815 lines
37 KiB
Python
815 lines
37 KiB
Python
# Copyright (c) 2014 OpenStack Foundation. 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 collections
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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 oslo_utils import excutils
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import six
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from neutron.api.v2 import attributes
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from neutron.callbacks import events
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from neutron.callbacks import exceptions
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from neutron.callbacks import registry
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from neutron.callbacks import resources
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from neutron.common import constants as l3_const
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from neutron.common import exceptions as n_exc
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from neutron.common import utils as n_utils
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from neutron.db import l3_attrs_db
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from neutron.db import l3_db
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from neutron.db import l3_dvrscheduler_db as l3_dvrsched_db
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from neutron.db import models_v2
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from neutron.extensions import l3
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from neutron.extensions import portbindings
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from neutron.i18n import _LI, _LW
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from neutron import manager
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from neutron.plugins.common import constants
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from neutron.plugins.common import utils as p_utils
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LOG = logging.getLogger(__name__)
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router_distributed_opts = [
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cfg.BoolOpt('router_distributed',
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default=False,
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help=_("System-wide flag to determine the type of router "
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"that tenants can create. Only admin can override.")),
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]
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cfg.CONF.register_opts(router_distributed_opts)
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class L3_NAT_with_dvr_db_mixin(l3_db.L3_NAT_db_mixin,
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l3_attrs_db.ExtraAttributesMixin):
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"""Mixin class to enable DVR support."""
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router_device_owners = (
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l3_db.L3_NAT_db_mixin.router_device_owners +
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(l3_const.DEVICE_OWNER_DVR_INTERFACE,
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l3_const.DEVICE_OWNER_ROUTER_SNAT,
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l3_const.DEVICE_OWNER_AGENT_GW))
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extra_attributes = (
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l3_attrs_db.ExtraAttributesMixin.extra_attributes + [{
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'name': "distributed",
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'default': cfg.CONF.router_distributed
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}])
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def _create_router_db(self, context, router, tenant_id):
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"""Create a router db object with dvr additions."""
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router['distributed'] = is_distributed_router(router)
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with context.session.begin(subtransactions=True):
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router_db = super(
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L3_NAT_with_dvr_db_mixin, self)._create_router_db(
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context, router, tenant_id)
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self._process_extra_attr_router_create(context, router_db, router)
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return router_db
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def _validate_router_migration(self, context, router_db, router_res):
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"""Allow centralized -> distributed state transition only."""
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if (router_db.extra_attributes.distributed and
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router_res.get('distributed') is False):
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LOG.info(_LI("Centralizing distributed router %s "
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"is not supported"), router_db['id'])
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raise n_exc.BadRequest(
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resource='router',
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msg=_("Migration from distributed router to centralized is "
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"not supported"))
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elif (not router_db.extra_attributes.distributed and
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router_res.get('distributed')):
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# router should be disabled in order for upgrade
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if router_db.admin_state_up:
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msg = _('Cannot upgrade active router to distributed. Please '
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'set router admin_state_up to False prior to upgrade.')
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raise n_exc.BadRequest(resource='router', msg=msg)
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# Notify advanced services of the imminent state transition
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# for the router.
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try:
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kwargs = {'context': context, 'router': router_db}
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registry.notify(
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resources.ROUTER, events.BEFORE_UPDATE, self, **kwargs)
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except exceptions.CallbackFailure as e:
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with excutils.save_and_reraise_exception():
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# NOTE(armax): preserve old check's behavior
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if len(e.errors) == 1:
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raise e.errors[0].error
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raise l3.RouterInUse(router_id=router_db['id'],
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reason=e)
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def _update_distributed_attr(
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self, context, router_id, router_db, data, gw_info):
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"""Update the model to support the dvr case of a router."""
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if data.get('distributed'):
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old_owner = l3_const.DEVICE_OWNER_ROUTER_INTF
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new_owner = l3_const.DEVICE_OWNER_DVR_INTERFACE
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for rp in router_db.attached_ports.filter_by(port_type=old_owner):
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rp.port_type = new_owner
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rp.port.device_owner = new_owner
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def _update_router_db(self, context, router_id, data, gw_info):
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with context.session.begin(subtransactions=True):
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router_db = super(
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L3_NAT_with_dvr_db_mixin, self)._update_router_db(
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context, router_id, data, gw_info)
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migrating_to_distributed = (
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not router_db.extra_attributes.distributed and
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data.get('distributed') is True)
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self._validate_router_migration(context, router_db, data)
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router_db.extra_attributes.update(data)
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self._update_distributed_attr(
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context, router_id, router_db, data, gw_info)
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if migrating_to_distributed:
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if router_db['gw_port_id']:
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# If the Legacy router is getting migrated to a DVR
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# router, make sure to create corresponding
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# snat interface ports that are to be consumed by
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# the Service Node.
