Django GUID
===========
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--------------
Django GUID attaches a unique correlation ID/request ID to all your log outputs for every request.
In other words, all logs connected to a request now has a unique ID attached to it, making debugging simple.
Which version of Django GUID you should use depends on your Django version and whether you run ``ASGI`` or ``WSGI`` servers.
To determine which Django-GUID version you should use, please see the table below.
+---------------------+--------------------------+
| Django version | Django-GUID version |
+=====================+==========================+
| 3.1.1 or above | 3.x.x - ASGI and WSGI |
+---------------------+--------------------------+
| 3.0.0 - 3.1.0 | 2.x.x - Only WSGI |
+---------------------+--------------------------+
| 2.2.x | 2.x.x - Only WSGI |
+---------------------+--------------------------+
Django GUID >= 3.0.0 uses ``ContextVar`` to store and access the GUID. Previous versions stored the GUID to an object,
making it accessible by using the ID of the current thread. (Version 2 of Django GUID is supported until Django2.2 LTS has passed.)
--------------
**Resources**:
* Free software: BSD License
* Documentation: https://django-guid.readthedocs.io
* Homepage: https://github.com/snok/django-guid
--------------
**Examples**
Log output with a GUID:
.. code-block::
INFO ... [773fa6885e03493498077a273d1b7f2d] project.views This is a DRF view log, and should have a GUID.
WARNING ... [773fa6885e03493498077a273d1b7f2d] project.services.file Some warning in a function
INFO ... [0d1c3919e46e4cd2b2f4ac9a187a8ea1] project.views This is a DRF view log, and should have a GUID.
INFO ... [99d44111e9174c5a9494275aa7f28858] project.views This is a DRF view log, and should have a GUID.
WARNING ... [0d1c3919e46e4cd2b2f4ac9a187a8ea1] project.services.file Some warning in a function
WARNING ... [99d44111e9174c5a9494275aa7f28858] project.services.file Some warning in a function
Log output without a GUID:
.. code-block::
INFO ... project.views This is a DRF view log, and should have a GUID.
WARNING ... project.services.file Some warning in a function
INFO ... project.views This is a DRF view log, and should have a GUID.
INFO ... project.views This is a DRF view log, and should have a GUID.
WARNING ... project.services.file Some warning in a function
WARNING ... project.services.file Some warning in a function
See the `documentation <https://django-guid.readthedocs.io>`_ for more examples.
************
Installation
************
Install using pip:
.. code-block:: bash
pip install django-guid
********
Settings
********
Package settings are added in your ``settings.py``:
.. code-block:: python
DJANGO_GUID = {
'GUID_HEADER_NAME': 'Correlation-ID',
'VALIDATE_GUID': True,
'RETURN_HEADER': True,
'EXPOSE_HEADER': True,
'INTEGRATIONS': [],
'IGNORE_URLS': [],
'UUID_LENGTH': 32,
}
**Optional Parameters**
* :code:`GUID_HEADER_NAME`
The name of the GUID to look for in a header in an incoming request. Remember that it's case insensitive.
Default: Correlation-ID
* :code:`VALIDATE_GUID`
Whether the :code:`GUID_HEADER_NAME` should be validated or not.
If the GUID sent to through the header is not a valid GUID (:code:`uuid.uuid4`).
Default: True
* :code:`RETURN_HEADER`
Whether to return the GUID (Correlation-ID) as a header in the response or not.
It will have the same name as the :code:`GUID_HEADER_NAME` setting.
Default: True
* :code:`EXPOSE_HEADER`
Whether to return :code:`Access-Control-Expose-Headers` for the GUID header if
:code:`RETURN_HEADER` is :code:`True`, has no effect if :code:`RETURN_HEADER` is :code:`False`.
This is allows the JavaScript Fetch API to access the header when CORS is enabled.
Default: True
* :code:`INTEGRATIONS`
Whether to enable any custom or available integrations with :code:`django_guid`.
As an example, using :code:`SentryIntegration()` as an integration would set Sentry's :code:`transaction_id` to
match the GUID used by the middleware.
Default: []
* :code:`IGNORE_URLS`
URL endpoints where the middleware will be disabled. You can put your health check endpoints here.
Default: []
* :code:`UUID_LENGTH`
Lets you optionally trim the length of the package generated UUIDs.
Default: 32
*************
Configuration
*************
Once settings have set up, add the following to your projects' ``settings.py``:
1. Installed Apps
=================
Add :code:`django_guid` to your :code:`INSTALLED_APPS`:
.. code-block:: python
INSTALLED_APPS = [
...
'django_guid',
]
2. Middleware
=============
Add the :code:`django_guid.middleware.guid_middleware` to your ``MIDDLEWARE``:
.. code-block:: python
MIDDLEWARE = [
'django_guid.middleware.guid_middleware',
...
]
It is recommended that you add the middleware at the top, so that the remaining middleware loggers include the requests GUID.
