OpenStack Block Storage (Cinder)
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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.
from unittest import mock
import uuid
from cinder import quota
from cinder.tests.functional.api import client
from cinder.tests.functional import functional_helpers
from cinder.volume import configuration
class NestedQuotasTest(functional_helpers._FunctionalTestBase):
_vol_type_name = 'functional_test_type'
def setUp(self):
super(NestedQuotasTest, self).setUp()
self.api.create_type(self._vol_type_name)
self._create_project_hierarchy()
# Need to mock out Keystone so the functional tests don't require other
# services
_keystone_client = mock.MagicMock()
_keystone_client.version = 'v3'
_keystone_client.projects.get.side_effect = self._get_project
_keystone_client_get = mock.patch(
'cinder.quota_utils._keystone_client',
lambda *args, **kwargs: _keystone_client)
_keystone_client_get.start()
self.addCleanup(_keystone_client_get.stop)
# The QUOTA engine in Cinder is a global variable that lazy loads the
# quota driver, so even if we change the config for the quota driver,
# we won't reliably change the driver being used (or change it back)
# unless the global variables get cleaned up, so using mock instead to
# simulate this change
nested_driver = quota.NestedDbQuotaDriver()
_driver_patcher = mock.patch(
'cinder.quota.QuotaEngine._driver', new=nested_driver)
_driver_patcher.start()
self.addCleanup(_driver_patcher.stop)
# Default to using the top parent in the hierarchy
self._update_project(self.A.id)
def _get_flags(self):
f = super(NestedQuotasTest, self)._get_flags()
f['volume_driver'] = (
{'v': 'cinder.tests.fake_driver.FakeLoggingVolumeDriver',
'g': configuration.SHARED_CONF_GROUP})
f['default_volume_type'] = {'v': self._vol_type_name}
return f
# Currently we use 413 error for over quota
over_quota_exception = client.OpenStackApiException413
def _create_project_hierarchy(self):
r"""Sets up the nested hierarchy show below.
+-----------+
| A |
| / \ |
| B C |
| / |
| D |
+-----------+
"""
self.A = self.FakeProject()
self.B = self.FakeProject(parent_id=self.A.id)
self.C = self.FakeProject(parent_id=self.A.id)
self.D = self.FakeProject(parent_id=self.B.id)
self.B.subtree = {self.D.id: self.D.subtree}
self.A.subtree = {self.B.id: self.B.subtree, self.C.id: self.C.subtree}
self.A.parents = None
self.B.parents = {self.A.id: None}
self.C.parents = {self.A.id: None}
self.D.parents = {self.B.id: self.B.parents}
# project_by_id attribute is used to recover a project based on its id.
self.project_by_id = {self.A.id: self.A, self.B.id: self.B,
self.C.id: self.C, self.D.id: self.D}
class FakeProject(object):
_dom_id = uuid.uuid4().hex
def __init__(self, parent_id=None):
self.id = uuid.uuid4().hex
self.parent_id = parent_id
self.domain_id = self._dom_id
self.subtree = None
self.parents = None
def _get_project(self, project_id, *args, **kwargs):
return self.project_by_id[project_id]
def _create_volume(self):
return self.api.post_volume({'volume': {'size': 1}})
def test_default_quotas_enforced(self):
# Should be able to create volume on parent project by default
created_vol = self._create_volume()
self._poll_volume_while(created_vol['id'], ['creating'], 'available')
self._update_project(self.B.id)
# Shouldn't be able to create volume on child project by default
self.assertRaises(self.over_quota_exception, self._create_volume)
def test_update_child_with_parent_default_quota(self):
# Make sure we can update to a reasonable value
self.api.quota_set(self.B.id, {'volumes': 5})
# Ensure that the update took and we can create a volume
self._poll_volume_while(
self._create_volume()['id'], ['creating'], 'available')
def test_quota_update_child_greater_than_parent(self):
self.assertRaises(
client.OpenStackApiException400,
self.api.quota_set, self.B.id, {'volumes': 11})
def test_child_soft_limit_propagates_to_parent(self):
self.api.quota_set(self.B.id, {'volumes': 0})
self.api.quota_set(self.D.id, {'volumes': -1})
self._update_project(self.D.id)
self.assertRaises(self.over_quota_exception, self._create_volume)
def test_child_quota_hard_limits_affects_parents_allocated(self):
self.api.quota_set(self.B.id, {'volumes': 5})
self.api.quota_set(self.C.id, {'volumes': 3})
alloc = self.api.quota_get(self.A.id)['volumes']['allocated']
self.assertEqual(8, alloc)
self.assertRaises(client.OpenStackApiException400,
self.api.quota_set, self.C.id, {'volumes': 6})
def _update_quota_and_def_type(self, project_id, quota):
self.api.quota_set(project_id, quota)
type_updates = {'%s_%s' % (key, self._vol_type_name): val for key, val
in quota.items() if key != 'per_volume_gigabytes'}
return self.api.quota_set(project_id, type_updates)
def test_grandchild_soft_limit_propagates_up(self):
quota = {'volumes': -1, 'gigabytes': -1, 'per_volume_gigabytes': -1}
self._update_quota_and_def_type(self.B.id, quota)
self._update_quota_and_def_type(self.D.id, quota)
self._update_project(self.D.id)
# Create two volumes in the grandchild project and ensure grandparent's
# allocated is updated accordingly
vol = self._create_volume()
self._create_volume()
self._update_project(self.A.id)
alloc = self.api.quota_get(self.A.id)['volumes']['allocated']
self.assertEqual(2, alloc)
alloc = self.api.quota_get(self.B.id)['volumes']['allocated']
self.assertEqual(2, alloc)
# Ensure delete reduces the quota
self._update_project(self.D.id)
self.api.delete_volume(vol['id'])
self._poll_volume_while(vol['id'], ['deleting'])
self._update_project(self.A.id)
alloc = self.api.quota_get(self.A.id)['volumes']['allocated']
self.assertEqual(1, alloc)
alloc = self.api.quota_get(self.B.id)['volumes']['allocated']
self.assertEqual(1, alloc)