102 lines
4.0 KiB
Python
102 lines
4.0 KiB
Python
# Copyright 2013 eBay Inc.
|
|
#
|
|
# All Rights Reserved.
|
|
#
|
|
# 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.
|
|
"""
|
|
Tests For Allocated Capacity Weigher.
|
|
"""
|
|
|
|
import mock
|
|
|
|
from cinder.common import constants
|
|
from cinder import context
|
|
from cinder.scheduler import weights
|
|
from cinder import test
|
|
from cinder.tests.unit.scheduler import fakes
|
|
from cinder.volume import utils
|
|
|
|
|
|
class AllocatedCapacityWeigherTestCase(test.TestCase):
|
|
def setUp(self):
|
|
super(AllocatedCapacityWeigherTestCase, self).setUp()
|
|
self.host_manager = fakes.FakeHostManager()
|
|
self.weight_handler = weights.OrderedHostWeightHandler(
|
|
'cinder.scheduler.weights')
|
|
|
|
def _get_weighed_host(self, hosts, weight_properties=None):
|
|
if weight_properties is None:
|
|
weight_properties = {}
|
|
return self.weight_handler.get_weighed_objects(
|
|
[weights.capacity.AllocatedCapacityWeigher], hosts,
|
|
weight_properties)[0]
|
|
|
|
@mock.patch('cinder.db.sqlalchemy.api.service_get_all')
|
|
def _get_all_backends(self, _mock_service_get_all, disabled=False):
|
|
ctxt = context.get_admin_context()
|
|
fakes.mock_host_manager_db_calls(_mock_service_get_all,
|
|
disabled=disabled)
|
|
host_states = self.host_manager.get_all_backend_states(ctxt)
|
|
_mock_service_get_all.assert_called_once_with(
|
|
ctxt,
|
|
None, # backend_match_level
|
|
topic=constants.VOLUME_TOPIC, frozen=False, disabled=disabled)
|
|
return host_states
|
|
|
|
def test_default_of_spreading_first(self):
|
|
hostinfo_list = self._get_all_backends()
|
|
|
|
# host1: allocated_capacity_gb=0, weight=0 Norm=0.0
|
|
# host2: allocated_capacity_gb=1748, weight=-1748
|
|
# host3: allocated_capacity_gb=256, weight=-256
|
|
# host4: allocated_capacity_gb=1848, weight=-1848 Norm=-1.0
|
|
# host5: allocated_capacity_gb=1548, weight=-1540
|
|
|
|
# so, host1 should win:
|
|
weighed_host = self._get_weighed_host(hostinfo_list)
|
|
self.assertEqual(0.0, weighed_host.weight)
|
|
self.assertEqual(
|
|
'host1', utils.extract_host(weighed_host.obj.host))
|
|
|
|
def test_capacity_weight_multiplier1(self):
|
|
self.flags(allocated_capacity_weight_multiplier=1.0)
|
|
hostinfo_list = self._get_all_backends()
|
|
|
|
# host1: allocated_capacity_gb=0, weight=0 Norm=0.0
|
|
# host2: allocated_capacity_gb=1748, weight=1748
|
|
# host3: allocated_capacity_gb=256, weight=256
|
|
# host4: allocated_capacity_gb=1848, weight=1848 Norm=1.0
|
|
# host5: allocated_capacity_gb=1548, weight=1540
|
|
|
|
# so, host4 should win:
|
|
weighed_host = self._get_weighed_host(hostinfo_list)
|
|
self.assertEqual(1.0, weighed_host.weight)
|
|
self.assertEqual(
|
|
'host4', utils.extract_host(weighed_host.obj.host))
|
|
|
|
def test_capacity_weight_multiplier2(self):
|
|
self.flags(allocated_capacity_weight_multiplier=-2.0)
|
|
hostinfo_list = self._get_all_backends()
|
|
|
|
# host1: allocated_capacity_gb=0, weight=0 Norm=0.0
|
|
# host2: allocated_capacity_gb=1748, weight=-3496
|
|
# host3: allocated_capacity_gb=256, weight=-512
|
|
# host4: allocated_capacity_gb=1848, weight=-3696 Norm=-2.0
|
|
# host5: allocated_capacity_gb=1548, weight=-3080
|
|
|
|
# so, host1 should win:
|
|
weighed_host = self._get_weighed_host(hostinfo_list)
|
|
self.assertEqual(0.0, weighed_host.weight)
|
|
self.assertEqual(
|
|
'host1', utils.extract_host(weighed_host.obj.host))
|