707 lines
30 KiB
Python
707 lines
30 KiB
Python
# Copyright (C) 2015 Tom Barron <tpb@dyncloud.net>
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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 Backup NFS driver.
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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 os_brick.remotefs import remotefs as remotefs_brick
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from oslo_config import cfg
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import six
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from cinder.backup.drivers import nfs
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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 import fake_constants as fake
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from cinder import utils
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CONF = cfg.CONF
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FAKE_BACKUP_MOUNT_POINT_BASE = '/fake/mount-point-base'
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FAKE_HOST = 'fake_host'
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FAKE_EXPORT_PATH = 'fake/export/path'
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FAKE_BACKUP_SHARE = '%s:/%s' % (FAKE_HOST, FAKE_EXPORT_PATH)
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FAKE_BACKUP_PATH = os.path.join(FAKE_BACKUP_MOUNT_POINT_BASE,
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FAKE_EXPORT_PATH)
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FAKE_BACKUP_ID = fake.BACKUP_ID
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FAKE_BACKUP_ID_PART1 = fake.BACKUP_ID[:2]
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FAKE_BACKUP_ID_PART2 = fake.BACKUP_ID[2:4]
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FAKE_BACKUP_ID_REST = fake.BACKUP_ID[4:]
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UPDATED_CONTAINER_NAME = os.path.join(FAKE_BACKUP_ID_PART1,
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FAKE_BACKUP_ID_PART2,
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FAKE_BACKUP_ID)
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class BackupNFSShareTestCase(test.TestCase):
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def setUp(self):
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super(BackupNFSShareTestCase, self).setUp()
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self.ctxt = context.get_admin_context()
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self.mock_object(nfs, 'LOG')
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def test_check_configuration_no_backup_share(self):
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self.override_config('backup_share', None)
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self.mock_object(nfs.NFSBackupDriver, '_init_backup_repo_path',
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return_value=FAKE_BACKUP_PATH)
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driver = nfs.NFSBackupDriver(self.ctxt)
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self.assertRaises(exception.InvalidConfigurationValue,
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driver.check_for_setup_error)
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@mock.patch.object(remotefs_brick, 'RemoteFsClient')
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def test_init_backup_repo_path(self, mock_remotefs_client_class):
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self.override_config('backup_share', FAKE_BACKUP_SHARE)
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self.override_config('backup_mount_point_base',
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FAKE_BACKUP_MOUNT_POINT_BASE)
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mock_remotefsclient = mock.Mock()
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mock_remotefsclient.get_mount_point = mock.Mock(
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return_value=FAKE_BACKUP_PATH)
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self.mock_object(nfs.NFSBackupDriver, 'check_for_setup_error')
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mock_remotefs_client_class.return_value = mock_remotefsclient
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self.mock_object(utils, 'get_root_helper')
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with mock.patch.object(nfs.NFSBackupDriver, '_init_backup_repo_path'):
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driver = nfs.NFSBackupDriver(self.ctxt)
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path = driver._init_backup_repo_path()
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self.assertEqual(FAKE_BACKUP_PATH, path)
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utils.get_root_helper.called_once()
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mock_remotefs_client_class.assert_called_once_with(
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'nfs',
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utils.get_root_helper(),
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nfs_mount_point_base=FAKE_BACKUP_MOUNT_POINT_BASE,
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nfs_mount_options=None
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)
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mock_remotefsclient.mount.assert_called_once_with(FAKE_BACKUP_SHARE)
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mock_remotefsclient.get_mount_point.assert_called_once_with(
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FAKE_BACKUP_SHARE)
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def fake_md5(arg):
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class result(object):
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def hexdigest(self):
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return 'fake-md5-sum'
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ret = result()
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return ret
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class BackupNFSSwiftBasedTestCase(test.TestCase):
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"""Test Cases for based on Swift tempest backup tests."""
