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# Copyright 2017 Citrix Systems
#
# 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 mock
import eventlet
from six.moves import http_client as httplib
import tarfile
from os_xenapi.client import exception
from os_xenapi.client.image import vdi_handler
from os_xenapi.client.image import vhd_utils
from os_xenapi.client import utils
from os_xenapi.tests import base
class ImageStreamToVDIsTestCase(base.TestCase):
def setUp(self):
super(ImageStreamToVDIsTestCase, self).setUp()
self.context = mock.Mock()
self.session = mock.Mock()
self.instance = {'name': 'instance-001'}
self.host_url = "http://fake-host.com"
self.sr_ref = "fake-sr-ref"
self.stream = mock.Mock()
@mock.patch.object(tarfile, 'open')
@mock.patch.object(vhd_utils, 'VHDFileParser')
@mock.patch.object(vdi_handler.ImageStreamToVDIs, '_createVDI',
return_value='fake_vdi_ref')
@mock.patch.object(vdi_handler.ImageStreamToVDIs, '_vhd_stream_to_vdi')
def test_start(self, mock_to_vdi, mock_createVDI,
mock_get_parser, mock_open):
self.session.task.create.return_value = 'fake-task-ref'
mock_footer = mock.Mock(current_size=1073741824)
mock_parser = mock.Mock()
mock_get_parser.return_value = mock_parser
mock_parser.parse_vhd_footer.return_value = mock_footer
fake_vhd_info = mock.Mock()
fake_vhd_info.size = 29371904
fake_vhd_info.name = '0.vhd'
mock_tarfile = mock.MagicMock()
mock_tarfile.__enter__.return_value = mock_tarfile
mock_tarfile.__iter__.return_value = [fake_vhd_info]
mock_open.return_value = mock_tarfile
mock_tarfile.extractfile.return_value = 'fake-file-obj'
image_cmd = vdi_handler.ImageStreamToVDIs(self.context, self.session,
self.instance, self.host_url,
self.sr_ref, self.stream)
image_cmd.start()
self.session.task.create.assert_called_once_with(
'VDI_IMPORT_for_instance-001',
'Importing VDI for instance: instance-001')
mock_open.assert_called_once_with(mode="r|gz", fileobj=self.stream)
mock_tarfile.extractfile.assert_called_once_with(fake_vhd_info)
mock_createVDI.assert_called_once_with(self.session, self.instance,
1073741824)
mock_to_vdi.assert_called_once_with(mock_parser, 'fake_vdi_ref',
29371904)
self.session.VDI.get_uuid.assert_called_once_with('fake_vdi_ref')
@mock.patch.object(utils, 'create_vdi',
return_value='fake-vdi-ref')
def test_createVDI(self, mock_create_vdi):
virtual_size = 1073741824
image_cmd = vdi_handler.ImageStreamToVDIs(self.context, self.session,
self.instance, self.host_url,
self.sr_ref, self.stream)
expect_result = 'fake-vdi-ref'
result = image_cmd._createVDI(self.session, self.instance,
virtual_size)
mock_create_vdi.assert_called_once_with(self.session, 'fake-sr-ref',
self.instance, 'instance-001',
'root', virtual_size)
self.session.VDI.get_uuid.assert_called_once_with('fake-vdi-ref')
self.assertEqual(expect_result, result)
@mock.patch.object(utils, 'get_vdi_import_path',
return_value='fake-path')
@mock.patch.object(httplib.HTTPConnection, 'connect')
@mock.patch.object(httplib.HTTPConnection, 'request')
@mock.patch.object(httplib.HTTPConnection, 'send')
@mock.patch.object(httplib.HTTPConnection, 'getresponse')
@mock.patch.object(httplib.HTTPConnection, 'close')
