160 lines
6.3 KiB
Python
160 lines
6.3 KiB
Python
# Copyright (c) 2015 Ericsson AB
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# All Rights Reserved.
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#
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# Licensed under the Apache License, Version 2.0 (the "License"); you may
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# not use this file except in compliance with the License. You may obtain
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# a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
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# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
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# License for the specific language governing permissions and limitations
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# under the License.
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import mock
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from nova import objects
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from nova.scheduler import weights
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from nova.scheduler.weights import affinity
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from nova import test
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from nova.tests.unit.scheduler import fakes
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class SoftWeigherTestBase(test.NoDBTestCase):
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def setUp(self):
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super(SoftWeigherTestBase, self).setUp()
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self.weight_handler = weights.HostWeightHandler()
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self.weighers = []
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def _get_weighed_host(self, hosts, policy):
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request_spec = objects.RequestSpec(
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instance_group=objects.InstanceGroup(
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policy=policy,
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members=['member1',
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'member2',
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'member3',
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'member4',
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'member5',
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'member6',
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'member7']))
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return self.weight_handler.get_weighed_objects(self.weighers,
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hosts,
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request_spec)[0]
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def _get_all_hosts(self):
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host_values = [
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('host1', 'node1', {'instances': {
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'member1': mock.sentinel,
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'instance13': mock.sentinel
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}}),
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('host2', 'node2', {'instances': {
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'member2': mock.sentinel,
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'member3': mock.sentinel,
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'member4': mock.sentinel,
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'member5': mock.sentinel,
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'instance14': mock.sentinel
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}}),
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('host3', 'node3', {'instances': {
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'instance15': mock.sentinel
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}}),
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('host4', 'node4', {'instances': {
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'member6': mock.sentinel,
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'member7': mock.sentinel,
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'instance16': mock.sentinel
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}})]
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return [fakes.FakeHostState(host, node, values)
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for host, node, values in host_values]
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def _do_test(self, policy, expected_weight,
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expected_host):
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hostinfo_list = self._get_all_hosts()
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weighed_host = self._get_weighed_host(hostinfo_list,
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policy)
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self.assertEqual(expected_weight, weighed_host.weight)
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if expected_host:
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self.assertEqual(expected_host, weighed_host.obj.host)
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class SoftAffinityWeigherTestCase(SoftWeigherTestBase):
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def setUp(self):
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super(SoftAffinityWeigherTestCase, self).setUp()
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self.weighers = [affinity.ServerGroupSoftAffinityWeigher()]
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def test_soft_affinity_weight_multiplier_by_default(self):
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self._do_test(policy='soft-affinity',
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expected_weight=1.0,
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expected_host='host2')
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def test_soft_affinity_weight_multiplier_zero_value(self):
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# We do not know the host, all have same weight.
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self.flags(soft_affinity_weight_multiplier=0.0,
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group='filter_scheduler')
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self._do_test(policy='soft-affinity',
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expected_weight=0.0,
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expected_host=None)
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def test_soft_affinity_weight_multiplier_positive_value(self):
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self.flags(soft_affinity_weight_multiplier=2.0,
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group='filter_scheduler')
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self._do_test(policy='soft-affinity',
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expected_weight=2.0,
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expected_host='host2')
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@mock.patch.object(affinity, 'LOG')
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def test_soft_affinity_weight_multiplier_negative_value(self, mock_log):
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self.flags(soft_affinity_weight_multiplier=-1.0,
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group='filter_scheduler')
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self._do_test(policy='soft-affinity',
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expected_weight=0.0,
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expected_host='host3')
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# call twice and assert that only one warning is emitted
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self._do_test(policy='soft-affinity',
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expected_weight=0.0,
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expected_host='host3')
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self.assertEqual(1, mock_log.warning.call_count)
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class SoftAntiAffinityWeigherTestCase(SoftWeigherTestBase):
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def setUp(self):
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super(SoftAntiAffinityWeigherTestCase, self).setUp()
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self.weighers = [affinity.ServerGroupSoftAntiAffinityWeigher()]
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def test_soft_anti_affinity_weight_multiplier_by_default(self):
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self._do_test(policy='soft-anti-affinity',
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expected_weight=1.0,
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expected_host='host3')
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def test_soft_anti_affinity_weight_multiplier_zero_value(self):
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# We do not know the host, all have same weight.
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self.flags(soft_anti_affinity_weight_multiplier=0.0,
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group='filter_scheduler')
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self._do_test(policy='soft-anti-affinity',
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expected_weight=0.0,
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expected_host=None)
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def test_soft_anti_affinity_weight_multiplier_positive_value(self):
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self.flags(soft_anti_affinity_weight_multiplier=2.0,
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group='filter_scheduler')
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self._do_test(policy='soft-anti-affinity',
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expected_weight=2.0,
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expected_host='host3')
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@mock.patch.object(affinity, 'LOG')
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def test_soft_anti_affinity_weight_multiplier_negative_value(self,
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mock_log):
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self.flags(soft_anti_affinity_weight_multiplier=-1.0,
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group='filter_scheduler')
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self._do_test(policy='soft-anti-affinity',
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expected_weight=0.0,
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expected_host='host2')
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# call twice and assert that only one warning is emitted
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self._do_test(policy='soft-anti-affinity',
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expected_weight=0.0,
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expected_host='host2')
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self.assertEqual(1, mock_log.warning.call_count)
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