Golang rest.Opts類代碼示例

// Open an object for read
func (o *Object) Open() (in io.ReadCloser, err error) {
	opts := rest.Opts{
		Method:   "GET",
		Absolute: true,
		Path:     o.fs.info.DownloadURL,
	}
	// Download by id if set otherwise by name
	if o.id != "" {
		opts.Path += "/b2api/v1/b2_download_file_by_id?fileId=" + urlEncode(o.id)
	} else {
		opts.Path += "/file/" + urlEncode(o.fs.bucket) + "/" + urlEncode(o.fs.root+o.remote)
	}
	var resp *http.Response
	err = o.fs.pacer.Call(func() (bool, error) {
		resp, err = o.fs.srv.Call(&opts)
		return o.fs.shouldRetry(resp, err)
	})
	if err != nil {
		return nil, errors.Wrap(err, "failed to open for download")
	}

	// Parse the time out of the headers if possible
	err = o.parseTimeString(resp.Header.Get(timeHeader))
	if err != nil {
		_ = resp.Body.Close()
		return nil, err
	}
	if o.sha1 == "" {
		o.sha1 = resp.Header.Get(sha1Header)
	}
	return newOpenFile(o, resp), nil
}

// list lists the objects into the function supplied from
// the bucket and root supplied
//
// If prefix is set then startFileName is used as a prefix which all
// files must have
//
// If limit is > 0 then it limits to that many files (must be less
// than 1000)
//
// If hidden is set then it will list the hidden (deleted) files too.
func (f *Fs) list(prefix string, limit int, hidden bool, fn listFn) error {
	bucketID, err := f.getBucketID()
	if err != nil {
		return err
	}
	chunkSize := 1000
	if limit > 0 {
		chunkSize = limit
	}
	var request = api.ListFileNamesRequest{
		BucketID:     bucketID,
		MaxFileCount: chunkSize,
	}
	prefix = f.root + prefix
	if prefix != "" {
		request.StartFileName = prefix
	}
	var response api.ListFileNamesResponse
	opts := rest.Opts{
		Method: "POST",
		Path:   "/b2_list_file_names",
	}
	if hidden {
		opts.Path = "/b2_list_file_versions"
	}
	for {
		_, err = f.srv.CallJSON(&opts, &request, &response)
		if err != nil {
			return err
		}
		for i := range response.Files {
			file := &response.Files[i]
			// Finish if file name no longer has prefix
			if !strings.HasPrefix(file.Name, prefix) {
				return nil
			}
			err = fn(file.Name[len(prefix):], file)
			if err != nil {
				return err
			}
		}
		// end if no NextFileName
		if response.NextFileName == nil {
			break
		}
		request.StartFileName = *response.NextFileName
		if response.NextFileID != nil {
			request.StartFileID = *response.NextFileID
		}
	}
	return nil
}

// 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
func (f *Fs) listAll(dirID string, directoriesOnly bool, filesOnly bool, fn listAllFn) (found bool, err error) {
	// Top parameter asks for bigger pages of data
	// https://dev.onedrive.com/odata/optional-query-parameters.htm
	opts := rest.Opts{
		Method: "GET",
		Path:   "/drive/items/" + dirID + "/children?top=1000",
	}
OUTER:
	for {
		var result api.ListChildrenResponse
		var resp *http.Response
		err = f.pacer.Call(func() (bool, error) {
			resp, err = f.srv.CallJSON(&opts, nil, &result)
			return shouldRetry(resp, err)
		})
		if err != nil {
			fs.Stats.Error()
			fs.ErrorLog(f, "Couldn't list files: %v", err)
			break
		}
		if len(result.Value) == 0 {
			break
		}
		for i := range result.Value {
			item := &result.Value[i]
			isFolder := item.Folder != nil
			if isFolder {
				if filesOnly {
					continue
				}
			} else {
				if directoriesOnly {
					continue
				}
			}
			if item.Deleted != nil {
				continue
			}
			item.Name = restoreReservedChars(item.Name)
			if fn(item) {
				found = true
				break OUTER
			}
		}
		if result.NextLink == "" {
			break
		}
		opts.Path = result.NextLink
		opts.Absolute = true
	}
	return
}

// Open an object for read
func (o *Object) Open(options ...fs.OpenOption) (in io.ReadCloser, err error) {
	opts := rest.Opts{
		Method:   "GET",
		Absolute: true,
		Path:     o.fs.info.DownloadURL,
		Options:  options,
	}
	// Download by id if set otherwise by name
	if o.id != "" {
		opts.Path += "/b2api/v1/b2_download_file_by_id?fileId=" + urlEncode(o.id)
	} else {
		opts.Path += "/file/" + urlEncode(o.fs.bucket) + "/" + urlEncode(o.fs.root+o.remote)
	}
	var resp *http.Response
	err = o.fs.pacer.Call(func() (bool, error) {
		resp, err = o.fs.srv.Call(&opts)
		return o.fs.shouldRetry(resp, err)
	})
	if err != nil {
		return nil, errors.Wrap(err, "failed to open for download")
	}

