def _prepare_app(broker_url=None, execute=None):
broker_url = broker_url or conf.get('celery', 'BROKER_URL')
execute = execute or celery_executor.execute_command.__wrapped__
test_config = dict(celery_executor.celery_configuration)
test_config.update({'broker_url': broker_url})
test_app = Celery(broker_url, config_source=test_config)
test_execute = test_app.task(execute)
patch_app = mock.patch('airflow.executors.celery_executor.app', test_app)
patch_execute = mock.patch(
'airflow.executors.celery_executor.execute_command', test_execute)
backend = test_app.backend
if hasattr(backend, 'ResultSession'):
# Pre-create the database tables now, otherwise SQLA vis Celery has a
# race condition where it one of the subprocesses can die with "Table
# already exists" error, because SQLA checks for which tables exist,
# then issues a CREATE TABLE, rather than doing CREATE TABLE IF NOT
# EXISTS
session = backend.ResultSession()
session.close()
with patch_app, patch_execute:
try:
yield test_app
finally:
# Clear event loop to tear down each celery instance
set_event_loop(None)
def handle(self, queue, *args, **options):
fmt = '%(asctime)s %(name)-12s: %(levelname)-8s %(message)s'
log_level = 40 - (options['verbosity'] * 10)
logging.basicConfig(level=log_level, format=fmt)
# TODO: Ensure that failed processing does not requeue task into
# work queue
set_event_loop(Hub())
kwargs = {
'transport_options': conf.broker_transport_options,
}
with app.connection(**kwargs) as conn:
logger.info("Launching worker")
worker = Worker(conn, queues=[Queue(queue)])
worker.connect_max_retries = 1
while True:
try:
breakers.celery.call(worker.run)
except KeyboardInterrupt:
logger.info("KeyboardInterrupt, exiting. Bye!")
break
except breakers.celery.expected_errors:
rest_val = 5
logger.warning(
"Open circuit detected. "
"Sleeping for %s seconds and then will try again.",
rest_val)
time.sleep(rest_val)
def scoped_pyramid_app(celery_app, db_init_and_wipe):
from .testing import integration_test_settings
settings = integration_test_settings()
from pyramid import testing
config = testing.setUp(settings=settings)
# Register the routes for reverse generation of urls.
config.include('cnxpublishing.views')
# Tack the pyramid config on the celery app.
# See cnxpublishing.tasks.includeme
config.registry.celery_app = celery_app
config.registry.celery_app.conf['pyramid_config'] = config
config.scan('cnxpublishing.subscribers')
# Celery only creates the tables once per session. This gets celery to
# create the tables again (as a side effect of a new session manager) since
# we are starting with an empty database.
from celery.backends.database.session import SessionManager
celery_app.backend.ResultSession(SessionManager())
# Initialize the authentication policy.
from openstax_accounts.stub import main
main(config)
config.commit()
yield config
testing.tearDown()
# Force celery to create a new event loop.
# See https://github.com/celery/celery/issues/4088
from kombu.asynchronous import set_event_loop
set_event_loop(None)
def hub(request):
from kombu.asynchronous import Hub, get_event_loop, set_event_loop
_prev_hub = get_event_loop()
hub = Hub()
set_event_loop(hub)
yield hub
if _prev_hub is not None:
set_event_loop(_prev_hub)
def hub(request):
from kombu.asynchronous import Hub, get_event_loop, set_event_loop
_prev_hub = get_event_loop()
hub = Hub()
set_event_loop(hub)
yield hub
if _prev_hub is not None:
set_event_loop(_prev_hub)
def create(self, w):
w.hub = get_event_loop()
if w.hub is None:
required_hub = getattr(w._conninfo, 'requires_hub', None)
w.hub = set_event_loop(
(required_hub if required_hub else _Hub)(w.timer))
self._patch_thread_primitives(w)
return self
def create(self, w):
w.hub = get_event_loop()
if w.hub is None:
required_hub = getattr(w._conninfo, 'requires_hub', None)
w.hub = set_event_loop((
required_hub if required_hub else _Hub)(w.timer))
self._patch_thread_primitives(w)
return self
def _prepare_app(self, broker_url=None, execute=None):
broker_url = broker_url or conf.get('celery', 'BROKER_URL')
execute = execute or celery_executor.execute_command.__wrapped__
test_config = dict(celery_executor.celery_configuration)
test_config.update({'broker_url': broker_url})
test_app = Celery(broker_url, config_source=test_config)
test_execute = test_app.task(execute)
patch_app = mock.patch('airflow.executors.celery_executor.app', test_app)
patch_execute = mock.patch('airflow.executors.celery_executor.execute_command', test_execute)
with patch_app, patch_execute:
try:
yield test_app
finally:
# Clear event loop to tear down each celery instance
set_event_loop(None)
def _prepare_app(self, broker_url=None, execute=None):
broker_url = broker_url or configuration.conf.get('celery', 'BROKER_URL')
execute = execute or celery_executor.execute_command.__wrapped__
test_config = dict(celery_executor.celery_configuration)
test_config.update({'broker_url': broker_url})
test_app = Celery(broker_url, config_source=test_config)
test_execute = test_app.task(execute)
patch_app = mock.patch('airflow.executors.celery_executor.app', test_app)
patch_execute = mock.patch('airflow.executors.celery_executor.execute_command', test_execute)
with patch_app, patch_execute:
try:
yield test_app
finally:
# Clear event loop to tear down each celery instance
set_event_loop(None)
def create(self, w):
w.hub = get_event_loop()
if w.hub is None:
w.hub = set_event_loop(_Hub(w.timer))
self._patch_thread_primitives(w)
return self
