47713f5870
RFC4861 allows us to specify the Link MTU using IPv6 RAs. When advertise_mtu is set in the config, this patch supports advertising the LinkMTU using Router Advertisements. Partially Implements: blueprint mtu-selection-and-advertisement Closes-Bug: #1495444 Change-Id: I50d40cd3b8eabf1899461a80e729d5bd1e727f28
1654 lines
76 KiB
Python
1654 lines
76 KiB
Python
# Copyright 2012 VMware, Inc. 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 itertools
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import netaddr
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from oslo_log import log as logging
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from oslo_utils import excutils
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from oslo_utils import uuidutils
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import six
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import sqlalchemy as sa
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from sqlalchemy import orm
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from sqlalchemy.orm import exc
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from neutron._i18n import _, _LI
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from neutron.api.rpc.agentnotifiers import l3_rpc_agent_api
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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_constants
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from neutron.common import exceptions as n_exc
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from neutron.common import ipv6_utils
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from neutron.common import rpc as n_rpc
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from neutron.common import utils
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from neutron.db import l3_agentschedulers_db as l3_agt
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from neutron.db import model_base
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from neutron.db import models_v2
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from neutron.extensions import external_net
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from neutron.extensions import l3
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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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DEVICE_OWNER_ROUTER_INTF = l3_constants.DEVICE_OWNER_ROUTER_INTF
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DEVICE_OWNER_ROUTER_GW = l3_constants.DEVICE_OWNER_ROUTER_GW
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DEVICE_OWNER_FLOATINGIP = l3_constants.DEVICE_OWNER_FLOATINGIP
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EXTERNAL_GW_INFO = l3.EXTERNAL_GW_INFO
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# Maps API field to DB column
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# API parameter name and Database column names may differ.
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# Useful to keep the filtering between API and Database.
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API_TO_DB_COLUMN_MAP = {'port_id': 'fixed_port_id'}
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CORE_ROUTER_ATTRS = ('id', 'name', 'tenant_id', 'admin_state_up', 'status')
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class RouterPort(model_base.BASEV2):
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router_id = sa.Column(
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sa.String(36),
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sa.ForeignKey('routers.id', ondelete="CASCADE"),
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primary_key=True)
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port_id = sa.Column(
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sa.String(36),
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sa.ForeignKey('ports.id', ondelete="CASCADE"),
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primary_key=True)
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# The port_type attribute is redundant as the port table already specifies
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# it in DEVICE_OWNER.However, this redundancy enables more efficient
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# queries on router ports, and also prevents potential error-prone
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# conditions which might originate from users altering the DEVICE_OWNER
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# property of router ports.
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port_type = sa.Column(sa.String(attributes.DEVICE_OWNER_MAX_LEN))
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port = orm.relationship(
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models_v2.Port,
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backref=orm.backref('routerport', uselist=False, cascade="all,delete"),
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lazy='joined')
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class Router(model_base.HasStandardAttributes, model_base.BASEV2,
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model_base.HasId, model_base.HasTenant):
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"""Represents a v2 neutron router."""
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name = sa.Column(sa.String(attributes.NAME_MAX_LEN))
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status = sa.Column(sa.String(16))
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admin_state_up = sa.Column(sa.Boolean)
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gw_port_id = sa.Column(sa.String(36), sa.ForeignKey('ports.id'))
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gw_port = orm.relationship(models_v2.Port, lazy='joined')
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attached_ports = orm.relationship(
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RouterPort,
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backref='router',
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lazy='dynamic')
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l3_agents = orm.relationship(
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'Agent', lazy='joined', viewonly=True,
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secondary=l3_agt.RouterL3AgentBinding.__table__)
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class FloatingIP(model_base.HasStandardAttributes, model_base.BASEV2,
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model_base.HasId, model_base.HasTenant):
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"""Represents a floating IP address.
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This IP address may or may not be allocated to a tenant, and may or
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may not be associated with an internal port/ip address/router.
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"""
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floating_ip_address = sa.Column(sa.String(64), nullable=False)
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floating_network_id = sa.Column(sa.String(36), nullable=False)
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floating_port_id = sa.Column(sa.String(36),
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sa.ForeignKey('ports.id', ondelete="CASCADE"),
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nullable=False)
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# The ORM-level "delete" cascade relationship between port and floating_ip
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# is required for causing the in-Python event "after_delete" that needs for
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# proper quota management in case when cascade removal of the floating_ip
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# happens after removal of the floating_port
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port = orm.relationship(models_v2.Port,
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backref=orm.backref('floating_ips',
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cascade='all,delete-orphan'),
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foreign_keys='FloatingIP.floating_port_id')
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fixed_port_id = sa.Column(sa.String(36), sa.ForeignKey('ports.id'))
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fixed_ip_address = sa.Column(sa.String(64))
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router_id = sa.Column(sa.String(36), sa.ForeignKey('routers.id'))
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# Additional attribute for keeping track of the router where the floating
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# ip was associated in order to be able to ensure consistency even if an
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# asynchronous backend is unavailable when the floating IP is disassociated
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last_known_router_id = sa.Column(sa.String(36))
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status = sa.Column(sa.String(16))
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router = orm.relationship(Router, backref='floating_ips')
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class L3_NAT_dbonly_mixin(l3.RouterPluginBase):
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"""Mixin class to add L3/NAT router methods to db_base_plugin_v2."""
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router_device_owners = (
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DEVICE_OWNER_ROUTER_INTF,
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DEVICE_OWNER_ROUTER_GW,
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DEVICE_OWNER_FLOATINGIP
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)
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@property
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def _core_plugin(self):
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return manager.NeutronManager.get_plugin()
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def _get_router(self, context, router_id):
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try:
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router = self._get_by_id(context, Router, router_id)
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except exc.NoResultFound:
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raise l3.RouterNotFound(router_id=router_id)
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return router
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def _make_router_dict(self, router, fields=None, process_extensions=True):
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res = dict((key, router[key]) for key in CORE_ROUTER_ATTRS)
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if router['gw_port_id']:
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ext_gw_info = {
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'network_id': router.gw_port['network_id'],
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'external_fixed_ips': [{'subnet_id': ip["subnet_id"],
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'ip_address': ip["ip_address"]}
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for ip in router.gw_port['fixed_ips']]}
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else:
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ext_gw_info = None
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res.update({
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EXTERNAL_GW_INFO: ext_gw_info,
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'gw_port_id': router['gw_port_id'],
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})
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# NOTE(salv-orlando): The following assumes this mixin is used in a
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# class inheriting from CommonDbMixin, which is true for all existing
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# plugins.
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if process_extensions:
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self._apply_dict_extend_functions(l3.ROUTERS, res, router)
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return self._fields(res, fields)
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def _create_router_db(self, context, router, tenant_id):
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"""Create the DB object."""
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with context.session.begin(subtransactions=True):
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# pre-generate id so it will be available when
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# configuring external gw port
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router_db = Router(id=(router.get('id') or
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uuidutils.generate_uuid()),
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tenant_id=tenant_id,
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name=router['name'],
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admin_state_up=router['admin_state_up'],
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status="ACTIVE")
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context.session.add(router_db)
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return router_db
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def create_router(self, context, router):
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r = router['router']
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gw_info = r.pop(EXTERNAL_GW_INFO, None)
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router_db = self._create_router_db(context, r, r['tenant_id'])
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try:
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if gw_info:
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self._update_router_gw_info(context, router_db['id'],
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gw_info, router=router_db)
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except Exception:
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with excutils.save_and_reraise_exception():
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LOG.debug("Could not update gateway info, deleting router.")
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self.delete_router(context, router_db.id)
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return self._make_router_dict(router_db)
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def _update_router_db(self, context, router_id, data):
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"""Update the DB object."""
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with context.session.begin(subtransactions=True):
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router_db = self._get_router(context, router_id)
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if data:
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router_db.update(data)
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return router_db
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def update_router(self, context, id, router):
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r = router['router']
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gw_info = r.pop(EXTERNAL_GW_INFO, attributes.ATTR_NOT_SPECIFIED)
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# check whether router needs and can be rescheduled to the proper
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# l3 agent (associated with given external network);
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# do check before update in DB as an exception will be raised
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# in case no proper l3 agent found
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if gw_info != attributes.ATTR_NOT_SPECIFIED:
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candidates = self._check_router_needs_rescheduling(
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context, id, gw_info)
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# Update the gateway outside of the DB update since it involves L2
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# calls that don't make sense to rollback and may cause deadlocks
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# in a transaction.
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self._update_router_gw_info(context, id, gw_info)
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else:
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candidates = None
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router_db = self._update_router_db(context, id, r)
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if candidates:
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l3_plugin = manager.NeutronManager.get_service_plugins().get(
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constants.L3_ROUTER_NAT)
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l3_plugin.reschedule_router(context, id, candidates)
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return self._make_router_dict(router_db)
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def _check_router_needs_rescheduling(self, context, router_id, gw_info):
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"""Checks whether router's l3 agent can handle the given network
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When external_network_bridge is set, each L3 agent can be associated
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with at most one external network. If router's new external gateway
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is on other network then the router needs to be rescheduled to the
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proper l3 agent.
