diff --git a/api/errors/errors.go b/api/errors/errors.go index 672ac26..8ee4654 100644 --- a/api/errors/errors.go +++ b/api/errors/errors.go @@ -42,6 +42,7 @@ const ( ErrInvalidMaxUploads ErrInvalidMaxParts ErrInvalidPartNumberMarker + ErrInvalidAttributeName ErrInvalidPartNumber ErrInvalidRequestBody ErrInvalidCopySource @@ -335,6 +336,12 @@ var errorCodes = errorCodeMap{ Description: "Argument partNumberMarker must be an integer.", HTTPStatusCode: http.StatusBadRequest, }, + ErrInvalidAttributeName: { + ErrCode: ErrInvalidAttributeName, + Code: "InvalidArgument", + Description: "Invalid attribute name specified", + HTTPStatusCode: http.StatusBadRequest, + }, ErrInvalidPolicyDocument: { ErrCode: ErrInvalidPolicyDocument, Code: "InvalidPolicyDocument", diff --git a/api/handler/attributes.go b/api/handler/attributes.go new file mode 100644 index 0000000..0289280 --- /dev/null +++ b/api/handler/attributes.go @@ -0,0 +1,233 @@ +package handler + +import ( + "net/http" + "strconv" + "strings" + + "github.com/nspcc-dev/neofs-s3-gw/api" + "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" +) + +type ( + GetObjectAttributesResponse struct { + ETag string `xml:"ETag,omitempty"` + ObjectSize int64 `xml:"ObjectSize,omitempty"` + StorageClass string `xml:"StorageClass,omitempty"` + ObjectParts *ObjectParts `xml:"ObjectParts,omitempty"` + } + + ObjectParts struct { + IsTruncated bool `xml:"IsTruncated,omitempty"` + MaxParts int `xml:"MaxParts,omitempty"` + NextPartNumberMarker int `xml:"NextPartNumberMarker,omitempty"` + PartNumberMarker int `xml:"PartNumberMarker,omitempty"` + Parts []Part `xml:"Part,omitempty"` + PartsCount int `xml:"PartsCount,omitempty"` + } + + Part struct { + PartNumber int `xml:"PartNumber,omitempty"` + Size int `xml:"Size,omitempty"` + } + + GetObjectAttributesArgs struct { + MaxParts int + PartNumberMarker int + Attributes []string + VersionID string + } +) + +const ( + partNumberMarkerDefault = -1 + + eTag = "ETag" + checksum = "Checksum" + objectParts = "ObjectParts" + storageClass = "StorageClass" + objectSize = "ObjectSize" +) + +var validAttributes = map[string]struct{}{ + eTag: {}, + checksum: {}, + objectParts: {}, + storageClass: {}, + objectSize: {}, +} + +func (h *handler) GetObjectAttributesHandler(w http.ResponseWriter, r *http.Request) { + var ( + err error + info *data.ObjectInfo + + reqInfo = api.GetReqInfo(r.Context()) + ) + + params, err := parseGetObjectAttributeArgs(r) + if err != nil { + h.logAndSendError(w, "invalid request", reqInfo, err) + return + } + + bktInfo, err := h.getBucketAndCheckOwner(r, reqInfo.BucketName) + if err != nil { + h.logAndSendError(w, "could not get bucket info", reqInfo, err) + return + } + + p := &layer.HeadObjectParams{ + BktInfo: bktInfo, + Object: reqInfo.ObjectName, + VersionID: params.VersionID, + } + + if info, err = h.obj.GetObjectInfo(r.Context(), p); err != nil { + h.logAndSendError(w, "could not fetch object info", reqInfo, err) + return + } + + response, err := encodeToObjectAttributesResponse(info, params) + if err != nil { + h.logAndSendError(w, "couldn't encode object info to response", reqInfo, err) + return + } + + writeAttributesHeaders(w.Header(), info, params) + if err = api.EncodeToResponse(w, response); err != nil { + h.logAndSendError(w, "something went wrong", reqInfo, err) + } +} + +func writeAttributesHeaders(h http.Header, info *data.ObjectInfo, params *GetObjectAttributesArgs) { + h.Set(api.LastModified, info.Created.UTC().Format(http.TimeFormat)) + if len(params.VersionID) != 0 { + h.Set(api.AmzVersionID, info.Version()) + } + + if _, ok := info.Headers[layer.VersionsDeleteMarkAttr]; ok { + h.Set(api.AmzDeleteMarker, strconv.FormatBool(true)) + } + + // x-amz-request-charged +} + +func parseGetObjectAttributeArgs(r *http.Request) (*GetObjectAttributesArgs, error) { + var ( + err error + + res = &GetObjectAttributesArgs{} + attributesVal = r.Header.Get("X-Amz-Object-Attributes") + maxPartsVal = r.Header.Get("X-Amz-Max-Parts") + markerVal = r.Header.Get("X-Amz-Part-Number-Marker") + queryValues = r.URL.Query() + ) + + if attributesVal == "" { + return nil, errors.GetAPIError(errors.ErrInvalidAttributeName) + } + + attributes := strings.Split(attributesVal, ",") + for _, a := range attributes { + if _, ok := validAttributes[a]; !ok { + return nil, errors.GetAPIError(errors.ErrInvalidAttributeName) + } + res.Attributes = append(res.Attributes, a) + } + + if maxPartsVal == "" { + res.MaxParts = layer.MaxSizePartsList + } else if res.MaxParts, err = strconv.Atoi(maxPartsVal); err != nil || res.MaxParts < 0 { + return nil, errors.GetAPIError(errors.ErrInvalidMaxKeys) + } + + if markerVal == "" { + res.PartNumberMarker = partNumberMarkerDefault + } else if res.PartNumberMarker, err = strconv.Atoi(markerVal); err != nil || res.PartNumberMarker < 0 { + return nil, errors.GetAPIError(errors.ErrInvalidPartNumberMarker) + } + + res.VersionID = queryValues.Get(api.QueryVersionID) + + return res, nil +} + +func encodeToObjectAttributesResponse(info *data.ObjectInfo, p *GetObjectAttributesArgs) (*GetObjectAttributesResponse, error) { + resp := &GetObjectAttributesResponse{} + + for _, attr := range p.Attributes { + switch attr { + case eTag: + resp.ETag = info.HashSum + case storageClass: + resp.StorageClass = "STANDARD" + case objectSize: + resp.ObjectSize = info.Size + case objectParts: + parts, err := formUploadAttributes(info, p.MaxParts, p.PartNumberMarker) + if err != nil { + return nil, err + } + if parts != nil { + resp.ObjectParts = parts + } + } + } + + return resp, nil +} + +func formUploadAttributes(info *data.ObjectInfo, maxParts, marker int) (*ObjectParts, error) { + res := ObjectParts{} + + if _, ok := info.Headers[layer.UploadIDAttributeName]; !ok { + return nil, nil + } + + parts := make([]Part, 0) + val, ok := info.Headers[layer.UploadCompletedParts] + if ok { + pairs := strings.Split(val, ",") + for _, p := range pairs { + // nums[0] -- part number, nums[1] -- part size + nums := strings.Split(p, "=") + if len(nums) != 2 { + return nil, nil + } + num, err := strconv.Atoi(nums[0]) + if err != nil { + return nil, err + } + size, err := strconv.Atoi(nums[1]) + if err != nil { + return nil, err + } + parts = append(parts, Part{PartNumber: num, Size: size}) + } + } + + res.PartsCount = len(parts) + + if marker != partNumberMarkerDefault { + res.PartNumberMarker = marker + for i, n := range parts { + if n.PartNumber == marker { + parts = parts[i:] + break + } + } + } + res.MaxParts = maxParts + if len(parts) > maxParts { + res.IsTruncated = true + res.NextPartNumberMarker = parts[maxParts].PartNumber + parts = parts[:maxParts] + } + + res.Parts = parts + + return &res, nil +} diff --git a/api/layer/multipart_upload.go b/api/layer/multipart_upload.go index 85fec40..86aa408 100644 --- a/api/layer/multipart_upload.go +++ b/api/layer/multipart_upload.go @@ -22,6 +22,7 @@ const ( UploadIDAttributeName = "S3-Upload-Id" UploadPartNumberAttributeName = "S3-Upload-Part-Number" UploadKeyAttributeName = "S3-Upload-Key" + UploadCompletedParts = "S3-Completed-Parts" UploadPartKeyPrefix = ".upload-" MaxSizeUploadsList = 1000 @@ -222,7 +223,10 @@ func (x *multiObjectReader) Read(p []byte) (n int, err error) { } func (n *layer) CompleteMultipartUpload(ctx context.Context, p *CompleteMultipartParams) (*data.ObjectInfo, error) { - var obj *data.ObjectInfo + var ( + obj *data.ObjectInfo + partsAttrValue string + ) for i := 1; i < len(p.Parts); i++ { if p.Parts[i].PartNumber <= p.Parts[i-1].PartNumber { @@ -277,6 +281,7 @@ func (n *layer) CompleteMultipartUpload(ctx context.Context, p *CompleteMultipar return nil, errors.GetAPIError(errors.ErrEntityTooSmall) } parts = append(parts, info) + partsAttrValue += strconv.Itoa(part.PartNumber) + "=" + strconv.FormatInt(info.Size, 10) + "," } initMetadata := objects[0].Headers @@ -293,6 +298,8 @@ func (n *layer) CompleteMultipartUpload(ctx context.Context, p *CompleteMultipar delete(initMetadata, objectSystemAttributeName) delete(initMetadata, versionsUnversionedAttr) + initMetadata[UploadCompletedParts] = partsAttrValue[:len(partsAttrValue)-1] + r := &multiObjectReader{ ctx: ctx, layer: n, diff --git a/api/router.go b/api/router.go index 6505ad8..f6c5c10 100644 --- a/api/router.go +++ b/api/router.go @@ -26,6 +26,7 @@ type ( GetObjectRetentionHandler(http.ResponseWriter, *http.Request) GetObjectLegalHoldHandler(http.ResponseWriter, *http.Request) GetObjectHandler(http.ResponseWriter, *http.Request) + GetObjectAttributesHandler(http.ResponseWriter, *http.Request) CopyObjectHandler(http.ResponseWriter, *http.Request) PutObjectRetentionHandler(http.ResponseWriter, *http.Request) PutObjectLegalHoldHandler(http.ResponseWriter, *http.Request) @@ -276,6 +277,10 @@ func Attach(r *mux.Router, domains []string, m MaxClients, h Handler, center aut bucket.Methods(http.MethodGet).Path("/{object:.+}").HandlerFunc( m.Handle(metrics.APIStats("getobjectlegalhold", h.GetObjectLegalHoldHandler))).Queries("legal-hold", ""). Name("GetObjectLegalHold") + // GetObjectAttributes + bucket.Methods(http.MethodGet).Path("/{object:.+}").HandlerFunc( + m.Handle(metrics.APIStats("getobjectattributes", h.GetObjectAttributesHandler))).Queries("attributes", ""). + Name("GetObjectAttributes") // GetObject bucket.Methods(http.MethodGet).Path("/{object:.+}").HandlerFunc( m.Handle(metrics.APIStats("getobject", h.GetObjectHandler))). diff --git a/docs/aws_s3_compat.md b/docs/aws_s3_compat.md index 74bc305..85fbdc1 100644 --- a/docs/aws_s3_compat.md +++ b/docs/aws_s3_compat.md @@ -26,6 +26,7 @@ Reference: | 🟢 | PutObject | Content-MD5 header deprecated | | 🔵 | SelectObjectContent | Need to have some Lambda to execute SQL | | 🔵 | WriteGetObjectResponse | Waiting for Lambda to be developed | +| 🟢 | GetObjectAttributes | | ## ACL