def _update_router_gw_info(self, context, router_id, info, router=None):
LOG.debug(_("update_router_gw_info called in l3_db.py context: %s"),
context)
LOG.debug(_("update_router_gw_info called in l3_db.py router_id: %s"),
router_id)
LOG.debug(_("update_router_gw_info called in l3_db.py info: %s"), info)
LOG.debug(_("update_router_gw_info called in l3_db.py router: %s"),
router)
# TODO(salvatore-orlando): guarantee atomic behavior also across
# operations that span beyond the model classes handled by this
# class (e.g.: delete_port)
router = router or self._get_router(context, router_id)
gw_port = router.gw_port
# network_id attribute is required by API, so it must be present
network_id = info['network_id'] if info else None
if network_id:
network_db = self._core_plugin._get_network(context, network_id)
if not network_db.external:
msg = _("Network %s is not a valid external "
"network") % network_id
raise q_exc.BadRequest(resource='router', msg=msg)
# figure out if we need to delete existing port
if gw_port and gw_port['network_id'] != network_id:
fip_count = self.get_floatingips_count(context.elevated(),
{'router_id': [router_id]})
if fip_count:
raise l3.RouterExternalGatewayInUseByFloatingIp(
router_id=router_id, net_id=gw_port['network_id'])
if gw_port and gw_port['network_id'] != network_id:
with context.session.begin(subtransactions=True):
router.gw_port = None
context.session.add(router)
self._core_plugin.delete_port(context.elevated(),
gw_port['id'],
l3_port_check=False)
if network_id is not None and (gw_port is None
or gw_port['network_id'] != network_id):
subnets = self._core_plugin._get_subnets_by_network(
context, network_id)
for subnet in subnets:
self._check_for_dup_router_subnet(context, router_id,
network_id, subnet['id'],
subnet['cidr'])
self._create_router_gw_port(context, router, network_id)
def _delete_current_gw_port(self, context, router_id, router, new_network):
"""Delete gw port, if it is attached to an old network."""
is_gw_port_attached_to_existing_network = (
router.gw_port and router.gw_port['network_id'] != new_network)
admin_ctx = context.elevated()
if is_gw_port_attached_to_existing_network:
if self.get_floatingips_count(admin_ctx,
{'router_id': [router_id]}):
raise l3.RouterExternalGatewayInUseByFloatingIp(
router_id=router_id, net_id=router.gw_port['network_id'])
with context.session.begin(subtransactions=True):
gw_port_id = router.gw_port['id']
router.gw_port = None
context.session.add(router)
self._core_plugin.delete_port(admin_ctx,
gw_port_id,
l3_port_check=False)
def _delete_current_gw_port(self, context, router_id, router, new_network):
"""Delete gw port if attached to an old network or IPs changed."""
port_requires_deletion = (router.gw_port and
router.gw_port['network_id'] != new_network)
if not port_requires_deletion:
return
admin_ctx = context.elevated()
if self.get_floatingips_count(admin_ctx, {'router_id': [router_id]}):
raise l3.RouterExternalGatewayInUseByFloatingIp(
router_id=router_id, net_id=router.gw_port['network_id'])
gw_port = router.gw_port
with context.session.begin(subtransactions=True):
router.gw_port = None
context.session.add(router)
context.session.expire(gw_port)
self._check_router_gw_port_in_use(context, router_id)
self._delete_router_port(context, router_id, gw_port, external_gw=True)