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# Copyright 2018 RedHat Inc.
# 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 mock
from oslo_concurrency import processutils
from oslo_config import cfg
from oslo_utils import units
import six
import glance_store as store
from glance_store._drivers import sheepdog
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 as test_cap
class TestSheepdogMultiStore(base.MultiStoreBaseTest,
test_cap.TestStoreCapabilitiesChecking):
# NOTE(flaper87): temporary until we
# can move to a fully-local lib.
# (Swift store's fault)
_CONF = cfg.ConfigOpts()
def setUp(self):
"""Establish a clean test environment."""
super(TestSheepdogMultiStore, self).setUp()
enabled_backends = {
"sheepdog1": "sheepdog",
"sheepdog2": "sheepdog",
}
self.conf = self._CONF
self.conf(args=[])
self.conf.register_opt(cfg.DictOpt('enabled_backends'))
self.config(enabled_backends=enabled_backends)
store.register_store_opts(self.conf)
self.config(default_backend='sheepdog1', group='glance_store')
# mock sheepdog commands
def _fake_execute(*cmd, **kwargs):
pass
execute = mock.patch.object(processutils, 'execute').start()
execute.side_effect = _fake_execute
self.addCleanup(execute.stop)
# Ensure stores + locations cleared
location.SCHEME_TO_CLS_BACKEND_MAP = {}
store.create_multi_stores(self.conf)
self.addCleanup(setattr, location, 'SCHEME_TO_CLS_BACKEND_MAP',
dict())
self.addCleanup(self.conf.reset)
self.store = sheepdog.Store(self.conf, backend='sheepdog1')
self.store.configure()
self.store_specs = {'image': '6bd59e6e-c410-11e5-ab67-0a73f1fda51b',
'addr': '127.0.0.1',
'port': 7000}
@mock.patch.object(sheepdog.SheepdogImage, 'write')
@mock.patch.object(sheepdog.SheepdogImage, 'create')
@mock.patch.object(sheepdog.SheepdogImage, 'exist')
def test_add_image(self, mock_exist, mock_create, mock_write):
data = six.BytesIO(b'xx')
mock_exist.return_value = False
(uri, size, checksum, loc) = self.store.add('fake_image_id', data, 2)
self.assertEqual("sheepdog1", loc["backend"])
mock_exist.assert_called_once_with()
mock_create.assert_called_once_with(2)
mock_write.assert_called_once_with(b'xx', 0, 2)
@mock.patch.object(sheepdog.SheepdogImage, 'write')
@mock.patch.object(sheepdog.SheepdogImage, 'create')
@mock.patch.object(sheepdog.SheepdogImage, 'exist')
def test_add_image_to_different_backend(self, mock_exist,
mock_create, mock_write):
self.store = sheepdog.Store(self.conf, backend='sheepdog2')
self.store.configure()
data = six.BytesIO(b'xx')
mock_exist.return_value = False
(uri, size, checksum, loc) = self.store.add('fake_image_id', data, 2)
self.assertEqual("sheepdog2", loc["backend"])
mock_exist.assert_called_once_with()
mock_create.assert_called_once_with(2)
mock_write.assert_called_once_with(b'xx', 0, 2)
@mock.patch.object(sheepdog.SheepdogImage, 'write')
@mock.patch.object(sheepdog.SheepdogImage, 'exist')
def test_add_bad_size_with_image(self, mock_exist, mock_write):
data = six.BytesIO(b'xx')
mock_exist.return_value = False
self.assertRaises(exceptions.Forbidden, self.store.add,
'fake_image_id', data, 'test')
mock_exist.assert_called_once_with()
self.assertEqual(mock_write.call_count, 0)
@mock.patch.object(sheepdog.SheepdogImage, 'delete')
@mock.patch.object(sheepdog.SheepdogImage, 'write')
@mock.patch.object(sheepdog.SheepdogImage, 'create')
@mock.patch.object(sheepdog.SheepdogImage, 'exist')
def test_cleanup_when_add_image_exception(self, mock_exist, mock_create,
mock_write, mock_delete):
data = six.BytesIO(b'xx')
mock_exist.return_value = False
mock_write.side_effect = exceptions.BackendException
self.assertRaises(exceptions.BackendException, self.store.add,
'fake_image_id', data, 2)
mock_exist.assert_called_once_with()
mock_create.assert_called_once_with(2)
mock_write.assert_called_once_with(b'xx', 0, 2)
mock_delete.assert_called_once_with()
def test_add_duplicate_image(self):
def _fake_run_command(command, data, *params):
if command == "list -r":
return "= fake_volume 0 1000"
with mock.patch.object(sheepdog.SheepdogImage, '_run_command') as cmd:
cmd.side_effect = _fake_run_command
data = six.BytesIO(b'xx')
self.assertRaises(exceptions.Duplicate, self.store.add,
'fake_image_id', data, 2)
def test_get(self):
def _fake_run_command(command, data, *params):
if command == "list -r":
return "= fake_volume 0 1000"
with mock.patch.object(sheepdog.SheepdogImage, '_run_command') as cmd:
cmd.side_effect = _fake_run_command
loc = location.Location('test_sheepdog_store',
sheepdog.StoreLocation,
self.conf, store_specs=self.store_specs,
backend='sheepdog1')
ret = self.store.get(loc)
self.assertEqual(1000, ret[1])
def test_partial_get(self):
loc = location.Location('test_sheepdog_store', sheepdog.StoreLocation,
self.conf, store_specs=self.store_specs,
backend='sheepdog1')
self.assertRaises(exceptions.StoreRandomGetNotSupported,
self.store.get, loc, chunk_size=1)
def test_get_size(self):
def _fake_run_command(command, data, *params):
if command == "list -r":
return "= fake_volume 0 1000"
with mock.patch.object(sheepdog.SheepdogImage, '_run_command') as cmd:
cmd.side_effect = _fake_run_command
loc = location.Location('test_sheepdog_store',
sheepdog.StoreLocation,
self.conf, store_specs=self.store_specs,
backend='sheepdog1')
ret = self.store.get_size(loc)
self.assertEqual(1000, ret)
def test_delete(self):
called_commands = []
def _fake_run_command(command, data, *params):
called_commands.append(command)
if command == "list -r":
return "= fake_volume 0 1000"
with mock.patch.object(sheepdog.SheepdogImage, '_run_command') as cmd:
cmd.side_effect = _fake_run_command
loc = location.Location('test_sheepdog_store',
sheepdog.StoreLocation,
self.conf, store_specs=self.store_specs,
backend='sheepdog1')
self.store.delete(loc)
self.assertEqual(['list -r', 'delete'], called_commands)
def test_add_with_verifier(self):
"""Test that 'verifier.update' is called when verifier is provided."""
verifier = mock.MagicMock(name='mock_verifier')
self.store.chunk_size = units.Ki
image_id = 'fake_image_id'
file_size = units.Ki # 1K
file_contents = b"*" * file_size
image_file = six.BytesIO(file_contents)
def _fake_run_command(command, data, *params):
pass
with mock.patch.object(sheepdog.SheepdogImage, '_run_command') as cmd:
cmd.side_effect = _fake_run_command
(uri, size, checksum, loc) = self.store.add(
image_id, image_file, file_size, verifier=verifier)
self.assertEqual("sheepdog1", loc["backend"])
verifier.update.assert_called_with(file_contents)
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