# Copyright (c) 2013 Rackspace Hosting # 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 Scheduler Utils """ import mock import six from nova.compute import flavors from nova.compute import utils as compute_utils from nova import exception from nova import objects from nova import rpc from nova.scheduler import utils as scheduler_utils from nova import test from nova.tests.unit import fake_instance from nova.tests.unit.objects import test_flavor from nova.tests import uuidsentinel as uuids class SchedulerUtilsTestCase(test.NoDBTestCase): """Test case for scheduler utils methods.""" def setUp(self): super(SchedulerUtilsTestCase, self).setUp() self.context = 'fake-context' def test_build_request_spec_without_image(self): instance = {'uuid': uuids.instance} instance_type = objects.Flavor(**test_flavor.fake_flavor) with mock.patch.object(flavors, 'extract_flavor') as mock_extract: mock_extract.return_value = instance_type request_spec = scheduler_utils.build_request_spec(self.context, None, [instance]) mock_extract.assert_called_once_with({'uuid': uuids.instance}) self.assertEqual({}, request_spec['image']) def test_build_request_spec_with_object(self): instance_type = objects.Flavor() instance = fake_instance.fake_instance_obj(self.context) with mock.patch.object(instance, 'get_flavor') as mock_get: mock_get.return_value = instance_type request_spec = scheduler_utils.build_request_spec(self.context, None, [instance]) mock_get.assert_called_once_with() self.assertIsInstance(request_spec['instance_properties'], dict) @mock.patch.object(rpc, 'get_notifier', return_value=mock.Mock()) @mock.patch.object(compute_utils, 'add_instance_fault_from_exc') @mock.patch.object(objects.Instance, 'save') def test_set_vm_state_and_notify(self, mock_save, mock_add, mock_get): expected_uuid = uuids.instance request_spec = dict(instance_properties=dict(uuid='other-uuid')) updates = dict(vm_state='fake-vm-state') service = 'fake-service' method = 'fake-method' exc_info = 'exc_info' payload = dict(request_spec=request_spec, instance_properties=request_spec.get( 'instance_properties', {}), instance_id=expected_uuid, state='fake-vm-state', method=method, reason=exc_info) event_type = '%s.%s' % (service, method) scheduler_utils.set_vm_state_and_notify(self.context, expected_uuid, service, method, updates, exc_info, request_spec) mock_save.assert_called_once_with() mock_add.assert_called_once_with(self.context, mock.ANY, exc_info, mock.ANY) self.assertIsInstance(mock_add.call_args[0][1], objects.Instance) self.assertIsInstance(mock_add.call_args[0][3], tuple) mock_get.return_value.error.assert_called_once_with(self.context, event_type, payload) def test_build_filter_properties(self): sched_hints = {'hint': ['over-there']} forced_host = 'forced-host1' forced_node = 'forced-node1' instance_type = objects.Flavor() filt_props = scheduler_utils.build_filter_properties(sched_hints, forced_host, forced_node, instance_type) self.assertEqual(sched_hints, filt_props['scheduler_hints']) self.assertEqual([forced_host], filt_props['force_hosts']) self.assertEqual([forced_node], filt_props['force_nodes']) self.assertEqual(instance_type, filt_props['instance_type']) def test_build_filter_properties_no_forced_host_no_force_node(self): sched_hints = {'hint': ['over-there']} forced_host = None forced_node = None instance_type = objects.Flavor() filt_props = scheduler_utils.build_filter_properties(sched_hints, forced_host, forced_node, instance_type) self.assertEqual(sched_hints, filt_props['scheduler_hints']) self.assertEqual(instance_type, filt_props['instance_type']) self.assertNotIn('forced_host', filt_props) self.assertNotIn('forced_node', filt_props) def _test_populate_filter_props(self, host_state_obj=True, with_retry=True, force_hosts=None, force_nodes=None): if force_hosts is None: force_hosts = [] if force_nodes is None: force_nodes = [] if with_retry: if ((len(force_hosts) == 1 and len(force_nodes) <= 1) or (len(force_nodes) == 1 and len(force_hosts) <= 