rclone/backend/pikpak/helper.go
wiserain ce5024bf33
pikpak: improve upload reliability and resolve potential file conflicts
This attempts to resolve upload conflicts by implementing cancel/cleanup on failed
uploads

* fix panic error on defer cancel upload
* increase pacer min sleep from 10 to 100 ms
* stop using uploadByForm()
* introduce force sleep before and after async tasks
* use pacer's retry scheme instead of manual implementation

Fixes #7787
2024-06-10 18:08:07 +01:00

293 lines
8 KiB
Go

package pikpak
import (
"bytes"
"context"
"crypto/sha1"
"encoding/hex"
"errors"
"fmt"
"io"
"net/http"
"net/url"
"os"
"strconv"
"github.com/rclone/rclone/backend/pikpak/api"
"github.com/rclone/rclone/lib/rest"
)
// Globals
const (
cachePrefix = "rclone-pikpak-sha1sum-"
)
// requestDecompress requests decompress of compressed files
func (f *Fs) requestDecompress(ctx context.Context, file *api.File, password string) (info *api.DecompressResult, err error) {
req := &api.RequestDecompress{
Gcid: file.Hash,
Password: password,
FileID: file.ID,
Files: []*api.FileInArchive{},
DefaultParent: true,
}
opts := rest.Opts{
Method: "POST",
Path: "/decompress/v1/decompress",
}
var resp *http.Response
err = f.pacer.Call(func() (bool, error) {
resp, err = f.rst.CallJSON(ctx, &opts, &req, &info)
return f.shouldRetry(ctx, resp, err)
})
return
}
// getUserInfo gets UserInfo from API
func (f *Fs) getUserInfo(ctx context.Context) (info *api.User, err error) {
opts := rest.Opts{
Method: "GET",
RootURL: "https://user.mypikpak.com/v1/user/me",
}
var resp *http.Response
err = f.pacer.Call(func() (bool, error) {
resp, err = f.rst.CallJSON(ctx, &opts, nil, &info)
return f.shouldRetry(ctx, resp, err)
})
if err != nil {
return nil, fmt.Errorf("failed to get userinfo: %w", err)
}
return
}
// getVIPInfo gets VIPInfo from API
func (f *Fs) getVIPInfo(ctx context.Context) (info *api.VIP, err error) {
opts := rest.Opts{
Method: "GET",
RootURL: "https://api-drive.mypikpak.com/drive/v1/privilege/vip",
}
var resp *http.Response
err = f.pacer.Call(func() (bool, error) {
resp, err = f.rst.CallJSON(ctx, &opts, nil, &info)
return f.shouldRetry(ctx, resp, err)
})
if err != nil {
return nil, fmt.Errorf("failed to get vip info: %w", err)
}
return
}
// requestBatchAction requests batch actions to API
//
// action can be one of batch{Copy,Delete,Trash,Untrash}
func (f *Fs) requestBatchAction(ctx context.Context, action string, req *api.RequestBatch) (err error) {
opts := rest.Opts{
Method: "POST",
Path: "/drive/v1/files:" + action,
NoResponse: true, // Only returns `{"task_id":""}
}
var resp *http.Response
err = f.pacer.Call(func() (bool, error) {
resp, err = f.rst.CallJSON(ctx, &opts, &req, nil)
return f.shouldRetry(ctx, resp, err)
})
if err != nil {
return fmt.Errorf("batch action %q failed: %w", action, err)
}
return nil
}
// requestNewTask requests a new api.NewTask and returns api.Task
func (f *Fs) requestNewTask(ctx context.Context, req *api.RequestNewTask) (info *api.Task, err error) {
opts := rest.Opts{
Method: "POST",
Path: "/drive/v1/files",
}
var newTask api.NewTask
var resp *http.Response
err = f.pacer.Call(func() (bool, error) {
resp, err = f.rst.CallJSON(ctx, &opts, &req, &newTask)
return f.shouldRetry(ctx, resp, err)
})
if err != nil {
return nil, err
}
return newTask.Task, nil
}
// requestNewFile requests a new api.NewFile and returns api.File
func (f *Fs) requestNewFile(ctx context.Context, req *api.RequestNewFile) (info *api.NewFile, err error) {
opts := rest.Opts{
Method: "POST",
Path: "/drive/v1/files",
}
var resp *http.Response
err = f.pacer.Call(func() (bool, error) {
resp, err = f.rst.CallJSON(ctx, &opts, &req, &info)
return f.shouldRetry(ctx, resp, err)
})
return
}
// getFile gets api.File from API for the ID passed
// and returns rich information containing additional fields below
// * web_content_link
// * thumbnail_link
// * links
// * medias
func (f *Fs) getFile(ctx context.Context, ID string) (info *api.File, err error) {
opts := rest.Opts{
Method: "GET",
Path: "/drive/v1/files/" + ID,
}
var resp *http.Response
err = f.pacer.Call(func() (bool, error) {