3. Logging Configuration
========================
Add :code:`django_guid.log_filters.CorrelationId` as a filter in your ``LOGGING`` configuration:
.. code-block:: python
LOGGING = {
...
'filters': {
'correlation_id': {
'()': 'django_guid.log_filters.CorrelationId'
}
}
}
Put that filter in your handler:
.. code-block:: python
LOGGING = {
...
'handlers': {
'console': {
'class': 'logging.StreamHandler',
'formatter': 'medium',
'filters': ['correlation_id'],
}
}
}
And make sure to add the new ``correlation_id`` filter to one or all of your formatters:
.. code-block:: python
LOGGING = {
...
'formatters': {
'medium': {
'format': '%(levelname)s %(asctime)s [%(correlation_id)s] %(name)s %(message)s'
}
}
}
If these settings were confusing, please have a look in the demo projects'
`settings.py <https://github.com/snok/django-guid/blob/master/demoproj/settings.py>`_ file for a complete example.
4. Django GUID Logger (Optional)
================================
If you wish to see the Django GUID middleware outputs, you may configure a logger for the module.
Simply add django_guid to your loggers in the project, like in the example below:
.. code-block:: python
LOGGING = {
...
'loggers': {
'django_guid': {
'handlers': ['console', 'logstash'],
'level': 'WARNING',
'propagate': False,
}
}
}
This is especially useful when implementing the package, if you plan to pass existing GUIDs to the middleware, as misconfigured GUIDs will not raise exceptions, but will generate warning logs.
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"description": "Django GUID\n===========\n\n\n.. image:: https://img.shields.io/pypi/v/django-guid.svg\n :target: https://pypi.org/pypi/django-guid\n\n.. image:: https://img.shields.io/badge/python-3.6+-blue.svg\n :target: https://pypi.python.org/pypi/django-guid#downloads\n\n.. image:: https://img.shields.io/badge/django-2.2%20|%203.0%20|%203.1%20-blue.svg\n :target: https://pypi.python.org/pypi/django-guid\n\n.. image:: https://img.shields.io/badge/ASGI-supported-brightgreen.svg\n :target: https://img.shields.io/badge/ASGI-supported-brightgreen.svg\n\n.. image:: https://img.shields.io/badge/WSGI-supported-brightgreen.svg\n :target: https://img.shields.io/badge/WSGI-supported-brightgreen.svg\n\n.. image:: https://readthedocs.org/projects/django-guid/badge/?version=latest\n :target: https://django-guid.readthedocs.io/en/latest/?badge=latest\n\n.. image:: https://codecov.io/gh/snok/django-guid/branch/master/graph/badge.svg\n :target: https://codecov.io/gh/snok/django-guid\n\n.. image:: https://img.shields.io/badge/code%20style-black-000000.svg\n :target: https://github.com/psf/black\n\n.. image:: https://img.shields.io/badge/pre--commit-enabled-brightgreen?logo=pre-commit&logoColor=white\n :target: https://github.com/pre-commit/pre-commit\n\n\n\n--------------\n\n\nDjango GUID attaches a unique correlation ID/request ID to all your log outputs for every request.\nIn other words, all logs connected to a request now has a unique ID attached to it, making debugging simple.\n\nWhich version of Django GUID you should use depends on your Django version and whether you run ``ASGI`` or ``WSGI`` servers.\nTo determine which Django-GUID version you should use, please see the table below.\n\n+---------------------+--------------------------+\n| Django version | Django-GUID version |\n+=====================+==========================+\n| 3.1.1 or above | 3.x.x - ASGI and WSGI |\n+---------------------+--------------------------+\n| 3.0.0 - 3.1.0 | 2.x.x - Only WSGI |\n+---------------------+--------------------------+\n| 2.2.x | 2.x.x - Only WSGI |\n+---------------------+--------------------------+\n\nDjango GUID >= 3.0.0 uses ``ContextVar`` to store and access the GUID. Previous versions stored the GUID to an object,\nmaking it accessible by using the ID of the current thread. (Version 2 of Django GUID is supported until Django2.2 LTS has passed.)\n\n--------------\n\n\n**Resources**:\n\n* Free software: BSD License\n* Documentation: https://django-guid.readthedocs.io\n* Homepage: https://github.com/snok/django-guid\n\n--------------\n\n\n**Examples**\n\nLog output with a GUID:\n\n.. code-block::\n\n INFO ... [773fa6885e03493498077a273d1b7f2d] project.views This is a DRF view log, and should have a GUID.\n WARNING ... [773fa6885e03493498077a273d1b7f2d] project.services.file Some warning in a function\n INFO ... [0d1c3919e46e4cd2b2f4ac9a187a8ea1] project.views This is a DRF view log, and should have a GUID.