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If external_network_bridge is not set then the agent
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can support multiple external networks and rescheduling is not needed
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:return: list of candidate agents if rescheduling needed,
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None otherwise; raises exception if there is no eligible l3 agent
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associated with target external network
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"""
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# TODO(obondarev): rethink placement of this func as l3 db manager is
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# not really a proper place for agent scheduling stuff
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network_id = gw_info.get('network_id') if gw_info else None
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if not network_id:
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return
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nets = self._core_plugin.get_networks(
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context, {external_net.EXTERNAL: [True]})
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# nothing to do if there is only one external network
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if len(nets) <= 1:
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return
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# first get plugin supporting l3 agent scheduling
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# (either l3 service plugin or core_plugin)
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l3_plugin = manager.NeutronManager.get_service_plugins().get(
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constants.L3_ROUTER_NAT)
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if (not utils.is_extension_supported(
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l3_plugin,
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l3_constants.L3_AGENT_SCHEDULER_EXT_ALIAS) or
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l3_plugin.router_scheduler is None):
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# that might mean that we are dealing with non-agent-based
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# implementation of l3 services
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return
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cur_agents = l3_plugin.list_l3_agents_hosting_router(
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context, router_id)['agents']
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for agent in cur_agents:
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ext_net_id = agent['configurations'].get(
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'gateway_external_network_id')
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ext_bridge = agent['configurations'].get(
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'external_network_bridge', 'br-ex')
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if (ext_net_id == network_id or
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(not ext_net_id and not ext_bridge)):
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return
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# otherwise find l3 agent with matching gateway_external_network_id
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active_agents = l3_plugin.get_l3_agents(context, active=True)
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router = {
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'id': router_id,
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'external_gateway_info': {'network_id': network_id}
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}
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candidates = l3_plugin.get_l3_agent_candidates(context,
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router,
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active_agents)
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if not candidates:
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msg = (_('No eligible l3 agent associated with external network '
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'%s found') % network_id)
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raise n_exc.BadRequest(resource='router', msg=msg)
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return candidates
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def _create_router_gw_port(self, context, router, network_id, ext_ips):
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# Port has no 'tenant-id', as it is hidden from user
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port_data = {'tenant_id': '', # intentionally not set
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'network_id': network_id,
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'fixed_ips': ext_ips or attributes.ATTR_NOT_SPECIFIED,
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'device_id': router['id'],
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'device_owner': DEVICE_OWNER_ROUTER_GW,
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'admin_state_up': True,
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'name': ''}
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gw_port = p_utils.create_port(self._core_plugin,
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context.elevated(), {'port': port_data})
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if not gw_port['fixed_ips']:
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LOG.debug('No IPs available for external network %s',
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network_id)
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with context.session.begin(subtransactions=True):
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router.gw_port = self._core_plugin._get_port(context.elevated(),
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gw_port['id'])
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router_port = RouterPort(
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router_id=router.id,
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port_id=gw_port['id'],
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port_type=DEVICE_OWNER_ROUTER_GW
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)
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context.session.add(router)
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context.session.add(router_port)
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def _validate_gw_info(self, context, gw_port, info, ext_ips):
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network_id = info['network_id'] if info else None
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if network_id:
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network_db = self._core_plugin._get_network(context, network_id)
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if not network_db.external:
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msg = _("Network %s is not an external network") % network_id
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raise n_exc.BadRequest(resource='router', msg=msg)
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if ext_ips:
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subnets = self._core_plugin.get_subnets_by_network(context,
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network_id)
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for s in subnets:
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if not s['gateway_ip']:
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continue
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for ext_ip in ext_ips:
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if ext_ip.get('ip_address') == s['gateway_ip']:
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msg = _("External IP %s is the same as the "
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"gateway IP") % ext_ip.get('ip_address')
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raise n_exc.BadRequest(resource='router', msg=msg)
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return network_id
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def _delete_current_gw_port(self, context, router_id, router,
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new_network_id):
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"""Delete gw port if attached to an old network."""
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port_requires_deletion = (
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router.gw_port and router.gw_port['network_id'] != new_network_id)
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if not port_requires_deletion:
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return
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admin_ctx = context.elevated()
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old_network_id = router.gw_port['network_id']
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if self.get_floatingips_count(
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admin_ctx, {'router_id': [router_id]}):
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raise l3.RouterExternalGatewayInUseByFloatingIp(
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router_id=router_id, net_id=router.gw_port['network_id'])
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with context.session.begin(subtransactions=True):
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gw_port = router.gw_port
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router.gw_port = None
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context.session.add(router)
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context.session.expire(gw_port)
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self._check_router_gw_port_in_use(context, router_id)
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self._core_plugin.delete_port(
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admin_ctx, gw_port['id'], l3_port_check=False)
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registry.notify(resources.ROUTER_GATEWAY,
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events.AFTER_DELETE, self,
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router_id=router_id,
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network_id=old_network_id)
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def _check_router_gw_port_in_use(self, context, router_id):
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try:
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kwargs = {'context': context, 'router_id': router_id}
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registry.notify(
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resources.ROUTER_GATEWAY, events.BEFORE_DELETE, 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_id, reason=e)
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def _create_gw_port(self, context, router_id, router, new_network_id,
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ext_ips):
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new_valid_gw_port_attachment = (
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new_network_id and (not router.gw_port or
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router.gw_port['network_id'] != new_network_id))
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if new_valid_gw_port_attachment:
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subnets = self._core_plugin.get_subnets_by_network(context,
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new_network_id)
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for subnet in subnets:
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self._check_for_dup_router_subnet(context, router,
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new_network_id, subnet['id'],
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subnet['cidr'])
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self._create_router_gw_port(context, router,
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new_network_id, ext_ips)
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registry.notify(resources.ROUTER_GATEWAY,
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events.AFTER_CREATE,
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self._create_gw_port,
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gw_ips=ext_ips,
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network_id=new_network_id,
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router_id=router_id)
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def _update_current_gw_port(self, context, router_id, router, ext_ips):
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self._core_plugin.update_port(context, router.gw_port['id'], {'port':
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{'fixed_ips': ext_ips}})
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context.session.expire(router.gw_port)
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def _update_router_gw_info(self, context, router_id, info, router=None):
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# TODO(salvatore-orlando): guarantee atomic behavior also across
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# operations that span beyond the model classes handled by this
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# class (e.g.: delete_port)
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router = router or self._get_router(context, router_id)
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gw_port = router.gw_port
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ext_ips = info.get('external_fixed_ips') if info else []
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ext_ip_change = self._check_for_external_ip_change(
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context, gw_port, ext_ips)
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network_id = self._validate_gw_info(context, gw_port, info, ext_ips)
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if gw_port and ext_ip_change and gw_port['network_id'] == network_id:
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self._update_current_gw_port(context, router_id, router,
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ext_ips)
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else:
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self._delete_current_gw_port(context, router_id, router,
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network_id)
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self._create_gw_port(context, router_id, router, network_id,
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ext_ips)
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def _check_for_external_ip_change(self, context, gw_port, ext_ips):
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# determine if new external IPs differ from the existing fixed_ips
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if not ext_ips:
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# no external_fixed_ips were included
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return False
|
|
if not gw_port:
|
|
return True
|
|
|
|
subnet_ids = set(ip['subnet_id'] for ip in gw_port['fixed_ips'])
|
|
new_subnet_ids = set(f['subnet_id'] for f in ext_ips
|
|
if f.get('subnet_id'))
|
|
subnet_change = not new_subnet_ids == subnet_ids
|
|
if subnet_change:
|
|
return True
|
|
ip_addresses = set(ip['ip_address'] for ip in gw_port['fixed_ips'])
|
|
new_ip_addresses = set(f['ip_address'] for f in ext_ips
|
|
if f.get('ip_address'))
|
|
ip_address_change = not ip_addresses == new_ip_addresses
|
|
return ip_address_change
|
|
|
|
def _ensure_router_not_in_use(self, context, router_id):
|
|
"""Ensure that no internal network interface is attached
|
|
to the router.
