Add size to Save function (#15264) (#15271)

Backport #15264

This PR proposes an alternative solution to #15255 - just add the size to the
save function. Yes it is less apparently clean but it may be more correct.

Close #15255
Fix #15253

Signed-off-by: Andrew Thornton <art27@cantab.net>

integrations/attachment_test.go

@@ -122,7 +122,7 @@ func TestGetAttachment(t *testing.T) {
 		t.Run(tc.name, func(t *testing.T) {
 			//Write empty file to be available for response
 			if tc.createFile {
-				_, err := storage.Attachments.Save(models.AttachmentRelativePath(tc.uuid), strings.NewReader("hello world"))
+				_, err := storage.Attachments.Save(models.AttachmentRelativePath(tc.uuid), strings.NewReader("hello world"), -1)
 				assert.NoError(t, err)
 			}
 			//Actual test

models/attachment.go

@@ -99,7 +99,7 @@ func (a *Attachment) LinkedRepository() (*Repository, UnitType, error) {
 func NewAttachment(attach *Attachment, buf []byte, file io.Reader) (_ *Attachment, err error) {
 	attach.UUID = gouuid.New().String()
 
-	size, err := storage.Attachments.Save(attach.RelativePath(), io.MultiReader(bytes.NewReader(buf), file))
+	size, err := storage.Attachments.Save(attach.RelativePath(), io.MultiReader(bytes.NewReader(buf), file), -1)
 	if err != nil {
 		return nil, fmt.Errorf("Create: %v", err)
 	}

modules/lfs/content_store.go

@@ -74,7 +74,7 @@ func (s *ContentStore) Put(meta *models.LFSMetaObject, r io.Reader) error {
 
 	// now pass the wrapped reader to Save - if there is a size mismatch or hash mismatch then
 	// the errors returned by the newHashingReader should percolate up to here
-	written, err := s.Save(p, wrappedRd)
+	written, err := s.Save(p, wrappedRd, meta.Size)
 	if err != nil {
 		log.Error("Whilst putting LFS OID[%s]: Failed to copy to tmpPath: %s Error: %v", meta.Oid, p, err)
 		return err

modules/migrations/gitea_uploader.go

@@ -295,7 +295,8 @@ func (g *GiteaLocalUploader) CreateReleases(downloader base.Downloader, releases
 					}
 					rc = resp.Body
 				}
-				_, err = storage.Attachments.Save(attach.RelativePath(), rc)
+				defer rc.Close()
+				_, err = storage.Attachments.Save(attach.RelativePath(), rc, int64(*asset.Size))
 				return err
 			}()
 			if err != nil {

modules/storage/local.go

@@ -65,7 +65,7 @@ func (l *LocalStorage) Open(path string) (Object, error) {
 }
 
 // Save a file
-func (l *LocalStorage) Save(path string, r io.Reader) (int64, error) {
+func (l *LocalStorage) Save(path string, r io.Reader, size int64) (int64, error) {
 	p := filepath.Join(l.dir, path)
 	if err := os.MkdirAll(filepath.Dir(p), os.ModePerm); err != nil {
 		return 0, err

modules/storage/minio.go

@@ -129,13 +129,13 @@ func (m *MinioStorage) Open(path string) (Object, error) {
 }
 
 // Save save a file to minio
-func (m *MinioStorage) Save(path string, r io.Reader) (int64, error) {
+func (m *MinioStorage) Save(path string, r io.Reader, size int64) (int64, error) {
 	uploadInfo, err := m.client.PutObject(
 		m.ctx,
 		m.bucket,
 		m.buildMinioPath(path),
 		r,
-		-1,
+		size,
 		minio.PutObjectOptions{ContentType: "application/octet-stream"},
 	)
 	if err != nil {

modules/storage/storage.go

@@ -65,7 +65,8 @@ type Object interface {
 // ObjectStorage represents an object storage to handle a bucket and files
 type ObjectStorage interface {
 	Open(path string) (Object, error)
-	Save(path string, r io.Reader) (int64, error)
+	// Save store a object, if size is unknown set -1
+	Save(path string, r io.Reader, size int64) (int64, error)
 	Stat(path string) (os.FileInfo, error)
 	Delete(path string) error
 	URL(path, name string) (*url.URL, error)
@@ -80,7 +81,13 @@ func Copy(dstStorage ObjectStorage, dstPath string, srcStorage ObjectStorage, sr
 	}
 	defer f.Close()
 
-	return dstStorage.Save(dstPath, f)
+	size := int64(-1)
+	fsinfo, err := f.Stat()
+	if err == nil {
+		size = fsinfo.Size()
+	}
+
+	return dstStorage.Save(dstPath, f, size)
 }
 
 // SaveFrom saves data to the ObjectStorage with path p from the callback
@@ -94,7 +101,7 @@ func SaveFrom(objStorage ObjectStorage, p string, callback func(w io.Writer) err
 		}
 	}()
 
-	_, err := objStorage.Save(p, pr)
+	_, err := objStorage.Save(p, pr, -1)
 	return err
 }