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_DEFAULT_VOLUME_ID = fake.VOLUME_ID
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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='test-container',
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backup_id=fake.BACKUP_ID,
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parent_id=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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backup = {'id': backup_id,
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'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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}
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return db.backup_create(self.ctxt, backup)['id']
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def setUp(self):
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super(BackupNFSSwiftBasedTestCase, self).setUp()
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self.ctxt = context.get_admin_context()
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self.mock_object(hashlib, 'md5', fake_md5)
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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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self.override_config('backup_share', FAKE_BACKUP_SHARE)
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self.override_config('backup_mount_point_base',
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'/tmp')
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self.override_config('backup_file_size', 52428800)
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mock_remotefsclient = mock.Mock()
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mock_remotefsclient.get_mount_point = mock.Mock(
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return_value=self.temp_dir)
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self.mock_object(remotefs_brick, 'RemoteFsClient',
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return_value=mock_remotefsclient)
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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, 32):
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self.volume_file.write(os.urandom(1024))
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def test_backup_uncompressed(self):
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volume_id = fake.VOLUME_ID
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self._create_backup_db_entry(volume_id=volume_id)
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self.flags(backup_compression_algorithm='none')
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service = nfs.NFSBackupDriver(self.ctxt)
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self.volume_file.seek(0)
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backup = objects.Backup.get_by_id(self.ctxt, fake.BACKUP_ID)
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service.backup(backup, self.volume_file)
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def test_backup_bz2(self):
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volume_id = fake.VOLUME_ID
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self._create_backup_db_entry(volume_id=volume_id)
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self.flags(backup_compression_algorithm='bz2')
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service = nfs.NFSBackupDriver(self.ctxt)
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self.volume_file.seek(0)
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backup = objects.Backup.get_by_id(self.ctxt, fake.BACKUP_ID)
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service.backup(backup, self.volume_file)
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def test_backup_zlib(self):
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volume_id = fake.VOLUME_ID
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self._create_backup_db_entry(volume_id=volume_id)
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self.flags(backup_compression_algorithm='zlib')
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service = nfs.NFSBackupDriver(self.ctxt)
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self.volume_file.seek(0)
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backup = objects.Backup.get_by_id(self.ctxt, fake.BACKUP_ID)
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service.backup(backup, self.volume_file)
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def test_backup_default_container(self):
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volume_id = fake.VOLUME_ID
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self._create_backup_db_entry(volume_id=volume_id,
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container=None,
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backup_id=FAKE_BACKUP_ID)
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service = nfs.NFSBackupDriver(self.ctxt)
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self.volume_file.seek(0)
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backup = objects.Backup.get_by_id(self.ctxt, FAKE_BACKUP_ID)
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service.backup(backup, self.volume_file)
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backup = objects.Backup.get_by_id(self.ctxt, FAKE_BACKUP_ID)
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self.assertEqual(backup['container'], UPDATED_CONTAINER_NAME)
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@mock.patch('cinder.backup.drivers.posix.PosixBackupDriver.'
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'update_container_name',
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return_value='testcontainer1')
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@mock.patch('cinder.backup.drivers.nfs.NFSBackupDriver.'
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'_send_progress_end')
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@mock.patch('cinder.backup.drivers.nfs.NFSBackupDriver.'
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'_send_progress_notification')
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def test_backup_container_notify_1(self, _send_progress,
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_send_progress_end,
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_mock_update_container_name):
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# This unit test writes data to disk. It should be
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# updated to not do that.
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volume_id = fake.VOLUME_ID
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self._create_backup_db_entry(volume_id=volume_id,
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container='testcontainer1')
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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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_send_progress.reset_mock()
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_send_progress_end.reset_mock()
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CONF.set_override("backup_object_number_per_notification", 1)
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CONF.set_override("backup_enable_progress_timer", False)
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service = nfs.NFSBackupDriver(self.ctxt)
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self.volume_file.seek(0)
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backup = objects.Backup.get_by_id(self.ctxt, fake.BACKUP_ID)
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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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@mock.patch('cinder.backup.drivers.posix.PosixBackupDriver.'
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'update_container_name',
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return_value='testcontainer2')
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@mock.patch('cinder.backup.drivers.nfs.NFSBackupDriver.'
