x/vmware-nsx
Code Issues Proposed changes
1f80d73277
vmware-nsx/neutron/tests/unit/test_l3_agent.py
armando-migliaccio 65543081f8 Fix AttributeError when setting external gateway on DVR router 
DVR routers will have this manager initialized only after one
or more subnets have been attached to the router. To address
the issue, make sure the manager is defined and handle the snat
rules appropriately.

This patch also makes _update_arp_entry more defensive; this is
because the arp update process can be affected by the same issue:
the router may not have internal ports at the time the request
come in. This is likely when VM's port creation and router
configuration overlap slightly.

Closes-bug: #1353006

Change-Id: Ib46852f5b264e5ef2e2d499d3351f8974e393011
Co-authored-by: Rajeev Grover <rajeev.grover@hp.com>
2014-09-05 15:24:01 -07:00

2217 lines
96 KiB
Python
Raw Blame History

# Copyright 2012 VMware, Inc.
# All Rights Reserved.
#
# 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 contextlib
import copy
import datetime
import mock
import netaddr
from oslo.config import cfg
from testtools import matchers
from neutron.agent.common import config as agent_config
from neutron.agent import l3_agent
from neutron.agent.linux import interface
from neutron.common import config as base_config
from neutron.common import constants as l3_constants
from neutron.common import exceptions as n_exc
from neutron.common import rpc as n_rpc
from neutron.openstack.common import processutils
from neutron.openstack.common import uuidutils
from neutron.plugins.common import constants as p_const
from neutron.tests import base
_uuid = uuidutils.generate_uuid
HOSTNAME = 'myhost'
FAKE_ID = _uuid()
FAKE_ID_2 = _uuid()
FIP_PRI = 32768
class TestExclusiveRouterProcessor(base.BaseTestCase):
def setUp(self):
super(TestExclusiveRouterProcessor, self).setUp()
def test_i_am_master(self):
master = l3_agent.ExclusiveRouterProcessor(FAKE_ID)
not_master = l3_agent.ExclusiveRouterProcessor(FAKE_ID)
master_2 = l3_agent.ExclusiveRouterProcessor(FAKE_ID_2)
not_master_2 = l3_agent.ExclusiveRouterProcessor(FAKE_ID_2)
self.assertTrue(master._i_am_master())
self.assertFalse(not_master._i_am_master())
self.assertTrue(master_2._i_am_master())
self.assertFalse(not_master_2._i_am_master())
master.__exit__(None, None, None)
master_2.__exit__(None, None, None)
def test_master(self):
master = l3_agent.ExclusiveRouterProcessor(FAKE_ID)
not_master = l3_agent.ExclusiveRouterProcessor(FAKE_ID)
master_2 = l3_agent.ExclusiveRouterProcessor(FAKE_ID_2)
not_master_2 = l3_agent.ExclusiveRouterProcessor(FAKE_ID_2)
self.assertEqual(master._master, master)
self.assertEqual(not_master._master, master)
self.assertEqual(master_2._master, master_2)
self.assertEqual(not_master_2._master, master_2)
master.__exit__(None, None, None)
master_2.__exit__(None, None, None)
def test__enter__(self):
self.assertFalse(FAKE_ID in l3_agent.ExclusiveRouterProcessor._masters)
master = l3_agent.ExclusiveRouterProcessor(FAKE_ID)
master.__enter__()
self.assertTrue(FAKE_ID in l3_agent.ExclusiveRouterProcessor._masters)
master.__exit__(None, None, None)
def test__exit__(self):
master = l3_agent.ExclusiveRouterProcessor(FAKE_ID)
not_master = l3_agent.ExclusiveRouterProcessor(FAKE_ID)
master.__enter__()
self.assertTrue(FAKE_ID in l3_agent.ExclusiveRouterProcessor._masters)
not_master.__enter__()
not_master.__exit__(None, None, None)
self.assertTrue(FAKE_ID in l3_agent.ExclusiveRouterProcessor._masters)
master.__exit__(None, None, None)
self.assertFalse(FAKE_ID in l3_agent.ExclusiveRouterProcessor._masters)
def test_data_fetched_since(self):
master = l3_agent.ExclusiveRouterProcessor(FAKE_ID)
self.assertEqual(master._get_router_data_timestamp(),
datetime.datetime.min)
ts1 = datetime.datetime.utcnow() - datetime.timedelta(seconds=10)
ts2 = datetime.datetime.utcnow()
master.fetched_and_processed(ts2)
self.assertEqual(master._get_router_data_timestamp(), ts2)
master.fetched_and_processed(ts1)
self.assertEqual(master._get_router_data_timestamp(), ts2)
master.__exit__(None, None, None)
def test_updates(self):
master = l3_agent.ExclusiveRouterProcessor(FAKE_ID)
not_master = l3_agent.ExclusiveRouterProcessor(FAKE_ID)
master.queue_update(l3_agent.RouterUpdate(FAKE_ID, 0))
not_master.queue_update(l3_agent.RouterUpdate(FAKE_ID, 0))
for update in not_master.updates():
raise Exception("Only the master should process a router")
self.assertEqual(2, len([i for i in master.updates()]))
class TestLinkLocalAddrAllocator(base.BaseTestCase):
def setUp(self):
super(TestLinkLocalAddrAllocator, self).setUp()
self.subnet = netaddr.IPNetwork('169.254.31.0/24')
def test__init__(self):
a = l3_agent.LinkLocalAllocator('/file', self.subnet.cidr)
self.assertEqual('/file', a.state_file)
self.assertEqual({}, a.allocations)
def test__init__readfile(self):
with mock.patch.object(l3_agent.LinkLocalAllocator, '_read') as read:
read.return_value = ["da873ca2,169.254.31.28/31\n"]
a = l3_agent.LinkLocalAllocator('/file', self.subnet.cidr)
self.assertTrue('da873ca2' in a.remembered)
self.assertEqual({}, a.allocations)
def test_allocate(self):
a = l3_agent.LinkLocalAllocator('/file', self.subnet.cidr)
with mock.patch.object(l3_agent.LinkLocalAllocator, '_write') as write:
subnet = a.allocate('deadbeef')
self.assertTrue('deadbeef' in a.allocations)
self.assertTrue(subnet not in a.pool)
self._check_allocations(a.allocations)
write.assert_called_once_with(['deadbeef,%s\n' % subnet.cidr])
def test_allocate_from_file(self):
with mock.patch.object(l3_agent.LinkLocalAllocator, '_read') as read:
read.return_value = ["deadbeef,169.254.31.88/31\n"]
a = l3_agent.LinkLocalAllocator('/file', self.subnet.cidr)
with mock.patch.object(l3_agent.LinkLocalAllocator, '_write') as write:
subnet = a.allocate('deadbeef')
self.assertEqual(netaddr.IPNetwork('169.254.31.88/31'), subnet)
self.assertTrue(subnet not in a.pool)
self._check_allocations(a.allocations)
self.assertFalse(write.called)
def test_allocate_exhausted_pool(self):
subnet = netaddr.IPNetwork('169.254.31.0/31')
with mock.patch.object(l3_agent.LinkLocalAllocator, '_read') as read:
read.return_value = ["deadbeef,169.254.31.0/31\n"]
a = l3_agent.LinkLocalAllocator('/file', subnet.cidr)
with mock.patch.object(l3_agent.LinkLocalAllocator, '_write') as write:
allocation = a.allocate('abcdef12')
self.assertEqual(subnet, allocation)
self.assertFalse('deadbeef' in a.allocations)
self.assertTrue('abcdef12' in a.allocations)
self.assertTrue(allocation not in a.pool)
self._check_allocations(a.allocations)
write.assert_called_once_with(['abcdef12,%s\n' % allocation.cidr])
self.assertRaises(RuntimeError, a.allocate, 'deadbeef')
def test_release(self):
with mock.patch.object(l3_agent.LinkLocalAllocator, '_write') as write:
a = l3_agent.LinkLocalAllocator('/file', self.subnet.cidr)
subnet = a.allocate('deadbeef')
write.reset_mock()
a.release('deadbeef')
self.assertTrue('deadbeef' not in a.allocations)
self.assertTrue(subnet in a.pool)
self.assertEqual({}, a.allocations)
write.assert_called_once_with([])
def _check_allocations(self, allocations):
for key, subnet in allocations.items():
self.assertTrue(subnet in self.subnet)
self.assertEqual(subnet.prefixlen, 31)
def router_append_interface(router, count=1, ip_version=4, ra_mode=None,
addr_mode=None):
if ip_version == 4:
ip_pool = '35.4.%i.4'
cidr_pool = '35.4.%i.0/24'
gw_pool = '35.4.%i.1'
elif ip_version == 6:
ip_pool = 'fd01:%x::6'
cidr_pool = 'fd01:%x::/64'
gw_pool = 'fd01:%x::1'
else:
raise ValueError("Invalid ip_version: %s" % ip_version)
interfaces = router[l3_constants.INTERFACE_KEY]
current = sum(
[netaddr.IPNetwork(p['subnet']['cidr']).version == ip_version
for p in interfaces])
for i in range(current, current + count):
interfaces.append(
{'id': _uuid(),
'network_id': _uuid(),
'admin_state_up': True,
'fixed_ips': [{'ip_address': ip_pool % i,
'subnet_id': _uuid()}],
'mac_address': 'ca:fe:de:ad:be:ef',
'subnet': {'cidr': cidr_pool % i,
'gateway_ip': gw_pool % i,
'ipv6_ra_mode': ra_mode,
'ipv6_address_mode': addr_mode}})
def prepare_router_data(ip_version=4, enable_snat=None, num_internal_ports=1,
enable_floating_ip=False):
if ip_version == 4:
ip_addr = '19.4.4.4'
cidr = '19.4.4.0/24'
gateway_ip = '19.4.4.1'
elif ip_version == 6:
ip_addr = 'fd00::4'
cidr = 'fd00::/64'
gateway_ip = 'fd00::1'
else:
raise ValueError("Invalid ip_version: %s" % ip_version)
router_id = _uuid()
ex_gw_port = {'id': _uuid(),
'mac_address': 'ca:fe:de:ad:be:ef',
'network_id': _uuid(),
'fixed_ips': [{'ip_address': ip_addr,
'subnet_id': _uuid()}],
'subnet': {'cidr': cidr,
'gateway_ip': gateway_ip}}
router = {
'id': router_id,
'distributed': False,
l3_constants.INTERFACE_KEY: [],
'routes': [],
'gw_port': ex_gw_port}
if enable_floating_ip:
router[l3_constants.FLOATINGIP_KEY] = [{
'id': _uuid(),
'port_id': _uuid(),
'floating_ip_address': '19.4.4.2',
'fixed_ip_address': '10.0.0.1'}]
router_append_interface(router, count=num_internal_ports,
ip_version=ip_version)
if enable_snat is not None:
router['enable_snat'] = enable_snat
return router
def _get_subnet_id(port):
return port['fixed_ips'][0]['subnet_id']
class TestBasicRouterOperations(base.BaseTestCase):
def setUp(self):
super(TestBasicRouterOperations, self).setUp()
self.conf = agent_config.setup_conf()
self.conf.register_opts(base_config.core_opts)
self.conf.register_opts(l3_agent.L3NATAgent.OPTS)
agent_config.register_interface_driver_opts_helper(self.conf)
agent_config.register_use_namespaces_opts_helper(self.conf)
agent_config.register_root_helper(self.conf)
self.conf.register_opts(interface.OPTS)
