def _unbind_dvr_port_before_delete(self, context, router_id, port_host):
filter_rtr = {
'device_id': [router_id],
'device_owner': [n_const.DEVICE_OWNER_DVR_INTERFACE]
}
int_ports = self._core_plugin.get_ports(
n_utils.get_elevated_context(context), filters=filter_rtr)
for port in int_ports:
dvr_binding = (ml2_db.get_distributed_port_binding_by_host(
context, port['id'], port_host))
if dvr_binding:
# unbind this port from router
dvr_binding['router_id'] = None
dvr_binding.update(dvr_binding)
def test_get_distributed_port_binding_by_host_not_found(self):
port = ml2_db.get_distributed_port_binding_by_host(
self.ctx, 'foo_port_id', 'foo_host_id')
self.assertIsNone(port)
def get_dvr_routers_to_remove(self, context, deleted_port):
"""Returns info about which routers should be removed
In case dvr serviceable port was deleted we need to check
if any dvr routers should be removed from l3 agent on port's host
"""
if not n_utils.is_dvr_serviced(deleted_port['device_owner']):
return []
admin_context = context.elevated()
port_host = deleted_port[portbindings.HOST_ID]
subnet_ids = [ip['subnet_id'] for ip in deleted_port['fixed_ips']]
router_ids = self.get_dvr_routers_by_subnet_ids(
admin_context, subnet_ids)
if not router_ids:
LOG.debug(
'No DVR routers for this DVR port %(port)s '
'on host %(host)s', {
'port': deleted_port['id'],
'host': port_host
})
return []
agent = self._get_agent_by_type_and_host(context,
n_const.AGENT_TYPE_L3,
port_host)
removed_router_info = []
for router_id in router_ids:
snat_binding = context.session.query(
rb_model.RouterL3AgentBinding).filter_by(
router_id=router_id).filter_by(
l3_agent_id=agent.id).first()
if snat_binding:
# not removing from the agent hosting SNAT for the router
continue
subnet_ids = self.get_subnet_ids_on_router(admin_context,
router_id)
if self._check_dvr_serviceable_ports_on_host(
admin_context, port_host, subnet_ids):
continue
filter_rtr = {
'device_id': [router_id],
'device_owner': [n_const.DEVICE_OWNER_DVR_INTERFACE]
}
int_ports = self._core_plugin.get_ports(admin_context,
filters=filter_rtr)
for port in int_ports:
dvr_binding = (ml2_db.get_distributed_port_binding_by_host(
context.session, port['id'], port_host))
if dvr_binding:
# unbind this port from router
dvr_binding['router_id'] = None
dvr_binding.update(dvr_binding)
info = {
'router_id': router_id,
'host': port_host,
'agent_id': str(agent.id)
}
removed_router_info.append(info)
LOG.debug('Router %(router_id)s on host %(host)s to be deleted',
info)
return removed_router_info
def test_get_distributed_port_binding_by_host_not_found(self):
port = ml2_db.get_distributed_port_binding_by_host(
self.ctx, 'foo_port_id', 'foo_host_id')
self.assertIsNone(port)
def test_get_distributed_port_binding_by_host_not_found(self):
port_id = uuidutils.generate_uuid()
host_id = uuidutils.generate_uuid()
port = ml2_db.get_distributed_port_binding_by_host(
self.ctx, port_id, host_id)
self.assertIsNone(port)
