179 lines
7.1 KiB
Python
Executable File
179 lines
7.1 KiB
Python
Executable File
# All Rights Reserved.
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#
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# Licensed under the Apache License, Version 2.0 (the "License"); you may
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# not use this file except in compliance with the License. You may obtain
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# a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
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# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
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# License for the specific language governing permissions and limitations
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# under the License.
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import threading
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from openstack import exceptions as o_exc
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from oslo_config import cfg
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from oslo_log import log as logging
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from kuryr_kubernetes import clients
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from kuryr_kubernetes import config as kuryr_config
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from kuryr_kubernetes.controller.drivers import nested_vif
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from kuryr_kubernetes.controller.drivers import utils
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from kuryr_kubernetes import exceptions as k_exc
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from kuryr_kubernetes import os_vif_util as ovu
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LOG = logging.getLogger(__name__)
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CONF = cfg.CONF
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class NestedMacvlanPodVIFDriver(nested_vif.NestedPodVIFDriver):
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"""Manages ports for nested-containers using MACVLAN to provide VIFs."""
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def __init__(self):
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self.lock = threading.Lock()
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def request_vif(self, pod, project_id, subnets, security_groups):
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os_net = clients.get_network_client()
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req = self._get_port_request(pod, project_id, subnets,
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security_groups)
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attempts = kuryr_config.CONF.pod_vif_nested.rev_update_attempts
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container_port = None
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while attempts > 0:
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vm_port = self._get_parent_port(pod)
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if not container_port:
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container_port = os_net.create_port(**req)
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self._check_port_binding([container_port])
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utils.tag_neutron_resources([container_port])
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container_mac = container_port.mac_address
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container_ips = frozenset(entry['ip_address'] for entry in
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container_port.fixed_ips)
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attempts = self._try_update_port(
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attempts, self._add_to_allowed_address_pairs, vm_port,
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container_ips, container_mac)
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return ovu.neutron_to_osvif_vif_nested_macvlan(container_port, subnets)
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def request_vifs(self, pod, project_id, subnets, security_groups,
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num_ports):
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# TODO(mchiappe): provide an implementation
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raise NotImplementedError()
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def release_vif(self, pod, vif, project_id=None, security_groups=None):
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os_net = clients.get_network_client()
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attempts = kuryr_config.CONF.pod_vif_nested.rev_update_attempts
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while attempts > 0:
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container_port = os_net.get_port(vif.id)
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container_mac = container_port.mac_address
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container_ips = frozenset(entry['ip_address'] for entry in
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container_port.fixed_ips)
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vm_port = self._get_parent_port(pod)
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attempts = self._try_update_port(
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attempts, self._remove_from_allowed_address_pairs,
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vm_port, container_ips, container_mac)
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try:
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os_net.delete_port(vif.id, ignore_missing=False)
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except o_exc.ResourceNotFound:
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LOG.warning("Unable to release port %s as it no longer exists.",
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vif.id)
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def activate_vif(self, vif):
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# NOTE(mchiappe): there is no way to get feedback on the actual
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# interface creation or activation as no plugging can happen for this
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# interface type. However the status of the port is not relevant as
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# it is used for IPAM purposes only, thus just set 'active'
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# immediately to let the CNI driver make progress.
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vif.active = True
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def _add_to_allowed_address_pairs(self, port, ip_addresses,
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mac_address=None):
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if not ip_addresses:
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raise k_exc.IntegrityError(
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"Cannot add pair from the "
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"allowed_address_pairs of port %s: missing IP address",
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port.id)
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mac = mac_address if mac_address else port.mac_address
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address_pairs = port.allowed_address_pairs
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# look for duplicates or near-matches
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for pair in address_pairs:
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if pair['ip_address'] in ip_addresses:
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if pair['mac_address'] is mac:
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raise k_exc.AllowedAddressAlreadyPresent(
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"Pair %s already "
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"present in the 'allowed_address_pair' list. This is "
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"due to a misconfiguration or a bug", pair)
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else:
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LOG.warning(
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"A pair with IP %s but different MAC address "
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"is already present in the 'allowed_address_pair'. "
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"This could indicate a misconfiguration or a "
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"bug", pair['ip_address'])
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for ip in ip_addresses:
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address_pairs.append({'ip_address': ip, 'mac_address': mac})
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self._update_port_address_pairs(
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port.id, address_pairs,
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revision_number=port.revision_number)
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LOG.debug("Added allowed_address_pair %s %s" %
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(str(ip_addresses,), mac_address))
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def _remove_from_allowed_address_pairs(self, port, ip_addresses,
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mac_address=None):
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if not ip_addresses:
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raise k_exc.IntegrityError(
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"Cannot remove pair from the "
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"allowed_address_pairs of port %s: missing IP address",
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port.id)
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mac = mac_address if mac_address else port.mac_address
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address_pairs = port.allowed_address_pairs
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updated = False
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for ip in ip_addresses:
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try:
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address_pairs.remove({'ip_address': ip, 'mac_address': mac})
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updated = True
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except ValueError:
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LOG.error("No {'ip_address': %s, 'mac_address': %s} pair "
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"found in the 'allowed_address_pair' list while "
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"trying to remove it.", ip, mac)
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if updated:
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self._update_port_address_pairs(
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port.id,
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address_pairs,
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revision_number=port.revision_number)
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def _update_port_address_pairs(self, port_id, address_pairs,
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revision_number=None):
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os_net = clients.get_network_client()
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os_net.update_port(port_id, allowed_address_pairs=address_pairs,
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if_match=f'revision_number={revision_number}')
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def _try_update_port(self, attempts, f,
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vm_port, container_ips, container_mac):
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try:
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with self.lock:
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f(vm_port, container_ips, container_mac)
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attempts = 0
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except o_exc.SDKException:
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attempts -= 1
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if attempts == 0:
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LOG.exception("Error happened during updating port %s",
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vm_port['id'] if vm_port else None)
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raise
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return attempts
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