|
|
"""
|
|
router = self._get_router(context, router_id)
|
|
device_owner = self._get_device_owner(context, router)
|
|
if any(rp.port_type == device_owner
|
|
for rp in router.attached_ports.all()):
|
|
raise l3.RouterInUse(router_id=router_id)
|
|
return router
|
|
|
|
def delete_router(self, context, id):
|
|
|
|
#TODO(nati) Refactor here when we have router insertion model
|
|
router = self._ensure_router_not_in_use(context, id)
|
|
self._delete_current_gw_port(context, id, router, None)
|
|
|
|
router_ports = router.attached_ports.all()
|
|
for rp in router_ports:
|
|
self._core_plugin.delete_port(context.elevated(),
|
|
rp.port.id,
|
|
l3_port_check=False)
|
|
with context.session.begin(subtransactions=True):
|
|
context.session.delete(router)
|
|
|
|
def get_router(self, context, id, fields=None):
|
|
router = self._get_router(context, id)
|
|
return self._make_router_dict(router, fields)
|
|
|
|
def get_routers(self, context, filters=None, fields=None,
|
|
sorts=None, limit=None, marker=None,
|
|
page_reverse=False):
|
|
marker_obj = self._get_marker_obj(context, 'router', limit, marker)
|
|
return self._get_collection(context, Router,
|
|
self._make_router_dict,
|
|
filters=filters, fields=fields,
|
|
sorts=sorts,
|
|
limit=limit,
|
|
marker_obj=marker_obj,
|
|
page_reverse=page_reverse)
|
|
|
|
def get_routers_count(self, context, filters=None):
|
|
return self._get_collection_count(context, Router,
|
|
filters=filters)
|
|
|
|
def _check_for_dup_router_subnet(self, context, router,
|
|
network_id, subnet_id, subnet_cidr):
|
|
try:
|
|
# It's possible these ports are on the same network, but
|
|
# different subnets.
|
|
new_ipnet = netaddr.IPNetwork(subnet_cidr)
|
|
for p in (rp.port for rp in router.attached_ports):
|
|
for ip in p['fixed_ips']:
|
|
if ip['subnet_id'] == subnet_id:
|
|
msg = (_("Router already has a port on subnet %s")
|
|
% subnet_id)
|
|
raise n_exc.BadRequest(resource='router', msg=msg)
|
|
# Ignore temporary Prefix Delegation CIDRs
|
|
if subnet_cidr == l3_constants.PROVISIONAL_IPV6_PD_PREFIX:
|
|
continue
|
|
sub_id = ip['subnet_id']
|
|
cidr = self._core_plugin.get_subnet(context.elevated(),
|
|
sub_id)['cidr']
|
|
ipnet = netaddr.IPNetwork(cidr)
|
|
match1 = netaddr.all_matching_cidrs(new_ipnet, [cidr])
|
|
match2 = netaddr.all_matching_cidrs(ipnet, [subnet_cidr])
|
|
if match1 or match2:
|
|
data = {'subnet_cidr': subnet_cidr,
|
|
'subnet_id': subnet_id,
|
|
'cidr': cidr,
|
|
'sub_id': sub_id}
|
|
msg = (_("Cidr %(subnet_cidr)s of subnet "
|
|
"%(subnet_id)s overlaps with cidr %(cidr)s "
|
|
"of subnet %(sub_id)s") % data)
|
|
raise n_exc.BadRequest(resource='router', msg=msg)
|
|
except exc.NoResultFound:
|
|
pass
|
|
|
|
def _get_device_owner(self, context, router=None):
|
|
"""Get device_owner for the specified router."""
|
|
# NOTE(armando-migliaccio): in the base case this is invariant
|
|
return DEVICE_OWNER_ROUTER_INTF
|
|
|
|
def _validate_interface_info(self, interface_info, for_removal=False):
|
|
port_id_specified = interface_info and 'port_id' in interface_info
|
|
subnet_id_specified = interface_info and 'subnet_id' in interface_info
|
|
if not (port_id_specified or subnet_id_specified):
|
|
msg = _("Either subnet_id or port_id must be specified")
|
|
raise n_exc.BadRequest(resource='router', msg=msg)
|
|
if not for_removal:
|
|
if port_id_specified and subnet_id_specified:
|
|
msg = _("Cannot specify both subnet-id and port-id")
|
|
raise n_exc.BadRequest(resource='router', msg=msg)
|
|
return port_id_specified, subnet_id_specified
|
|
|
|
def _check_router_port(self, context, port_id, device_id):
|
|
port = self._core_plugin.get_port(context, port_id)
|
|
if port['device_id'] != device_id:
|
|
raise n_exc.PortInUse(net_id=port['network_id'],
|
|
port_id=port['id'],
|
|
device_id=port['device_id'])
|
|
if not port['fixed_ips']:
|
|
msg = _('Router port must have at least one fixed IP')
|
|
raise n_exc.BadRequest(resource='router', msg=msg)
|
|
return port
|
|
|
|
def _add_interface_by_port(self, context, router, port_id, owner):
|
|
# Update owner before actual process in order to avoid the
|
|
# case where a port might get attached to a router without the
|
|
# owner successfully updating due to an unavailable backend.
|
|
self._check_router_port(context, port_id, '')
|
|
self._core_plugin.update_port(
|
|
context, port_id, {'port': {'device_id': router.id,
|
|
'device_owner': owner}})
|
|
|
|
with context.session.begin(subtransactions=True):
|
|
# check again within transaction to mitigate race
|
|
port = self._check_router_port(context, port_id, router.id)
|
|
|
|
# Only allow one router port with IPv6 subnets per network id
|
|
if self._port_has_ipv6_address(port):
|
|
for existing_port in (rp.port for rp in router.attached_ports):
|
|
if (existing_port['network_id'] == port['network_id'] and
|
|
self._port_has_ipv6_address(existing_port)):
|
|
msg = _("Cannot have multiple router ports with the "
|
|
"same network id if both contain IPv6 "
|
|
"subnets. Existing port %(p)s has IPv6 "
|
|
"subnet(s) and network id %(nid)s")
|
|
raise n_exc.BadRequest(resource='router', msg=msg % {
|
|
'p': existing_port['id'],
|
|
'nid': existing_port['network_id']})
|
|
|
|
fixed_ips = [ip for ip in port['fixed_ips']]
|
|
subnets = []
|
|
for fixed_ip in fixed_ips:
|
|
subnet = self._core_plugin.get_subnet(context,
|
|
fixed_ip['subnet_id'])
|
|
subnets.append(subnet)
|
|
self._check_for_dup_router_subnet(context, router,
|
|
port['network_id'],
|
|
subnet['id'],
|
|
subnet['cidr'])
|
|
|
|
# Keep the restriction against multiple IPv4 subnets
|
|
if len([s for s in subnets if s['ip_version'] == 4]) > 1:
|
|
msg = _("Cannot have multiple "
|
|
"IPv4 subnets on router port")
|
|
raise n_exc.BadRequest(resource='router', msg=msg)
|
|
return port, subnets
|
|
|
|
def _port_has_ipv6_address(self, port):
|
|
for fixed_ip in port['fixed_ips']:
|
|
if netaddr.IPNetwork(fixed_ip['ip_address']).version == 6:
|
|
return True
|
|
|
|
def _find_ipv6_router_port_by_network(self, router, net_id):
|
|
for port in router.attached_ports:
|
|
p = port['port']
|
|
if p['network_id'] == net_id and self._port_has_ipv6_address(p):
|
|
return port
|
|
|
|
def _add_interface_by_subnet(self, context, router, subnet_id, owner):
|
|
subnet = self._core_plugin.get_subnet(context, subnet_id)
|
|
if not subnet['gateway_ip']:
|
|
msg = _('Subnet for router interface must have a gateway IP')
|
|
raise n_exc.BadRequest(resource='router', msg=msg)
|
|
if (subnet['ip_version'] == 6 and subnet['ipv6_ra_mode'] is None
|
|
and subnet['ipv6_address_mode'] is not None):
|
|
msg = (_('IPv6 subnet %s configured to receive RAs from an '
|
|
'external router cannot be added to Neutron Router.') %
|
|
subnet['id'])
|
|
raise n_exc.BadRequest(resource='router', msg=msg)
|
|
self._check_for_dup_router_subnet(context, router,
|
|
subnet['network_id'],
|
|
subnet_id,
|
|
subnet['cidr'])
|
|
fixed_ip = {'ip_address': subnet['gateway_ip'],
|
|
'subnet_id': subnet['id']}
|
|
|
|
if (subnet['ip_version'] == 6 and not
|
|
ipv6_utils.is_ipv6_pd_enabled(subnet)):
|
|
# Add new prefix to an existing ipv6 port with the same network id
|
|
# if one exists
|
|
port = self._find_ipv6_router_port_by_network(router,
|
|
subnet['network_id'])
|
|
if port:
|
|
fixed_ips = list(port['port']['fixed_ips'])
|
|
fixed_ips.append(fixed_ip)
|
|
return self._core_plugin.update_port(context,
|
|
port['port_id'], {'port':
|
|
{'fixed_ips': fixed_ips}}), [subnet], False
|
|
|
|
port_data = {'tenant_id': subnet['tenant_id'],
|
|
'network_id': subnet['network_id'],
|
|
'fixed_ips': [fixed_ip],
|
|
'admin_state_up': True,
|
|
'device_id': router.id,
|
|
'device_owner': owner,
|
|
'name': ''}
|
|
return p_utils.create_port(self._core_plugin, context,
|
|
{'port': port_data}), [subnet], True
|
|
|
|
@staticmethod
|
|
def _make_router_interface_info(
|
|
router_id, tenant_id, port_id, network_id, subnet_id, subnet_ids):
|
|
return {
|
|
'id': router_id,
|
|
'tenant_id': tenant_id,
|
|
'port_id': port_id,
|
|
'network_id': network_id,
|
|
'subnet_id': subnet_id, # deprecated by IPv6 multi-prefix
|
|
'subnet_ids': subnet_ids
|
|
}
|
|
|
|
def add_router_interface(self, context, router_id, interface_info):
|
|
router = self._get_router(context, router_id)
|
|
add_by_port, add_by_sub = self._validate_interface_info(interface_info)
|
|
device_owner = self._get_device_owner(context, router_id)
|
|
|
|
# This should be True unless adding an IPv6 prefix to an existing port
|
|
new_port = True
|
|
|
|
if add_by_port:
|
|
port, subnets = self._add_interface_by_port(
|
|
context, router, interface_info['port_id'], device_owner)
