def get_actions(self, params):
        """Send a HTTP request to the satellite (GET /_checks)
        Get actions from the scheduler.
        Un-serialize data received.

        :param params: the request parameters
        :type params: str
        :return: Actions list on success, [] on failure
        :rtype: list
        """
        res = self.con.get('_checks', params, wait=True)
        logger.debug("Got checks to execute from %s: %s", self.name, res)
        return unserialize(res, True)