.objCache.Delete(address) return n.pool.DeleteObject(ctx, dop, n.BearerOpt(ctx)) } // ListObjectsV1 returns objects in a bucket for requests of Version 1. func (n *layer) ListObjectsV1(ctx context.Context, p *ListObjectsParamsV1) (*ListObjectsInfoV1, error) { var ( err error result ListObjectsInfoV1 allObjects []*ObjectInfo ) if p.MaxKeys == 0 { return &result, nil } if allObjects, err = n.listAllObjects(ctx, p.ListObjectsParamsCommon); err != nil { return nil, err } if len(allObjects) == 0 { return &result, nil } if p.Marker != "" { allObjects = trimAfterObjectName(p.Marker, allObjects) } if len(allObjects) > p.MaxKeys { result.IsTruncated = true allObjects = allObjects[:p.MaxKeys] result.NextMarker = allObjects[len(allObjects)-1].Name } result.Prefixes, result.Objects = triageObjects(allObjects) return &result, nil } // ListObjectsV2 returns objects in a bucket for requests of Version 2. func (n *layer) ListObjectsV2(ctx context.Context, p *ListObjectsParamsV2) (*ListObjectsInfoV2, error) { var ( err error result ListObjectsInfoV2 allObjects []*ObjectInfo ) if p.MaxKeys == 0 { return &result, nil } if allObjects, err = n.listAllObjects(ctx, p.ListObjectsParamsCommon); err != nil { return nil, err } if len(allObjects) == 0 { return &result, nil } if p.ContinuationToken != "" { allObjects = trimAfterObjectID(p.ContinuationToken, allObjects) } if p.StartAfter != "" { allObjects = trimAfterObjectName(p.StartAfter, allObjects) } if len(allObjects) > p.MaxKeys { result.IsTruncated = true allObjects = allObjects[:p.MaxKeys] result.NextContinuationToken = allObjects[len(allObjects)-1].id.String() } result.Prefixes, result.Objects = triageObjects(allObjects) return &result, nil } func (n *layer) listSortedObjectsFromNeoFS(ctx context.Context, p allObjectParams) ([]*ObjectInfo, error) { var ( err error ids []*object.ID uniqNames = make(map[string]bool) ) if ids, err = n.objectSearch(ctx, &findParams{cid: p.Bucket.CID}); err != nil { return nil, err } objects := make([]*ObjectInfo, 0, len(ids)) for _, id := range ids { addr := object.NewAddress() addr.SetObjectID(id) addr.SetContainerID(p.Bucket.CID) meta, err := n.objectHead(ctx, addr) if err != nil { n.log.Warn("could not fetch object meta", zap.Error(err)) continue } if oi := objectInfoFromMeta(p.Bucket, meta, p.Prefix, p.Delimiter); oi != nil { // use only unique dir names if _, ok := uniqNames[oi.Name]; ok { continue } uniqNames[oi.Name] = oi.isDir objects = append(objects, oi) } } sort.Slice(objects, func(i, j int) bool { return objects[i].Name < objects[j].Name }) return objects, nil } func trimAfterObjectName(startAfter string, objects []*ObjectInfo) []*ObjectInfo { if len(objects) != 0 && objects[len(objects)-1].Name <= startAfter { return nil } for i := range objects { if objects[i].Name > startAfter { return objects[i:] } } return nil } func trimAfterObjectID(id string, objects []*ObjectInfo) []*ObjectInfo { if len(objects) != 0 && objects[len(objects)-1].id.String() == id { return []*ObjectInfo{} } for i, obj := range objects { if obj.ID().String() == id { return objects[i+1:] } } return nil } func triageObjects(allObjects []*ObjectInfo) (prefixes []string, objects []*ObjectInfo) { for _, ov := range allObjects { if ov.isDir { prefixes = append(prefixes, ov.Name) } else { objects = append(objects, ov) } } return } func (n *layer) listAllObjects(ctx context.Context, p ListObjectsParamsCommon) ([]*ObjectInfo, error) { var ( err error bkt *BucketInfo cacheKey cacheOptions allObjects []*ObjectInfo ) if bkt, err = n.GetBucketInfo(ctx, p.Bucket); err != nil { return nil, err } if cacheKey, err = createKey(ctx, bkt.CID, p.Prefix, p.Delimiter); err != nil { return nil, err } allObjects = n.listObjCache.Get(cacheKey) if allObjects == nil { allObjects, err = n.listSortedObjectsFromNeoFS(ctx, allObjectParams{ Bucket: bkt, Prefix: p.Prefix, Delimiter: p.Delimiter, }) if err != nil { return nil, err } // putting to cache a copy of allObjects because allObjects can be modified further n.listObjCache.Put(cacheKey, append([]*ObjectInfo(nil), allObjects...)) } return allObjects, nil }