Function safeFileFromURL

apis/record_auth_with_oauth2.go:484–510

safeFileFromURL downloads the file from the specified url (using safeHTTPClient) and creates a new filesystem.File value from its content (limited to DefaultMaxBodySize). @todo Evaluate with the refactoring if worth exporting/replacing filesystem.NewFileFromURL (or redefine as NewUnsafeFileFromURL)

(ctx context.Context, url string)

//
// @todo Evaluate with the refactoring if worth exporting/replacing filesystem.NewFileFromURL (or redefine as NewUnsafeFileFromURL).
func safeFileFromURL(ctx context.Context, url string) (*filesystem.File, error) {
	req, err := http.NewRequestWithContext(ctx, "GET", url, nil)
	if err != nil {
		return nil, err
	}

	client := safeHTTPClient()

	res, err := client.Do(req)
	if err != nil {
		return nil, err
	}
	defer res.Body.Close()

	if res.StatusCode < 200 || res.StatusCode > 399 {
		return nil, fmt.Errorf("failed to download url %s (%d)", url, res.StatusCode)
	}

	body := io.LimitReader(res.Body, DefaultMaxBodySize)

	var buf bytes.Buffer
	if _, err = io.Copy(&buf, body); err != nil {
		return nil, err
	}

	return filesystem.NewFileFromBytes(buf.Bytes(), path.Base(url))
}