Dynamic routing services for OpenStack Neutron.
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# Copyright 2016 Hewlett Packard Enterprise Development Company LP
#
# Licensed under the Apache License, Version 2.0 (the "License"); you may
# not use this file except in compliance with the License. You may obtain
# a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
# License for the specific language governing permissions and limitations
# under the License.
import itertools
from oslo_db import exception as oslo_db_exc
from oslo_log import log as logging
from oslo_utils import uuidutils
import sqlalchemy as sa
from sqlalchemy import and_
from sqlalchemy import orm
from sqlalchemy.orm import aliased
from sqlalchemy.orm import exc as sa_exc
from neutron_lib import constants as lib_consts
from neutron._i18n import _
from neutron.api.v2 import attributes as attr
from neutron.common import exceptions as n_exc
from neutron.db import address_scope_db
from neutron.db import common_db_mixin as common_db
from neutron.db import l3_attrs_db
from neutron.db import l3_db
from neutron.db import model_base
from neutron.db import models_v2
from neutron.extensions import bgp as bgp_ext
from neutron.plugins.ml2 import models as ml2_models
LOG = logging.getLogger(__name__)
DEVICE_OWNER_ROUTER_GW = lib_consts.DEVICE_OWNER_ROUTER_GW
DEVICE_OWNER_ROUTER_INTF = lib_consts.DEVICE_OWNER_ROUTER_INTF
class BgpSpeakerPeerBinding(model_base.BASEV2):
"""Represents a mapping between BGP speaker and BGP peer"""
__tablename__ = 'bgp_speaker_peer_bindings'
bgp_speaker_id = sa.Column(sa.String(length=36),
sa.ForeignKey('bgp_speakers.id',
ondelete='CASCADE'),
nullable=False,
primary_key=True)
bgp_peer_id = sa.Column(sa.String(length=36),
sa.ForeignKey('bgp_peers.id',
ondelete='CASCADE'),
nullable=False,
primary_key=True)
class BgpSpeakerNetworkBinding(model_base.BASEV2):
"""Represents a mapping between a network and BGP speaker"""
__tablename__ = 'bgp_speaker_network_bindings'
bgp_speaker_id = sa.Column(sa.String(length=36),
sa.ForeignKey('bgp_speakers.id',
ondelete='CASCADE'),
nullable=False,
primary_key=True)
network_id = sa.Column(sa.String(length=36),
sa.ForeignKey('networks.id',
ondelete='CASCADE'),
nullable=False,
primary_key=True)
ip_version = sa.Column(sa.Integer, nullable=False, autoincrement=False,
primary_key=True)
class BgpSpeaker(model_base.BASEV2,
model_base.HasId,
model_base.HasTenant):
"""Represents a BGP speaker"""
__tablename__ = 'bgp_speakers'
name = sa.Column(sa.String(attr.NAME_MAX_LEN), nullable=False)
local_as = sa.Column(sa.Integer, nullable=False, autoincrement=False)
advertise_floating_ip_host_routes = sa.Column(sa.Boolean, nullable=False)
advertise_tenant_networks = sa.Column(sa.Boolean, nullable=False)
peers = orm.relationship(BgpSpeakerPeerBinding,
backref='bgp_speaker_peer_bindings',
cascade='all, delete, delete-orphan',
lazy='joined')
networks = orm.relationship(BgpSpeakerNetworkBinding,
backref='bgp_speaker_network_bindings',
cascade='all, delete, delete-orphan',
lazy='joined')
ip_version = sa.Column(sa.Integer, nullable=False, autoincrement=False)
class BgpPeer(model_base.BASEV2,
model_base.HasId,
model_base.HasTenant):
"""Represents a BGP routing peer."""
__tablename__ = 'bgp_peers'
name = sa.Column(sa.String(attr.NAME_MAX_LEN), nullable=False)
peer_ip = sa.Column(sa.String(64),
nullable=False)
remote_as = sa.Column(sa.Integer, nullable=False, autoincrement=False)
auth_type = sa.Column(sa.String(16), nullable=False)
password = sa.Column(sa.String(255), nullable=True)
class BgpDbMixin(common_db.CommonDbMixin):
def create_bgp_speaker(self, context, bgp_speaker):
uuid = uuidutils.generate_uuid()
self._save_bgp_speaker(context, bgp_speaker, uuid)
return self.get_bgp_speaker(context, uuid)
def get_bgp_speakers(self, context, filters=None, fields=None,
sorts=None, limit=None, marker=None,
page_reverse=False):
with context.session.begin(subtransactions=True):
return self._get_collection(context, BgpSpeaker,
self._make_bgp_speaker_dict,
filters=filters, fields=fields,
sorts=sorts, limit=limit,
page_reverse=page_reverse)
def get_bgp_speaker(self, context, bgp_speaker_id, fields=None):
with context.session.begin(subtransactions=True):
bgp_speaker = self._get_bgp_speaker(context, bgp_speaker_id)