self.conf.set_override('router_id', 'fake_id')
self.conf.set_override('interface_driver',
'neutron.agent.linux.interface.NullDriver')
self.conf.root_helper = 'sudo'
self.device_exists_p = mock.patch(
'neutron.agent.linux.ip_lib.device_exists')
self.device_exists = self.device_exists_p.start()
self.utils_exec_p = mock.patch(
'neutron.agent.linux.utils.execute')
self.utils_exec = self.utils_exec_p.start()
self.utils_replace_file_p = mock.patch(
'neutron.agent.linux.utils.replace_file')
self.utils_replace_file = self.utils_replace_file_p.start()
self.external_process_p = mock.patch(
'neutron.agent.linux.external_process.ProcessManager')
self.external_process = self.external_process_p.start()
self.send_arp_p = mock.patch(
'neutron.agent.l3_agent.L3NATAgent._send_gratuitous_arp_packet')
self.send_arp = self.send_arp_p.start()
self.dvr_cls_p = mock.patch('neutron.agent.linux.interface.NullDriver')
driver_cls = self.dvr_cls_p.start()
self.mock_driver = mock.MagicMock()
self.mock_driver.DEV_NAME_LEN = (
interface.LinuxInterfaceDriver.DEV_NAME_LEN)
driver_cls.return_value = self.mock_driver
self.ip_cls_p = mock.patch('neutron.agent.linux.ip_lib.IPWrapper')
ip_cls = self.ip_cls_p.start()
self.mock_ip = mock.MagicMock()
ip_cls.return_value = self.mock_ip
ip_rule = mock.patch('neutron.agent.linux.ip_lib.IpRule').start()
self.mock_rule = mock.MagicMock()
ip_rule.return_value = self.mock_rule
ip_dev = mock.patch('neutron.agent.linux.ip_lib.IPDevice').start()
self.mock_ip_dev = mock.MagicMock()
ip_dev.return_value = self.mock_ip_dev
self.l3pluginApi_cls_p = mock.patch(
'neutron.agent.l3_agent.L3PluginApi')
l3pluginApi_cls = self.l3pluginApi_cls_p.start()
self.plugin_api = mock.MagicMock()
l3pluginApi_cls.return_value = self.plugin_api
self.looping_call_p = mock.patch(
'neutron.openstack.common.loopingcall.FixedIntervalLoopingCall')
self.looping_call_p.start()
def _prepare_internal_network_data(self):
port_id = _uuid()
router_id = _uuid()
network_id = _uuid()
router = prepare_router_data(num_internal_ports=2)
router_id = router['id']
ri = l3_agent.RouterInfo(router_id, self.conf.root_helper,
self.conf.use_namespaces, router=router)
agent = l3_agent.L3NATAgent(HOSTNAME, self.conf)
cidr = '99.0.1.9/24'
mac = 'ca:fe:de:ad:be:ef'
port = {'network_id': network_id,
'id': port_id, 'ip_cidr': cidr,
'mac_address': mac}
return agent, ri, port
def test__sync_routers_task_raise_exception(self):
agent = l3_agent.L3NATAgent(HOSTNAME, self.conf)
self.plugin_api.get_routers.side_effect = Exception()
with mock.patch.object(agent, '_cleanup_namespaces') as f:
agent._sync_routers_task(agent.context)
self.assertFalse(f.called)
def test__sync_routers_task_call_clean_stale_namespaces(self):
agent = l3_agent.L3NATAgent(HOSTNAME, self.conf)
self.plugin_api.get_routers.return_value = []
with mock.patch.object(agent, '_cleanup_namespaces') as f:
agent._sync_routers_task(agent.context)
self.assertTrue(f.called)
def test_router_info_create(self):
id = _uuid()
ri = l3_agent.RouterInfo(id, self.conf.root_helper,
self.conf.use_namespaces, {})
self.assertTrue(ri.ns_name.endswith(id))
def test_router_info_create_with_router(self):
id = _uuid()
ex_gw_port = {'id': _uuid(),
'network_id': _uuid(),
'fixed_ips': [{'ip_address': '19.4.4.4',
'subnet_id': _uuid()}],
'subnet': {'cidr': '19.4.4.0/24',
'gateway_ip': '19.4.4.1'}}
router = {
'id': _uuid(),
'enable_snat': True,
'routes': [],
'gw_port': ex_gw_port}
ri = l3_agent.RouterInfo(id, self.conf.root_helper,
self.conf.use_namespaces, router)
self.assertTrue(ri.ns_name.endswith(id))
self.assertEqual(ri.router, router)
def test_agent_create(self):
l3_agent.L3NATAgent(HOSTNAME, self.conf)
def _test_internal_network_action(self, action):
agent, ri, port = self._prepare_internal_network_data()
interface_name = agent.get_internal_device_name(port['id'])
if action == 'add':
self.device_exists.return_value = False
agent.internal_network_added(ri, port)
self.assertEqual(self.mock_driver.plug.call_count, 1)
self.assertEqual(self.mock_driver.init_l3.call_count, 1)
self.send_arp.assert_called_once_with(ri.ns_name, interface_name,
'99.0.1.9')
elif action == 'remove':
self.device_exists.return_value = True
agent.internal_network_removed(ri, port)
self.assertEqual(self.mock_driver.unplug.call_count, 1)
else:
raise Exception("Invalid action %s" % action)
def _test_internal_network_action_dist(self, action):
agent, ri, port = self._prepare_internal_network_data()
ri.router['distributed'] = True
ri.router['gw_port_host'] = HOSTNAME
agent.host = HOSTNAME
agent.conf.agent_mode = 'dvr_snat'
sn_port = {'fixed_ips': [{'ip_address': '20.0.0.31',
'subnet_id': _uuid()}],
'subnet': {'gateway_ip': '20.0.0.1'},
'extra_subnets': [{'cidr': '172.16.0.0/24'}],
'id': _uuid(),
'network_id': _uuid(),
'mac_address': 'ca:fe:de:ad:be:ef',
'ip_cidr': '20.0.0.31/24'}
if action == 'add':
self.device_exists.return_value = False
agent._map_internal_interfaces = mock.Mock(return_value=sn_port)
agent._snat_redirect_add = mock.Mock()
agent._set_subnet_info = mock.Mock()
agent._internal_network_added = mock.Mock()
agent.internal_network_added(ri, port)
self.assertEqual(agent._snat_redirect_add.call_count, 1)
self.assertEqual(agent._set_subnet_info.call_count, 1)
self.assertEqual(agent._internal_network_added.call_count, 2)
agent._internal_network_added.assert_called_with(
agent.get_snat_ns_name(ri.router['id']),
sn_port['network_id'],
sn_port['id'],
sn_port['ip_cidr'],
sn_port['mac_address'],
agent.get_snat_int_device_name(sn_port['id']),
l3_agent.SNAT_INT_DEV_PREFIX)
def test_agent_add_internal_network(self):
self._test_internal_network_action('add')
def test_agent_add_internal_network_dist(self):
self._test_internal_network_action_dist('add')
def test_agent_remove_internal_network(self):
self._test_internal_network_action('remove')
def _test_external_gateway_action(self, action):
router = prepare_router_data(num_internal_ports=2)
ri = l3_agent.RouterInfo(router['id'], self.conf.root_helper,
self.conf.use_namespaces, router=router)
agent = l3_agent.L3NATAgent(HOSTNAME, self.conf)
ex_gw_port = {'fixed_ips': [{'ip_address': '20.0.0.30',
'subnet_id': _uuid()}],
'subnet': {'gateway_ip': '20.0.0.1'},
'extra_subnets': [{'cidr': '172.16.0.0/24'}],
'id': _uuid(),
'network_id': _uuid(),
'mac_address': 'ca:fe:de:ad:be:ef',
'ip_cidr': '20.0.0.30/24'}
interface_name = agent.get_external_device_name(ex_gw_port['id'])
if action == 'add':
self.device_exists.return_value = False
fake_fip = {'floatingips': [{'id': _uuid(),
'floating_ip_address': '192.168.1.34',
'fixed_ip_address': '192.168.0.1',
'port_id': _uuid()}]}
router[l3_constants.FLOATINGIP_KEY] = fake_fip['floatingips']
agent.external_gateway_added(ri, ex_gw_port, interface_name)
self.assertEqual(self.mock_driver.plug.call_count, 1)
self.assertEqual(self.mock_driver.init_l3.call_count, 1)
self.send_arp.assert_called_once_with(ri.ns_name, interface_name,
'20.0.0.30')
kwargs = {'preserve_ips': ['192.168.1.34/32'],
'namespace': 'qrouter-' + router['id'],
'gateway': '20.0.0.1',
'extra_subnets': [{'cidr': '172.16.0.0/24'}]}
self.mock_driver.init_l3.assert_called_with(interface_name,
['20.0.0.30/24'],
**kwargs)
elif action == 'remove':
self.device_exists.return_value = True
agent.external_gateway_removed(ri, ex_gw_port, interface_name)
self.assertEqual(self.mock_driver.unplug.call_count, 1)
else:
raise Exception("Invalid action %s" % action)
def _prepare_ext_gw_test(self, agent):
ex_gw_port = {'fixed_ips': [{'ip_address': '20.0.0.30',
'subnet_id': _uuid()}],
'subnet': {'gateway_ip': '20.0.0.1'},
'extra_subnets': [{'cidr': '172.16.0.0/24'}],
'id': _uuid(),
'network_id': _uuid(),
'mac_address': 'ca:fe:de:ad:be:ef',
'ip_cidr': '20.0.0.30/24'}
interface_name = agent.get_external_device_name(ex_gw_port['id'])
self.device_exists.return_value = True
return interface_name, ex_gw_port
def test_external_gateway_updated(self):
router = prepare_router_data(num_internal_ports=2)
ri = l3_agent.RouterInfo(router['id'], self.conf.root_helper,
self.conf.use_namespaces, router=router)
agent = l3_agent.L3NATAgent(HOSTNAME, self.conf)
interface_name, ex_gw_port = self._prepare_ext_gw_test(agent)
fake_fip = {'floatingips': [{'id': _uuid(),
'floating_ip_address': '192.168.1.34',
'fixed_ip_address': '192.168.0.1',
'port_id': _uuid()}]}
router[l3_constants.FLOATINGIP_KEY] = fake_fip['floatingips']
agent.external_gateway_updated(ri, ex_gw_port,
interface_name)
self.assertEqual(self.mock_driver.plug.call_count, 0)
self.assertEqual(self.mock_driver.init_l3.call_count, 1)
self.send_arp.assert_called_once_with(ri.ns_name, interface_name,
'20.0.0.30')
kwargs = {'preserve_ips': ['192.168.1.34/32'],
'namespace': 'qrouter-' + router['id'],
'gateway': '20.0.0.1',
'extra_subnets': [{'cidr': '172.16.0.0/24'}]}
self.mock_driver.init_l3.assert_called_with(interface_name,
['20.0.0.30/24'],
**kwargs)
def _test_ext_gw_updated_dvr_agent_mode(self, host,
agent_mode, expected_call_count):
router = prepare_router_data(num_internal_ports=2)
ri = l3_agent.RouterInfo(router['id'], self.conf.root_helper,
self.conf.use_namespaces, router=router)
agent = l3_agent.L3NATAgent(HOSTNAME, self.conf)
interface_name, ex_gw_port = self._prepare_ext_gw_test(agent)
agent._external_gateway_added = mock.Mock()
# test agent mode = dvr (compute node)
router['distributed'] = True
router['gw_port_host'] = host
agent.conf.agent_mode = agent_mode
agent.external_gateway_updated(ri, ex_gw_port,
interface_name)
# no gateway should be added on dvr node
self.assertEqual(expected_call_count,
agent._external_gateway_added.call_count)