\n INFO ... [99d44111e9174c5a9494275aa7f28858] project.views This is a DRF view log, and should have a GUID.\n WARNING ... [0d1c3919e46e4cd2b2f4ac9a187a8ea1] project.services.file Some warning in a function\n WARNING ... [99d44111e9174c5a9494275aa7f28858] project.services.file Some warning in a function\n\n\nLog output without a GUID:\n\n.. code-block::\n\n INFO ... project.views This is a DRF view log, and should have a GUID.\n WARNING ... project.services.file Some warning in a function\n INFO ... project.views This is a DRF view log, and should have a GUID.\n INFO ... project.views This is a DRF view log, and should have a GUID.\n WARNING ... project.services.file Some warning in a function\n WARNING ... project.services.file Some warning in a function\n\n\nSee the `documentation <https://django-guid.readthedocs.io>`_ for more examples.\n\n************\nInstallation\n************\n\nInstall using pip:\n\n.. code-block:: bash\n\n pip install django-guid\n\n\n********\nSettings\n********\n\nPackage settings are added in your ``settings.py``:\n\n.. code-block:: python\n\n DJANGO_GUID = {\n 'GUID_HEADER_NAME': 'Correlation-ID',\n 'VALIDATE_GUID': True,\n 'RETURN_HEADER': True,\n 'EXPOSE_HEADER': True,\n 'INTEGRATIONS': [],\n 'IGNORE_URLS': [],\n 'UUID_LENGTH': 32,\n }\n\n\n\n**Optional Parameters**\n\n* :code:`GUID_HEADER_NAME`\n The name of the GUID to look for in a header in an incoming request. Remember that it's case insensitive.\n\n Default: Correlation-ID\n\n* :code:`VALIDATE_GUID`\n Whether the :code:`GUID_HEADER_NAME` should be validated or not.\n If the GUID sent to through the header is not a valid GUID (:code:`uuid.uuid4`).\n\n Default: True\n\n* :code:`RETURN_HEADER`\n Whether to return the GUID (Correlation-ID) as a header in the response or not.\n It will have the same name as the :code:`GUID_HEADER_NAME` setting.\n\n Default: True\n\n* :code:`EXPOSE_HEADER`\n Whether to return :code:`Access-Control-Expose-Headers` for the GUID header if\n :code:`RETURN_HEADER` is :code:`True`, has no effect if :code:`RETURN_HEADER` is :code:`False`.\n This is allows the JavaScript Fetch API to access the header when CORS is enabled.\n\n Default: True\n\n* :code:`INTEGRATIONS`\n Whether to enable any custom or available integrations with :code:`django_guid`.\n As an example, using :code:`SentryIntegration()` as an integration would set Sentry's :code:`transaction_id` to\n match the GUID used by the middleware.\n\n Default: []\n\n* :code:`IGNORE_URLS`\n URL endpoints where the middleware will be disabled. You can put your health check endpoints here.\n\n Default: []\n\n* :code:`UUID_LENGTH`\n Lets you optionally trim the length of the package generated UUIDs.\n\n Default: 32\n\n*************\nConfiguration\n*************\n\nOnce settings have set up, add the following to your projects' ``settings.py``:\n\n1. Installed Apps\n=================\n\nAdd :code:`django_guid` to your :code:`INSTALLED_APPS`:\n\n.. code-block:: python\n\n INSTALLED_APPS = [\n ...\n 'django_guid',\n ]\n\n\n2. Middleware\n=============\n\nAdd the :code:`django_guid.middleware.guid_middleware` to your ``MIDDLEWARE``:\n\n.. code-block:: python\n\n MIDDLEWARE = [\n 'django_guid.middleware.guid_middleware',\n ...\n ]\n\n\nIt is recommended that you add the middleware at the top, so that the remaining middleware loggers include the requests GUID.\n\n3. Logging Configuration\n========================\n\nAdd :code:`django_guid.log_filters.CorrelationId` as a filter in your ``LOGGING`` configuration:\n\n.. code-block:: python\n\n LOGGING = {\n ...\n 'filters': {\n 'correlation_id': {\n '()': 'django_guid.log_filters.CorrelationId'\n }\n }\n }\n\nPut that filter in your handler:\n\n.. code-block:: python\n\n LOGGING = {\n ...\n 'handlers': {\n 'console': {\n 'class': 'logging.StreamHandler',\n 'formatter': 'medium',\n 'filters': ['correlation_id'],\n }\n }\n }\n\nAnd make sure to add the new ``correlation_id`` filter to one or all of your formatters:\n\n.. code-block:: python\n\n LOGGING = {\n ...\n 'formatters': {\n 'medium': {\n 'format': '%(levelname)s %(asctime)s [%(correlation_id)s] %(name)s %(message)s'\n }\n }\n }\n\n\nIf these settings were confusing, please have a look in the demo projects'\n`settings.py <https://github.com/snok/django-guid/blob/master/demoproj/settings.py>`_ file for a complete example.\n\n4. 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