Files
bugsink/snappea/decorators.py
2025-04-17 10:16:43 +02:00

43 lines
1.9 KiB
Python

import logging
import json
from performance.context_managers import time_to_logger
from . import registry
from .models import Task, wakeup_server
from .settings import get_settings
from .utils import add_task_kwargs
performance_logger = logging.getLogger("bugsink.performance.snappea")
def shared_task(function):
def delayed_function(*args, **kwargs):
if get_settings().TASK_ALWAYS_EAGER:
# To ensure that args and kwargs are json-serializable in automatic tests and when using the single-server
# setup we do these 2 .dumps calls here. The cost should be negligible in general (args/kwargs are small),
# so even when single-server is used as a "production" server this shouldn't be a problem.
json.dumps(args), json.dumps(kwargs)
function(*args, **kwargs)
# nothing is returned, because when calling x.delay(...) no result can be expected (it isn't available for
# the non-eager case either).
return
with time_to_logger(performance_logger, "Snappea Task.create()"):
# No need for a transaction: we just write something (not connected to any other object, and we will never
# touch it again). Counterpoint: if we'd have a transaction, we could distinguish between "wait for write
# lock" and "actually write".
# observed timings: ~2.8ms, see also: https://www.bugsink.com/blog/snappea-design/#throughput
kwargs.update(add_task_kwargs())
Task.objects.create(task_name=name, args=json.dumps(args), kwargs=json.dumps(kwargs))
# not necessary: `connections["snappea"].close()`; Django does this at the end of the request and the
# foreman's thread cleanup code does it for worker threads.
wakeup_server()
name = function.__module__ + "." + function.__name__
function.delay = delayed_function
registry[name] = function
return function