def bg_runner(proxy_task, task=None, *args, **kwargs):
"""
Executes the function attached to task. Used to enable threads.
If a Task instance is provided, args and kwargs are ignored and retrieved from the Task itself.
"""
try:
func = getattr(proxy_task, 'task_function', None)
if isinstance(task, Task):
args, kwargs = task.params()
else:
task_name = getattr(proxy_task, 'name', None)
task_qs = Task.objects.get_task(task_name=task_name, args=args, kwargs=kwargs)
if task_qs:
task = task_qs[0]
if func is None:
raise BackgroundTaskError("Function is None, can't execute!")
func(*args, **kwargs)
if task:
# task done, so can delete it
task.increment_attempts()
completed = task.create_completed_task()
task_successful.send(sender=task.__class__, task_id=task.id, completed_task=completed)
task.delete()
logging.info('Ran task and deleting %s', task)
except Exception as ex:
t, e, traceback = sys.exc_info()
if task:
logging.warn('Rescheduling %s', task, exc_info=(t, e, traceback))
task_error.send(sender=ex.__class__, task=task)
task.reschedule(t, e, traceback)
del traceback
def bg_runner(proxy_task, task=None, *args, **kwargs):
"""
Executes the function attached to task. Used to enable threads.
If a Task instance is provided, args and kwargs are ignored and retrieved from the Task itself.
"""
signals.task_started.send(Task)
task_guid = None
try:
TaskCount.count += 1
func = getattr(proxy_task, 'task_function', None)
if isinstance(task, Task):
args, kwargs = task.params()
else:
task_name = getattr(proxy_task, 'name', None)
task_queue = getattr(proxy_task, 'queue', None)
task_qs = Task.objects.get_task(task_name=task_name, args=args, kwargs=kwargs)
if task_queue:
task_qs = task_qs.filter(queue=task_queue)
if task_qs:
task = task_qs[0]
if task and isinstance(task, Task):
task_guid = '%s-%s' % (task.id, task.task_hash)
TaskCount.task_guids.append(task_guid)
if func is None:
raise BackgroundTaskError("Function is None, can't execute!")
func(*args, **kwargs)
if task:
# task done, so can delete it
task.increment_attempts()
completed = task.create_completed_task()
signals.task_successful.send(sender=task.__class__, task_id=task.id, completed_task=completed)
task.create_repetition()
task.delete()
logger.info('Ran task and deleting %s', task)
except Exception as ex:
t, e, traceback = sys.exc_info()
if task:
logger.warn('Rescheduling %s', task, exc_info=(t, e, traceback))
signals.task_error.send(sender=ex.__class__, task=task)
task.reschedule(t, e, traceback)
del traceback
finally:
TaskCount.count -= 1
if task_guid and task_guid in TaskCount.task_guids:
TaskCount.task_guids.remove(task_guid)
signals.task_finished.send(Task)
def bg_runner(proxy_task, *args, **kwargs):
""" Executes the function attached to task. Used to enable threads. """
task = None
try:
func = getattr(proxy_task, 'task_function', None)
task_name = getattr(proxy_task, 'name', None)
task_qs = Task.objects.get_task(task_name=task_name,
args=args,
kwargs=kwargs)
if len(task_qs) == 0:
raise BackgroundTaskError("No matching task found!")
task = task_qs[0]
if func is None:
raise BackgroundTaskError("Function is None, can't execute!")
func(*args, **kwargs)
# task done, so can delete it
completed = CompletedTask(task_name=task.task_name,
task_params=task.task_params,
task_hash=task.task_hash,
priority=task.priority,
run_at=timezone.now(),
attempts=task.attempts,
failed_at=task.failed_at,
last_error=task.last_error,
locked_by=task.locked_by,
locked_at=task.locked_at)
completed.save()
task.delete()
logging.info('Ran task and deleting %s', task)
except Exception as ex:
t, e, traceback = sys.exc_info()
if task:
logging.warn('Rescheduling %s', task, exc_info=(t, e, traceback))
task.reschedule(t, e, traceback)
del traceback