def test_ext_gw_updated_dvr_agent_mode(self):
# no gateway should be added on dvr node
self._test_ext_gw_updated_dvr_agent_mode('any-foo', 'dvr', 0)
def test_ext_gw_updated_dvr_snat_agent_mode_no_host(self):
# no gateway should be added on dvr_snat node without host match
self._test_ext_gw_updated_dvr_agent_mode('any-foo', 'dvr_snat', 0)
def test_ext_gw_updated_dvr_snat_agent_mode_host(self):
# gateway should be added on dvr_snat node
self._test_ext_gw_updated_dvr_agent_mode(self.conf.host,
'dvr_snat', 1)
def test_agent_add_external_gateway(self):
self._test_external_gateway_action('add')
def _test_arping(self, namespace):
if not namespace:
self.conf.set_override('use_namespaces', False)
router_id = _uuid()
ri = l3_agent.RouterInfo(router_id, self.conf.root_helper,
self.conf.use_namespaces, {})
agent = l3_agent.L3NATAgent(HOSTNAME, self.conf)
floating_ip = '20.0.0.101'
interface_name = agent.get_external_device_name(router_id)
agent._arping(ri, interface_name, floating_ip)
arping_cmd = ['arping', '-A',
'-I', interface_name,
'-c', self.conf.send_arp_for_ha,
floating_ip]
self.mock_ip.netns.execute.assert_any_call(
arping_cmd, check_exit_code=True)
def test_arping_namespace(self):
self._test_arping(namespace=True)
def test_arping_no_namespace(self):
self._test_arping(namespace=False)
def test_agent_remove_external_gateway(self):
self._test_external_gateway_action('remove')
def _check_agent_method_called(self, agent, calls, namespace):
self.mock_ip.netns.execute.assert_has_calls(
[mock.call(call, check_exit_code=False) for call in calls],
any_order=True)
def _test_routing_table_update(self, namespace):
if not namespace:
self.conf.set_override('use_namespaces', False)
router_id = _uuid()
ri = l3_agent.RouterInfo(router_id, self.conf.root_helper,
self.conf.use_namespaces,
{})
agent = l3_agent.L3NATAgent(HOSTNAME, self.conf)
fake_route1 = {'destination': '135.207.0.0/16',
'nexthop': '1.2.3.4'}
fake_route2 = {'destination': '135.207.111.111/32',
'nexthop': '1.2.3.4'}
agent._update_routing_table(ri, 'replace', fake_route1)
expected = [['ip', 'route', 'replace', 'to', '135.207.0.0/16',
'via', '1.2.3.4']]
self._check_agent_method_called(agent, expected, namespace)
agent._update_routing_table(ri, 'delete', fake_route1)
expected = [['ip', 'route', 'delete', 'to', '135.207.0.0/16',
'via', '1.2.3.4']]
self._check_agent_method_called(agent, expected, namespace)
agent._update_routing_table(ri, 'replace', fake_route2)
expected = [['ip', 'route', 'replace', 'to', '135.207.111.111/32',
'via', '1.2.3.4']]
self._check_agent_method_called(agent, expected, namespace)
agent._update_routing_table(ri, 'delete', fake_route2)
expected = [['ip', 'route', 'delete', 'to', '135.207.111.111/32',
'via', '1.2.3.4']]
self._check_agent_method_called(agent, expected, namespace)
def test_agent_routing_table_updated(self):
self._test_routing_table_update(namespace=True)
def test_agent_routing_table_updated_no_namespace(self):
self._test_routing_table_update(namespace=False)
def test_routes_updated(self):
self._test_routes_updated(namespace=True)
def test_routes_updated_no_namespace(self):
self._test_routes_updated(namespace=False)
def _test_routes_updated(self, namespace=True):
if not namespace:
self.conf.set_override('use_namespaces', False)
agent = l3_agent.L3NATAgent(HOSTNAME, self.conf)
router_id = _uuid()
ri = l3_agent.RouterInfo(router_id, self.conf.root_helper,
self.conf.use_namespaces,
{})
ri.router = {}
fake_old_routes = []
fake_new_routes = [{'destination': "110.100.31.0/24",
'nexthop': "10.100.10.30"},
{'destination': "110.100.30.0/24",
'nexthop': "10.100.10.30"}]
ri.routes = fake_old_routes
ri.router['routes'] = fake_new_routes
agent.routes_updated(ri)
expected = [['ip', 'route', 'replace', 'to', '110.100.30.0/24',
'via', '10.100.10.30'],
['ip', 'route', 'replace', 'to', '110.100.31.0/24',
'via', '10.100.10.30']]
self._check_agent_method_called(agent, expected, namespace)
fake_new_routes = [{'destination': "110.100.30.0/24",
'nexthop': "10.100.10.30"}]
ri.router['routes'] = fake_new_routes
agent.routes_updated(ri)
expected = [['ip', 'route', 'delete', 'to', '110.100.31.0/24',
'via', '10.100.10.30']]
self._check_agent_method_called(agent, expected, namespace)
fake_new_routes = []
ri.router['routes'] = fake_new_routes
agent.routes_updated(ri)
expected = [['ip', 'route', 'delete', 'to', '110.100.30.0/24',
'via', '10.100.10.30']]
self._check_agent_method_called(agent, expected, namespace)
def _verify_snat_rules(self, rules, router, negate=False):
interfaces = router[l3_constants.INTERFACE_KEY]
source_cidrs = []
for interface in interfaces:
prefix = interface['subnet']['cidr'].split('/')[1]
source_cidr = "%s/%s" % (interface['fixed_ips'][0]['ip_address'],
prefix)
source_cidrs.append(source_cidr)
source_nat_ip = router['gw_port']['fixed_ips'][0]['ip_address']
interface_name = ('qg-%s' % router['gw_port']['id'])[:14]
expected_rules = [
'! -i %s ! -o %s -m conntrack ! --ctstate DNAT -j ACCEPT' %
(interface_name, interface_name)]
for source_cidr in source_cidrs:
# Create SNAT rules for IPv4 only
if (netaddr.IPNetwork(source_cidr).version == 4 and
netaddr.IPNetwork(source_nat_ip).version == 4):
value_dict = {'source_cidr': source_cidr,
'source_nat_ip': source_nat_ip}
expected_rules.append('-s %(source_cidr)s -j SNAT --to-source '
'%(source_nat_ip)s' % value_dict)
for r in rules:
if negate:
self.assertNotIn(r.rule, expected_rules)
else:
self.assertIn(r.rule, expected_rules)
def test__map_internal_interfaces(self):
agent = l3_agent.L3NATAgent(HOSTNAME, self.conf)
router = prepare_router_data(num_internal_ports=4)
ri = l3_agent.RouterInfo(router['id'], self.conf.root_helper,
self.conf.use_namespaces, router=router)
test_port = {
'mac_address': '00:12:23:34:45:56',
'fixed_ips': [{'subnet_id': _get_subnet_id(
router[l3_constants.INTERFACE_KEY][0]),
'ip_address': '101.12.13.14'}]}
internal_ports = ri.router.get(l3_constants.INTERFACE_KEY, [])
# test valid case
res_port = agent._map_internal_interfaces(ri,
internal_ports[0],
[test_port])
self.assertEqual(test_port, res_port)
# test invalid case
test_port['fixed_ips'][0]['subnet_id'] = 1234
res_ip = agent._map_internal_interfaces(ri,
internal_ports[0],
[test_port])
self.assertNotEqual(test_port, res_ip)
self.assertIsNone(res_ip)
def test_get_internal_port(self):
agent = l3_agent.L3NATAgent(HOSTNAME, self.conf)
router = prepare_router_data(num_internal_ports=4)
subnet_ids = [_get_subnet_id(port) for port in
router[l3_constants.INTERFACE_KEY]]
ri = l3_agent.RouterInfo(router['id'], self.conf.root_helper,
self.conf.use_namespaces, router=router)
# Test Basic cases
port = agent.get_internal_port(ri, subnet_ids[0])
fips = port.get('fixed_ips', [])
subnet_id = fips[0]['subnet_id']
self.assertEqual(subnet_ids[0], subnet_id)
port = agent.get_internal_port(ri, subnet_ids[1])
fips = port.get('fixed_ips', [])
subnet_id = fips[0]['subnet_id']
self.assertEqual(subnet_ids[1], subnet_id)
port = agent.get_internal_port(ri, subnet_ids[3])
fips = port.get('fixed_ips', [])
subnet_id = fips[0]['subnet_id']
self.assertEqual(subnet_ids[3], subnet_id)
# Test miss cases
no_port = agent.get_internal_port(ri, FAKE_ID)
self.assertIsNone(no_port)
port = agent.get_internal_port(ri, subnet_ids[0])
fips = port.get('fixed_ips', [])
subnet_id = fips[0]['subnet_id']
self.assertNotEqual(subnet_ids[3], subnet_id)
def test__set_subnet_arp_info(self):
agent = l3_agent.L3NATAgent(HOSTNAME, self.conf)
router = prepare_router_data(num_internal_ports=2)
router['distributed'] = True
ri = l3_agent.RouterInfo(router['id'], self.conf.root_helper,
self.conf.use_namespaces, router=router)
ports = ri.router.get(l3_constants.INTERFACE_KEY, [])
test_ports = [{'mac_address': '00:11:22:33:44:55',
'device_owner': 'network:dhcp',
'subnet_id': _get_subnet_id(ports[0]),
'fixed_ips': [{'ip_address': '1.2.3.4'}]}]
self.plugin_api.get_ports_by_subnet.return_value = test_ports
# Test basic case
ports[0]['subnet']['id'] = _get_subnet_id(ports[0])
agent._set_subnet_arp_info(ri, ports[0])
self.mock_ip_dev.neigh.add.assert_called_once_with(
4, '1.2.3.4', '00:11:22:33:44:55')
# Test negative case
router['distributed'] = False
agent._set_subnet_arp_info(ri, ports[0])
self.mock_ip_dev.neigh.add.never_called()
def test_add_arp_entry(self):
agent = l3_agent.L3NATAgent(HOSTNAME, self.conf)
router = prepare_router_data(num_internal_ports=2)
subnet_id = _get_subnet_id(router[l3_constants.INTERFACE_KEY][0])
arp_table = {'ip_address': '1.7.23.11',
'mac_address': '00:11:22:33:44:55',
'subnet_id': subnet_id}
payload = {'arp_table': arp_table, 'router_id': router['id']}
agent._router_added(router['id'], router)
agent.add_arp_entry(None, payload)
agent.router_deleted(None, router['id'])
self.mock_ip_dev.neigh.add.assert_called_once_with(
4, '1.7.23.11', '00:11:22:33:44:55')
def test_add_arp_entry_no_routerinfo(self):
agent = l3_agent.L3NATAgent(HOSTNAME, self.conf)
router = prepare_router_data(num_internal_ports=2)
subnet_id = _get_subnet_id(router[l3_constants.INTERFACE_KEY][0])
arp_table = {'ip_address': '1.7.23.11',
'mac_address': '00:11:22:33:44:55',
'subnet_id': subnet_id}
payload = {'arp_table': arp_table, 'router_id': router['id']}
agent._update_arp_entry = mock.Mock()
agent.add_arp_entry(None, payload)
self.assertFalse(agent._update_arp_entry.called)
def test__update_arp_entry_with_no_subnet(self):
agent = l3_agent.L3NATAgent(HOSTNAME, self.conf)
ri = l3_agent.RouterInfo(
'foo_router_id', mock.ANY, True,
{'distributed': True, 'gw_port_host': HOSTNAME})
with mock.patch.object(l3_agent.ip_lib, 'IPDevice') as f:
