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# Copyright 2022 StackHPC
#
# 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 copy
from unittest import mock
from oslo_config import cfg
from oslo_limit import exception as limit_exceptions
from oslo_limit import fixture as limit_fixture
from oslo_utils.fixture import uuidsentinel as uuids
from nova import context
from nova import exception
from nova.limit import local as local_limit
from nova.limit import utils as limit_utils
from nova import objects
from nova import test
CONF = cfg.CONF
class TestLocalLimits(test.NoDBTestCase):
def setUp(self):
super(TestLocalLimits, self).setUp()
self.flags(driver=limit_utils.UNIFIED_LIMITS_DRIVER, group="quota")
self.context = context.RequestContext()
def test_enforce_api_limit_metadata(self):
# default max is 128
self.useFixture(limit_fixture.LimitFixture(
{local_limit.SERVER_METADATA_ITEMS: 128}, {}))
local_limit.enforce_api_limit(local_limit.SERVER_METADATA_ITEMS, 128)
e = self.assertRaises(exception.MetadataLimitExceeded,
local_limit.enforce_api_limit,
local_limit.SERVER_METADATA_ITEMS, 129)
msg = ("Resource %s is over limit" % local_limit.SERVER_METADATA_ITEMS)
self.assertIn(msg, str(e))
def test_enforce_api_limit_skip(self):
self.flags(driver="nova.quota.NoopQuotaDriver", group="quota")
local_limit.enforce_api_limit(local_limit.SERVER_METADATA_ITEMS, 200)
@mock.patch('oslo_limit.limit.Enforcer')
def test_enforce_api_limit_session_init_error(self, mock_util):
mock_util.side_effect = limit_exceptions.SessionInitError('error')
e = self.assertRaises(exception.KeystoneConnectionFailed,
local_limit.enforce_api_limit,
local_limit.SERVER_METADATA_ITEMS, 42)
expected = ('Failed to connect to keystone while enforcing '
'server_metadata_items quota limit.')
self.assertIn(expected, str(e))
def test_enforce_api_limit_raises_for_invalid_entity(self):
e = self.assertRaises(ValueError,
local_limit.enforce_api_limit,
local_limit.KEY_PAIRS, 42)
expected = '%s is not a valid API limit: %s' % (
local_limit.KEY_PAIRS, local_limit.API_LIMITS)
self.assertEqual(expected, str(e))
def test_enforce_api_limit_no_registered_limit_found(self):
self.useFixture(limit_fixture.LimitFixture({}, {}))
e = self.assertRaises(exception.MetadataLimitExceeded,
local_limit.enforce_api_limit,
local_limit.SERVER_METADATA_ITEMS, 42)
msg = ("Resource %s is over limit" % local_limit.SERVER_METADATA_ITEMS)
self.assertIn(msg, str(e))
def test_enforce_injected_files(self):
reglimits = {local_limit.INJECTED_FILES: 5,
local_limit.INJECTED_FILES_CONTENT: 10 * 1024,
local_limit.INJECTED_FILES_PATH: 255}
self.useFixture(limit_fixture.LimitFixture(reglimits, {}))
local_limit.enforce_api_limit(local_limit.INJECTED_FILES, 5)
local_limit.enforce_api_limit(local_limit.INJECTED_FILES_CONTENT,
10 * 1024)
local_limit.enforce_api_limit(local_limit.INJECTED_FILES_PATH, 255)
e = self.assertRaises(exception.OnsetFileLimitExceeded,
local_limit.enforce_api_limit,
local_limit.INJECTED_FILES, 6)
msg = ("Resource %s is over limit" % local_limit.INJECTED_FILES)
self.assertIn(msg, str(e))
e = self.assertRaises(exception.OnsetFileContentLimitExceeded,
local_limit.enforce_api_limit,
local_limit.INJECTED_FILES_CONTENT,
10 * 1024 + 1)
msg = (
"Resource %s is over limit" % local_limit.INJECTED_FILES_CONTENT)
self.assertIn(msg, str(e))
e = self.assertRaises(exception.OnsetFilePathLimitExceeded,
local_limit.enforce_api_limit,
local_limit.INJECTED_FILES_PATH, 256)
msg = ("Resource %s is over limit" % local_limit.INJECTED_FILES_PATH)
self.assertIn(msg, str(e))
@mock.patch.object(objects.KeyPairList, "get_count_by_user")
def test_enforce_db_limit_keypairs(self, mock_count):
self.useFixture(limit_fixture.LimitFixture(
{local_limit.KEY_PAIRS: 100}, {}))
mock_count.return_value = 99
local_limit.enforce_db_limit(self.context, local_limit.KEY_PAIRS,
uuids.user_id, 1)
mock_count.assert_called_once_with(self.context, uuids.user_id)
self.assertRaises(exception.KeypairLimitExceeded,
local_limit.enforce_db_limit,
self.context, local_limit.KEY_PAIRS,
uuids.user_id, 2)
mock_count.return_value = 100
local_limit.enforce_db_limit(self.context, local_limit.KEY_PAIRS,
uuids.user_id, 0)
mock_count.return_value = 101
self.assertRaises(exception.KeypairLimitExceeded,
local_limit.enforce_db_limit,
self.context, local_limit.KEY_PAIRS,
uuids.user_id, 0)
def test_enforce_db_limit_skip(self):
self.flags(driver="nova.quota.NoopQuotaDriver", group="quota")
local_limit.enforce_db_limit(self.context, local_limit.KEY_PAIRS,
uuids.user_id, 1)
@mock.patch('oslo_limit.limit.Enforcer')
def test_enforce_db_limit_session_init_error(self, mock_util):
mock_util.side_effect = limit_exceptions.SessionInitError(
test.TestingException())
e = self.assertRaises(exception.KeystoneConnectionFailed,
local_limit.enforce_db_limit, self.context,
local_limit.KEY_PAIRS, uuids.user_id, 42)
expected = ('Failed to connect to keystone while enforcing '
'server_key_pairs quota limit.')
