456 lines
16 KiB
Python
456 lines
16 KiB
Python
# Copyright 2013 OpenStack Foundation
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# All Rights Reserved.
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#
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# Licensed under the Apache License, Version 2.0 (the "License"); you may
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# not use this file except in compliance with the License. You may obtain
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# a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
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# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
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# License for the specific language governing permissions and limitations
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# under the License.
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import hashlib
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import mock
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from oslo_utils import units
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import six
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from glance_store._drivers import rbd as rbd_store
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from glance_store import exceptions
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from glance_store import location as g_location
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from glance_store.tests import base
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from glance_store.tests.unit import test_store_capabilities
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class TestException(Exception):
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pass
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class MockRados(object):
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class Error(Exception):
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pass
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class ioctx(object):
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def __init__(self, *args, **kwargs):
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pass
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def __enter__(self, *args, **kwargs):
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return self
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def __exit__(self, *args, **kwargs):
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return False
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def close(self, *args, **kwargs):
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pass
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class Rados(object):
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def __init__(self, *args, **kwargs):
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pass
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def __enter__(self, *args, **kwargs):
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return self
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def __exit__(self, *args, **kwargs):
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return False
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def connect(self, *args, **kwargs):
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pass
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def open_ioctx(self, *args, **kwargs):
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return MockRados.ioctx()
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def shutdown(self, *args, **kwargs):
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pass
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def conf_get(self, *args, **kwargs):
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pass
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class MockRBD(object):
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class ImageExists(Exception):
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pass
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class ImageHasSnapshots(Exception):
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pass
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class ImageBusy(Exception):
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pass
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class ImageNotFound(Exception):
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pass
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class InvalidArgument(Exception):
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pass
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class Image(object):
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def __init__(self, *args, **kwargs):
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pass
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def __enter__(self, *args, **kwargs):
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return self
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def __exit__(self, *args, **kwargs):
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pass
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def create_snap(self, *args, **kwargs):
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pass
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def remove_snap(self, *args, **kwargs):
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pass
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def protect_snap(self, *args, **kwargs):
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pass
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def unprotect_snap(self, *args, **kwargs):
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pass
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def read(self, *args, **kwargs):
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raise NotImplementedError()
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def write(self, *args, **kwargs):
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raise NotImplementedError()
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def resize(self, *args, **kwargs):
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raise NotImplementedError()
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def discard(self, offset, length):
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raise NotImplementedError()
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def close(self):
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pass
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def list_snaps(self):
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raise NotImplementedError()
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def parent_info(self):
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raise NotImplementedError()
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def size(self):
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raise NotImplementedError()
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class RBD(object):
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def __init__(self, *args, **kwargs):
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pass
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def __enter__(self, *args, **kwargs):
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return self
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def __exit__(self, *args, **kwargs):
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return False
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def create(self, *args, **kwargs):
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pass
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def remove(self, *args, **kwargs):
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pass
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def list(self, *args, **kwargs):
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raise NotImplementedError()
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def clone(self, *args, **kwargs):
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raise NotImplementedError()
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RBD_FEATURE_LAYERING = 1
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class TestStore(base.StoreBaseTest,
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test_store_capabilities.TestStoreCapabilitiesChecking):
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def setUp(self):
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"""Establish a clean test environment."""
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super(TestStore, self).setUp()
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rbd_store.rados = MockRados
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rbd_store.rbd = MockRBD
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self.store = rbd_store.Store(self.conf)
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self.store.configure()
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self.store.chunk_size = 2
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self.called_commands_actual = []
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self.called_commands_expected = []
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self.store_specs = {'pool': 'fake_pool',
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'image': 'fake_image',
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'snapshot': 'fake_snapshot'}
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self.location = rbd_store.StoreLocation(self.store_specs,
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self.conf)
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# Provide enough data to get more than one chunk iteration.
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self.data_len = 3 * units.Ki
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self.data_iter = six.BytesIO(b'*' * self.data_len)
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self.hash_algo = 'sha256'
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def test_add_w_image_size_zero(self):
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"""Assert that correct size is returned even though 0 was provided."""
