mirror of
https://codeberg.org/forgejo/forgejo
synced 2024-11-27 04:06:10 +01:00
136 lines
3.3 KiB
Go
136 lines
3.3 KiB
Go
// Copyright 2021 The Gitea Authors. All rights reserved.
|
|
// Use of this source code is governed by a MIT-style
|
|
// license that can be found in the LICENSE file.
|
|
|
|
package lfs
|
|
|
|
import (
|
|
"bytes"
|
|
"context"
|
|
"errors"
|
|
"fmt"
|
|
"io"
|
|
"net/http"
|
|
|
|
"code.gitea.io/gitea/modules/json"
|
|
"code.gitea.io/gitea/modules/log"
|
|
)
|
|
|
|
// TransferAdapter represents an adapter for downloading/uploading LFS objects
|
|
type TransferAdapter interface {
|
|
Name() string
|
|
Download(ctx context.Context, l *Link) (io.ReadCloser, error)
|
|
Upload(ctx context.Context, l *Link, p Pointer, r io.Reader) error
|
|
Verify(ctx context.Context, l *Link, p Pointer) error
|
|
}
|
|
|
|
// BasicTransferAdapter implements the "basic" adapter
|
|
type BasicTransferAdapter struct {
|
|
client *http.Client
|
|
}
|
|
|
|
// Name returns the name of the adapter
|
|
func (a *BasicTransferAdapter) Name() string {
|
|
return "basic"
|
|
}
|
|
|
|
// Download reads the download location and downloads the data
|
|
func (a *BasicTransferAdapter) Download(ctx context.Context, l *Link) (io.ReadCloser, error) {
|
|
resp, err := a.performRequest(ctx, "GET", l, nil, nil)
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
return resp.Body, nil
|
|
}
|
|
|
|
// Upload sends the content to the LFS server
|
|
func (a *BasicTransferAdapter) Upload(ctx context.Context, l *Link, p Pointer, r io.Reader) error {
|
|
_, err := a.performRequest(ctx, "PUT", l, r, func(req *http.Request) {
|
|
if len(req.Header.Get("Content-Type")) == 0 {
|
|
req.Header.Set("Content-Type", "application/octet-stream")
|
|
}
|
|
|
|
if req.Header.Get("Transfer-Encoding") == "chunked" {
|
|
req.TransferEncoding = []string{"chunked"}
|
|
}
|
|
|
|
req.ContentLength = p.Size
|
|
})
|
|
if err != nil {
|
|
return err
|
|
}
|
|
return nil
|
|
}
|
|
|
|
// Verify calls the verify handler on the LFS server
|
|
func (a *BasicTransferAdapter) Verify(ctx context.Context, l *Link, p Pointer) error {
|
|
b, err := json.Marshal(p)
|
|
if err != nil {
|
|
log.Error("Error encoding json: %v", err)
|
|
return err
|
|
}
|
|
|
|
_, err = a.performRequest(ctx, "POST", l, bytes.NewReader(b), func(req *http.Request) {
|
|
req.Header.Set("Content-Type", MediaType)
|
|
})
|
|
if err != nil {
|
|
return err
|
|
}
|
|
return nil
|
|
}
|
|
|
|
func (a *BasicTransferAdapter) performRequest(ctx context.Context, method string, l *Link, body io.Reader, callback func(*http.Request)) (*http.Response, error) {
|
|
log.Trace("Calling: %s %s", method, l.Href)
|
|
|
|
req, err := http.NewRequestWithContext(ctx, method, l.Href, body)
|
|
if err != nil {
|
|
log.Error("Error creating request: %v", err)
|
|
return nil, err
|
|
}
|
|
for key, value := range l.Header {
|
|
req.Header.Set(key, value)
|
|
}
|
|
req.Header.Set("Accept", MediaType)
|
|
|
|
if callback != nil {
|
|
callback(req)
|
|
}
|
|
|
|
res, err := a.client.Do(req)
|
|
if err != nil {
|
|
select {
|
|
case <-ctx.Done():
|
|
return res, ctx.Err()
|
|
default:
|
|
}
|
|
log.Error("Error while processing request: %v", err)
|
|
return res, err
|
|
}
|
|
|
|
if res.StatusCode != http.StatusOK {
|
|
return res, handleErrorResponse(res)
|
|
}
|
|
|
|
return res, nil
|
|
}
|
|
|
|
func handleErrorResponse(resp *http.Response) error {
|
|
defer resp.Body.Close()
|
|
|
|
er, err := decodeResponseError(resp.Body)
|
|
if err != nil {
|
|
return fmt.Errorf("Request failed with status %s", resp.Status)
|
|
}
|
|
log.Trace("ErrorRespone: %v", er)
|
|
return errors.New(er.Message)
|
|
}
|
|
|
|
func decodeResponseError(r io.Reader) (ErrorResponse, error) {
|
|
var er ErrorResponse
|
|
err := json.NewDecoder(r).Decode(&er)
|
|
if err != nil {
|
|
log.Error("Error decoding json: %v", err)
|
|
}
|
|
return er, err
|
|
}
|