agent._update_arp_entry(ri, mock.ANY, mock.ANY,
'foo_subnet_id', 'add')
self.assertFalse(f.call_count)
def test_del_arp_entry(self):
agent = l3_agent.L3NATAgent(HOSTNAME, self.conf)
router = prepare_router_data(num_internal_ports=2)
subnet_id = _get_subnet_id(router[l3_constants.INTERFACE_KEY][0])
arp_table = {'ip_address': '1.5.25.15',
'mac_address': '00:44:33:22:11:55',
'subnet_id': subnet_id}
payload = {'arp_table': arp_table, 'router_id': router['id']}
agent._router_added(router['id'], router)
# first add the entry
agent.add_arp_entry(None, payload)
# now delete it
agent.del_arp_entry(None, payload)
self.mock_ip_dev.neigh.delete.assert_called_once_with(
4, '1.5.25.15', '00:44:33:22:11:55')
agent.router_deleted(None, router['id'])
def test_process_cent_router(self):
router = prepare_router_data()
ri = l3_agent.RouterInfo(router['id'], self.conf.root_helper,
self.conf.use_namespaces, router=router)
self._test_process_router(ri)
def test_process_dist_router(self):
router = prepare_router_data()
ri = l3_agent.RouterInfo(router['id'], self.conf.root_helper,
self.conf.use_namespaces, router=router)
subnet_id = _get_subnet_id(router[l3_constants.INTERFACE_KEY][0])
ri.router['distributed'] = True
ri.router['_snat_router_interfaces'] = [{
'fixed_ips': [{'subnet_id': subnet_id,
'ip_address': '1.2.3.4'}]}]
ri.router['gw_port_host'] = None
self._test_process_router(ri)
def _test_process_router(self, ri):
router = ri.router
agent = l3_agent.L3NATAgent(HOSTNAME, self.conf)
fake_fip_id = 'fake_fip_id'
agent.process_router_floating_ip_addresses = mock.Mock()
agent.process_router_floating_ip_nat_rules = mock.Mock()
agent.process_router_floating_ip_addresses.return_value = {
fake_fip_id: 'ACTIVE'}
agent.external_gateway_added = mock.Mock()
agent.external_gateway_updated = mock.Mock()
fake_floatingips1 = {'floatingips': [
{'id': fake_fip_id,
'floating_ip_address': '8.8.8.8',
'fixed_ip_address': '7.7.7.7',
'port_id': _uuid()}]}
agent.process_router(ri)
ex_gw_port = agent._get_ex_gw_port(ri)
agent.process_router_floating_ip_addresses.assert_called_with(
ri, ex_gw_port)
agent.process_router_floating_ip_addresses.reset_mock()
agent.process_router_floating_ip_nat_rules.assert_called_with(ri)
agent.process_router_floating_ip_nat_rules.reset_mock()
agent.external_gateway_added.reset_mock()
# remap floating IP to a new fixed ip
fake_floatingips2 = copy.deepcopy(fake_floatingips1)
fake_floatingips2['floatingips'][0]['fixed_ip_address'] = '7.7.7.8'
router[l3_constants.FLOATINGIP_KEY] = fake_floatingips2['floatingips']
agent.process_router(ri)
ex_gw_port = agent._get_ex_gw_port(ri)
agent.process_router_floating_ip_addresses.assert_called_with(
ri, ex_gw_port)
agent.process_router_floating_ip_addresses.reset_mock()
agent.process_router_floating_ip_nat_rules.assert_called_with(ri)
agent.process_router_floating_ip_nat_rules.reset_mock()
self.assertEqual(agent.external_gateway_added.call_count, 0)
self.assertEqual(agent.external_gateway_updated.call_count, 0)
agent.external_gateway_added.reset_mock()
agent.external_gateway_updated.reset_mock()
# change the ex_gw_port a bit to test gateway update
new_gw_port = copy.deepcopy(ri.router['gw_port'])
ri.router['gw_port'] = new_gw_port
old_ip = (netaddr.IPAddress(ri.router['gw_port']
['fixed_ips'][0]['ip_address']))
ri.router['gw_port']['fixed_ips'][0]['ip_address'] = str(old_ip + 1)
agent.process_router(ri)
ex_gw_port = agent._get_ex_gw_port(ri)
agent.process_router_floating_ip_addresses.reset_mock()
agent.process_router_floating_ip_nat_rules.reset_mock()
self.assertEqual(agent.external_gateway_added.call_count, 0)
self.assertEqual(agent.external_gateway_updated.call_count, 1)
# remove just the floating ips
del router[l3_constants.FLOATINGIP_KEY]
agent.process_router(ri)
ex_gw_port = agent._get_ex_gw_port(ri)
agent.process_router_floating_ip_addresses.assert_called_with(
ri, ex_gw_port)
agent.process_router_floating_ip_addresses.reset_mock()
agent.process_router_floating_ip_nat_rules.assert_called_with(ri)
agent.process_router_floating_ip_nat_rules.reset_mock()
# now no ports so state is torn down
del router[l3_constants.INTERFACE_KEY]
del router['gw_port']
agent.process_router(ri)
self.assertEqual(self.send_arp.call_count, 1)
self.assertFalse(agent.process_router_floating_ip_addresses.called)
self.assertFalse(agent.process_router_floating_ip_nat_rules.called)
@mock.patch('neutron.agent.linux.ip_lib.IPDevice')
def _test_process_router_floating_ip_addresses_add(self, ri,
agent, IPDevice):
floating_ips = ri.router.get(l3_constants.FLOATINGIP_KEY, [])
fip_id = floating_ips[0]['id']
IPDevice.return_value = device = mock.Mock()
device.addr.list.return_value = []
ri.iptables_manager.ipv4['nat'] = mock.MagicMock()
with mock.patch.object(l3_agent.LinkLocalAllocator, '_write'):
fip_statuses = agent.process_router_floating_ip_addresses(
ri, {'id': _uuid()})
self.assertEqual({fip_id: l3_constants.FLOATINGIP_STATUS_ACTIVE},
fip_statuses)
device.addr.add.assert_called_once_with(4, '15.1.2.3/32', '15.1.2.3')
def test_process_router_floating_ip_nat_rules_add(self):
fip = {
'id': _uuid(), 'port_id': _uuid(),
'floating_ip_address': '15.1.2.3',
'fixed_ip_address': '192.168.0.1'
}
ri = mock.MagicMock()
ri.router.get.return_value = [fip]
ri.router['distributed'].__nonzero__ = lambda self: False
agent = l3_agent.L3NATAgent(HOSTNAME, self.conf)
agent.process_router_floating_ip_nat_rules(ri)
nat = ri.iptables_manager.ipv4['nat']
nat.clear_rules_by_tag.assert_called_once_with('floating_ip')
rules = agent.floating_forward_rules('15.1.2.3', '192.168.0.1')
for chain, rule in rules:
nat.add_rule.assert_any_call(chain, rule, tag='floating_ip')
def test_process_router_cent_floating_ip_add(self):
fake_floatingips = {'floatingips': [
{'id': _uuid(),
'floating_ip_address': '15.1.2.3',
'fixed_ip_address': '192.168.0.1',
'port_id': _uuid()}]}
router = prepare_router_data(enable_snat=True)
router[l3_constants.FLOATINGIP_KEY] = fake_floatingips['floatingips']
ri = l3_agent.RouterInfo(router['id'], self.conf.root_helper,
self.conf.use_namespaces, router=router)
ri.iptables_manager.ipv4['nat'] = mock.MagicMock()
agent = l3_agent.L3NATAgent(HOSTNAME, self.conf)
self._test_process_router_floating_ip_addresses_add(ri, agent)
def test_process_router_dist_floating_ip_add(self):
fake_floatingips = {'floatingips': [
{'id': _uuid(),
'host': HOSTNAME,
'floating_ip_address': '15.1.2.3',
'fixed_ip_address': '192.168.0.1',
'floating_network_id': _uuid(),
'port_id': _uuid()}]}
router = prepare_router_data(enable_snat=True)
router[l3_constants.FLOATINGIP_KEY] = fake_floatingips['floatingips']
router['distributed'] = True
ri = l3_agent.RouterInfo(router['id'], self.conf.root_helper,
self.conf.use_namespaces, router=router)
ri.iptables_manager.ipv4['nat'] = mock.MagicMock()
agent = l3_agent.L3NATAgent(HOSTNAME, self.conf)
agent.host = HOSTNAME
agent.agent_gateway_port = (
{'fixed_ips': [{'ip_address': '20.0.0.30',
'subnet_id': _uuid()}],
'subnet': {'gateway_ip': '20.0.0.1'},
'id': _uuid(),
'network_id': _uuid(),
'mac_address': 'ca:fe:de:ad:be:ef',
'ip_cidr': '20.0.0.30/24'}
)
self._test_process_router_floating_ip_addresses_add(ri, agent)
# TODO(mrsmith): refactor for DVR cases
@mock.patch('neutron.agent.linux.ip_lib.IPDevice')
def test_process_router_floating_ip_addresses_remove(self, IPDevice):
IPDevice.return_value = device = mock.Mock()
device.addr.list.return_value = [{'cidr': '15.1.2.3/32'}]
ri = mock.MagicMock()
ri.router.get.return_value = []
ri.router['distributed'].__nonzero__ = lambda self: False
agent = l3_agent.L3NATAgent(HOSTNAME, self.conf)
fip_statuses = agent.process_router_floating_ip_addresses(
ri, {'id': _uuid()})
self.assertEqual({}, fip_statuses)
device.addr.delete.assert_called_once_with(4, '15.1.2.3/32')
def test_process_router_floating_ip_nat_rules_remove(self):
ri = mock.MagicMock()
ri.router.get.return_value = []
agent = l3_agent.L3NATAgent(HOSTNAME, self.conf)
agent.process_router_floating_ip_nat_rules(ri)
nat = ri.iptables_manager.ipv4['nat']
nat = ri.iptables_manager.ipv4['nat`']
nat.clear_rules_by_tag.assert_called_once_with('floating_ip')
@mock.patch('neutron.agent.linux.ip_lib.IPDevice')
def test_process_router_floating_ip_addresses_remap(self, IPDevice):
fip_id = _uuid()
fip = {
'id': fip_id, 'port_id': _uuid(),
'floating_ip_address': '15.1.2.3',
'fixed_ip_address': '192.168.0.2'
}
IPDevice.return_value = device = mock.Mock()
device.addr.list.return_value = [{'cidr': '15.1.2.3/32'}]
ri = mock.MagicMock()
ri.router['distributed'].__nonzero__ = lambda self: False
ri.router.get.return_value = [fip]
agent = l3_agent.L3NATAgent(HOSTNAME, self.conf)
fip_statuses = agent.process_router_floating_ip_addresses(
ri, {'id': _uuid()})
self.assertEqual({fip_id: l3_constants.FLOATINGIP_STATUS_ACTIVE},
fip_statuses)
self.assertFalse(device.addr.add.called)
self.assertFalse(device.addr.delete.called)
@mock.patch('neutron.agent.linux.ip_lib.IPDevice')
def test_process_router_with_disabled_floating_ip(self, IPDevice):
fip_id = _uuid()
fip = {
'id': fip_id, 'port_id': _uuid(),
'floating_ip_address': '15.1.2.3',
'fixed_ip_address': '192.168.0.2'
}
ri = mock.MagicMock()
ri.floating_ips = [fip]
ri.router.get.return_value = []
agent = l3_agent.L3NATAgent(HOSTNAME, self.conf)
fip_statuses = agent.process_router_floating_ip_addresses(
ri, {'id': _uuid()})
self.assertIsNone(fip_statuses.get(fip_id))
@mock.patch('neutron.agent.linux.ip_lib.IPDevice')
def test_process_router_floating_ip_with_device_add_error(self, IPDevice):
IPDevice.return_value = device = mock.Mock()
