97 lines
4.4 KiB
Python
97 lines
4.4 KiB
Python
# 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.scheduler.filters import ram_filter
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from nova import test
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from nova.tests.unit.scheduler import fakes
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class TestRamFilter(test.NoDBTestCase):
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def setUp(self):
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super(TestRamFilter, self).setUp()
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self.filt_cls = ram_filter.RamFilter()
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def test_ram_filter_fails_on_memory(self):
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filter_properties = {'instance_type': {'memory_mb': 1024}}
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host = fakes.FakeHostState('host1', 'node1',
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{'free_ram_mb': 1023, 'total_usable_ram_mb': 1024,
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'ram_allocation_ratio': 1.0})
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self.assertFalse(self.filt_cls.host_passes(host, filter_properties))
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def test_ram_filter_passes(self):
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filter_properties = {'instance_type': {'memory_mb': 1024}}
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host = fakes.FakeHostState('host1', 'node1',
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{'free_ram_mb': 1024, 'total_usable_ram_mb': 1024,
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'ram_allocation_ratio': 1.0})
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self.assertTrue(self.filt_cls.host_passes(host, filter_properties))
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def test_ram_filter_oversubscribe(self):
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filter_properties = {'instance_type': {'memory_mb': 1024}}
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host = fakes.FakeHostState('host1', 'node1',
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{'free_ram_mb': -1024, 'total_usable_ram_mb': 2048,
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'ram_allocation_ratio': 2.0})
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self.assertTrue(self.filt_cls.host_passes(host, filter_properties))
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self.assertEqual(2048 * 2.0, host.limits['memory_mb'])
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def test_ram_filter_oversubscribe_singe_instance_fails(self):
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filter_properties = {'instance_type': {'memory_mb': 1024}}
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host = fakes.FakeHostState('host1', 'node1',
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{'free_ram_mb': 512, 'total_usable_ram_mb': 512,
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'ram_allocation_ratio': 2.0})
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self.assertFalse(self.filt_cls.host_passes(host, filter_properties))
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@mock.patch('nova.scheduler.filters.utils.aggregate_values_from_key')
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class TestAggregateRamFilter(test.NoDBTestCase):
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def setUp(self):
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super(TestAggregateRamFilter, self).setUp()
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self.filt_cls = ram_filter.AggregateRamFilter()
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def test_aggregate_ram_filter_value_error(self, agg_mock):
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filter_properties = {'context': mock.sentinel.ctx,
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'instance_type': {'memory_mb': 1024}}
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host = fakes.FakeHostState('host1', 'node1',
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{'free_ram_mb': 1024, 'total_usable_ram_mb': 1024,
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'ram_allocation_ratio': 1.0})
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agg_mock.return_value = set(['XXX'])
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self.assertTrue(self.filt_cls.host_passes(host, filter_properties))
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self.assertEqual(1024 * 1.0, host.limits['memory_mb'])
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def test_aggregate_ram_filter_default_value(self, agg_mock):
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filter_properties = {'context': mock.sentinel.ctx,
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'instance_type': {'memory_mb': 1024}}
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host = fakes.FakeHostState('host1', 'node1',
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{'free_ram_mb': 1023, 'total_usable_ram_mb': 1024,
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'ram_allocation_ratio': 1.0})
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# False: fallback to default flag w/o aggregates
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agg_mock.return_value = set()
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self.assertFalse(self.filt_cls.host_passes(host, filter_properties))
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agg_mock.return_value = set(['2.0'])
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# True: use ratio from aggregates
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self.assertTrue(self.filt_cls.host_passes(host, filter_properties))
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self.assertEqual(1024 * 2.0, host.limits['memory_mb'])
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def test_aggregate_ram_filter_conflict_values(self, agg_mock):
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filter_properties = {'context': mock.sentinel.ctx,
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'instance_type': {'memory_mb': 1024}}
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host = fakes.FakeHostState('host1', 'node1',
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{'free_ram_mb': 1023, 'total_usable_ram_mb': 1024,
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'ram_allocation_ratio': 1.0})
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agg_mock.return_value = set(['1.5', '2.0'])
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# use the minimum ratio from aggregates
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self.assertTrue(self.filt_cls.host_passes(host, filter_properties))
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self.assertEqual(1024 * 1.5, host.limits['memory_mb'])
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