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if not self._create_snat_intf_ports_if_not_exists(
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context.elevated(), router_db):
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LOG.debug("SNAT interface ports not created: %s",
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router_db['id'])
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cur_agents = self.list_l3_agents_hosting_router(
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context, router_db['id'])['agents']
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for agent in cur_agents:
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self._unbind_router(context, router_db['id'],
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agent['id'])
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return router_db
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def _delete_current_gw_port(self, context, router_id, router, new_network):
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"""
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Overriden here to handle deletion of dvr internal ports.
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If there is a valid router update with gateway port to be deleted,
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then go ahead and delete the csnat ports and the floatingip
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agent gateway port associated with the dvr router.
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"""
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gw_ext_net_id = (
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router.gw_port['network_id'] if router.gw_port else None)
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super(L3_NAT_with_dvr_db_mixin,
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self)._delete_current_gw_port(context, router_id,
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router, new_network)
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if (is_distributed_router(router) and
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gw_ext_net_id != new_network and gw_ext_net_id is not None):
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self.delete_csnat_router_interface_ports(
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context.elevated(), router)
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# NOTE(Swami): Delete the Floatingip agent gateway port
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# on all hosts when it is the last gateway port in the
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# given external network.
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filters = {'network_id': [gw_ext_net_id],
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'device_owner': [l3_const.DEVICE_OWNER_ROUTER_GW]}
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ext_net_gw_ports = self._core_plugin.get_ports(
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context.elevated(), filters)
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if not ext_net_gw_ports:
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self.delete_floatingip_agent_gateway_port(
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context.elevated(), None, gw_ext_net_id)
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# Send the information to all the L3 Agent hosts
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# to clean up the fip namespace as it is no longer required.
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self.l3_rpc_notifier.delete_fipnamespace_for_ext_net(
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context, gw_ext_net_id)
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def _create_gw_port(self, context, router_id, router, new_network,
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ext_ips):
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super(L3_NAT_with_dvr_db_mixin,
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self)._create_gw_port(context, router_id, router, new_network,
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ext_ips)
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# Make sure that the gateway port exists before creating the
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# snat interface ports for distributed router.
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if router.extra_attributes.distributed and router.gw_port:
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snat_p_list = self._create_snat_intf_ports_if_not_exists(
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context.elevated(), router)
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if not snat_p_list:
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LOG.debug("SNAT interface ports not created: %s", snat_p_list)
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def _get_device_owner(self, context, router=None):
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"""Get device_owner for the specified router."""
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router_is_uuid = isinstance(router, six.string_types)
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if router_is_uuid:
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router = self._get_router(context, router)
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if is_distributed_router(router):
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return l3_const.DEVICE_OWNER_DVR_INTERFACE
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return super(L3_NAT_with_dvr_db_mixin,
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self)._get_device_owner(context, router)
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def _get_interface_ports_for_network(self, context, network_id):
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router_intf_qry = context.session.query(l3_db.RouterPort)
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router_intf_qry = router_intf_qry.join(models_v2.Port)
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return router_intf_qry.filter(
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models_v2.Port.network_id == network_id,
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l3_db.RouterPort.port_type.in_(l3_const.ROUTER_INTERFACE_OWNERS)
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)
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def _update_fip_assoc(self, context, fip, floatingip_db, external_port):
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"""Override to create floating agent gw port for DVR.
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Floating IP Agent gateway port will be created when a
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floatingIP association happens.