def test_vhd_stream_to_vdi(self, conn_close, conn_getRes, conn_send,
conn_req, conn_connect, get_path):
vdh_stream = mock.Mock()
cache_size = 4 * 1024
remain_size = vdi_handler.CHUNK_SIZE / 2
file_size = cache_size + vdi_handler.CHUNK_SIZE * 2 + remain_size
headers = {'Content-Type': 'application/octet-stream',
'Content-Length': '%s' % file_size}
image_cmd = vdi_handler.ImageStreamToVDIs(self.context, self.session,
self.instance, self.host_url,
self.sr_ref, self.stream)
mock_parser = mock.Mock()
mock_parser.cached_buff = b'\x00' * cache_size
mock_parser.src_file = vdh_stream
image_cmd.task_ref = 'fake-task-ref'
vdh_stream.read.side_effect = ['chunk1', 'chunk2', 'chunk3']
image_cmd._vhd_stream_to_vdi(mock_parser, 'fake_vdi_ref', file_size)
conn_connect.assert_called_once_with()
get_path.assert_called_once_with(self.session, 'fake-task-ref',
'fake_vdi_ref')
conn_connect.assert_called_once_with()
conn_req.assert_called_once_with('PUT', 'fake-path', headers=headers)
expect_send_calls = [mock.call(mock_parser.cached_buff),
mock.call('chunk1'),
mock.call('chunk2'),
mock.call('chunk3'),
]
conn_send.assert_has_calls(expect_send_calls)
conn_getRes.assert_called_once_with()
conn_close.assert_called_once_with()
@mock.patch.object(utils, 'get_vdi_import_path',
return_value='fake-path')
@mock.patch.object(httplib.HTTPConnection, 'connect')
@mock.patch.object(httplib.HTTPConnection, 'request',
side_effect=Exception)
@mock.patch.object(httplib.HTTPConnection, 'send')
@mock.patch.object(httplib.HTTPConnection, 'getresponse')
@mock.patch.object(httplib.HTTPConnection, 'close')
def test_vhd_stream_to_vdi_put_except(self, conn_close, conn_getRes,
conn_send, conn_req, conn_connect,
get_path):
vdh_stream = mock.Mock()
cache_size = 4 * 1024
remain_size = vdi_handler.CHUNK_SIZE / 2
file_size = cache_size + vdi_handler.CHUNK_SIZE * 2 + remain_size
image_cmd = vdi_handler.ImageStreamToVDIs(self.context, self.session,
self.instance, self.host_url,
self.sr_ref, self.stream)
mock_parser = mock.Mock()
mock_parser.cached_buff = b'\x00' * cache_size
mock_parser.src_file = vdh_stream
image_cmd.task_ref = 'fake-task-ref'
vdh_stream.read.return_value = ['chunk1', 'chunk2', 'chunk3']
self.assertRaises(exception.VdiImportFailure,
image_cmd._vhd_stream_to_vdi, mock_parser,
'fake_vdi_ref', file_size)
@mock.patch.object(utils, 'get_vdi_import_path',
return_value='fake-path')
@mock.patch.object(httplib.HTTPConnection, 'connect',
side_effect=Exception)
@mock.patch.object(httplib.HTTPConnection, 'request')
@mock.patch.object(httplib.HTTPConnection, 'send')
@mock.patch.object(httplib.HTTPConnection, 'getresponse')
@mock.patch.object(httplib.HTTPConnection, 'close')
def test_vhd_stream_to_vdi_conn_except(self, conn_close, conn_getRes,
conn_send, conn_req, conn_connect,
get_path):
vdh_stream = mock.Mock()
cache_size = 4 * 1024
remain_size = vdi_handler.CHUNK_SIZE / 2
file_size = cache_size + vdi_handler.CHUNK_SIZE * 2 + remain_size
image_cmd = vdi_handler.ImageStreamToVDIs(self.context, self.session,
self.instance, self.host_url,
self.sr_ref, self.stream)
mock_parser = mock.Mock()
