mirror of
https://github.com/pretix/pretix.git
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91 lines
3.6 KiB
Python
91 lines
3.6 KiB
Python
#
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# This file is part of pretix (Community Edition).
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#
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# Copyright (C) 2014-2020 Raphael Michel and contributors
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# Copyright (C) 2020-today pretix GmbH and contributors
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#
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# This program is free software: you can redistribute it and/or modify it under the terms of the GNU Affero General
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# Public License as published by the Free Software Foundation in version 3 of the License.
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#
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# ADDITIONAL TERMS APPLY: Pursuant to Section 7 of the GNU Affero General Public License, additional terms are
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# applicable granting you additional permissions and placing additional restrictions on your usage of this software.
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# Please refer to the pretix LICENSE file to obtain the full terms applicable to this work. If you did not receive
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# this file, see <https://pretix.eu/about/en/license>.
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#
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# This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied
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# warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Affero General Public License for more
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# details.
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#
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# You should have received a copy of the GNU Affero General Public License along with this program. If not, see
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# <https://www.gnu.org/licenses/>.
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#
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import logging
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import multiprocessing
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import os
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from celery import Celery, signals
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from django.dispatch import receiver
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os.environ.setdefault("DJANGO_SETTINGS_MODULE", "pretix.settings")
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logger = logging.getLogger(__name__)
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from django.conf import settings
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app = Celery('pretix')
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app.config_from_object('django.conf:settings', namespace='CELERY')
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app.autodiscover_tasks(lambda: settings.INSTALLED_APPS)
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@receiver(signals.before_task_publish)
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def on_before_task_publish(sender, body, exchange, routing_key, headers, properties, declare, retry_policy, **kwargs):
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from pretix.helpers.logs import local
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trace = getattr(local, 'trace', [])
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request_id = getattr(local, 'request_id', None)
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if request_id:
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trace.append(request_id)
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headers["X-Pretix-Trace"] = " ".join(trace)
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@receiver(signals.task_received)
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def on_task_received(sender, request, **kwargs):
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trace = request._request_dict.get("X-Pretix-Trace")
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if trace:
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logger.info(f"Task {request.id} has trace {trace}")
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@receiver(signals.after_setup_task_logger)
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def on_after_setup_task_logger(sender, logger, loglevel, logfile, format, colorize, **kwargs):
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# This hack seems to be required to get celery to log internal events from eg billiard/pool.py such as
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# "worker killed because it used too much memory"
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# You can test that it is working by starting a celery worker with a low value like
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# --max-memory-per-child 300000
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# and then trigger a task. Result should look like this:
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# [2026-09-23 10:42:26,234: WARNING/ForkPoolWorker-16]: [???:???] child process exiting after exceeding memory limit (394540KiB / 300000KiB)
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# The ???:??? are likely because by copying the handlers, we are also copying the format, but I was unable to find
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# a better compatible way.
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multi_logger = multiprocessing.get_logger()
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multi_logger.setLevel(logging.WARNING)
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multi_logger.handlers = logger.handlers
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@receiver(signals.task_prerun)
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def on_task_prerun(sender, task_id, task, **kwargs):
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from pretix.helpers.logs import local
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local.request_id = task_id
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if task.request.headers and "X-Pretix-Trace" in task.request.headers:
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local.trace = task.request.headers["X-Pretix-Trace"].split(" ")
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else:
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local.trace = []
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local.trace.append(task_id)
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@receiver(signals.task_postrun)
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def on_task_postrun(sender, task_id, task, **kwargs):
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from pretix.helpers.logs import local
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local.request_id = None
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local.trace = []
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