.. inclusion-marker-introduction-begin
| |pypi| |wheels| |build-status| |docs| |coverage| |open_issues| |pull_requests| | |django| |python| |license| |black| |ruff| | |watchers| |stars| |forks|
.. |build-status| image:: https://github.com/jrobichaud/django-structlog/actions/workflows/main.yml/badge.svg?branch=main :target: https://github.com/jrobichaud/django-structlog/actions :alt: Build Status
.. |pypi| image:: https://img.shields.io/pypi/v/django-structlog.svg :target: https://pypi.org/project/django-structlog/ :alt: PyPI version
.. |docs| image:: https://readthedocs.org/projects/django-structlog/badge/?version=latest :target: https://django-structlog.readthedocs.io/en/latest/?badge=latest :alt: Documentation Status
.. |coverage| image:: https://img.shields.io/codecov/c/github/jrobichaud/django-structlog.svg :target: https://codecov.io/gh/jrobichaud/django-structlog :alt: codecov
.. |python| image:: https://img.shields.io/pypi/pyversions/django-structlog.svg :target: https://pypi.org/project/django-structlog/ :alt: Supported Python versions
.. |license| image:: https://img.shields.io/pypi/l/django-structlog.svg :target: https://github.com/jrobichaud/django-structlog/blob/main/LICENSE.rst :alt: License
.. |open_issues| image:: https://img.shields.io/github/issues/jrobichaud/django-structlog.svg :target: https://github.com/jrobichaud/django-structlog/issues :alt: GitHub issues
.. |django| image:: https://img.shields.io/pypi/djversions/django-structlog.svg :target: https://pypi.org/project/django-structlog/ :alt: PyPI - Django Version
.. |pull_requests| image:: https://img.shields.io/github/issues-pr/jrobichaud/django-structlog.svg :target: https://github.com/jrobichaud/django-structlog/pulls :alt: GitHub pull requests
.. |forks| image:: https://img.shields.io/github/forks/jrobichaud/django-structlog.svg?style=social :target: https://github.com/jrobichaud/django-structlog/ :alt: GitHub forks
.. |stars| image:: https://img.shields.io/github/stars/jrobichaud/django-structlog.svg?style=social :target: https://github.com/jrobichaud/django-structlog/ :alt: GitHub stars
.. |watchers| image:: https://img.shields.io/github/watchers/jrobichaud/django-structlog.svg?style=social :target: https://github.com/jrobichaud/django-structlog/ :alt: GitHub watchers
.. |wheels| image:: https://img.shields.io/pypi/wheel/django-structlog.svg :target: https://pypi.org/project/django-structlog/ :alt: PyPI - Wheel
.. |black| image:: https://img.shields.io/badge/code%20style-black-000000.svg :target: https://github.com/python/black :alt: Black
.. |ruff| image:: https://img.shields.io/endpoint?url=https://raw.githubusercontent.com/astral-sh/ruff/main/assets/badge/v2.json :target: https://github.com/astral-sh/ruff :alt: Ruff
django-structlog is a structured logging integration for Django <https://www.djangoproject.com/> project using structlog <https://www.structlog.org/>
Logging will then produce additional cohesive metadata on each logs that makes it easier to track events or incidents.
Additional Popular Integrations ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Django REST framework <https://www.django-rest-framework.org/>_
``Django REST framework`` is supported by default. But when using it with ``rest_framework.authentication.TokenAuthentication`` (or other DRF authentications) ``user_id`` will be only be in ``request_finished`` and ``request_failed`` instead of each logs.
See `#37 <https://github.com/jrobichaud/django-structlog/issues/37>`_ for details.
`django-ninja <https://django-ninja.dev/>`_django-ninja is supported by default 🥷.
Celery <http://www.celeryproject.org/>_
Celery's task logging requires additional configurations, see `documentation <https://django-structlog.readthedocs.io/en/latest/celery.html>`_ for details.
