/usr/lib/python2.7/dist-packages/glance_store/tests/unit/test_cinder_store.py is in python-glance-store 0.18.0-2.
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# 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 contextlib
import errno
import hashlib
import mock
import os
import six
import socket
import tempfile
import time
import uuid
from os_brick.initiator import connector
from oslo_concurrency import processutils
from oslo_utils import units
from glance_store._drivers import cinder
from glance_store import exceptions
from glance_store import location
from glance_store.tests import base
from glance_store.tests.unit import test_store_capabilities
class FakeObject(object):
def __init__(self, **kwargs):
for name, value in six.iteritems(kwargs):
setattr(self, name, value)
class TestCinderStore(base.StoreBaseTest,
test_store_capabilities.TestStoreCapabilitiesChecking):
def setUp(self):
super(TestCinderStore, self).setUp()
self.store = cinder.Store(self.conf)
self.store.configure()
self.register_store_schemes(self.store, 'cinder')
self.store.READ_CHUNKSIZE = 4096
self.store.WRITE_CHUNKSIZE = 4096
fake_sc = [{u'endpoints': [{u'publicURL': u'http://foo/public_url'}],
u'endpoints_links': [],
u'name': u'cinder',
u'type': u'volumev2'}]
self.context = FakeObject(service_catalog=fake_sc,
user='fake_user',
auth_token='fake_token',
tenant='fake_tenant')
def test_get_cinderclient(self):
cc = cinder.get_cinderclient(self.conf, self.context)
self.assertEqual('fake_token', cc.client.auth_token)
self.assertEqual('http://foo/public_url', cc.client.management_url)
def test_get_cinderclient_with_user_overriden(self):
self.config(cinder_store_user_name='test_user')
self.config(cinder_store_password='test_password')
self.config(cinder_store_project_name='test_project')
self.config(cinder_store_auth_address='test_address')
cc = cinder.get_cinderclient(self.conf, self.context)
self.assertIsNone(cc.client.auth_token)
self.assertEqual('test_address', cc.client.management_url)
def test_temporary_chown(self):
class fake_stat(object):
st_uid = 1
with mock.patch.object(os, 'stat', return_value=fake_stat()), \
mock.patch.object(os, 'getuid', return_value=2), \
mock.patch.object(processutils, 'execute') as mock_execute, \
mock.patch.object(cinder, 'get_root_helper',
return_value='sudo'):
with cinder.temporary_chown('test'):
pass
expected_calls = [mock.call('chown', 2, 'test', run_as_root=True,
root_helper='sudo'),
mock.call('chown', 1, 'test', run_as_root=True,
root_helper='sudo')]
self.assertEqual(expected_calls, mock_execute.call_args_list)
@mock.patch.object(time, 'sleep')
def test_wait_volume_status(self, mock_sleep):
fake_manager = FakeObject(get=mock.Mock())
volume_available = FakeObject(manager=fake_manager,
id='fake-id',
status='available')
volume_in_use = FakeObject(manager=fake_manager,
id='fake-id',
status='in-use')
fake_manager.get.side_effect = [volume_available, volume_in_use]
self.assertEqual(volume_in_use,
self.store._wait_volume_status(
volume_available, 'available', 'in-use'))
fake_manager.get.assert_called_with('fake-id')
mock_sleep.assert_called_once_with(0.5)
@mock.patch.object(time, 'sleep')
def test_wait_volume_status_unexpected(self, mock_sleep):
fake_manager = FakeObject(get=mock.Mock())
volume_available = FakeObject(manager=fake_manager,
id='fake-id',
status='error')
fake_manager.get.return_value = volume_available
self.assertRaises(exceptions.BackendException,
self.store._wait_volume_status,
volume_available, 'available', 'in-use')
fake_manager.get.assert_called_with('fake-id')
@mock.patch.object(time, 'sleep')
def test_wait_volume_status_timeout(self, mock_sleep):
fake_manager = FakeObject(get=mock.Mock())
volume_available = FakeObject(manager=fake_manager,
