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))
