frostfs-http-gw/uploader/multipart.go
Alex Vanin 1f702ad2d8 [#1] Update comments
Signed-off-by: Alex Vanin <a.vanin@yadro.com>
2023-05-19 07:29:52 +00:00

46 lines
1.1 KiB
Go

package uploader
import (
"io"
"git.frostfs.info/TrueCloudLab/frostfs-http-gw/uploader/multipart"
"go.uber.org/zap"
)
// MultipartFile provides standard ReadCloser interface and also allows one to
// get file name, it's used for multipart uploads.
type MultipartFile interface {
io.ReadCloser
FileName() string
}
func fetchMultipartFile(l *zap.Logger, r io.Reader, boundary string) (MultipartFile, error) {
// To have a custom buffer (3mb) the custom multipart reader is used.
// Default reader uses 4KiB chunks, which slow down upload speed up to 400%
// https://github.com/golang/go/blob/91b9915d3f6f8cd2e9e9fda63f67772803adfa03/src/mime/multipart/multipart.go#L32
reader := multipart.NewReader(r, boundary)
for {
part, err := reader.NextPart()
if err != nil {
return nil, err
}
name := part.FormName()
if name == "" {
l.Debug("ignore part, empty form name")
continue
}
filename := part.FileName()
// ignore multipart/form-data values
if filename == "" {
l.Debug("ignore part, empty filename", zap.String("form", name))
continue
}
return part, nil
}
}