h3c_l3_router_plugin.py 文件源码

def _check_for_dup_router_subnet(self, context, router,
                                     network_id, subnet_id, subnet_cidr):
        try:
            # It's possible these ports are on the same network, but
            # different subnets.
            new_ipnet = netaddr.IPNetwork(subnet_cidr)
            for p in (rp.port for rp in router.attached_ports):
                for ip in p['fixed_ips']:
                    if ip['subnet_id'] == subnet_id:
                        msg = (_("Router already has a port on subnet %s")
                               % subnet_id)
                        raise common_exceptions.BadRequest(
                            resource='router', msg=msg)
                    # Ignore temporary Prefix Delegation CIDRs
                    if subnet_cidr == q_const.PROVISIONAL_IPV6_PD_PREFIX:
                        continue
                    sub_id = ip['subnet_id']
                    cidr = self._core_plugin.get_subnet(context.elevated(),
                                                        sub_id)['cidr']
                    ipnet = netaddr.IPNetwork(cidr)
                    match1 = netaddr.all_matching_cidrs(new_ipnet, [cidr])
                    match2 = netaddr.all_matching_cidrs(ipnet, [subnet_cidr])
                    if match1 or match2:
                        data = {'subnet_cidr': subnet_cidr,
                                'subnet_id': subnet_id,
                                'cidr': cidr,
                                'sub_id': sub_id}
                        msg = (_("Cidr %(subnet_cidr)s of subnet "
                                 "%(subnet_id)s overlaps with cidr %(cidr)s "
                                 "of subnet %(sub_id)s") % data)
                        raise common_exceptions.BadRequest(
                            resource='router', msg=msg)
        except exc.NoResultFound:
            pass