def _create_or_update_port(neutron_network_id, endpoint_id, interface_cidrv4,
interface_cidrv6, interface_mac):
response_interface = {}
subnets = []
fixed_ips = []
subnetsv4 = subnetsv6 = []
if interface_cidrv4:
subnetsv4 = _get_subnets_by_interface_cidr(neutron_network_id,
interface_cidrv4)
if interface_cidrv6:
subnetsv6 = _get_subnets_by_interface_cidr(neutron_network_id,
interface_cidrv6)
subnets = subnetsv4 + subnetsv6
if not len(subnets):
raise exceptions.NoResourceException(
"No subnet exist for the cidrs {0} and {1} ".format(
interface_cidrv4, interface_cidrv6))
if len(subnets) > 2:
raise exceptions.DuplicatedResourceException(
"Multiple subnets exist for the cidrs {0} and {1}".format(
interface_cidrv4, interface_cidrv6))
_get_fixed_ips_by_interface_cidr(subnets, interface_cidrv4,
interface_cidrv6, fixed_ips)
filtered_ports = app.neutron.list_ports(fixed_ips=fixed_ips)
num_port = len(filtered_ports.get('ports', []))
if not num_port:
fixed_ips = utils.get_dict_format_fixed_ips_from_kv_format(fixed_ips)
response_port = _create_port(endpoint_id, neutron_network_id,
interface_mac, fixed_ips)
elif num_port == 1:
port = filtered_ports['ports'][0]
response_port = _update_port(port, endpoint_id)
else:
raise n_exceptions.DuplicatedResourceException(
"Multiple ports exist for the cidrs {0} and {1}".format(
interface_cidrv4, interface_cidrv6))
created_fixed_ips = response_port['fixed_ips']
subnets_dict_by_id = {subnet['id']: subnet for subnet in subnets}
if not interface_mac:
response_interface['MacAddress'] = response_port['mac_address']
if not (interface_cidrv4 or interface_cidrv6):
if 'ip_address' in response_port:
_process_interface_address(response_port, subnets_dict_by_id,
response_interface)
for fixed_ip in created_fixed_ips:
_process_interface_address(fixed_ip, subnets_dict_by_id,
response_interface)
return response_interface
def network_driver_leave():
"""Unbinds a Neutron Port to a network interface attached to a container.
This function takes the following JSON data and delete the veth pair
corresponding to the given info. ::
{
"NetworkID": string,
"EndpointID": string
}
"""
json_data = flask.request.get_json(force=True)
app.logger.debug(
"Received JSON data {0} for /NetworkDriver.DeleteEndpoint".format(
json_data))
jsonschema.validate(json_data, schemata.LEAVE_SCHEMA)
neutron_network_name = json_data['NetworkID']
endpoint_id = json_data['EndpointID']
filtered_networks = _get_networks_by_attrs(name=neutron_network_name)
if not filtered_networks:
return flask.jsonify({
'Err':
"Neutron network associated with ID {0} doesn't exit.".format(
neutron_network_name)
})
else:
neutron_port_name = utils.get_neutron_port_name(endpoint_id)
filtered_ports = _get_ports_by_attrs(name=neutron_port_name)
if not filtered_ports:
raise exceptions.NoResourceException(
"The port doesn't exist for the name {0}".format(
neutron_port_name))
neutron_port = filtered_ports[0]
try:
stdout, stderr = binding.port_unbind(endpoint_id, neutron_port)
app.logger.debug(stdout)
if stderr:
app.logger.error(stderr)
except processutils.ProcessExecutionError:
with excutils.save_and_reraise_exception():
app.logger.error(
'Could not unbind the Neutron port from the veth '
'endpoint.')
except exceptions.VethDeletionFailure:
with excutils.save_and_reraise_exception():
app.logger.error('Cleaning the veth pair up was failed.')
return flask.jsonify(constants.SCHEMA['SUCCESS'])
def _get_or_create_subnet_by_pools(subnetpool_names, neutron_network_id,
endpoint_id, new_subnets, existing_subnets):
for subnetpool_name in subnetpool_names:
pools = _get_subnetpools_by_attrs(name=subnetpool_name)
if pools:
pool = pools[0]
prefixes = pool['prefixes']
for prefix in prefixes:
_process_subnet(neutron_network_id, endpoint_id, prefix,
new_subnets, existing_subnets,
pool_id=pool['id'])
if not (new_subnets or existing_subnets):
raise exceptions.NoResourceException(
"No subnetpools with name {0} is found."