self.assertEqual(expected, str(e))
def test_enforce_db_limit_raise_on_invalid(self):
e = self.assertRaises(ValueError, local_limit.enforce_db_limit,
self.context, local_limit.INJECTED_FILES,
uuids.user_id, 1)
fmt = '%s does not have a DB count function defined: %s'
expected = fmt % (
local_limit.INJECTED_FILES, local_limit.DB_COUNT_FUNCTION.keys())
self.assertEqual(expected, str(e))
@mock.patch.object(objects.KeyPairList, "get_count_by_user")
def test_enforce_db_limit_no_registered_limit_found(self, mock_count):
self.useFixture(limit_fixture.LimitFixture({}, {}))
mock_count.return_value = 5
e = self.assertRaises(exception.KeypairLimitExceeded,
local_limit.enforce_db_limit, self.context,
local_limit.KEY_PAIRS, uuids.user_id, 42)
msg = ("Resource %s is over limit" % local_limit.KEY_PAIRS)
self.assertIn(msg, str(e))
def test_enforce_db_limit_raise_bad_delta(self):
e = self.assertRaises(ValueError, local_limit.enforce_db_limit,
self.context, local_limit.KEY_PAIRS,
uuids.user_id, -1)
self.assertEqual("delta must be a positive integer", str(e))
@mock.patch.object(objects.InstanceGroupList, "get_counts")
def test_enforce_db_limit_server_groups(self, mock_count):
self.useFixture(limit_fixture.LimitFixture(
{local_limit.SERVER_GROUPS: 10}, {}))
mock_count.return_value = {'project': {'server_groups': 9}}
local_limit.enforce_db_limit(self.context, local_limit.SERVER_GROUPS,
uuids.project_id, 1)
mock_count.assert_called_once_with(self.context, uuids.project_id)
self.assertRaises(exception.ServerGroupLimitExceeded,
local_limit.enforce_db_limit,
self.context, local_limit.SERVER_GROUPS,
uuids.project_id, 2)
@mock.patch.object(objects.InstanceGroup, "get_by_uuid")
def test_enforce_db_limit_server_group_members(self, mock_get):
self.useFixture(limit_fixture.LimitFixture(
{local_limit.SERVER_GROUP_MEMBERS: 10}, {}))
mock_get.return_value = objects.InstanceGroup(members=[])
local_limit.enforce_db_limit(self.context,
local_limit.SERVER_GROUP_MEMBERS,
uuids.server_group, 10)
mock_get.assert_called_once_with(self.context, uuids.server_group)
self.assertRaises(exception.GroupMemberLimitExceeded,
local_limit.enforce_db_limit,
self.context, local_limit.SERVER_GROUP_MEMBERS,
uuids.server_group, 11)
@mock.patch.object(objects.InstanceGroupList, "get_counts")
def test_get_in_use(self, mock_count):
mock_count.return_value = {'project': {'server_groups': 9}}
usages = local_limit.get_in_use(self.context, uuids.project_id)
expected_usages = {
'injected_file_content_bytes': 0,
'injected_file_path_bytes': 0,
'injected_files': 0,
'key_pairs': 0,
'metadata_items': 0,
'server_group_members': 0,
'server_groups': 9
}
self.assertEqual(expected_usages, usages)
class GetLegacyLimitsTest(test.NoDBTestCase):
def setUp(self):
super(GetLegacyLimitsTest, self).setUp()
self.new = {"server_metadata_items": 1,
"server_injected_files": 2,
"server_injected_file_content_bytes": 3,
"server_injected_file_path_bytes": 4,
"server_key_pairs": 5,
"server_groups": 6,
"server_group_members": 7}
self.legacy = {"metadata_items": 1,
"injected_files": 2,
"injected_file_content_bytes": 3,
"injected_file_path_bytes": 4,
"key_pairs": 5,
"server_groups": 6,
"server_group_members": 7}
self.resources = list(local_limit.API_LIMITS | local_limit.DB_LIMITS)
self.resources.sort()
self.flags(driver=limit_utils.UNIFIED_LIMITS_DRIVER, group="quota")
def test_convert_keys_to_legacy_name(self):
limits = local_limit._convert_keys_to_legacy_name(self.new)
self.assertEqual(self.legacy, limits)
def test_get_legacy_default_limits(self):
reglimits = copy.deepcopy(self.new)
reglimits.pop('server_key_pairs')
self.useFixture(limit_fixture.LimitFixture(reglimits, {}))
limits = local_limit.get_legacy_default_limits()
expected = copy.deepcopy(self.legacy)
expected['key_pairs'] = 0
self.assertEqual(expected, limits)
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