1)): filter_properties = dict(force_hosts=force_hosts, force_nodes=force_nodes) elif len(force_hosts) > 1 or len(force_nodes) > 1: filter_properties = dict(retry=dict(hosts=[]), force_hosts=force_hosts, force_nodes=force_nodes) else: filter_properties = dict(retry=dict(hosts=[])) else: filter_properties = dict() if host_state_obj: class host_state(object): host = 'fake-host' nodename = 'fake-node' limits = 'fake-limits' else: host_state = dict(host='fake-host', nodename='fake-node', limits='fake-limits') scheduler_utils.populate_filter_properties(filter_properties, host_state) enable_retry_force_hosts = not force_hosts or len(force_hosts) > 1 enable_retry_force_nodes = not force_nodes or len(force_nodes) > 1 if with_retry or enable_retry_force_hosts or enable_retry_force_nodes: # So we can check for 2 hosts scheduler_utils.populate_filter_properties(filter_properties, host_state) if force_hosts: expected_limits = None else: expected_limits = 'fake-limits' self.assertEqual(expected_limits, filter_properties.get('limits')) if (with_retry and enable_retry_force_hosts and enable_retry_force_nodes): self.assertEqual([['fake-host', 'fake-node'], ['fake-host', 'fake-node']], filter_properties['retry']['hosts']) else: self.assertNotIn('retry', filter_properties) def test_populate_filter_props(self): self._test_populate_filter_props() def test_populate_filter_props_host_dict(self): self._test_populate_filter_props(host_state_obj=False) def test_populate_filter_props_no_retry(self): self._test_populate_filter_props(with_retry=False) def test_populate_filter_props_force_hosts_no_retry(self): self._test_populate_filter_props(force_hosts=['force-host']) def test_populate_filter_props_force_nodes_no_retry(self): self._test_populate_filter_props(force_nodes=['force-node']) def test_populate_filter_props_multi_force_hosts_with_retry(self): self._test_populate_filter_props(force_hosts=['force-host1', 'force-host2']) def test_populate_filter_props_multi_force_nodes_with_retry(self): self._test_populate_filter_props(force_nodes=['force-node1', 'force-node2']) def test_populate_retry_exception_at_max_attempts(self): self.flags(max_attempts=2, group='scheduler') msg = 'The exception text was preserved!' filter_properties = dict(retry=dict(num_attempts=2, hosts=[], exc_reason=[msg])) nvh = self.assertRaises(exception.MaxRetriesExceeded, scheduler_utils.populate_retry, filter_properties, uuids.instance) # make sure 'msg' is a substring of the complete exception text self.assertIn(msg, six.text_type(nvh)) def _check_parse_options(self, opts, sep, converter, expected): good = scheduler_utils.parse_options(opts, sep=sep, converter=converter) for item in expected: self.assertIn(item, good) def test_parse_options(self): # check normal self._check_parse_options(['foo=1', 'bar=-2.1'], '=', float, [('foo', 1.0), ('bar', -2.1)]) # check convert error self._check_parse_options(['foo=a1', 'bar=-2.1'], '=', float, [('bar', -2.1)]) # check separator missing self._check_parse_options(['foo', 'bar=-2.1'], '=', float, [('bar', -2.1)]) # check key missing self._check_parse_options(['=5', 'bar=-2.1'], '=', float, [('bar', -2.1)]) def test_validate_filters_configured(self): self.flags(enabled_filters='FakeFilter1,FakeFilter2', group='filter_scheduler') self.assertTrue(scheduler_utils.validate_filter('FakeFilter1')) self.assertTrue(scheduler_utils.validate_filter('FakeFilter2')) self.assertFalse(scheduler_utils.validate_filter('FakeFilter3')) def test_validate_weighers_configured(self): self.flags(weight_classes=[ 'ServerGroupSoftAntiAffinityWeigher', 'FakeFilter1'], group='filter_scheduler') self.assertTrue(scheduler_utils.validate_weigher( 'ServerGroupSoftAntiAffinityWeigher')) self.assertTrue(scheduler_utils.validate_weigher('FakeFilter1')) self.assertFalse(scheduler_utils.validate_weigher( 'ServerGroupSoftAffinityWeigher')) def test_validate_weighers_configured_all_weighers(self): self.assertTrue(scheduler_utils.validate_weigher( 