mock_parser.cached_buff = b'\x00' * cache_size
mock_parser.src_file = vdh_stream
image_cmd.task_ref = 'fake-task-ref'
vdh_stream.read.return_value = ['chunk1', 'chunk2', 'chunk3']
self.assertRaises(exception.HostConnectionFailure,
image_cmd._vhd_stream_to_vdi, mock_parser,
'fake_vdi_ref', file_size)
class GenerateImageStreamTestCase(base.TestCase):
def setUp(self):
super(GenerateImageStreamTestCase, self).setUp()
self.context = mock.Mock()
self.session = mock.Mock()
self.instance = {'name': 'instance-001'}
self.host_url = "http://fake-host.com"
self.stream = mock.Mock()
@mock.patch.object(utils, 'create_pipe')
@mock.patch.object(eventlet.GreenPool, 'spawn')
@mock.patch.object(vdi_handler.GenerateImageStream,
'start_image_stream_generator')
@mock.patch.object(eventlet.GreenPool, 'waitall')
def test_get_image_data(self, mock_waitall, mock_start, mock_spawn,
create_pipe):
mock_tarpipe_out = mock.Mock()
mock_tarpipe_in = mock.Mock()
create_pipe.return_value = (mock_tarpipe_out, mock_tarpipe_in)
image_cmd = vdi_handler.GenerateImageStream(
self.context, self.session, self.instance,
self.host_url, ['vdi_uuid'])
mock_tarpipe_out.read.side_effect = ['chunk1', 'chunk2', '']
image_chunks = []
for chunk in image_cmd.get_image_data():
image_chunks.append(chunk)
create_pipe.assert_called_once_with()
mock_spawn.assert_called_once_with(mock_start, mock_tarpipe_in)
self.assertEqual(image_chunks, ['chunk1', 'chunk2'])
@mock.patch.object(vdi_handler, 'VdisToTarStream')
def test_start_stream_generator(self, mock_stream):
# Verify the specified compress level should be used,
# if a compresslevel specified in GenerateImageStream.
compr_level = 9
mock_stream_obj = mock.Mock()
mock_stream.return_value = mock_stream_obj
generator = vdi_handler.GenerateImageStream(
self.context, self.session, self.instance,
self.host_url, ['vdi_uuid'], compresslevel=compr_level)
fake_tarpipe_in = mock.Mock()
generator.start_image_stream_generator(fake_tarpipe_in)
mock_stream.assert_called_once_with(
self.context, self.session, self.instance,
self.host_url, ['vdi_uuid'],
fake_tarpipe_in, compr_level)
mock_stream_obj.start.assert_called_once_with()
fake_tarpipe_in.close.assert_called_once_with()
@mock.patch.object(vdi_handler, 'VdisToTarStream')
def test_start_stream_generator_abnormal_level(self, mock_stream):
# Verify the vdi_handler.DEFAULT_COMPRESSLEVEL should be used,
# if the compresslevel specified in GenerateImageStream
# is abnormal value (not in 1 - 9).
compr_level = 10
mock_stream_obj = mock.Mock()
mock_stream.return_value = mock_stream_obj
generator = vdi_handler.GenerateImageStream(
self.context, self.session, self.instance,
self.host_url, ['vdi_uuid'], compresslevel=compr_level)
fake_tarpipe_in = mock.Mock()
generator.start_image_stream_generator(fake_tarpipe_in)
mock_stream.assert_called_once_with(
self.context, self.session, self.instance,
self.host_url, ['vdi_uuid'],
fake_tarpipe_in, vdi_handler.DEFAULT_COMPRESSLEVEL)
mock_stream_obj.start.assert_called_once_with()
fake_tarpipe_in.close.assert_called_once_with()
@mock.patch.object(vdi_handler, 'VdisToTarStream')
def test_start_stream_generator_none_level(self, mock_stream):