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'_send_progress_end')
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@mock.patch('cinder.backup.drivers.nfs.NFSBackupDriver.'
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'_send_progress_notification')
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def test_backup_container_notify_2(self, _send_progress,
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_send_progress_end,
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_mock_update_container_name):
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# This unit test writes data to disk. It should be
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# updated to not do that.
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volume_id = fake.VOLUME_ID
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self._create_backup_db_entry(volume_id=volume_id,
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container='testcontainer2')
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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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CONF.set_override("backup_object_number_per_notification", 10)
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CONF.set_override("backup_enable_progress_timer", False)
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service = nfs.NFSBackupDriver(self.ctxt)
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self.volume_file.seek(0)
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backup = objects.Backup.get_by_id(self.ctxt, fake.BACKUP_ID)
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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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@mock.patch('cinder.backup.drivers.posix.PosixBackupDriver.'
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'update_container_name',
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return_value='testcontainer3')
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@mock.patch('cinder.backup.drivers.nfs.NFSBackupDriver.'
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'_send_progress_end')
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@mock.patch('cinder.backup.drivers.nfs.NFSBackupDriver.'
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'_send_progress_notification')
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def test_backup_container_notify_3(self, _send_progress,
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_send_progress_end,
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_mock_update_container_name):
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# This unit test writes data to disk. It should be
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# updated to not do that.
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volume_id = fake.VOLUME_ID
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self._create_backup_db_entry(volume_id=volume_id,
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container='testcontainer3')
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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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CONF.set_override("backup_object_number_per_notification", 10)
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CONF.set_override("backup_enable_progress_timer", True)
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service = nfs.NFSBackupDriver(self.ctxt)
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self.volume_file.seek(0)
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backup = objects.Backup.get_by_id(self.ctxt, fake.BACKUP_ID)
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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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def test_backup_custom_container(self):
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volume_id = fake.VOLUME_ID
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container_name = 'fake99'
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self._create_backup_db_entry(volume_id=volume_id,
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container=container_name)
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service = nfs.NFSBackupDriver(self.ctxt)
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self.volume_file.seek(0)
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backup = objects.Backup.get_by_id(self.ctxt, fake.BACKUP_ID)
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service.backup(backup, self.volume_file)
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backup = objects.Backup.get_by_id(self.ctxt, fake.BACKUP_ID)
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self.assertEqual(backup['container'], container_name)
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def test_backup_shafile(self):
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volume_id = fake.VOLUME_ID
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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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self.mock_object(nfs.NFSBackupDriver,
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'_generate_object_name_prefix',
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_fake_generate_object_name_prefix)
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container_name = self.temp_dir.replace(tempfile.gettempdir() + '/',
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'', 1)
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self._create_backup_db_entry(volume_id=volume_id,
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container=container_name)
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service = nfs.NFSBackupDriver(self.ctxt)
