[#476] Save full parts info to multipart object

Signed-off-by: Denis Kirillov <denis@nspcc.ru>

api/data/tree.go

@@ -1,6 +1,7 @@
 package data
 
 import (
+	"strconv"
 	"time"
 
 	cid "github.com/nspcc-dev/neofs-sdk-go/container/id"
@@ -67,6 +68,11 @@ type PartInfo struct {
 	Created  time.Time
 }
 
+// ToHeaderString form short part representation to use in S3-Completed-Parts header.
+func (p *PartInfo) ToHeaderString() string {
+	return strconv.Itoa(p.Number) + "-" + strconv.FormatInt(p.Size, 10) + "-" + p.ETag
+}
+
 // LockInfo is lock information to create appropriate tree node.
 type LockInfo struct {
 	ID           uint64

api/handler/attributes.go

@@ -15,28 +15,34 @@ import (
 type (
 	GetObjectAttributesResponse struct {
 		ETag         string       `xml:"ETag,omitempty"`
+		Checksum     *Checksum    `xml:"Checksum,omitempty"`
 		ObjectSize   int64        `xml:"ObjectSize,omitempty"`
 		StorageClass string       `xml:"StorageClass,omitempty"`
 		ObjectParts  *ObjectParts `xml:"ObjectParts,omitempty"`
 	}
 
+	Checksum struct {
+		ChecksumSHA256 string `xml:"ChecksumSHA256,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"`
-
-		// Only this field is used.
 		PartsCount           int    `xml:"PartsCount,omitempty"`
 	}
 
 	Part struct {
+		ChecksumSHA256 string `xml:"ChecksumSHA256,omitempty"`
 		PartNumber     int    `xml:"PartNumber,omitempty"`
 		Size           int    `xml:"Size,omitempty"`
 	}
 
 	GetObjectAttributesArgs struct {
+		MaxParts         int
+		PartNumberMarker int
 		Attributes       []string
 		VersionID        string
 		Conditional      *conditionalArgs
@@ -138,7 +144,23 @@ func parseGetObjectAttributeArgs(r *http.Request) (*GetObjectAttributesArgs, err
 		res.Attributes = append(res.Attributes, a)
 	}
 
-	return res, nil
+	var err error
+	maxPartsVal := r.Header.Get(api.AmzMaxParts)
+	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)
+	}
+
+	markerVal := r.Header.Get(api.AmzPartNumberMarker)
+	if markerVal != "" {
+		if res.PartNumberMarker, err = strconv.Atoi(markerVal); err != nil || res.PartNumberMarker < 0 {
+			return nil, errors.GetAPIError(errors.ErrInvalidPartNumberMarker)
+		}
+	}
+
+	res.Conditional, err = parseConditionalHeaders(r.Header)
+	return res, err
 }
 
 func encodeToObjectAttributesResponse(info *data.ObjectInfo, p *GetObjectAttributesArgs) (*GetObjectAttributesResponse, error) {
@@ -152,8 +174,10 @@ func encodeToObjectAttributesResponse(info *data.ObjectInfo, p *GetObjectAttribu
 			resp.StorageClass = "STANDARD"
 		case objectSize:
 			resp.ObjectSize = info.Size
+		case checksum:
+			resp.Checksum = &Checksum{ChecksumSHA256: info.HashSum}
 		case objectParts:
-			parts, err := formUploadAttributes(info)
+			parts, err := formUploadAttributes(info, p.MaxParts, p.PartNumberMarker)
 			if err != nil {
 				return nil, fmt.Errorf("form upload attributes: %w", err)
 			}
@@ -166,19 +190,62 @@ func encodeToObjectAttributesResponse(info *data.ObjectInfo, p *GetObjectAttribu
 	return resp, nil
 }
 
-func formUploadAttributes(info *data.ObjectInfo) (*ObjectParts, error) {
+func formUploadAttributes(info *data.ObjectInfo, maxParts, marker int) (*ObjectParts, error) {
-	var err error
+	completedParts, ok := info.Headers[layer.UploadCompletedParts]
-	res := ObjectParts{}
-
-	partsCountStr, ok := info.Headers[layer.UploadCompletedPartsCount]
 	if !ok {
 		return nil, nil
 	}
 
-	res.PartsCount, err = strconv.Atoi(partsCountStr)
+	partInfos := strings.Split(completedParts, ",")
+	parts := make([]Part, len(partInfos))
+	for i, p := range partInfos {
+		// partInfo[0] -- part number, partInfo[1] -- part size, partInfo[2] -- checksum
+		partInfo := strings.Split(p, "-")
+		if len(partInfo) != 3 {
+			return nil, fmt.Errorf("invalid completed parts header")
+		}
+		num, err := strconv.Atoi(partInfo[0])
 		if err != nil {
-		return nil, fmt.Errorf("invalid parts count header '%s': %w", partsCountStr, err)
+			return nil, err
+		}
+		size, err := strconv.Atoi(partInfo[1])
+		if err != nil {
+			return nil, err
+		}
+		parts[i] = Part{
+			PartNumber:     num,
+			Size:           size,
+			ChecksumSHA256: partInfo[2],
+		}
 	}
 
