OpenStack Networking (Neutron)
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# Copyright (c) 2014 OpenStack Foundation.
# 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.
from datetime import datetime
import errno
import os
import shutil
from unittest import mock
import warnings
import fixtures
from neutron_lib import fixture
from neutron_lib.plugins import constants
from neutron_lib.plugins import directory
from oslo_concurrency import lockutils
from oslo_config import cfg
from oslo_db import exception as os_db_exc
from oslo_db.sqlalchemy import provision
from oslo_log import log
from oslo_utils import uuidutils
from neutron.agent.linux import utils
from neutron.api import extensions as exts
from neutron.conf.agent import common as config
from neutron.conf.agent import ovs_conf
from neutron.conf.plugins.ml2 import config as ml2_config
from neutron.conf.plugins.ml2.drivers.ovn import ovn_conf
# Load all the models to register them into SQLAlchemy metadata before using
# the SqlFixture
from neutron.db import models # noqa
from neutron import manager
from neutron.plugins.ml2.drivers.ovn.mech_driver.ovsdb import worker
from neutron.plugins.ml2.drivers import type_geneve # noqa
from neutron.tests import base
from neutron.tests.common import base as common_base
from neutron.tests.common import helpers
from neutron.tests.functional.resources import process
from neutron.tests.unit.plugins.ml2 import test_plugin
LOG = log.getLogger(__name__)
# This is the directory from which infra fetches log files for functional tests
DEFAULT_LOG_DIR = os.path.join(helpers.get_test_log_path(),
'dsvm-functional-logs')
SQL_FIXTURE_LOCK = 'sql_fixture_lock'
def config_decorator(method_to_decorate, config_tuples):
def wrapper(*args, **kwargs):
method_to_decorate(*args, **kwargs)
for config_tuple in config_tuples:
cfg.CONF.set_override(*config_tuple)
return wrapper
class BaseLoggingTestCase(base.BaseTestCase):
def setUp(self):
super(BaseLoggingTestCase, self).setUp()
# NOTE(slaweq): Because of issue with stestr and Python3, we need
# to avoid too much output to be produced during tests, so we will
# ignore python warnings here
warnings.simplefilter("ignore")
base.setup_test_logging(
cfg.CONF, DEFAULT_LOG_DIR, "%s.txt" % self.id())
cfg.CONF.set_override('use_helper_for_ns_read', False, group='AGENT')
class BaseSudoTestCase(BaseLoggingTestCase):
"""Base class for tests requiring invocation of commands via a root helper.
This class skips (during setUp) its tests unless sudo is enabled, ie:
OS_SUDO_TESTING is set to '1' or 'True' in the test execution environment.
This is intended to allow developers to run the functional suite (e.g. tox
-e functional) without test failures if sudo invocations are not allowed.
Running sudo tests in the upstream gate jobs
(*-neutron-dsvm-functional) requires the additional step of
setting OS_ROOTWRAP_CMD to the rootwrap command configured by
devstack, e.g.
sudo /usr/local/bin/neutron-rootwrap /etc/neutron/rootwrap.conf
Gate jobs do not allow invocations of sudo without rootwrap to
ensure that rootwrap configuration gets as much testing as
possible.
"""
def setUp(self):
super(BaseSudoTestCase, self).setUp()
if not base.bool_from_env('OS_SUDO_TESTING'):
self.skipTest('Testing with sudo is not enabled')
self.setup_rootwrap()
config.setup_privsep()
self._override_default_config()
@common_base.no_skip_on_missing_deps
def check_command(self, cmd, error_text, skip_msg, run_as_root=False):
try:
utils.execute(cmd, run_as_root=run_as_root)
except RuntimeError as e:
if error_text in str(e):
self.skipTest(skip_msg)
raise
@staticmethod
def _override_default_config():