Logging comparison
^^^^^^^^^^^^^^^^^^
Standard logging:.. code-block:: python
import logging logger = logging.get_logger(name) logger.info("An error occurred")
.. code-block:: bash
An error occurred
Well... ok
With django-structlog and flat_line:
.. code-block:: python
>>> import structlog
>>> logger = structlog.get_logger(__name__)
>>> logger.info("an_error_occurred", bar="Buz")
.. code-block:: bash
timestamp='2019-04-13T19:39:31.089925Z' level='info' event='an_error_occurred' logger='my_awesome_project.my_awesome_module' request_id='3a8f801c-072b-4805-8f38-e1337f363ed4' user_id=1 ip='0.0.0.0' bar='Buz'
Then you can search with commands like:
.. code-block:: bash
$ cat logs/flat_line.log | grep request_id='3a8f801c-072b-4805-8f38-e1337f363ed4'
With django-structlog and json.. code-block:: python
import structlog logger = structlog.get_logger(name) logger.info("an_error_occurred", bar="Buz")
.. code-block:: json
{"request_id": "3a8f801c-072b-4805-8f38-e1337f363ed4", "user_id": 1, "ip": "0.0.0.0", "event": "an_error_occurred", "timestamp": "2019-04-13T19:39:31.089925Z", "logger": "my_awesome_project.my_awesome_module", "level": "info", "bar": "Buz"}
Then you can search with commands like:
.. code-block:: bash
$ cat logs/json.log | jq '.[] | select(.request_id="3a8f801c-072b-4805-8f38-e1337f363ed4")' -s
.. inclusion-marker-introduction-end
.. inclusion-marker-getting-started-begin
These steps will show how to integrate the middleware to your awesome application.
Installation ^^^^^^^^^^^^
Install the library
.. code-block:: bash
pip install django-structlog
Add app
.. code-block:: python
INSTALLED_APP = [
"django_structlog",
# ...]
Add middleware
.. code-block:: python
MIDDLEWARE = [
"django_structlog.middlewares.RequestMiddleware",]
Add appropriate structlog configuration to your settings.py
.. code-block:: python
import structlog
LOGGING = { "version": 1, "disable_existing_loggers": False, "formatters": { "json_formatter": { "()": structlog.stdlib.ProcessorFormatter, "processor": structlog.processors.JSONRenderer(), }, "plain_console": { "()": structlog.stdlib.ProcessorFormatter, "processor": structlog.dev.ConsoleRenderer(), }, "key_value": { "()": structlog.stdlib.ProcessorFormatter, "processor": structlog.processors.KeyValueRenderer(key_order=['timestamp', 'level', 'event', 'logger']), }, }, "handlers": {
#
# 1. Make sure you use handlers adapted for your project.
# These handlers configurations are only examples for this library.
# See python's logging.handlers: https://docs.python.org/3/library/logging.handlers.html
#
# 2. You might also want to use different logging configurations depending of the environment.
# Different files (local.py, tests.py, production.py, ci.py, etc.) or only conditions.
# See https://docs.djangoproject.com/en/dev/topics/settings/#designating-the-settings
"console": {
"class": "logging.StreamHandler",
"formatter": "plain_console",
},
"json_file": {
"class": "logging.handlers.WatchedFileHandler",
"filename": "logs/json.log",
"formatter": "json_formatter",
},
"flat_line_file": {
"class": "logging.handlers.WatchedFileHandler",
"filename": "logs/flat_line.log",
"formatter": "key_value",
},
},
"loggers": {
"django_structlog": {
"handlers": ["console", "flat_line_file", "json_file"],
"level": "INFO",
},
# Make sure to replace the following logger's name for yours
"django_structlog_demo_project": {
"handlers": ["console", "flat_line_file", "json_file"],
"level": "INFO",
},
}}
structlog.configure( processors=[ structlog.contextvars.merge_contextvars, structlog.stdlib.filter_by_level, structlog.processors.TimeStamper(fmt="iso"), structlog.stdlib.add_logger_name, structlog.stdlib.add_log_level, structlog.stdlib.PositionalArgumentsFormatter(), structlog.processors.StackInfoRenderer(), structlog.processors.format_exc_info, structlog.processors.UnicodeDecoder(), structlog.stdlib.ProcessorFormatter.wrap_for_formatter, ], logger_factory=structlog.stdlib.LoggerFactory(), cache_logger_on_first_use=True, )
Start logging with structlog instead of logging.
