// Package drive interfaces with the Google Drive object storage system package drive // FIXME need to deal with some corner cases // * multiple files with the same name // * files can be in multiple directories // * can have directory loops // * files with / in name import ( "fmt" "io" "log" "net/http" "strings" "time" "golang.org/x/oauth2" "golang.org/x/oauth2/google" "google.golang.org/api/drive/v2" "google.golang.org/api/googleapi" "github.com/ncw/rclone/dircache" "github.com/ncw/rclone/fs" "github.com/ncw/rclone/oauthutil" "github.com/ncw/rclone/pacer" "github.com/spf13/pflag" ) // Constants const ( rcloneClientID = "202264815644.apps.googleusercontent.com" rcloneEncryptedClientSecret = "8p/yms3OlNXE9OTDl/HLypf9gdiJ5cT3" driveFolderType = "application/vnd.google-apps.folder" timeFormatIn = time.RFC3339 timeFormatOut = "2006-01-02T15:04:05.000000000Z07:00" minSleep = 10 * time.Millisecond maxSleep = 2000 * time.Millisecond decayConstant = 0 // bigger for slower decay, exponential attackConstant = 0 // bigger for slower attack, exponential defaultExtensions = "docx,xlsx,pptx,svg" ) // Globals var ( // Flags driveFullList = pflag.BoolP("drive-full-list", "", false, "Use a full listing for directory list. More data but usually quicker. (obsolete)") driveAuthOwnerOnly = pflag.BoolP("drive-auth-owner-only", "", false, "Only consider files owned by the authenticated user. Requires drive-full-list.") driveUseTrash = pflag.BoolP("drive-use-trash", "", false, "Send files to the trash instead of deleting permanently.") driveExtensions = pflag.StringP("drive-formats", "", defaultExtensions, "Comma separated list of preferred formats for downloading Google docs.") // chunkSize is the size of the chunks created during a resumable upload and should be a power of two. // 1<<18 is the minimum size supported by the Google uploader, and there is no maximum. chunkSize = fs.SizeSuffix(8 * 1024 * 1024) driveUploadCutoff = chunkSize // Description of how to auth for this app driveConfig = &oauth2.Config{ Scopes: []string{"https://www.googleapis.com/auth/drive"}, Endpoint: google.Endpoint, ClientID: rcloneClientID, ClientSecret: fs.Reveal(rcloneEncryptedClientSecret), RedirectURL: oauthutil.TitleBarRedirectURL, } mimeTypeToExtension = map[string]string{ "application/msword": "doc", "application/pdf": "pdf", "application/rtf": "rtf", "application/vnd.ms-excel": "xls", "application/vnd.oasis.opendocument.spreadsheet": "ods", "application/vnd.oasis.opendocument.text": "odt", "application/vnd.openxmlformats-officedocument.presentationml.presentation": "pptx", "application/vnd.openxmlformats-officedocument.spreadsheetml.sheet": "xlsx", "application/vnd.openxmlformats-officedocument.wordprocessingml.document": "docx", "application/x-vnd.oasis.opendocument.spreadsheet": "ods", "application/zip": "zip", "image/jpeg": "jpg", "image/png": "png", "image/svg+xml": "svg", "text/csv": "csv", "text/html": "html", "text/plain": "txt", } extensionToMimeType map[string]string ) // Register with Fs func init() { fs.Register(&fs.RegInfo{ Name: "drive", Description: "Google Drive", NewFs: NewFs, Config: func(name string) { err := oauthutil.Config("drive", name, driveConfig) if err != nil { log.Fatalf("Failed to configure token: %v", err) } }, Options: []fs.Option{{ Name: fs.ConfigClientID, Help: "Google Application Client Id - leave blank normally.", }, { Name: fs.ConfigClientSecret, Help: "Google Application Client Secret - leave blank normally.", }}, }) pflag.VarP(&driveUploadCutoff, "drive-upload-cutoff", "", "Cutoff for switching to chunked upload") pflag.VarP(&chunkSize, "drive-chunk-size", "", "Upload chunk size. Must a power of 2 >= 256k.") // Invert mimeTypeToExtension extensionToMimeType = make(map[string]string, len(mimeTypeToExtension)) for mimeType, extension := range mimeTypeToExtension { extensionToMimeType[extension] = mimeType } } // Fs represents a remote drive server type Fs struct { name string // name of this remote svc *drive.Service // the connection to the drive server root string // the path we are working on client *http.Client // authorized client about *drive.About // information about the drive, including the root dirCache *dircache.DirCache // Map of directory path to directory id pacer *pacer.Pacer // To pace the API calls extensions []string // preferred extensions to download docs } // Object describes a drive object type Object struct { fs *Fs // what this object is part of remote string // The remote path id string // Drive Id of this object url string // Download URL of this object md5sum string // md5sum of the object bytes int64 // size of the object modifiedDate string // RFC3339 time it was last modified isDocument bool // if set this is a Google doc } // ------------------------------------------------------------ // Name of the remote (as passed into NewFs) func (f *Fs) Name() string { return f.name } // Root of the remote (as passed into NewFs) func (f *Fs) Root() string { return f.root } // String converts this Fs to a string func (f *Fs) String() string { return fmt.Sprintf("Google drive root '%s'", f.root) } // shouldRetry determines whehter a given err rates being retried func shouldRetry(err error) (again bool, errOut error) { again = false if err != nil { if fs.ShouldRetry(err) { again = true } else { switch gerr := err.(type) { case *googleapi.Error: if gerr.Code >= 500 && gerr.Code < 600 { // All 5xx errors should be retried again = true } else if len(gerr.Errors) > 0 { reason := gerr.Errors[0].Reason if reason == "rateLimitExceeded" || reason == "userRateLimitExceeded" { again = true } } } } } return again, err } // parseParse parses a drive 'url' func parseDrivePath(path string) (root string, err error) { root = strings.Trim(path, "/") return } // User function to process a File item from listAll // // Should return true to finish processing type listAllFn func(*drive.File) bool // Lists the directory required calling the user function on each item found // // If the user fn ever returns true then it early exits with found = true // // Search params: https://developers.google.com/drive/search-parameters func (f *Fs) listAll(dirID string, title string, directoriesOnly bool, filesOnly bool, fn listAllFn) (found bool, err error) { query := fmt.Sprintf("trashed=false") if dirID != "" { query += fmt.Sprintf(" and '%s' in parents", dirID) } if title != "" { // Escaping the backslash isn't documented but seems to work title = strings.Replace(title, `\`, `\\`, -1) title = strings.Replace(title, `'`, `\'`, -1) query += fmt.Sprintf(" and title='%s'", title) } if directoriesOnly { query += fmt.Sprintf(" and mimeType='%s'", driveFolderType) } if filesOnly { query += fmt.Sprintf(" and mimeType!='%s'", driveFolderType) } // fmt.Printf("listAll Query = %q\n", query) list := f.svc.Files.List().Q(query).MaxResults(1000) OUTER: for { var files *drive.FileList err = f.pacer.Call(func() (bool, error) { files, err = list.Do() return shouldRetry(err) }) if err != nil { return false, fmt.Errorf("Couldn't list directory: %s", err) } for _, item := range files.Items { if fn(item) { found = true break OUTER } } if files.NextPageToken == "" { break } list.PageToken(files.NextPageToken) } return } // Returns true of x is a power of 2 or zero func isPowerOfTwo(x int64) bool { switch { case x == 0: return true case x < 0: return false default: return (x & (x - 1)) == 0 } } // parseExtensions parses drive export extensions from a string func (f *Fs) parseExtensions(extensions string) error { for _, extension := range strings.Split(extensions, ",") { extension = strings.ToLower(strings.TrimSpace(extension)) if _, found := extensionToMimeType[extension]; !found { return fmt.Errorf("Couldn't