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"""
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fip_port = fip.get('port_id')
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super(L3_NAT_with_dvr_db_mixin, self)._update_fip_assoc(
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context, fip, floatingip_db, external_port)
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associate_fip = fip_port and floatingip_db['id']
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if associate_fip and floatingip_db.get('router_id'):
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admin_ctx = context.elevated()
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router_dict = self.get_router(
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admin_ctx, floatingip_db['router_id'])
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# Check if distributed router and then create the
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# FloatingIP agent gateway port
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if router_dict.get('distributed'):
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vm_hostid = self._get_vm_port_hostid(
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context, fip_port)
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if vm_hostid:
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# FIXME (Swami): This FIP Agent Gateway port should be
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# created only once and there should not be a duplicate
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# for the same host. Until we find a good solution for
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# augmenting multiple server requests we should use the
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# existing flow.
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fip_agent_port = (
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self.create_fip_agent_gw_port_if_not_exists(
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admin_ctx, external_port['network_id'],
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vm_hostid))
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LOG.debug("FIP Agent gateway port: %s", fip_agent_port)
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def _get_floatingip_on_port(self, context, port_id=None):
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"""Helper function to retrieve the fip associated with port."""
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fip_qry = context.session.query(l3_db.FloatingIP)
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floating_ip = fip_qry.filter_by(fixed_port_id=port_id)
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return floating_ip.first()
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def add_router_interface(self, context, router_id, interface_info):
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add_by_port, add_by_sub = self._validate_interface_info(interface_info)
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router = self._get_router(context, router_id)
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device_owner = self._get_device_owner(context, router)
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# This should be True unless adding an IPv6 prefix to an existing port
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new_port = True
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if add_by_port:
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port, subnets = self._add_interface_by_port(
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context, router, interface_info['port_id'], device_owner)
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elif add_by_sub:
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port, subnets, new_port = self._add_interface_by_subnet(
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context, router, interface_info['subnet_id'], device_owner)
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subnet = subnets[0]
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if new_port:
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if router.extra_attributes.distributed and router.gw_port:
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try:
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admin_context = context.elevated()
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self._add_csnat_router_interface_port(
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admin_context, router, port['network_id'],
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port['fixed_ips'][-1]['subnet_id'])
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except Exception:
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with excutils.save_and_reraise_exception():
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# we need to preserve the original state prior
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# the request by rolling back the port creation
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# that led to new_port=True
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self._core_plugin.delete_port(
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admin_context, port['id'])
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with context.session.begin(subtransactions=True):
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router_port = l3_db.RouterPort(
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port_id=port['id'],
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router_id=router.id,
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port_type=device_owner
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)
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context.session.add(router_port)
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# NOTE: For IPv6 additional subnets added to the same
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# network we need to update the CSNAT port with respective
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# IPv6 subnet
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elif subnet and port:
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fixed_ip = {'subnet_id': subnet['id']}
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if subnet['ip_version'] == 6:
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# Add new prefix to an existing ipv6 csnat port with the
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# same network id if one exists
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cs_port = self._find_router_port_by_network_and_device_owner(
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router, subnet['network_id'],
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l3_const.DEVICE_OWNER_ROUTER_SNAT)
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if cs_port:
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fixed_ips = list(cs_port['port']['fixed_ips'])
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fixed_ips.append(fixed_ip)
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updated_port = self._core_plugin.update_port(
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context.elevated(),
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cs_port['port_id'], {'port': {'fixed_ips': fixed_ips}})
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LOG.debug("CSNAT port updated for IPv6 subnet: "
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"%s", updated_port)
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router_interface_info = self._make_router_interface_info(
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router_id, port['tenant_id'], port['id'], subnet['id'],
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[subnet['id']])
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self.notify_router_interface_action(
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context, router_interface_info, 'add')
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return router_interface_info
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def _port_has_ipv6_address(self, port, csnat_port_check=True):
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"""Overridden to return False if DVR SNAT port."""
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if csnat_port_check:
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if port['device_owner'] == l3_const.DEVICE_OWNER_ROUTER_SNAT:
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return False
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return super(L3_NAT_with_dvr_db_mixin,
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self)._port_has_ipv6_address(port)
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def _find_router_port_by_network_and_device_owner(
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self, router, net_id, device_owner):
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for port in router.attached_ports:
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p = port['port']
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if (p['network_id'] == net_id and
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p['device_owner'] == device_owner and
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self._port_has_ipv6_address(p, csnat_port_check=False)):
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return port
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def _check_for_multiprefix_csnat_port_and_update(
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self, context, router, subnet, port):
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"""Checks if the csnat port contains multiple ipv6 prefixes.
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If the csnat port contains multiple ipv6 prefixes for the given
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network when a router interface is deleted, make sure we don't
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delete the port when a single subnet is deleted and just update
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it with the right fixed_ip.