|
|
# add_by_subnet is not used here, because the validation logic of
|
|
# _validate_interface_info ensures that either of add_by_* is True.
|
|
else:
|
|
port, subnets, new_port = self._add_interface_by_subnet(
|
|
context, router, interface_info['subnet_id'], device_owner)
|
|
|
|
if new_port:
|
|
with context.session.begin(subtransactions=True):
|
|
router_port = RouterPort(
|
|
port_id=port['id'],
|
|
router_id=router.id,
|
|
port_type=device_owner
|
|
)
|
|
context.session.add(router_port)
|
|
|
|
gw_ips = []
|
|
gw_network_id = None
|
|
if router.gw_port:
|
|
gw_network_id = router.gw_port.network_id
|
|
gw_ips = router.gw_port.fixed_ips
|
|
|
|
registry.notify(resources.ROUTER_INTERFACE,
|
|
events.AFTER_CREATE,
|
|
self,
|
|
network_id=gw_network_id,
|
|
gateway_ips=gw_ips,
|
|
cidrs=[x['cidr'] for x in subnets],
|
|
port_id=port['id'],
|
|
router_id=router_id,
|
|
interface_info=interface_info)
|
|
|
|
return self._make_router_interface_info(
|
|
router.id, port['tenant_id'], port['id'], port['network_id'],
|
|
subnets[-1]['id'], [subnet['id'] for subnet in subnets])
|
|
|
|
def _confirm_router_interface_not_in_use(self, context, router_id,
|
|
subnet_id):
|
|
subnet = self._core_plugin.get_subnet(context, subnet_id)
|
|
subnet_cidr = netaddr.IPNetwork(subnet['cidr'])
|
|
fip_qry = context.session.query(FloatingIP)
|
|
try:
|
|
kwargs = {'context': context, 'subnet_id': subnet_id}
|
|
registry.notify(
|
|
resources.ROUTER_INTERFACE,
|
|
events.BEFORE_DELETE, self, **kwargs)
|
|
except exceptions.CallbackFailure as e:
|
|
with excutils.save_and_reraise_exception():
|
|
# NOTE(armax): preserve old check's behavior
|
|
if len(e.errors) == 1:
|
|
raise e.errors[0].error
|
|
raise l3.RouterInUse(router_id=router_id, reason=e)
|
|
for fip_db in fip_qry.filter_by(router_id=router_id):
|
|
if netaddr.IPAddress(fip_db['fixed_ip_address']) in subnet_cidr:
|
|
raise l3.RouterInterfaceInUseByFloatingIP(
|
|
router_id=router_id, subnet_id=subnet_id)
|
|
|
|
def _remove_interface_by_port(self, context, router_id,
|
|
port_id, subnet_id, owner):
|
|
qry = context.session.query(RouterPort)
|
|
qry = qry.filter_by(
|
|
port_id=port_id,
|
|
router_id=router_id,
|
|
port_type=owner
|
|
)
|
|
try:
|
|
port_db = qry.one().port
|
|
except exc.NoResultFound:
|
|
raise l3.RouterInterfaceNotFound(router_id=router_id,
|
|
port_id=port_id)
|
|
port_subnet_ids = [fixed_ip['subnet_id']
|
|
for fixed_ip in port_db['fixed_ips']]
|
|
if subnet_id and subnet_id not in port_subnet_ids:
|
|
raise n_exc.SubnetMismatchForPort(
|
|
port_id=port_id, subnet_id=subnet_id)
|
|
subnets = [self._core_plugin.get_subnet(context, port_subnet_id)
|
|
for port_subnet_id in port_subnet_ids]
|
|
for port_subnet_id in port_subnet_ids:
|
|
self._confirm_router_interface_not_in_use(
|
|
context, router_id, port_subnet_id)
|
|
self._core_plugin.delete_port(context, port_db['id'],
|
|
l3_port_check=False)
|
|
return (port_db, subnets)
|
|
|
|
def _remove_interface_by_subnet(self, context,
|
|
router_id, subnet_id, owner):
|
|
self._confirm_router_interface_not_in_use(
|
|
context, router_id, subnet_id)
|
|
subnet = self._core_plugin.get_subnet(context, subnet_id)
|
|
|
|
try:
|
|
rport_qry = context.session.query(models_v2.Port).join(RouterPort)
|
|
ports = rport_qry.filter(
|
|
RouterPort.router_id == router_id,
|
|
RouterPort.port_type == owner,
|
|
models_v2.Port.network_id == subnet['network_id']
|
|
)
|
|
|
|
for p in ports:
|
|
port_subnets = [fip['subnet_id'] for fip in p['fixed_ips']]
|
|
if subnet_id in port_subnets and len(port_subnets) > 1:
|
|
# multiple prefix port - delete prefix from port
|
|
fixed_ips = [fip for fip in p['fixed_ips'] if
|
|
fip['subnet_id'] != subnet_id]
|
|
self._core_plugin.update_port(context, p['id'],
|
|
{'port':
|
|
{'fixed_ips': fixed_ips}})
|
|
return (p, [subnet])
|
|
elif subnet_id in port_subnets:
|
|
# only one subnet on port - delete the port
|
|
self._core_plugin.delete_port(context, p['id'],
|
|
l3_port_check=False)
|
|
return (p, [subnet])
|
|
except exc.NoResultFound:
|
|
pass
|
|
raise l3.RouterInterfaceNotFoundForSubnet(router_id=router_id,
|
|
subnet_id=subnet_id)
|
|
|
|
def remove_router_interface(self, context, router_id, interface_info):
|
|
remove_by_port, remove_by_subnet = (
|
|
self._validate_interface_info(interface_info, for_removal=True)
|
|
)
|
|
port_id = interface_info.get('port_id')
|
|
subnet_id = interface_info.get('subnet_id')
|
|
device_owner = self._get_device_owner(context, router_id)
|
|
if remove_by_port:
|
|
port, subnets = self._remove_interface_by_port(context, router_id,
|
|
port_id, subnet_id,
|
|
device_owner)
|
|
# remove_by_subnet is not used here, because the validation logic of
|
|
# _validate_interface_info ensures that at least one of remote_by_*
|
|
# is True.
|
|
else:
|
|
port, subnets = self._remove_interface_by_subnet(
|
|
context, router_id, subnet_id, device_owner)
|
|
|
|
gw_network_id = None
|
|
router = self._get_router(context, router_id)
|
|
if router.gw_port:
|
|
gw_network_id = router.gw_port.network_id
|
|
|
|
registry.notify(resources.ROUTER_INTERFACE,
|
|
events.AFTER_DELETE,
|
|
self,
|
|
cidrs=[x['cidr'] for x in subnets],
|
|
network_id=gw_network_id)
|
|
return self._make_router_interface_info(router_id, port['tenant_id'],
|
|
port['id'], port['network_id'],
|
|
subnets[0]['id'],
|
|
[subnet['id'] for subnet in
|
|
subnets])
|
|
|
|
def _get_floatingip(self, context, id):
|
|
try:
|
|
floatingip = self._get_by_id(context, FloatingIP, id)
|
|
except exc.NoResultFound:
|
|
raise l3.FloatingIPNotFound(floatingip_id=id)
|
|
return floatingip
|
|
|
|
def _make_floatingip_dict(self, floatingip, fields=None,
|
|
process_extensions=True):
|
|
res = {'id': floatingip['id'],
|
|
'tenant_id': floatingip['tenant_id'],
|
|
'floating_ip_address': floatingip['floating_ip_address'],
|
|
'floating_network_id': floatingip['floating_network_id'],
|
|
'router_id': floatingip['router_id'],
|
|
'port_id': floatingip['fixed_port_id'],
|
|
'fixed_ip_address': floatingip['fixed_ip_address'],
|
|
'status': floatingip['status']}
|
|
# NOTE(mlavalle): The following assumes this mixin is used in a
|
|
# class inheriting from CommonDbMixin, which is true for all existing
|
|
# plugins.
|
|
if process_extensions:
|
|
self._apply_dict_extend_functions(l3.FLOATINGIPS, res, floatingip)
|
|
return self._fields(res, fields)
|
|
|
|
def _get_router_for_floatingip(self, context, internal_port,
|
|
internal_subnet_id,
|
|
external_network_id):
|
|
subnet = self._core_plugin.get_subnet(context, internal_subnet_id)
|
|
if not subnet['gateway_ip']:
|
|
msg = (_('Cannot add floating IP to port on subnet %s '
|
|
'which has no gateway_ip') % internal_subnet_id)
|
|
raise n_exc.BadRequest(resource='floatingip', msg=msg)
|
|
|
|
# Find routers(with router_id and interface address) that
|
|
# connect given internal subnet and the external network.
|
|
# Among them, if the router's interface address matches
|
|
# with subnet's gateway-ip, return that router.
|
|
# Otherwise return the first router.
|
|
gw_port = orm.aliased(models_v2.Port, name="gw_port")
|
|
routerport_qry = context.session.query(
|
|
RouterPort.router_id, models_v2.IPAllocation.ip_address).join(
|
|
models_v2.Port, models_v2.IPAllocation).filter(
|
|
models_v2.Port.network_id == internal_port['network_id'],
|
|
RouterPort.port_type.in_(l3_constants.ROUTER_INTERFACE_OWNERS),
|
|
models_v2.IPAllocation.subnet_id == internal_subnet_id
|
|
).join(gw_port, gw_port.device_id == RouterPort.router_id).filter(
|
|
gw_port.network_id == external_network_id).distinct()
|
|
|
|
first_router_id = None
|
|
for router_id, interface_ip in routerport_qry:
|
|
if interface_ip == subnet['gateway_ip']:
|
|
return router_id
|
|
if not first_router_id:
|
|
first_router_id = router_id
|
|
if first_router_id:
|
|
return first_router_id
|
|
|
|
raise l3.ExternalGatewayForFloatingIPNotFound(
|
|
subnet_id=internal_subnet_id,
|
|
external_network_id=external_network_id,
|
|
port_id=internal_port['id'])
|
|
|
|
def _port_ipv4_fixed_ips(self, port):
|
|
return [ip for ip in port['fixed_ips']
|
|
if netaddr.IPAddress(ip['ip_address']).version == 4]
|
|
|
|
def _internal_fip_assoc_data(self, context, fip):
|
|
"""Retrieve internal port data for floating IP.
