OpenStack Networking (Neutron)
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# Copyright (c) 2015 Red Hat, Inc.
# Copyright (c) 2015 SUSE Linux Products GmbH
# 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 random
import eventlet
import mock
from neutron_lib import constants as n_const
from neutron_lib.utils import net
from oslo_config import cfg
from oslo_utils import uuidutils
from neutron.agent.common import ovs_lib
from neutron.agent.l2 import l2_agent_extensions_manager as ext_manager
from neutron.agent.linux import interface
from neutron.agent.linux import polling
from neutron.common import utils
from neutron.conf.agent import common as agent_config
from neutron.conf.agent import ovs_conf as ovs_agent_config
from neutron.conf import common as common_config
from neutron.conf.plugins.ml2.drivers import agent
from neutron.conf.plugins.ml2.drivers import ovs_conf
from neutron.plugins.ml2.drivers.openvswitch.agent.common import constants
from neutron.plugins.ml2.drivers.openvswitch.agent.openflow.ovs_ofctl \
import br_int
from neutron.plugins.ml2.drivers.openvswitch.agent.openflow.ovs_ofctl \
import br_phys
from neutron.plugins.ml2.drivers.openvswitch.agent.openflow.ovs_ofctl \
import br_tun
from neutron.plugins.ml2.drivers.openvswitch.agent import ovs_neutron_agent \
as ovs_agent
from neutron.tests.common import net_helpers
from neutron.tests.functional.agent.linux import base
class OVSAgentTestFramework(base.BaseOVSLinuxTestCase):
def setUp(self):
super(OVSAgentTestFramework, self).setUp()
agent_rpc = ('neutron.plugins.ml2.drivers.openvswitch.agent.'
'ovs_neutron_agent.OVSPluginApi')
mock.patch(agent_rpc).start()
mock.patch('neutron.agent.rpc.PluginReportStateAPI').start()
self.br_int = utils.get_rand_name(n_const.DEVICE_NAME_MAX_LEN,
prefix='br-int')
self.br_tun = utils.get_rand_name(n_const.DEVICE_NAME_MAX_LEN,
prefix='br-tun')
self.br_phys = utils.get_rand_name(n_const.DEVICE_NAME_MAX_LEN,
prefix='br-phys')
patch_name_len = n_const.DEVICE_NAME_MAX_LEN - len("-patch-tun")
self.patch_tun = "%s-patch-tun" % self.br_int[patch_name_len:]
self.patch_int = "%s-patch-int" % self.br_tun[patch_name_len:]
self.ovs = ovs_lib.BaseOVS()
self.config = self._configure_agent()
self.driver = interface.OVSInterfaceDriver(self.config)
self.namespace = self.useFixture(net_helpers.NamespaceFixture()).name
def _get_config_opts(self):
config = cfg.ConfigOpts()
config.register_opts(common_config.core_opts)
agent.register_agent_opts(config)
ovs_conf.register_ovs_agent_opts(config)
agent_config.register_interface_opts(config)
agent_config.register_interface_driver_opts_helper(config)
agent_config.register_agent_state_opts_helper(config)
ovs_agent_config.register_ovs_agent_opts(config)
ext_manager.register_opts(config)
return config
def _configure_agent(self):
config = self._get_config_opts()
config.set_override(
'interface_driver',
'neutron.agent.linux.interface.OVSInterfaceDriver')
config.set_override('integration_bridge', self.br_int, "OVS")
config.set_override('ovs_integration_bridge', self.br_int)
config.set_override('tunnel_bridge', self.br_tun, "OVS")
config.set_override('int_peer_patch_port', self.patch_tun, "OVS")
config.set_override('tun_peer_patch_port', self.patch_int, "OVS")
config.set_override('host', 'ovs-agent')
return config
def _bridge_classes(self):
return {
'br_int': br_int.OVSIntegrationBridge,
'br_phys': br_phys.OVSPhysicalBridge,
'br_tun': br_tun.OVSTunnelBridge
}
def create_agent(self, create_tunnels=True, ancillary_bridge=None,
local_ip='192.168.10.1'):
if create_tunnels:
tunnel_types = [n_const.TYPE_VXLAN]
else:
tunnel_types = None
bridge_mappings = ['physnet:%s' % self.br_phys]
self.config.set_override('tunnel_types', tunnel_types, "AGENT")
self.config.set_override('polling_interval', 1, "AGENT")
self.config.set_override('local_ip', local_ip, "OVS")
self.config.set_override('bridge_mappings', bridge_mappings, "OVS")
# Physical bridges should be created prior to running
self._bridge_classes()['br_phys'](self.br_phys).create()
ext_mgr = ext_manager.L2AgentExtensionsManager(self.config)
agent = ovs_agent.OVSNeutronAgent(self._bridge_classes(),
ext_mgr, self.config)
self.addCleanup(self.ovs.delete_bridge, self.br_int)
if tunnel_types:
self.addCleanup(self.ovs.delete_bridge, self.br_tun)
self.addCleanup(self.ovs.delete_bridge, self.br_phys)
agent.sg_agent = mock.Mock()
agent.ancillary_brs = []
if ancillary_bridge:
agent.ancillary_brs.append(ancillary_bridge)
return agent
def _mock_get_events(self, agent, polling_manager, ports):
get_events = polling_manager.get_events
p_ids = [p['id'] for p in ports]
def filter_events():
events = get_events()
filtered_ports = []
for dev in events['added']:
iface_id = agent.int_br.portid_from_external_ids(
dev.get('external_ids', []))
if iface_id in p_ids:
# if the event is not about a port that was created by
# this test, we filter the event out. Since these tests are
# not run in isolation processing all the events might make
# some test fail ( e.g. the agent might keep resycing
# because it keeps finding not ready ports that are created
# by other tests)
filtered_ports.append(dev)