'ServerGroupSoftAffinityWeigher')) self.assertTrue(scheduler_utils.validate_weigher( 'ServerGroupSoftAntiAffinityWeigher')) def _create_server_group(self, policy='anti-affinity'): instance = fake_instance.fake_instance_obj(self.context, params={'host': 'hostA'}) group = objects.InstanceGroup() group.name = 'pele' group.uuid = uuids.fake group.members = [instance.uuid] group.policies = [policy] return group def _get_group_details(self, group, policy=None): group_hosts = ['hostB'] with test.nested( mock.patch.object(objects.InstanceGroup, 'get_by_instance_uuid', return_value=group), mock.patch.object(objects.InstanceGroup, 'get_hosts', return_value=['hostA']), ) as (get_group, get_hosts): scheduler_utils._SUPPORTS_ANTI_AFFINITY = None scheduler_utils._SUPPORTS_AFFINITY = None group_info = scheduler_utils._get_group_details( self.context, 'fake_uuid', group_hosts) self.assertEqual( (set(['hostA', 'hostB']), [policy], group.members), group_info) def test_get_group_details(self): for policy in ['affinity', 'anti-affinity', 'soft-affinity', 'soft-anti-affinity']: group = self._create_server_group(policy) self._get_group_details(group, policy=policy) def test_get_group_details_with_no_instance_uuid(self): group_info = scheduler_utils._get_group_details(self.context, None) self.assertIsNone(group_info) def _get_group_details_with_filter_not_configured(self, policy): self.flags(enabled_filters=['fake'], group='filter_scheduler') self.flags(weight_classes=['fake'], group='filter_scheduler') instance = fake_instance.fake_instance_obj(self.context, params={'host': 'hostA'}) group = objects.InstanceGroup() group.uuid = uuids.fake group.members = [instance.uuid] group.policies = [policy] with test.nested( mock.patch.object(objects.InstanceGroup, 'get_by_instance_uuid', return_value=group), ) as (get_group,): scheduler_utils._SUPPORTS_ANTI_AFFINITY = None scheduler_utils._SUPPORTS_AFFINITY = None scheduler_utils._SUPPORTS_SOFT_AFFINITY = None scheduler_utils._SUPPORTS_SOFT_ANTI_AFFINITY = None self.assertRaises(exception.UnsupportedPolicyException, scheduler_utils._get_group_details, self.context, uuids.instance) def test_get_group_details_with_filter_not_configured(self): policies = ['anti-affinity', 'affinity', 'soft-affinity', 'soft-anti-affinity'] for policy in policies: self._get_group_details_with_filter_not_configured(policy) @mock.patch.object(scheduler_utils, '_get_group_details') def test_setup_instance_group_in_filter_properties(self, mock_ggd): mock_ggd.return_value = scheduler_utils.GroupDetails( hosts=set(['hostA', 'hostB']), policies=['policy'], members=['instance1']) spec = {'instance_properties': {'uuid': uuids.instance}} filter_props = {'group_hosts': ['hostC']} scheduler_utils.setup_instance_group(self.context, spec, filter_props) mock_ggd.assert_called_once_with(self.context, uuids.instance, ['hostC']) expected_filter_props = {'group_updated': True, 'group_hosts': set(['hostA', 'hostB']), 'group_policies': ['policy'], 'group_members': ['instance1']} self.assertEqual(expected_filter_props, filter_props) @mock.patch.object(scheduler_utils, '_get_group_details') def test_setup_instance_group_with_no_group(self, mock_ggd): mock_ggd.return_value = None spec = {'instance_properties': {'uuid': uuids.instance}} filter_props = {'group_hosts': ['hostC']} scheduler_utils.setup_instance_group(self.context, spec, filter_props) mock_ggd.assert_called_once_with(self.context, uuids.instance, ['hostC']) self.assertNotIn('group_updated', filter_props) self.assertNotIn('group_policies', filter_props) self.assertEqual(['hostC'], filter_props['group_hosts']) @mock.patch.object(scheduler_utils, '_get_group_details') def test_setup_instance_group_with_filter_not_configured(self, mock_ggd): mock_ggd.side_effect = exception.NoValidHost(reason='whatever') spec = {'instance_properties': {'uuid': uuids.instance}} filter_props = {'group_hosts': ['hostC']} self.assertRaises(exception.NoValidHost, scheduler_utils.setup_instance_group, self.context, spec, filter_props)