controllers.py 文件源码

def _get_subnets_by_interface_cidr(neutron_network_id,
                                   interface_cidr):
    iface = ipaddress.ip_interface(six.text_type(interface_cidr))
    subnets = _get_subnets_by_attrs(
        network_id=neutron_network_id, cidr=six.text_type(iface.network))
    if len(subnets) > 2:
        raise exceptions.DuplicatedResourceException(
            "Multiple Neutron subnets exist for the network_id={0}"
            "and cidr={1}"
            .format(neutron_network_id, iface.network))
    return subnets