return {'added': filtered_ports, 'removed': events['removed']}
polling_manager.get_events = mock.Mock(side_effect=filter_events)
def stop_agent(self, agent, rpc_loop_thread):
agent.run_daemon_loop = False
rpc_loop_thread.wait()
def start_agent(self, agent, ports=None, unplug_ports=None):
if unplug_ports is None:
unplug_ports = []
if ports is None:
ports = []
self.setup_agent_rpc_mocks(agent, unplug_ports)
polling_manager = polling.InterfacePollingMinimizer()
self._mock_get_events(agent, polling_manager, ports)
self.addCleanup(polling_manager.stop)
polling_manager.start()
utils.wait_until_true(
polling_manager._monitor.is_active)
agent.check_ovs_status = mock.Mock(
return_value=constants.OVS_NORMAL)
self.agent_thread = eventlet.spawn(agent.rpc_loop,
polling_manager)
self.addCleanup(self.stop_agent, agent, self.agent_thread)
return polling_manager
def _create_test_port_dict(self):
return {'id': uuidutils.generate_uuid(),
'mac_address': net.get_random_mac(
'fa:16:3e:00:00:00'.split(':')),
'fixed_ips': [{
'ip_address': '10.%d.%d.%d' % (
random.randint(3, 254),
random.randint(3, 254),
random.randint(3, 254))}],
'vif_name': utils.get_rand_name(
self.driver.DEV_NAME_LEN, self.driver.DEV_NAME_PREFIX)}
def _create_test_network_dict(self):
return {'id': uuidutils.generate_uuid(),
'tenant_id': uuidutils.generate_uuid()}
def _plug_ports(self, network, ports, agent,
bridge=None, namespace=None):
if namespace is None:
namespace = self.namespace
for port in ports:
bridge = bridge or agent.int_br
self.driver.plug(
network.get('id'), port.get('id'), port.get('vif_name'),
port.get('mac_address'),
bridge.br_name, namespace=namespace)
ip_cidrs = ["%s/8" % (port.get('fixed_ips')[0][
'ip_address'])]
self.driver.init_l3(port.get('vif_name'), ip_cidrs,
namespace=namespace)
def _unplug_ports(self, ports, agent):
for port in ports:
self.driver.unplug(
port.get('vif_name'), agent.int_br.br_name, self.namespace)
def _get_device_details(self, port, network):
dev = {'device': port['id'],
'port_id': port['id'],
'network_id': network['id'],
'network_type': network.get('network_type', 'vlan'),
'physical_network': network.get('physical_network', 'physnet'),
'segmentation_id': network.get('segmentation_id', 1),
'fixed_ips': port['fixed_ips'],
'device_owner': n_const.DEVICE_OWNER_COMPUTE_PREFIX,
'admin_state_up': True}
return dev
def assert_bridge(self, br, exists=True):
self.assertEqual(exists, self.ovs.bridge_exists(br))
def assert_patch_ports(self, agent):
def get_peer(port):
return agent.int_br.db_get_val(
'Interface', port, 'options', check_error=True)
utils.wait_until_true(
lambda: get_peer(self.patch_int) == {'peer': self.patch_tun})
utils.wait_until_true(
lambda: get_peer(self.patch_tun) == {'peer': self.patch_int})
def assert_bridge_ports(self):
for port in [self.patch_tun, self.patch_int]:
self.assertTrue(self.ovs.port_exists(port))
def assert_vlan_tags(self, ports, agent):
for port in ports:
res = agent.int_br.db_get_val('Port', port.get('vif_name'), 'tag')
self.assertTrue(res)
def _expected_plugin_rpc_call(self, call, expected_devices, is_up=True):
"""Helper to check expected rpc call are received
:param call: The call to check
:param expected_devices: The device for which call is expected
:param is_up: True if expected_devices are devices that are set up,
False if expected_devices are devices that are set down
"""
if is_up:
rpc_devices = [
dev for args in call.call_args_list for dev in args[0][1]]
else:
rpc_devices = [
dev for args in call.call_args_list for dev in args[0][2]]
for dev in rpc_devices:
if dev in expected_devices:
expected_devices.remove(dev)
# reset mock otherwise if the mock is called again the same call param
# will be processed again
call.reset_mock()
return not expected_devices
def create_test_ports(self, amount=3, **kwargs):
ports = []
for x in range(amount):
ports.append(self._create_test_port_dict(**kwargs))
return ports
def _mock_update_device(self, context, devices_up, devices_down, agent_id,
host=None, agent_restarted=False):
dev_up = []
dev_down = []
for port in self.ports:
if devices_up and port['id'] in devices_up:
dev_up.append(port['id'])
if devices_down and port['id'] in devices_down:
dev_down.append({'device': port['id'], 'exists': True})
return {'devices_up': dev_up,
'failed_devices_up': [],
'devices_down': dev_down,
'failed_devices_down': []}
def setup_agent_rpc_mocks(self, agent, unplug_ports):
def mock_device_details(context, devices, agent_id, host=None,
agent_restarted=False):
details = []
for port in self.ports:
if port['id'] in devices:
dev = self._get_device_details(
port, self.network)
details.append(dev)
ports_to_unplug = [x for x in unplug_ports if x['id'] in devices]
if ports_to_unplug:
self._unplug_ports(ports_to_unplug, self.agent)
return {'devices': details, 'failed_devices': []}
(agent.plugin_rpc.get_devices_details_list_and_failed_devices.
