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# Copyright 2014 IBM Corp.
#
# 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 time
from unittest import mock
from nova import exception
from nova.tests.unit.virt.hyperv import test_base
from nova.virt.hyperv import constants
from nova.virt.hyperv import pathutils
class PathUtilsTestCase(test_base.HyperVBaseTestCase):
"""Unit tests for the Hyper-V PathUtils class."""
def setUp(self):
super(PathUtilsTestCase, self).setUp()
self.fake_instance_dir = os.path.join('C:', 'fake_instance_dir')
self.fake_instance_name = 'fake_instance_name'
self._pathutils = pathutils.PathUtils()
def _mock_lookup_configdrive_path(self, ext, rescue=False):
self._pathutils.get_instance_dir = mock.MagicMock(
return_value=self.fake_instance_dir)
def mock_exists(*args, **kwargs):
path = args[0]
return True if path[(path.rfind('.') + 1):] == ext else False
self._pathutils.exists = mock_exists
configdrive_path = self._pathutils.lookup_configdrive_path(
self.fake_instance_name, rescue)
return configdrive_path
def _test_lookup_configdrive_path(self, rescue=False):
configdrive_name = 'configdrive'
if rescue:
configdrive_name += '-rescue'
for format_ext in constants.DISK_FORMAT_MAP:
configdrive_path = self._mock_lookup_configdrive_path(format_ext,
rescue)
expected_path = os.path.join(self.fake_instance_dir,
configdrive_name + '.' + format_ext)
self.assertEqual(expected_path, configdrive_path)
def test_lookup_configdrive_path(self):
self._test_lookup_configdrive_path()
def test_lookup_rescue_configdrive_path(self):
self._test_lookup_configdrive_path(rescue=True)
def test_lookup_configdrive_path_non_exist(self):
self._pathutils.get_instance_dir = mock.MagicMock(
return_value=self.fake_instance_dir)
self._pathutils.exists = mock.MagicMock(return_value=False)
configdrive_path = self._pathutils.lookup_configdrive_path(
self.fake_instance_name)
self.assertIsNone(configdrive_path)
def test_get_instances_dir_local(self):
self.flags(instances_path=self.fake_instance_dir)
instances_dir = self._pathutils.get_instances_dir()
self.assertEqual(self.fake_instance_dir, instances_dir)
def test_get_instances_dir_remote_instance_share(self):
# The Hyper-V driver allows using a pre-configured share exporting
# the instances dir. The same share name should be used across nodes.
fake_instances_dir_share = 'fake_instances_dir_share'
fake_remote = 'fake_remote'
expected_instance_dir = r'\\%s\%s' % (fake_remote,
fake_instances_dir_share)
self.flags(instances_path_share=fake_instances_dir_share,
group='hyperv')
instances_dir = self._pathutils.get_instances_dir(
remote_server=fake_remote)
self.assertEqual(expected_instance_dir, instances_dir)
def test_get_instances_dir_administrative_share(self):
self.flags(instances_path=r'C:\fake_instance_dir')
fake_remote = 'fake_remote'
expected_instance_dir = r'\\fake_remote\C$\fake_instance_dir'
instances_dir = self._pathutils.get_instances_dir(
remote_server=fake_remote)
self.assertEqual(expected_instance_dir, instances_dir)
def test_get_instances_dir_unc_path(self):
fake_instance_dir = r'\\fake_addr\fake_share\fake_instance_dir'
self.flags(instances_path=fake_instance_dir)
fake_remote = 'fake_remote'
instances_dir = self._pathutils.get_instances_dir(
remote_server=fake_remote)
self.assertEqual(fake_instance_dir, instances_dir)
@mock.patch('os.path.join')
def test_get_instances_sub_dir(self, fake_path_join):
class WindowsError(Exception):
def __init__(self, winerror=None):
self.winerror = winerror
fake_dir_name = "fake_dir_name"
fake_windows_error = WindowsError
self._pathutils.check_create_dir = mock.MagicMock(
side_effect=WindowsError(pathutils.ERROR_INVALID_NAME))
with mock.patch('builtins.WindowsError',