.. code-block:: python
import structlog logger = structlog.get_logger(name)
.. _django_signals:
Extending Request Log Metadata ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
By default only a request_id and the user_id are bound from the request but pertinent log metadata may vary from a project to another.
If you need to add more metadata from the request you can implement a convenient signal receiver to bind them. You can also override existing bound metadata the same way.
.. code-block:: python
from django.contrib.sites.shortcuts import get_current_site
from django.dispatch import receiver
from django_structlog import signals
import structlog
@receiver(signals.bind_extra_request_metadata)
def bind_domain(request, logger, **kwargs):
current_site = get_current_site(request)
structlog.contextvars.bind_contextvars(domain=current_site.domain)Standard Loggers ^^^^^^^^^^^^^^^^
It is also possible to log using standard python logger.
In your formatters, add the foreign_pre_chain section, and then add structlog.contextvars.merge_contextvars:
.. code-block:: python
LOGGING = { "version": 1, "disable_existing_loggers": False, "formatters": { "json_formatter": { "()": structlog.stdlib.ProcessorFormatter, "processor": structlog.processors.JSONRenderer(),
"foreign_pre_chain": [
structlog.contextvars.merge_contextvars, # <---- add this
# customize the rest as you need
structlog.processors.TimeStamper(fmt="iso"),
structlog.stdlib.add_logger_name,
structlog.stdlib.add_log_level,
structlog.stdlib.PositionalArgumentsFormatter(),
],
},
},
...
}.. inclusion-marker-getting-started-end
.. inclusion-marker-example-outputs-begin
Flat lines file (\ logs/flat_lines.log\ )
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
.. code-block:: bash
timestamp='2019-04-13T19:39:29.321453Z' level='info' event='request_started' logger='django_structlog.middlewares.request' request_id='c53dff1d-3fc5-4257-a78a-9a567c937561' user_id=1 ip='0.0.0.0' request=GET / user_agent='Mozilla/5.0 (Macintosh; Intel Mac OS X 10_14_4) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/73.0.3683.86 Safari/537.36' timestamp='2019-04-13T19:39:29.345207Z' level='info' event='request_finished' logger='django_structlog.middlewares.request' request_id='c53dff1d-3fc5-4257-a78a-9a567c937561' user_id=1 ip='0.0.0.0' code=200 timestamp='2019-04-13T19:39:31.086155Z' level='info' event='request_started' logger='django_structlog.middlewares.request' request_id='3a8f801c-072b-4805-8f38-e1337f363ed4' user_id=1 ip='0.0.0.0' request=POST /success_task user_agent='Mozilla/5.0 (Macintosh; Intel Mac OS X 10_14_4) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/73.0.3683.86 Safari/537.36' timestamp='2019-04-13T19:39:31.089925Z' level='info' event='Enqueuing successful task' logger='django_structlog_demo_project.home.views' request_id='3a8f801c-072b-4805-8f38-e1337f363ed4' user_id=1 ip='0.0.0.0' timestamp='2019-04-13T19:39:31.147590Z' level='info' event='task_enqueued' logger='django_structlog.middlewares.celery' request_id='3a8f801c-072b-4805-8f38-e1337f363ed4' user_id=1 ip='0.0.0.0' child_task_id='6b11fd80-3cdf-4de5-acc2-3fd4633aa654' timestamp='2019-04-13T19:39:31.153081Z' level='info' event='This is a successful task' logger='django_structlog_demo_project.taskapp.celery' task_id='6b11fd80-3cdf-4de5-acc2-3fd4633aa654' request_id='3a8f801c-072b-4805-8f38-e1337f363ed4' user_id=1 ip='0.0.0.0' timestamp='2019-04-13T19:39:31.160043Z' level='info' event='request_finished' logger='django_structlog.middlewares.request' request_id='3a8f801c-072b-4805-8f38-e1337f363ed4' user_id=1 ip='0.0.0.0' code=201 timestamp='2019-04-13T19:39:31.162372Z' level='info' event='task_succeed' logger='django_structlog.middlewares.celery' task_id='6b11fd80-3cdf-4de5-acc2-3fd4633aa654' request_id='3a8f801c-072b-4805-8f38-e1337f363ed4' user_id=1 ip='0.0.0.0' result='None'