find mime type for extension %q", extension) } found := false for _, existingExtension := range f.extensions { if extension == existingExtension { found = true break } } if !found { f.extensions = append(f.extensions, extension) } } return nil } // NewFs contstructs an Fs from the path, container:path func NewFs(name, path string) (fs.Fs, error) { if !isPowerOfTwo(int64(chunkSize)) { return nil, fmt.Errorf("drive: chunk size %v isn't a power of two", chunkSize) } if chunkSize < 256*1024 { return nil, fmt.Errorf("drive: chunk size can't be less than 256k - was %v", chunkSize) } oAuthClient, err := oauthutil.NewClient(name, driveConfig) if err != nil { log.Fatalf("Failed to configure drive: %v", err) } root, err := parseDrivePath(path) if err != nil { return nil, err } f := &Fs{ name: name, root: root, pacer: pacer.New().SetMinSleep(minSleep).SetMaxSleep(maxSleep).SetDecayConstant(decayConstant).SetAttackConstant(attackConstant), } // Create a new authorized Drive client. f.client = oAuthClient f.svc, err = drive.New(f.client) if err != nil { return nil, fmt.Errorf("Couldn't create Drive client: %s", err) } // Read About so we know the root path err = f.pacer.Call(func() (bool, error) { f.about, err = f.svc.About.Get().Do() return shouldRetry(err) }) if err != nil { return nil, fmt.Errorf("Couldn't read info about Drive: %s", err) } f.dirCache = dircache.New(root, f.about.RootFolderId, f) // Parse extensions err = f.parseExtensions(*driveExtensions) if err != nil { return nil, err } err = f.parseExtensions(defaultExtensions) // make sure there are some sensible ones on there if err != nil { return nil, err } // Find the current root err = f.dirCache.FindRoot(false) if err != nil { // Assume it is a file newRoot, remote := dircache.SplitPath(root) newF := *f newF.dirCache = dircache.New(newRoot, f.about.RootFolderId, &newF) newF.root = newRoot // Make new Fs which is the parent err = newF.dirCache.FindRoot(false) if err != nil { // No root so return old f return f, nil } obj, err := newF.newFsObjectWithInfoErr(remote, nil) if err != nil { // File doesn't exist so return old f return f, nil } // return a Fs Limited to this object return fs.NewLimited(&newF, obj), nil } // fmt.Printf("Root id %s", f.dirCache.RootID()) return f, nil } // Return an FsObject from a path func (f *Fs) newFsObjectWithInfoErr(remote string, info *drive.File) (fs.Object, error) { fs := &Object{ fs: f, remote: remote, } if info != nil { fs.setMetaData(info) } else { err := fs.readMetaData() // reads info and meta, returning an error if err != nil { // logged already fs.Debug("Failed to read info: %s", err) return nil, err } } return fs, nil } // Return an FsObject from a path // // May return nil if an error occurred func (f *Fs) newFsObjectWithInfo(remote string, info *drive.File) fs.Object { fs, _ := f.newFsObjectWithInfoErr(remote, info) // Errors have already been logged return fs } // NewFsObject returns an FsObject from a path // // May return nil if an error occurred func (f *Fs) NewFsObject(remote string) fs.Object { return f.newFsObjectWithInfo(remote, nil) } // FindLeaf finds a directory of name leaf in the folder with ID pathID func (f *Fs) FindLeaf(pathID, leaf string) (pathIDOut string, found bool, err error) { // Find the leaf in pathID found, err = f.listAll(pathID, leaf, true, false, func(item *drive.File) bool { if item.Title == leaf { pathIDOut = item.Id return true } return false }) return pathIDOut, found, err } // CreateDir makes a directory with pathID as parent and name leaf func (f *Fs) CreateDir(pathID, leaf string) (newID string, err error) { // fmt.Println("Making", path) // Define the metadata for the directory we are going to create. createInfo := &drive.File{ Title: leaf, Description: leaf, MimeType: driveFolderType, Parents: []*drive.ParentReference{{Id: pathID}}, } var info *drive.File