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__init__.py
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r1 # -*- coding: utf-8 -*-
# Copyright (C) 2010-2016 RhodeCode GmbH
#
# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU Affero General Public License, version 3
# (only), as published by the Free Software Foundation.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU Affero General Public License
# along with this program. If not, see <http://www.gnu.org/licenses/>.
#
# This program is dual-licensed. If you wish to learn more about the
# RhodeCode Enterprise Edition, including its added features, Support services,
# and proprietary license terms, please see https://rhodecode.com/licenses/
"""
celery libs for RhodeCode
"""
import socket
import logging
import rhodecode
from os.path import join as jn
from pylons import config
from decorator import decorator
from zope.cachedescriptors.property import Lazy as LazyProperty
from rhodecode import CELERY_ENABLED, CELERY_EAGER
from rhodecode.config import utils
from rhodecode.lib.utils2 import safe_str, md5_safe, aslist
from rhodecode.lib.pidlock import DaemonLock, LockHeld
from rhodecode.lib.vcs import connect_vcs
from rhodecode.model import meta
log = logging.getLogger(__name__)
class ResultWrapper(object):
def __init__(self, task):
self.task = task
@LazyProperty
def result(self):
return self.task
def run_task(task, *args, **kwargs):
global CELERY_ENABLED
if CELERY_ENABLED:
try:
t = task.apply_async(args=args, kwargs=kwargs)
log.info('running task %s:%s', t.task_id, task)
return t
except socket.error as e:
if isinstance(e, IOError) and e.errno == 111:
log.debug('Unable to connect to celeryd. Sync execution')
CELERY_ENABLED = False
else:
log.exception("Exception while connecting to celeryd.")
except KeyError as e:
log.debug('Unable to connect to celeryd. Sync execution')
except Exception as e:
log.exception(
"Exception while trying to run task asynchronous. "
"Fallback to sync execution.")
log.debug('executing task %s in sync mode', task)
return ResultWrapper(task(*args, **kwargs))
def __get_lockkey(func, *fargs, **fkwargs):
params = list(fargs)
params.extend(['%s-%s' % ar for ar in fkwargs.items()])
func_name = str(func.__name__) if hasattr(func, '__name__') else str(func)
_lock_key = func_name + '-' + '-'.join(map(safe_str, params))
return 'task_%s.lock' % (md5_safe(_lock_key),)
def locked_task(func):
def __wrapper(func, *fargs, **fkwargs):
lockkey = __get_lockkey(func, *fargs, **fkwargs)
lockkey_path = config['app_conf']['cache_dir']
log.info('running task with lockkey %s' % lockkey)
try:
l = DaemonLock(file_=jn(lockkey_path, lockkey))
ret = func(*fargs, **fkwargs)
l.release()
return ret
except LockHeld:
log.info('LockHeld')
return 'Task with key %s already running' % lockkey
return decorator(__wrapper, func)
def get_session():
if CELERY_ENABLED:
utils.initialize_database(config)
sa = meta.Session()
return sa
def dbsession(func):
def __wrapper(func, *fargs, **fkwargs):
try:
ret = func(*fargs, **fkwargs)
return ret
finally:
if CELERY_ENABLED and not CELERY_EAGER:
meta.Session.remove()
return decorator(__wrapper, func)
def vcsconnection(func):
def __wrapper(func, *fargs, **fkwargs):
if CELERY_ENABLED and not CELERY_EAGER:
backends = config['vcs.backends'] = aslist(
config.get('vcs.backends', 'hg,git'), sep=',')
for alias in rhodecode.BACKENDS.keys():
if alias not in backends:
del rhodecode.BACKENDS[alias]
utils.configure_pyro4(config)
utils.configure_vcs(config)
connect_vcs(
config['vcs.server'],
utils.get_vcs_server_protocol(config))
ret = func(*fargs, **fkwargs)
return ret
return decorator(__wrapper, func)