.format(', '.join(subnetpool_names)))
def ipam_request_address():
"""Allocates the IP address in the given request.
This function takes the following JSON data and add the given IP address in
the allocation_pools attribute of the subnet. ::
{
"PoolID": string
"Address": string
"Options": map[string]string
}
Then the following response is returned. ::
{
"Address": string
"Data": map[string]string
}
See the following link for more details about the spec:
https://github.com/docker/libnetwork/blob/master/docs/ipam.md#requestaddress # noqa
"""
json_data = flask.request.get_json(force=True)
app.logger.debug(
"Received JSON data {0} for /IpamDriver.RequestAddress".format(
json_data))
jsonschema.validate(json_data, schemata.REQUEST_ADDRESS_SCHEMA)
pool_id = json_data['PoolID']
req_address = json_data['Address']
allocated_address = ''
subnet_cidr = ''
pool_prefix_len = ''
pools = _get_subnetpools_by_attrs(id=pool_id)
if pools:
pool = pools[0]
prefixes = pool['prefixes']
if len(prefixes) > 1:
app.logger.warning(
_LW("More than one prefixes present. Picking "
"first one."))
for prefix in prefixes:
cidr = netaddr.IPNetwork(prefix)
pool_prefix_len = str(cidr.prefixlen)
subnet_network = str(cidr.network)
subnet_cidr = '/'.join([subnet_network, pool_prefix_len])
break
else:
raise exceptions.NoResourceException(
"No subnetpools with id {0} is found.".format(pool_id))
# check if any subnet with matching cidr is present
subnets = _get_subnets_by_attrs(cidr=subnet_cidr)
if subnets:
subnet = subnets[0]
# allocating address for container port
neutron_network_id = subnet['network_id']
try:
port = {
'name': 'kuryr-unbound-port',
'admin_state_up': True,
'network_id': neutron_network_id,
'binding:host_id': utils.get_hostname(),
}
fixed_ips = port['fixed_ips'] = []
fixed_ip = {'subnet_id': subnet['id']}
if req_address:
fixed_ip['ip_address'] = req_address
fixed_ips.append(fixed_ip)
created_port_resp = app.neutron.create_port({'port': port})
created_port = created_port_resp['port']
allocated_address = created_port['fixed_ips'][0]['ip_address']
allocated_address = '/'.join(
[allocated_address, str(cidr.prefixlen)])
except n_exceptions.NeutronClientException as ex:
app.logger.error(
_LE("Error happend during ip allocation on"
"Neutron side: {0}").format(ex))
raise
else:
# Auxiliary address or gw_address is received at network creation time.
# This address cannot be reserved with neutron at this time as subnet
# is not created yet. In /NetworkDriver.CreateNetwork this address will
# be reserved with neutron.
if req_address:
allocated_address = '/'.join([req_address, pool_prefix_len])
return flask.jsonify({'Address': allocated_address})
def network_driver_join():
"""Binds a Neutron Port to a network interface attached to a container.
This function takes the following JSON data, creates a veth pair, put one
end inside of the container and binds another end to the Neutron Port
specified in the request. ::
{
"NetworkID": string,
"EndpointID": string,
"SandboxKey": string,
"Options": {
...
}
}
If the binding is succeeded, the following JSON response is returned.::
{
"InterfaceName": {
SrcName: string,
DstPrefix: string
},
"Gateway": string,
"GatewayIPv6": string,
"StaticRoutes": [{
"Destination": string,
"RouteType": int,
"NextHop": string,
}, ...]