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This function returns true if it is a multiprefix port.
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"""
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subnet_id = subnet['id']
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if router.gw_port:
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# If router has a gateway port, check if it has IPV6 subnet
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cs_port = (
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self._find_router_port_by_network_and_device_owner(
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router, subnet['network_id'],
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l3_const.DEVICE_OWNER_ROUTER_SNAT))
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if cs_port:
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fixed_ips = (
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[fixedip for fixedip in
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cs_port['port']['fixed_ips']
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if fixedip['subnet_id'] != subnet_id])
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if fixed_ips:
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# multiple prefix port - delete prefix from port
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self._core_plugin.update_port(
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context.elevated(),
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cs_port['port_id'], {'port': {'fixed_ips': fixed_ips}})
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return True
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return False
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def _check_dvr_router_remove_required_and_notify_agent(
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self, context, router, port, subnet):
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if router.extra_attributes.distributed:
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is_multiple_prefix_csport = (
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self._check_for_multiprefix_csnat_port_and_update(
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context, router, subnet, port))
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if not is_multiple_prefix_csport:
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# Single prefix port - go ahead and delete the port
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self.delete_csnat_router_interface_ports(
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context.elevated(), router, subnet_id=subnet['id'])
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plugin = manager.NeutronManager.get_service_plugins().get(
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constants.L3_ROUTER_NAT)
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l3_agents = plugin.get_l3_agents_hosting_routers(context,
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[router['id']])
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subnet_ids = plugin.get_subnet_ids_on_router(
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context, router['id'])
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if subnet_ids:
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for l3_agent in l3_agents:
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if not plugin.check_ports_exist_on_l3agent(
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context, l3_agent, subnet_ids):
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plugin.remove_router_from_l3_agent(
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context, l3_agent['id'], router['id'])
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router_interface_info = self._make_router_interface_info(
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router['id'], port['tenant_id'], port['id'], subnet['id'],
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[subnet['id']])
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self.notify_router_interface_action(
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context, router_interface_info, 'remove')
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return router_interface_info
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def remove_router_interface(self, context, router_id, interface_info):
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remove_by_port, remove_by_subnet = (
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self._validate_interface_info(interface_info, for_removal=True)
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)
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port_id = interface_info.get('port_id')
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subnet_id = interface_info.get('subnet_id')
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router = self._get_router(context, router_id)
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device_owner = self._get_device_owner(context, router)
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if remove_by_port:
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port, subnets = self._remove_interface_by_port(
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context, router_id, port_id, subnet_id, device_owner)
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# remove_by_subnet is not used here, because the validation logic of
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# _validate_interface_info ensures that at least one of remote_by_*
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# is True.
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else:
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port, subnets = self._remove_interface_by_subnet(
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context, router_id, subnet_id, device_owner)
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subnet = subnets[0]
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router_interface_info = (
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self._check_dvr_router_remove_required_and_notify_agent(
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context, router, port, subnet))
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return router_interface_info
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def _get_snat_sync_interfaces(self, context, router_ids):
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"""Query router interfaces that relate to list of router_ids."""
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if not router_ids:
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return []
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qry = context.session.query(l3_db.RouterPort)
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qry = qry.filter(
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l3_db.RouterPort.router_id.in_(router_ids),
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l3_db.RouterPort.port_type == l3_const.DEVICE_OWNER_ROUTER_SNAT
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)
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interfaces = collections.defaultdict(list)
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for rp in qry:
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interfaces[rp.router_id].append(
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self._core_plugin._make_port_dict(rp.port, None))
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LOG.debug("Return the SNAT ports: %s", interfaces)
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return interfaces
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def _build_routers_list(self, context, routers, gw_ports):
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# Perform a single query up front for all routers
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if not routers:
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return []
|
|
router_ids = [r['id'] for r in routers]
|
|
snat_binding = l3_dvrsched_db.CentralizedSnatL3AgentBinding
|
|
query = (context.session.query(snat_binding).