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self.volume_file.seek(0)
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backup = objects.Backup.get_by_id(self.ctxt, fake.BACKUP_ID)
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service.backup(backup, self.volume_file)
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backup = objects.Backup.get_by_id(self.ctxt, fake.BACKUP_ID)
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self.assertEqual(backup['container'], container_name)
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# Verify sha contents
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content1 = service._read_sha256file(backup)
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self.assertEqual(32 * 1024 / content1['chunk_size'],
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len(content1['sha256s']))
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def test_backup_cmp_shafiles(self):
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volume_id = fake.VOLUME_ID
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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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self.mock_object(nfs.NFSBackupDriver,
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'_generate_object_name_prefix',
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_fake_generate_object_name_prefix)
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container_name = self.temp_dir.replace(tempfile.gettempdir() + '/',
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'', 1)
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self._create_backup_db_entry(volume_id=volume_id,
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container=container_name,
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backup_id=fake.BACKUP_ID)
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service = nfs.NFSBackupDriver(self.ctxt)
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self.volume_file.seek(0)
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backup = objects.Backup.get_by_id(self.ctxt, fake.BACKUP_ID)
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service.backup(backup, self.volume_file)
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backup = objects.Backup.get_by_id(self.ctxt, fake.BACKUP_ID)
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self.assertEqual(backup['container'], container_name)
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# Create incremental backup with no change to contents
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self._create_backup_db_entry(volume_id=volume_id,
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container=container_name,
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backup_id=fake.BACKUP2_ID,
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parent_id=fake.BACKUP_ID)
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service = nfs.NFSBackupDriver(self.ctxt)
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self.volume_file.seek(0)
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deltabackup = objects.Backup.get_by_id(self.ctxt, fake.BACKUP2_ID)
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service.backup(deltabackup, self.volume_file)
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deltabackup = objects.Backup.get_by_id(self.ctxt, fake.BACKUP2_ID)
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self.assertEqual(deltabackup['container'], container_name)
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# Compare shas from both files
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content1 = service._read_sha256file(backup)
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content2 = service._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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def test_backup_delta_two_objects_change(self):
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volume_id = fake.VOLUME_ID
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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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self.mock_object(nfs.NFSBackupDriver,
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'_generate_object_name_prefix',
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_fake_generate_object_name_prefix)
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self.flags(backup_file_size=(8 * 1024))
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self.flags(backup_sha_block_size_bytes=1024)
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container_name = self.temp_dir.replace(tempfile.gettempdir() + '/',
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'', 1)
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self._create_backup_db_entry(volume_id=volume_id,
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container=container_name,
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backup_id=fake.BACKUP_ID)
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service = nfs.NFSBackupDriver(self.ctxt)
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self.volume_file.seek(0)
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backup = objects.Backup.get_by_id(self.ctxt, fake.BACKUP_ID)
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service.backup(backup, self.volume_file)
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backup = objects.Backup.get_by_id(self.ctxt, fake.BACKUP_ID)
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self.assertEqual(backup['container'], container_name)
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# Create incremental backup with no change to contents
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self.volume_file.seek(16 * 1024)
