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 get_client(hub=None, **kwargs):
"""Get or create HTTP client bound to the current event loop."""
hub = hub or get_event_loop()
try:
return hub._current_http_client
except AttributeError:
client = hub._current_http_client = Client(hub, **kwargs)
return client
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 get_client(hub=None, **kwargs):
"""Get or create HTTP client bound to the current event loop."""
hub = hub or get_event_loop()
try:
return hub._current_http_client
except AttributeError:
client = hub._current_http_client = Client(hub, **kwargs)
return client
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 test_with_file_descriptor_safety(self):
# Given: a test celery worker instance
worker = self.create_worker(
autoscale=[10, 5],
use_eventloop=True,
timer_cls='celery.utils.timer2.Timer',
threads=False,
)
# Given: This test requires a QoS defined on the worker consumer
worker.consumer.qos = qos = QoS(lambda prefetch_count: prefetch_count,
2)
qos.update()
# Given: We have started the worker pool
worker.pool.start()
# Given: Utilize kombu to get the global hub state
hub = get_event_loop()
# Given: Initial call the Async Pool to register events works fine
worker.pool.register_with_event_loop(hub)
# Given: Mock the Hub to return errors for add and remove
def throw_file_not_found_error(*args, **kwargs):
raise OSError()
hub.add = throw_file_not_found_error
hub.add_reader = throw_file_not_found_error
hub.remove = throw_file_not_found_error
# When: Calling again to register with event loop ...
worker.pool.register_with_event_loop(hub)
worker.pool._pool.register_with_event_loop(hub)
# Then: test did not raise OSError
# Note: worker.pool is prefork.TaskPool whereas
# worker.pool._pool is the asynpool.AsynPool class.
# When: Calling the tic method on_poll_start
worker.pool._pool.on_poll_start()
# Then: test did not raise OSError
# Given: a mock object that fakes whats required to do whats next
proc = Mock(_sentinel_poll=42)
# When: Calling again to register with event loop ...
worker.pool._pool._track_child_process(proc, hub)
# Then: test did not raise OSError
# Given:
worker.pool._pool._flush_outqueue = throw_file_not_found_error
# Finally: Clean up so the threads before/after fixture passes
worker.terminate()
worker.pool.terminate()
def __init__(self, *args, **kwargs):
if boto3 is None:
raise ImportError('boto3 is not installed')
super(Channel, self).__init__(*args, **kwargs)
# SQS blows up if you try to create a new queue when one already
# exists but with a different visibility_timeout. This prepopulates
# the queue_cache to protect us from recreating
# queues that are known to already exist.
self._update_queue_cache(self.queue_name_prefix)
self.hub = kwargs.get('hub') or get_event_loop()
def __init__(self, *args, **kwargs):
if boto3 is None:
raise ImportError('boto3 is not installed')
super().__init__(*args, **kwargs)
# SQS blows up if you try to create a new queue when one already
# exists but with a different visibility_timeout. This prepopulates
# the queue_cache to protect us from recreating
# queues that are known to already exist.
self._update_queue_cache(self.queue_name_prefix)
self.hub = kwargs.get('hub') or get_event_loop()
def test_with_autoscaler_file_descriptor_safety(self):
# Given: a test celery worker instance with auto scaling
worker = self.create_worker(
autoscale=[10, 5],
use_eventloop=True,
timer_cls='celery.utils.timer2.Timer',
threads=False,
)
# Given: This test requires a QoS defined on the worker consumer
worker.consumer.qos = qos = QoS(lambda prefetch_count: prefetch_count,
2)
qos.update()
# Given: We have started the worker pool
worker.pool.start()
# Then: the worker pool is the same as the autoscaler pool
auto_scaler = worker.autoscaler
assert worker.pool == auto_scaler.pool
# Given: Utilize kombu to get the global hub state
hub = get_event_loop()
# Given: Initial call the Async Pool to register events works fine
worker.pool.register_with_event_loop(hub)
# Create some mock queue message and read from them
_keep = [Mock(name=f'req{i}') for i in range(20)]
[state.task_reserved(m) for m in _keep]
auto_scaler.body()
# Simulate a file descriptor from the list is closed by the OS
# auto_scaler.force_scale_down(5)
# This actually works -- it releases the semaphore properly
# Same with calling .terminate() on the process directly
for fd, proc in worker.pool._pool._fileno_to_outq.items():
# however opening this fd as a file and closing it will do it
queue_worker_socket = open(str(fd), "w")
queue_worker_socket.close()
break # Only need to do this once
# When: Calling again to register with event loop ...
worker.pool.register_with_event_loop(hub)
# Then: test did not raise "OSError: [Errno 9] Bad file descriptor!"
# Finally: Clean up so the threads before/after fixture passes
worker.terminate()
worker.pool.terminate()
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
