96 lines
3.6 KiB
Python
96 lines
3.6 KiB
Python
# Copyright 2011-2012 OpenStack LLC.
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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 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 manila import context
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from manila.openstack.common.scheduler import weights
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from manila.scheduler.weights import capacity
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from manila import test
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from manila.tests.scheduler import fakes
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CONF = cfg.CONF
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class CapacityWeigherTestCase(test.TestCase):
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def setUp(self):
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super(CapacityWeigherTestCase, self).setUp()
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self.host_manager = fakes.FakeHostManager()
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self.weight_handler = weights.HostWeightHandler(
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'manila.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(
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[capacity.CapacityWeigher],
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hosts,
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weight_properties)[0]
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@mock.patch('manila.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_share(ctxt)
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_mock_service_get_all_by_topic.assert_called_once_with(
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ctxt, CONF.share_topic)
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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: free_capacity_gb=1024, free=1024*(1-0.1)
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# host2: free_capacity_gb=300, free=300*(1-0.1)
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# host3: free_capacity_gb=512, free=512
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# host4: free_capacity_gb=200, free=200*(1-0.05)
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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, 1.0)
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self.assertEqual(weighed_host.obj.host, 'host1')
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def test_capacity_weight_multiplier1(self):
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self.flags(capacity_weight_multiplier=-1.0)
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hostinfo_list = self._get_all_hosts()
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# host1: free_capacity_gb=1024, free=-1024*(1-0.1)
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# host2: free_capacity_gb=300, free=-300*(1-0.1)
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# host3: free_capacity_gb=512, free=-512
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# host4: free_capacity_gb=200, free=-200*(1-0.05)
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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, 0.0)
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self.assertEqual(weighed_host.obj.host, 'host4')
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def test_capacity_weight_multiplier2(self):
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self.flags(capacity_weight_multiplier=2.0)
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hostinfo_list = self._get_all_hosts()
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# host1: free_capacity_gb=1024, free=1024*(1-0.1)*2
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# host2: free_capacity_gb=300, free=300*(1-0.1)*2
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# host3: free_capacity_gb=512, free=512*2
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# host4: free_capacity_gb=200, free=200*(1-0.05)*2
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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, 2.0)
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self.assertEqual(weighed_host.obj.host, 'host1')
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