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self.volume_file.write(os.urandom(1024))
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self.volume_file.seek(20 * 1024)
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self.volume_file.write(os.urandom(1024))
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self._create_backup_db_entry(volume_id=volume_id,
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container=container_name,
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backup_id=fake.BACKUP2_ID,
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parent_id=fake.BACKUP_ID)
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service = nfs.NFSBackupDriver(self.ctxt)
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self.volume_file.seek(0)
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deltabackup = objects.Backup.get_by_id(self.ctxt, fake.BACKUP2_ID)
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service.backup(deltabackup, self.volume_file)
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deltabackup = objects.Backup.get_by_id(self.ctxt, fake.BACKUP2_ID)
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self.assertEqual(deltabackup['container'], container_name)
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content1 = service._read_sha256file(backup)
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content2 = service._read_sha256file(deltabackup)
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# Verify that two shas are changed at index 16 and 20
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self.assertNotEqual(content1['sha256s'][16], content2['sha256s'][16])
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self.assertNotEqual(content1['sha256s'][20], content2['sha256s'][20])
|
|
|
|
def test_backup_delta_two_blocks_in_object_change(self):
|
|
volume_id = fake.VOLUME_ID
|
|
|
|
def _fake_generate_object_name_prefix(self, backup):
|
|
az = 'az_fake'
|
|
backup_name = '%s_backup_%s' % (az, backup['id'])
|
|
volume = 'volume_%s' % (backup['volume_id'])
|
|
prefix = volume + '_' + backup_name
|
|
return prefix
|
|
|
|
self.mock_object(nfs.NFSBackupDriver,
|
|
'_generate_object_name_prefix',
|
|
_fake_generate_object_name_prefix)
|
|
|
|
self.flags(backup_file_size=(8 * 1024))
|
|
self.flags(backup_sha_block_size_bytes=1024)
|
|
|
|
container_name = self.temp_dir.replace(tempfile.gettempdir() + '/',
|
|
'', 1)
|
|
self._create_backup_db_entry(volume_id=volume_id,
|
|
container=container_name,
|
|
backup_id=fake.BACKUP_ID)
|
|
service = nfs.NFSBackupDriver(self.ctxt)
|
|
self.volume_file.seek(0)
|
|
backup = objects.Backup.get_by_id(self.ctxt, fake.BACKUP_ID)
|
|
service.backup(backup, self.volume_file)
|
|
backup = objects.Backup.get_by_id(self.ctxt, fake.BACKUP_ID)
|
|
self.assertEqual(backup['container'], container_name)
|
|
|
|
# Create incremental backup with no change to contents
|
|
self.volume_file.seek(16 * 1024)
|
|
self.volume_file.write(os.urandom(1024))
|
|
self.volume_file.seek(20 * 1024)
|
|
self.volume_file.write(os.urandom(1024))
|
|
|
|
self._create_backup_db_entry(volume_id=volume_id,
|
|
container=container_name,
|
|
backup_id=fake.BACKUP2_ID,
|
|
parent_id=fake.BACKUP_ID)
|
|
service = nfs.NFSBackupDriver(self.ctxt)
|
|
self.volume_file.seek(0)
|
|
deltabackup = objects.Backup.get_by_id(self.ctxt, fake.BACKUP2_ID)
|
|
service.backup(deltabackup, self.volume_file)
|
|
deltabackup = objects.Backup.get_by_id(self.ctxt, fake.BACKUP2_ID)
|
|
self.assertEqual(deltabackup['container'], container_name)
|
|
|
|
# Verify that two shas are changed at index 16 and 20
|
|
content1 = service._read_sha256file(backup)
|
|
content2 = service._read_sha256file(deltabackup)
|
|
self.assertNotEqual(content1['sha256s'][16], content2['sha256s'][16])
|
|
self.assertNotEqual(content1['sha256s'][20], content2['sha256s'][20])
|
|
|
|
def test_backup_backup_metadata_fail(self):
|
|
"""Test of when an exception occurs in backup().
|
|
|
|
In backup(), after an exception occurs in
|
|
self._backup_metadata(), we want to check the process of an
|
|
exception handler.
|
|
"""
|
|
volume_id = fake.VOLUME_ID
|
|
|
|
self._create_backup_db_entry(volume_id=volume_id)
|
|
self.flags(backup_compression_algorithm='none')
|
|
service = nfs.NFSBackupDriver(self.ctxt)
|
|
self.volume_file.seek(0)
|
|
backup = objects.Backup.get_by_id(self.ctxt, fake.BACKUP_ID)
|
|
|
|
def fake_backup_metadata(self, backup, object_meta):
|
|
raise exception.BackupDriverException(message=_('fake'))
|
|
|
|
# Raise a pseudo exception.BackupDriverException.
|
|
self.mock_object(nfs.NFSBackupDriver, '_backup_metadata',
|
|
fake_backup_metadata)
|
|
|
|
# We expect that an exception be notified directly.
|
|
self.assertRaises(exception.BackupDriverException,
|
|
service.backup,
|
|
backup, self.volume_file)
|
|
|
|
def test_backup_backup_metadata_fail2(self):
|
|
"""Test of when an exception occurs in an exception handler.
|
|
|
|
In backup(), after an exception occurs in
|
|
self._backup_metadata(), we want to check the process when the
|
|
second exception occurs in self.delete_backup().
|
|
"""
|
|
volume_id = fake.VOLUME_ID
|
|
|
|
self._create_backup_db_entry(volume_id=volume_id)
|
|
self.flags(backup_compression_algorithm='none')
|
|
service = nfs.NFSBackupDriver(self.ctxt)
|
|
self.volume_file.seek(0)
|
|
backup = objects.Backup.get_by_id(self.ctxt, fake.BACKUP_ID)
|
|
|
|
def fake_backup_metadata(self, backup, object_meta):
|
|
raise exception.BackupDriverException(message=_('fake'))
|
|
|
|
# Raise a pseudo exception.BackupDriverException.
|
|
self.mock_object(nfs.NFSBackupDriver, '_backup_metadata',
|
|
fake_backup_metadata)
|
|
|
|
def fake_delete(self, backup):
|
|
raise exception.BackupOperationError()