return self._make_bgp_speaker_dict(bgp_speaker, fields)
def get_bgp_speaker_with_advertised_routes(self, context,
bgp_speaker_id):
bgp_speaker_attrs = ['id', 'local_as', 'tenant_id']
bgp_peer_attrs = ['peer_ip', 'remote_as', 'password']
with context.session.begin(subtransactions=True):
bgp_speaker = self.get_bgp_speaker(context, bgp_speaker_id,
fields=bgp_speaker_attrs)
res = dict((k, bgp_speaker[k]) for k in bgp_speaker_attrs)
res['peers'] = self.get_bgp_peers_by_bgp_speaker(context,
bgp_speaker['id'],
fields=bgp_peer_attrs)
res['advertised_routes'] = self.get_routes_by_bgp_speaker_id(
context,
bgp_speaker_id)
return res
def update_bgp_speaker(self, context, bgp_speaker_id, bgp_speaker):
bp = bgp_speaker[bgp_ext.BGP_SPEAKER_BODY_KEY_NAME]
with context.session.begin(subtransactions=True):
bgp_speaker_db = self._get_bgp_speaker(context, bgp_speaker_id)
bgp_speaker_db.update(bp)
bgp_speaker_dict = self._make_bgp_speaker_dict(bgp_speaker_db)
return bgp_speaker_dict
def _save_bgp_speaker(self, context, bgp_speaker, uuid):
ri = bgp_speaker[bgp_ext.BGP_SPEAKER_BODY_KEY_NAME]
ri['tenant_id'] = context.tenant_id
with context.session.begin(subtransactions=True):
res_keys = ['local_as', 'tenant_id', 'name', 'ip_version',
'advertise_floating_ip_host_routes',
'advertise_tenant_networks']
res = dict((k, ri[k]) for k in res_keys)
res['id'] = uuid
bgp_speaker_db = BgpSpeaker(**res)
context.session.add(bgp_speaker_db)
def add_bgp_peer(self, context, bgp_speaker_id, bgp_peer_info):
bgp_peer_id = self._get_id_for(bgp_peer_info, 'bgp_peer_id')
self._save_bgp_speaker_peer_binding(context,
bgp_speaker_id,
bgp_peer_id)
return {'bgp_peer_id': bgp_peer_id}
def remove_bgp_peer(self, context, bgp_speaker_id, bgp_peer_info):
bgp_peer_id = self._get_id_for(bgp_peer_info, 'bgp_peer_id')
self._remove_bgp_speaker_peer_binding(context,
bgp_speaker_id,
bgp_peer_id)
return {'bgp_peer_id': bgp_peer_id}
def add_gateway_network(self, context, bgp_speaker_id, network_info):
network_id = self._get_id_for(network_info, 'network_id')
with context.session.begin(subtransactions=True):
try:
self._save_bgp_speaker_network_binding(context,
bgp_speaker_id,
network_id)
except oslo_db_exc.DBDuplicateEntry:
raise bgp_ext.BgpSpeakerNetworkBindingError(
network_id=network_id,
bgp_speaker_id=bgp_speaker_id)
return {'network_id': network_id}
def remove_gateway_network(self, context, bgp_speaker_id, network_info):
with context.session.begin(subtransactions=True):
network_id = self._get_id_for(network_info, 'network_id')
self._remove_bgp_speaker_network_binding(context,
bgp_speaker_id,
network_id)
return {'network_id': network_id}
def delete_bgp_speaker(self, context, bgp_speaker_id):
with context.session.begin(subtransactions=True):
bgp_speaker_db = self._get_bgp_speaker(context, bgp_speaker_id)
context.session.delete(bgp_speaker_db)
def create_bgp_peer(self, context, bgp_peer):
ri = bgp_peer[bgp_ext.BGP_PEER_BODY_KEY_NAME]
auth_type = ri.get('auth_type')
password = ri.get('password')
if auth_type == 'md5' and not password:
raise bgp_ext.InvalidBgpPeerMd5Authentication()
with context.session.begin(subtransactions=True):
res_keys = ['tenant_id', 'name', 'remote_as', 'peer_ip',
'auth_type', 'password']
res = dict((k, ri[k]) for k in res_keys)
res['id'] = uuidutils.generate_uuid()
bgp_peer_db = BgpPeer(**res)
context.session.add(bgp_peer_db)
peer = self._make_bgp_peer_dict(bgp_peer_db)
peer.pop('password')
return peer
def get_bgp_peers(self, context, fields=None, filters=None, sorts=None,
limit=None, marker=None, page_reverse=False):
return self._get_collection(context, BgpPeer,
self._make_bgp_peer_dict,
filters=filters, fields=fields,
sorts=sorts, limit=limit,
page_reverse=page_reverse)
def get_bgp_peers_by_bgp_speaker(self, context,
bgp_speaker_id, fields=None):
filters = [BgpSpeakerPeerBinding.bgp_speaker_id == bgp_speaker_id,
BgpSpeakerPeerBinding.bgp_peer_id == BgpPeer.id]
with context.session.begin(subtransactions=True):
query = context.session.query(BgpPeer)
query = query.filter(*filters)
return [self._make_bgp_peer_dict(x) for x in query.all()]
def get_bgp_peer(self, context, bgp_peer_id, fields=None):
bgp_peer_db = self._get_bgp_peer(context, bgp_peer_id)