Json file (\ logs/json.log\ )
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
.. code-block:: json
{"request_id": "c53dff1d-3fc5-4257-a78a-9a567c937561", "user_id": 1, "ip": "0.0.0.0", "request": "GET /", "user_agent": "Mozilla/5.0 (Macintosh; Intel Mac OS X 10_14_4) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/73.0.3683.86 Safari/537.36", "event": "request_started", "timestamp": "2019-04-13T19:39:29.321453Z", "logger": "django_structlog.middlewares.request", "level": "info"} {"request_id": "c53dff1d-3fc5-4257-a78a-9a567c937561", "user_id": 1, "ip": "0.0.0.0", "code": 200, "event": "request_finished", "timestamp": "2019-04-13T19:39:29.345207Z", "logger": "django_structlog.middlewares.request", "level": "info"} {"request_id": "3a8f801c-072b-4805-8f38-e1337f363ed4", "user_id": 1, "ip": "0.0.0.0", "request": "POST /success_task", "user_agent": "Mozilla/5.0 (Macintosh; Intel Mac OS X 10_14_4) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/73.0.3683.86 Safari/537.36", "event": "request_started", "timestamp": "2019-04-13T19:39:31.086155Z", "logger": "django_structlog.middlewares.request", "level": "info"} {"request_id": "3a8f801c-072b-4805-8f38-e1337f363ed4", "user_id": 1, "ip": "0.0.0.0", "event": "Enqueuing successful task", "timestamp": "2019-04-13T19:39:31.089925Z", "logger": "django_structlog_demo_project.home.views", "level": "info"} {"request_id": "3a8f801c-072b-4805-8f38-e1337f363ed4", "user_id": 1, "ip": "0.0.0.0", "child_task_id": "6b11fd80-3cdf-4de5-acc2-3fd4633aa654", "event": "task_enqueued", "timestamp": "2019-04-13T19:39:31.147590Z", "logger": "django_structlog.middlewares.celery", "level": "info"} {"task_id": "6b11fd80-3cdf-4de5-acc2-3fd4633aa654", "request_id": "3a8f801c-072b-4805-8f38-e1337f363ed4", "user_id": 1, "ip": "0.0.0.0", "event": "This is a successful task", "timestamp": "2019-04-13T19:39:31.153081Z", "logger": "django_structlog_demo_project.taskapp.celery", "level": "info"} {"request_id": "3a8f801c-072b-4805-8f38-e1337f363ed4", "user_id": 1, "ip": "0.0.0.0", "code": 201, "event": "request_finished", "timestamp": "2019-04-13T19:39:31.160043Z", "logger": "django_structlog.middlewares.request", "level": "info"} {"task_id": "6b11fd80-3cdf-4de5-acc2-3fd4633aa654", "request_id": "3a8f801c-072b-4805-8f38-e1337f363ed4", "user_id": 1, "ip": "0.0.0.0", "result": "None", "event": "task_succeed", "timestamp": "2019-04-13T19:39:31.162372Z", "logger": "django_structlog.middlewares.celery", "level": "info"}
.. inclusion-marker-example-outputs-end
.. inclusion-marker-upgrade-guide-begin
.. _upgrade_8.0:
Upgrading to 8.0+ ^^^^^^^^^^^^^^^^^
A new keyword argument log_kwargs was added to the the optional signals:
django_structlog.signals.bind_extra_request_metadata;django_structlog.signals.bind_extra_request_finished_metadata;django_structlog.signals.bind_extra_request_failed_metadata.It should not affect you if you have a **kwargs in the signature of your receivers.
log_kwargs is a dictionary containing the log metadata that will be added to their respective logs ("request_started", "request_finished", "request_failed").
If you use any of these signals, you may need to update your receiver to accept this new argument:
.. code-block:: python
from django.contrib.sites.shortcuts import get_current_site
from django.dispatch import receiver
from django_structlog import signals
import structlog
@receiver(signals.bind_extra_request_metadata)
def my_receiver(request, logger, log_kwargs, **kwargs): # <- add `log_kwargs` if necessary
...