# NOTE(ralonsoh): once https://review.opendev.org/#/c/641681/ is
# merged, we should increase the default value of those new parameters.
ovs_agent_opts = [('ovsdb_timeout', 30, 'OVS'),
('ovsdb_debug', True, 'OVS'),
]
ovs_agent_decorator = config_decorator(
ovs_conf.register_ovs_agent_opts, ovs_agent_opts)
mock.patch.object(ovs_conf, 'register_ovs_agent_opts',
new=ovs_agent_decorator).start()
class OVNSqlFixture(fixture.StaticSqlFixture):
@classmethod
@lockutils.synchronized(SQL_FIXTURE_LOCK)
def _init_resources(cls):
cls.schema_resource = provision.SchemaResource(
provision.DatabaseResource("sqlite"),
cls._generate_schema, teardown=False)
dependency_resources = {}
for name, resource in cls.schema_resource.resources:
dependency_resources[name] = resource.getResource()
cls.schema_resource.make(dependency_resources)
cls.engine = dependency_resources['database'].engine
def _delete_from_schema(self, engine):
try:
super(OVNSqlFixture, self)._delete_from_schema(engine)
except os_db_exc.DBNonExistentTable:
pass
class TestOVNFunctionalBase(test_plugin.Ml2PluginV2TestCase,
BaseLoggingTestCase):
OVS_DISTRIBUTION = 'openvswitch'
OVN_DISTRIBUTION = 'ovn'
OVN_SCHEMA_FILES = ['ovn-nb.ovsschema', 'ovn-sb.ovsschema']
_mechanism_drivers = ['logger', 'ovn']
_extension_drivers = ['port_security']
_counter = 0
l3_plugin = 'neutron.services.ovn_l3.plugin.OVNL3RouterPlugin'
def setUp(self, maintenance_worker=False):
ml2_config.cfg.CONF.set_override('extension_drivers',
self._extension_drivers,
group='ml2')
ml2_config.cfg.CONF.set_override('tenant_network_types',
['geneve'],
group='ml2')
ml2_config.cfg.CONF.set_override('vni_ranges',
['1:65536'],
group='ml2_type_geneve')
ovn_conf.cfg.CONF.set_override('dns_servers',
['10.10.10.10'],
group='ovn')
self.addCleanup(exts.PluginAwareExtensionManager.clear_instance)
super(TestOVNFunctionalBase, self).setUp()
self.test_log_dir = os.path.join(DEFAULT_LOG_DIR, self.id())
base.setup_test_logging(
cfg.CONF, self.test_log_dir, "testrun.txt")
mm = directory.get_plugin().mechanism_manager
self.mech_driver = mm.mech_drivers['ovn'].obj
self.l3_plugin = directory.get_plugin(constants.L3)
self.segments_plugin = directory.get_plugin('segments')
# OVN does not use RPC: disable it for port-forwarding tests
self.pf_plugin = manager.NeutronManager.load_class_for_provider(
'neutron.service_plugins', 'port_forwarding')()
self.pf_plugin._rpc_notifications_required = False
self.ovsdb_server_mgr = None
self.ovn_northd_mgr = None
self.maintenance_worker = maintenance_worker
self.temp_dir = self.useFixture(fixtures.TempDir()).path
self._start_ovsdb_server_and_idls()
self._start_ovn_northd()
def _get_install_share_path(self):
lookup_paths = set()
for installation in ['local', '']:
for distribution in [self.OVN_DISTRIBUTION, self.OVS_DISTRIBUTION]:
exists = True
for ovn_file in self.OVN_SCHEMA_FILES:
path = os.path.join(os.path.sep, 'usr', installation,
'share', distribution, ovn_file)
exists &= os.path.isfile(path)
lookup_paths.add(os.path.dirname(path))
if exists:
return os.path.dirname(path)
msg = 'Either ovn-nb.ovsschema and/or ovn-sb.ovsschema are missing. '
msg += 'Looked for schemas in paths:' + ', '.join(sorted(lookup_paths))
raise FileNotFoundError(
errno.ENOENT, os.strerror(errno.ENOENT), msg)
# FIXME(lucasagomes): Workaround for
# https://bugs.launchpad.net/networking-ovn/+bug/1808146. We should
# investigate and properly fix the problem. This method is just a
# workaround to alleviate the gate for now and should not be considered
# a proper fix.
def _setup_database_fixtures(self):
fixture = OVNSqlFixture()
self.useFixture(fixture)
self.engine = fixture.engine
def get_additional_service_plugins(self):
p = super(TestOVNFunctionalBase, self).get_additional_service_plugins()
p.update({'revision_plugin_name': 'revisions'})
p.update({'segments': 'neutron.services.segments.plugin.Plugin'})
return p
@property
def _ovsdb_protocol(self):
return self.get_ovsdb_server_protocol()
def get_ovsdb_server_protocol(self):
return 'unix'
def _start_ovn_northd(self):
if not self.ovsdb_server_mgr:
return
ovn_nb_db = self.ovsdb_server_mgr.get_ovsdb_connection_path('nb')
ovn_sb_db = self.ovsdb_server_mgr.get_ovsdb_connection_path('sb')
self.ovn_northd_mgr = self.useFixture(
process.OvnNorthd(self.temp_dir,
ovn_nb_db, ovn_sb_db,
protocol=self._ovsdb_protocol))
def _start_ovsdb_server_and_idls(self):
