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# Copyright 2010 United States Government as represented by the
# Administrator of the National Aeronautics and Space Administration.
# 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.
from unittest import mock
from nova import context as nova_context
from nova import exception_wrapper
from nova import test
from nova.tests import fixtures as nova_fixtures
def bad_function_exception(self, context, extra, blah="a", boo="b", zoo=None):
raise test.TestingException('bad things happened')
def bad_function_unknown_module(self, context):
"""Example traceback that points to a module that getmodule() can't find.
Traceback (most recent call last):
File "<stdin>", line 1, in <module>
File "src/lxml/lxml.etree.pyx", line 2402, in
lxml.etree._Attrib.__setitem__ (src/lxml/lxml.etree.c:67548)
File "src/lxml/apihelpers.pxi", line 570, in
lxml.etree._setAttributeValue (src/lxml/lxml.etree.c:21551)
File "src/lxml/apihelpers.pxi", line 1437, in
lxml.etree._utf8 (src/lxml/lxml.etree.c:30194)
TypeError: Argument must be bytes or unicode, got 'NoneType'
"""
from lxml import etree
x = etree.fromstring('<hello/>')
x.attrib['foo'] = None
def good_function(self, context):
return 99
class WrapExceptionTestCase(test.NoDBTestCase):
def setUp(self):
super(WrapExceptionTestCase, self).setUp()
self.notifier = self.useFixture(
nova_fixtures.NotificationFixture(self))
def test_cleanse_dict(self):
kwargs = {'foo': 1, 'blah_pass': 2, 'zoo_password': 3, '_pass': 4}
self.assertEqual({'foo': 1}, exception_wrapper._cleanse_dict(kwargs))
kwargs = {}
self.assertEqual({}, exception_wrapper._cleanse_dict(kwargs))
def test_wrap_exception_good_return(self):
wrapped = exception_wrapper.wrap_exception(
service='compute', binary='nova-compute')
self.assertEqual(99, wrapped(good_function)(1, 2))
self.assertEqual(0, len(self.notifier.notifications))
self.assertEqual(0, len(self.notifier.versioned_notifications))
def test_wrap_exception_unknown_module(self):
ctxt = nova_context.get_admin_context()
wrapped = exception_wrapper.wrap_exception(
service='compute', binary='nova-compute')
self.assertRaises(
TypeError, wrapped(bad_function_unknown_module), None, ctxt)
self.assertEqual(1, len(self.notifier.versioned_notifications))
notification = self.notifier.versioned_notifications[0]
payload = notification['payload']['nova_object.data']
self.assertEqual('unknown', payload['module_name'])
def test_wrap_exception_with_notifier(self):
wrapped = exception_wrapper.wrap_exception(
service='compute', binary='nova-compute')
ctxt = nova_context.get_admin_context()
self.assertRaises(test.TestingException,
wrapped(bad_function_exception), 1, ctxt, 3, zoo=3)
self.assertEqual(1, len(self.notifier.notifications))
notification = self.notifier.notifications[0]
self.assertEqual('bad_function_exception', notification.event_type)
self.assertEqual(ctxt, notification.context)
self.assertEqual(3, notification.payload['args']['extra'])
for key in ['exception', 'args']:
self.assertIn(key, notification.payload.keys())
self.assertNotIn('context', notification.payload['args'].keys())
self.assertEqual(1, len(self.notifier.versioned_notifications))
notification = self.notifier.versioned_notifications[0]
self.assertEqual('compute.exception', notification['event_type'])
self.assertEqual('nova-compute:fake-mini',
notification['publisher_id'])
self.assertEqual('ERROR', notification['priority'])
payload = notification['payload']
self.assertEqual('ExceptionPayload', payload['nova_object.name'])
self.assertEqual('1.1', payload['nova_object.version'])
payload = payload['nova_object.data']
self.assertEqual('TestingException', payload['exception'])
self.assertEqual('bad things happened', payload['exception_message'])
self.assertEqual('bad_function_exception', payload['function_name'])
self.assertEqual('nova.tests.unit.test_exception_wrapper',
payload['module_name'])
self.assertIn('bad_function_exception', payload['traceback'])
@mock.patch('nova.rpc.NOTIFIER')
@mock.patch('nova.notifications.objects.exception.'
'ExceptionNotification.__init__')
def test_wrap_exception_notification_not_emitted_if_disabled(
self, mock_notification, mock_notifier):
mock_notifier.is_enabled.return_value = False
wrapped = exception_wrapper.wrap_exception(
service='compute', binary='nova-compute')
ctxt = nova_context.get_admin_context()
self.assertRaises(test.TestingException,
wrapped(bad_function_exception), 1, ctxt, 3, zoo=3)
self.assertFalse(mock_notification.called)
@mock.patch('nova.notifications.objects.exception.'
'ExceptionNotification.__init__')
def test_wrap_exception_notification_not_emitted_if_unversioned(
self, mock_notifier):
self.flags(notification_format='unversioned', group='notifications')
wrapped = exception_wrapper.wrap_exception(
service='compute', binary='nova-compute')
ctxt = nova_context.get_admin_context()
self.assertRaises(test.TestingException,
wrapped(bad_function_exception), 1, ctxt, 3, zoo=3)
self.assertFalse(mock_notifier.called)
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