device.addr.add.side_effect = processutils.ProcessExecutionError
device.addr.list.return_value = []
fip_id = _uuid()
fip = {
'id': fip_id, 'port_id': _uuid(),
'floating_ip_address': '15.1.2.3',
'fixed_ip_address': '192.168.0.2'
}
ri = mock.MagicMock()
ri.router.get.return_value = [fip]
ri.router['distributed'].__nonzero__ = lambda self: False
agent = l3_agent.L3NATAgent(HOSTNAME, self.conf)
fip_statuses = agent.process_router_floating_ip_addresses(
ri, {'id': _uuid()})
self.assertEqual({fip_id: l3_constants.FLOATINGIP_STATUS_ERROR},
fip_statuses)
def test_process_router_snat_disabled(self):
agent = l3_agent.L3NATAgent(HOSTNAME, self.conf)
router = prepare_router_data(enable_snat=True)
ri = l3_agent.RouterInfo(router['id'], self.conf.root_helper,
self.conf.use_namespaces, router=router)
agent.external_gateway_added = mock.Mock()
# Process with NAT
agent.process_router(ri)
orig_nat_rules = ri.iptables_manager.ipv4['nat'].rules[:]
# Reprocess without NAT
router['enable_snat'] = False
# Reassign the router object to RouterInfo
ri.router = router
agent.process_router(ri)
# For some reason set logic does not work well with
# IpTablesRule instances
nat_rules_delta = [r for r in orig_nat_rules
if r not in ri.iptables_manager.ipv4['nat'].rules]
self.assertEqual(len(nat_rules_delta), 2)
self._verify_snat_rules(nat_rules_delta, router)
self.assertEqual(self.send_arp.call_count, 1)
def test_process_router_snat_enabled(self):
agent = l3_agent.L3NATAgent(HOSTNAME, self.conf)
router = prepare_router_data(enable_snat=False)
ri = l3_agent.RouterInfo(router['id'], self.conf.root_helper,
self.conf.use_namespaces, router=router)
agent.external_gateway_added = mock.Mock()
# Process without NAT
agent.process_router(ri)
orig_nat_rules = ri.iptables_manager.ipv4['nat'].rules[:]
# Reprocess with NAT
router['enable_snat'] = True
# Reassign the router object to RouterInfo
ri.router = router
agent.process_router(ri)
# For some reason set logic does not work well with
# IpTablesRule instances
nat_rules_delta = [r for r in ri.iptables_manager.ipv4['nat'].rules
if r not in orig_nat_rules]
self.assertEqual(len(nat_rules_delta), 2)
self._verify_snat_rules(nat_rules_delta, router)
self.assertEqual(self.send_arp.call_count, 1)
def test_process_router_interface_added(self):
agent = l3_agent.L3NATAgent(HOSTNAME, self.conf)
router = prepare_router_data()
ri = l3_agent.RouterInfo(router['id'], self.conf.root_helper,
self.conf.use_namespaces, router=router)
agent.external_gateway_added = mock.Mock()
# Process with NAT
agent.process_router(ri)
orig_nat_rules = ri.iptables_manager.ipv4['nat'].rules[:]
# Add an interface and reprocess
router_append_interface(router)
# Reassign the router object to RouterInfo
ri.router = router
agent.process_router(ri)
# For some reason set logic does not work well with
# IpTablesRule instances
nat_rules_delta = [r for r in ri.iptables_manager.ipv4['nat'].rules
if r not in orig_nat_rules]
self.assertEqual(len(nat_rules_delta), 1)
self._verify_snat_rules(nat_rules_delta, router)
# send_arp is called both times process_router is called
self.assertEqual(self.send_arp.call_count, 2)
def test_process_ipv6_only_gw(self):
agent = l3_agent.L3NATAgent(HOSTNAME, self.conf)
router = prepare_router_data(ip_version=6)
# Get NAT rules without the gw_port
gw_port = router['gw_port']
router['gw_port'] = None
ri = l3_agent.RouterInfo(router['id'], self.conf.root_helper,
self.conf.use_namespaces, router=router)
agent.external_gateway_added = mock.Mock()
agent.process_router(ri)
orig_nat_rules = ri.iptables_manager.ipv4['nat'].rules[:]
# Get NAT rules with the gw_port
router['gw_port'] = gw_port
ri = l3_agent.RouterInfo(router['id'], self.conf.root_helper,
self.conf.use_namespaces, router=router)
with mock.patch.object(
agent,
'external_gateway_nat_rules') as external_gateway_nat_rules:
agent.process_router(ri)
new_nat_rules = ri.iptables_manager.ipv4['nat'].rules[:]
# There should be no change with the NAT rules
self.assertFalse(external_gateway_nat_rules.called)
self.assertEqual(orig_nat_rules, new_nat_rules)
def _process_router_ipv6_interface_added(
self, router, ra_mode=None, addr_mode=None):
agent = l3_agent.L3NATAgent(HOSTNAME, self.conf)
ri = l3_agent.RouterInfo(router['id'], self.conf.root_helper,
self.conf.use_namespaces, router=router)
agent.external_gateway_added = mock.Mock()
# Process with NAT
agent.process_router(ri)
orig_nat_rules = ri.iptables_manager.ipv4['nat'].rules[:]
# Add an IPv6 interface and reprocess
router_append_interface(router, count=1, ip_version=6, ra_mode=ra_mode,
addr_mode=addr_mode)
# Reassign the router object to RouterInfo
ri.router = router
agent.process_router(ri)
# IPv4 NAT rules should not be changed by adding an IPv6 interface
nat_rules_delta = [r for r in ri.iptables_manager.ipv4['nat'].rules
if r not in orig_nat_rules]
self.assertFalse(nat_rules_delta)
return ri
def _expected_call_lookup_ri_process(self, ri, process):
"""Expected call if a process is looked up in a router instance."""
return [mock.call(cfg.CONF,
ri.router['id'],
self.conf.root_helper,
ri.ns_name,
process)]
def _assert_ri_process_enabled(self, ri, process):
"""Verify that process was enabled for a router instance."""
expected_calls = self._expected_call_lookup_ri_process(ri, process)
expected_calls.append(mock.call().enable(mock.ANY, True))
self.assertEqual(expected_calls, self.external_process.mock_calls)
def _assert_ri_process_disabled(self, ri, process):
"""Verify that process was disabled for a router instance."""
expected_calls = self._expected_call_lookup_ri_process(ri, process)
expected_calls.append(mock.call().disable())
self.assertEqual(expected_calls, self.external_process.mock_calls)
def test_process_router_ipv6_interface_added(self):
router = prepare_router_data()
ri = self._process_router_ipv6_interface_added(router)
self._assert_ri_process_enabled(ri, 'radvd')
# Expect radvd configured without prefix
self.assertNotIn('prefix',
self.utils_replace_file.call_args[0][1].split())
def test_process_router_ipv6_slaac_interface_added(self):
router = prepare_router_data()
ri = self._process_router_ipv6_interface_added(
router, ra_mode=l3_constants.IPV6_SLAAC)
self._assert_ri_process_enabled(ri, 'radvd')
# Expect radvd configured with prefix
self.assertIn('prefix',
self.utils_replace_file.call_args[0][1].split())
def test_process_router_ipv6v4_interface_added(self):
agent = l3_agent.L3NATAgent(HOSTNAME, self.conf)
router = prepare_router_data()
ri = l3_agent.RouterInfo(router['id'], self.conf.root_helper,
self.conf.use_namespaces, router=router)
agent.external_gateway_added = mock.Mock()
# Process with NAT
agent.process_router(ri)
orig_nat_rules = ri.iptables_manager.ipv4['nat'].rules[:]
# Add an IPv4 and IPv6 interface and reprocess
router_append_interface(router, count=1, ip_version=4)
router_append_interface(router, count=1, ip_version=6)
# Reassign the router object to RouterInfo
ri.router = router
agent.process_router(ri)
self._assert_ri_process_enabled(ri, 'radvd')
# For some reason set logic does not work well with
# IpTablesRule instances
nat_rules_delta = [r for r in ri.iptables_manager.ipv4['nat'].rules
if r not in orig_nat_rules]
self.assertEqual(1, len(nat_rules_delta))
self._verify_snat_rules(nat_rules_delta, router)
def test_process_router_interface_removed(self):
agent = l3_agent.L3NATAgent(HOSTNAME, self.conf)
router = prepare_router_data(num_internal_ports=2)
ri = l3_agent.RouterInfo(router['id'], self.conf.root_helper,
self.conf.use_namespaces, router=router)
agent.external_gateway_added = mock.Mock()
# Process with NAT
agent.process_router(ri)
orig_nat_rules = ri.iptables_manager.ipv4['nat'].rules[:]
# Add an interface and reprocess
del router[l3_constants.INTERFACE_KEY][1]
# Reassign the router object to RouterInfo
ri.router = router
agent.process_router(ri)
# For some reason set logic does not work well with
# IpTablesRule instances
nat_rules_delta = [r for r in orig_nat_rules
if r not in ri.iptables_manager.ipv4['nat'].rules]
self.assertEqual(len(nat_rules_delta), 1)
self._verify_snat_rules(nat_rules_delta, router, negate=True)
# send_arp is called both times process_router is called
self.assertEqual(self.send_arp.call_count, 2)
def test_process_router_ipv6_interface_removed(self):
agent = l3_agent.L3NATAgent(HOSTNAME, self.conf)
router = prepare_router_data()
ri = l3_agent.RouterInfo(router['id'], self.conf.root_helper,
self.conf.use_namespaces, router=router)
agent.external_gateway_added = mock.Mock()
ri.router = router
agent.process_router(ri)
# Add an IPv6 interface and reprocess
router_append_interface(router, count=1, ip_version=6)
agent.process_router(ri)
self._assert_ri_process_enabled(ri, 'radvd')
# Reset the calls so we can check for disable radvd
self.external_process.reset_mock()
# Remove the IPv6 interface and reprocess
del router[l3_constants.INTERFACE_KEY][1]
agent.process_router(ri)
self._assert_ri_process_disabled(ri, 'radvd')
def test_process_router_internal_network_added_unexpected_error(self):
agent = l3_agent.L3NATAgent(HOSTNAME, self.conf)
router = prepare_router_data()
ri = l3_agent.RouterInfo(router['id'], self.conf.root_helper,
self.conf.use_namespaces, router=router)
agent.external_gateway_added = mock.Mock()
with mock.patch.object(
l3_agent.L3NATAgent,
'internal_network_added') as internal_network_added:
# raise RuntimeError to simulate that an unexpected exception
# occurs
internal_network_added.side_effect = RuntimeError
self.assertRaises(RuntimeError, agent.process_router, ri)
self.assertNotIn(
router[l3_constants.INTERFACE_KEY][0], ri.internal_ports)
