def port_unbind(endpoint_id, neutron_port): """Unbinds the Neutron port from the network interface on the host. :param endpoint_id: the ID of the Docker container as string :param neutron_port: a port dictionary returned from python-neutronclient :returns: the tuple of stdout and stderr returned by processutils.execute invoked with the executable script for unbinding :raises: processutils.ProcessExecutionError, pyroute2.netlink.NetlinkError """ vif_type = neutron_port.get(VIF_TYPE_KEY, FALLBACK_VIF_TYPE) vif_details = utils.string_mappings(neutron_port.get(VIF_DETAILS_KEY)) unbinding_exec_path = os.path.join(config.CONF.bindir, vif_type) ifname = VETH_PREFIX + endpoint_id[:8] port_id = neutron_port['id'] mac_address = neutron_port['mac_address'] stdout, stderr = processutils.execute( unbinding_exec_path, UNBINDING_SUBCOMMAND, port_id, ifname, endpoint_id, mac_address, vif_details, run_as_root=True) try: cleanup_veth(ifname) except pyroute2.netlink.NetlinkError: raise exceptions.VethDeleteionFailure( 'Deleting the veth pair failed.') return (stdout, stderr)
def port_bind(endpoint_id, neutron_port, neutron_subnets): """Binds the Neutron port to the network interface on the host. :param endpoint_id: the ID of the endpoint as string :param neutron_port: a port dictionary returned from python-neutronclient :param neutron_subnets: a list of all subnets under network to which this endpoint is trying to join :returns: the tuple of the names of the veth pair and the tuple of stdout and stderr returned by processutils.execute invoked with the executable script for binding :raises: kuryr.common.exceptions.VethCreationFailure, processutils.ProcessExecutionError """ ip = get_ipdb() ifname = VETH_PREFIX + endpoint_id[:8] peer_name = CONTAINER_VETH_PREFIX + ifname subnets_dict = {subnet['id']: subnet for subnet in neutron_subnets} try: with ip.create(ifname=ifname, kind=KIND_VETH, reuse=True, peer=peer_name) as host_veth: if not _is_up(host_veth): host_veth.up() with ip.interfaces[peer_name] as peer_veth: fixed_ips = neutron_port.get(FIXED_IP_KEY, []) if not fixed_ips and (IP_ADDRESS_KEY in neutron_port): peer_veth.add_ip(neutron_port[IP_ADDRESS_KEY]) for fixed_ip in fixed_ips: if IP_ADDRESS_KEY in fixed_ip and (SUBNET_ID_KEY in fixed_ip): subnet_id = fixed_ip[SUBNET_ID_KEY] subnet = subnets_dict[subnet_id] cidr = netaddr.IPNetwork(subnet['cidr']) peer_veth.add_ip(fixed_ip[IP_ADDRESS_KEY], cidr.prefixlen) peer_veth.address = neutron_port[MAC_ADDRESS_KEY].lower() if not _is_up(peer_veth): peer_veth.up() except pyroute2.ipdb.common.CreateException: raise exceptions.VethCreationFailure( 'Creating the veth pair was failed.') except pyroute2.ipdb.common.CommitException: raise exceptions.VethCreationFailure( 'Could not configure the veth endpoint for the container.') vif_type = neutron_port.get(VIF_TYPE_KEY, FALLBACK_VIF_TYPE) vif_details = utils.string_mappings(neutron_port.get(VIF_DETAILS_KEY)) binding_exec_path = os.path.join(config.CONF.bindir, vif_type) port_id = neutron_port['id'] network_id = neutron_port['network_id'] tenant_id = neutron_port['tenant_id'] mac_address = neutron_port['mac_address'] try: stdout, stderr = processutils.execute( binding_exec_path, BINDING_SUBCOMMAND, port_id, ifname, endpoint_id, mac_address, network_id, tenant_id, vif_details, run_as_root=True) except processutils.ProcessExecutionError: with excutils.save_and_reraise_exception(): cleanup_veth(ifname) return (ifname, peer_name, (stdout, stderr))