fake_windows_error, create=True):
self.assertRaises(exception.AdminRequired,
self._pathutils._get_instances_sub_dir,
fake_dir_name)
def test_copy_vm_console_logs(self):
fake_local_logs = [mock.sentinel.log_path,
mock.sentinel.archived_log_path]
fake_remote_logs = [mock.sentinel.remote_log_path,
mock.sentinel.remote_archived_log_path]
self._pathutils.exists = mock.Mock(return_value=True)
self._pathutils.copy = mock.Mock()
self._pathutils.get_vm_console_log_paths = mock.Mock(
side_effect=[fake_local_logs, fake_remote_logs])
self._pathutils.copy_vm_console_logs(mock.sentinel.instance_name,
mock.sentinel.dest_host)
self._pathutils.get_vm_console_log_paths.assert_has_calls(
[mock.call(mock.sentinel.instance_name),
mock.call(mock.sentinel.instance_name,
remote_server=mock.sentinel.dest_host)])
self._pathutils.copy.assert_has_calls([
mock.call(mock.sentinel.log_path,
mock.sentinel.remote_log_path),
mock.call(mock.sentinel.archived_log_path,
mock.sentinel.remote_archived_log_path)])
@mock.patch.object(pathutils.PathUtils, 'get_base_vhd_dir')
@mock.patch.object(pathutils.PathUtils, 'exists')
def test_get_image_path(self, mock_exists,
mock_get_base_vhd_dir):
fake_image_name = 'fake_image_name'
mock_exists.side_effect = [True, False]
mock_get_base_vhd_dir.return_value = 'fake_base_dir'
res = self._pathutils.get_image_path(fake_image_name)
mock_get_base_vhd_dir.assert_called_once_with()
self.assertEqual(res,
os.path.join('fake_base_dir', 'fake_image_name.vhd'))
@mock.patch('os.path.getmtime')
@mock.patch.object(pathutils, 'time')
def test_get_age_of_file(self, mock_time, mock_getmtime):
mock_time.time.return_value = time.time()
mock_getmtime.return_value = mock_time.time.return_value - 42
actual_age = self._pathutils.get_age_of_file(mock.sentinel.filename)
self.assertEqual(42, actual_age)
mock_time.time.assert_called_once_with()
mock_getmtime.assert_called_once_with(mock.sentinel.filename)
@mock.patch('os.path.exists')
@mock.patch('tempfile.NamedTemporaryFile')
def test_check_dirs_shared_storage(self, mock_named_tempfile,
mock_exists):
fake_src_dir = 'fake_src_dir'
fake_dest_dir = 'fake_dest_dir'
mock_exists.return_value = True
mock_tmpfile = mock_named_tempfile.return_value.__enter__.return_value
mock_tmpfile.name = 'fake_tmp_fname'
expected_src_tmp_path = os.path.join(fake_src_dir,
mock_tmpfile.name)
self._pathutils.check_dirs_shared_storage(
fake_src_dir, fake_dest_dir)
mock_named_tempfile.assert_called_once_with(dir=fake_dest_dir)
mock_exists.assert_called_once_with(expected_src_tmp_path)
@mock.patch('os.path.exists')
@mock.patch('tempfile.NamedTemporaryFile')
def test_check_dirs_shared_storage_exception(self, mock_named_tempfile,
mock_exists):
fake_src_dir = 'fake_src_dir'
fake_dest_dir = 'fake_dest_dir'
mock_exists.return_value = True
mock_named_tempfile.side_effect = OSError('not exist')
self.assertRaises(exception.FileNotFound,
self._pathutils.check_dirs_shared_storage,
fake_src_dir, fake_dest_dir)
@mock.patch.object(pathutils.PathUtils, 'check_dirs_shared_storage')
@mock.patch.object(pathutils.PathUtils, 'get_instances_dir')
def test_check_remote_instances_shared(self, mock_get_instances_dir,
mock_check_dirs_shared_storage):
mock_get_instances_dir.side_effect = [mock.sentinel.local_inst_dir,
mock.sentinel.remote_inst_dir]
shared_storage = self._pathutils.check_remote_instances_dir_shared(
mock.sentinel.dest)
self.assertEqual(mock_check_dirs_shared_storage.return_value,
shared_storage)
mock_get_instances_dir.assert_has_calls(
[mock.call(), mock.call(mock.sentinel.dest)])
mock_check_dirs_shared_storage.assert_called_once_with(
mock.sentinel.local_inst_dir, mock.sentinel.remote_inst_dir)
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