api/handler/handlers_test.go

@@ -323,6 +323,8 @@ func assertStatus(t *testing.T, w *httptest.ResponseRecorder, status int) {
 
 func readResponse(t *testing.T, w *httptest.ResponseRecorder, status int, model interface{}) {
 	assertStatus(t, w, status)
-	err := xml.NewDecoder(w.Result().Body).Decode(model)
-	require.NoError(t, err)
+	if status == http.StatusOK {
+		err := xml.NewDecoder(w.Result().Body).Decode(model)
+		require.NoError(t, err)
+	}
 }

api/handler/multipart_upload.go

@@ -600,7 +600,7 @@ func (h *handler) ListPartsHandler(w http.ResponseWriter, r *http.Request) {
 	}
 
 	if queryValues.Get("part-number-marker") != "" {
-		if partNumberMarker, err = strconv.Atoi(queryValues.Get("part-number-marker")); err != nil || partNumberMarker <= 0 {
+		if partNumberMarker, err = strconv.Atoi(queryValues.Get("part-number-marker")); err != nil || partNumberMarker < 0 {
 			h.logAndSendError(w, "invalid PartNumberMarker", reqInfo, err, additional...)
 			return
 		}

api/handler/multipart_upload_test.go

@@ -16,6 +16,10 @@ import (
 	"github.com/stretchr/testify/require"
 )
 
+const (
+	partNumberMarkerQuery = "part-number-marker"
+)
+
 func TestPeriodicWriter(t *testing.T) {
 	const dur = 100 * time.Millisecond
 	const whitespaces = 8
@@ -80,7 +84,7 @@ func TestMultipartReUploadPart(t *testing.T) {
 	etag1, _ := uploadPart(hc, bktName, objName, uploadInfo.UploadID, 1, partSizeLast)
 	etag2, _ := uploadPart(hc, bktName, objName, uploadInfo.UploadID, 2, partSizeFirst)
 
-	list := listParts(hc, bktName, objName, uploadInfo.UploadID)
+	list := listParts(hc, bktName, objName, uploadInfo.UploadID, "0", http.StatusOK)
 	require.Len(t, list.Parts, 2)
 	require.Equal(t, etag1, list.Parts[0].ETag)
 	require.Equal(t, etag2, list.Parts[1].ETag)
@@ -91,7 +95,7 @@ func TestMultipartReUploadPart(t *testing.T) {
 	etag1, data1 := uploadPart(hc, bktName, objName, uploadInfo.UploadID, 1, partSizeFirst)
 	etag2, data2 := uploadPart(hc, bktName, objName, uploadInfo.UploadID, 2, partSizeLast)
 
-	list = listParts(hc, bktName, objName, uploadInfo.UploadID)
+	list = listParts(hc, bktName, objName, uploadInfo.UploadID, "0", http.StatusOK)
 	require.Len(t, list.Parts, 2)
 	require.Equal(t, etag1, list.Parts[0].ETag)
 	require.Equal(t, etag2, list.Parts[1].ETag)
@@ -219,6 +223,36 @@ func TestMultipartUploadSize(t *testing.T) {
 	})
 }
 
+func TestListParts(t *testing.T) {
+	hc := prepareHandlerContext(t)
+
+	bktName, objName := "bucket-for-test-list-parts", "object-multipart"
+	_ = createTestBucket(hc, bktName)
+	partSize := 5 * 1024 * 1024
+
+	uploadInfo := createMultipartUpload(hc, bktName, objName, map[string]string{})
+	etag1, _ := uploadPart(hc, bktName, objName, uploadInfo.UploadID, 1, partSize)
+	etag2, _ := uploadPart(hc, bktName, objName, uploadInfo.UploadID, 2, partSize)
+
+	list := listParts(hc, bktName, objName, uploadInfo.UploadID, "0", http.StatusOK)
+	require.Len(t, list.Parts, 2)
+	require.Equal(t, etag1, list.Parts[0].ETag)
+	require.Equal(t, etag2, list.Parts[1].ETag)
+
+	list = listParts(hc, bktName, objName, uploadInfo.UploadID, "1", http.StatusOK)
+	require.Len(t, list.Parts, 1)
+	require.Equal(t, etag2, list.Parts[0].ETag)
+
+	list = listParts(hc, bktName, objName, uploadInfo.UploadID, "2", http.StatusOK)
+	require.Len(t, list.Parts, 0)
+
+	list = listParts(hc, bktName, objName, uploadInfo.UploadID, "7", http.StatusOK)
+	require.Len(t, list.Parts, 0)
+
+	list = listParts(hc, bktName, objName, uploadInfo.UploadID, "-1", http.StatusInternalServerError)
+	require.Len(t, list.Parts, 0)
+}
+
 func uploadPartCopy(hc *handlerContext, bktName, objName, uploadID string, num int, srcObj string, start, end int) *UploadPartCopyResponse {
 	return uploadPartCopyBase(hc, bktName, objName, false, uploadID, num, srcObj, start, end)
 }
@@ -267,13 +301,14 @@ func listMultipartUploadsBase(hc *handlerContext, bktName, prefix, delimiter, up
 	return listPartsResponse
 }
 
-func listParts(hc *handlerContext, bktName, objName string, uploadID string) *ListPartsResponse {
-	return listPartsBase(hc, bktName, objName, false, uploadID)
+func listParts(hc *handlerContext, bktName, objName string, uploadID, partNumberMarker string, status int) *ListPartsResponse {
+	return listPartsBase(hc, bktName, objName, false, uploadID, partNumberMarker, status)
 }
 
-func listPartsBase(hc *handlerContext, bktName, objName string, encrypted bool, uploadID string) *ListPartsResponse {
+func listPartsBase(hc *handlerContext, bktName, objName string, encrypted bool, uploadID, partNumberMarker string, status int) *ListPartsResponse {
 	query := make(url.Values)
 	query.Set(uploadIDQuery, uploadID)
+	query.Set(partNumberMarkerQuery, partNumberMarker)
 
 	w, r := prepareTestRequestWithQuery(hc, bktName, objName, query, nil)
 	if encrypted {
@@ -282,7 +317,7 @@ func listPartsBase(hc *handlerContext, bktName, objName string, encrypted bool,
 
 	hc.Handler().ListPartsHandler(w, r)
 	listPartsResponse := &ListPartsResponse{}
-	readResponse(hc.t, w, http.StatusOK, listPartsResponse)
+	readResponse(hc.t, w, status, listPartsResponse)
 
 	return listPartsResponse
 }

api/layer/multipart_upload.go

@@ -548,6 +548,10 @@ func (n *layer) ListParts(ctx context.Context, p *ListPartsParams) (*ListPartsIn
 		return parts[i].PartNumber < parts[j].PartNumber
 	})
 
+	if p.PartNumberMarker >= parts[len(parts)-1].PartNumber {
+		res.Parts = make([]*Part, 0)
+		return &res, nil
+	}
 	if p.PartNumberMarker != 0 {
 		for i, part := range parts {
 			if part.PartNumber > p.PartNumberMarker {