@receiver(signals.bind_extra_request_finished_metadata)
def my_receiver_finished(request, logger, response, log_kwargs, **kwargs): # <- add `log_kwargs` if necessary
...
@receiver(signals.bind_extra_request_failed_metadata)
def my_receiver_failed(request, logger, exception, log_kwargs, **kwargs): # <- add `log_kwargs` if necessary
..... _upgrade_7.0:
Upgrading to 7.0+ ^^^^^^^^^^^^^^^^^
The dependency django-ipware <https://github.com/un33k/django-ipware>_ was upgraded to version 6. This library is used to retrieve the request's ip address.
Version 6 may have some breaking changes <https://github.com/un33k/django-ipware/compare/v5.0.2...v6.0.2#diff-b335630551682c19a781afebcf4d07bf978fb1f8ac04c6bf87428ed5106870f5R97>_ if you did customizations.
It should not affect most of the users but if you did some customizations, you might need to update your configurations.
.. _upgrade_6.0:
Upgrading to 6.0+ ^^^^^^^^^^^^^^^^^
Minimum requirements
- requires python 3.8+
Changes to dodjango_structlog to installed app.. code-block:: python
INSTALLED_APP = [
"django_structlog",
# ...]
django_structlog.middlewares.RequestMiddlewareIf you used any of the experimental async or sync middlewares, you do not need to anymore.
Make sure you use django_structlog.middlewares.RequestMiddleware instead of any of the other request middlewares commented below:
.. code-block:: python
MIDDLEWARE += [
# "django_structlog.middlewares.request_middleware_router", # <- remove
# "django_structlog.middlewares.requests.SyncRequestMiddleware", # <- remove
# "django_structlog.middlewares.requests.AsyncRequestMiddleware", # <- remove
"django_structlog.middlewares.RequestMiddleware", # <- make sure you use this one
]DJANGO_STRUCTLOG_CELERY_ENABLED = TrueIt is only applicable if you use celery integration.
django_structlog.middlewares.CeleryMiddleware has been remove in favor of a django settings.
.. code-block:: python
MIDDLEWARE += [
"django_structlog.middlewares.RequestMiddleware",
# "django_structlog.middlewares.CeleryMiddleware", # <- remove this
]
DJANGO_STRUCTLOG_CELERY_ENABLED = True # <-- add this.. _upgrade_5.0:
Upgrading to 5.0+ ^^^^^^^^^^^^^^^^^
Minimum requirements
- requires asgiref 3.6+
.. _upgrade_4.0:
Upgrading to 4.0+
^^^^^^^^^^^^^^^^^
``django-structlog`` drops support of django below 3.2.
Minimum requirementsChanges if you use celery
You can now install ``django-structlog`` explicitly with ``celery`` extra in order to validate the compatibility with your version of ``celery``.
.. code-block:: bash
django-structlog[celery]==4.0.0
See `Installing “Extras” <https://packaging.python.org/en/latest/tutorials/installing-packages/#installing-extras>`_ for more information about this ``pip`` feature.
.. _upgrade_3.0:
Upgrading to 3.0+
^^^^^^^^^^^^^^^^^
``django-structlog`` now use `structlog.contextvars.bind_contextvars <https://www.structlog.org/en/stable/contextvars.html>`_ instead of ``threadlocal``.