err = f.pacer.Call(func() (bool, error) { info, err = f.svc.Files.Insert(createInfo).Do() return shouldRetry(err) }) if err != nil { return "", err } return info.Id, nil } // isAuthOwned checks if any of the item owners is the authenticated owner func isAuthOwned(item *drive.File) bool { for _, owner := range item.Owners { if owner.IsAuthenticatedUser { return true } } return false } // findExportFormat works out the optimum extension and download URL // for this item. // // Look through the extensions and find the first format that can be // converted. If none found then return "", "" func (f *Fs) findExportFormat(filepath string, item *drive.File) (extension, link string) { // Warn about unknown export formats for mimeType := range item.ExportLinks { if _, ok := mimeTypeToExtension[mimeType]; !ok { fs.Debug(filepath, "Unknown export type %q - ignoring", mimeType) } } // Find the first export format we can for _, extension := range f.extensions { mimeType := extensionToMimeType[extension] if link, ok := item.ExportLinks[mimeType]; ok { return extension, link } } // else return empty return "", "" } // ListDir reads the directory specified by the job into out, returning any more jobs func (f *Fs) ListDir(out fs.ListOpts, job dircache.ListDirJob) (jobs []dircache.ListDirJob, err error) { fs.Debug(f, "Reading %q", job.Path) _, err = f.listAll(job.DirID, "", false, false, func(item *drive.File) bool { remote := job.Path + item.Title switch { case *driveAuthOwnerOnly && !isAuthOwned(item): // ignore object or directory case item.MimeType == driveFolderType: if out.IncludeDirectory(remote) { dir := &fs.Dir{ Name: item.Title, Bytes: -1, Count: -1, } dir.When, _ = time.Parse(timeFormatIn, item.ModifiedDate) if out.AddDir(dir) { return true } if job.Depth > 0 { jobs = append(jobs, dircache.ListDirJob{DirID: item.Id, Path: remote + "/", Depth: job.Depth - 1}) } } case item.Md5Checksum != "": // If item has MD5 sum it is a file stored on drive if o := f.newFsObjectWithInfo(remote, item); o != nil { if out.Add(o) { return true } } case len(item.ExportLinks) != 0: // If item has export links then it is a google doc extension, link := f.findExportFormat(remote, item) if extension == "" { fs.Debug(remote, "No export formats found") } else { if o := f.newFsObjectWithInfo(remote+"."+extension, item); o != nil { obj := o.(*Object) obj.isDocument = true obj.url = link obj.bytes = -1 if out.Add(o) { return true } } } default: fs.Debug(remote, "Ignoring unknown object") } return false }) fs.Debug(f, "Finished reading %q", job.Path) return jobs, err } // List walks the path returning files and directories to out func (f *Fs) List(out fs.ListOpts) { f.dirCache.List(f, out) } // Creates a drive.File info from the parameters passed in and a half // finished Object which must have setMetaData called on it // // Used to create new objects func (f *Fs) createFileInfo(remote string, modTime time.Time, size int64) (*Object, *drive.File, error) { // Temporary Object under construction o := &Object{ fs: f, remote: remote, bytes: size, } leaf, directoryID, err := f.dirCache.FindPath(remote, true) if err != nil { return nil, nil, err } // Define the metadata for the file we are going to create. createInfo := &drive.File{ Title: leaf, Description: leaf, Parents: []*drive.ParentReference{{Id: directoryID}}, MimeType: fs.MimeType(o), ModifiedDate: modTime.Format(timeFormatOut), } return o, createInfo, nil } // Put the object // // This assumes that the object doesn't not already exists - if you // call it when it does exist then it will create a duplicate. Call // object.Update() in this case. // // Copy the reader in to the new object which is returned // // The new object may have been created if an error is returned func (f *Fs) Put(in io.Reader, src fs.ObjectInfo) (fs.Object, error) { remote := src.Remote() size := src.Size() modTime := src.ModTime() o, createInfo, err := f.createFileInfo(remote, modTime, size) if err != nil { return nil, err } var info *drive.File if size == 0 || size < int64(driveUploadCutoff) { // Make the API request to upload metadata and file data. // Don't retry, return a retry error instead err = f.pacer.CallNoRetry(func() (bool, error) { info, err = f.svc.Files.Insert(createInfo).Media(in).Do() return shouldRetry(err) }) if err != nil { return o, err } } else { // Upload the file in chunks info, err = f.Upload(in, size, createInfo.MimeType, createInfo, remote) if err != nil { return o, err } } o.setMetaData(info) return o, nil } // Mkdir creates the container if it doesn't exist func (f *Fs) Mkdir() error { return f.dirCache.FindRoot(true) } // Rmdir deletes the container // // Returns an error if it isn't empty func (f *Fs) Rmdir() error { err := f.dirCache.FindRoot(false) if err != nil { return err } var children *drive.ChildList err = f.pacer.Call(func() (bool, error) { children, err = f.svc.Children.List(f.dirCache.RootID()).MaxResults(10).Do() return shouldRetry(err) }) if err != nil { return err } if len(children.Items) > 0 { return fmt.Errorf("Directory not empty: %#v", children.Items) } // Delete the directory if it isn't the root if f.root != "" { err = f.pacer.Call(func() (bool, error) { if *driveUseTrash { _, err = f.svc.Files.Trash(f.dirCache.RootID()).Do() } else { err = f.svc.Files.Delete(f.dirCache.RootID()).Do() } return shouldRetry(err) }) if err != nil { return err } } f.dirCache.ResetRoot() return nil } // Precision of the object storage system func (f *Fs) Precision() time.Duration { return time.Millisecond } // Copy src to this remote using server side copy operations. // // This is stored with the remote path given // // It returns the destination Object and a possible error // // Will only be called if src.Fs().Name() == f.Name() // // If it isn't possible then return fs.ErrorCantCopy func (f *Fs) Copy(src fs.Object, remote string) (fs.Object, error) { srcObj, ok := src.(*Object) if !ok { fs.Debug(src, "Can't copy - not same remote type") return nil, fs.ErrorCantCopy } if srcObj.isDocument { return nil, fmt.Errorf("Can't copy a Google document") } o, createInfo, err := f.createFileInfo(remote, srcObj.ModTime(), srcObj.bytes) if err != nil { return nil, err } var info *drive.File err = o.fs.pacer.Call(func() (bool, error) { info, err = o.fs.svc.Files.Copy(srcObj.id, createInfo).Do() return shouldRetry(err) }) if err != nil { return nil, err } o.setMetaData(info) return o, nil } // Purge deletes all the files and the container // // Optional interface: Only implement this if you have a way of // deleting all the files quicker than just running Remove() on the // result of List() func (f *Fs) Purge() error { if f.root == "" { return fmt.Errorf("Can't purge root directory") } err := f.dirCache.FindRoot(false) if err != nil { return err } err = f.pacer.Call(func() (bool, error) { if *driveUseTrash { _, err = f.svc.Files.Trash(f.dirCache.RootID()).Do() } else { err = f.svc.Files.Delete(f.dirCache.RootID()).Do() } return shouldRetry(err) }) f.dirCache.ResetRoot() if err != nil { return err } return nil } // Move src to this remote using server side move operations. // // This is stored with the remote path given // // It returns the destination Object and a possible error // // Will only be called if src.Fs().Name() == f.Name() // // If it isn't possible then return fs.ErrorCantMove func (f *Fs) Move(src fs.Object, remote string) (fs.Object, error) { srcObj, ok := src.