|
|
filter(snat_binding.router_id.in_(router_ids))).all()
|
|
bindings = dict((b.router_id, b) for b in query)
|
|
|
|
for rtr in routers:
|
|
gw_port_id = rtr['gw_port_id']
|
|
# Collect gw ports only if available
|
|
if gw_port_id and gw_ports.get(gw_port_id):
|
|
rtr['gw_port'] = gw_ports[gw_port_id]
|
|
if 'enable_snat' in rtr[l3.EXTERNAL_GW_INFO]:
|
|
rtr['enable_snat'] = (
|
|
rtr[l3.EXTERNAL_GW_INFO]['enable_snat'])
|
|
|
|
binding = bindings.get(rtr['id'])
|
|
if not binding:
|
|
rtr['gw_port_host'] = None
|
|
LOG.debug('No snat is bound to router %s', rtr['id'])
|
|
continue
|
|
|
|
rtr['gw_port_host'] = binding.l3_agent.host
|
|
|
|
return routers
|
|
|
|
def _process_routers(self, context, routers):
|
|
routers_dict = {}
|
|
snat_intfs_by_router_id = self._get_snat_sync_interfaces(
|
|
context, [r['id'] for r in routers])
|
|
for router in routers:
|
|
routers_dict[router['id']] = router
|
|
if router['gw_port_id']:
|
|
snat_router_intfs = snat_intfs_by_router_id[router['id']]
|
|
LOG.debug("SNAT ports returned: %s ", snat_router_intfs)
|
|
router[l3_const.SNAT_ROUTER_INTF_KEY] = snat_router_intfs
|
|
return routers_dict
|
|
|
|
def _process_floating_ips_dvr(self, context, routers_dict,
|
|
floating_ips, host, agent):
|
|
fip_sync_interfaces = None
|
|
LOG.debug("FIP Agent : %s ", agent.id)
|
|
for floating_ip in floating_ips:
|
|
router = routers_dict.get(floating_ip['router_id'])
|
|
if router:
|
|
router_floatingips = router.get(l3_const.FLOATINGIP_KEY, [])
|
|
if router['distributed']:
|
|
if floating_ip.get('host', None) != host:
|
|
continue
|
|
LOG.debug("Floating IP host: %s", floating_ip['host'])
|
|
router_floatingips.append(floating_ip)
|
|
router[l3_const.FLOATINGIP_KEY] = router_floatingips
|
|
if not fip_sync_interfaces:
|
|
fip_sync_interfaces = self._get_fip_sync_interfaces(
|
|
context, agent.id)
|
|
LOG.debug("FIP Agent ports: %s", fip_sync_interfaces)
|
|
router[l3_const.FLOATINGIP_AGENT_INTF_KEY] = (
|
|
fip_sync_interfaces)
|
|
|
|
def _get_fip_sync_interfaces(self, context, fip_agent_id):
|
|
"""Query router interfaces that relate to list of router_ids."""
|
|
if not fip_agent_id:
|
|
return []
|
|
filters = {'device_id': [fip_agent_id],
|
|
'device_owner': [l3_const.DEVICE_OWNER_AGENT_GW]}
|
|
interfaces = self._core_plugin.get_ports(context.elevated(), filters)
|
|
LOG.debug("Return the FIP ports: %s ", interfaces)
|
|
return interfaces
|
|
|
|
def _get_dvr_sync_data(self, context, host, agent, router_ids=None,
|
|
active=None):
|
|
routers, interfaces, floating_ips = self._get_router_info_list(
|
|
context, router_ids=router_ids, active=active,
|
|
device_owners=l3_const.ROUTER_INTERFACE_OWNERS)
|
|
dvr_router_ids = set(router['id'] for router in routers
|
|
if is_distributed_router(router))
|
|
floating_ip_port_ids = [fip['port_id'] for fip in floating_ips
|
|
if fip['router_id'] in dvr_router_ids]
|
|
if floating_ip_port_ids:
|
|
port_filter = {portbindings.HOST_ID: [host],
|
|
'id': floating_ip_port_ids}
|
|
ports = self._core_plugin.get_ports(context, port_filter)
|
|
port_dict = dict((port['id'], port) for port in ports)
|
|
# Add the port binding host to the floatingip dictionary
|
|
for fip in floating_ips:
|
|
vm_port = port_dict.get(fip['port_id'], None)
|
|
if vm_port:
|
|
fip['host'] = self._get_vm_port_hostid(context,
|
|
fip['port_id'],
|
|
port=vm_port)
|
|
routers_dict = self._process_routers(context, routers)
|
|
self._process_floating_ips_dvr(context, routers_dict,
|
|
floating_ips, host, agent)
|
|
ports_to_populate = []
|
|
for router in routers_dict.values():
|
|
if router.get('gw_port'):
|
|
ports_to_populate.append(router['gw_port'])
|
|
if router.get(l3_const.FLOATINGIP_AGENT_INTF_KEY):
|
|
ports_to_populate += router[l3_const.FLOATINGIP_AGENT_INTF_KEY]
|
|
if router.get(l3_const.SNAT_ROUTER_INTF_KEY):
|
|
ports_to_populate += router[l3_const.SNAT_ROUTER_INTF_KEY]
|
|
ports_to_populate += interfaces
|
|
self._populate_subnets_for_ports(context, ports_to_populate)
|
|
self._process_interfaces(routers_dict, interfaces)
|
|
return list(routers_dict.values())
|
|
|
|
def _get_vm_port_hostid(self, context, port_id, port=None):
|
|
"""Return the portbinding host_id."""