	// Parse the time out of the headers if possible
	err = o.parseTimeString(resp.Header.Get(timeHeader))
	if err != nil {
		_ = resp.Body.Close()
		return nil, err
	}
	// Read sha1 from header if it isn't set
	if o.sha1 == "" {
		o.sha1 = resp.Header.Get(sha1Header)
		fs.Debug(o, "Reading sha1 from header - %q", o.sha1)
		// if sha1 header is "none" (in big files), then need
		// to read it from the metadata
		if o.sha1 == "none" {
			o.sha1 = resp.Header.Get(sha1InfoHeader)
			fs.Debug(o, "Reading sha1 from info - %q", o.sha1)
		}
	}
	// Don't check length or hash on partial content
	if resp.StatusCode == http.StatusPartialContent {
		return resp.Body, nil
	}
	return newOpenFile(o, resp), nil
}

// list lists the objects into the function supplied from
// the bucket and root supplied
//
// dir is the starting directory, "" for root
//
// level is the depth to search to
//
// If prefix is set then startFileName is used as a prefix which all
// files must have
//
// If limit is > 0 then it limits to that many files (must be less
// than 1000)
//
// If hidden is set then it will list the hidden (deleted) files too.
func (f *Fs) list(dir string, level int, prefix string, limit int, hidden bool, fn listFn) error {
	root := f.root
	if dir != "" {
		root += dir + "/"
	}
	delimiter := ""
	switch level {
	case 1:
		delimiter = "/"
	case fs.MaxLevel:
	default:
		return fs.ErrorLevelNotSupported
	}
	bucketID, err := f.getBucketID()
	if err != nil {
		return err
	}
	chunkSize := 1000
	if limit > 0 {
		chunkSize = limit
	}
	var request = api.ListFileNamesRequest{
		BucketID:     bucketID,
		MaxFileCount: chunkSize,
		Prefix:       root,
		Delimiter:    delimiter,
	}
	prefix = root + prefix
	if prefix != "" {
		request.StartFileName = prefix
	}
	var response api.ListFileNamesResponse
	opts := rest.Opts{
		Method: "POST",
		Path:   "/b2_list_file_names",
	}
	if hidden {
		opts.Path = "/b2_list_file_versions"
	}
	for {
		err := f.pacer.Call(func() (bool, error) {
			resp, err := f.srv.CallJSON(&opts, &request, &response)
			return f.shouldRetry(resp, err)
		})
		if err != nil {
			return err
		}
		for i := range response.Files {
			file := &response.Files[i]
			// Finish if file name no longer has prefix
			if prefix != "" && !strings.HasPrefix(file.Name, prefix) {
				return nil
			}
			if !strings.HasPrefix(file.Name, f.root) {
				fs.Log(f, "Odd name received %q", file.Name)
				continue
			}
			remote := file.Name[len(f.root):]
			// Check for directory
			isDirectory := level != 0 && strings.HasSuffix(remote, "/")
			if isDirectory {
				remote = remote[:len(remote)-1]
			}
			// Send object
			err = fn(remote, file, isDirectory)
			if err != nil {
				if err == errEndList {
					return nil
				}
				return err
			}
		}
		// end if no NextFileName
		if response.NextFileName == nil {
			break
		}
		request.StartFileName = *response.NextFileName
		if response.NextFileID != nil {
			request.StartFileID = *response.NextFileID
		}
	}
	return nil
}

// list lists the objects into the function supplied from
// the bucket and root supplied
//
// level is the depth to search to
//
// If prefix is set then startFileName is used as a prefix which all
// files must have
//
// If limit is > 0 then it limits to that many files (must be less
// than 1000)
//
// If hidden is set then it will list the hidden (deleted) files too.
func (f *Fs) list(dir string, level int, prefix string, limit int, hidden bool, fn listFn) error {
	root := f.root
	if dir != "" {
		root += dir + "/"
	}
	bucketID, err := f.getBucketID()
	if err != nil {
		return err
	}
	chunkSize := 1000
	if limit > 0 {
		chunkSize = limit
	}
	var request = api.ListFileNamesRequest{
		BucketID:     bucketID,
		MaxFileCount: chunkSize,
	}
	prefix = root + prefix
	if prefix != "" {
		request.StartFileName = prefix
	}
	var response api.ListFileNamesResponse
	opts := rest.Opts{
		Method: "POST",
		Path:   "/b2_list_file_names",
	}
	if hidden {
		opts.Path = "/b2_list_file_versions"
	}
	lastDir := dir
	for {
		err := f.pacer.Call(func() (bool, error) {
			resp, err := f.srv.CallJSON(&opts, &request, &response)
			return f.shouldRetry(resp, err)
		})
		if err != nil {
			return err
		}
		for i := range response.Files {
			file := &response.Files[i]
			// Finish if file name no longer has prefix
			if !strings.HasPrefix(file.Name, prefix) {
				return nil
			}
			remote := file.Name[len(f.root):]
			slashes := strings.Count(remote, "/")

			// Check if this file makes a new directories
			var dirNames []string
			dirNames, lastDir = sendDir(lastDir, remote, level)
			for _, dirName := range dirNames {
				err = fn(dirName, nil, true)
				if err != nil {
					if err == errEndList {
						return nil
					}
					return err
				}
			}

			// Send the file
			if slashes < level {
				err = fn(remote, file, false)
				if err != nil {
					if err == errEndList {
						return nil
					}
					return err
				}
			}
		}
		// end if no NextFileName
		if response.NextFileName == nil {
			break
		}
		request.StartFileName = *response.NextFileName
		if response.NextFileID != nil {
			request.StartFileID = *response.NextFileID
		}
	}
	return nil
}