* @throws LoginRequiredException if login is required
     * @throws UserRoleLoginException if the user doesn't have required roles
     */
    @Override
    protected void checkPermission(final LoginHandlingResource resource) throws LoginRequiredException {
        if (FessAdminAction.class.isAssignableFrom(resource.getActionClass())) {
            getSavedUserBean().ifPresent(user -> {

	}
	defer updateInProgress.Store(0)

	transport := getUpdateTransport(30 * time.Second)
	opts := selfupdate.Options{
		Hash:     crypto.SHA256,
		Checksum: sha256Sum,
	}

	if err := opts.CheckPermissions(); err != nil {
		return AdminError{
			Code:       AdminUpdateApplyFailure,
			Message:    fmt.Sprintf("server update failed with: %s, do not restart the servers yet", err),