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self.store.chunk_size = units.Ki
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with mock.patch.object(rbd_store.rbd.Image, 'resize') as resize:
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with mock.patch.object(rbd_store.rbd.Image, 'write') as write:
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ret = self.store.add(
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'fake_image_id', self.data_iter, 0, self.hash_algo)
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self.assertTrue(resize.called)
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self.assertTrue(write.called)
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self.assertEqual(ret[1], self.data_len)
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@mock.patch.object(MockRBD.Image, '__enter__')
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@mock.patch.object(rbd_store.Store, '_create_image')
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@mock.patch.object(rbd_store.Store, '_delete_image')
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def test_add_w_rbd_image_exception(self, delete, create, enter):
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def _fake_create_image(*args, **kwargs):
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self.called_commands_actual.append('create')
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return self.location
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def _fake_delete_image(target_pool, image_name, snapshot_name=None):
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self.assertEqual(self.location.pool, target_pool)
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self.assertEqual(self.location.image, image_name)
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self.assertEqual(self.location.snapshot, snapshot_name)
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self.called_commands_actual.append('delete')
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def _fake_enter(*args, **kwargs):
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raise exceptions.NotFound(image="fake_image_id")
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create.side_effect = _fake_create_image
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delete.side_effect = _fake_delete_image
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enter.side_effect = _fake_enter
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self.assertRaises(exceptions.NotFound,
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self.store.add,
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'fake_image_id', self.data_iter, self.data_len,
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self.hash_algo)
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self.called_commands_expected = ['create', 'delete']
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def test_add_duplicate_image(self):
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def _fake_create_image(*args, **kwargs):
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self.called_commands_actual.append('create')
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raise MockRBD.ImageExists()
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with mock.patch.object(self.store, '_create_image') as create_image:
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create_image.side_effect = _fake_create_image
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self.assertRaises(exceptions.Duplicate,
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self.store.add,
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'fake_image_id', self.data_iter, self.data_len,
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self.hash_algo)
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self.called_commands_expected = ['create']
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def test_add_with_verifier(self):
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"""Assert 'verifier.update' is called when verifier is provided."""
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self.store.chunk_size = units.Ki
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verifier = mock.MagicMock(name='mock_verifier')
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image_id = 'fake_image_id'
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file_size = 5 * units.Ki # 5K
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file_contents = b"*" * file_size
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image_file = six.BytesIO(file_contents)
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with mock.patch.object(rbd_store.rbd.Image, 'write'):
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self.store.add(image_id, image_file, file_size, self.hash_algo,
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verifier=verifier)
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verifier.update.assert_called_with(file_contents)
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def test_add_checksums(self):
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self.store.chunk_size = units.Ki
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image_id = 'fake_image_id'
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file_size = 5 * units.Ki # 5K
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file_contents = b"*" * file_size
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image_file = six.BytesIO(file_contents)
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expected_checksum = hashlib.md5(file_contents).hexdigest()
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expected_multihash = hashlib.sha256(file_contents).hexdigest()
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with mock.patch.object(rbd_store.rbd.Image, 'write'):
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loc, size, checksum, multihash, _ = self.store.add(
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image_id, image_file, file_size, self.hash_algo)
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self.assertEqual(expected_checksum, checksum)
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self.assertEqual(expected_multihash, multihash)
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def test_delete(self):
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def _fake_remove(*args, **kwargs):
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self.called_commands_actual.append('remove')
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with mock.patch.object(MockRBD.RBD, 'remove') as remove_image:
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remove_image.side_effect = _fake_remove
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self.store.delete(g_location.Location('test_rbd_store',
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rbd_store.StoreLocation,
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self.conf,
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uri=self.location.get_uri()))
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self.called_commands_expected = ['remove']
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def test_delete_image(self):
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def _fake_remove(*args, **kwargs):
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self.called_commands_actual.append('remove')
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with mock.patch.object(MockRBD.RBD, 'remove') as remove_image:
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remove_image.side_effect = _fake_remove
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self.store._delete_image('fake_pool', self.location.image)
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self.called_commands_expected = ['remove']
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def test_delete_image_exc_image_not_found(self):
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def _fake_remove(*args, **kwargs):
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self.called_commands_actual.append('remove')
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raise MockRBD.ImageNotFound()
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with mock.patch.object(MockRBD.RBD, 'remove') as remove:
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remove.side_effect = _fake_remove
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self.assertRaises(exceptions.NotFound, self.store._delete_image,
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'fake_pool', self.location.image)
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self.called_commands_expected = ['remove']
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@mock.patch.object(MockRBD.RBD, 'remove')
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@mock.patch.object(MockRBD.Image, 'remove_snap')
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@mock.patch.object(MockRBD.Image, 'unprotect_snap')
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def test_delete_image_w_snap(self, unprotect, remove_snap, remove):
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def _fake_unprotect_snap(*args, **kwargs):
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self.called_commands_actual.append('unprotect_snap')
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def _fake_remove_snap(*args, **kwargs):
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self.called_commands_actual.append('remove_snap')
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def _fake_remove(*args, **kwargs):
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self.called_commands_actual.append('remove')
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remove.side_effect = _fake_remove
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unprotect.side_effect = _fake_unprotect_snap
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remove_snap.side_effect = _fake_remove_snap
