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توضیحات

A Django middleware that logs tracebacks of slow requests to Sentry.

ویژگی	مقدار
سیستم عامل	-
نام فایل	dogslow-sentry-2.0.0b1
نام	dogslow-sentry
نسخه کتابخانه	2.0.0b1
نگهدارنده	[]
ایمیل نگهدارنده	[]
نویسنده	Marti Raudsepp
ایمیل نویسنده	marti@juffo.org
آدرس صفحه اصلی	https://github.com/intgr/dogslow-sentry
آدرس اینترنتی	https://pypi.org/project/dogslow-sentry/
مجوز	GNU LGPL

============================================== Dogslow-Sentry -- Django Slow Request Watchdog ============================================== |PyPI version badge| |Tests status| .. |PyPI version badge| image:: https://badge.fury.io/py/dogslow-sentry.svg :target: https://pypi.org/project/dogslow-sentry/ .. |Tests status| image:: https://github.com/intgr/dogslow-sentry/workflows/Tests/badge.svg?branch=main :target: https://github.com/intgr/dogslow-sentry/actions?query=workflow:Tests Overview -------- Dogslow is a Django watchdog middleware that logs tracebacks of slow requests. Dogslow-sentry requires Python 3.7+, Django 2.2+. It started as an `internal project inside Bitbucket`_ to help trace operational problems. In 2021, the dogslow-sentry fork was created to add Sentry-specific information to reports, like full stack trace, request information, fingerprint for issue grouping, breadcrumbs, etc. .. _internal project inside Bitbucket: http://blog.bitbucket.org/2011/05/17/tracking-slow-requests-with-dogslow/ Installation ------------ Install dogslow-sentry:: $ pip install dogslow-sentry Then add ``dogslow_sentry.WatchdogMiddleware`` to your Django settings file:: MIDDLEWARE = [ 'dogslow_sentry.WatchdogMiddleware', ... ] For best results, make it one of the first middlewares that is run. Configuration ------------- Naturally, dogslow-sentry expects a `working Sentry configuration for Django`_. .. _working Sentry configuration for Django: https://docs.sentry.io/platforms/python/guides/django/ You can use the following configuration in your ``settings.py`` file to tune the watchdog:: # Watchdog is enabled by default, to temporarily disable, set to False: DOGSLOW = True # Log requests taking longer than 25 seconds: DOGSLOW_TIMER = 25 # Enable logging to Sentry DOGSLOW_SENTRY = True # Also log slow request tracebacks to Python logger DOGSLOW_LOGGER = 'dogslow_sentry' DOGSLOW_LOG_LEVEL = 'WARNING' # Tuple of url pattern names that should not be monitored: # (defaults to none -- everything monitored) DOGSLOW_IGNORE_URLS = ('some_view', 'other_view') Usage ----- Every incoming HTTP request gets a 25 second timeout in the watchdog. If a request does not return within that time, the watchdog activates and takes a peek at the request thread's stack and writes the backtrace (including all local stack variables -- Django style) to a log file. Note that ``dogslow`` only takes a peek at the thread's stack. It does not interrupt the request, or influence it in any other way. Using ``dogslow`` is therefore safe to use in production. Changelog --------- 2.0.0 (2021-12-13) * Configured GitHub Actions for CI. * Enabled testing with Python 3.10 and Django 4.0. * Fixed deprecation warning when using Python 3.10. 2.0.0b1 (2021-07-19) * Initial pre-release of ``dogslow-sentry`` fork. * Improved Sentry integration. * Dropped Python 2.7 support, now requires Python 3.7+, Django 2.2+. * Many minor tweaks. Reformatted code with Black. 1.2 (2018-01-04) * Last release of upstream ``dogslow`` package. Caveats ------- Dogslow uses multithreading. It has a single background thread that handles the watchdog timeouts and takes the tracebacks, so that the original request threads are not interrupted. This has some consequences. Multithreading and the GIL ~~~~~~~~~~~~~~~~~~~~~~~~~~ In CPython, the GIL (Global Interpreter Lock) prevents multiple threads from executing Python code simultaneously. Only when a thread explicitly releases its lock on the GIL, can a second thread run. Releasing the GIL is done automatically whenever a Python program makes blocking calls outside of the interpreter, for example when doing IO. For ``dogslow`` this means that it can only reliably intercept requests that are slow because they are doing IO, calling sleep or busy waiting to acquire locks themselves. In most cases this is fine. An important cause of slow Django requests is an expensive database query. Since this is IO, ``dogslow`` can intercept those fine. A scenario where CPython's GIL is problematic is when the request's thread hits an infinite loop in Python code (or legitimate Python that is extremely expensive and takes a long time to execute), never releasing the GIL. Even though ``dogslow``'s watchdog timer thread does become runnable, it cannot log the stack. Co-routines and Greenlets ~~~~~~~~~~~~~~~~~~~~~~~~~ ``Dogslow`` is intended for use in a synchronous worker configuration. A webserver that uses dedicated threads (or single-threaded, dedicated worker processes) to serve requests. Django's built-in wsgi server does this, as does ``Gunicorn`` in its default sync-worker mode. When running with a "co-routines framework" where multiple requests are served concurrently by one thread, backtraces might become nonsensical.

نیازمندی

مقدار	نام
>=2.2	django
>=1.0	sentry-sdk

زبان مورد نیاز

مقدار	نام
>=3.7	Python

نحوه نصب

نصب پکیج whl dogslow-sentry-2.0.0b1:

pip install dogslow-sentry-2.0.0b1.whl

نصب پکیج tar.gz dogslow-sentry-2.0.0b1:

pip install dogslow-sentry-2.0.0b1.tar.gz