mirror of
https://github.com/go-gitea/gitea.git
synced 2024-12-06 02:29:37 +08:00
e81ccc406b
Change all license headers to comply with REUSE specification. Fix #16132 Co-authored-by: flynnnnnnnnnn <flynnnnnnnnnn@github> Co-authored-by: John Olheiser <john.olheiser@gmail.com>
222 lines
4.8 KiB
Go
222 lines
4.8 KiB
Go
// Copyright 2021 The Gitea Authors. All rights reserved.
|
|
// SPDX-License-Identifier: MIT
|
|
|
|
package lfs
|
|
|
|
import (
|
|
"bytes"
|
|
"context"
|
|
"errors"
|
|
"fmt"
|
|
"net/http"
|
|
"net/url"
|
|
"strings"
|
|
|
|
"code.gitea.io/gitea/modules/json"
|
|
"code.gitea.io/gitea/modules/log"
|
|
"code.gitea.io/gitea/modules/proxy"
|
|
)
|
|
|
|
const batchSize = 20
|
|
|
|
// HTTPClient is used to communicate with the LFS server
|
|
// https://github.com/git-lfs/git-lfs/blob/main/docs/api/batch.md
|
|
type HTTPClient struct {
|
|
client *http.Client
|
|
endpoint string
|
|
transfers map[string]TransferAdapter
|
|
}
|
|
|
|
// BatchSize returns the preferred size of batchs to process
|
|
func (c *HTTPClient) BatchSize() int {
|
|
return batchSize
|
|
}
|
|
|
|
func newHTTPClient(endpoint *url.URL, httpTransport *http.Transport) *HTTPClient {
|
|
if httpTransport == nil {
|
|
httpTransport = &http.Transport{
|
|
Proxy: proxy.Proxy(),
|
|
}
|
|
}
|
|
|
|
hc := &http.Client{
|
|
Transport: httpTransport,
|
|
}
|
|
|
|
client := &HTTPClient{
|
|
client: hc,
|
|
endpoint: strings.TrimSuffix(endpoint.String(), "/"),
|
|
transfers: make(map[string]TransferAdapter),
|
|
}
|
|
|
|
basic := &BasicTransferAdapter{hc}
|
|
|
|
client.transfers[basic.Name()] = basic
|
|
|
|
return client
|
|
}
|
|
|
|
func (c *HTTPClient) transferNames() []string {
|
|
keys := make([]string, len(c.transfers))
|
|
|
|
i := 0
|
|
for k := range c.transfers {
|
|
keys[i] = k
|
|
i++
|
|
}
|
|
|
|
return keys
|
|
}
|
|
|
|
func (c *HTTPClient) batch(ctx context.Context, operation string, objects []Pointer) (*BatchResponse, error) {
|
|
log.Trace("BATCH operation with objects: %v", objects)
|
|
|
|
url := fmt.Sprintf("%s/objects/batch", c.endpoint)
|
|
|
|
request := &BatchRequest{operation, c.transferNames(), nil, objects}
|
|
|
|
payload := new(bytes.Buffer)
|
|
err := json.NewEncoder(payload).Encode(request)
|
|
if err != nil {
|
|
log.Error("Error encoding json: %v", err)
|
|
return nil, err
|
|
}
|
|
|
|
log.Trace("Calling: %s", url)
|
|
|
|
req, err := http.NewRequestWithContext(ctx, "POST", url, payload)
|
|
if err != nil {
|
|
log.Error("Error creating request: %v", err)
|
|
return nil, err
|
|
}
|
|
req.Header.Set("Content-type", MediaType)
|
|
req.Header.Set("Accept", MediaType)
|
|
|
|
res, err := c.client.Do(req)
|
|
if err != nil {
|
|
select {
|
|
case <-ctx.Done():
|
|
return nil, ctx.Err()
|
|
default:
|
|
}
|
|
log.Error("Error while processing request: %v", err)
|
|
return nil, err
|
|
}
|
|
defer res.Body.Close()
|
|
|
|
if res.StatusCode != http.StatusOK {
|
|
return nil, fmt.Errorf("Unexpected server response: %s", res.Status)
|
|
}
|
|
|
|
var response BatchResponse
|
|
err = json.NewDecoder(res.Body).Decode(&response)
|
|
if err != nil {
|
|
log.Error("Error decoding json: %v", err)
|
|
return nil, err
|
|
}
|
|
|
|
if len(response.Transfer) == 0 {
|
|
response.Transfer = "basic"
|
|
}
|
|
|
|
return &response, nil
|
|
}
|
|
|
|
// Download reads the specific LFS object from the LFS server
|
|
func (c *HTTPClient) Download(ctx context.Context, objects []Pointer, callback DownloadCallback) error {
|
|
return c.performOperation(ctx, objects, callback, nil)
|
|
}
|
|
|
|
// Upload sends the specific LFS object to the LFS server
|
|
func (c *HTTPClient) Upload(ctx context.Context, objects []Pointer, callback UploadCallback) error {
|
|
return c.performOperation(ctx, objects, nil, callback)
|
|
}
|
|
|
|
func (c *HTTPClient) performOperation(ctx context.Context, objects []Pointer, dc DownloadCallback, uc UploadCallback) error {
|
|
if len(objects) == 0 {
|
|
return nil
|
|
}
|
|
|
|
operation := "download"
|
|
if uc != nil {
|
|
operation = "upload"
|
|
}
|
|
|
|
result, err := c.batch(ctx, operation, objects)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
|
|
transferAdapter, ok := c.transfers[result.Transfer]
|
|
if !ok {
|
|
return fmt.Errorf("TransferAdapter not found: %s", result.Transfer)
|
|
}
|
|
|
|
for _, object := range result.Objects {
|
|
if object.Error != nil {
|
|
objectError := errors.New(object.Error.Message)
|
|
log.Trace("Error on object %v: %v", object.Pointer, objectError)
|
|
if uc != nil {
|
|
if _, err := uc(object.Pointer, objectError); err != nil {
|
|
return err
|
|
}
|
|
} else {
|
|
if err := dc(object.Pointer, nil, objectError); err != nil {
|
|
return err
|
|
}
|
|
}
|
|
continue
|
|
}
|
|
|
|
if uc != nil {
|
|
if len(object.Actions) == 0 {
|
|
log.Trace("%v already present on server", object.Pointer)
|
|
continue
|
|
}
|
|
|
|
link, ok := object.Actions["upload"]
|
|
if !ok {
|
|
log.Debug("%+v", object)
|
|
return errors.New("Missing action 'upload'")
|
|
}
|
|
|
|
content, err := uc(object.Pointer, nil)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
|
|
err = transferAdapter.Upload(ctx, link, object.Pointer, content)
|
|
|
|
content.Close()
|
|
|
|
if err != nil {
|
|
return err
|
|
}
|
|
|
|
link, ok = object.Actions["verify"]
|
|
if ok {
|
|
if err := transferAdapter.Verify(ctx, link, object.Pointer); err != nil {
|
|
return err
|
|
}
|
|
}
|
|
} else {
|
|
link, ok := object.Actions["download"]
|
|
if !ok {
|
|
log.Debug("%+v", object)
|
|
return errors.New("Missing action 'download'")
|
|
}
|
|
|
|
content, err := transferAdapter.Download(ctx, link)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
|
|
if err := dc(object.Pointer, content, nil); err != nil {
|
|
return err
|
|
}
|
|
}
|
|
}
|
|
|
|
return nil
|
|
}
|