|
|
vm_port_db = port or self._core_plugin.get_port(context, port_id)
|
|
device_owner = vm_port_db['device_owner'] if vm_port_db else ""
|
|
if (n_utils.is_dvr_serviced(device_owner) or
|
|
device_owner == l3_const.DEVICE_OWNER_AGENT_GW):
|
|
return vm_port_db[portbindings.HOST_ID]
|
|
|
|
def _get_agent_gw_ports_exist_for_network(
|
|
self, context, network_id, host, agent_id):
|
|
"""Return agent gw port if exist, or None otherwise."""
|
|
if not network_id:
|
|
LOG.debug("Network not specified")
|
|
return
|
|
|
|
filters = {
|
|
'network_id': [network_id],
|
|
'device_id': [agent_id],
|
|
'device_owner': [l3_const.DEVICE_OWNER_AGENT_GW]
|
|
}
|
|
ports = self._core_plugin.get_ports(context, filters)
|
|
if ports:
|
|
return ports[0]
|
|
|
|
def _get_router_ids(self, context):
|
|
"""Function to retrieve router IDs for a context without joins"""
|
|
query = self._model_query(context, l3_db.Router.id)
|
|
return [row[0] for row in query]
|
|
|
|
def delete_floatingip_agent_gateway_port(
|
|
self, context, host_id, ext_net_id):
|
|
"""Function to delete FIP gateway port with given ext_net_id."""
|
|
# delete any fip agent gw port
|
|
device_filter = {'device_owner': [l3_const.DEVICE_OWNER_AGENT_GW],
|
|
'network_id': [ext_net_id]}
|
|
ports = self._core_plugin.get_ports(context,
|
|
filters=device_filter)
|
|
for p in ports:
|
|
if not host_id or p[portbindings.HOST_ID] == host_id:
|
|
self._core_plugin.ipam.delete_port(context, p['id'])
|
|
if host_id:
|
|
return
|
|
|
|
def create_fip_agent_gw_port_if_not_exists(
|
|
self, context, network_id, host):
|
|
"""Function to return the FIP Agent GW port.
|
|
|
|
This function will create a FIP Agent GW port
|
|
if required. If the port already exists, it
|
|
will return the existing port and will not
|
|
create a new one.
|
|
"""
|
|
l3_agent_db = self._get_agent_by_type_and_host(
|
|
context, l3_const.AGENT_TYPE_L3, host)
|
|
if l3_agent_db:
|
|
LOG.debug("Agent ID exists: %s", l3_agent_db['id'])
|
|
f_port = self._get_agent_gw_ports_exist_for_network(
|
|
context, network_id, host, l3_agent_db['id'])
|
|
if not f_port:
|
|
LOG.info(_LI('Agent Gateway port does not exist,'
|
|
' so create one: %s'), f_port)
|
|
port_data = {'tenant_id': '',
|
|
'network_id': network_id,
|
|
'device_id': l3_agent_db['id'],
|
|
'device_owner': l3_const.DEVICE_OWNER_AGENT_GW,
|
|
'binding:host_id': host,
|
|
'admin_state_up': True,
|
|
'name': ''}
|
|
agent_port = p_utils.create_port(self._core_plugin, context,
|
|
{'port': port_data})
|
|
if agent_port:
|
|
self._populate_subnets_for_ports(context, [agent_port])
|
|
return agent_port
|
|
msg = _("Unable to create the Agent Gateway Port")
|
|
raise n_exc.BadRequest(resource='router', msg=msg)
|
|
else:
|
|
self._populate_subnets_for_ports(context, [f_port])
|
|
return f_port
|
|
|
|
def _get_snat_interface_ports_for_router(self, context, router_id):
|
|
"""Return all existing snat_router_interface ports."""