side_effect) = mock_device_details
agent.plugin_rpc.update_device_list.side_effect = (
self._mock_update_device)
def _prepare_resync_trigger(self, agent):
def mock_device_raise_exception(context, devices_up, devices_down,
agent_id, host=None):
agent.plugin_rpc.update_device_list.side_effect = (
self._mock_update_device)
raise Exception('Exception to trigger resync')
self.agent.plugin_rpc.update_device_list.side_effect = (
mock_device_raise_exception)
def _prepare_failed_dev_up_trigger(self, agent):
def mock_failed_devices_up(context, devices_up, devices_down,
agent_id, host=None,
agent_restarted=False):
failed_devices = []
devices = list(devices_up)
# first port fails
if self.ports[0]['id'] in devices_up:
# reassign side_effect so that next RPC call will succeed
agent.plugin_rpc.update_device_list.side_effect = (
self._mock_update_device)
devices.remove(self.ports[0]['id'])
failed_devices.append(self.ports[0]['id'])
return {'devices_up': devices,
'failed_devices_up': failed_devices,
'devices_down': [],
'failed_devices_down': []}
self.agent.plugin_rpc.update_device_list.side_effect = (
mock_failed_devices_up)
def _prepare_failed_dev_down_trigger(self, agent):
def mock_failed_devices_down(context, devices_up, devices_down,
agent_id, host=None,
agent_restarted=False):
# first port fails
failed_port_id = self.ports[0]['id']
failed_devices_down = []
dev_down = [
{'device': p['id'], 'exists': True}
for p in self.ports if p['id'] in devices_down and (
p['id'] != failed_port_id)]
# check if it's the call to set devices down and if the device
# that is supposed to fail is in the call then modify the
# side_effect so that next RPC call will succeed.
if devices_down and failed_port_id in devices_down:
agent.plugin_rpc.update_device_list.side_effect = (
self._mock_update_device)
failed_devices_down.append(failed_port_id)
return {'devices_up': devices_up,
'failed_devices_up': [],
'devices_down': dev_down,
'failed_devices_down': failed_devices_down}
self.agent.plugin_rpc.update_device_list.side_effect = (
mock_failed_devices_down)
def wait_until_ports_state(self, ports, up, timeout=60):
port_ids = [p['id'] for p in ports]
utils.wait_until_true(
lambda: self._expected_plugin_rpc_call(
self.agent.plugin_rpc.update_device_list, port_ids, up),
timeout=timeout)
def setup_agent_and_ports(self, port_dicts, create_tunnels=True,
ancillary_bridge=None,
trigger_resync=False,
failed_dev_up=False,
failed_dev_down=False,
network=None):
self.ports = port_dicts
self.agent = self.create_agent(create_tunnels=create_tunnels,
ancillary_bridge=ancillary_bridge)
self.agent.iter_num += 1
self.polling_manager = self.start_agent(self.agent, ports=self.ports)
self.network = network or self._create_test_network_dict()
if trigger_resync:
self._prepare_resync_trigger(self.agent)
elif failed_dev_up:
self._prepare_failed_dev_up_trigger(self.agent)
elif failed_dev_down:
self._prepare_failed_dev_down_trigger(self.agent)
self._plug_ports(self.network, self.ports, self.agent,
bridge=ancillary_bridge)
def plug_ports_to_phys_br(self, network, ports, namespace=None):
physical_network = network.get('physical_network', 'physnet')
phys_segmentation_id = network.get('segmentation_id', None)
network_type = network.get('network_type', 'flat')
phys_br = self.agent.phys_brs[physical_network]
self._plug_ports(network, ports, self.agent, bridge=phys_br,
namespace=namespace)
if network_type == 'flat':
# NOTE(slaweq): for OVS implementations remove the DEAD VLAN tag
# on ports that belongs to flat network. DEAD VLAN tag is added
# to each newly created port. This is related to lp#1767422
for port in ports:
phys_br.clear_db_attribute("Port", port['vif_name'], "tag")
elif phys_segmentation_id and network_type == 'vlan':
for port in ports:
phys_br.set_db_attribute(
"Port", port['vif_name'], "tag", phys_segmentation_id)