'Enables connection logging for a Balancer.  This method blocks until
the enable request has been processed and the balancer is in a RUNNING
state again.
:param balancer: Balancer to enable connection logging on.
:type  balancer: :class:`LoadBalancer`
:return: Updated Balancer.
:rtype: :class:`LoadBalancer`'

def ex_enable_balancer_connection_logging(self, balancer):

    if (not self.ex_enable_balancer_connection_logging_no_poll(balancer)):
        msg = 'Enable    connection    logging    request    not    accepted'
        raise LibcloudError(msg, driver=self)
    return self._get_updated_balancer(balancer)