# Verify the vdi_handler.DEFAULT_COMPRESSLEVEL should be used,
# if no compresslevel specified in GenerateImageStream.
mock_stream_obj = mock.Mock()
mock_stream.return_value = mock_stream_obj
generator = vdi_handler.GenerateImageStream(
self.context, self.session, self.instance,
self.host_url, ['vdi_uuid'])
fake_tarpipe_in = mock.Mock()
generator.start_image_stream_generator(fake_tarpipe_in)
mock_stream.assert_called_once_with(
self.context, self.session, self.instance,
self.host_url, ['vdi_uuid'],
fake_tarpipe_in, vdi_handler.DEFAULT_COMPRESSLEVEL)
mock_stream_obj.start.assert_called_once_with()
fake_tarpipe_in.close.assert_called_once_with()
class VdisToTarStreamTestCase(base.TestCase):
def setUp(self):
super(VdisToTarStreamTestCase, self).setUp()
self.context = mock.Mock()
self.session = mock.Mock()
self.instance = {'name': 'instance-001'}
self.host_url = "http://fake-host.com"
self.stream = mock.Mock()
@mock.patch.object(tarfile.TarFile, 'gzopen')
@mock.patch.object(tarfile, 'TarInfo')
@mock.patch.object(vdi_handler.VdisToTarStream, '_connect_request',
return_value='fake-conn-resp')
@mock.patch.object(vhd_utils, 'VHDDynDiskParser')
@mock.patch.object(utils, 'create_pipe')
@mock.patch.object(vdi_handler.VdisToTarStream, 'convert_vhd_to_tar')
@mock.patch.object(eventlet.GreenPool, 'spawn')
@mock.patch.object(vdi_handler.VdisToTarStream, '_vhd_to_pipe')
@mock.patch.object(eventlet.GreenPool, 'waitall')
def test_start(self, mock_waitall, mock_to_pipe, mock_spawn,
mock_convert, mock_pipe, mock_parser,
mock_conn_req, mock_tarinfo, mock_open):
mock_tarfile = mock.MagicMock()
mock_tarfile.__enter__.return_value = mock_tarfile
mock_open.return_value = mock_tarfile
mock_tarinfo.return_value = mock.sentinel.tar_info
self.session.VDI.get_by_uuid.return_value = 'fake-vdi-ref'
mock_dynDisk = mock.Mock()
mock_parser.return_value = mock_dynDisk
mock_dynDisk.get_vhd_file_size.return_value = 29371904
vdi_uuids = ['vdi-uuid']
vhdpipe_in = mock.Mock()
mock_pipe.return_value = ('vhdpipe_out', vhdpipe_in)
compr_level = 5
image_cmd = vdi_handler.VdisToTarStream(
self.context, self.session, self.instance,
self.host_url, vdi_uuids, self.stream, compr_level)
image_cmd.start()
mock_open.assert_called_once_with(name=None, fileobj=self.stream,
mode='w', compresslevel=compr_level)
self.session.VDI.get_by_uuid.assert_called_once_with('vdi-uuid')
mock_conn_req.assert_called_once_with('fake-vdi-ref')
mock_dynDisk.get_vhd_file_size.assert_called_once_with()
mock_pipe.assert_called_once_with()
mock_spawn.assert_called_once_with(mock_convert, 'vhdpipe_out',
mock_tarfile,
mock.sentinel.tar_info)
mock_to_pipe.assert_called_once_with(mock_dynDisk, vhdpipe_in)
vhdpipe_in.close.asset_called_once_with()
mock_waitall.assert_called_once_with()
class AddVhdToTarTestCase(base.TestCase):
def setUp(self):
super(AddVhdToTarTestCase, self).setUp()
self.context = mock.Mock()
self.session = mock.Mock()
self.instance = {'name': 'instance-001'}
self.host_url = "http://fake-host.com"
self.stream = mock.Mock()
def test_add_stream_to_tar(self):
mock_tar_file = mock.Mock()
mock_tar_info = mock.Mock()
mock_tar_info.size = 8196
mock_tar_info.name = '0.vhd'
image_cmd = vdi_handler.AddVhdToTar(mock_tar_file, mock_tar_info,
'fake-vhdpipe-out')
image_cmd.start()
mock_tar_file.addfile.assert_called_once_with(
mock_tar_info, fileobj='fake-vhdpipe-out')
def test_add_stream_to_tar_IOError(self):
mock_tar_file = mock.Mock()
mock_tar_info = mock.Mock()
mock_tar_info.size = 1024
mock_tar_info.name = '0.vhd'
image_cmd = vdi_handler.AddVhdToTar(mock_tar_file, mock_tar_info,
'fake-vhdpipe-out')
mock_tar_file.addfile.side_effect = IOError
self.assertRaises(IOError, image_cmd.start)
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