-	return &res, nil
+	res := &ObjectParts{
+		PartsCount: len(parts),
+	}
+
+	if marker != 0 {
+		res.PartNumberMarker = marker
+		var found bool
+		for i, n := range parts {
+			if n.PartNumber == marker {
+				parts = parts[i:]
+				found = true
+				break
+			}
+		}
+		if !found {
+			return nil, errors.GetAPIError(errors.ErrInvalidPartNumberMarker)
+		}
+	}
+
+	res.MaxParts = maxParts
+	if len(parts) > maxParts {
+		res.IsTruncated = true
+		res.NextPartNumberMarker = parts[maxParts].PartNumber
+		parts = parts[:maxParts]
+	}
+
+	res.Parts = parts
+
+	return res, nil
 }

api/handler/atttributes_test.go

@@ -67,5 +67,8 @@ func TestGetObjectPartsAttributes(t *testing.T) {
 	result = &GetObjectAttributesResponse{}
 	parseTestResponse(t, w, result)
 	require.NotNil(t, result.ObjectParts)
+	require.Len(t, result.ObjectParts.Parts, 1)
+	require.Equal(t, etag, result.ObjectParts.Parts[0].ChecksumSHA256)
+	require.Equal(t, 8, result.ObjectParts.Parts[0].Size)
 	require.Equal(t, 1, result.ObjectParts.PartsCount)
 }

api/headers.go

@@ -53,6 +53,8 @@ const (
 	AmzObjectLockRetainUntilDate = "X-Amz-Object-Lock-Retain-Until-Date"
 	AmzBypassGovernanceRetention = "X-Amz-Bypass-Governance-Retention"
 	AmzObjectAttributes          = "X-Amz-Object-Attributes"
+	AmzMaxParts                  = "X-Amz-Max-Parts"
+	AmzPartNumberMarker          = "X-Amz-Part-Number-Marker"
 
 	ContainerID = "X-Container-Id"
 

api/layer/multipart_upload.go

@@ -22,7 +22,7 @@ import (
 const (
 	UploadIDAttributeName         = "S3-Upload-Id"
 	UploadPartNumberAttributeName = "S3-Upload-Part-Number"
-	UploadCompletedPartsCount     = "S3-Completed-Parts-Count"
+	UploadCompletedParts          = "S3-Completed-Parts"
 
 	metaPrefix = "meta-"
 	aclPrefix  = "acl-"
@@ -337,6 +337,7 @@ func (n *layer) CompleteMultipartUpload(ctx context.Context, p *CompleteMultipar
 
 	parts := make([]*data.PartInfo, 0, len(p.Parts))
 
+	var completedPartsHeader strings.Builder
 	for i, part := range p.Parts {
 		partInfo := partsInfo[part.PartNumber]
 		if part.ETag != partInfo.ETag {
@@ -347,10 +348,19 @@ func (n *layer) CompleteMultipartUpload(ctx context.Context, p *CompleteMultipar
 			return nil, nil, errors.GetAPIError(errors.ErrEntityTooSmall)
 		}
 		parts = append(parts, partInfo)
+
+		partInfoStr := partInfo.ToHeaderString()
+		if i != len(p.Parts)-1 {
+			partInfoStr += ","
+		}
+		if _, err = completedPartsHeader.WriteString(partInfoStr); err != nil {
+			return nil, nil, err
+		}
 	}
 
 	initMetadata := make(map[string]string, len(multipartInfo.Meta)+1)
-	initMetadata[UploadCompletedPartsCount] = strconv.Itoa(len(p.Parts))
+	initMetadata[UploadCompletedParts] = completedPartsHeader.String()
+
 	uploadData := &UploadData{
 		TagSet:     make(map[string]string),
 		ACLHeaders: make(map[string]string),

api/layer/tree_mock.go

@@ -21,8 +21,9 @@ type TreeServiceMock struct {
 }
 
 func (t *TreeServiceMock) GetObjectTaggingAndLock(ctx context.Context, cnrID *cid.ID, objVersion *data.NodeVersion) (map[string]string, *data.LockInfo, error) {
-	// TODO implement me
+	// TODO implement object tagging
-	panic("implement me")
+	lock, err := t.GetLock(ctx, cnrID, objVersion.ID)
+	return nil, lock, err
 }
 
 func (t *TreeServiceMock) GetObjectTagging(ctx context.Context, cnrID *cid.ID, objVersion *data.NodeVersion) (map[string]string, error) {