100 lines
2.6 KiB
Python
100 lines
2.6 KiB
Python
# Copyright 2015 - Mirantis, Inc.
|
|
# Copyright 2015 - StackStorm, Inc.
|
|
#
|
|
# 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 eventlet
|
|
from eventlet import semaphore
|
|
from oslo_config import cfg
|
|
import testtools
|
|
|
|
from mistral.db.v2.sqlalchemy import api as db_api
|
|
from mistral.tests import base as test_base
|
|
|
|
|
|
WF_EXEC = {
|
|
'name': '1',
|
|
'spec': {},
|
|
'start_params': {},
|
|
'state': 'RUNNING',
|
|
'state_info': "Running...",
|
|
'created_at': None,
|
|
'updated_at': None,
|
|
'context': None,
|
|
'task_id': None,
|
|
'trust_id': None
|
|
}
|
|
|
|
|
|
@testtools.skipIf(
|
|
'sqlite' not in cfg.CONF.database.connection,
|
|
'SQLite is not used for the database backend.')
|
|
class SQLiteTransactionsTest(test_base.DbTestCase):
|
|
"""The purpose of this test is to research transactions of SQLite."""
|
|
|
|
def setUp(self):
|
|
super(SQLiteTransactionsTest, self).setUp()
|
|
|
|
cfg.CONF.set_default('auth_enable', True, group='pecan')
|
|
|
|
self.addCleanup(
|
|
cfg.CONF.set_default,
|
|
'auth_enable',
|
|
False,
|
|
group='pecan'
|
|
)
|
|
|
|
def test_dirty_reads(self):
|
|
sem1 = semaphore.Semaphore(0)
|
|
sem2 = semaphore.Semaphore(0)
|
|
|
|
def _run_tx1():
|
|
with db_api.transaction():
|
|
wf_ex = db_api.create_workflow_execution(WF_EXEC)
|
|
|
|
# Release TX2 so it can read data.
|
|
sem2.release()
|
|
|
|
print("Created: %s" % wf_ex)
|
|
print("Holding TX1...")
|
|
|
|
sem1.acquire()
|
|
|
|
print("TX1 completed.")
|
|
|
|
def _run_tx2():
|
|
with db_api.transaction():
|
|
print("Holding TX2...")
|
|
|
|
sem2.acquire()
|
|
|
|
wf_execs = db_api.get_workflow_executions()
|
|
|
|
print("Read: %s" % wf_execs)
|
|
|
|
self.assertEqual(1, len(wf_execs))
|
|
|
|
# Release TX1 so it can complete.
|
|
sem1.release()
|
|
|
|
print("TX2 completed.")
|
|
|
|
t1 = eventlet.spawn(_run_tx1)
|
|
t2 = eventlet.spawn(_run_tx2)
|
|
|
|
t1.wait()
|
|
t2.wait()
|
|
t1.kill()
|
|
t2.kill()
|