# The unexpected exception has been fixed manually
internal_network_added.side_effect = None
# _sync_routers_task finds out that _rpc_loop failed to process the
# router last time, it will retry in the next run.
agent.process_router(ri)
# We were able to add the port to ri.internal_ports
self.assertIn(
router[l3_constants.INTERFACE_KEY][0], ri.internal_ports)
def test_process_router_internal_network_removed_unexpected_error(self):
agent = l3_agent.L3NATAgent(HOSTNAME, self.conf)
router = prepare_router_data()
ri = l3_agent.RouterInfo(router['id'], self.conf.root_helper,
self.conf.use_namespaces, router=router)
agent.external_gateway_added = mock.Mock()
# add an internal port
agent.process_router(ri)
with mock.patch.object(
l3_agent.L3NATAgent,
'internal_network_removed') as internal_net_removed:
# raise RuntimeError to simulate that an unexpected exception
# occurs
internal_net_removed.side_effect = RuntimeError
ri.internal_ports[0]['admin_state_up'] = False
# The above port is set to down state, remove it.
self.assertRaises(RuntimeError, agent.process_router, ri)
self.assertIn(
router[l3_constants.INTERFACE_KEY][0], ri.internal_ports)
# The unexpected exception has been fixed manually
internal_net_removed.side_effect = None
# _sync_routers_task finds out that _rpc_loop failed to process the
# router last time, it will retry in the next run.
agent.process_router(ri)
# We were able to remove the port from ri.internal_ports
self.assertNotIn(
router[l3_constants.INTERFACE_KEY][0], ri.internal_ports)
def test_process_router_floatingip_disabled(self):
agent = l3_agent.L3NATAgent(HOSTNAME, self.conf)
with mock.patch.object(
agent.plugin_rpc,
'update_floatingip_statuses') as mock_update_fip_status:
fip_id = _uuid()
router = prepare_router_data(num_internal_ports=1)
router[l3_constants.FLOATINGIP_KEY] = [
{'id': fip_id,
'floating_ip_address': '8.8.8.8',
'fixed_ip_address': '7.7.7.7',
'port_id': router[l3_constants.INTERFACE_KEY][0]['id']}]
ri = l3_agent.RouterInfo(router['id'], self.conf.root_helper,
self.conf.use_namespaces, router=router)
agent.external_gateway_added = mock.Mock()
agent.process_router(ri)
# Assess the call for putting the floating IP up was performed
mock_update_fip_status.assert_called_once_with(
mock.ANY, ri.router_id,
{fip_id: l3_constants.FLOATINGIP_STATUS_ACTIVE})
mock_update_fip_status.reset_mock()
# Process the router again, this time without floating IPs
router[l3_constants.FLOATINGIP_KEY] = []
ri.router = router
agent.process_router(ri)
# Assess the call for putting the floating IP up was performed
mock_update_fip_status.assert_called_once_with(
mock.ANY, ri.router_id,
{fip_id: l3_constants.FLOATINGIP_STATUS_DOWN})
def test_process_router_floatingip_exception(self):
agent = l3_agent.L3NATAgent(HOSTNAME, self.conf)
agent.process_router_floating_ip_addresses = mock.Mock()
agent.process_router_floating_ip_addresses.side_effect = RuntimeError
with mock.patch.object(
agent.plugin_rpc,
'update_floatingip_statuses') as mock_update_fip_status:
fip_id = _uuid()
router = prepare_router_data(num_internal_ports=1)
router[l3_constants.FLOATINGIP_KEY] = [
{'id': fip_id,
'floating_ip_address': '8.8.8.8',
'fixed_ip_address': '7.7.7.7',
'port_id': router[l3_constants.INTERFACE_KEY][0]['id']}]
ri = l3_agent.RouterInfo(router['id'], self.conf.root_helper,
self.conf.use_namespaces, router=router)
agent.external_gateway_added = mock.Mock()
agent.process_router(ri)
# Assess the call for putting the floating IP into Error
# was performed
mock_update_fip_status.assert_called_once_with(
mock.ANY, ri.router_id,
{fip_id: l3_constants.FLOATINGIP_STATUS_ERROR})
def test_handle_router_snat_rules_distributed_without_snat_manager(self):
ri = l3_agent.RouterInfo(
'foo_router_id', mock.ANY, True, {'distributed': True})
ri.iptables_manager = mock.Mock()
agent = l3_agent.L3NATAgent(HOSTNAME, self.conf)
with mock.patch.object(l3_agent.LOG, 'debug') as log_debug:
agent._handle_router_snat_rules(
ri, mock.ANY, mock.ANY, mock.ANY, mock.ANY)
self.assertIsNone(ri.snat_iptables_manager)
self.assertFalse(ri.iptables_manager.called)
self.assertTrue(log_debug.called)
def test_handle_router_snat_rules_add_back_jump(self):
agent = l3_agent.L3NATAgent(HOSTNAME, self.conf)
ri = mock.MagicMock()
port = {'fixed_ips': [{'ip_address': '192.168.1.4'}]}
ri.router = {'distributed': False}
agent._handle_router_snat_rules(ri, port, [], "iface", "add_rules")
nat = ri.iptables_manager.ipv4['nat']
nat.empty_chain.assert_any_call('snat')
nat.add_rule.assert_any_call('snat', '-j $float-snat')
for call in nat.mock_calls:
name, args, kwargs = call
if name == 'add_rule':
self.assertEqual(args, ('snat', '-j $float-snat'))
self.assertEqual(kwargs, {})
break
def test_handle_router_snat_rules_add_rules(self):
agent = l3_agent.L3NATAgent(HOSTNAME, self.conf)
ri = l3_agent.RouterInfo(_uuid(), self.conf.root_helper,
self.conf.use_namespaces, {})
ex_gw_port = {'fixed_ips': [{'ip_address': '192.168.1.4'}]}
internal_cidrs = ['10.0.0.0/24']
ri.router = {'distributed': False}
agent._handle_router_snat_rules(ri, ex_gw_port, internal_cidrs,
"iface", "add_rules")
nat_rules = map(str, ri.iptables_manager.ipv4['nat'].rules)
wrap_name = ri.iptables_manager.wrap_name
jump_float_rule = "-A %s-snat -j %s-float-snat" % (wrap_name,
wrap_name)
internal_net_rule = ("-A %s-snat -s %s -j SNAT --to-source %s") % (
wrap_name, internal_cidrs[0],
ex_gw_port['fixed_ips'][0]['ip_address'])
self.assertIn(jump_float_rule, nat_rules)
self.assertIn(internal_net_rule, nat_rules)
self.assertThat(nat_rules.index(jump_float_rule),
matchers.LessThan(nat_rules.index(internal_net_rule)))
def test_process_router_delete_stale_internal_devices(self):
class FakeDev(object):
def __init__(self, name):
self.name = name
agent = l3_agent.L3NATAgent(HOSTNAME, self.conf)
stale_devlist = [FakeDev('qr-a1b2c3d4-e5'),
FakeDev('qr-b2c3d4e5-f6')]
stale_devnames = [dev.name for dev in stale_devlist]
get_devices_return = []
get_devices_return.extend(stale_devlist)
self.mock_ip.get_devices.return_value = get_devices_return
router = prepare_router_data(enable_snat=True, num_internal_ports=1)
ri = l3_agent.RouterInfo(router['id'],
self.conf.root_helper,
self.conf.use_namespaces,
router=router)
internal_ports = ri.router.get(l3_constants.INTERFACE_KEY, [])
self.assertEqual(len(internal_ports), 1)
internal_port = internal_ports[0]
with contextlib.nested(mock.patch.object(l3_agent.L3NATAgent,
'internal_network_removed'),
mock.patch.object(l3_agent.L3NATAgent,
'internal_network_added'),
mock.patch.object(l3_agent.L3NATAgent,
'external_gateway_removed'),
mock.patch.object(l3_agent.L3NATAgent,
'external_gateway_added')
) as (internal_network_removed,
internal_network_added,
external_gateway_removed,
external_gateway_added):
agent.process_router(ri)
self.assertEqual(external_gateway_added.call_count, 1)
self.assertFalse(external_gateway_removed.called)
self.assertFalse(internal_network_removed.called)
internal_network_added.assert_called_once_with(
ri, internal_port)
self.assertEqual(self.mock_driver.unplug.call_count,
len(stale_devnames))
calls = [mock.call(stale_devname,
namespace=ri.ns_name,
prefix=l3_agent.INTERNAL_DEV_PREFIX)
for stale_devname in stale_devnames]
self.mock_driver.unplug.assert_has_calls(calls, any_order=True)
def test_process_router_delete_stale_external_devices(self):
class FakeDev(object):
def __init__(self, name):
self.name = name
agent = l3_agent.L3NATAgent(HOSTNAME, self.conf)
stale_devlist = [FakeDev('qg-a1b2c3d4-e5')]
stale_devnames = [dev.name for dev in stale_devlist]
router = prepare_router_data(enable_snat=True, num_internal_ports=1)
del router['gw_port']
ri = l3_agent.RouterInfo(router['id'],
self.conf.root_helper,
self.conf.use_namespaces,
router=router)
self.mock_ip.get_devices.return_value = stale_devlist
agent.process_router(ri)
self.mock_driver.unplug.assert_called_with(
stale_devnames[0],
bridge="br-ex",
namespace=ri.ns_name,
prefix=l3_agent.EXTERNAL_DEV_PREFIX)
def test_router_deleted(self):
agent = l3_agent.L3NATAgent(HOSTNAME, self.conf)
agent._queue = mock.Mock()
agent.router_deleted(None, FAKE_ID)
agent._queue.add.assert_called_once()
def test_routers_updated(self):
agent = l3_agent.L3NATAgent(HOSTNAME, self.conf)
agent._queue = mock.Mock()
agent.routers_updated(None, [FAKE_ID])
agent._queue.add.assert_called_once()
def test_removed_from_agent(self):
agent = l3_agent.L3NATAgent(HOSTNAME, self.conf)
agent._queue = mock.Mock()
agent.router_removed_from_agent(None, {'router_id': FAKE_ID})
agent._queue.add.assert_called_once()
def test_added_to_agent(self):
agent = l3_agent.L3NATAgent(HOSTNAME, self.conf)
agent._queue = mock.Mock()
agent.router_added_to_agent(None, [FAKE_ID])
agent._queue.add.assert_called_once()
def test_process_router_delete(self):
agent = l3_agent.L3NATAgent(HOSTNAME, self.conf)
ex_gw_port = {'id': _uuid(),
'network_id': _uuid(),
'fixed_ips': [{'ip_address': '19.4.4.4',
'subnet_id': _uuid()}],
'subnet': {'cidr': '19.4.4.0/24',
'gateway_ip': '19.4.4.1'}}
router = {
'id': _uuid(),
'enable_snat': True,
'routes': [],
'gw_port': ex_gw_port}
router['distributed'] = False
agent._router_added(router['id'], router)
agent.router_deleted(None, router['id'])
agent._process_router_delete()
self.assertFalse(list(agent.removed_routers))
def test_destroy_fip_namespace(self):
