[#417] List parts using tree service

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

api/layer/multipart_upload.go

@@ -15,6 +15,7 @@ import (
 	"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/internal/misc"
+	oid "github.com/nspcc-dev/neofs-sdk-go/object/id"
 	"github.com/nspcc-dev/neofs-sdk-go/user"
 	"go.uber.org/zap"
 )
@@ -321,7 +322,7 @@ func (n *layer) CompleteMultipartUpload(ctx context.Context, p *CompleteMultipar
 		}
 	}
 
-	objects, err := n.getUploadParts(ctx, p.Info)
+	_, objects, err := n.getUploadParts(ctx, p.Info)
 	if err != nil {
 		return nil, err
 	}
@@ -487,7 +488,7 @@ func (n *layer) ListMultipartUploads(ctx context.Context, p *ListMultipartUpload
 }
 
 func (n *layer) AbortMultipartUpload(ctx context.Context, p *UploadInfoParams) error {
-	objects, err := n.getUploadParts(ctx, p)
+	_, objects, err := n.getUploadParts(ctx, p)
 	if err != nil {
 		return err
 	}
@@ -503,12 +504,12 @@ func (n *layer) AbortMultipartUpload(ctx context.Context, p *UploadInfoParams) e
 
 func (n *layer) ListParts(ctx context.Context, p *ListPartsParams) (*ListPartsInfo, error) {
 	var res ListPartsInfo
-	objs, err := n.getUploadParts(ctx, p.Info)
+	multipartInfo, objs, err := n.getUploadParts(ctx, p.Info) // todo consider listing without head object from NeoFS
 	if err != nil {
 		return nil, err
 	}
 
-	res.Owner = objs[0].Owner
+	res.Owner = multipartInfo.Owner
 
 	parts := make([]*Part, 0, len(objs))
 
@@ -560,51 +561,45 @@ func (n *layer) GetUploadInitInfo(ctx context.Context, p *UploadInfoParams) (*da
 	return info, nil
 }
 
-func (n *layer) getUploadParts(ctx context.Context, p *UploadInfoParams) (map[int]*data.ObjectInfo, error) {
-	// we search by UploadID attribute because parts are system objects which have system name not filename
-	// and search in attributes by prefix is not supported
-	f := &findParams{
-		attr: [2]string{UploadIDAttributeName, p.UploadID},
-		bkt:  p.Bkt,
+func (n *layer) getUploadParts(ctx context.Context, p *UploadInfoParams) (*data.MultipartInfo, map[int]*data.ObjectInfo, error) {
+	multipartInfo, err := n.treeService.GetMultipartUpload(ctx, &p.Bkt.CID, p.Key, p.UploadID)
+	if err != nil {
+		if stderrors.Is(err, ErrNodeNotFound) {
+			return nil, nil, errors.GetAPIError(errors.ErrNoSuchUpload)
+		}
+		return nil, nil, err
 	}
 
-	ids, err := n.objectSearch(ctx, f)
+	parts, err := n.treeService.GetParts(ctx, &p.Bkt.CID, multipartInfo.ID)
 	if err != nil {
-		return nil, err
+		return nil, nil, err
 	}
 
 	res := make(map[int]*data.ObjectInfo)
-
-	for i := range ids {
-		meta, err := n.objectHead(ctx, p.Bkt, ids[i])
+	var addr oid.Address
+	addr.SetContainer(p.Bkt.CID)
+	for _, part := range parts {
+		addr.SetObject(part.OID)
+		objInfo := n.objCache.GetObject(addr)
+		if objInfo == nil {
+			meta, err := n.objectHead(ctx, p.Bkt, part.OID)
 			if err != nil {
 				n.log.Warn("couldn't head a part of upload",
-				zap.Stringer("object id", &ids[i]),
-				zap.Stringer("bucket id", p.Bkt.CID),
+					zap.String("object id", part.OID.EncodeToString()),
+					zap.String("bucket id", p.Bkt.CID.EncodeToString()),
 					zap.Error(err))
 				continue
 			}
-		info := objInfoFromMeta(p.Bkt, meta)
-		// skip objects which are completed by "complete-multipart-upload" because they have "s3-Upload-Id" attribute
-		if !isSystem(info) {
-			continue
+			objInfo = objInfoFromMeta(p.Bkt, meta)
 		}
-		numStr := info.Headers[UploadPartNumberAttributeName]
-		num, err := strconv.Atoi(numStr)
-		if err != nil {
-			return nil, errors.GetAPIError(errors.ErrInternalError)
-		}
-		res[num] = info
-		if err = n.systemCache.PutObject(systemObjectKey(p.Bkt, FormUploadPartName(p.UploadID, p.Key, num)), info); err != nil {
+
+		res[part.Number] = objInfo
+		if err = n.objCache.PutObject(objInfo); err != nil {
 			n.log.Warn("couldn't cache upload part", zap.Error(err))
 		}
 	}
 
-	if len(res) == 0 {
-		return nil, errors.GetAPIError(errors.ErrNoSuchUpload)
-	}
-
-	return res, nil
+	return multipartInfo, res, nil
 }
 
 func FormUploadPartName(uploadID, key string, partNumber int) string {

api/layer/tree_service.go

@@ -58,6 +58,7 @@ type TreeService interface {
 	// and returns objectID of a previous part which must be deleted in NeoFS.
 	// If a part is being added for the first time, the previous part ID will be nil.
 	AddPart(ctx context.Context, cnrID *cid.ID, multipartNodeID uint64, info *data.PartInfo) (oldObjIDToDelete *oid.ID, err error)
+	GetParts(ctx context.Context, cnrID *cid.ID, multipartNodeID uint64) ([]*data.PartInfo, error)
 }
 
 // ErrNodeNotFound is returned from Tree service in case of not found error.

internal/neofs/tree.go

@@ -848,6 +848,27 @@ func (c *TreeClient) AddPart(ctx context.Context, cnrID *cid.ID, multipartNodeID
 	return oldObjIDToDelete, c.moveNode(ctx, cnrID, systemTree, foundPartID, multipartNodeID, meta)
 }
 
+func (c *TreeClient) GetParts(ctx context.Context, cnrID *cid.ID, multipartNodeID uint64) ([]*data.PartInfo, error) {
+	parts, err := c.getSubTree(ctx, cnrID, systemTree, multipartNodeID, 1)
+	if err != nil {
+		return nil, err
+	}
+
+	result := make([]*data.PartInfo, 0, len(parts))
+	for _, part := range parts {
+		if part.GetNodeId() == multipartNodeID {
+			continue
+		}
+		partInfo, err := newPartInfo(part)
+		if err != nil {
+			continue
+		}
+		result = append(result, partInfo)
+	}
+
+	return result, nil
+}
+
 func (c *TreeClient) Close() error {
 	if c.conn != nil {
 		return c.conn.Close()

internal/neofstest/tree/tree_mock.go

@@ -251,3 +251,7 @@ func (t *TreeServiceMock) GetMultipartUpload(ctx context.Context, cnrID *cid.ID,
 func (t *TreeServiceMock) AddPart(ctx context.Context, cnrID *cid.ID, multipartNodeID uint64, info *data.PartInfo) (oldObjIDToDelete *oid.ID, err error) {
 	panic("implement me")
 }
+
+func (t *TreeServiceMock) GetParts(ctx context.Context, cnrID *cid.ID, multipartNodeID uint64) ([]*data.PartInfo, error) {
+	panic("implement me")
+}