def delete_security_group_rule(self, context, sg_rule_id):
        """Delete a security group rule

        Delete a security group rule from the Neutron DB and corresponding
        MidoNet resources from its data store.
        """
        LOG.info(_("MidonetPluginV2.delete_security_group_rule called: "
                   "sg_rule_id=%s"), sg_rule_id)

        with context.session.begin(subtransactions=True):
            super(MidonetPluginV2, self).delete_security_group_rule(context,
                                                                    sg_rule_id)
            self.api_cli.delete_security_group_rule(sg_rule_id)

        LOG.info(_("MidonetPluginV2.delete_security_group_rule exiting: "
                   "id=%r"), id)