Skip to main content

Middleware that enables single request-response cycle tracing by injecting a unique ID into project logs

Project description

Django GUID

https://img.shields.io/pypi/v/django-guid.svg https://img.shields.io/badge/python-3.6+-blue.svg https://img.shields.io/badge/django-2.2%20|%203.0%20|%203.1%20-blue.svg https://img.shields.io/badge/ASGI-supported-brightgreen.svg https://img.shields.io/badge/WSGI-supported-brightgreen.svg https://readthedocs.org/projects/django-guid/badge/?version=latest https://codecov.io/gh/snok/django-guid/branch/master/graph/badge.svg https://img.shields.io/badge/code%20style-black-000000.svg https://img.shields.io/badge/pre--commit-enabled-brightgreen?logo=pre-commit&logoColor=white

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:


Examples

Log output with a GUID:

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:

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 for more examples.

Installation

Install using pip:

pip install django-guid

Settings

Package settings are added in your settings.py:

DJANGO_GUID = {
    'GUID_HEADER_NAME': 'Correlation-ID',
    'VALIDATE_GUID': True,
    'RETURN_HEADER': True,
    'EXPOSE_HEADER': True,
    'INTEGRATIONS': [],
    'IGNORE_URLS': [],
    'UUID_LENGTH': 32,
}

Optional Parameters

  • 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

  • VALIDATE_GUID

    Whether the GUID_HEADER_NAME should be validated or not. If the GUID sent to through the header is not a valid GUID (uuid.uuid4).

    Default: True

  • 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 GUID_HEADER_NAME setting.

    Default: True

  • EXPOSE_HEADER

    Whether to return Access-Control-Expose-Headers for the GUID header if RETURN_HEADER is True, has no effect if RETURN_HEADER is False. This is allows the JavaScript Fetch API to access the header when CORS is enabled.

    Default: True

  • INTEGRATIONS

    Whether to enable any custom or available integrations with django_guid. As an example, using SentryIntegration() as an integration would set Sentry’s transaction_id to match the GUID used by the middleware.

    Default: []

  • IGNORE_URLS

    URL endpoints where the middleware will be disabled. You can put your health check endpoints here.

    Default: []

  • 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 django_guid to your INSTALLED_APPS:

INSTALLED_APPS = [
    ...
    'django_guid',
]

2. Middleware

Add the django_guid.middleware.guid_middleware to your MIDDLEWARE:

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 django_guid.log_filters.CorrelationId as a filter in your LOGGING configuration:

LOGGING = {
    ...
    'filters': {
        'correlation_id': {
            '()': 'django_guid.log_filters.CorrelationId'
        }
    }
}

Put that filter in your handler:

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:

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 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:

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.

Project details


Download files

Download the file for your platform. If you're not sure which to choose, learn more about installing packages.

Source Distribution

django_guid-3.5.0.tar.gz (14.1 kB view details)

Uploaded Source

Built Distribution

django_guid-3.5.0-py3-none-any.whl (19.7 kB view details)

Uploaded Python 3

File details

Details for the file django_guid-3.5.0.tar.gz.

File metadata

  • Download URL: django_guid-3.5.0.tar.gz
  • Upload date:
  • Size: 14.1 kB
  • Tags: Source
  • Uploaded using Trusted Publishing? No
  • Uploaded via: poetry/1.8.2 CPython/3.11.9 Linux/6.5.0-1018-azure

File hashes

Hashes for django_guid-3.5.0.tar.gz
Algorithm Hash digest
SHA256 5f32f70287e4f36addc79f29f2a7b2f56fc5f4e4cfb2023141525be8baa35d9e
MD5 292c72fefd75d3e63bcafec8078150cc
BLAKE2b-256 a912629715b6aefc76b3626934614e5139e7cf4be76e3a5cc07dedb57416fdd2

See more details on using hashes here.

File details

Details for the file django_guid-3.5.0-py3-none-any.whl.

File metadata

  • Download URL: django_guid-3.5.0-py3-none-any.whl
  • Upload date:
  • Size: 19.7 kB
  • Tags: Python 3
  • Uploaded using Trusted Publishing? No
  • Uploaded via: poetry/1.8.2 CPython/3.11.9 Linux/6.5.0-1018-azure

File hashes

Hashes for django_guid-3.5.0-py3-none-any.whl
Algorithm Hash digest
SHA256 28f52cfeac47e8e22ea889a3845bc2b1c604dd842e495dadd44ad5184db72c76
MD5 6f22b84fbef914b49c5907a7aa8b5c4b
BLAKE2b-256 8c342a8c3635e096ddc311c264a8aa34afb7df7118b872dfc06b56b22ea476e5

See more details on using hashes here.

Supported by

AWS AWS Cloud computing and Security Sponsor Datadog Datadog Monitoring Fastly Fastly CDN Google Google Download Analytics Pingdom Pingdom Monitoring Sentry Sentry Error logging StatusPage StatusPage Status page