/
upload.go
86 lines (75 loc) · 2.01 KB
/
upload.go
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package request
import (
"bytes"
"compress/gzip"
"fmt"
"io"
"mime/multipart"
"net/http"
)
//type Uploader struct {
// c *http.Client
// uploadURL string
//}
//
//func New(c *http.Client, uploadURL string) (*Uploader, error) {
// if c == nil {
// return nil, fmt.Errorf("client is nil")
// }
// if uploadURL == "" {
// return nil, fmt.Errorf("uploadURL is empty")
// }
// return &Uploader{
// c: c,
// uploadURL: uploadURL,
// }, nil
//}
func UploadGZIP(uploadURL string, filename string, r io.Reader) (*http.Request, error) {
body := new(bytes.Buffer)
writer := multipart.NewWriter(body)
gzfilename := fmt.Sprintf("%s.gz", filename)
part, err := writer.CreateFormFile("file", gzfilename)
if err != nil {
return nil, fmt.Errorf("create form file: %w", err)
}
gzipW := gzip.NewWriter(part)
_, err = io.Copy(gzipW, r)
if err != nil {
return nil, fmt.Errorf("upload io.copy: %w", err)
}
gzipW.Close()
writer.Close()
return createPostRequest(uploadURL, writer, body)
}
func UploadGZIPZeroMemory(uploadURL string, filename string, r io.Reader) (*http.Request, error) {
pipeR, pipeW := io.Pipe()
writer := multipart.NewWriter(pipeW)
gzfilename := fmt.Sprintf("%s.gz", filename)
go func() {
defer pipeW.Close()
defer writer.Close()
part, err := writer.CreateFormFile("file", gzfilename)
if err != nil {
err = fmt.Errorf("create form file: %w", err)
pipeW.CloseWithError(err)
return
}
gzipW := gzip.NewWriter(part)
defer gzipW.Close()
_, err = io.Copy(gzipW, r)
if err != nil {
err = fmt.Errorf("UploadGZIPZeroMemory io.copy: %w", err)
pipeW.CloseWithError(err)
}
}()
return createPostRequest(uploadURL, writer, pipeR)
}
func createPostRequest(uploadURL string, w *multipart.Writer, r io.Reader) (*http.Request, error) {
req, err := http.NewRequest(http.MethodPost, uploadURL, r)
if err != nil {
return nil, fmt.Errorf("upload io.copy: %w", err)
}
req.Header.Add("Content-Encoding", "gzip")
req.Header.Add("Content-Type", w.FormDataContentType())
return req, nil
}