resp, err = f.rst.CallJSON(ctx, &opts, nil, &info)
if err == nil && !info.Links.ApplicationOctetStream.Valid() {
return true, errors.New("no link")
}
return f.shouldRetry(ctx, resp, err)
})
return
}
// patchFile updates attributes of the file by ID
//
// currently known patchable fields are
// * name
func (f *Fs) patchFile(ctx context.Context, ID string, req *api.File) (info *api.File, err error) {
opts := rest.Opts{
Method: "PATCH",
Path: "/drive/v1/files/" + ID,
}
var resp *http.Response
err = f.pacer.Call(func() (bool, error) {
resp, err = f.rst.CallJSON(ctx, &opts, &req, &info)
return f.shouldRetry(ctx, resp, err)
})
return
}
// getTask gets api.Task from API for the ID passed
func (f *Fs) getTask(ctx context.Context, ID string, checkPhase bool) (info *api.Task, err error) {
opts := rest.Opts{
Method: "GET",
Path: "/drive/v1/tasks/" + ID,
}
var resp *http.Response
err = f.pacer.Call(func() (bool, error) {
resp, err = f.rst.CallJSON(ctx, &opts, nil, &info)
if checkPhase {
if err == nil && info.Phase != api.PhaseTypeComplete {
// could be pending right after file is created/uploaded.
return true, errors.New(info.Phase)
}
}
return f.shouldRetry(ctx, resp, err)
})
return
}
// deleteTask remove a task having the specified ID
func (f *Fs) deleteTask(ctx context.Context, ID string, deleteFiles bool) (err error) {
params := url.Values{}
params.Set("delete_files", strconv.FormatBool(deleteFiles))
params.Set("task_ids", ID)
opts := rest.Opts{
Method: "DELETE",
Path: "/drive/v1/tasks",
Parameters: params,
NoResponse: true,
}
var resp *http.Response
err = f.pacer.Call(func() (bool, error) {
resp, err = f.rst.CallJSON(ctx, &opts, nil, nil)
return f.shouldRetry(ctx, resp, err)
})
return
}
// getAbout gets drive#quota information from server
func (f *Fs) getAbout(ctx context.Context) (info *api.About, err error) {
opts := rest.Opts{
Method: "GET",
Path: "/drive/v1/about",
}
var resp *http.Response
err = f.pacer.Call(func() (bool, error) {
resp, err = f.rst.CallJSON(ctx, &opts, nil, &info)
return f.shouldRetry(ctx, resp, err)
})
return
}
// requestShare returns information about sharable links
func (f *Fs) requestShare(ctx context.Context, req *api.RequestShare) (info *api.Share, err error) {
opts := rest.Opts{
Method: "POST",
Path: "/drive/v1/share",
}
var resp *http.Response
err = f.pacer.Call(func() (bool, error) {
resp, err = f.rst.CallJSON(ctx, &opts, &req, &info)
return f.shouldRetry(ctx, resp, err)
})
return
}
// Read the sha1 of in returning a reader which will read the same contents
//
// The cleanup function should be called when out is finished with
// regardless of whether this function returned an error or not.
func readSHA1(in io.Reader, size, threshold int64) (sha1sum string, out io.Reader, cleanup func(), err error) {
// we need an SHA1
hash := sha1.New()
// use the teeReader to write to the local file AND calculate the SHA1 while doing so
teeReader := io.TeeReader(in, hash)
// nothing to clean up by default
cleanup = func() {}
// don't cache small files on disk to reduce wear of the disk
if size > threshold {
var tempFile *os.File
// create the cache file
tempFile, err = os.CreateTemp("", cachePrefix)
if err != nil {
return
}
_ = os.Remove(tempFile.Name()) // Delete the file - may not work on Windows
// clean up the file after we are done downloading
cleanup = func() {
// the file should normally already be close, but just to make sure
_ = tempFile.Close()
_ = os.Remove(tempFile.Name()) // delete the cache file after we are done - may be deleted already
}
// copy the ENTIRE file to disc and calculate the SHA1 in the process
if _, err = io.Copy(tempFile, teeReader); err != nil {
return
}
// jump to the start of the local file so we can pass it along
if _, err = tempFile.Seek(0, 0); err != nil {
return
}
// replace the already read source with a reader of our cached file
out = tempFile
} else {
// that's a small file, just read it into memory
var inData []byte
inData, err = io.ReadAll(teeReader)
if err != nil {
return
}
// set the reader to our read memory block
out = bytes.NewReader(inData)
}
return hex.EncodeToString(hash.Sum(nil)), out, cleanup, nil
}