|
|
|
|
# Raise a pseudo exception.BackupOperationError.
|
|
self.mock_object(nfs.NFSBackupDriver, 'delete_backup', fake_delete)
|
|
|
|
# We expect that the second exception is notified.
|
|
self.assertRaises(exception.BackupOperationError,
|
|
service.backup,
|
|
backup, self.volume_file)
|
|
|
|
def test_restore_uncompressed(self):
|
|
volume_id = fake.VOLUME_ID
|
|
|
|
self._create_backup_db_entry(volume_id=volume_id)
|
|
self.flags(backup_compression_algorithm='none')
|
|
self.flags(backup_sha_block_size_bytes=32)
|
|
service = nfs.NFSBackupDriver(self.ctxt)
|
|
self.volume_file.seek(0)
|
|
backup = objects.Backup.get_by_id(self.ctxt, fake.BACKUP_ID)
|
|
|
|
service.backup(backup, self.volume_file)
|
|
|
|
with tempfile.NamedTemporaryFile() as restored_file:
|
|
backup = objects.Backup.get_by_id(self.ctxt, fake.BACKUP_ID)
|
|
service.restore(backup, volume_id, restored_file)
|
|
self.assertTrue(filecmp.cmp(self.volume_file.name,
|
|
restored_file.name))
|
|
|
|
def test_restore_bz2(self):
|
|
volume_id = fake.VOLUME_ID
|
|
|
|
self._create_backup_db_entry(volume_id=volume_id)
|
|
self.flags(backup_compression_algorithm='bz2')
|
|
self.flags(backup_file_size=(1024 * 3))
|
|
self.flags(backup_sha_block_size_bytes=1024)
|
|
service = nfs.NFSBackupDriver(self.ctxt)
|
|
self.volume_file.seek(0)
|
|
backup = objects.Backup.get_by_id(self.ctxt, fake.BACKUP_ID)
|
|
service.backup(backup, self.volume_file)
|
|
|
|
with tempfile.NamedTemporaryFile() as restored_file:
|
|
backup = objects.Backup.get_by_id(self.ctxt, fake.BACKUP_ID)
|
|
service.restore(backup, volume_id, restored_file)
|
|
self.assertTrue(filecmp.cmp(self.volume_file.name,
|
|
restored_file.name))
|
|
|
|
def test_restore_zlib(self):
|
|
volume_id = fake.VOLUME_ID
|
|
|
|
self._create_backup_db_entry(volume_id=volume_id)
|
|
self.flags(backup_compression_algorithm='zlib')
|
|
self.flags(backup_file_size=(1024 * 3))
|
|
self.flags(backup_sha_block_size_bytes=1024)
|
|
service = nfs.NFSBackupDriver(self.ctxt)
|
|
self.volume_file.seek(0)
|
|
backup = objects.Backup.get_by_id(self.ctxt, fake.BACKUP_ID)
|
|
service.backup(backup, self.volume_file)
|
|
|
|
with tempfile.NamedTemporaryFile() as restored_file:
|
|
backup = objects.Backup.get_by_id(self.ctxt, fake.BACKUP_ID)
|
|
service.restore(backup, volume_id, restored_file)
|
|
self.assertTrue(filecmp.cmp(self.volume_file.name,
|
|
restored_file.name))
|
|
|
|
def test_restore_delta(self):
|
|
volume_id = fake.VOLUME_ID
|
|
|
|
def _fake_generate_object_name_prefix(self, backup):
|
|
az = 'az_fake'
|
|
backup_name = '%s_backup_%s' % (az, backup['id'])
|
|
volume = 'volume_%s' % (backup['volume_id'])
|
|
prefix = volume + '_' + backup_name
|
|
return prefix
|
|
|
|
self.mock_object(nfs.NFSBackupDriver,
|
|
'_generate_object_name_prefix',
|
|
_fake_generate_object_name_prefix)
|
|
|
|
self.flags(backup_file_size=(1024 * 8))
|
|
self.flags(backup_sha_block_size_bytes=1024)
|
|
|
|
container_name = self.temp_dir.replace(tempfile.gettempdir() + '/',
|
|
'', 1)
|
|
