61 lines
2.0 KiB
Python
61 lines
2.0 KiB
Python
#
|
|
# 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 cloudpulse.common import exception
|
|
from cloudpulse import objects
|
|
import contextlib
|
|
from oslo_log import log as logging
|
|
from oslo_utils import excutils
|
|
import time
|
|
|
|
LOG = logging.getLogger(__name__)
|
|
|
|
|
|
class CpulseLock(object):
|
|
|
|
def __init__(self, cpulse_test, conductor_id):
|
|
self.cpulse_test = cpulse_test
|
|
self.conductor_id = conductor_id
|
|
|
|
def acquire(self, retry=True, times=10):
|
|
for num in xrange(0, times):
|
|
lock_id = objects.CpulseLock.create(self.cpulse_test.name,
|
|
self.conductor_id)
|
|
if lock_id is None:
|
|
return
|
|
else:
|
|
time.sleep(3)
|
|
raise exception.TestLocked(uuid=self.cpulse_test.name)
|
|
|
|
def release(self, test_name):
|
|
result = objects.CpulseLock.release(test_name, self.conductor_id)
|
|
if result is True:
|
|
LOG.debug("Lock was already released on test %s!" % test_name)
|
|
else:
|
|
LOG.debug("Lock has been released")
|
|
|
|
|
|
@contextlib.contextmanager
|
|
def thread_lock(cpulse_test, conductor_id):
|
|
cpulselock = CpulseLock(cpulse_test, conductor_id)
|
|
try:
|
|
cpulselock.acquire()
|
|
yield
|
|
except exception.TestLocked:
|
|
raise
|
|
except: # noqa
|
|
with excutils.save_and_reraise_exception():
|
|
cpulselock.release(cpulse_test.name)
|
|
finally:
|
|
cpulselock.release(cpulse_test.name)
|