|
|
|
|
Retrieve information concerning the internal port where
|
|
the floating IP should be associated to.
|
|
"""
|
|
internal_port = self._core_plugin.get_port(context, fip['port_id'])
|
|
if not internal_port['tenant_id'] == fip['tenant_id']:
|
|
port_id = fip['port_id']
|
|
if 'id' in fip:
|
|
floatingip_id = fip['id']
|
|
data = {'port_id': port_id,
|
|
'floatingip_id': floatingip_id}
|
|
msg = (_('Port %(port_id)s is associated with a different '
|
|
'tenant than Floating IP %(floatingip_id)s and '
|
|
'therefore cannot be bound.') % data)
|
|
else:
|
|
msg = (_('Cannot create floating IP and bind it to '
|
|
'Port %s, since that port is owned by a '
|
|
'different tenant.') % port_id)
|
|
raise n_exc.BadRequest(resource='floatingip', msg=msg)
|
|
|
|
internal_subnet_id = None
|
|
if fip.get('fixed_ip_address'):
|
|
internal_ip_address = fip['fixed_ip_address']
|
|
if netaddr.IPAddress(internal_ip_address).version != 4:
|
|
if 'id' in fip:
|
|
data = {'floatingip_id': fip['id'],
|
|
'internal_ip': internal_ip_address}
|
|
msg = (_('Floating IP %(floatingip_id)s is associated '
|
|
'with non-IPv4 address %s(internal_ip)s and '
|
|
'therefore cannot be bound.') % data)
|
|
else:
|
|
msg = (_('Cannot create floating IP and bind it to %s, '
|
|
'since that is not an IPv4 address.') %
|
|
internal_ip_address)
|
|
raise n_exc.BadRequest(resource='floatingip', msg=msg)
|
|
for ip in internal_port['fixed_ips']:
|
|
if ip['ip_address'] == internal_ip_address:
|
|
internal_subnet_id = ip['subnet_id']
|
|
if not internal_subnet_id:
|
|
msg = (_('Port %(id)s does not have fixed ip %(address)s') %
|
|
{'id': internal_port['id'],
|
|
'address': internal_ip_address})
|
|
raise n_exc.BadRequest(resource='floatingip', msg=msg)
|
|
else:
|
|
ipv4_fixed_ips = self._port_ipv4_fixed_ips(internal_port)
|
|
if not ipv4_fixed_ips:
|
|
msg = (_('Cannot add floating IP to port %s that has '
|
|
'no fixed IPv4 addresses') % internal_port['id'])
|
|
raise n_exc.BadRequest(resource='floatingip', msg=msg)
|
|
if len(ipv4_fixed_ips) > 1:
|
|
msg = (_('Port %s has multiple fixed IPv4 addresses. Must '
|
|
'provide a specific IPv4 address when assigning a '
|
|
'floating IP') % internal_port['id'])
|
|
raise n_exc.BadRequest(resource='floatingip', msg=msg)
|
|
internal_ip_address = ipv4_fixed_ips[0]['ip_address']
|
|
internal_subnet_id = ipv4_fixed_ips[0]['subnet_id']
|
|
return internal_port, internal_subnet_id, internal_ip_address
|
|
|
|
def _get_assoc_data(self, context, fip, floating_network_id):
|
|
"""Determine/extract data associated with the internal port.
|
|
|
|
When a floating IP is associated with an internal port,
|
|
we need to extract/determine some data associated with the
|
|
internal port, including the internal_ip_address, and router_id.
|
|
The confirmation of the internal port whether owned by the tenant who
|
|
owns the floating IP will be confirmed by _get_router_for_floatingip.
|
|
"""
|
|
(internal_port, internal_subnet_id,
|
|
internal_ip_address) = self._internal_fip_assoc_data(context, fip)
|
|
router_id = self._get_router_for_floatingip(context,
|
|
internal_port,
|
|
internal_subnet_id,
|
|
floating_network_id)
|
|
|
|
return (fip['port_id'], internal_ip_address, router_id)
|
|
|
|
def _check_and_get_fip_assoc(self, context, fip, floatingip_db):
|
|
port_id = internal_ip_address = router_id = None
|
|
if fip.get('fixed_ip_address') and not fip.get('port_id'):
|
|
msg = _("fixed_ip_address cannot be specified without a port_id")
|
|
raise n_exc.BadRequest(resource='floatingip', msg=msg)
|
|
if fip.get('port_id'):
|
|
port_id, internal_ip_address, router_id = self._get_assoc_data(
|
|
context,
|
|
fip,
|
|
floatingip_db['floating_network_id'])
|
|
fip_qry = context.session.query(FloatingIP)
|
|
try:
|
|
fip_qry.filter_by(
|
|
fixed_port_id=fip['port_id'],
|
|
floating_network_id=floatingip_db['floating_network_id'],
|
|
fixed_ip_address=internal_ip_address).one()
|
|
raise l3.FloatingIPPortAlreadyAssociated(
|
|
port_id=fip['port_id'],
|
|
fip_id=floatingip_db['id'],
|
|
floating_ip_address=floatingip_db['floating_ip_address'],
|
|
fixed_ip=internal_ip_address,
|
|
net_id=floatingip_db['floating_network_id'])
|
|
except exc.NoResultFound:
|
|
pass
|
|
return port_id, internal_ip_address, router_id
|
|
|
|
def _update_fip_assoc(self, context, fip, floatingip_db, external_port):
|
|
previous_router_id = floatingip_db.router_id
|
|
port_id, internal_ip_address, router_id = (
|
|
self._check_and_get_fip_assoc(context, fip, floatingip_db))
|
|
floatingip_db.update({'fixed_ip_address': internal_ip_address,
|
|
'fixed_port_id': port_id,
|
|
'router_id': router_id,
|
|
'last_known_router_id': previous_router_id})
|
|
next_hop = None
|
|
if router_id:
|
|
# NOTE(tidwellr) use admin context here
|
|
# tenant may not own the router and that's OK on a FIP association
|
|
router = self._get_router(context.elevated(), router_id)
|
|
gw_port = router.gw_port
|
|
for fixed_ip in gw_port.fixed_ips:
|
|
addr = netaddr.IPAddress(fixed_ip.ip_address)
|
|
if addr.version == l3_constants.IP_VERSION_4:
|
|
next_hop = fixed_ip.ip_address
|
|
break
|
|
args = {'fixed_ip_address': internal_ip_address,
|
|
'fixed_port_id': port_id,
|
|
'router_id': router_id,
|
|
'last_known_router_id': previous_router_id,
|
|
'floating_ip_address': floatingip_db.floating_ip_address,
|
|
'floating_network_id': floatingip_db.floating_network_id,
|
|
'next_hop': next_hop,
|
|
'context': context}
|
|
registry.notify(resources.FLOATING_IP,
|
|
events.AFTER_UPDATE,
|
|
self._update_fip_assoc,
|
|
**args)
|
|
|
|
def _is_ipv4_network(self, context, net_id):
|
|
net = self._core_plugin._get_network(context, net_id)
|
|
return any(s.ip_version == 4 for s in net.subnets)
|
|
|
|
def _create_floatingip(self, context, floatingip,
|
|
initial_status=l3_constants.FLOATINGIP_STATUS_ACTIVE):
|
|
fip = floatingip['floatingip']
|
|
fip_id = uuidutils.generate_uuid()
|
|
|
|
f_net_id = fip['floating_network_id']
|
|
if not self._core_plugin._network_is_external(context, f_net_id):
|
|
msg = _("Network %s is not a valid external network") % f_net_id
|
|
raise n_exc.BadRequest(resource='floatingip', msg=msg)
|
|
|
|
if not self._is_ipv4_network(context, f_net_id):
|
|
msg = _("Network %s does not contain any IPv4 subnet") % f_net_id
|
|
raise n_exc.BadRequest(resource='floatingip', msg=msg)
|
|
|
|
dns_integration = utils.is_extension_supported(self, 'dns-integration')
|
|
with context.session.begin(subtransactions=True):
