569 lines
23 KiB
Python
569 lines
23 KiB
Python
# Copyright (C) 2012 Hewlett-Packard Development Company, L.P.
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# Copyright (C) 2016 Vedams Inc.
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# Copyright (C) 2016 Google Inc.
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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 Google Backup code.
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"""
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import bz2
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import filecmp
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import hashlib
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import os
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import shutil
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import tempfile
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import zlib
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import mock
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from oslo_utils import units
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from cinder.backup.drivers import google as google_dr
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from cinder import context
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from cinder import db
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from cinder import exception
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from cinder.i18n import _
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from cinder import objects
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from cinder import test
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from cinder.tests.unit.backup import fake_google_client
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from cinder.tests.unit.backup import fake_google_client2
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from cinder.tests.unit import fake_constants as fake
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class FakeMD5(object):
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def __init__(self, *args, **kwargs):
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pass
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@classmethod
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def digest(self):
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return 'gcscindermd5'
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@classmethod
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def hexdigest(self):
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return 'gcscindermd5'
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class FakeObjectName(object):
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@classmethod
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def _fake_generate_object_name_prefix(self, backup):
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az = 'az_fake'
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backup_name = '%s_backup_%s' % (az, backup.id)
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volume = 'volume_%s' % (backup.volume_id)
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prefix = volume + '_' + backup_name
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return prefix
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def gcs_client(func):
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@mock.patch.object(google_dr.client, 'GoogleCredentials',
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fake_google_client.FakeGoogleCredentials)
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@mock.patch.object(google_dr.discovery, 'build',
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fake_google_client.FakeGoogleDiscovery.Build)
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@mock.patch.object(google_dr, 'GoogleMediaIoBaseDownload',
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fake_google_client.FakeGoogleMediaIoBaseDownload)
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@mock.patch.object(hashlib, 'md5', FakeMD5)
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def func_wrapper(self, *args, **kwargs):
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return func(self, *args, **kwargs)
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return func_wrapper
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def gcs_client2(func):
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@mock.patch.object(google_dr.client, 'GoogleCredentials',
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fake_google_client2.FakeGoogleCredentials)
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@mock.patch.object(google_dr.discovery, 'build',
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fake_google_client2.FakeGoogleDiscovery.Build)
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@mock.patch.object(google_dr, 'GoogleMediaIoBaseDownload',
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fake_google_client2.FakeGoogleMediaIoBaseDownload)
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@mock.patch.object(google_dr.GoogleBackupDriver,
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'_generate_object_name_prefix',
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FakeObjectName._fake_generate_object_name_prefix)
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@mock.patch.object(hashlib, 'md5', FakeMD5)
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def func_wrapper(self, *args, **kwargs):
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return func(self, *args, **kwargs)
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return func_wrapper
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def fake_backup_metadata(self, backup, object_meta):
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raise exception.BackupDriverException(message=_('fake'))
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def fake_delete(self, backup):
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raise exception.BackupOperationError()
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def _fake_delete_object(self, bucket_name, object_name):
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raise AssertionError('delete_object method should not be called.')
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class GoogleBackupDriverTestCase(test.TestCase):
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"""Test Case for Google"""
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_DEFAULT_VOLUME_ID = 'c7eb81f4-bec6-4730-a60f-8888885874df'
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def _create_volume_db_entry(self, volume_id=_DEFAULT_VOLUME_ID):
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vol = {'id': volume_id,
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'size': 1,
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'status': 'available'}
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return db.volume_create(self.ctxt, vol)['id']
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def _create_backup_db_entry(self,
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volume_id=_DEFAULT_VOLUME_ID,
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container=google_dr.CONF.backup_gcs_bucket,
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parent_id=None,
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service_metadata=None):
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try:
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db.volume_get(self.ctxt, volume_id)
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except exception.NotFound:
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self._create_volume_db_entry(volume_id=volume_id)
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kwargs = {'size': 1,
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'container': container,
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'volume_id': volume_id,
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'parent_id': parent_id,
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'user_id': fake.user_id,
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'project_id': fake.project_id,
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'service_metadata': service_metadata,
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}
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backup = objects.Backup(context=self.ctxt, **kwargs)
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backup.create()
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return backup
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def setUp(self):
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super(GoogleBackupDriverTestCase, self).setUp()
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self.flags(backup_gcs_bucket='gcscinderbucket')
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self.flags(backup_gcs_credential_file='test-file')
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self.flags(backup_gcs_project_id='test-gcs')
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self.ctxt = context.get_admin_context()
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self.volume_file = tempfile.NamedTemporaryFile()
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self.temp_dir = tempfile.mkdtemp()
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self.addCleanup(self.volume_file.close)
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# Remove tempdir.