class FakeDev(object):
def __init__(self, name):
self.name = name
namespaces = ['qrouter-foo', 'qrouter-bar']
self.mock_ip.get_namespaces.return_value = namespaces
self.mock_ip.get_devices.return_value = [FakeDev('fpr-aaaa'),
FakeDev('fg-aaaa')]
agent = l3_agent.L3NATAgent(HOSTNAME, self.conf)
agent._destroy_fip_namespace(namespaces[0])
self.mock_driver.unplug.assert_called_once_with('fg-aaaa',
bridge='br-ex',
prefix='fg-',
namespace='qrouter'
'-foo')
self.mock_ip.del_veth.assert_called_once_with('fpr-aaaa')
def test_destroy_namespace(self):
class FakeDev(object):
def __init__(self, name):
self.name = name
namespace = 'qrouter-bar'
self.mock_ip.get_namespaces.return_value = [namespace]
self.mock_ip.get_devices.return_value = [FakeDev('qr-aaaa'),
FakeDev('rfp-aaaa')]
agent = l3_agent.L3NATAgent(HOSTNAME, self.conf)
agent._destroy_namespace(namespace)
self.mock_driver.unplug.assert_called_once_with('qr-aaaa',
prefix='qr-',
namespace='qrouter'
'-bar')
self.mock_ip.del_veth.assert_called_once_with('rfp-aaaa')
def test_destroy_router_namespace_skips_ns_removal(self):
agent = l3_agent.L3NATAgent(HOSTNAME, self.conf)
agent._destroy_router_namespace("fakens")
self.assertEqual(self.mock_ip.netns.delete.call_count, 0)
def test_destroy_router_namespace_removes_ns(self):
self.conf.set_override('router_delete_namespaces', True)
agent = l3_agent.L3NATAgent(HOSTNAME, self.conf)
agent._destroy_router_namespace("fakens")
self.mock_ip.netns.delete.assert_called_once_with("fakens")
def _configure_metadata_proxy(self, enableflag=True):
if not enableflag:
self.conf.set_override('enable_metadata_proxy', False)
agent = l3_agent.L3NATAgent(HOSTNAME, self.conf)
router_id = _uuid()
router = {'id': _uuid(),
'external_gateway_info': {},
'routes': [],
'distributed': False}
with mock.patch.object(
agent, '_destroy_metadata_proxy') as destroy_proxy:
with mock.patch.object(
agent, '_spawn_metadata_proxy') as spawn_proxy:
agent._router_added(router_id, router)
if enableflag:
spawn_proxy.assert_called_with(mock.ANY, mock.ANY)
else:
self.assertFalse(spawn_proxy.call_count)
agent._router_removed(router_id)
if enableflag:
destroy_proxy.assert_called_with(mock.ANY, mock.ANY)
else:
self.assertFalse(destroy_proxy.call_count)
def test_enable_metadata_proxy(self):
self._configure_metadata_proxy()
def test_disable_metadata_proxy_spawn(self):
self._configure_metadata_proxy(enableflag=False)
def test_metadata_nat_rules(self):
self.conf.set_override('enable_metadata_proxy', False)
agent = l3_agent.L3NATAgent(HOSTNAME, self.conf)
self.assertEqual([], agent.metadata_nat_rules())
self.conf.set_override('metadata_port', '8775')
self.conf.set_override('enable_metadata_proxy', True)
agent = l3_agent.L3NATAgent(HOSTNAME, self.conf)
rules = ('PREROUTING', '-s 0.0.0.0/0 -d 169.254.169.254/32 '
'-p tcp -m tcp --dport 80 -j REDIRECT --to-port 8775')
self.assertEqual([rules], agent.metadata_nat_rules())
def test_router_id_specified_in_conf(self):
self.conf.set_override('use_namespaces', False)
self.conf.set_override('router_id', '')
self.assertRaises(SystemExit, l3_agent.L3NATAgent,
HOSTNAME, self.conf)
self.conf.set_override('router_id', '1234')
agent = l3_agent.L3NATAgent(HOSTNAME, self.conf)
self.assertEqual(['1234'], agent._router_ids())
self.assertFalse(agent._clean_stale_namespaces)
def test_process_routers_with_no_ext_net_in_conf(self):
agent = l3_agent.L3NATAgent(HOSTNAME, self.conf)
self.plugin_api.get_external_network_id.return_value = 'aaa'
routers = [
{'id': _uuid(),
'routes': [],
'admin_state_up': True,
'external_gateway_info': {'network_id': 'aaa'}}]
agent._process_routers(routers)
self.assertIn(routers[0]['id'], agent.router_info)
self.plugin_api.get_external_network_id.assert_called_with(
agent.context)
def test_process_routers_with_cached_ext_net(self):
agent = l3_agent.L3NATAgent(HOSTNAME, self.conf)
self.plugin_api.get_external_network_id.return_value = 'aaa'
agent.target_ex_net_id = 'aaa'
routers = [
{'id': _uuid(),
'routes': [],
'admin_state_up': True,
'external_gateway_info': {'network_id': 'aaa'}}]
agent._process_routers(routers)
self.assertIn(routers[0]['id'], agent.router_info)
self.assertFalse(self.plugin_api.get_external_network_id.called)
def test_process_routers_with_stale_cached_ext_net(self):
agent = l3_agent.L3NATAgent(HOSTNAME, self.conf)
self.plugin_api.get_external_network_id.return_value = 'aaa'
agent.target_ex_net_id = 'bbb'
routers = [
{'id': _uuid(),
'routes': [],
'admin_state_up': True,
'external_gateway_info': {'network_id': 'aaa'}}]
agent._process_routers(routers)
self.assertIn(routers[0]['id'], agent.router_info)
self.plugin_api.get_external_network_id.assert_called_with(
agent.context)
def test_process_routers_with_no_ext_net_in_conf_and_two_net_plugin(self):
agent = l3_agent.L3NATAgent(HOSTNAME, self.conf)
routers = [
{'id': _uuid(),
'routes': [],
'admin_state_up': True,
'external_gateway_info': {'network_id': 'aaa'}}]
agent.router_info = {}
self.plugin_api.get_external_network_id.side_effect = (
n_exc.TooManyExternalNetworks())
self.assertRaises(n_exc.TooManyExternalNetworks,
agent._process_routers,
routers)
self.assertNotIn(routers[0]['id'], agent.router_info)
def test_process_routers_with_ext_net_in_conf(self):
agent = l3_agent.L3NATAgent(HOSTNAME, self.conf)
self.plugin_api.get_external_network_id.return_value = 'aaa'
routers = [
{'id': _uuid(),
'routes': [],
'admin_state_up': True,
'external_gateway_info': {'network_id': 'aaa'}},
{'id': _uuid(),
'routes': [],
'admin_state_up': True,
'external_gateway_info': {'network_id': 'bbb'}}]
agent.router_info = {}
self.conf.set_override('gateway_external_network_id', 'aaa')
agent._process_routers(routers)
self.assertIn(routers[0]['id'], agent.router_info)
self.assertNotIn(routers[1]['id'], agent.router_info)
def test_process_routers_with_no_bridge_no_ext_net_in_conf(self):
agent = l3_agent.L3NATAgent(HOSTNAME, self.conf)
self.plugin_api.get_external_network_id.return_value = 'aaa'
routers = [
{'id': _uuid(),
'routes': [],
'admin_state_up': True,
'external_gateway_info': {'network_id': 'aaa'}},
{'id': _uuid(),
'routes': [],
'admin_state_up': True,
'external_gateway_info': {'network_id': 'bbb'}}]
agent.router_info = {}
self.conf.set_override('external_network_bridge', '')
agent._process_routers(routers)
self.assertIn(routers[0]['id'], agent.router_info)
self.assertIn(routers[1]['id'], agent.router_info)
def test_nonexistent_interface_driver(self):
self.conf.set_override('interface_driver', None)
with mock.patch.object(l3_agent, 'LOG') as log:
self.assertRaises(SystemExit, l3_agent.L3NATAgent,
HOSTNAME, self.conf)
msg = 'An interface driver must be specified'
log.error.assert_called_once_with(msg)
self.conf.set_override('interface_driver', 'wrong_driver')
with mock.patch.object(l3_agent, 'LOG') as log:
self.assertRaises(SystemExit, l3_agent.L3NATAgent,
HOSTNAME, self.conf)
msg = "Error importing interface driver 'wrong_driver'"
log.error.assert_called_once_with(msg)
def test_metadata_filter_rules(self):
self.conf.set_override('enable_metadata_proxy', False)
agent = l3_agent.L3NATAgent(HOSTNAME, self.conf)
self.assertEqual([], agent.metadata_filter_rules())
self.conf.set_override('metadata_port', '8775')
self.conf.set_override('enable_metadata_proxy', True)
agent = l3_agent.L3NATAgent(HOSTNAME, self.conf)
rules = ('INPUT', '-s 0.0.0.0/0 -d 127.0.0.1 '
'-p tcp -m tcp --dport 8775 -j ACCEPT')
self.assertEqual([rules], agent.metadata_filter_rules())
def _cleanup_namespace_test(self,
stale_namespace_list,
router_list,
other_namespaces):
self.conf.set_override('router_delete_namespaces', True)
good_namespace_list = [l3_agent.NS_PREFIX + r['id']
for r in router_list]
good_namespace_list += [l3_agent.SNAT_NS_PREFIX + r['id']
for r in router_list]
self.mock_ip.get_namespaces.return_value = (stale_namespace_list +
good_namespace_list +
other_namespaces)
agent = l3_agent.L3NATAgent(HOSTNAME, self.conf)
self.assertTrue(agent._clean_stale_namespaces)
pm = self.external_process.return_value
pm.reset_mock()
agent._destroy_router_namespace = mock.MagicMock()
agent._destroy_snat_namespace = mock.MagicMock()
ns_list = agent._list_namespaces()
agent._cleanup_namespaces(ns_list, [r['id'] for r in router_list])
# Expect process manager to disable one radvd per stale namespace
expected_pm_disables = len(stale_namespace_list)
# Expect process manager to disable metadata proxy per qrouter ns
qrouters = [n for n in stale_namespace_list
if n.startswith(l3_agent.NS_PREFIX)]
expected_pm_disables += len(qrouters)
self.assertEqual(expected_pm_disables, pm.disable.call_count)
self.assertEqual(agent._destroy_router_namespace.call_count,
len(qrouters))
self.assertEqual(agent._destroy_snat_namespace.call_count,
len(stale_namespace_list) - len(qrouters))
expected_args = [mock.call(ns) for ns in qrouters]
agent._destroy_router_namespace.assert_has_calls(expected_args,
any_order=True)
self.assertFalse(agent._clean_stale_namespaces)
def test_cleanup_namespace(self):
self.conf.set_override('router_id', None)
stale_namespaces = [l3_agent.NS_PREFIX + 'foo',
l3_agent.NS_PREFIX + 'bar',
l3_agent.SNAT_NS_PREFIX + 'foo']
other_namespaces = ['unknown']
self._cleanup_namespace_test(stale_namespaces,
[],
other_namespaces)
def test_cleanup_namespace_with_registered_router_ids(self):
self.conf.set_override('router_id', None)