(*Object) if !ok { fs.Debug(src, "Can't move - not same remote type") return nil, fs.ErrorCantMove } if srcObj.isDocument { return nil, fmt.Errorf("Can't move a Google document") } // Temporary FsObject under construction dstObj, dstInfo, err := f.createFileInfo(remote, srcObj.ModTime(), srcObj.bytes) if err != nil { return nil, err } // Do the move var info *drive.File err = f.pacer.Call(func() (bool, error) { info, err = f.svc.Files.Patch(srcObj.id, dstInfo).SetModifiedDate(true).Do() return shouldRetry(err) }) if err != nil { return nil, err } dstObj.setMetaData(info) return dstObj, nil } // DirMove moves src directory to this remote using server side move // operations. // // Will only be called if src.Fs().Name() == f.Name() // // If it isn't possible then return fs.ErrorCantDirMove // // If destination exists then return fs.ErrorDirExists func (f *Fs) DirMove(src fs.Fs) error { srcFs, ok := src.(*Fs) if !ok { fs.Debug(srcFs, "Can't move directory - not same remote type") return fs.ErrorCantDirMove } // Check if destination exists f.dirCache.ResetRoot() err := f.dirCache.FindRoot(false) if err == nil { return fs.ErrorDirExists } // Find ID of parent leaf, directoryID, err := f.dirCache.FindPath(f.root, true) if err != nil { return err } // Do the move patch := drive.File{ Title: leaf, Parents: []*drive.ParentReference{{Id: directoryID}}, } err = f.pacer.Call(func() (bool, error) { _, err = f.svc.Files.Patch(srcFs.dirCache.RootID(), &patch).Do() return shouldRetry(err) }) if err != nil { return err } srcFs.dirCache.ResetRoot() return nil } // Hashes returns the supported hash sets. func (f *Fs) Hashes() fs.HashSet { return fs.HashSet(fs.HashMD5) } // ------------------------------------------------------------ // Fs returns the parent Fs func (o *Object) Fs() fs.Info { return o.fs } // Return a string version func (o *Object) String() string { if o == nil { return "" } return o.remote } // Remote returns the remote path func (o *Object) Remote() string { return o.remote } // Hash returns the Md5sum of an object returning a lowercase hex string func (o *Object) Hash(t fs.HashType) (string, error) { if t != fs.HashMD5 { return "", fs.ErrHashUnsupported } return o.md5sum, nil } // Size returns the size of an object in bytes func (o *Object) Size() int64 { if o.isDocument && o.bytes < 0 { // If it is a google doc then we must HEAD it to see // how big it is res, err := o.httpResponse("HEAD") if err != nil { fs.ErrorLog(o, "Error reading size: %v", err) return 0 } _ = res.Body.Close() o.bytes = res.ContentLength // fs.Debug(o, "Read size of document: %v", o.bytes) } return o.bytes } // setMetaData sets the fs data from a drive.File func (o *Object) setMetaData(info *drive.File) { o.id = info.Id o.url = info.DownloadUrl o.md5sum = strings.ToLower(info.Md5Checksum) o.bytes = info.FileSize o.modifiedDate = info.ModifiedDate } // readMetaData gets the info if it hasn't already been fetched func (o *Object) readMetaData() (err error) { if o.id != "" { return nil } leaf, directoryID, err := o.fs.dirCache.FindPath(o.remote, false) if err != nil { return err } found, err := o.fs.listAll(directoryID, leaf, false, true, func(item *drive.File) bool { if item.Title == leaf { o.setMetaData(item) return true } return false }) if err != nil { return err } if !found { fs.Debug(o, "Couldn't find object") return fmt.Errorf("Couldn't find object") } return nil } // ModTime returns the modification time of the object // // // It attempts to read the objects mtime and if that isn't present the // LastModified returned in the http headers func (o *Object) ModTime() time.Time { err := o.readMetaData() if err != nil { fs.Log(o, "Failed to read metadata: %s", err) return time.Now() } modTime, err := time.Parse(timeFormatIn, o.modifiedDate) if err != nil { fs.Log(o, "Failed to read mtime from object: %s", err) return time.Now() } return modTime } // SetModTime sets the modification time of the drive fs object func (o *Object) SetModTime(modTime time.Time) error { err := o.readMetaData() if err != nil { return err } // New metadata updateInfo := &drive.File{ ModifiedDate: modTime.Format(timeFormatOut), } // Set