return self._make_bgp_peer_dict(bgp_peer_db, fields=fields)
def delete_bgp_peer(self, context, bgp_peer_id):
with context.session.begin(subtransactions=True):
bgp_peer_db = self._get_bgp_peer(context, bgp_peer_id)
context.session.delete(bgp_peer_db)
def update_bgp_peer(self, context, bgp_peer_id, bgp_peer):
bp = bgp_peer[bgp_ext.BGP_PEER_BODY_KEY_NAME]
with context.session.begin(subtransactions=True):
bgp_peer_db = self._get_bgp_peer(context, bgp_peer_id)
if ((bp['password'] is not None) and
(bgp_peer_db['auth_type'] == 'none')):
raise bgp_ext.BgpPeerNotAuthenticated(bgp_peer_id=bgp_peer_id)
bgp_peer_db.update(bp)
bgp_peer_dict = self._make_bgp_peer_dict(bgp_peer_db)
return bgp_peer_dict
def _get_bgp_speaker(self, context, bgp_speaker_id):
try:
return self._get_by_id(context, BgpSpeaker,
bgp_speaker_id)
except sa_exc.NoResultFound:
raise bgp_ext.BgpSpeakerNotFound(id=bgp_speaker_id)
def _get_bgp_speaker_ids_by_router(self, context, router_id):
with context.session.begin(subtransactions=True):
network_binding = aliased(BgpSpeakerNetworkBinding)
r_port = aliased(l3_db.RouterPort)
query = context.session.query(network_binding.bgp_speaker_id)
query = query.filter(
r_port.router_id == router_id,
r_port.port_type == lib_consts.DEVICE_OWNER_ROUTER_GW,
r_port.port_id == models_v2.Port.id,
models_v2.Port.network_id == network_binding.network_id)
return [binding.bgp_speaker_id for binding in query.all()]
def _get_bgp_speaker_ids_by_binding_network(self, context, network_id):
with context.session.begin(subtransactions=True):
query = context.session.query(
BgpSpeakerNetworkBinding.bgp_speaker_id)
query = query.filter(
BgpSpeakerNetworkBinding.network_id == network_id)
return query.all()
def get_advertised_routes(self, context, bgp_speaker_id):
routes = self.get_routes_by_bgp_speaker_id(context, bgp_speaker_id)
return self._make_advertised_routes_dict(routes)
def _get_id_for(self, resource, id_name):
try:
return resource.get(id_name)
except AttributeError:
msg = _("%s must be specified") % id_name
raise n_exc.BadRequest(resource=bgp_ext.BGP_SPEAKER_RESOURCE_NAME,
msg=msg)
def _get_bgp_peers_by_bgp_speaker_binding(self, context, bgp_speaker_id):
with context.session.begin(subtransactions=True):
query = context.session.query(BgpPeer)
query = query.filter(
BgpSpeakerPeerBinding.bgp_speaker_id == bgp_speaker_id,
BgpSpeakerPeerBinding.bgp_peer_id == BgpPeer.id)
return query.all()
def _save_bgp_speaker_peer_binding(self, context, bgp_speaker_id,
bgp_peer_id):
with context.session.begin(subtransactions=True):
try:
bgp_speaker = self._get_by_id(context, BgpSpeaker,
bgp_speaker_id)
except sa_exc.NoResultFound:
raise bgp_ext.BgpSpeakerNotFound(id=bgp_speaker_id)
try:
bgp_peer = self._get_by_id(context, BgpPeer,
bgp_peer_id)
except sa_exc.NoResultFound:
raise bgp_ext.BgpPeerNotFound(id=bgp_peer_id)
peers = self._get_bgp_peers_by_bgp_speaker_binding(context,
bgp_speaker_id)
self._validate_peer_ips(bgp_speaker_id, peers, bgp_peer)
binding = BgpSpeakerPeerBinding(bgp_speaker_id=bgp_speaker.id,
bgp_peer_id=bgp_peer.id)
context.session.add(binding)
def _validate_peer_ips(self, bgp_speaker_id, current_peers, new_peer):
for peer in current_peers:
if peer.peer_ip == new_peer.peer_ip:
raise bgp_ext.DuplicateBgpPeerIpException(
bgp_peer_id=new_peer.id,
peer_ip=new_peer.peer_ip,
bgp_speaker_id=bgp_speaker_id)
def _remove_bgp_speaker_peer_binding(self, context, bgp_speaker_id,
bgp_peer_id):
with context.session.begin(subtransactions=True):
try:
binding = self._get_bgp_speaker_peer_binding(context,
bgp_speaker_id,
bgp_peer_id)
except sa_exc.NoResultFound:
raise bgp_ext.BgpSpeakerPeerNotAssociated(
bgp_peer_id=bgp_peer_id,
bgp_speaker_id=bgp_speaker_id)
context.session.delete(binding)
def _save_bgp_speaker_network_binding(self,
context,
bgp_speaker_id,
network_id):
with context.session.begin(subtransactions=True):
try:
bgp_speaker = self._get_by_id(context, BgpSpeaker,
bgp_speaker_id)
except sa_exc.NoResultFound:
raise bgp_ext.BgpSpeakerNotFound(id=bgp_speaker_id)
try:
network = self._get_by_id(context, models_v2.Network,
network_id)
except sa_exc.NoResultFound:
raise n_exc.NetworkNotFound(net_id=network_id)
binding = BgpSpeakerNetworkBinding(
bgp_speaker_id=bgp_speaker.id,
network_id=network.id,
ip_version=bgp_speaker.ip_version)