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self.addCleanup(shutil.rmtree, self.temp_dir)
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for _i in range(0, 64):
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self.volume_file.write(os.urandom(units.Ki))
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@gcs_client
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def test_backup(self):
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volume_id = 'b09b1ad4-5f0e-4d3f-8b9e-0000004f5ec2'
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container_name = 'test-bucket'
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backup = self._create_backup_db_entry(volume_id=volume_id,
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container=container_name)
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service = google_dr.GoogleBackupDriver(self.ctxt)
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self.volume_file.seek(0)
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result = service.backup(backup, self.volume_file)
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self.assertIsNone(result)
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@gcs_client
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def test_backup_uncompressed(self):
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volume_id = '2b9f10a3-42b4-4fdf-b316-000000ceb039'
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backup = self._create_backup_db_entry(volume_id=volume_id)
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self.flags(backup_compression_algorithm='none')
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service = google_dr.GoogleBackupDriver(self.ctxt)
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self.volume_file.seek(0)
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service.backup(backup, self.volume_file)
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@gcs_client
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def test_backup_bz2(self):
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volume_id = 'dc0fee35-b44e-4f13-80d6-000000e1b50c'
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backup = self._create_backup_db_entry(volume_id=volume_id)
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self.flags(backup_compression_algorithm='bz2')
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service = google_dr.GoogleBackupDriver(self.ctxt)
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self.volume_file.seek(0)
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service.backup(backup, self.volume_file)
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@gcs_client
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def test_backup_zlib(self):
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volume_id = '5cea0535-b6fb-4531-9a38-000000bea094'
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backup = self._create_backup_db_entry(volume_id=volume_id)
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self.flags(backup_compression_algorithm='zlib')
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service = google_dr.GoogleBackupDriver(self.ctxt)
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self.volume_file.seek(0)
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service.backup(backup, self.volume_file)
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@gcs_client
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def test_backup_default_container(self):
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volume_id = '9552017f-c8b9-4e4e-a876-00000053349c'
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backup = self._create_backup_db_entry(volume_id=volume_id,
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container=None)
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service = google_dr.GoogleBackupDriver(self.ctxt)
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self.volume_file.seek(0)
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service.backup(backup, self.volume_file)
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self.assertEqual('gcscinderbucket', backup.container)
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@gcs_client
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@mock.patch('cinder.backup.drivers.google.GoogleBackupDriver.'
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'_send_progress_end')
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@mock.patch('cinder.backup.drivers.google.GoogleBackupDriver.'
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'_send_progress_notification')
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def test_backup_default_container_notify(self, _send_progress,
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_send_progress_end):
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volume_id = '87dd0eed-2598-4ebd-8ebb-000000ac578a'
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backup = self._create_backup_db_entry(volume_id=volume_id,
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container=None)
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# If the backup_object_number_per_notification is set to 1,
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# the _send_progress method will be called for sure.
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google_dr.CONF.set_override("backup_object_number_per_notification", 1)
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google_dr.CONF.set_override("backup_gcs_enable_progress_timer", False)
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service = google_dr.GoogleBackupDriver(self.ctxt)
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self.volume_file.seek(0)
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service.backup(backup, self.volume_file)
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self.assertTrue(_send_progress.called)
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self.assertTrue(_send_progress_end.called)
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# If the backup_object_number_per_notification is increased to
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# another value, the _send_progress method will not be called.
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_send_progress.reset_mock()
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_send_progress_end.reset_mock()
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google_dr.CONF.set_override("backup_object_number_per_notification",
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10)
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service = google_dr.GoogleBackupDriver(self.ctxt)
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self.volume_file.seek(0)
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service.backup(backup, self.volume_file)
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self.assertFalse(_send_progress.called)
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self.assertTrue(_send_progress_end.called)
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# If the timer is enabled, the _send_progress will be called,
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# since the timer can trigger the progress notification.
