Run time_auth and create a token. Return False or the token

def mk_token(self, load):
        '''
        Run time_auth and create a token. Return False or the token
        '''
        if not self.authenticate_eauth(load):
            return {}

        if self._allow_custom_expire(load):
            token_expire = load.pop('token_expire', self.opts['token_expire'])
        else:
            _ = load.pop('token_expire', None)
            token_expire = self.opts['token_expire']

        tdata = {'start': time.time(),
                 'expire': time.time() + token_expire,
                 'name': self.load_name(load),
                 'eauth': load['eauth']}

        if self.opts['keep_acl_in_token']:
            acl_ret = self.__get_acl(load)
            tdata['auth_list'] = acl_ret

        groups = self.get_groups(load)
        if groups:
            tdata['groups'] = groups

        return self.tokens["{0}.mk_token".format(self.opts['eauth_tokens'])](self.opts, tdata)