context.session.add(binding)
def _remove_bgp_speaker_network_binding(self, context,
bgp_speaker_id, network_id):
with context.session.begin(subtransactions=True):
try:
binding = self._get_bgp_speaker_network_binding(
context,
bgp_speaker_id,
network_id)
except sa_exc.NoResultFound:
raise bgp_ext.BgpSpeakerNetworkNotAssociated(
network_id=network_id,
bgp_speaker_id=bgp_speaker_id)
context.session.delete(binding)
def _make_bgp_speaker_dict(self, bgp_speaker, fields=None):
attrs = {'id', 'local_as', 'tenant_id', 'name', 'ip_version',
'advertise_floating_ip_host_routes',
'advertise_tenant_networks'}
peer_bindings = bgp_speaker['peers']
network_bindings = bgp_speaker['networks']
res = dict((k, bgp_speaker[k]) for k in attrs)
res['peers'] = [x.bgp_peer_id for x in peer_bindings]
res['networks'] = [x.network_id for x in network_bindings]
return self._fields(res, fields)
def _make_advertised_routes_dict(self, routes):
return {'advertised_routes': list(routes)}
def _get_bgp_peer(self, context, bgp_peer_id):
try:
return self._get_by_id(context, BgpPeer, bgp_peer_id)
except sa_exc.NoResultFound:
raise bgp_ext.BgpPeerNotFound(id=bgp_peer_id)
def _get_bgp_speaker_peer_binding(self, context,
bgp_speaker_id, bgp_peer_id):
query = self._model_query(context, BgpSpeakerPeerBinding)
return query.filter(
BgpSpeakerPeerBinding.bgp_speaker_id == bgp_speaker_id,
BgpSpeakerPeerBinding.bgp_peer_id == bgp_peer_id).one()
def _get_bgp_speaker_network_binding(self, context,
bgp_speaker_id, network_id):
query = self._model_query(context, BgpSpeakerNetworkBinding)
return query.filter(bgp_speaker_id == bgp_speaker_id,
network_id == network_id).one()
def _make_bgp_peer_dict(self, bgp_peer, fields=None):
attrs = ['tenant_id', 'id', 'name', 'peer_ip', 'remote_as',
'auth_type', 'password']
res = dict((k, bgp_peer[k]) for k in attrs)
return self._fields(res, fields)
def _get_address_scope_ids_for_bgp_speaker(self, context, bgp_speaker_id):
with context.session.begin(subtransactions=True):
binding = aliased(BgpSpeakerNetworkBinding)
address_scope = aliased(address_scope_db.AddressScope)
query = context.session.query(address_scope)
query = query.filter(
binding.bgp_speaker_id == bgp_speaker_id,
models_v2.Subnet.ip_version == binding.ip_version,
models_v2.Subnet.network_id == binding.network_id,
models_v2.Subnet.subnetpool_id == models_v2.SubnetPool.id,
models_v2.SubnetPool.address_scope_id == address_scope.id)
return [scope.id for scope in query.all()]
def get_routes_by_bgp_speaker_id(self, context, bgp_speaker_id):
"""Get all routes that should be advertised by a BgpSpeaker."""
with context.session.begin(subtransactions=True):
net_routes = self._get_tenant_network_routes_by_bgp_speaker(
context,
bgp_speaker_id)
fip_routes = self._get_central_fip_host_routes_by_bgp_speaker(
context,
bgp_speaker_id)
dvr_fip_routes = self._get_dvr_fip_host_routes_by_bgp_speaker(
context,
bgp_speaker_id)
return itertools.chain(fip_routes, net_routes, dvr_fip_routes)
def get_routes_by_bgp_speaker_binding(self, context,
bgp_speaker_id, network_id):
"""Get all routes for the given bgp_speaker binding."""
with context.session.begin(subtransactions=True):
fip_routes = self._get_central_fip_host_routes_by_binding(
context,
network_id,
bgp_speaker_id)
net_routes = self._get_tenant_network_routes_by_binding(
context,
network_id,
bgp_speaker_id)
dvr_fip_routes = self._get_dvr_fip_host_routes_by_binding(
context,
network_id,
bgp_speaker_id)
return itertools.chain(fip_routes, net_routes, dvr_fip_routes)
def _get_routes_by_router(self, context, router_id):
bgp_speaker_ids = self._get_bgp_speaker_ids_by_router(context,
router_id)
route_dict = {}
for bgp_speaker_id in bgp_speaker_ids:
fip_routes = self._get_central_fip_host_routes_by_router(
context,
router_id,
bgp_speaker_id)
net_routes = self._get_tenant_network_routes_by_router(
context,
router_id,
bgp_speaker_id)
dvr_fip_routes = self._get_dvr_fip_host_routes_by_router(
context,
router_id,
bgp_speaker_id)
routes = itertools.chain(fip_routes, net_routes, dvr_fip_routes)
route_dict[bgp_speaker_id] = list(routes)
return route_dict
def _get_central_fip_host_routes_by_router(self, context, router_id,
bgp_speaker_id):
"""Get floating IP host routes with the given router as nexthop."""