# Start 2 ovsdb-servers one each for OVN NB DB and OVN SB DB
# ovsdb-server with OVN SB DB can be used to test the chassis up/down
# events.
install_share_path = self._get_install_share_path()
self.ovsdb_server_mgr = self.useFixture(
process.OvsdbServer(self.temp_dir, install_share_path,
ovn_nb_db=True, ovn_sb_db=True,
protocol=self._ovsdb_protocol))
set_cfg = cfg.CONF.set_override
set_cfg('ovn_nb_connection',
self.ovsdb_server_mgr.get_ovsdb_connection_path(), 'ovn')
set_cfg('ovn_sb_connection',
self.ovsdb_server_mgr.get_ovsdb_connection_path(
db_type='sb'), 'ovn')
set_cfg('ovn_nb_private_key', self.ovsdb_server_mgr.private_key, 'ovn')
set_cfg('ovn_nb_certificate', self.ovsdb_server_mgr.certificate, 'ovn')
set_cfg('ovn_nb_ca_cert', self.ovsdb_server_mgr.ca_cert, 'ovn')
set_cfg('ovn_sb_private_key', self.ovsdb_server_mgr.private_key, 'ovn')
set_cfg('ovn_sb_certificate', self.ovsdb_server_mgr.certificate, 'ovn')
set_cfg('ovn_sb_ca_cert', self.ovsdb_server_mgr.ca_cert, 'ovn')
# NOTE(mjozefcz): We can find occasional functional test
# failures because of low timeout value - set it to 30
# seconds, should be enought. More info: 1868110
cfg.CONF.set_override(
'ovsdb_connection_timeout', 30,
'ovn')
class TriggerCls(mock.MagicMock):
def trigger(self):
pass
trigger_cls = TriggerCls()
if self.maintenance_worker:
trigger_cls.trigger.__self__.__class__ = worker.MaintenanceWorker
cfg.CONF.set_override('neutron_sync_mode', 'off', 'ovn')
self.addCleanup(self._collect_processes_logs)
self.addCleanup(self.stop)
self.mech_driver.pre_fork_initialize(
mock.ANY, mock.ANY, trigger_cls.trigger)
# mech_driver.post_fork_initialize creates the IDL connections
self.mech_driver.post_fork_initialize(
mock.ANY, mock.ANY, trigger_cls.trigger)
self.nb_api = self.mech_driver._nb_ovn
self.sb_api = self.mech_driver._sb_ovn
def _collect_processes_logs(self):
for database in ("nb", "sb"):
for file_suffix in ("log", "db"):
src_filename = "ovn_%(db)s.%(suffix)s" % {
'db': database,
'suffix': file_suffix
}
dst_filename = "ovn_%(db)s-%(timestamp)s.%(suffix)s" % {
'db': database,
'suffix': file_suffix,
'timestamp': datetime.now().strftime('%y-%m-%d_%H-%M-%S'),
}
filepath = os.path.join(self.temp_dir, src_filename)
shutil.copyfile(
filepath, os.path.join(self.test_log_dir, dst_filename))
def stop(self):
if self.maintenance_worker:
self.mech_driver.nb_synchronizer.stop()
self.mech_driver.sb_synchronizer.stop()
self.mech_driver._nb_ovn.ovsdb_connection.stop()
self.mech_driver._sb_ovn.ovsdb_connection.stop()
def restart(self):
self.stop()
if self.ovsdb_server_mgr:
self.ovsdb_server_mgr.stop()
if self.ovn_northd_mgr:
self.ovn_northd_mgr.stop()
self.ovsdb_server_mgr.delete_dbs()
self._start_ovsdb_server_and_idls()
self._start_ovn_northd()
def add_fake_chassis(self, host, physical_nets=None, external_ids=None,
name=None):
physical_nets = physical_nets or []
external_ids = external_ids or {}
bridge_mapping = ",".join(["%s:br-provider%s" % (phys_net, i)
for i, phys_net in enumerate(physical_nets)])
if name is None:
name = uuidutils.generate_uuid()
external_ids['ovn-bridge-mappings'] = bridge_mapping
# We'll be using different IP addresses every time for the Encap of
# the fake chassis as the SB schema doesn't allow to have two entries
# with same (ip,type) pairs as of OVS 2.11. This shouldn't have any
# impact as the tunnels won't get created anyways since ovn-controller
# is not running. Ideally we shouldn't be creating more than 255
# fake chassis but from the SB db point of view, 'ip' column can be
# any string so we could add entries with ip='172.24.4.1000'.
self._counter += 1
self.sb_api.chassis_add(
name, ['geneve'], '172.24.4.%d' % self._counter,
external_ids=external_ids, hostname=host).execute(check_error=True)
return name
def del_fake_chassis(self, chassis, if_exists=True):
self.sb_api.chassis_del(
chassis, if_exists=if_exists).execute(check_error=True)