70a2bd2fb1
The folsom behavior was to skip filtering when using force_hosts. This is useful for administrative tools. For example, one can verify a disabled node by launching instances on it even though the scheduler will ignore it for normal requests. This behavior was accidentally changed in commit 0d9ce8319d75bfbd69fe4e0759aeed38e6054e56 Change-Id: Ib529cf8eccc4d8abe67873cfc0467f6db9d4b522
329 lines
13 KiB
Python
329 lines
13 KiB
Python
# Copyright (c) 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 HostManager
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"""
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from nova.compute import task_states
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from nova.compute import vm_states
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from nova import db
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from nova import exception
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from nova.openstack.common import timeutils
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from nova.scheduler import filters
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from nova.scheduler import host_manager
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from nova import test
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from nova.tests import matchers
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from nova.tests.scheduler import fakes
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class FakeFilterClass1(filters.BaseHostFilter):
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def host_passes(self, host_state, filter_properties):
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pass
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class FakeFilterClass2(filters.BaseHostFilter):
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def host_passes(self, host_state, filter_properties):
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pass
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class HostManagerTestCase(test.TestCase):
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"""Test case for HostManager class."""
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def setUp(self):
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super(HostManagerTestCase, self).setUp()
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self.host_manager = host_manager.HostManager()
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self.fake_hosts = [host_manager.HostState('fake_host%s' % x,
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'fake-node') for x in xrange(1, 5)]
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def tearDown(self):
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timeutils.clear_time_override()
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super(HostManagerTestCase, self).tearDown()
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def test_choose_host_filters_not_found(self):
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self.flags(scheduler_default_filters='FakeFilterClass3')
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self.host_manager.filter_classes = [FakeFilterClass1,
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FakeFilterClass2]
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self.assertRaises(exception.SchedulerHostFilterNotFound,
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self.host_manager._choose_host_filters, None)
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def test_choose_host_filters(self):
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self.flags(scheduler_default_filters=['FakeFilterClass2'])
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self.host_manager.filter_classes = [FakeFilterClass1,
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FakeFilterClass2]
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# Test we returns 1 correct function
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filter_classes = self.host_manager._choose_host_filters(None)
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self.assertEqual(len(filter_classes), 1)
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self.assertEqual(filter_classes[0].__name__, 'FakeFilterClass2')
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def _mock_get_filtered_hosts(self, info, specified_filters=None):
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self.mox.StubOutWithMock(self.host_manager, '_choose_host_filters')
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info['got_objs'] = []
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info['got_fprops'] = []
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def fake_filter_one(_self, obj, filter_props):
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info['got_objs'].append(obj)
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info['got_fprops'].append(filter_props)
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return True
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self.stubs.Set(FakeFilterClass1, '_filter_one', fake_filter_one)
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self.host_manager._choose_host_filters(specified_filters).AndReturn(
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[FakeFilterClass1])
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def _verify_result(self, info, result, filters=True):
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for x in info['got_fprops']:
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self.assertEqual(x, info['expected_fprops'])
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if filters:
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self.assertEqual(set(info['expected_objs']), set(info['got_objs']))
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self.assertEqual(set(info['expected_objs']), set(result))
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def test_get_filtered_hosts(self):
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fake_properties = {'moo': 1, 'cow': 2}
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info = {'expected_objs': self.fake_hosts,
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'expected_fprops': fake_properties}
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self._mock_get_filtered_hosts(info)
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self.mox.ReplayAll()
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result = self.host_manager.get_filtered_hosts(self.fake_hosts,
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fake_properties)
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self._verify_result(info, result)
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def test_get_filtered_hosts_with_specificed_filters(self):
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fake_properties = {'moo': 1, 'cow': 2}
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specified_filters = ['FakeFilterClass1', 'FakeFilterClass2']
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info = {'expected_objs': self.fake_hosts,
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'expected_fprops': fake_properties}
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self._mock_get_filtered_hosts(info, specified_filters)
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self.mox.ReplayAll()
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result = self.host_manager.get_filtered_hosts(self.fake_hosts,
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fake_properties, filter_class_names=specified_filters)
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self._verify_result(info, result)
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def test_get_filtered_hosts_with_ignore(self):
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fake_properties = {'ignore_hosts': ['fake_host1', 'fake_host3',
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'fake_host5']}