with context.session.begin(subtransactions=True):
dest_alias = aliased(l3_db.FloatingIP,
name='destination')
next_hop_alias = aliased(models_v2.IPAllocation,
name='next_hop')
binding_alias = aliased(BgpSpeakerNetworkBinding,
name='binding')
router_attrs = aliased(l3_attrs_db.RouterExtraAttributes,
name='router_attrs')
query = context.session.query(dest_alias.floating_ip_address,
next_hop_alias.ip_address)
query = query.join(
next_hop_alias,
next_hop_alias.network_id == dest_alias.floating_network_id)
query = query.join(l3_db.Router,
dest_alias.router_id == l3_db.Router.id)
query = query.filter(
l3_db.Router.id == router_id,
dest_alias.router_id == l3_db.Router.id,
l3_db.Router.id == router_attrs.router_id,
router_attrs.distributed == sa.sql.false(),
l3_db.Router.gw_port_id == next_hop_alias.port_id,
next_hop_alias.subnet_id == models_v2.Subnet.id,
models_v2.Subnet.ip_version == 4,
binding_alias.network_id == models_v2.Subnet.network_id,
binding_alias.bgp_speaker_id == bgp_speaker_id,
binding_alias.ip_version == 4,
BgpSpeaker.advertise_floating_ip_host_routes == sa.sql.true())
query = query.outerjoin(router_attrs,
l3_db.Router.id == router_attrs.router_id)
query = query.filter(router_attrs.distributed != sa.sql.true())
return self._host_route_list_from_tuples(query.all())
def _get_dvr_fip_host_routes_by_router(self, context, bgp_speaker_id,
router_id):
with context.session.begin(subtransactions=True):
gw_query = self._get_gateway_query(context, bgp_speaker_id)
fip_query = self._get_fip_query(context, bgp_speaker_id)
fip_query.filter(l3_db.FloatingIP.router_id == router_id)
#Create the join query
join_query = self._join_fip_by_host_binding_to_agent_gateway(
context,
fip_query.subquery(),
gw_query.subquery())
return self._host_route_list_from_tuples(join_query.all())
def _get_central_fip_host_routes_by_binding(self, context,
network_id, bgp_speaker_id):
"""Get all floating IP host routes for the given network binding."""
with context.session.begin(subtransactions=True):
# Query the DB for floating IP's and the IP address of the
# gateway port
dest_alias = aliased(l3_db.FloatingIP,
name='destination')
next_hop_alias = aliased(models_v2.IPAllocation,
name='next_hop')
binding_alias = aliased(BgpSpeakerNetworkBinding,
name='binding')
router_attrs = aliased(l3_attrs_db.RouterExtraAttributes,
name='router_attrs')
query = context.session.query(dest_alias.floating_ip_address,
next_hop_alias.ip_address)
query = query.join(
next_hop_alias,
next_hop_alias.network_id == dest_alias.floating_network_id)
query = query.join(
binding_alias,
binding_alias.network_id == dest_alias.floating_network_id)
query = query.join(l3_db.Router,
dest_alias.router_id == l3_db.Router.id)
query = query.filter(
dest_alias.floating_network_id == network_id,
dest_alias.router_id == l3_db.Router.id,
l3_db.Router.gw_port_id == next_hop_alias.port_id,
next_hop_alias.subnet_id == models_v2.Subnet.id,
models_v2.Subnet.ip_version == 4,
binding_alias.network_id == models_v2.Subnet.network_id,
binding_alias.bgp_speaker_id == BgpSpeaker.id,
BgpSpeaker.id == bgp_speaker_id,
BgpSpeaker.advertise_floating_ip_host_routes == sa.sql.true())
query = query.outerjoin(router_attrs,
l3_db.Router.id == router_attrs.router_id)
query = query.filter(router_attrs.distributed != sa.sql.true())
return self._host_route_list_from_tuples(query.all())
def _get_dvr_fip_host_routes_by_binding(self, context, network_id,
bgp_speaker_id):
with context.session.begin(subtransactions=True):
BgpBinding = BgpSpeakerNetworkBinding
gw_query = self._get_gateway_query(context, bgp_speaker_id)
gw_query.filter(BgpBinding.network_id == network_id)
fip_query = self._get_fip_query(context, bgp_speaker_id)
fip_query.filter(BgpBinding.network_id == network_id)
#Create the join query
join_query = self._join_fip_by_host_binding_to_agent_gateway(
context,
fip_query.subquery(),
gw_query.subquery())
return self._host_route_list_from_tuples(join_query.all())
def _get_central_fip_host_routes_by_bgp_speaker(self, context,
bgp_speaker_id):
"""Get all the floating IP host routes advertised by a BgpSpeaker."""
with context.session.begin(subtransactions=True):
dest_alias = aliased(l3_db.FloatingIP,
name='destination')
next_hop_alias = aliased(models_v2.IPAllocation,
name='next_hop')
speaker_binding = aliased(BgpSpeakerNetworkBinding,
name="speaker_network_mapping")
router_attrs = aliased(l3_attrs_db.RouterExtraAttributes,
name='router_attrs')
query = context.session.query(dest_alias.floating_ip_address,
next_hop_alias.ip_address)
query = query.select_from(dest_alias,
BgpSpeaker,
l3_db.Router,
models_v2.Subnet)
query = query.join(
next_hop_alias,
next_hop_alias.network_id == dest_alias.floating_network_id)
query = query.join(
speaker_binding,
speaker_binding.network_id == dest_alias.floating_network_id)
query = query.join(l3_db.Router,
dest_alias.router_id == l3_db.Router.id)
query = query.filter(
BgpSpeaker.id == bgp_speaker_id,
BgpSpeaker.advertise_floating_ip_host_routes,
speaker_binding.bgp_speaker_id == BgpSpeaker.id,
dest_alias.floating_network_id == speaker_binding.network_id,
