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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
from nova.scheduler.filters import core_filter
from nova import test
from nova.tests.unit.scheduler import fakes
class TestCoreFilter(test.NoDBTestCase):
def test_core_filter_passes(self):
self.filt_cls = core_filter.CoreFilter()
filter_properties = {'instance_type': {'vcpus': 1}}
self.flags(cpu_allocation_ratio=2)
host = fakes.FakeHostState('host1', 'node1',
{'vcpus_total': 4, 'vcpus_used': 7})
self.assertTrue(self.filt_cls.host_passes(host, filter_properties))
def test_core_filter_fails_safe(self):
self.filt_cls = core_filter.CoreFilter()
filter_properties = {'instance_type': {'vcpus': 1}}
host = fakes.FakeHostState('host1', 'node1', {})
self.assertTrue(self.filt_cls.host_passes(host, filter_properties))
def test_core_filter_fails(self):
self.filt_cls = core_filter.CoreFilter()
filter_properties = {'instance_type': {'vcpus': 1}}
self.flags(cpu_allocation_ratio=2)
host = fakes.FakeHostState('host1', 'node1',
{'vcpus_total': 4, 'vcpus_used': 8})
self.assertFalse(self.filt_cls.host_passes(host, filter_properties))
@mock.patch('nova.scheduler.filters.utils.aggregate_values_from_db')
def test_aggregate_core_filter_value_error(self, agg_mock):
self.filt_cls = core_filter.AggregateCoreFilter()
filter_properties = {'context': mock.sentinel.ctx,
'instance_type': {'vcpus': 1}}
self.flags(cpu_allocation_ratio=2)
host = fakes.FakeHostState('host1', 'node1',
{'vcpus_total': 4, 'vcpus_used': 7})
agg_mock.return_value = set(['XXX'])
self.assertTrue(self.filt_cls.host_passes(host, filter_properties))
agg_mock.assert_called_once_with(mock.sentinel.ctx, 'host1',
'cpu_allocation_ratio')
self.assertEqual(4 * 2, host.limits['vcpu'])
@mock.patch('nova.scheduler.filters.utils.aggregate_values_from_db')
def test_aggregate_core_filter_default_value(self, agg_mock):
self.filt_cls = core_filter.AggregateCoreFilter()
filter_properties = {'context': mock.sentinel.ctx,
'instance_type': {'vcpus': 1}}
self.flags(cpu_allocation_ratio=2)
host = fakes.FakeHostState('host1', 'node1',
{'vcpus_total': 4, 'vcpus_used': 8})
agg_mock.return_value = set([])
# False: fallback to default flag w/o aggregates
self.assertFalse(self.filt_cls.host_passes(host, filter_properties))
agg_mock.assert_called_once_with(mock.sentinel.ctx, 'host1',
'cpu_allocation_ratio')
# True: use ratio from aggregates
agg_mock.return_value = set(['3'])
self.assertTrue(self.filt_cls.host_passes(host, filter_properties))
self.assertEqual(4 * 3, host.limits['vcpu'])
@mock.patch('nova.scheduler.filters.utils.aggregate_values_from_db')
def test_aggregate_core_filter_conflict_values(self, agg_mock):
self.filt_cls = core_filter.AggregateCoreFilter()
filter_properties = {'context': mock.sentinel.ctx,
'instance_type': {'vcpus': 1}}
self.flags(cpu_allocation_ratio=1)
host = fakes.FakeHostState('host1', 'node1',
{'vcpus_total': 4, 'vcpus_used': 8})
agg_mock.return_value = set(['2', '3'])
# use the minimum ratio from aggregates
self.assertFalse(self.filt_cls.host_passes(host, filter_properties))
self.assertEqual(4 * 2, host.limits['vcpu'])
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