mistral/mistral/tests/unit/engine/test_action_caching.py

114 lines
3.4 KiB
Python

# Copyright 2017 - Nokia Networks.
#
# 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
import cachetools
from oslo_config import cfg
from mistral.db.v2 import api as db_api
from mistral.engine import actions
from mistral.services import actions as action_service
from mistral.services import workflows as wf_service
from mistral.tests.unit.engine import base
# Use the set_default method to set value otherwise in certain test cases
# the change in value is not permanent.
cfg.CONF.set_default('auth_enable', False, group='pecan')
class LookupUtilsTest(base.EngineTestCase):
def test_action_definition_cache_ttl(self):
action = """---
version: '2.0'
action1:
base: std.echo output='Hi'
output:
result: $
"""
wf_text = """---
version: '2.0'
wf:
tasks:
task1:
action: action1
on-success: join_task
task2:
action: action1
on-success: join_task
join_task:
join: all
on-success: task4
task4:
action: action1
pause-before: true
"""
wf_service.create_workflows(wf_text)
# Create an action.
db_actions = action_service.create_actions(action)
self.assertEqual(1, len(db_actions))
self._assert_single_item(db_actions, name='action1')
# Explicitly mark the action to be deleted after the test execution.
self.addCleanup(db_api.delete_action_definitions, name='action1')
# Reinitialise the cache with reduced action_definition_cache_time
# to make the test faster.
new_cache = cachetools.TTLCache(
maxsize=1000,
ttl=5 # 5 seconds
)
cache_patch = mock.patch.object(
actions, '_ACTION_DEF_CACHE', new_cache)
cache_patch.start()
self.addCleanup(cache_patch.stop)
# Start workflow.
wf_ex = self.engine.start_workflow('wf')
self.await_workflow_paused(wf_ex.id)
# Check that 'action1' 'echo' and 'noop' are cached.
self.assertEqual(3, len(actions._ACTION_DEF_CACHE))
self.assertIn('action1', actions._ACTION_DEF_CACHE)
self.assertIn('std.noop', actions._ACTION_DEF_CACHE)
self.assertIn('std.echo', actions._ACTION_DEF_CACHE)
# Wait some time until cache expires
self._await(
lambda: len(actions._ACTION_DEF_CACHE) == 0,
fail_message="No triggers were found"
)
self.assertEqual(0, len(actions._ACTION_DEF_CACHE))
self.engine.resume_workflow(wf_ex.id)
self.await_workflow_success(wf_ex.id)
# Check all actions are cached again.
self.assertEqual(2, len(actions._ACTION_DEF_CACHE))
self.assertIn('action1', actions._ACTION_DEF_CACHE)
self.assertIn('std.echo', actions._ACTION_DEF_CACHE)