next_hop_alias.network_id == speaker_binding.network_id,
dest_alias.router_id == l3_db.Router.id,
l3_db.Router.gw_port_id == next_hop_alias.port_id,
next_hop_alias.subnet_id == models_v2.Subnet.id,
models_v2.Subnet.ip_version == 4)
query = query.outerjoin(router_attrs,
l3_db.Router.id == router_attrs.router_id)
query = query.filter(router_attrs.distributed != sa.sql.true())
return self._host_route_list_from_tuples(query.all())
def _get_gateway_query(self, context, bgp_speaker_id):
BgpBinding = BgpSpeakerNetworkBinding
ML2PortBinding = ml2_models.PortBinding
IpAllocation = models_v2.IPAllocation
Port = models_v2.Port
gw_query = context.session.query(Port.network_id,
ML2PortBinding.host,
IpAllocation.ip_address)
#Subquery for FIP agent gateway ports
gw_query = gw_query.filter(
ML2PortBinding.port_id == Port.id,
IpAllocation.port_id == Port.id,
IpAllocation.subnet_id == models_v2.Subnet.id,
models_v2.Subnet.ip_version == 4,
Port.device_owner == lib_consts.DEVICE_OWNER_AGENT_GW,
Port.network_id == BgpBinding.network_id,
BgpBinding.bgp_speaker_id == bgp_speaker_id,
BgpBinding.ip_version == 4)
return gw_query
def _get_fip_query(self, context, bgp_speaker_id):
BgpBinding = BgpSpeakerNetworkBinding
ML2PortBinding = ml2_models.PortBinding
#Subquery for floating IP's
fip_query = context.session.query(
l3_db.FloatingIP.floating_network_id,
ML2PortBinding.host,
l3_db.FloatingIP.floating_ip_address)
fip_query = fip_query.filter(
l3_db.FloatingIP.fixed_port_id == ML2PortBinding.port_id,
l3_db.FloatingIP.floating_network_id == BgpBinding.network_id,
BgpBinding.bgp_speaker_id == bgp_speaker_id)
return fip_query
def _get_dvr_fip_host_routes_by_bgp_speaker(self, context,
bgp_speaker_id):
with context.session.begin(subtransactions=True):
gw_query = self._get_gateway_query(context, bgp_speaker_id)
fip_query = self._get_fip_query(context, bgp_speaker_id)
#Create the join query
join_query = self._join_fip_by_host_binding_to_agent_gateway(
context,
fip_query.subquery(),
gw_query.subquery())
return self._host_route_list_from_tuples(join_query.all())
def _join_fip_by_host_binding_to_agent_gateway(self, context,
fip_subq, gw_subq):
join_query = context.session.query(fip_subq.c.floating_ip_address,
gw_subq.c.ip_address)
and_cond = and_(
gw_subq.c.host == fip_subq.c.host,
gw_subq.c.network_id == fip_subq.c.floating_network_id)
return join_query.join(gw_subq, and_cond)
def _get_tenant_network_routes_by_binding(self, context,
network_id, bgp_speaker_id):
"""Get all tenant network routes for the given network."""
with context.session.begin(subtransactions=True):
tenant_networks_query = self._tenant_networks_by_network_query(
context,
network_id,
bgp_speaker_id)
nexthops_query = self._nexthop_ip_addresses_by_binding_query(
context,
network_id,
bgp_speaker_id)
join_q = self._join_tenant_networks_to_next_hops(
context,
tenant_networks_query.subquery(),
nexthops_query.subquery())
return self._make_advertised_routes_list(join_q.all())
def _get_tenant_network_routes_by_router(self, context, router_id,
bgp_speaker_id):
"""Get all tenant network routes with the given router as nexthop."""
with context.session.begin(subtransactions=True):
scopes = self._get_address_scope_ids_for_bgp_speaker(
context,
bgp_speaker_id)
address_scope = aliased(address_scope_db.AddressScope)
inside_query = context.session.query(
models_v2.Subnet.cidr,
models_v2.IPAllocation.ip_address,
address_scope.id)
outside_query = context.session.query(
address_scope.id,
models_v2.IPAllocation.ip_address)
speaker_binding = aliased(BgpSpeakerNetworkBinding,
name="speaker_network_mapping")
port_alias = aliased(l3_db.RouterPort, name='routerport')
inside_query = inside_query.filter(
port_alias.router_id == router_id,
models_v2.IPAllocation.port_id == port_alias.port_id,
models_v2.IPAllocation.subnet_id == models_v2.Subnet.id,
models_v2.Subnet.subnetpool_id == models_v2.SubnetPool.id,
models_v2.SubnetPool.address_scope_id == address_scope.id,
address_scope.id.in_(scopes),
port_alias.port_type != lib_consts.DEVICE_OWNER_ROUTER_GW,
speaker_binding.bgp_speaker_id == bgp_speaker_id)
outside_query = outside_query.filter(
port_alias.router_id == router_id,
port_alias.port_type == lib_consts.DEVICE_OWNER_ROUTER_GW,
models_v2.IPAllocation.port_id == port_alias.port_id,
models_v2.IPAllocation.subnet_id == models_v2.Subnet.id,
models_v2.Subnet.subnetpool_id == models_v2.SubnetPool.id,
models_v2.SubnetPool.address_scope_id == address_scope.id,
address_scope.id.in_(scopes),
speaker_binding.bgp_speaker_id == bgp_speaker_id,
speaker_binding.network_id == models_v2.Port.network_id,
port_alias.port_id == models_v2.Port.id)
inside_query = inside_query.subquery()
outside_query = outside_query.subquery()
join_query = context.session.query(inside_query.c.cidr,
outside_query.c.ip_address)
and_cond = and_(inside_query.c.id == outside_query.c.id)
join_query = join_query.join(outside_query, and_cond)
return self._make_advertised_routes_list(join_query.all())
def _get_tenant_network_routes_by_bgp_speaker(self, context,
bgp_speaker_id):
"""Get all tenant network routes to be advertised by a BgpSpeaker."""
