234 lines
8.7 KiB
Python
234 lines
8.7 KiB
Python
# Copyright 2012 IBM Corp.
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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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import collections
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import mock
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import os_traits
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from oslo_utils.fixture import uuidsentinel as uuids
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from nova.compute import manager as compute_manager
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from nova import context as nova_context
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from nova import exception
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from nova import objects
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from nova.scheduler.client import report
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from nova import test
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from nova.virt import fake
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from nova.virt import virtapi
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class VirtAPIBaseTest(test.NoDBTestCase, test.APICoverage):
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cover_api = virtapi.VirtAPI
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def setUp(self):
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super(VirtAPIBaseTest, self).setUp()
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self.set_up_virtapi()
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def set_up_virtapi(self):
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self.virtapi = virtapi.VirtAPI()
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def assertExpected(self, method, *args, **kwargs):
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self.assertRaises(NotImplementedError,
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getattr(self.virtapi, method),
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*args, **kwargs)
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def test_wait_for_instance_event(self):
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self.assertExpected('wait_for_instance_event',
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'instance', ['event'])
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def test_exit_wait_early(self):
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self.assertExpected('exit_wait_early', [])
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def test_update_compute_provider_status(self):
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self.assertExpected('update_compute_provider_status',
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nova_context.get_admin_context(), uuids.rp_uuid,
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enabled=False)
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class FakeVirtAPITest(VirtAPIBaseTest):
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cover_api = fake.FakeVirtAPI
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def set_up_virtapi(self):
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self.virtapi = fake.FakeVirtAPI()
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def assertExpected(self, method, *args, **kwargs):
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if method == 'wait_for_instance_event':
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run = False
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with self.virtapi.wait_for_instance_event(*args, **kwargs):
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run = True
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self.assertTrue(run)
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elif method == 'exit_wait_early':
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self.virtapi.exit_wait_early(*args, **kwargs)
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elif method == 'update_compute_provider_status':
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self.virtapi.update_compute_provider_status(*args, **kwargs)
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else:
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self.fail("Unhandled FakeVirtAPI method: %s" % method)
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class FakeCompute(object):
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def __init__(self):
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self.conductor_api = mock.MagicMock()
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self.db = mock.MagicMock()
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self._events = []
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self.instance_events = mock.MagicMock()
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self.instance_events.prepare_for_instance_event.side_effect = \
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self._prepare_for_instance_event
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self.reportclient = mock.Mock(spec=report.SchedulerReportClient)
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# Keep track of the traits set on each provider in the test.
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self.provider_traits = collections.defaultdict(set)
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self.reportclient.get_provider_traits.side_effect = (
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self._get_provider_traits)
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self.reportclient.set_traits_for_provider.side_effect = (
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self._set_traits_for_provider)
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def _get_provider_traits(self, context, rp_uuid):
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return mock.Mock(traits=self.provider_traits[rp_uuid])
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def _set_traits_for_provider(
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self, context, rp_uuid, traits, generation=None):
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self.provider_traits[rp_uuid] = traits
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def _event_waiter(self):
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event = mock.MagicMock()
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event.status = 'completed'
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return event
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def _prepare_for_instance_event(self, instance, name, tag):
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m = mock.MagicMock()
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m.instance = instance
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m.name = name
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m.tag = tag
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m.event_name = '%s-%s' % (name, tag)
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m.wait.side_effect = self._event_waiter
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self._events.append(m)
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return m
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class ComputeVirtAPITest(VirtAPIBaseTest):
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cover_api = compute_manager.ComputeVirtAPI
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def set_up_virtapi(self):
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self.compute = FakeCompute()
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self.virtapi = compute_manager.ComputeVirtAPI(self.compute)
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def test_exit_wait_early(self):
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self.assertRaises(self.virtapi._exit_early_exc,
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self.virtapi.exit_wait_early,
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[('foo', 'bar'),
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('foo', 'baz')])
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def test_wait_for_instance_event(self):
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and_i_ran = ''
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event_1_tag = objects.InstanceExternalEvent.make_key(
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'event1')
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event_2_tag = objects.InstanceExternalEvent.make_key(
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'event2', 'tag')
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events = {
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('event1', None): event_1_tag,
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('event2', 'tag'): event_2_tag,
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}
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with self.virtapi.wait_for_instance_event('instance', events.keys()):
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and_i_ran = 'I ran so far a-waa-y'
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self.assertEqual('I ran so far a-waa-y', and_i_ran)
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self.assertEqual(2, len(self.compute._events))
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for event in self.compute._events:
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self.assertEqual('instance', event.instance)
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self.assertIn((event.name, event.tag), events.keys())
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event.wait.assert_called_once_with()
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def test_wait_for_instance_event_failed(self):
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def _failer():
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event = mock.MagicMock()
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event.status = 'failed'
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return event
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@mock.patch.object(self.virtapi._compute, '_event_waiter', _failer)
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def do_test():
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with self.virtapi.wait_for_instance_event('instance',
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[('foo', 'bar')]):
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pass
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self.assertRaises(exception.NovaException, do_test)
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def test_wait_for_instance_event_failed_callback(self):
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def _failer():
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event = mock.MagicMock()
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event.status = 'failed'
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return event
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@mock.patch.object(self.virtapi._compute, '_event_waiter', _failer)
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def do_test():
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callback = mock.MagicMock()
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with self.virtapi.wait_for_instance_event('instance',
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[('foo', None)],
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error_callback=callback):
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pass
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callback.assert_called_with('foo', 'instance')
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do_test()
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def test_wait_for_instance_event_timeout(self):
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@mock.patch.object(self.virtapi._compute, '_event_waiter',
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side_effect=test.TestingException())
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@mock.patch('eventlet.timeout.Timeout')
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def do_test(mock_timeout, mock_waiter):
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with self.virtapi.wait_for_instance_event('instance',
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[('foo', 'bar')]):
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pass
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self.assertRaises(test.TestingException, do_test)
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def test_wait_for_instance_event_exit_early(self):
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# Wait for two events, exit early skipping one.
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# Make sure we waited for one and did not wait for the other
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with self.virtapi.wait_for_instance_event('instance',
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[('foo', 'bar'),
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('foo', 'baz')]):
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self.virtapi.exit_wait_early([('foo', 'baz')])
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self.fail('never gonna happen')
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self.assertEqual(2, len(self.compute._events))
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for event in self.compute._events:
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if event.tag == 'bar':
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event.wait.assert_called_once_with()
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else:
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event.wait.assert_not_called()
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def test_update_compute_provider_status(self):
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"""Tests scenarios for adding/removing the COMPUTE_STATUS_DISABLED
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trait on a given compute node resource provider.
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"""
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ctxt = nova_context.get_admin_context()
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# Start by adding the trait to a disabled provider.
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self.assertNotIn(uuids.rp_uuid, self.compute.provider_traits)
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self.virtapi.update_compute_provider_status(
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ctxt, uuids.rp_uuid, enabled=False)
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self.assertEqual({os_traits.COMPUTE_STATUS_DISABLED},
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self.compute.provider_traits[uuids.rp_uuid])
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# Now run it again to make sure nothing changed.
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with mock.patch.object(self.compute.reportclient,
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'set_traits_for_provider',
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new_callable=mock.NonCallableMock):
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self.virtapi.update_compute_provider_status(
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ctxt, uuids.rp_uuid, enabled=False)
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# Now enable the provider and make sure the trait is removed.
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self.virtapi.update_compute_provider_status(
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ctxt, uuids.rp_uuid, enabled=True)
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self.assertEqual(set(), self.compute.provider_traits[uuids.rp_uuid])
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