modified date var info *drive.File err = o.fs.pacer.Call(func() (bool, error) { info, err = o.fs.svc.Files.Update(o.id, updateInfo).SetModifiedDate(true).Do() return shouldRetry(err) }) if err != nil { return err } // Update info from read data o.setMetaData(info) return nil } // Storable returns a boolean as to whether this object is storable func (o *Object) Storable() bool { return true } // httpResponse gets an http.Response object for the object o.url // using the method passed in func (o *Object) httpResponse(method string) (res *http.Response, err error) { if o.url == "" { return nil, fmt.Errorf("Forbidden to download - check sharing permission") } req, err := http.NewRequest(method, o.url, nil) if err != nil { return nil, err } req.Header.Set("User-Agent", fs.UserAgent) err = o.fs.pacer.Call(func() (bool, error) { res, err = o.fs.client.Do(req) return shouldRetry(err) }) if err != nil { return nil, err } return res, nil } // openFile represents an Object open for reading type openFile struct { o *Object // Object we are reading for in io.ReadCloser // reading from here bytes int64 // number of bytes read on this connection eof bool // whether we have read end of file } // Read bytes from the object - see io.Reader func (file *openFile) Read(p []byte) (n int, err error) { n, err = file.in.Read(p) file.bytes += int64(n) if err == io.EOF { file.eof = true } return } // Close the object and update bytes read func (file *openFile) Close() (err error) { // If end of file, update bytes read if file.eof { // fs.Debug(file.o, "Updating size of doc after download to %v", file.bytes) file.o.bytes = file.bytes } return file.in.Close() } // Check it satisfies the interfaces var _ io.ReadCloser = &openFile{} // Open an object for read func (o *Object) Open() (in io.ReadCloser, err error) { res, err := o.httpResponse("GET") if err != nil { return nil, err } if res.StatusCode != 200 { _ = res.Body.Close() // ignore error return nil, fmt.Errorf("Bad response: %d: %s", res.StatusCode, res.Status) } // If it is a document, update the size with what we are // reading as it can change from the HEAD in the listing to // this GET. This stops rclone marking the transfer as // corrupted. if o.isDocument { return &openFile{o: o, in: res.Body}, nil } return res.Body, nil } // Update the already existing object // // Copy the reader into the object updating modTime and size // // The new object may have been created if an error is returned func (o *Object) Update(in io.Reader, src fs.ObjectInfo) error { size := src.Size() modTime := src.ModTime() if o.isDocument { return fmt.Errorf("Can't update a google document") } updateInfo := &drive.File{ Id: o.id, MimeType: fs.MimeType(o), ModifiedDate: modTime.Format(timeFormatOut), } // Make the API request to upload metadata and file data. var err error var info *drive.File if size == 0 || size < int64(driveUploadCutoff) { // Don't retry, return a retry error instead err = o.fs.pacer.CallNoRetry(func() (bool, error) { info, err = o.fs.svc.Files.Update(updateInfo.Id, updateInfo).SetModifiedDate(true).Media(in).Do() return shouldRetry(err) }) if err != nil { return err } } else { // Upload the file in chunks info, err = o.fs.Upload(in, size, fs.MimeType(o), updateInfo, o.remote) if err != nil { return err } } o.setMetaData(info) return nil } // Remove an object func (o *Object) Remove() error { if o.isDocument { return fmt.Errorf("Can't delete a google document") } var err error err = o.fs.pacer.Call(func() (bool, error) { if *driveUseTrash { _, err = o.fs.svc.Files.Trash(o.id).Do() } else { err = o.fs.svc.Files.Delete(o.id).Do() } return shouldRetry(err) }) return err } // Check the interfaces are satisfied var ( _ fs.Fs = (*Fs)(nil) _ fs.Purger = (*Fs)(nil) _ fs.Copier = (*Fs)(nil) _ fs.Mover = (*Fs)(nil) _ fs.DirMover = (*Fs)(nil) _ fs.Object = (*Object)(nil) )