with context.session.begin(subtransactions=True):
tenant_nets_q = self._tenant_networks_by_bgp_speaker_query(
context,
bgp_speaker_id)
nexthops_q = self._nexthop_ip_addresses_by_bgp_speaker_query(
context,
bgp_speaker_id)
join_q = self._join_tenant_networks_to_next_hops(
context,
tenant_nets_q.subquery(),
nexthops_q.subquery())
return self._make_advertised_routes_list(join_q.all())
def _join_tenant_networks_to_next_hops(self, context,
tenant_networks_subquery,
nexthops_subquery):
"""Join subquery for tenant networks to subquery for nexthop IP's"""
left_subq = tenant_networks_subquery
right_subq = nexthops_subquery
join_query = context.session.query(left_subq.c.cidr,
right_subq.c.ip_address)
and_cond = and_(left_subq.c.router_id == right_subq.c.router_id,
left_subq.c.ip_version == right_subq.c.ip_version)
join_query = join_query.join(right_subq, and_cond)
return join_query
def _tenant_networks_by_network_query(self, context,
network_id, bgp_speaker_id):
"""Return subquery for tenant networks by binding network ID"""
address_scope = aliased(address_scope_db.AddressScope,
name='address_scope')
router_attrs = aliased(l3_attrs_db.RouterExtraAttributes,
name='router_attrs')
tenant_networks_query = context.session.query(
l3_db.RouterPort.router_id,
models_v2.Subnet.cidr,
models_v2.Subnet.ip_version,
address_scope.id)
tenant_networks_query = tenant_networks_query.filter(
l3_db.RouterPort.port_type != lib_consts.DEVICE_OWNER_ROUTER_GW,
l3_db.RouterPort.port_type != lib_consts.DEVICE_OWNER_ROUTER_SNAT,
l3_db.RouterPort.router_id == router_attrs.router_id,
models_v2.IPAllocation.port_id == l3_db.RouterPort.port_id,
models_v2.IPAllocation.subnet_id == models_v2.Subnet.id,
models_v2.Subnet.network_id != network_id,
models_v2.Subnet.subnetpool_id == models_v2.SubnetPool.id,
models_v2.SubnetPool.address_scope_id == address_scope.id,
BgpSpeaker.id == bgp_speaker_id,
BgpSpeaker.ip_version == address_scope.ip_version,
models_v2.Subnet.ip_version == address_scope.ip_version)
return tenant_networks_query
def _tenant_networks_by_bgp_speaker_query(self, context, bgp_speaker_id):
"""Return subquery for tenant networks by binding bgp_speaker_id"""
router_id = l3_db.RouterPort.router_id.distinct().label('router_id')
tenant_nets_subq = context.session.query(router_id,
models_v2.Subnet.cidr,
models_v2.Subnet.ip_version)
scopes = self._get_address_scope_ids_for_bgp_speaker(context,
bgp_speaker_id)
filters = self._tenant_networks_by_bgp_speaker_filters(scopes)
tenant_nets_subq = tenant_nets_subq.filter(*filters)
return tenant_nets_subq
def _tenant_networks_by_bgp_speaker_filters(self, address_scope_ids):
"""Return the filters for querying tenant networks by BGP speaker"""
router_attrs = aliased(l3_attrs_db.RouterExtraAttributes,
name='router_attrs')
return [models_v2.IPAllocation.port_id == l3_db.RouterPort.port_id,
l3_db.RouterPort.router_id == router_attrs.router_id,
l3_db.RouterPort.port_type != lib_consts.DEVICE_OWNER_ROUTER_GW,
l3_db.RouterPort.port_type != lib_consts.DEVICE_OWNER_ROUTER_SNAT,
models_v2.IPAllocation.subnet_id == models_v2.Subnet.id,
models_v2.Subnet.network_id != BgpSpeakerNetworkBinding.network_id,
models_v2.Subnet.subnetpool_id == models_v2.SubnetPool.id,
models_v2.SubnetPool.address_scope_id.in_(address_scope_ids),
models_v2.Subnet.ip_version == BgpSpeakerNetworkBinding.ip_version,
BgpSpeakerNetworkBinding.bgp_speaker_id == BgpSpeaker.id,
BgpSpeaker.advertise_tenant_networks == sa.sql.true()]
def _nexthop_ip_addresses_by_binding_query(self, context,
network_id, bgp_speaker_id):
"""Return the subquery for locating nexthops by binding network"""
nexthops_query = context.session.query(
l3_db.RouterPort.router_id,
models_v2.IPAllocation.ip_address,
models_v2.Subnet.ip_version)
filters = self._next_hop_ip_addresses_by_binding_filters(
network_id,
bgp_speaker_id)
nexthops_query = nexthops_query.filter(*filters)
return nexthops_query
def _next_hop_ip_addresses_by_binding_filters(self,
network_id,
bgp_speaker_id):
"""Return the filters for querying nexthops by binding network"""
address_scope = aliased(address_scope_db.AddressScope,
name='address_scope')
return [models_v2.IPAllocation.port_id == l3_db.RouterPort.port_id,
models_v2.IPAllocation.subnet_id == models_v2.Subnet.id,
BgpSpeaker.id == bgp_speaker_id,
BgpSpeakerNetworkBinding.bgp_speaker_id == BgpSpeaker.id,
BgpSpeakerNetworkBinding.network_id == network_id,
models_v2.Subnet.network_id == BgpSpeakerNetworkBinding.network_id,
models_v2.Subnet.subnetpool_id == models_v2.SubnetPool.id,
models_v2.SubnetPool.address_scope_id == address_scope.id,