stale_namespaces = [l3_agent.NS_PREFIX + 'cccc',
l3_agent.NS_PREFIX + 'eeeee',
l3_agent.SNAT_NS_PREFIX + 'fffff']
router_list = [{'id': 'foo', 'distributed': False},
{'id': 'aaaa', 'distributed': False}]
other_namespaces = ['qdhcp-aabbcc', 'unknown']
self._cleanup_namespace_test(stale_namespaces,
router_list,
other_namespaces)
def test_cleanup_namespace_with_conf_router_id(self):
self.conf.set_override('router_id', 'bbbbb')
stale_namespaces = [l3_agent.NS_PREFIX + 'cccc',
l3_agent.NS_PREFIX + 'eeeee',
l3_agent.NS_PREFIX + self.conf.router_id]
router_list = [{'id': 'foo', 'distributed': False},
{'id': 'aaaa', 'distributed': False}]
other_namespaces = ['qdhcp-aabbcc', 'unknown']
self._cleanup_namespace_test(stale_namespaces,
router_list,
other_namespaces)
def test_create_dvr_gateway(self):
agent = l3_agent.L3NATAgent(HOSTNAME, self.conf)
router = prepare_router_data()
ri = l3_agent.RouterInfo(router['id'], self.conf.root_helper,
self.conf.use_namespaces, router=router)
port_id = _uuid()
dvr_gw_port = {'fixed_ips': [{'ip_address': '20.0.0.30',
'subnet_id': _uuid()}],
'subnet': {'gateway_ip': '20.0.0.1'},
'id': port_id,
'network_id': _uuid(),
'mac_address': 'ca:fe:de:ad:be:ef',
'ip_cidr': '20.0.0.30/24'}
snat_ports = [{'subnet': {'cidr': '152.2.0.0/16',
'gateway_ip': '152.2.0.1',
'id': _uuid()},
'network_id': _uuid(),
'device_owner': 'network:router_centralized_snat',
'ip_cidr': '152.2.0.13/16',
'mac_address': 'fa:16:3e:80:8d:80',
'fixed_ips': [{'subnet_id': _uuid(),
'ip_address': '152.2.0.13'}],
'id': _uuid(), 'device_id': _uuid()},
{'subnet': {'cidr': '152.10.0.0/16',
'gateway_ip': '152.10.0.1',
'id': _uuid()},
'network_id': _uuid(),
'device_owner': 'network:router_centralized_snat',
'ip_cidr': '152.10.0.13/16',
'mac_address': 'fa:16:3e:80:8d:80',
'fixed_ips': [{'subnet_id': _uuid(),
'ip_address': '152.10.0.13'}],
'id': _uuid(), 'device_id': _uuid()}]
interface_name = agent.get_snat_int_device_name(port_id)
self.device_exists.return_value = False
agent._create_dvr_gateway(ri, dvr_gw_port, interface_name, snat_ports)
# check 2 internal ports are plugged
# check 1 ext-gw-port is plugged
self.assertEqual(self.mock_driver.plug.call_count, 3)
self.assertEqual(self.mock_driver.init_l3.call_count, 3)
def test_agent_gateway_added(self):
agent = l3_agent.L3NATAgent(HOSTNAME, self.conf)
network_id = _uuid()
port_id = _uuid()
agent_gw_port = {'fixed_ips': [{'ip_address': '20.0.0.30',
'subnet_id': _uuid()}],
'subnet': {'gateway_ip': '20.0.0.1'},
'id': port_id,
'network_id': network_id,
'mac_address': 'ca:fe:de:ad:be:ef',
'ip_cidr': '20.0.0.30/24'}
fip_ns_name = (
agent.get_fip_ns_name(str(network_id)))
interface_name = (
agent.get_fip_ext_device_name(port_id))
self.device_exists.return_value = False
agent.agent_gateway_added(fip_ns_name, agent_gw_port,
interface_name)
self.assertEqual(self.mock_driver.plug.call_count, 1)
self.assertEqual(self.mock_driver.init_l3.call_count, 1)
if self.conf.use_namespaces:
self.send_arp.assert_called_once_with(fip_ns_name, interface_name,
'20.0.0.30')
else:
self.utils_exec.assert_any_call(
check_exit_code=True, root_helper=self.conf.root_helper)
def test_create_rtr_2_fip_link(self):
agent = l3_agent.L3NATAgent(HOSTNAME, self.conf)
router = prepare_router_data()
fip = {'id': _uuid(),
'host': HOSTNAME,
'floating_ip_address': '15.1.2.3',
'fixed_ip_address': '192.168.0.1',
'floating_network_id': _uuid(),
'port_id': _uuid()}
ri = l3_agent.RouterInfo(router['id'], self.conf.root_helper,
self.conf.use_namespaces, router=router)
rtr_2_fip_name = agent.get_rtr_int_device_name(ri.router_id)
fip_2_rtr_name = agent.get_fip_int_device_name(ri.router_id)
fip_ns_name = agent.get_fip_ns_name(str(fip['floating_network_id']))
with mock.patch.object(l3_agent.LinkLocalAllocator, '_write'):
agent.create_rtr_2_fip_link(ri, fip['floating_network_id'])
self.mock_ip.add_veth.assert_called_with(rtr_2_fip_name,
fip_2_rtr_name, fip_ns_name)
# TODO(mrsmith): add more aasserts -
self.mock_ip_dev.route.add_gateway.assert_called_once_with(
'169.254.31.29', table=16)
# TODO(mrsmith): test _create_agent_gateway_port
def test_floating_ip_added_dist(self):
agent = l3_agent.L3NATAgent(HOSTNAME, self.conf)
router = prepare_router_data()
ri = l3_agent.RouterInfo(router['id'], self.conf.root_helper,
self.conf.use_namespaces, router=router)
agent_gw_port = {'fixed_ips': [{'ip_address': '20.0.0.30',
'subnet_id': _uuid()}],
'subnet': {'gateway_ip': '20.0.0.1'},
'id': _uuid(),
'network_id': _uuid(),
'mac_address': 'ca:fe:de:ad:be:ef',
'ip_cidr': '20.0.0.30/24'}
fip = {'id': _uuid(),
'host': HOSTNAME,
'floating_ip_address': '15.1.2.3',
'fixed_ip_address': '192.168.0.1',
'floating_network_id': _uuid(),
'port_id': _uuid()}
agent.agent_gateway_port = agent_gw_port
ri.rtr_fip_subnet = l3_agent.LinkLocalAddressPair('169.254.30.42/31')
agent.floating_ip_added_dist(ri, fip)
self.mock_rule.add_rule_from.assert_called_with('192.168.0.1',
16, FIP_PRI)
# TODO(mrsmith): add more asserts
@mock.patch.object(l3_agent.LinkLocalAllocator, '_write')
def test_floating_ip_removed_dist(self, write):
agent = l3_agent.L3NATAgent(HOSTNAME, self.conf)
router = prepare_router_data()
agent_gw_port = {'fixed_ips': [{'ip_address': '20.0.0.30',
'subnet_id': _uuid()}],
'subnet': {'gateway_ip': '20.0.0.1'},
'id': _uuid(),
'network_id': _uuid(),
'mac_address': 'ca:fe:de:ad:be:ef',
'ip_cidr': '20.0.0.30/24'}
fip_cidr = '11.22.33.44/24'
ri = l3_agent.RouterInfo(router['id'], self.conf.root_helper,
self.conf.use_namespaces, router=router)
ri.dist_fip_count = 2
ri.floating_ips_dict['11.22.33.44'] = FIP_PRI
ri.fip_2_rtr = '11.22.33.42'
ri.rtr_2_fip = '11.22.33.40'
agent.agent_gateway_port = agent_gw_port
s = l3_agent.LinkLocalAddressPair('169.254.30.42/31')
ri.rtr_fip_subnet = s
agent.floating_ip_removed_dist(ri, fip_cidr)
self.mock_rule.delete_rule_priority.assert_called_with(FIP_PRI)
self.mock_ip_dev.route.delete_route.assert_called_with(fip_cidr,
str(s.ip))
with mock.patch.object(agent, '_destroy_fip_namespace') as f:
ri.dist_fip_count = 1
agent.agent_fip_count = 1
fip_ns_name = agent.get_fip_ns_name(
str(agent._fetch_external_net_id()))
ri.rtr_fip_subnet = agent.local_subnets.allocate(ri.router_id)
_, fip_to_rtr = ri.rtr_fip_subnet.get_pair()
agent.floating_ip_removed_dist(ri, fip_cidr)
self.mock_ip.del_veth.assert_called_once_with(
agent.get_fip_int_device_name(router['id']))
self.mock_ip_dev.route.delete_gateway.assert_called_once_with(
str(fip_to_rtr.ip), table=16)
f.assert_called_once_with(fip_ns_name)
def test_get_service_plugin_list(self):
service_plugins = [p_const.L3_ROUTER_NAT]
self.plugin_api.get_service_plugin_list.return_value = service_plugins
agent = l3_agent.L3NATAgent(HOSTNAME, self.conf)
self.assertEqual(service_plugins, agent.neutron_service_plugins)
self.assertTrue(self.plugin_api.get_service_plugin_list.called)
def test_get_service_plugin_list_failed(self):
raise_rpc = n_rpc.RemoteError()
self.plugin_api.get_service_plugin_list.side_effect = raise_rpc
agent = l3_agent.L3NATAgent(HOSTNAME, self.conf)
self.assertIsNone(agent.neutron_service_plugins)
self.assertTrue(self.plugin_api.get_service_plugin_list.called)
class TestL3AgentEventHandler(base.BaseTestCase):
def setUp(self):
super(TestL3AgentEventHandler, self).setUp()
cfg.CONF.register_opts(l3_agent.L3NATAgent.OPTS)
agent_config.register_interface_driver_opts_helper(cfg.CONF)
agent_config.register_use_namespaces_opts_helper(cfg.CONF)
cfg.CONF.set_override(
'interface_driver', 'neutron.agent.linux.interface.NullDriver'
)
cfg.CONF.set_override('use_namespaces', True)
cfg.CONF.set_override('verbose', False)
agent_config.register_root_helper(cfg.CONF)
device_exists_p = mock.patch(
'neutron.agent.linux.ip_lib.device_exists')
device_exists_p.start()
utils_exec_p = mock.patch(
'neutron.agent.linux.utils.execute')
utils_exec_p.start()
drv_cls_p = mock.patch('neutron.agent.linux.interface.NullDriver')
driver_cls = drv_cls_p.start()
mock_driver = mock.MagicMock()
mock_driver.DEV_NAME_LEN = (
interface.LinuxInterfaceDriver.DEV_NAME_LEN)
driver_cls.return_value = mock_driver
l3_plugin_p = mock.patch(
'neutron.agent.l3_agent.L3PluginApi')
l3_plugin_cls = l3_plugin_p.start()
l3_plugin_cls.return_value = mock.MagicMock()
self.external_process_p = mock.patch(
'neutron.agent.linux.external_process.ProcessManager'
)
self.external_process_p.start()
looping_call_p = mock.patch(
'neutron.openstack.common.loopingcall.FixedIntervalLoopingCall')
looping_call_p.start()
self.agent = l3_agent.L3NATAgent(HOSTNAME)
def test_spawn_metadata_proxy(self):
router_id = _uuid()
metadata_port = 8080
ip_class_path = 'neutron.agent.linux.ip_lib.IPWrapper'
cfg.CONF.set_override('metadata_port', metadata_port)
cfg.CONF.set_override('log_file', 'test.log')
cfg.CONF.set_override('debug', True)
self.external_process_p.stop()
ns = 'qrouter-' + router_id
try:
with mock.patch(ip_class_path) as ip_mock:
self.agent._spawn_metadata_proxy(router_id, ns)
ip_mock.assert_has_calls([
mock.call('sudo', ns),
mock.call().netns.execute([
'neutron-ns-metadata-proxy',
mock.ANY,
mock.ANY,
'--router_id=%s' % router_id,
mock.ANY,
'--metadata_port=%s' % metadata_port,
'--debug',
'--log-file=neutron-ns-metadata-proxy-%s.log' %
router_id
], addl_env=None)
])
finally:
self.external_process_p.start()
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