/usr/lib/python2.7/dist-packages/networking_ovn/tests/unit/l3/test_l3_ovn_scheduler.py is in python-networking-ovn 1.0.0-1.
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# 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 mock
import random
import six
from neutron.tests import base
from networking_ovn.common import constants as ovn_const
from networking_ovn.l3 import l3_ovn_scheduler
class FakeOVNGatewaySchedulerNbOvnIdl(object):
def __init__(self, chassis_router_mapping, router):
self.get_all_chassis_router_bindings = mock.Mock(
return_value=chassis_router_mapping['Chassis_Bindings'])
self.get_router_chassis_binding = mock.Mock(
return_value=chassis_router_mapping['Routers'].get(router, None))
class FakeOVNGatewaySchedulerSbOvnIdl(object):
def __init__(self, chassis_router_mapping):
self.get_all_chassis = mock.Mock(
return_value=chassis_router_mapping['Chassis'])
class TestOVNGatewayScheduler(base.BaseTestCase):
def setUp(self):
super(TestOVNGatewayScheduler, self).setUp()
# Overwritten by derived classes
self.l3_scheduler = None
# Used for unit tests
self.new_router_name = 'router_new'
self.fake_chassis_router_mappings = {
'None': {'Chassis': [],
'Routers': {'r1': ovn_const.OVN_GATEWAY_INVALID_CHASSIS}},
'Multiple1': {'Chassis': ['hv1', 'hv2'],
'Routers': {'r1': 'hv1', 'r2': 'hv2', 'r3': 'hv1'}},
'Multiple2': {'Chassis': ['hv1', 'hv2', 'hv3'],
'Routers': {'r1': 'hv1', 'r2': 'hv1', 'r3': 'hv1'}},
'Multiple3': {'Chassis': ['hv1', 'hv2', 'hv3'],
'Routers': {'r1': 'hv3', 'r2': 'hv2', 'r3': 'hv2'}}
}
# Determine the chassis to router list bindings
for details in six.itervalues(self.fake_chassis_router_mappings):
self.assertNotIn(self.new_router_name,
six.iterkeys(details['Routers']))
details.setdefault('Chassis_Bindings', {})
for chassis in details['Chassis']:
details['Chassis_Bindings'].setdefault(chassis, [])
for router, chassis in six.iteritems(details['Routers']):
if chassis in six.iterkeys(details['Chassis_Bindings']):
details['Chassis_Bindings'][chassis].append(router)
def select(self, chassis_router_mapping, router_name):
nb_idl = FakeOVNGatewaySchedulerNbOvnIdl(chassis_router_mapping,
router_name)
sb_idl = FakeOVNGatewaySchedulerSbOvnIdl(chassis_router_mapping)
return self.l3_scheduler.select(nb_idl, sb_idl, router_name)
class OVNGatewayChanceScheduler(TestOVNGatewayScheduler):
def setUp(self):
super(OVNGatewayChanceScheduler, self).setUp()
self.l3_scheduler = l3_ovn_scheduler.OVNGatewayChanceScheduler()
def test_no_chassis_available_for_existing_router(self):
mapping = self.fake_chassis_router_mappings['None']
router_name = random.choice(list(mapping['Routers'].keys()))
chassis = self.select(mapping, router_name)
self.assertEqual(ovn_const.OVN_GATEWAY_INVALID_CHASSIS, chassis)
def test_no_chassis_available_for_new_router(self):
mapping = self.fake_chassis_router_mappings['None']
router_name = self.new_router_name
chassis = self.select(mapping, router_name)
self.assertEqual(ovn_const.OVN_GATEWAY_INVALID_CHASSIS, chassis)
def test_random_chassis_available_for_new_router(self):
mapping = self.fake_chassis_router_mappings['Multiple1']
router_name = self.new_router_name
chassis = self.select(mapping, router_name)
self.assertIn(chassis, mapping.get('Chassis'))
def test_existing_chassis_available_for_existing_router(self):
mapping = self.fake_chassis_router_mappings['Multiple1']
router_name = random.choice(list(mapping['Routers'].keys()))
chassis = self.select(mapping, router_name)
self.assertEqual(mapping['Routers'][router_name], chassis)
class OVNGatewayLeastLoadedScheduler(TestOVNGatewayScheduler):
def setUp(self):
super(OVNGatewayLeastLoadedScheduler, self).setUp()
self.l3_scheduler = l3_ovn_scheduler.OVNGatewayLeastLoadedScheduler()
def test_no_chassis_available_for_existing_router(self):
mapping = self.fake_chassis_router_mappings['None']
router_name = random.choice(list(mapping['Routers'].keys()))
chassis = self.select(mapping, router_name)
self.assertEqual(ovn_const.OVN_GATEWAY_INVALID_CHASSIS, chassis)
def test_no_chassis_available_for_new_router(self):
mapping = self.fake_chassis_router_mappings['None']
router_name = self.new_router_name
chassis = self.select(mapping, router_name)
self.assertEqual(ovn_const.OVN_GATEWAY_INVALID_CHASSIS, chassis)
def test_least_loaded_chassis_available_for_new_router1(self):
mapping = self.fake_chassis_router_mappings['Multiple1']
router_name = self.new_router_name
chassis = self.select(mapping, router_name)
self.assertIn(chassis, mapping.get('Chassis'))
self.assertEqual('hv2', chassis)
def test_least_loaded_chassis_available_for_new_router2(self):
mapping = self.fake_chassis_router_mappings['Multiple2']
router_name = self.new_router_name
chassis = self.select(mapping, router_name)
self.assertNotEqual(chassis, 'hv1')
self.assertIn(chassis, ['hv2', 'hv3'])
def test_least_loaded_chassis_available_for_new_router3(self):
mapping = self.fake_chassis_router_mappings['Multiple3']
router_name = self.new_router_name
chassis = self.select(mapping, router_name)
self.assertIn(chassis, mapping.get('Chassis'))
self.assertEqual('hv1', chassis)
def test_existing_chassis_available_for_existing_router(self):
mapping = self.fake_chassis_router_mappings['Multiple1']
router_name = random.choice(list(mapping['Routers'].keys()))
chassis = self.select(mapping, router_name)
self.assertEqual(mapping['Routers'][router_name], chassis)
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