|
|
# This external port is never exposed to the tenant.
|
|
# it is used purely for internal system and admin use when
|
|
# managing floating IPs.
|
|
|
|
port = {'tenant_id': '', # tenant intentionally not set
|
|
'network_id': f_net_id,
|
|
'admin_state_up': True,
|
|
'device_id': fip_id,
|
|
'device_owner': DEVICE_OWNER_FLOATINGIP,
|
|
'status': l3_constants.PORT_STATUS_NOTAPPLICABLE,
|
|
'name': ''}
|
|
if fip.get('floating_ip_address'):
|
|
port['fixed_ips'] = [
|
|
{'ip_address': fip['floating_ip_address']}]
|
|
|
|
if fip.get('subnet_id'):
|
|
port['fixed_ips'] = [
|
|
{'subnet_id': fip['subnet_id']}]
|
|
|
|
# 'status' in port dict could not be updated by default, use
|
|
# check_allow_post to stop the verification of system
|
|
external_port = p_utils.create_port(self._core_plugin,
|
|
context.elevated(),
|
|
{'port': port},
|
|
check_allow_post=False)
|
|
# Ensure IPv4 addresses are allocated on external port
|
|
external_ipv4_ips = self._port_ipv4_fixed_ips(external_port)
|
|
if not external_ipv4_ips:
|
|
raise n_exc.ExternalIpAddressExhausted(net_id=f_net_id)
|
|
|
|
floating_fixed_ip = external_ipv4_ips[0]
|
|
floating_ip_address = floating_fixed_ip['ip_address']
|
|
floatingip_db = FloatingIP(
|
|
id=fip_id,
|
|
tenant_id=fip['tenant_id'],
|
|
status=initial_status,
|
|
floating_network_id=fip['floating_network_id'],
|
|
floating_ip_address=floating_ip_address,
|
|
floating_port_id=external_port['id'])
|
|
# Update association with internal port
|
|
# and define external IP address
|
|
self._update_fip_assoc(context, fip,
|
|
floatingip_db, external_port)
|
|
context.session.add(floatingip_db)
|
|
floatingip_dict = self._make_floatingip_dict(
|
|
floatingip_db, process_extensions=False)
|
|
if dns_integration:
|
|
dns_data = self._process_dns_floatingip_create_precommit(
|
|
context, floatingip_dict, fip)
|
|
|
|
if dns_integration:
|
|
self._process_dns_floatingip_create_postcommit(context,
|
|
floatingip_dict,
|
|
dns_data)
|
|
return floatingip_dict
|
|
|
|
def create_floatingip(self, context, floatingip,
|
|
initial_status=l3_constants.FLOATINGIP_STATUS_ACTIVE):
|
|
return self._create_floatingip(context, floatingip, initial_status)
|
|
|
|
def _update_floatingip(self, context, id, floatingip):
|
|
fip = floatingip['floatingip']
|
|
dns_integration = utils.is_extension_supported(self, 'dns-integration')
|
|
with context.session.begin(subtransactions=True):
|
|
floatingip_db = self._get_floatingip(context, id)
|
|
old_floatingip = self._make_floatingip_dict(floatingip_db)
|
|
fip['tenant_id'] = floatingip_db['tenant_id']
|
|
fip['id'] = id
|
|
fip_port_id = floatingip_db['floating_port_id']
|
|
self._update_fip_assoc(context, fip, floatingip_db,
|
|
self._core_plugin.get_port(
|
|
context.elevated(), fip_port_id))
|
|
floatingip_dict = self._make_floatingip_dict(floatingip_db)
|
|
if dns_integration:
|
|
dns_data = self._process_dns_floatingip_update_precommit(
|
|
context, floatingip_dict)
|
|
if dns_integration:
|
|
self._process_dns_floatingip_update_postcommit(context,
|
|
floatingip_dict,
|
|
dns_data)
|
|
return old_floatingip, floatingip_dict
|
|
|
|
def _floatingips_to_router_ids(self, floatingips):
|
|
return list(set([floatingip['router_id']
|
|
for floatingip in floatingips
|
|
if floatingip['router_id']]))
|
|
|
|
def update_floatingip(self, context, id, floatingip):
|
|
_old_floatingip, floatingip = self._update_floatingip(
|
|
context, id, floatingip)
|
|
return floatingip
|
|
|
|
def update_floatingip_status(self, context, floatingip_id, status):
|
|
"""Update operational status for floating IP in neutron DB."""
|
|
fip_query = self._model_query(context, FloatingIP).filter(
|
|
FloatingIP.id == floatingip_id)
|
|
fip_query.update({'status': status}, synchronize_session=False)
|
|
|
|
def _delete_floatingip(self, context, id):
|
|
floatingip = self._get_floatingip(context, id)
|
|
floatingip_dict = self._make_floatingip_dict(floatingip)
|
|
if utils.is_extension_supported(self, 'dns-integration'):
|
|
self._process_dns_floatingip_delete(context, floatingip_dict)
|
|
# Foreign key cascade will take care of the removal of the
|
|
# floating IP record once the port is deleted. We can't start
|
|
# a transaction first to remove it ourselves because the delete_port
|
|
# method will yield in its post-commit activities.
|
|
self._core_plugin.delete_port(context.elevated(),
|
|
floatingip['floating_port_id'],
|
|
l3_port_check=False)
|
|
return floatingip_dict
|
|
|
|
def delete_floatingip(self, context, id):
|
|
self._delete_floatingip(context, id)
|
|
|
|
def get_floatingip(self, context, id, fields=None):
|
|
floatingip = self._get_floatingip(context, id)
|
|
return self._make_floatingip_dict(floatingip, fields)
|
|
|
|
def get_floatingips(self, context, filters=None, fields=None,
|
|
sorts=None, limit=None, marker=None,
|
|
page_reverse=False):
|
|
marker_obj = self._get_marker_obj(context, 'floatingip', limit,
|
|
marker)
|
|
if filters is not None:
|
|
for key, val in six.iteritems(API_TO_DB_COLUMN_MAP):
|
|
if key in filters:
|
|
filters[val] = filters.pop(key)
|
|
|
|
return self._get_collection(context, FloatingIP,
|
|
self._make_floatingip_dict,
|
|
filters=filters, fields=fields,
|
|
sorts=sorts,
|
|
limit=limit,
|
|
marker_obj=marker_obj,
|
|
page_reverse=page_reverse)
|
|
|
|
def delete_disassociated_floatingips(self, context, network_id):
|
|
query = self._model_query(context, FloatingIP)
|
|
query = query.filter_by(floating_network_id=network_id,
|
|
fixed_port_id=None,
|
|
router_id=None)
|
|
for fip in query:
|
|
self.delete_floatingip(context, fip.id)
|
|
|
|
def get_floatingips_count(self, context, filters=None):
|
|
return self._get_collection_count(context, FloatingIP,
|
|
filters=filters)
|
|
|
|
def prevent_l3_port_deletion(self, context, port_id):
|
|
"""Checks to make sure a port is allowed to be deleted.
|
|
|
|
Raises an exception if this is not the case. This should be called by
|
|
any plugin when the API requests the deletion of a port, since some
|
|
ports for L3 are not intended to be deleted directly via a DELETE
|
|
to /ports, but rather via other API calls that perform the proper
|
|
deletion checks.
|
|
"""
|
|
try:
|
|
port = self._core_plugin.get_port(context, port_id)
|
|
except n_exc.PortNotFound:
|
|
# non-existent ports don't need to be protected from deletion
|
|
return
|
|
if port['device_owner'] in self.router_device_owners:
|
|
# Raise port in use only if the port has IP addresses
|
|
# Otherwise it's a stale port that can be removed
|
|
fixed_ips = port['fixed_ips']
|
|
if fixed_ips:
|
|
reason = _('has device owner %s') % port['device_owner']
|
|
raise n_exc.ServicePortInUse(port_id=port['id'],
|
|
reason=reason)
|
|
else:
|
|
LOG.debug("Port %(port_id)s has owner %(port_owner)s, but "
|
|
"no IP address, so it can be deleted",
|
|
{'port_id': port['id'],
|
|
'port_owner': port['device_owner']})
|
|
|
|
def disassociate_floatingips(self, context, port_id):
|
|
"""Disassociate all floating IPs linked to specific port.
|
|
|
|
@param port_id: ID of the port to disassociate floating IPs.
|
|
@param do_notify: whether we should notify routers right away.
|
|
@return: set of router-ids that require notification updates
|
|
if do_notify is False, otherwise None.
|
|
"""
|
|
router_ids = set()
|
|
|
|
with context.session.begin(subtransactions=True):
|
|
fip_qry = context.session.query(FloatingIP)
|
|
floating_ips = fip_qry.filter_by(fixed_port_id=port_id)
|
|
for floating_ip in floating_ips:
|
|
router_ids.add(floating_ip['router_id'])
|
|
floating_ip.update({'fixed_port_id': None,
|
|
'fixed_ip_address': None,
|
|
'router_id': None})
|
|
return router_ids
|
|
|
|
def _build_routers_list(self, context, routers, gw_ports):
|
|
"""Subclasses can override this to add extra gateway info"""
|
|
return routers
|
|
|
|
def _make_router_dict_with_gw_port(self, router, fields):
|
|
result = self._make_router_dict(router, fields)
|
|
if router.get('gw_port'):
|
|
result['gw_port'] = self._core_plugin._make_port_dict(
|
|
router['gw_port'], None)
|
|
return result
|
|
|
|
def _get_sync_routers(self, context, router_ids=None, active=None):
|
|
"""Query routers and their gw ports for l3 agent.