|
|
qry = context.session.query(l3_db.RouterPort)
|
|
qry = qry.filter_by(
|
|
router_id=router_id,
|
|
port_type=l3_const.DEVICE_OWNER_ROUTER_SNAT
|
|
)
|
|
|
|
ports = [self._core_plugin._make_port_dict(rp.port, None)
|
|
for rp in qry]
|
|
return ports
|
|
|
|
def _add_csnat_router_interface_port(
|
|
self, context, router, network_id, subnet_id, do_pop=True):
|
|
"""Add SNAT interface to the specified router and subnet."""
|
|
port_data = {'tenant_id': '',
|
|
'network_id': network_id,
|
|
'fixed_ips': [{'subnet_id': subnet_id}],
|
|
'device_id': router.id,
|
|
'device_owner': l3_const.DEVICE_OWNER_ROUTER_SNAT,
|
|
'admin_state_up': True,
|
|
'name': ''}
|
|
snat_port = p_utils.create_port(self._core_plugin, context,
|
|
{'port': port_data})
|
|
if not snat_port:
|
|
msg = _("Unable to create the SNAT Interface Port")
|
|
raise n_exc.BadRequest(resource='router', msg=msg)
|
|
|
|
with context.session.begin(subtransactions=True):
|
|
router_port = l3_db.RouterPort(
|
|
port_id=snat_port['id'],
|
|
router_id=router.id,
|
|
port_type=l3_const.DEVICE_OWNER_ROUTER_SNAT
|
|
)
|
|
context.session.add(router_port)
|
|
|
|
if do_pop:
|
|
return self._populate_subnets_for_ports(context, [snat_port])
|
|
return snat_port
|
|
|
|
def _create_snat_intf_ports_if_not_exists(self, context, router):
|
|
"""Function to return the snat interface port list.
|
|
|
|
This function will return the snat interface port list
|
|
if it exists. If the port does not exist it will create
|
|
new ports and then return the list.
|
|
"""
|
|
port_list = self._get_snat_interface_ports_for_router(
|
|
context, router.id)
|
|
if port_list:
|
|
self._populate_subnets_for_ports(context, port_list)
|
|
return port_list
|
|
port_list = []
|
|
|
|
int_ports = (
|
|
rp.port for rp in
|
|
router.attached_ports.filter_by(
|
|
port_type=l3_const.DEVICE_OWNER_DVR_INTERFACE
|
|
)
|
|
)
|
|
LOG.info(_LI('SNAT interface port list does not exist,'
|
|
' so create one: %s'), port_list)
|
|
for intf in int_ports:
|
|
if intf.fixed_ips:
|
|
# Passing the subnet for the port to make sure the IP's
|
|
# are assigned on the right subnet if multiple subnet
|
|
# exists
|
|
snat_port = self._add_csnat_router_interface_port(
|
|
context, router, intf['network_id'],
|
|
intf['fixed_ips'][0]['subnet_id'], do_pop=False)
|
|
port_list.append(snat_port)
|
|
if port_list:
|
|
self._populate_subnets_for_ports(context, port_list)
|
|
return port_list
|
|
|
|
def dvr_vmarp_table_update(self, context, port_dict, action):
|
|
"""Notify L3 agents of VM ARP table changes.
|
|
|
|
When a VM goes up or down, look for one DVR router on the port's
|
|
subnet, and send the VM's ARP details to all L3 agents hosting the
|
|
router.