Minimum requirementsChanges you need to do
1. Update structlog settings
----------------------------
- add ``structlog.contextvars.merge_contextvars`` as first ``processors``
- remove ``context_class=structlog.threadlocal.wrap_dict(dict),``
- (if you use standard loggers) add ``structlog.contextvars.merge_contextvars`` in `foreign_pre_chain`
- (if you use standard loggers) remove ``django_structlog.processors.inject_context_dict,``
.. code-block:: python
structlog.configure(
processors=[
structlog.contextvars.merge_contextvars, # <---- add this
structlog.stdlib.filter_by_level,
structlog.processors.TimeStamper(fmt="iso"),
structlog.stdlib.add_logger_name,
structlog.stdlib.add_log_level,
structlog.stdlib.PositionalArgumentsFormatter(),
structlog.processors.StackInfoRenderer(),
structlog.processors.format_exc_info,
structlog.processors.UnicodeDecoder(),
structlog.stdlib.ProcessorFormatter.wrap_for_formatter,
],
# context_class=structlog.threadlocal.wrap_dict(dict), # <---- remove this
logger_factory=structlog.stdlib.LoggerFactory(),
cache_logger_on_first_use=True,
)
# If you use standard logging
LOGGING = {
"version": 1,
"disable_existing_loggers": False,
"formatters": {
"json_formatter": {
"()": structlog.stdlib.ProcessorFormatter,
"processor": structlog.processors.JSONRenderer(),
"foreign_pre_chain": [
structlog.contextvars.merge_contextvars, # <---- add this
# django_structlog.processors.inject_context_dict, # <---- remove this
structlog.processors.TimeStamper(fmt="iso"),
structlog.stdlib.add_logger_name,
structlog.stdlib.add_log_level,
structlog.stdlib.PositionalArgumentsFormatter(),
],
},
},
...
}
2. Replace all ``logger.bind`` with ``structlog.contextvars.bind_contextvars``
------------------------------------------------------------------------------
.. code-block:: python
@receiver(bind_extra_request_metadata)
def bind_domain(request, logger, **kwargs):
current_site = get_current_site(request)
# logger.bind(domain=current_site.domain)
structlog.contextvars.bind_contextvars(domain=current_site.domain)
.. _upgrade_2.0:
Upgrading to 2.0+
^^^^^^^^^^^^^^^^^
``django-structlog`` was originally developed using the debug configuration `ExceptionPrettyPrinter <https://www.structlog.org/en/stable/api.html#structlog.processors.ExceptionPrettyPrinter>`_ which led to incorrect handling of exception.
- remove ``structlog.processors.ExceptionPrettyPrinter(),`` of your processors.
- make sure you have ``structlog.processors.format_exc_info,`` in your processors if you want appropriate exception logging.
.. inclusion-marker-upgrade-guide-end
.. inclusion-marker-running-tests-begin
Running the tests
=================
Note: For the moment redis is needed to run the tests. The easiest way is to start docker demo's redis.
.. code-block:: bash
docker compose up -d redis
pip install -r requirements.txt
env CELERY_BROKER_URL=redis://0.0.0.0:6379 DJANGO_SETTINGS_MODULE=config.settings.test pytest test_app
env CELERY_BROKER_URL=redis://0.0.0.0:6379 DJANGO_SETTINGS_MODULE=config.settings.test_demo_app pytest django_structlog_demo_project
docker compose stop redis
.. inclusion-marker-running-tests-end
.. inclusion-marker-demo-begin
Demo app
========
.. code-block:: bash
docker compose up --build
Open ``http://127.0.0.1:8000/`` in your browser.
Navigate while looking into the log files and shell's output.
.. inclusion-marker-demo-end
.. inclusion-marker-authors-begin
Authors
=======
* **Jules Robichaud-Gagnon** - *Initial work* - `jrobichaud <https://github.com/jrobichaud>`_
See also the list of `contributors <https://github.com/jrobichaud/django-structlog/contributors>`_ who participated in this project.
.. inclusion-marker-authors-end
.. inclusion-marker-acknowledgements-begin
Acknowledgments
===============
* Very huge thanks to my awesome 🦄 and generous employer `TLM 🩵💜❤️🧡💚🐈⬛ <https://tlmgo.com/en/>`_ for letting me maintain this project on my work hours because it believes in open source.
* Big thanks to `@ferd <https://github.com/ferd>`_ for his `bad opinions <https://ferd.ca/erlang-otp-21-s-new-logger.html>`_ that inspired the author enough to spend time on this library.
* `This issue <https://github.com/hynek/structlog/issues/175>`_ helped the author to figure out how to integrate ``structlog`` in Django.
* `This stack overflow question <https://stackoverflow.com/questions/43855507/configuring-and-using-structlog-with-django>`_ was also helpful.
.. inclusion-marker-acknowledgements-end
License
=======
This project is licensed under the MIT License - see the `LICENSE <https://github.com/jrobichaud/django-structlog/blob/main/LICENSE.rst>`_ file for details