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# Copyright 2012 Michael Still and Canonical Inc
# 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.
import os
import tempfile
import mock
from oslo_config import cfg
from oslo_utils import fileutils
from nova import context
from nova import test
from nova.tests.unit import fake_instance
from nova import utils
from nova.virt import configdrive
CONF = cfg.CONF
class FakeInstanceMD(object):
def metadata_for_config_drive(self):
yield ('this/is/a/path/hello', 'This is some content')
yield ('this/is/a/path/hi', b'This is some other content')
class ConfigDriveTestCase(test.NoDBTestCase):
@mock.patch('oslo_concurrency.processutils.execute', return_value=None)
def test_create_configdrive_iso(self, mock_execute):
CONF.set_override('config_drive_format', 'iso9660')
imagefile = None
try:
with configdrive.ConfigDriveBuilder(FakeInstanceMD()) as c:
(fd, imagefile) = tempfile.mkstemp(prefix='cd_iso_')
os.close(fd)
c.make_drive(imagefile)
mock_execute.assert_called_once_with('genisoimage', '-o',
mock.ANY,
'-ldots', '-allow-lowercase',
'-allow-multidot', '-l',
'-publisher',
mock.ANY,
'-quiet', '-J', '-r',
'-V', 'config-2',
mock.ANY,
attempts=1,
run_as_root=False)
finally:
if imagefile:
fileutils.delete_if_exists(imagefile)
@mock.patch('nova.privsep.fs.unprivileged_mkfs', return_value=None)
@mock.patch('nova.privsep.fs.mount', return_value=('', ''))
@mock.patch('nova.privsep.fs.umount', return_value=None)
def test_create_configdrive_vfat(
self, mock_umount, mock_mount, mock_mkfs):
CONF.set_override('config_drive_format', 'vfat')
imagefile = None
try:
with configdrive.ConfigDriveBuilder(FakeInstanceMD()) as c:
(fd, imagefile) = tempfile.mkstemp(prefix='cd_vfat_')
os.close(fd)
c.make_drive(imagefile)
mock_mkfs.assert_called_once_with('vfat', mock.ANY,
label='config-2')
mock_mount.assert_called_once()
mock_umount.assert_called_once()
# NOTE(mikal): we can't check for a VFAT output here because the
# filesystem creation stuff has been mocked out because it
# requires root permissions
finally:
if imagefile:
fileutils.delete_if_exists(imagefile)
def test_config_drive_required_by_image_property(self):
inst = fake_instance.fake_instance_obj(context.get_admin_context())
inst.config_drive = ''
inst.system_metadata = {
utils.SM_IMAGE_PROP_PREFIX + 'img_config_drive': 'mandatory'}
self.assertTrue(configdrive.required_by(inst))
inst.system_metadata = {
utils.SM_IMAGE_PROP_PREFIX + 'img_config_drive': 'optional'}
self.assertFalse(configdrive.required_by(inst))
@mock.patch.object(configdrive, 'required_by', return_value=False)
def test_config_drive_update_instance_required_by_false(self,
mock_required):
inst = fake_instance.fake_instance_obj(context.get_admin_context())
inst.config_drive = ''
configdrive.update_instance(inst)
self.assertEqual('', inst.config_drive)
inst.config_drive = True
configdrive.update_instance(inst)
self.assertTrue(inst.config_drive)
@mock.patch.object(configdrive, 'required_by', return_value=True)
def test_config_drive_update_instance(self, mock_required):
inst = fake_instance.fake_instance_obj(context.get_admin_context())
inst.config_drive = ''
configdrive.update_instance(inst)
self.assertTrue(inst.config_drive)
inst.config_drive = True
configdrive.update_instance(inst)
self.assertTrue(inst.config_drive)
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