django-logging-json 1.2

A simple Django app to log requests/responses in various formats, such as JSON.

Django Logging
==============

A Django library that logs request, response and exception details in a JSON document.
It uses the python rotation mechanism to rotate the file logs, but the rotation files will be gziped.



Installation
============

.. code-block:: python

pip install git+https://github.com/cipriantarta/django-logging

or

.. code-block:: python

pip install django-logging-json

Quick start
===========
1. Add "django_logging" to your INSTALLED_APPS settings like this:

.. code-block:: python

INSTALLED_APPS = (
...
'django_logging',
)


2. Include the DjangoLoggingMiddleware middleware in your MIDDLEWARE_CLASSES like this:

.. code-block:: python

MIDDLEWARE_CLASSES = (
'django_logging.middleware.DjangoLoggingMiddleware',
...
)

Handlers
========

AppFileHandler
--------------

This handle will log request/response info to ``LOG_PATH/app.log``. It will also log request/exception, for unhandled exceptions, in the same file.
Log format:

Request and Response

.. code-block:: javascript

{
"INFO":
{
"timestamp":
{
"request": {
... request info ...
},
"response": {
... response info ...
}
}
}
}

Request and Exception

.. code-block:: javascript

{
"ERROR":
{
"timestamp":
{
"request": {
... request info ...
},
"exception": {
"message": "Exception message",
"traceback": [
...
]
}
}
}
}

SQLFileHandler
--------------

This handler will log all queries to ``LOG_PATH/sql.log``.
In a production environment you should set ``LOG_LEVEL = Error`` or ``SQL_LOG = False`` to avoid performance issues.
The queries will also be logged to the console if ``CONSOLE_LOG`` is set to ``True``

DebugFileHandler
----------------

This handler will log debug messages to ``LOG_PATH/debug.log``. This handler is only used when ``settings.DEBUG`` is set to ``True``.

Log format:

.. code-block:: python

[%(levelname)s - %(created)s], file:%(module)s.py, func:%(funcName)s, ln:%(lineno)s: %(message)s


Custom Use
==========


To log debug messages:

.. code-block:: python

from django_logging import log

log.debug('debug message')

To log handled exceptions:

.. code-block:: python

from django_logging import log, ErrorLogObject

log.error(ErrorLogObject(request, exception))

Settings
========
Inspired by Django Rest Framework, Django Logging settings are grouped in a single dictionary.

To override Django Logging settings, add a dictionary in your project's settings file

.. code-block:: python

DJANGO_LOGGING = {
"CONSOLE_LOG": False
}
Default Settings
----------------

.. code-block:: python

CONSOLE_LOG = True
Log to console.

.. code-block:: python

SQL_LOG = True
Log SQL queries.

.. code-block:: python

LOG_LEVEL = 'debug'
If settings.DEBUG is set to True, otherwise LOG_LEVEL is set to 'info'

.. code-block:: python

DISABLE_EXISTING_LOGGERS = True
Set this to False if you want to combine with multiple loggers.

.. code-block:: python

LOG_PATH = '{}/logs'.format(settings.BASE_DIR)
If the logs folder does not exist, it will be created.

.. code-block:: python

IGNORED_PATHS = ['/admin', '/static', '/favicon.ico']
List of URL endpoints to ignore.

.. code-block:: python

RESPONSE_FIELDS = ('status', 'reason', 'charset', 'headers', 'content')
List of response fields to log.

.. code-block:: python

CONTENT_JSON_ONLY = True
Log response content only if its a JSON document.

.. code-block:: python

ROTATE_MB = 100
Maximum size in MB that the log file can have before it gets rotated.

.. code-block:: python

ROTATE_COUNT = 10
Maximum number of rotated log files.


Change Log
==========

1.2 [2015-11-22]
----------------
- added sql logging support
- log entries are now sorted by keys
- console handler now indents the log entries by 4 spaces
- log response content if it's JSON (bug)

1.1 [2015-11-17]
----------------
- added exception "type" for exception log entries