def fetch_image(context, target, image_id, user_id, project_id, max_size=0):
"""Grab image."""
images.fetch_to_raw(context,
image_id,
target,
user_id,
project_id,
max_size=max_size)
def test_fetch_raw_image(self):
def fake_execute(*cmd, **kwargs):
self.executes.append(cmd)
return None, None
def fake_rename(old, new):
self.executes.append(('mv', old, new))
def fake_unlink(path):
self.executes.append(('rm', path))
def fake_rm_on_error(path, remove=None):
self.executes.append(('rm', '-f', path))
def fake_qemu_img_info(path):
class FakeImgInfo(object):
pass
file_format = path.split('.')[-1]
if file_format == 'part':
file_format = path.split('.')[-2]
elif file_format == 'converted':
file_format = 'raw'
if 'backing' in path:
backing_file = 'backing'
else:
backing_file = None
if 'big' in path:
virtual_size = 2
else:
virtual_size = 1
FakeImgInfo.file_format = file_format
FakeImgInfo.backing_file = backing_file
FakeImgInfo.virtual_size = virtual_size
return FakeImgInfo()
self.stubs.Set(utils, 'execute', fake_execute)
self.stubs.Set(os, 'rename', fake_rename)
self.stubs.Set(os, 'unlink', fake_unlink)
self.stubs.Set(images, 'fetch', lambda *_, **__: None)
self.stubs.Set(images, 'qemu_img_info', fake_qemu_img_info)
self.stubs.Set(fileutils, 'delete_if_exists', fake_rm_on_error)
# Since the remove param of fileutils.remove_path_on_error()
# is initialized at load time, we must provide a wrapper
# that explicitly resets it to our fake delete_if_exists()
old_rm_path_on_error = fileutils.remove_path_on_error
f = functools.partial(old_rm_path_on_error, remove=fake_rm_on_error)
self.stubs.Set(fileutils, 'remove_path_on_error', f)
context = 'opaque context'
image_id = '4'
user_id = 'fake'
project_id = 'fake'
target = 't.qcow2'
self.executes = []
expected_commands = [('qemu-img', 'convert', '-O', 'raw',
't.qcow2.part', 't.qcow2.converted'),
('rm', 't.qcow2.part'),
('mv', 't.qcow2.converted', 't.qcow2')]
images.fetch_to_raw(context, image_id, target, user_id, project_id,
max_size=1)
self.assertEqual(self.executes, expected_commands)
target = 't.raw'
self.executes = []
expected_commands = [('mv', 't.raw.part', 't.raw')]
images.fetch_to_raw(context, image_id, target, user_id, project_id)
self.assertEqual(self.executes, expected_commands)
target = 'backing.qcow2'
self.executes = []
expected_commands = [('rm', '-f', 'backing.qcow2.part')]
self.assertRaises(exception.ImageUnacceptable,
images.fetch_to_raw,
context, image_id, target, user_id, project_id)
self.assertEqual(self.executes, expected_commands)
target = 'big.qcow2'
self.executes = []
expected_commands = [('rm', '-f', 'big.qcow2.part')]
self.assertRaises(exception.FlavorDiskTooSmall,
images.fetch_to_raw,
context, image_id, target, user_id, project_id,
max_size=1)
self.assertEqual(self.executes, expected_commands)
del self.executes
def test_fetch_raw_image(self):
def fake_execute(*cmd, **kwargs):
self.executes.append(cmd)
return None, None
def fake_rename(old, new):
self.executes.append(('mv', old, new))
def fake_unlink(path):
self.executes.append(('rm', path))
def fake_rm_on_error(path, remove=None):
self.executes.append(('rm', '-f', path))
def fake_qemu_img_info(path):
class FakeImgInfo(object):
pass
file_format = path.split('.')[-1]
if file_format == 'part':
file_format = path.split('.')[-2]
elif file_format == 'converted':
file_format = 'raw'
if 'backing' in path:
backing_file = 'backing'
else:
backing_file = None
if 'big' in path:
virtual_size = 2
else:
virtual_size = 1
FakeImgInfo.file_format = file_format
FakeImgInfo.backing_file = backing_file
FakeImgInfo.virtual_size = virtual_size
return FakeImgInfo()
self.stubs.Set(utils, 'execute', fake_execute)
self.stubs.Set(os, 'rename', fake_rename)
self.stubs.Set(os, 'unlink', fake_unlink)
self.stubs.Set(images, 'fetch', lambda *_, **__: None)
self.stubs.Set(images, 'qemu_img_info', fake_qemu_img_info)
self.stubs.Set(fileutils, 'delete_if_exists', fake_rm_on_error)
# Since the remove param of fileutils.remove_path_on_error()
# is initialized at load time, we must provide a wrapper
# that explicitly resets it to our fake delete_if_exists()
old_rm_path_on_error = fileutils.remove_path_on_error
f = functools.partial(old_rm_path_on_error, remove=fake_rm_on_error)
self.stubs.Set(fileutils, 'remove_path_on_error', f)
context = 'opaque context'
image_id = '4'
user_id = 'fake'
project_id = 'fake'
target = 't.qcow2'
self.executes = []
expected_commands = [('qemu-img', 'convert', '-O', 'raw',
't.qcow2.part', 't.qcow2.converted'),
('rm', 't.qcow2.part'),
('mv', 't.qcow2.converted', 't.qcow2')]
images.fetch_to_raw(context,
image_id,
target,
user_id,
project_id,
max_size=1)
self.assertEqual(self.executes, expected_commands)
target = 't.raw'
self.executes = []
expected_commands = [('mv', 't.raw.part', 't.raw')]
images.fetch_to_raw(context, image_id, target, user_id, project_id)
self.assertEqual(self.executes, expected_commands)
target = 'backing.qcow2'
self.executes = []
expected_commands = [('rm', '-f', 'backing.qcow2.part')]
self.assertRaises(exception.ImageUnacceptable, images.fetch_to_raw,
context, image_id, target, user_id, project_id)
self.assertEqual(self.executes, expected_commands)
target = 'big.qcow2'
self.executes = []
expected_commands = [('rm', '-f', 'big.qcow2.part')]
self.assertRaises(exception.FlavorDiskTooSmall,
images.fetch_to_raw,
context,
image_id,
target,
user_id,
project_id,
max_size=1)
self.assertEqual(self.executes, expected_commands)
del self.executes
def fetch_image(context, target, image_id, user_id, project_id, max_size=0):
"""Grab image."""
images.fetch_to_raw(context, image_id, target, user_id, project_id,
max_size=max_size)