[#370] Fix multipart upload size in tree node

Signed-off-by: Denis Kirillov <d.kirillov@yadro.com>

api/handler/multipart_upload_test.go

@@ -92,6 +92,22 @@ func TestDeleteMultipartAllParts(t *testing.T) {
 	require.Empty(t, hc.tp.Objects())
 }
 
+func TestMultipartTreeSize(t *testing.T) {
+	hc := prepareHandlerContext(t)
+
+	partSize := layer.UploadMinSize
+	objLen := 6 * partSize
+
+	bktName, objName := "bucket", "object"
+
+	bktInfo := createTestBucket(hc, bktName)
+	multipartUpload(hc, bktName, objName, nil, objLen, partSize)
+
+	nodeVersion, err := hc.tree.GetLatestVersion(hc.Context(), bktInfo, objName)
+	require.NoError(t, err)
+	require.EqualValues(t, objLen, nodeVersion.Size)
+}
+
 func TestMultipartUploadInvalidPart(t *testing.T) {
 	hc := prepareHandlerContext(t)
 

api/layer/object.go

@@ -315,7 +315,7 @@ func (n *layer) PutObject(ctx context.Context, p *PutObjectParams) (*data.Extend
 			OID:      id,
 			ETag:     hex.EncodeToString(hash),
 			FilePath: p.Object,
-			Size:     size,
+			Size:     p.Size,
 		},
 		IsUnversioned: !bktSettings.VersioningEnabled(),
 		IsCombined:    p.Header[MultipartObjectSize] != "",
@@ -356,7 +356,7 @@ func (n *layer) PutObject(ctx context.Context, p *PutObjectParams) (*data.Extend
 		Owner:       n.gateOwner,
 		Bucket:      p.BktInfo.Name,
 		Name:        p.Object,
-		Size:        size,
+		Size:        size, // we don't use here p.Size to be consistent with the objectInfoFromMeta function
 		Created:     prm.CreationTime,
 		Headers:     p.Header,
 		ContentType: p.Header[api.ContentType],