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self.store._delete_image('fake_pool', self.location.image,
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snapshot_name='snap')
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self.called_commands_expected = ['unprotect_snap', 'remove_snap',
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'remove']
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@mock.patch.object(MockRBD.RBD, 'remove')
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@mock.patch.object(MockRBD.Image, 'remove_snap')
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@mock.patch.object(MockRBD.Image, 'unprotect_snap')
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def test_delete_image_w_unprotected_snap(self, unprotect, remove_snap,
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remove):
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def _fake_unprotect_snap(*args, **kwargs):
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self.called_commands_actual.append('unprotect_snap')
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raise MockRBD.InvalidArgument()
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def _fake_remove_snap(*args, **kwargs):
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self.called_commands_actual.append('remove_snap')
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def _fake_remove(*args, **kwargs):
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self.called_commands_actual.append('remove')
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remove.side_effect = _fake_remove
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unprotect.side_effect = _fake_unprotect_snap
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remove_snap.side_effect = _fake_remove_snap
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self.store._delete_image('fake_pool', self.location.image,
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snapshot_name='snap')
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self.called_commands_expected = ['unprotect_snap', 'remove_snap',
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'remove']
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@mock.patch.object(MockRBD.RBD, 'remove')
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@mock.patch.object(MockRBD.Image, 'remove_snap')
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@mock.patch.object(MockRBD.Image, 'unprotect_snap')
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def test_delete_image_w_snap_with_error(self, unprotect, remove_snap,
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remove):
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def _fake_unprotect_snap(*args, **kwargs):
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self.called_commands_actual.append('unprotect_snap')
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raise TestException()
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def _fake_remove_snap(*args, **kwargs):
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self.called_commands_actual.append('remove_snap')
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def _fake_remove(*args, **kwargs):
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self.called_commands_actual.append('remove')
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remove.side_effect = _fake_remove
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unprotect.side_effect = _fake_unprotect_snap
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remove_snap.side_effect = _fake_remove_snap
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self.assertRaises(TestException, self.store._delete_image,
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'fake_pool', self.location.image,
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snapshot_name='snap')
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self.called_commands_expected = ['unprotect_snap']
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def test_delete_image_w_snap_exc_image_busy(self):
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def _fake_unprotect_snap(*args, **kwargs):
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self.called_commands_actual.append('unprotect_snap')
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raise MockRBD.ImageBusy()
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with mock.patch.object(MockRBD.Image, 'unprotect_snap') as mocked:
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mocked.side_effect = _fake_unprotect_snap
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self.assertRaises(exceptions.InUseByStore,
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self.store._delete_image,
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'fake_pool', self.location.image,
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snapshot_name='snap')
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self.called_commands_expected = ['unprotect_snap']
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def test_delete_image_w_snap_exc_image_has_snap(self):
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def _fake_remove(*args, **kwargs):
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self.called_commands_actual.append('remove')
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raise MockRBD.ImageHasSnapshots()
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with mock.patch.object(MockRBD.RBD, 'remove') as remove:
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remove.side_effect = _fake_remove
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self.assertRaises(exceptions.HasSnapshot, self.store._delete_image,
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'fake_pool', self.location.image)
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self.called_commands_expected = ['remove']
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def test_get_partial_image(self):
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loc = g_location.Location('test_rbd_store', rbd_store.StoreLocation,
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self.conf, store_specs=self.store_specs)
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self.assertRaises(exceptions.StoreRandomGetNotSupported,
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self.store.get, loc, chunk_size=1)
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@mock.patch.object(MockRados.Rados, 'connect')
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def test_rados_connect_timeout(self, mock_rados_connect):
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socket_timeout = 1
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self.config(rados_connect_timeout=socket_timeout)
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self.store.configure()
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with self.store.get_connection('conffile', 'rados_id'):
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mock_rados_connect.assert_called_with(timeout=socket_timeout)
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@mock.patch.object(MockRados.Rados, 'connect', side_effect=MockRados.Error)
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def test_rados_connect_error(self, _):
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rbd_store.rados.Error = MockRados.Error
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def test():
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with self.store.get_connection('conffile', 'rados_id'):
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pass
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self.assertRaises(exceptions.BackendException, test)
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def test_create_image_conf_features(self):
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# Tests that we use non-0 features from ceph.conf and cast to int.
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fsid = 'fake'
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features = '3'
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conf_get_mock = mock.Mock(return_value=features)
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conn = mock.Mock(conf_get=conf_get_mock)
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ioctxt = mock.sentinel.ioctxt
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name = '1'
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size = 1024
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order = 3
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with mock.patch.object(rbd_store.rbd.RBD, 'create') as create_mock:
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location = self.store._create_image(
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fsid, conn, ioctxt, name, size, order)
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self.assertEqual(fsid, location.specs['fsid'])
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self.assertEqual(rbd_store.DEFAULT_POOL, location.specs['pool'])
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self.assertEqual(name, location.specs['image'])
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self.assertEqual(rbd_store.DEFAULT_SNAPNAME,
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location.specs['snapshot'])
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create_mock.assert_called_once_with(ioctxt, name, size, order,
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old_format=False, features=3)
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def tearDown(self):
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self.assertEqual(self.called_commands_expected,
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self.called_commands_actual)
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super(TestStore, self).tearDown()
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