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_send_progress.reset_mock()
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_send_progress_end.reset_mock()
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google_dr.CONF.set_override("backup_object_number_per_notification",
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10)
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google_dr.CONF.set_override("backup_gcs_enable_progress_timer", True)
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service = google_dr.GoogleBackupDriver(self.ctxt)
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self.volume_file.seek(0)
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service.backup(backup, self.volume_file)
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self.assertTrue(_send_progress.called)
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self.assertTrue(_send_progress_end.called)
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@gcs_client
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def test_backup_custom_container(self):
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volume_id = '1da9859e-77e5-4731-bd58-000000ca119e'
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container_name = 'fake99'
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backup = self._create_backup_db_entry(volume_id=volume_id,
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container=container_name)
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service = google_dr.GoogleBackupDriver(self.ctxt)
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self.volume_file.seek(0)
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service.backup(backup, self.volume_file)
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self.assertEqual(container_name, backup.container)
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@gcs_client2
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def test_backup_shafile(self):
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volume_id = '6465dad4-22af-48f7-8a1a-000000218907'
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container_name = self.temp_dir.replace(tempfile.gettempdir() + '/',
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'', 1)
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backup = self._create_backup_db_entry(volume_id=volume_id,
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container=container_name)
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service = google_dr.GoogleBackupDriver(self.ctxt)
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self.volume_file.seek(0)
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service.backup(backup, self.volume_file)
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self.assertEqual(container_name, backup.container)
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# Verify sha contents
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content1 = service._read_sha256file(backup)
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self.assertEqual(64 * units.Ki / content1['chunk_size'],
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len(content1['sha256s']))
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@gcs_client2
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def test_backup_cmp_shafiles(self):
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volume_id = '1a99ac67-c534-4fe3-b472-0000001785e2'
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container_name = self.temp_dir.replace(tempfile.gettempdir() + '/',
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'', 1)
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backup = self._create_backup_db_entry(volume_id=volume_id,
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container=container_name)
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service1 = google_dr.GoogleBackupDriver(self.ctxt)
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self.volume_file.seek(0)
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service1.backup(backup, self.volume_file)
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self.assertEqual(container_name, backup.container)
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# Create incremental backup with no change to contents
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deltabackup = self._create_backup_db_entry(volume_id=volume_id,
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container=container_name,
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parent_id=backup.id)
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service2 = google_dr.GoogleBackupDriver(self.ctxt)
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self.volume_file.seek(0)
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service2.backup(deltabackup, self.volume_file)
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self.assertEqual(container_name, deltabackup.container)
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# Compare shas from both files
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content1 = service1._read_sha256file(backup)
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content2 = service2._read_sha256file(deltabackup)
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self.assertEqual(len(content1['sha256s']), len(content2['sha256s']))
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self.assertEqual(set(content1['sha256s']), set(content2['sha256s']))
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@gcs_client2
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def test_backup_delta_two_objects_change(self):
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volume_id = '30dab288-265a-4583-9abe-000000d42c67'
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self.flags(backup_gcs_object_size=8 * units.Ki)
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self.flags(backup_gcs_block_size=units.Ki)
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container_name = self.temp_dir.replace(tempfile.gettempdir() + '/',
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'', 1)
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backup = self._create_backup_db_entry(volume_id=volume_id,
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container=container_name)
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service1 = google_dr.GoogleBackupDriver(self.ctxt)
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self.volume_file.seek(0)
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service1.backup(backup, self.volume_file)
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self.assertEqual(container_name, backup.container)
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# Create incremental backup with no change to contents
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self.volume_file.seek(2 * 8 * units.Ki)
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self.volume_file.write(os.urandom(units.Ki))
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self.volume_file.seek(4 * 8 * units.Ki)
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self.volume_file.write(os.urandom(units.Ki))
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deltabackup = self._create_backup_db_entry(volume_id=volume_id,
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container=container_name,
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parent_id=backup.id)
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service2 = google_dr.GoogleBackupDriver(self.ctxt)
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self.volume_file.seek(0)
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service2.backup(deltabackup, self.volume_file)
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self.assertEqual(container_name, deltabackup.container)
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content1 = service1._read_sha256file(backup)
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content2 = service2._read_sha256file(deltabackup)
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# Verify that two shas are changed at index 16 and 32