}
See the following link for more details about the spec:
https://github.com/docker/libnetwork/blob/master/docs/remote.md#join # noqa
"""
json_data = flask.request.get_json(force=True)
app.logger.debug(
"Received JSON data {0} for /NetworkDriver.Join".format(json_data))
jsonschema.validate(json_data, schemata.JOIN_SCHEMA)
neutron_network_tags = utils.make_net_tags(json_data['NetworkID'])
endpoint_id = json_data['EndpointID']
filtered_networks = _get_networks_by_attrs(tags=neutron_network_tags)
if not filtered_networks:
return flask.jsonify({
'Err':
"Neutron network associated with tags {0} doesn't exit.".format(
neutron_network_tags)
})
else:
neutron_network_id = filtered_networks[0]['id']
neutron_port_name = utils.get_neutron_port_name(endpoint_id)
filtered_ports = _get_ports_by_attrs(name=neutron_port_name)
if not filtered_ports:
raise exceptions.NoResourceException(
"The port doesn't exist for the name {0}".format(
neutron_port_name))
neutron_port = filtered_ports[0]
all_subnets = _get_subnets_by_attrs(network_id=neutron_network_id)
try:
ifname, peer_name, (stdout, stderr) = binding.port_bind(
endpoint_id, neutron_port, all_subnets)
app.logger.debug(stdout)
if stderr:
app.logger.error(stderr)
except exceptions.VethCreationFailure as ex:
with excutils.save_and_reraise_exception():
app.logger.error(
_LE('Preparing the veth '
'pair was failed: {0}.').format(ex))
except processutils.ProcessExecutionError:
with excutils.save_and_reraise_exception():
app.logger.error(
_LE('Could not bind the Neutron port to the veth endpoint.'
))
join_response = {
"InterfaceName": {
"SrcName": peer_name,
"DstPrefix": config.CONF.binding.veth_dst_prefix
},
"StaticRoutes": []
}
for subnet in all_subnets:
if subnet['ip_version'] == 4:
join_response['Gateway'] = subnet.get('gateway_ip', '')
else:
join_response['GatewayIPv6'] = subnet.get('gateway_ip', '')
host_routes = subnet.get('host_routes', [])
for host_route in host_routes:
static_route = {'Destination': host_route['destination']}
if host_route.get('nexthop', None):
static_route['RouteType'] = const.TYPES['NEXTHOP']
static_route['NextHop'] = host_route['nexthop']
else:
static_route['RouteType'] = const.TYPES['CONNECTED']
join_response['StaticRoutes'].append(static_route)
return flask.jsonify(join_response)
def ipam_release_address():
"""Deallocates the IP address in the given request.
This function takes the following JSON data and remove the given IP address
from the allocation_pool attribute of the subnet. ::
{
"PoolID": string
"Address": string
}
Then the following response is returned. ::
{}
See the following link for more details about the spec:
https://github.com/docker/libnetwork/blob/master/docs/ipam.md#releaseaddress # noqa
"""
json_data = flask.request.get_json(force=True)
app.logger.debug(
"Received JSON data {0} for /IpamDriver.ReleaseAddress".format(
json_data))
jsonschema.validate(json_data, schemata.RELEASE_ADDRESS_SCHEMA)
pool_id = json_data['PoolID']
rel_address = json_data['Address']
pools = _get_subnetpools_by_attrs(id=pool_id)
if pools:
pool = pools[0]
prefixes = pool['prefixes']
for prefix in prefixes:
cidr = netaddr.IPNetwork(prefix)
subnet_network = str(cidr.network)
subnet_cidr = '/'.join([subnet_network, str(cidr.prefixlen)])
else:
raise exceptions.NoResourceException(
"No subnetpools with id {0} is found.".format(pool_id))
# check if any subnet with matching cidr is present
subnets = _get_subnets_by_attrs(cidr=subnet_cidr)
if not len(subnets):
raise exceptions.NoResourceException(
"No subnet is found using pool {0} "
"and pool_cidr {1}".format(pool_id, cidr))
subnet = subnets[0]
cidr_address = netaddr.IPNetwork(rel_address)
rcvd_fixed_ips = []
fixed_ip = {'subnet_id': subnet['id']}
fixed_ip['ip_address'] = str(cidr_address.ip)
rcvd_fixed_ips.append(fixed_ip)
try:
filtered_ports = []
all_ports = app.neutron.list_ports()
for port in all_ports['ports']:
if port['fixed_ips'] == rcvd_fixed_ips:
filtered_ports.append(port)
for port in filtered_ports:
app.neutron.delete_port(port['id'])
except n_exceptions.NeutronClientException as ex:
app.logger.error(
_LE("Error happend while fetching and deleting port, "
"{0}").format(ex))
raise
return flask.jsonify(const.SCHEMA['SUCCESS'])