|
|
"""
|
|
|
|
# Check this is a valid VM or service port
|
|
if not (n_utils.is_dvr_serviced(port_dict['device_owner']) and
|
|
port_dict['fixed_ips']):
|
|
return
|
|
ip_address = port_dict['fixed_ips'][0]['ip_address']
|
|
subnet = port_dict['fixed_ips'][0]['subnet_id']
|
|
filters = {'fixed_ips': {'subnet_id': [subnet]}}
|
|
ports = self._core_plugin.get_ports(context, filters=filters)
|
|
for port in ports:
|
|
if port['device_owner'] == l3_const.DEVICE_OWNER_DVR_INTERFACE:
|
|
router_id = port['device_id']
|
|
router_dict = self._get_router(context, router_id)
|
|
if router_dict.extra_attributes.distributed:
|
|
arp_table = {'ip_address': ip_address,
|
|
'mac_address': port_dict['mac_address'],
|
|
'subnet_id': subnet}
|
|
if action == "add":
|
|
notify_action = self.l3_rpc_notifier.add_arp_entry
|
|
elif action == "del":
|
|
notify_action = self.l3_rpc_notifier.del_arp_entry
|
|
notify_action(context, router_id, arp_table)
|
|
return
|
|
|
|
def delete_csnat_router_interface_ports(self, context,
|
|
router, subnet_id=None):
|
|
# Each csnat router interface port is associated
|
|
# with a subnet, so we need to pass the subnet id to
|
|
# delete the right ports.
|
|
|
|
# TODO(markmcclain): This is suboptimal but was left to reduce
|
|
# changeset size since it is late in cycle
|
|
ports = [
|
|
rp.port.id for rp in
|
|
router.attached_ports.filter_by(
|
|
port_type=l3_const.DEVICE_OWNER_ROUTER_SNAT)
|
|
if rp.port
|
|
]
|
|
|
|
c_snat_ports = self._core_plugin.get_ports(
|
|
context,
|
|
filters={'id': ports}
|
|
)
|
|
for p in c_snat_ports:
|
|
if subnet_id is None:
|
|
self._core_plugin.delete_port(context,
|
|
p['id'],
|
|
l3_port_check=False)
|
|
else:
|
|
if p['fixed_ips'][0]['subnet_id'] == subnet_id:
|
|
LOG.debug("Subnet matches: %s", subnet_id)
|
|
self._core_plugin.delete_port(context,
|
|
p['id'],
|
|
l3_port_check=False)
|
|
|
|
def create_floatingip(self, context, floatingip,
|
|
initial_status=l3_const.FLOATINGIP_STATUS_ACTIVE):
|
|
floating_ip = self._create_floatingip(
|
|
context, floatingip, initial_status)
|
|
self._notify_floating_ip_change(context, floating_ip)
|
|
return floating_ip
|
|
|
|
def _notify_floating_ip_change(self, context, floating_ip):
|
|
router_id = floating_ip['router_id']
|
|
fixed_port_id = floating_ip['port_id']
|
|
# we need to notify agents only in case Floating IP is associated
|
|
if not router_id or not fixed_port_id:
|
|
return
|
|
|
|
try:
|
|
# using admin context as router may belong to admin tenant
|
|
router = self._get_router(context.elevated(), router_id)
|
|
except l3.RouterNotFound:
|
|
LOG.warning(_LW("Router %s was not found. "
|
|
"Skipping agent notification."),
|
|
router_id)
|
|
return
|
|
|
|
if is_distributed_router(router):
|
|
host = self._get_vm_port_hostid(context, fixed_port_id)
|
|
self.l3_rpc_notifier.routers_updated_on_host(
|
|
context, [router_id], host)
|
|
else:
|
|
self.notify_router_updated(context, router_id)
|
|
|
|
def update_floatingip(self, context, id, floatingip):
|
|
old_floatingip, floatingip = self._update_floatingip(
|
|
context, id, floatingip)
|
|
self._notify_floating_ip_change(context, old_floatingip)
|
|
if (floatingip['router_id'] != old_floatingip['router_id'] or
|
|
floatingip['port_id'] != old_floatingip['port_id']):
|
|
self._notify_floating_ip_change(context, floatingip)
|
|
return floatingip
|
|
|
|
def delete_floatingip(self, context, id):
|
|
floating_ip = self._delete_floatingip(context, id)
|
|
self._notify_floating_ip_change(context, floating_ip)
|
|
|
|
|
|
def is_distributed_router(router):
|
|
"""Return True if router to be handled is distributed."""
|
|
try:
|
|
# See if router is a DB object first
|
|
requested_router_type = router.extra_attributes.distributed
|
|
except AttributeError:
|
|
# if not, try to see if it is a request body
|
|
requested_router_type = router.get('distributed')
|
|
if attributes.is_attr_set(requested_router_type):
|
|
return requested_router_type
|
|
return cfg.CONF.router_distributed
|