|
|
|
|
Query routers with the router_ids. The gateway ports, if any,
|
|
will be queried too.
|
|
l3 agent has an option to deal with only one router id. In addition,
|
|
when we need to notify the agent the data about only one router
|
|
(when modification of router, its interfaces, gw_port and floatingips),
|
|
we will have router_ids.
|
|
@param router_ids: the list of router ids which we want to query.
|
|
if it is None, all of routers will be queried.
|
|
@return: a list of dicted routers with dicted gw_port populated if any
|
|
"""
|
|
filters = {'id': router_ids} if router_ids else {}
|
|
if active is not None:
|
|
filters['admin_state_up'] = [active]
|
|
router_dicts = self._get_collection(
|
|
context, Router, self._make_router_dict_with_gw_port,
|
|
filters=filters)
|
|
if not router_dicts:
|
|
return []
|
|
gw_ports = dict((r['gw_port']['id'], r['gw_port'])
|
|
for r in router_dicts
|
|
if r.get('gw_port'))
|
|
return self._build_routers_list(context, router_dicts, gw_ports)
|
|
|
|
@staticmethod
|
|
def _unique_floatingip_iterator(query):
|
|
"""Iterates over only one row per floating ip. Ignores others."""
|
|
# Group rows by fip id. They must be sorted by same.
|
|
q = query.order_by(FloatingIP.id)
|
|
keyfunc = lambda row: row[0]['id']
|
|
group_iterator = itertools.groupby(q, keyfunc)
|
|
|
|
# Just hit the first row of each group
|
|
for key, value in group_iterator:
|
|
yield six.next(value)
|
|
|
|
def _make_floatingip_dict_with_scope(self, floatingip_db, scope_id):
|
|
d = self._make_floatingip_dict(floatingip_db)
|
|
d['fixed_ip_address_scope'] = scope_id
|
|
return d
|
|
|
|
def _get_sync_floating_ips(self, context, router_ids):
|
|
"""Query floating_ips that relate to list of router_ids with scope.
|
|
|
|
This is different than the regular get_floatingips in that it finds the
|
|
address scope of the fixed IP. The router needs to know this to
|
|
distinguish it from other scopes.
|
|
|
|
There are a few redirections to go through to discover the address
|
|
scope from the floating ip.
|
|
"""
|
|
if not router_ids:
|
|
return []
|
|
|
|
query = context.session.query(FloatingIP,
|
|
models_v2.SubnetPool.address_scope_id)
|
|
query = query.join(models_v2.Port,
|
|
FloatingIP.fixed_port_id == models_v2.Port.id)
|
|
# Outer join of Subnet can cause each ip to have more than one row.
|
|
query = query.outerjoin(models_v2.Subnet,
|
|
models_v2.Subnet.network_id == models_v2.Port.network_id)
|
|
query = query.filter(models_v2.Subnet.ip_version == 4)
|
|
query = query.outerjoin(models_v2.SubnetPool,
|
|
models_v2.Subnet.subnetpool_id == models_v2.SubnetPool.id)
|
|
|
|
# Filter out on router_ids
|
|
query = query.filter(FloatingIP.router_id.in_(router_ids))
|
|
|
|
return [self._make_floatingip_dict_with_scope(*row)
|
|
for row in self._unique_floatingip_iterator(query)]
|
|
|
|
def _get_sync_interfaces(self, context, router_ids, device_owners=None):
|
|
"""Query router interfaces that relate to list of router_ids."""
|
|
device_owners = device_owners or [DEVICE_OWNER_ROUTER_INTF]
|
|
if not router_ids:
|
|
return []
|
|
qry = context.session.query(RouterPort)
|
|
qry = qry.filter(
|
|
RouterPort.router_id.in_(router_ids),
|
|
RouterPort.port_type.in_(device_owners)
|
|
)
|
|
|
|
interfaces = [self._core_plugin._make_port_dict(rp.port, None)
|
|
for rp in qry]
|
|
return interfaces
|
|
|
|
@staticmethod
|
|
def _each_port_having_fixed_ips(ports):
|
|
for port in ports or []:
|
|
fixed_ips = port.get('fixed_ips', [])
|
|
if not fixed_ips:
|
|
# Skip ports without IPs, which can occur if a subnet
|
|
# attached to a router is deleted
|
|
LOG.info(_LI("Skipping port %s as no IP is configure on "
|
|
"it"),
|
|
port['id'])
|
|
continue
|
|
yield port
|
|
|
|
def _get_subnets_by_network_list(self, context, network_ids):
|
|
if not network_ids:
|
|
return {}
|
|
|
|
query = context.session.query(models_v2.Subnet,
|
|
models_v2.SubnetPool.address_scope_id)
|
|
query = query.outerjoin(
|
|
models_v2.SubnetPool,
|
|
models_v2.Subnet.subnetpool_id == models_v2.SubnetPool.id)
|
|
query = query.filter(models_v2.Subnet.network_id.in_(network_ids))
|
|
|
|
fields = ['id', 'cidr', 'gateway_ip', 'dns_nameservers',
|
|
'network_id', 'ipv6_ra_mode', 'subnetpool_id']
|
|
|
|
def make_subnet_dict_with_scope(row):
|
|
subnet_db, address_scope_id = row
|
|
subnet = self._core_plugin._make_subnet_dict(
|
|
subnet_db, fields, context=context)
|
|
subnet['address_scope_id'] = address_scope_id
|
|
return subnet
|
|
|
|
subnets_by_network = dict((id, []) for id in network_ids)
|
|
for subnet in (make_subnet_dict_with_scope(row) for row in query):
|
|
subnets_by_network[subnet['network_id']].append(subnet)
|
|
return subnets_by_network
|
|
|
|
def _get_mtus_by_network_list(self, context, network_ids):
|
|
if not network_ids:
|
|
return {}
|
|
filters = {'network_id': network_ids}
|
|
fields = ['id', 'mtu']
|
|
networks = self._core_plugin.get_networks(context, filters=filters,
|
|
fields=fields)
|
|
mtus_by_network = dict((network['id'], network.get('mtu', 0))
|
|
for network in networks)
|
|
return mtus_by_network
|
|
|
|
def _populate_mtu_and_subnets_for_ports(self, context, ports):
|
|
"""Populate ports with subnets.
|
|
|
|
These ports already have fixed_ips populated.
|
|
"""
|
|
network_ids = [p['network_id']
|
|
for p in self._each_port_having_fixed_ips(ports)]
|
|
|
|
mtus_by_network = self._get_mtus_by_network_list(context, network_ids)
|
|
subnets_by_network = self._get_subnets_by_network_list(
|
|
context, network_ids)
|
|
|
|
for port in self._each_port_having_fixed_ips(ports):
|
|
|
|
port['subnets'] = []
|
|
port['extra_subnets'] = []
|
|
port['address_scopes'] = {l3_constants.IP_VERSION_4: None,
|
|
l3_constants.IP_VERSION_6: None}
|
|
|
|
scopes = {}
|
|
for subnet in subnets_by_network[port['network_id']]:
|
|
scope = subnet['address_scope_id']
|
|
cidr = netaddr.IPNetwork(subnet['cidr'])
|
|
scopes[cidr.version] = scope
|
|
|
|
# If this subnet is used by the port (has a matching entry
|
|
# in the port's fixed_ips), then add this subnet to the
|
|
# port's subnets list, and populate the fixed_ips entry
|
|
# entry with the subnet's prefix length.
|
|
subnet_info = {'id': subnet['id'],
|
|
'cidr': subnet['cidr'],
|
|
'gateway_ip': subnet['gateway_ip'],
|
|
'dns_nameservers': subnet['dns_nameservers'],
|
|
'ipv6_ra_mode': subnet['ipv6_ra_mode'],
|
|
'subnetpool_id': subnet['subnetpool_id']}
|
|
for fixed_ip in port['fixed_ips']:
|
|
if fixed_ip['subnet_id'] == subnet['id']:
|
|
port['subnets'].append(subnet_info)
|
|
prefixlen = cidr.prefixlen
|
|
fixed_ip['prefixlen'] = prefixlen
|
|
break
|
|
else:
|
|
# This subnet is not used by the port.
|
|
port['extra_subnets'].append(subnet_info)
|
|
|
|
port['address_scopes'].update(scopes)
|
|
port['mtu'] = mtus_by_network.get(port['network_id'], 0)
|
|
|
|
def _process_floating_ips(self, context, routers_dict, floating_ips):
|
|
for floating_ip in floating_ips:
|
|
router = routers_dict.get(floating_ip['router_id'])
|
|
if router:
|
|
router_floatingips = router.get(l3_constants.FLOATINGIP_KEY,
|
|
[])
|
|
router_floatingips.append(floating_ip)
|
|
router[l3_constants.FLOATINGIP_KEY] = router_floatingips
|
|
|
|
def _process_interfaces(self, routers_dict, interfaces):
|
|
for interface in interfaces:
|
|
router = routers_dict.get(interface['device_id'])
|
|
if router:
|
|
router_interfaces = router.get(l3_constants.INTERFACE_KEY, [])
|
|
router_interfaces.append(interface)
|
|
router[l3_constants.INTERFACE_KEY] = router_interfaces
|
|
|
|
def _get_router_info_list(self, context, router_ids=None, active=None,
|
|
device_owners=None):
|
|
"""Query routers and their related floating_ips, interfaces."""