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self.assertNotEqual(content1['sha256s'][16], content2['sha256s'][16])
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self.assertNotEqual(content1['sha256s'][32], content2['sha256s'][32])
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@gcs_client2
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def test_backup_delta_two_blocks_in_object_change(self):
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volume_id = 'b943e84f-aa67-4331-9ab2-000000cf19ba'
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self.flags(backup_gcs_object_size=8 * units.Ki)
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self.flags(backup_gcs_block_size=units.Ki)
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container_name = self.temp_dir.replace(tempfile.gettempdir() + '/',
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'', 1)
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backup = self._create_backup_db_entry(volume_id=volume_id,
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container=container_name)
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service1 = google_dr.GoogleBackupDriver(self.ctxt)
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self.volume_file.seek(0)
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service1.backup(backup, self.volume_file)
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self.assertEqual(container_name, backup.container)
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# Create incremental backup with no change to contents
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self.volume_file.seek(16 * units.Ki)
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self.volume_file.write(os.urandom(units.Ki))
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self.volume_file.seek(20 * units.Ki)
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self.volume_file.write(os.urandom(units.Ki))
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deltabackup = self._create_backup_db_entry(volume_id=volume_id,
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container=container_name,
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parent_id=backup.id)
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service2 = google_dr.GoogleBackupDriver(self.ctxt)
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self.volume_file.seek(0)
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service2.backup(deltabackup, self.volume_file)
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self.assertEqual(container_name, deltabackup.container)
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# Verify that two shas are changed at index 16 and 20
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content1 = service1._read_sha256file(backup)
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content2 = service2._read_sha256file(deltabackup)
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self.assertNotEqual(content1['sha256s'][16], content2['sha256s'][16])
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self.assertNotEqual(content1['sha256s'][20], content2['sha256s'][20])
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@gcs_client
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def test_create_backup_fail(self):
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volume_id = 'b09b1ad4-5f0e-4d3f-8b9e-0000004f5ec2'
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container_name = 'gcs_api_failure'
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backup = self._create_backup_db_entry(volume_id=volume_id,
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container=container_name)
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service = google_dr.GoogleBackupDriver(self.ctxt)
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self.volume_file.seek(0)
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self.assertRaises(exception.GCSApiFailure,
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service.backup,
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backup, self.volume_file)
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@gcs_client
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def test_create_backup_fail2(self):
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volume_id = 'b09b1ad4-5f0e-4d3f-8b9e-0000004f5ec2'
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container_name = 'gcs_oauth2_failure'
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backup = self._create_backup_db_entry(volume_id=volume_id,
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container=container_name)
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service = google_dr.GoogleBackupDriver(self.ctxt)
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self.volume_file.seek(0)
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self.assertRaises(exception.GCSOAuth2Failure,
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service.backup,
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backup, self.volume_file)
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@gcs_client
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@mock.patch.object(google_dr.GoogleBackupDriver, '_backup_metadata',
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fake_backup_metadata)
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def test_backup_backup_metadata_fail(self):
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"""Test of when an exception occurs in backup().
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In backup(), after an exception occurs in
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self._backup_metadata(), we want to check the process of an
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exception handler.
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"""
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volume_id = '020d9142-339c-4876-a445-000000f1520c'
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backup = self._create_backup_db_entry(volume_id=volume_id)
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self.flags(backup_compression_algorithm='none')
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service = google_dr.GoogleBackupDriver(self.ctxt)
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self.volume_file.seek(0)
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# We expect that an exception be notified directly.
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self.assertRaises(exception.BackupDriverException,
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service.backup,
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backup, self.volume_file)
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@gcs_client
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@mock.patch.object(google_dr.GoogleBackupDriver, '_backup_metadata',
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fake_backup_metadata)
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@mock.patch.object(google_dr.GoogleBackupDriver, 'delete', fake_delete)
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def test_backup_backup_metadata_fail2(self):
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"""Test of when an exception occurs in an exception handler.
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In backup(), after an exception occurs in
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self._backup_metadata(), we want to check the process when the
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second exception occurs in self.delete().
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"""
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volume_id = '2164421d-f181-4db7-b9bd-000000eeb628'
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backup = self._create_backup_db_entry(volume_id=volume_id)
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self.flags(backup_compression_algorithm='none')
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service = google_dr.GoogleBackupDriver(self.ctxt)
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self.volume_file.seek(0)
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# We expect that the second exception is notified.
