741dc1599a
Change the method's returning from a dictionary {host: HostState}
to an iterator for HostState, because the only caller of the method
(in filter_scheduler.py) is not interested in its key.
Change-Id: I84f649795a422e392a4c0d555c6cb29a01fae2d9
104 lines
3.4 KiB
Python
104 lines
3.4 KiB
Python
# Copyright 2011 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 Least Cost functions.
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"""
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from nova import context
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from nova.scheduler import host_manager
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from nova.scheduler import least_cost
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from nova import test
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from nova.tests.scheduler import fakes
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def offset(hostinfo, options):
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return hostinfo.free_ram_mb + 10000
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def scale(hostinfo, options):
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return hostinfo.free_ram_mb * 2
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class LeastCostTestCase(test.TestCase):
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def setUp(self):
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super(LeastCostTestCase, self).setUp()
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self.flags(reserved_host_disk_mb=0, reserved_host_memory_mb=0)
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self.host_manager = fakes.FakeHostManager()
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def _get_all_hosts(self):
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ctxt = context.get_admin_context()
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fakes.mox_host_manager_db_calls(self.mox, ctxt)
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self.mox.ReplayAll()
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host_states = self.host_manager.get_all_host_states(ctxt,
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'compute')
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self.mox.VerifyAll()
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self.mox.ResetAll()
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return host_states
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def test_weighted_sum_happy_day(self):
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fn_tuples = [(1.0, offset), (1.0, scale)]
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hostinfo_list = self._get_all_hosts()
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# host1: free_ram_mb=512
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# host2: free_ram_mb=1024
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# host3: free_ram_mb=3072
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# host4: free_ram_mb=8192
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# [offset, scale]=
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# [10512, 11024, 13072, 18192]
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# [1024, 2048, 6144, 16384]
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# adjusted [ 1.0 * x + 1.0 * y] =
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# [11536, 13072, 19216, 34576]
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# so, host1 should win:
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options = {}
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weighted_host = least_cost.weighted_sum(fn_tuples, hostinfo_list,
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options)
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self.assertEqual(weighted_host.weight, 11536)
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self.assertEqual(weighted_host.host_state.host, 'host1')
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def test_weighted_sum_single_function(self):
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fn_tuples = [(1.0, offset), ]
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hostinfo_list = self._get_all_hosts()
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# host1: free_ram_mb=0
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# host2: free_ram_mb=1536
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# host3: free_ram_mb=3072
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# host4: free_ram_mb=8192
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# [offset, ]=
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# [10512, 11024, 13072, 18192]
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# so, host1 should win:
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options = {}
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weighted_host = least_cost.weighted_sum(fn_tuples, hostinfo_list,
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options)
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self.assertEqual(weighted_host.weight, 10512)
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self.assertEqual(weighted_host.host_state.host, 'host1')
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class TestWeightedHost(test.TestCase):
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def test_dict_conversion_without_host_state(self):
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host = least_cost.WeightedHost('someweight')
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expected = {'weight': 'someweight'}
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self.assertDictMatch(host.to_dict(), expected)
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def test_dict_conversion_with_host_state(self):
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host_state = host_manager.HostState('somehost', 'sometopic')
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host = least_cost.WeightedHost('someweight', host_state)
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expected = {'weight': 'someweight',
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'host': 'somehost'}
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self.assertDictMatch(host.to_dict(), expected)
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