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# [1] and [3] are host2 and host4
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info = {'expected_objs': [self.fake_hosts[1], self.fake_hosts[3]],
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'expected_fprops': fake_properties}
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self._mock_get_filtered_hosts(info)
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self.mox.ReplayAll()
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result = self.host_manager.get_filtered_hosts(self.fake_hosts,
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fake_properties)
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self._verify_result(info, result)
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def test_get_filtered_hosts_with_force_hosts(self):
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fake_properties = {'force_hosts': ['fake_host1', 'fake_host3',
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'fake_host5']}
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# [0] and [2] are host1 and host3
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info = {'expected_objs': [self.fake_hosts[0], self.fake_hosts[2]],
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'expected_fprops': fake_properties}
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self._mock_get_filtered_hosts(info)
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self.mox.ReplayAll()
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result = self.host_manager.get_filtered_hosts(self.fake_hosts,
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fake_properties)
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self._verify_result(info, result, False)
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def test_get_filtered_hosts_with_no_matching_force_hosts(self):
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fake_properties = {'force_hosts': ['fake_host5', 'fake_host6']}
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info = {'expected_objs': [],
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'expected_fprops': fake_properties}
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self._mock_get_filtered_hosts(info)
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self.mox.ReplayAll()
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result = self.host_manager.get_filtered_hosts(self.fake_hosts,
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fake_properties)
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self._verify_result(info, result, False)
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def test_get_filtered_hosts_with_ignore_and_force(self):
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# Ensure ignore_hosts processed before force_hosts in host filters.
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fake_properties = {'force_hosts': ['fake_host3', 'fake_host1'],
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'ignore_hosts': ['fake_host1']}
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# only fake_host3 should be left.
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info = {'expected_objs': [self.fake_hosts[2]],
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'expected_fprops': fake_properties}
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self._mock_get_filtered_hosts(info)
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self.mox.ReplayAll()
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result = self.host_manager.get_filtered_hosts(self.fake_hosts,
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fake_properties)
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self._verify_result(info, result, False)
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def test_update_service_capabilities(self):
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service_states = self.host_manager.service_states
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self.assertEqual(len(service_states.keys()), 0)
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self.mox.StubOutWithMock(timeutils, 'utcnow')
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timeutils.utcnow().AndReturn(31337)
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timeutils.utcnow().AndReturn(31339)
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host1_compute_capabs = dict(free_memory=1234, host_memory=5678,
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timestamp=1, hypervisor_hostname='node1')
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host2_compute_capabs = dict(free_memory=8756, timestamp=1,
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hypervisor_hostname='node2')
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self.mox.ReplayAll()
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self.host_manager.update_service_capabilities('compute', 'host1',
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host1_compute_capabs)
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self.host_manager.update_service_capabilities('compute', 'host2',
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host2_compute_capabs)
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# Make sure original dictionary wasn't copied
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self.assertEqual(host1_compute_capabs['timestamp'], 1)
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host1_compute_capabs['timestamp'] = 31337
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host2_compute_capabs['timestamp'] = 31339
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expected = {('host1', 'node1'): host1_compute_capabs,
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('host2', 'node2'): host2_compute_capabs}
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self.assertThat(service_states, matchers.DictMatches(expected))
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def test_update_service_capabilities_node_key(self):
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service_states = self.host_manager.service_states
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self.assertThat(service_states, matchers.DictMatches({}))
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host1_cap = {'hypervisor_hostname': 'host1-hvhn'}
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host2_cap = {}
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timeutils.set_time_override(31337)
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self.host_manager.update_service_capabilities('compute', 'host1',
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host1_cap)
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timeutils.set_time_override(31338)
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self.host_manager.update_service_capabilities('compute', 'host2',
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host2_cap)
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host1_cap['timestamp'] = 31337
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host2_cap['timestamp'] = 31338
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expected = {('host1', 'host1-hvhn'): host1_cap,
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('host2', None): host2_cap}
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self.assertThat(service_states, matchers.DictMatches(expected))
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def test_get_all_host_states(self):
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context = 'fake_context'
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self.mox.StubOutWithMock(db, 'compute_node_get_all')
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self.mox.StubOutWithMock(host_manager.LOG, 'warn')
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db.compute_node_get_all(context).AndReturn(fakes.COMPUTE_NODES)
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# Invalid service