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self.assertRaises(exception.BackupOperationError,
|
|
service.backup,
|
|
backup, self.volume_file)
|
|
|
|
@gcs_client
|
|
def test_restore(self):
|
|
volume_id = 'c2a81f09-f480-4325-8424-00000071685b'
|
|
backup = self._create_backup_db_entry(volume_id=volume_id)
|
|
service = google_dr.GoogleBackupDriver(self.ctxt)
|
|
|
|
with tempfile.NamedTemporaryFile() as volume_file:
|
|
service.restore(backup, volume_id, volume_file)
|
|
|
|
@gcs_client
|
|
def test_restore_fail(self):
|
|
volume_id = 'c2a81f09-f480-4325-8424-00000071685b'
|
|
container_name = 'gcs_connection_failure'
|
|
backup = self._create_backup_db_entry(volume_id=volume_id,
|
|
container=container_name)
|
|
service = google_dr.GoogleBackupDriver(self.ctxt)
|
|
|
|
with tempfile.NamedTemporaryFile() as volume_file:
|
|
self.assertRaises(exception.GCSConnectionFailure,
|
|
service.restore,
|
|
backup, volume_id, volume_file)
|
|
|
|
@gcs_client2
|
|
def test_restore_delta(self):
|
|
volume_id = '04d83506-bcf7-4ff5-9c65-00000051bd2e'
|
|
self.flags(backup_gcs_object_size=8 * units.Ki)
|
|
self.flags(backup_gcs_block_size=units.Ki)
|
|
container_name = self.temp_dir.replace(tempfile.gettempdir() + '/',
|
|
'', 1)
|
|
backup = self._create_backup_db_entry(volume_id=volume_id,
|
|
container=container_name)
|
|
service1 = google_dr.GoogleBackupDriver(self.ctxt)
|
|
self.volume_file.seek(0)
|
|
service1.backup(backup, self.volume_file)
|
|
|
|
# Create incremental backup with no change to contents
|
|
self.volume_file.seek(16 * units.Ki)
|
|
self.volume_file.write(os.urandom(units.Ki))
|
|
self.volume_file.seek(20 * units.Ki)
|
|
self.volume_file.write(os.urandom(units.Ki))
|
|
|
|
deltabackup = self._create_backup_db_entry(volume_id=volume_id,
|
|
container=container_name,
|
|
parent_id=backup.id)
|
|
self.volume_file.seek(0)
|
|
service2 = google_dr.GoogleBackupDriver(self.ctxt)
|
|
service2.backup(deltabackup, self.volume_file, True)
|
|
|
|
with tempfile.NamedTemporaryFile() as restored_file:
|
|
service2.restore(deltabackup, volume_id,
|
|
restored_file)
|
|
self.assertTrue(filecmp.cmp(self.volume_file.name,
|
|
restored_file.name))
|
|
|
|
@gcs_client
|
|
def test_delete(self):
|
|
volume_id = '9ab256c8-3175-4ad8-baa1-0000007f9d31'
|
|
object_prefix = 'test_prefix'
|
|
backup = self._create_backup_db_entry(volume_id=volume_id,
|
|
service_metadata=object_prefix)
|
|
service = google_dr.GoogleBackupDriver(self.ctxt)
|
|
service.delete(backup)
|
|
|
|
@gcs_client
|
|
@mock.patch.object(google_dr.GoogleBackupDriver, 'delete_object',
|
|
_fake_delete_object)
|
|
def test_delete_without_object_prefix(self):
|
|
volume_id = 'ee30d649-72a6-49a5-b78d-000000edb6b1'
|
|
backup = self._create_backup_db_entry(volume_id=volume_id)
|
|
service = google_dr.GoogleBackupDriver(self.ctxt)
|
|
service.delete(backup)
|
|
|
|
@gcs_client
|
|
def test_get_compressor(self):
|
|
service = google_dr.GoogleBackupDriver(self.ctxt)
|
|
compressor = service._get_compressor('None')
|
|
self.assertIsNone(compressor)
|
|
compressor = service._get_compressor('zlib')
|
|
self.assertEqual(zlib, compressor)
|
|
compressor = service._get_compressor('bz2')
|
|
self.assertEqual(bz2, compressor)
|
|
self.assertRaises(ValueError, service._get_compressor, 'fake')
|
|
|
|
@gcs_client
|
|
def test_prepare_output_data_effective_compression(self):
|
|
service = google_dr.GoogleBackupDriver(self.ctxt)
|
|
# Set up buffer of 128 zeroed bytes
|
|
fake_data = b'\0' * 128
|
|
|
|
result = service._prepare_output_data(fake_data)
|
|
|
|
self.assertEqual('zlib', result[0])
|
|
self.assertTrue(len(result) < len(fake_data))
|
|
|
|
@gcs_client
|
|
def test_prepare_output_data_no_compresssion(self):
|
|
self.flags(backup_compression_algorithm='none')
|
|
service = google_dr.GoogleBackupDriver(self.ctxt)
|
|
# Set up buffer of 128 zeroed bytes
|
|
fake_data = b'\0' * 128
|
|
|
|
result = service._prepare_output_data(fake_data)
|
|
|
|
self.assertEqual('none', result[0])
|
|
self.assertEqual(fake_data, result[1])
|
|
|
|
@gcs_client
|
|
def test_prepare_output_data_ineffective_compression(self):
|
|
service = google_dr.GoogleBackupDriver(self.ctxt)
|
|
# Set up buffer of 128 zeroed bytes
|
|
fake_data = b'\0' * 128
|
|
# Pre-compress so that compression in the driver will be ineffective.
|
|
already_compressed_data = service.compressor.compress(fake_data)
|
|
|
|
result = service._prepare_output_data(already_compressed_data)
|
|
|
|
self.assertEqual('none', result[0])
|
|
self.assertEqual(already_compressed_data, result[1])
|