98 lines
3.8 KiB
Python
98 lines
3.8 KiB
Python
# Copyright 2013 eBay Inc.
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#
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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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"""
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Tests For Allocated Capacity Weigher.
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"""
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import mock
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from oslo_config import cfg
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from cinder import context
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from cinder.openstack.common.scheduler.weights import HostWeightHandler
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from cinder.scheduler.weights.capacity import AllocatedCapacityWeigher as ACW
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from cinder import test
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from cinder.tests.scheduler import fakes
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from cinder.volume import utils
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CONF = cfg.CONF
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class AllocatedCapacityWeigherTestCase(test.TestCase):
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def setUp(self):
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super(AllocatedCapacityWeigherTestCase, self).setUp()
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self.host_manager = fakes.FakeHostManager()
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self.weight_handler = HostWeightHandler('cinder.scheduler.weights')
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def _get_weighed_host(self, hosts, weight_properties=None):
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if weight_properties is None:
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weight_properties = {}
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return self.weight_handler.get_weighed_objects([ACW], hosts,
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weight_properties)[0]
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@mock.patch('cinder.db.sqlalchemy.api.service_get_all_by_topic')
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def _get_all_hosts(self, _mock_service_get_all_by_topic, disabled=False):
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ctxt = context.get_admin_context()
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fakes.mock_host_manager_db_calls(_mock_service_get_all_by_topic,
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disabled=disabled)
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host_states = self.host_manager.get_all_host_states(ctxt)
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_mock_service_get_all_by_topic.assert_called_once_with(
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ctxt, CONF.volume_topic, disabled=disabled)
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return host_states
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def test_default_of_spreading_first(self):
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hostinfo_list = self._get_all_hosts()
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# host1: allocated_capacity_gb=0, weight=0
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# host2: allocated_capacity_gb=1748, weight=-1748
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# host3: allocated_capacity_gb=256, weight=-256
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# host4: allocated_capacity_gb=1848, weight=-1848
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# so, host1 should win:
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weighed_host = self._get_weighed_host(hostinfo_list)
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self.assertEqual(weighed_host.weight, 0)
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self.assertEqual(
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utils.extract_host(weighed_host.obj.host), 'host1')
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def test_capacity_weight_multiplier1(self):
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self.flags(allocated_capacity_weight_multiplier=1.0)
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hostinfo_list = self._get_all_hosts()
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# host1: allocated_capacity_gb=0, weight=0
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# host2: allocated_capacity_gb=1748, weight=1748
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# host3: allocated_capacity_gb=256, weight=256
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# host4: allocated_capacity_gb=1848, weight=1848
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# so, host4 should win:
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weighed_host = self._get_weighed_host(hostinfo_list)
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self.assertEqual(weighed_host.weight, 1848.0)
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self.assertEqual(
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utils.extract_host(weighed_host.obj.host), 'host4')
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def test_capacity_weight_multiplier2(self):
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self.flags(allocated_capacity_weight_multiplier=-2.0)
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hostinfo_list = self._get_all_hosts()
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# host1: allocated_capacity_gb=0, weight=0
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# host2: allocated_capacity_gb=1748, weight=-3496
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# host3: allocated_capacity_gb=256, weight=-512
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# host4: allocated_capacity_gb=1848, weight=-3696
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# so, host1 should win:
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weighed_host = self._get_weighed_host(hostinfo_list)
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self.assertEqual(weighed_host.weight, 0)
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self.assertEqual(
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utils.extract_host(weighed_host.obj.host), 'host1')
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