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host_manager.LOG.warn("No service for compute ID 5")
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self.mox.ReplayAll()
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self.host_manager.get_all_host_states(context)
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host_states_map = self.host_manager.host_state_map
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self.assertEqual(len(host_states_map), 4)
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# Check that .service is set properly
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for i in xrange(4):
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compute_node = fakes.COMPUTE_NODES[i]
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host = compute_node['service']['host']
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node = compute_node['hypervisor_hostname']
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state_key = (host, node)
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self.assertEqual(host_states_map[state_key].service,
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compute_node['service'])
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self.assertEqual(host_states_map[('host1', 'node1')].free_ram_mb,
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512)
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# 511GB
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self.assertEqual(host_states_map[('host1', 'node1')].free_disk_mb,
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524288)
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self.assertEqual(host_states_map[('host2', 'node2')].free_ram_mb,
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1024)
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# 1023GB
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self.assertEqual(host_states_map[('host2', 'node2')].free_disk_mb,
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1048576)
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self.assertEqual(host_states_map[('host3', 'node3')].free_ram_mb,
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3072)
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# 3071GB
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self.assertEqual(host_states_map[('host3', 'node3')].free_disk_mb,
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3145728)
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self.assertEqual(host_states_map[('host4', 'node4')].free_ram_mb,
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8192)
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# 8191GB
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self.assertEqual(host_states_map[('host4', 'node4')].free_disk_mb,
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8388608)
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class HostStateTestCase(test.TestCase):
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"""Test case for HostState class."""
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# update_from_compute_node() and consume_from_instance() are tested
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# in HostManagerTestCase.test_get_all_host_states()
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def test_stat_consumption_from_compute_node(self):
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stats = [
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dict(key='num_instances', value='5'),
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dict(key='num_proj_12345', value='3'),
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dict(key='num_proj_23456', value='1'),
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dict(key='num_vm_%s' % vm_states.BUILDING, value='2'),
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dict(key='num_vm_%s' % vm_states.SUSPENDED, value='1'),
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dict(key='num_task_%s' % task_states.RESIZE_MIGRATING, value='1'),
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dict(key='num_task_%s' % task_states.MIGRATING, value='2'),
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dict(key='num_os_type_linux', value='4'),
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dict(key='num_os_type_windoze', value='1'),
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dict(key='io_workload', value='42'),
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]
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compute = dict(stats=stats, memory_mb=0, free_disk_gb=0, local_gb=0,
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local_gb_used=0, free_ram_mb=0, vcpus=0, vcpus_used=0,
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updated_at=None)
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host = host_manager.HostState("fakehost", "fakenode")
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host.update_from_compute_node(compute)
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self.assertEqual(5, host.num_instances)
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self.assertEqual(3, host.num_instances_by_project['12345'])
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self.assertEqual(1, host.num_instances_by_project['23456'])
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self.assertEqual(2, host.vm_states[vm_states.BUILDING])
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self.assertEqual(1, host.vm_states[vm_states.SUSPENDED])
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self.assertEqual(1, host.task_states[task_states.RESIZE_MIGRATING])
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self.assertEqual(2, host.task_states[task_states.MIGRATING])
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self.assertEqual(4, host.num_instances_by_os_type['linux'])
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self.assertEqual(1, host.num_instances_by_os_type['windoze'])
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self.assertEqual(42, host.num_io_ops)
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def test_stat_consumption_from_instance(self):
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host = host_manager.HostState("fakehost", "fakenode")
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instance = dict(root_gb=0, ephemeral_gb=0, memory_mb=0, vcpus=0,
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project_id='12345', vm_state=vm_states.BUILDING,
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task_state=task_states.SCHEDULING, os_type='Linux')
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host.consume_from_instance(instance)
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instance = dict(root_gb=0, ephemeral_gb=0, memory_mb=0, vcpus=0,
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project_id='12345', vm_state=vm_states.PAUSED,
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task_state=None, os_type='Linux')
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host.consume_from_instance(instance)
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self.assertEqual(2, host.num_instances)
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self.assertEqual(2, host.num_instances_by_project['12345'])
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self.assertEqual(1, host.vm_states[vm_states.BUILDING])
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self.assertEqual(1, host.vm_states[vm_states.PAUSED])
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self.assertEqual(1, host.task_states[task_states.SCHEDULING])
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self.assertEqual(1, host.task_states[None])
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self.assertEqual(2, host.num_instances_by_os_type['Linux'])
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self.assertEqual(1, host.num_io_ops)
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