|
|
with context.session.begin(subtransactions=True):
|
|
routers = self._get_sync_routers(context,
|
|
router_ids=router_ids,
|
|
active=active)
|
|
router_ids = [router['id'] for router in routers]
|
|
interfaces = self._get_sync_interfaces(
|
|
context, router_ids, device_owners)
|
|
floating_ips = self._get_sync_floating_ips(context, router_ids)
|
|
return (routers, interfaces, floating_ips)
|
|
|
|
def get_sync_data(self, context, router_ids=None, active=None):
|
|
routers, interfaces, floating_ips = self._get_router_info_list(
|
|
context, router_ids=router_ids, active=active)
|
|
ports_to_populate = [router['gw_port'] for router in routers
|
|
if router.get('gw_port')] + interfaces
|
|
self._populate_mtu_and_subnets_for_ports(context, ports_to_populate)
|
|
routers_dict = dict((router['id'], router) for router in routers)
|
|
self._process_floating_ips(context, routers_dict, floating_ips)
|
|
self._process_interfaces(routers_dict, interfaces)
|
|
return list(routers_dict.values())
|
|
|
|
|
|
class L3RpcNotifierMixin(object):
|
|
"""Mixin class to add rpc notifier attribute to db_base_plugin_v2."""
|
|
|
|
@property
|
|
def l3_rpc_notifier(self):
|
|
if not hasattr(self, '_l3_rpc_notifier'):
|
|
self._l3_rpc_notifier = l3_rpc_agent_api.L3AgentNotifyAPI()
|
|
return self._l3_rpc_notifier
|
|
|
|
@l3_rpc_notifier.setter
|
|
def l3_rpc_notifier(self, value):
|
|
self._l3_rpc_notifier = value
|
|
|
|
def notify_router_updated(self, context, router_id,
|
|
operation=None):
|
|
if router_id:
|
|
self.l3_rpc_notifier.routers_updated(
|
|
context, [router_id], operation)
|
|
|
|
def notify_routers_updated(self, context, router_ids,
|
|
operation=None, data=None):
|
|
if router_ids:
|
|
self.l3_rpc_notifier.routers_updated(
|
|
context, router_ids, operation, data)
|
|
|
|
def notify_router_deleted(self, context, router_id):
|
|
self.l3_rpc_notifier.router_deleted(context, router_id)
|
|
|
|
|
|
class L3_NAT_db_mixin(L3_NAT_dbonly_mixin, L3RpcNotifierMixin):
|
|
"""Mixin class to add rpc notifier methods to db_base_plugin_v2."""
|
|
|
|
def update_router(self, context, id, router):
|
|
router_dict = super(L3_NAT_db_mixin, self).update_router(context,
|
|
id, router)
|
|
self.notify_router_updated(context, router_dict['id'], None)
|
|
return router_dict
|
|
|
|
def delete_router(self, context, id):
|
|
super(L3_NAT_db_mixin, self).delete_router(context, id)
|
|
self.notify_router_deleted(context, id)
|
|
|
|
def notify_router_interface_action(
|
|
self, context, router_interface_info, action):
|
|
l3_method = '%s_router_interface' % action
|
|
super(L3_NAT_db_mixin, self).notify_routers_updated(
|
|
context, [router_interface_info['id']], l3_method,
|
|
{'subnet_id': router_interface_info['subnet_id']})
|
|
|
|
mapping = {'add': 'create', 'remove': 'delete'}
|
|
notifier = n_rpc.get_notifier('network')
|
|
router_event = 'router.interface.%s' % mapping[action]
|
|
notifier.info(context, router_event,
|
|
{'router_interface': router_interface_info})
|
|
|
|
def add_router_interface(self, context, router_id, interface_info):
|
|
router_interface_info = super(
|
|
L3_NAT_db_mixin, self).add_router_interface(
|
|
context, router_id, interface_info)
|
|
self.notify_router_interface_action(
|
|
context, router_interface_info, 'add')
|
|
return router_interface_info
|
|
|
|
def remove_router_interface(self, context, router_id, interface_info):
|
|
router_interface_info = super(
|
|
L3_NAT_db_mixin, self).remove_router_interface(
|
|
context, router_id, interface_info)
|
|
self.notify_router_interface_action(
|
|
context, router_interface_info, 'remove')
|
|
return router_interface_info
|
|
|
|
def create_floatingip(self, context, floatingip,
|
|
initial_status=l3_constants.FLOATINGIP_STATUS_ACTIVE):
|
|
floatingip_dict = super(L3_NAT_db_mixin, self).create_floatingip(
|
|
context, floatingip, initial_status)
|
|
router_id = floatingip_dict['router_id']
|
|
self.notify_router_updated(context, router_id, 'create_floatingip')
|
|
return floatingip_dict
|
|
|
|
def update_floatingip(self, context, id, floatingip):
|
|
old_floatingip, floatingip = self._update_floatingip(
|
|
context, id, floatingip)
|
|
router_ids = self._floatingips_to_router_ids(
|
|
[old_floatingip, floatingip])
|
|
super(L3_NAT_db_mixin, self).notify_routers_updated(
|
|
context, router_ids, 'update_floatingip', {})
|
|
return floatingip
|
|
|
|
def delete_floatingip(self, context, id):
|
|
floating_ip = self._delete_floatingip(context, id)
|
|
self.notify_router_updated(context, floating_ip['router_id'],
|
|
'delete_floatingip')
|
|
|
|
def disassociate_floatingips(self, context, port_id, do_notify=True):
|
|
"""Disassociate all floating IPs linked to specific port.
|
|
|
|
@param port_id: ID of the port to disassociate floating IPs.
|
|
@param do_notify: whether we should notify routers right away.
|
|
@return: set of router-ids that require notification updates
|
|
if do_notify is False, otherwise None.
|
|
"""
|
|
router_ids = super(L3_NAT_db_mixin, self).disassociate_floatingips(
|
|
context, port_id)
|
|
if do_notify:
|
|
self.notify_routers_updated(context, router_ids)
|
|
# since caller assumes that we handled notifications on its
|
|
# behalf, return nothing
|
|
return
|
|
|
|
return router_ids
|
|
|
|
def notify_routers_updated(self, context, router_ids):
|
|
super(L3_NAT_db_mixin, self).notify_routers_updated(
|
|
context, list(router_ids), 'disassociate_floatingips', {})
|
|
|
|
|
|
def _prevent_l3_port_delete_callback(resource, event, trigger, **kwargs):
|
|
context = kwargs['context']
|
|
port_id = kwargs['port_id']
|
|
port_check = kwargs['port_check']
|
|
l3plugin = manager.NeutronManager.get_service_plugins().get(
|
|
constants.L3_ROUTER_NAT)
|
|
if l3plugin and port_check:
|
|
l3plugin.prevent_l3_port_deletion(context, port_id)
|
|
|
|
|
|
def _notify_routers_callback(resource, event, trigger, **kwargs):
|
|
context = kwargs['context']
|
|
router_ids = kwargs['router_ids']
|
|
l3plugin = manager.NeutronManager.get_service_plugins().get(
|
|
constants.L3_ROUTER_NAT)
|
|
l3plugin.notify_routers_updated(context, router_ids)
|
|
|
|
|
|
def _notify_subnet_gateway_ip_update(resource, event, trigger, **kwargs):
|
|
l3plugin = manager.NeutronManager.get_service_plugins().get(
|
|
constants.L3_ROUTER_NAT)
|
|
if not l3plugin:
|
|
return
|
|
context = kwargs['context']
|
|
network_id = kwargs['network_id']
|
|
subnet_id = kwargs['subnet_id']
|
|
query = context.session.query(models_v2.Port).filter_by(
|
|
network_id=network_id,
|
|
device_owner=l3_constants.DEVICE_OWNER_ROUTER_GW)
|
|
query = query.join(models_v2.Port.fixed_ips).filter(
|
|
models_v2.IPAllocation.subnet_id == subnet_id)
|
|
router_ids = set(port['device_id'] for port in query)
|
|
for router_id in router_ids:
|
|
l3plugin.notify_router_updated(context, router_id)
|
|
|
|
|
|
def subscribe():
|
|
registry.subscribe(
|
|
_prevent_l3_port_delete_callback, resources.PORT, events.BEFORE_DELETE)
|
|
registry.subscribe(
|
|
_notify_routers_callback, resources.PORT, events.AFTER_DELETE)
|
|
registry.subscribe(
|
|
_notify_subnet_gateway_ip_update, resources.SUBNET_GATEWAY,
|
|
events.AFTER_UPDATE)
|
|
|
|
# NOTE(armax): multiple l3 service plugins (potentially out of tree) inherit
|
|
# from l3_db and may need the callbacks to be processed. Having an implicit
|
|
# subscription (through the module import) preserves the existing behavior,
|
|
# and at the same time it avoids fixing it manually in each and every l3 plugin
|
|
# out there. That said, The subscription is also made explicit in the
|
|
# reference l3 plugin. The subscription operation is idempotent so there is no
|
|
# harm in registering the same callback multiple times.
|
|
subscribe()
|