self._create_backup_db_entry(volume_id=volume_id,
|
|
container=container_name,
|
|
backup_id=fake.BACKUP_ID)
|
|
service = nfs.NFSBackupDriver(self.ctxt)
|
|
self.volume_file.seek(0)
|
|
backup = objects.Backup.get_by_id(self.ctxt, fake.BACKUP_ID)
|
|
service.backup(backup, self.volume_file)
|
|
|
|
# Create incremental backup with no change to contents
|
|
self.volume_file.seek(16 * 1024)
|
|
self.volume_file.write(os.urandom(1024))
|
|
self.volume_file.seek(20 * 1024)
|
|
self.volume_file.write(os.urandom(1024))
|
|
|
|
self._create_backup_db_entry(volume_id=volume_id,
|
|
container=container_name,
|
|
backup_id=fake.BACKUP2_ID,
|
|
parent_id=fake.BACKUP_ID)
|
|
self.volume_file.seek(0)
|
|
deltabackup = objects.Backup.get_by_id(self.ctxt, fake.BACKUP2_ID)
|
|
service.backup(deltabackup, self.volume_file, True)
|
|
deltabackup = objects.Backup.get_by_id(self.ctxt, fake.BACKUP2_ID)
|
|
|
|
with tempfile.NamedTemporaryFile() as restored_file:
|
|
backup = objects.Backup.get_by_id(self.ctxt, fake.BACKUP2_ID)
|
|
service.restore(backup, volume_id,
|
|
restored_file)
|
|
self.assertTrue(filecmp.cmp(self.volume_file.name,
|
|
restored_file.name))
|
|
|
|
def test_delete(self):
|
|
volume_id = fake.VOLUME_ID
|
|
self._create_backup_db_entry(volume_id=volume_id)
|
|
service = nfs.NFSBackupDriver(self.ctxt)
|
|
backup = objects.Backup.get_by_id(self.ctxt, fake.BACKUP_ID)
|
|
service.delete_backup(backup)
|
|
|
|
def test_get_compressor(self):
|
|
service = nfs.NFSBackupDriver(self.ctxt)
|
|
compressor = service._get_compressor('None')
|
|
self.assertIsNone(compressor)
|
|
compressor = service._get_compressor('zlib')
|
|
self.assertEqual(compressor, zlib)
|
|
compressor = service._get_compressor('bz2')
|
|
self.assertEqual(compressor, bz2)
|
|
self.assertRaises(ValueError, service._get_compressor, 'fake')
|
|
|
|
def create_buffer(self, size):
|
|
# Set up buffer of zeroed bytes
|
|
fake_data = bytearray(size)
|
|
if six.PY2:
|
|
# On Python 2, zlib.compressor() accepts buffer, but not bytearray
|
|
# NOTE(jsbryant): Pep8 fails on py3 based installations as buffer()
|
|
# was removed. 'noqa' used here to avoid that failure.
|
|
fake_data = buffer(fake_data) # noqa
|
|
return fake_data
|
|
|
|
def test_prepare_output_data_effective_compression(self):
|
|
service = nfs.NFSBackupDriver(self.ctxt)
|
|
fake_data = self.create_buffer(128)
|
|
result = service._prepare_output_data(fake_data)
|
|
|
|
self.assertEqual('zlib', result[0])
|
|
self.assertGreater(len(fake_data), len(result))
|
|
|
|
def test_prepare_output_data_no_compresssion(self):
|
|
self.flags(backup_compression_algorithm='none')
|
|
service = nfs.NFSBackupDriver(self.ctxt)
|
|
fake_data = self.create_buffer(128)
|
|
|
|
result = service._prepare_output_data(fake_data)
|
|
|
|
self.assertEqual('none', result[0])
|
|
self.assertEqual(fake_data, result[1])
|
|
|
|
def test_prepare_output_data_ineffective_compression(self):
|
|
service = nfs.NFSBackupDriver(self.ctxt)
|
|
fake_data = self.create_buffer(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])
|