models_v2.Subnet.ip_version == address_scope.ip_version,
l3_db.RouterPort.port_type == DEVICE_OWNER_ROUTER_GW]
def _nexthop_ip_addresses_by_bgp_speaker_query(self, context,
bgp_speaker_id):
"""Return the subquery for locating nexthops by BGP speaker"""
nexthops_query = context.session.query(
l3_db.RouterPort.router_id,
models_v2.IPAllocation.ip_address,
models_v2.Subnet.ip_version)
filters = self._next_hop_ip_addresses_by_bgp_speaker_filters(
bgp_speaker_id)
nexthops_query = nexthops_query.filter(*filters)
return nexthops_query
def _next_hop_ip_addresses_by_bgp_speaker_filters(self, bgp_speaker_id):
"""Return the filters for querying nexthops by BGP speaker"""
router_attrs = aliased(l3_attrs_db.RouterExtraAttributes,
name='router_attrs')
return [l3_db.RouterPort.port_type == DEVICE_OWNER_ROUTER_GW,
l3_db.RouterPort.router_id == router_attrs.router_id,
BgpSpeakerNetworkBinding.network_id == models_v2.Subnet.network_id,
BgpSpeakerNetworkBinding.ip_version == models_v2.Subnet.ip_version,
BgpSpeakerNetworkBinding.bgp_speaker_id == bgp_speaker_id,
models_v2.IPAllocation.port_id == l3_db.RouterPort.port_id,
models_v2.IPAllocation.subnet_id == models_v2.Subnet.id]
def _tenant_prefixes_by_router(self, context, router_id, bgp_speaker_id):
with context.session.begin(subtransactions=True):
query = context.session.query(models_v2.Subnet.cidr.distinct())
filters = self._tenant_prefixes_by_router_filters(router_id,
bgp_speaker_id)
query = query.filter(*filters)
return [x[0] for x in query.all()]
def _tenant_prefixes_by_router_filters(self, router_id, bgp_speaker_id):
binding = aliased(BgpSpeakerNetworkBinding, name='network_binding')
subnetpool = aliased(models_v2.SubnetPool,
name='subnetpool')
router_attrs = aliased(l3_attrs_db.RouterExtraAttributes,
name='router_attrs')
return [models_v2.Subnet.id == models_v2.IPAllocation.subnet_id,
models_v2.Subnet.subnetpool_id == subnetpool.id,
l3_db.RouterPort.router_id == router_id,
l3_db.Router.id == l3_db.RouterPort.router_id,
l3_db.Router.id == router_attrs.router_id,
l3_db.Router.gw_port_id == models_v2.Port.id,
models_v2.Port.network_id == binding.network_id,
binding.bgp_speaker_id == BgpSpeaker.id,
l3_db.RouterPort.port_type == DEVICE_OWNER_ROUTER_INTF,
models_v2.IPAllocation.port_id == l3_db.RouterPort.port_id]
def _tenant_prefixes_by_router_interface(self,
context,
router_port_id,
bgp_speaker_id):
with context.session.begin(subtransactions=True):
query = context.session.query(models_v2.Subnet.cidr.distinct())
filters = self._tenant_prefixes_by_router_filters(router_port_id,
bgp_speaker_id)
query = query.filter(*filters)
return [x[0] for x in query.all()]
def _tenant_prefixes_by_router_port_filters(self,
router_port_id,
bgp_speaker_id):
binding = aliased(BgpSpeakerNetworkBinding, name='network_binding')
return [models_v2.Subnet.id == models_v2.IPAllocation.subnet_id,
l3_db.RouterPort.port_id == router_port_id,
l3_db.Router.id == l3_db.RouterPort.router_id,
l3_db.Router.gw_port_id == models_v2.Port.id,
models_v2.Port.network_id == binding.network_id,
binding.bgp_speaker_id == BgpSpeaker.id,
models_v2.Subnet.ip_version == binding.ip_version,
l3_db.RouterPort.port_type == DEVICE_OWNER_ROUTER_INTF,
models_v2.IPAllocation.port_id == l3_db.RouterPort.port_id]
def _bgp_speakers_for_gateway_network(self, context, network_id):
"""Return all BgpSpeakers for the given gateway network"""
with context.session.begin(subtransactions=True):
query = context.session.query(BgpSpeaker)
query = query.filter(
BgpSpeakerNetworkBinding.network_id == network_id,
BgpSpeakerNetworkBinding.bgp_speaker_id == BgpSpeaker.id)
return query.all()
def _bgp_speakers_for_gw_network_by_family(self, context,
network_id, ip_version):
"""Return the BgpSpeaker by given gateway network and ip_version"""
with context.session.begin(subtransactions=True):
query = context.session.query(BgpSpeaker)
query = query.filter(
BgpSpeakerNetworkBinding.network_id == network_id,
BgpSpeakerNetworkBinding.bgp_speaker_id == BgpSpeaker.id,
BgpSpeakerNetworkBinding.ip_version == ip_version)
return query.all()
def _make_advertised_routes_list(self, routes):
route_list = ({'destination': x,
'next_hop': y} for x, y in routes)
return route_list
def _route_list_from_prefixes_and_next_hop(self, routes, next_hop):
route_list = [{'destination': x,
'next_hop': next_hop} for x in routes]
return route_list
def _host_route_list_from_tuples(self, ip_next_hop_tuples):
"""Return the list of host routes given a list of (IP, nexthop)"""
return ({'destination': x + '/32',
'next_hop': y} for x, y in ip_next_hop_tuples)