id='fake-id',
status='available')
fake_manager.get.return_value = volume_available
self.assertRaises(exceptions.BackendException,
self.store._wait_volume_status,
volume_available, 'available', 'in-use')
fake_manager.get.assert_called_with('fake-id')
def _test_open_cinder_volume(self, open_mode, attach_mode, error):
fake_volume = mock.MagicMock(id=str(uuid.uuid4()), status='available')
fake_volumes = FakeObject(get=lambda id: fake_volume,
detach=mock.Mock())
fake_client = FakeObject(volumes=fake_volumes)
_, fake_dev_path = tempfile.mkstemp(dir=self.test_dir)
fake_devinfo = {'path': fake_dev_path}
fake_connector = FakeObject(
connect_volume=mock.Mock(return_value=fake_devinfo),
disconnect_volume=mock.Mock())
@contextlib.contextmanager
def fake_chown(path):
yield
def do_open():
with self.store._open_cinder_volume(
fake_client, fake_volume, open_mode):
if error:
raise error
def fake_factory(protocol, root_helper, **kwargs):
self.assertEqual(fake_volume.initialize_connection.return_value,
kwargs['conn'])
return fake_connector
with mock.patch.object(cinder.Store,
'_wait_volume_status',
return_value=fake_volume), \
mock.patch.object(cinder, 'temporary_chown',
side_effect=fake_chown), \
mock.patch.object(cinder, 'get_root_helper'), \
mock.patch.object(connector, 'get_connector_properties'), \
mock.patch.object(connector.InitiatorConnector, 'factory',
side_effect=fake_factory):
if error:
self.assertRaises(error, do_open)
else:
do_open()
fake_connector.connect_volume.assert_called_once_with(mock.ANY)
fake_connector.disconnect_volume.assert_called_once_with(
mock.ANY, fake_devinfo)
fake_volume.attach.assert_called_once_with(
None, None, attach_mode, host_name=socket.gethostname())
fake_volumes.detach.assert_called_once_with(fake_volume)
def test_open_cinder_volume_rw(self):
self._test_open_cinder_volume('wb', 'rw', None)
def test_open_cinder_volume_ro(self):
self._test_open_cinder_volume('rb', 'ro', None)
def test_open_cinder_volume_error(self):
self._test_open_cinder_volume('wb', 'rw', IOError)
def test_cinder_configure_add(self):
self.assertRaises(exceptions.BadStoreConfiguration,
self.store._check_context, None)
self.assertRaises(exceptions.BadStoreConfiguration,
self.store._check_context,
FakeObject(service_catalog=None))
self.store._check_context(FakeObject(service_catalog='fake'))
def test_cinder_get(self):
expected_size = 5 * units.Ki
expected_file_contents = b"*" * expected_size
volume_file = six.BytesIO(expected_file_contents)
fake_client = FakeObject(auth_token=None, management_url=None)
fake_volume_uuid = str(uuid.uuid4())
fake_volume = mock.MagicMock(id=fake_volume_uuid,
metadata={'image_size': expected_size},
status='available')
fake_volume.manager.get.return_value = fake_volume
fake_volumes = FakeObject(get=lambda id: fake_volume)
@contextlib.contextmanager
def fake_open(client, volume, mode):
self.assertEqual('rb', mode)
yield volume_file
with mock.patch.object(cinder, 'get_cinderclient') as mock_cc, \
mock.patch.object(self.store, '_open_cinder_volume',
side_effect=fake_open):
mock_cc.return_value = FakeObject(client=fake_client,
volumes=fake_volumes)
uri = "cinder://%s" % fake_volume_uuid
loc = location.get_location_from_uri(uri, conf=self.conf)
(image_file, image_size) = self.store.get(loc,
context=self.context)
expected_num_chunks = 2
data = b""
num_chunks = 0
for chunk in image_file:
num_chunks += 1
data += chunk
self.assertEqual(expected_num_chunks, num_chunks)
self.assertEqual(expected_file_contents, data)
def test_cinder_get_size(self):
fake_client = FakeObject(auth_token=None, management_url=None)
fake_volume_uuid = str(uuid.uuid4())
fake_volume = FakeObject(size=5, metadata={})
fake_volumes = {fake_volume_uuid: fake_volume}
with mock.patch.object(cinder, 'get_cinderclient') as mocked_cc:
mocked_cc.return_value = FakeObject(client=fake_client,
volumes=fake_volumes)
uri = 'cinder://%s' % fake_volume_uuid
loc = location.get_location_from_uri(uri, conf=self.conf)
image_size = self.store.get_size(loc, context=self.context)
self.assertEqual(fake_volume.size * units.Gi, image_size)
def test_cinder_get_size_with_metadata(self):
fake_client = FakeObject(auth_token=None, management_url=None)
fake_volume_uuid = str(uuid.uuid4())
expected_image_size = 4500 * units.Mi
fake_volume = FakeObject(size=5,
metadata={'image_size': expected_image_size})
fake_volumes = {fake_volume_uuid: fake_volume}
with mock.patch.object(cinder, 'get_cinderclient') as mocked_cc:
mocked_cc.return_value = FakeObject(client=fake_client,
volumes=fake_volumes)
uri = 'cinder://%s' % fake_volume_uuid
loc = location.get_location_from_uri(uri, conf=self.conf)
image_size = self.store.get_size(loc, context=self.context)
self.assertEqual(expected_image_size, image_size)
def _test_cinder_add(self, fake_volume, volume_file, size_kb=5,
verifier=None):
expected_image_id = str(uuid.uuid4())
expected_size = size_kb * units.Ki
expected_file_contents = b"*" * expected_size
image_file = six.BytesIO(expected_file_contents)
expected_checksum = hashlib.md5(expected_file_contents).hexdigest()
expected_location = 'cinder://%s' % fake_volume.id
fake_client = FakeObject(auth_token=None, management_url=None)
fake_volume.manager.get.return_value = fake_volume
fake_volumes = FakeObject(create=mock.Mock(return_value=fake_volume))
@contextlib.contextmanager
def fake_open(client, volume, mode):
self.assertEqual('wb', mode)
yield volume_file
with mock.patch.object(cinder, 'get_cinderclient') as mock_cc, \
mock.patch.object(self.store, '_open_cinder_volume',
side_effect=fake_open):
mock_cc.return_value = FakeObject(client=fake_client,
volumes=fake_volumes)
loc, size, checksum, _ = self.store.add(expected_image_id,
image_file,
expected_size,
self.context,
verifier)
self.assertEqual(expected_location, loc)
self.assertEqual(expected_size, size)
self.assertEqual(expected_checksum, checksum)
fake_volumes.create.assert_called_once_with(
1,
name='image-%s' % expected_image_id,
metadata={'image_owner': self.context.tenant,
'glance_image_id': expected_image_id,
'image_size': str(expected_size)})
def test_cinder_add(self):
fake_volume = mock.MagicMock(id=str(uuid.uuid4()), status='available')
volume_file = six.BytesIO()
self._test_cinder_add(fake_volume, volume_file)
def test_cinder_add_with_verifier(self):
fake_volume = mock.MagicMock(id=str(uuid.uuid4()), status='available')
volume_file = six.BytesIO()
verifier = mock.MagicMock()
self._test_cinder_add(fake_volume, volume_file, 1, verifier)
verifier.update.assert_called_with(b"*" * units.Ki)
def test_cinder_add_volume_full(self):
e = IOError()
volume_file = six.BytesIO()
e.errno = errno.ENOSPC
fake_volume = mock.MagicMock(id=str(uuid.uuid4()), status='available')
with mock.patch.object(volume_file, 'write', side_effect=e):
self.assertRaises(exceptions.StorageFull,
self._test_cinder_add, fake_volume, volume_file)
fake_volume.delete.assert_called_once_with()
def test_cinder_delete(self):
fake_client = FakeObject(auth_token=None, management_url=None)
fake_volume_uuid = str(uuid.uuid4())
fake_volume = FakeObject(delete=mock.Mock())
fake_volumes = {fake_volume_uuid: fake_volume}
with mock.patch.object(cinder, 'get_cinderclient') as mocked_cc:
mocked_cc.return_value = FakeObject(client=fake_client,
volumes=fake_volumes)
uri = 'cinder://%s' % fake_volume_uuid
loc = location.get_location_from_uri(uri, conf=self.conf)
self.store.delete(loc, context=self.context)
fake_volume.delete.assert_called_once_with()
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