logging-fortified 0.1.5

Extension to Python `logging` functionality.

.. -*- mode: rst -*-

logging-fortified
-----------------

This Python project is an extension of the native Python component `logging <https://docs.python.org/3/library/logging.html>`_
providing more robust message formatting for standard and JSON logging output, and in addtion allowing for extra
content populated as dictionaries.

Important Note
^^^^^^^^^^^^^^

This Python project is a refactoring of `logging-mv-integrations <https://pypi.org/project/logging-mv-integrations/>`_
for the purpose of general usage intent.

Work In Progress
^^^^^^^^^^^^^^^^

The following still needs to be performed for this Python project:

- Unit-testing: This project will be switching over to using Python native Unit testing framework `unittest <https://docs.python.org/3/library/unittest.html>`_.
- More concise documentation is required.
- Travis CI
- Badges


Badges
------

.. start-badges

.. list-table::
:stub-columns: 1

* - docs
- |docs| |license|
* - package
- |version| |supported-versions|


.. |docs| image:: https://readthedocs.org/projects/logging-fortified/badge/?style=flat
:alt: Documentation Status
:target: http://logging-fortified.readthedocs.io

.. |hits| image:: http://hits.dwyl.io/jeff00seattle/logging-fortified.svg
:alt: Hit Count
:target: http://hits.dwyl.io/jeff00seattle/logging-fortified

.. |license| image:: https://img.shields.io/badge/License-MIT-yellow.svg
:alt: License Status
:target: https://opensource.org/licenses/MIT

.. |travis| image:: https://travis-ci.org/jeff00seattle/logging-fortified.svg?branch=master
:alt: Travis-CI Build Status
:target: https://travis-ci.org/jeff00seattle/logging-fortified

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:alt: Code Coverage Status
:target: https://coveralls.io/r/jeff00seattle/logging-fortified

.. |requires| image:: https://requires.io/github/jeff00seattle/logging-fortified/requirements.svg?branch=master
:alt: Requirements Status
:target: https://requires.io/github/jeff00seattle/logging-fortified/requirements/?branch=master

.. |version| image:: https://img.shields.io/pypi/v/logging_fortified.svg?style=flat
:alt: PyPI Package latest release
:target: https://pypi.python.org/pypi/logging_fortified

.. |supported-versions| image:: https://img.shields.io/pypi/pyversions/logging-fortified.svg?style=flat
:alt: Supported versions
:target: https://pypi.python.org/pypi/logging-fortified

.. end-badges


Install
-------

.. code-block:: bash

pip install logging_fortified


Architecture
------------

``logging-fortified`` is an extension of the `logging facility for Python <https://docs.python.org/3/library/logging.html>`_
used for providing custom logger levels, format, and output.

.. image:: ./images/logging_fortified.png
:scale: 50 %
:alt: UML logging-fortified


Function: get_logger()
----------------------

.. code-block:: python

def get_logger(
logger_name,
logger_version=None,
logger_level=logging.INFO,
logger_format=LoggingFormat.JSON,
logger_output=LoggingOutput.STDOUT_COLOR,
logger_handler=None
):


get_logger(): Parameters
^^^^^^^^^^^^^^^^^^^^^^^^

+-----------------+-------------------------------------------------------------------------------------------------------------------------+
| Parameter | Purpose |
+=================+=========================================================================================================================+
| logger_name | Return a logger with the specified name or, if name is None, return a logger which is the root logger of the hierarchy. |
+-----------------+-------------------------------------------------------------------------------------------------------------------------+
| logger_version | |
+-----------------+-------------------------------------------------------------------------------------------------------------------------+
| logger_format | LoggingFormat |
+-----------------+-------------------------------------------------------------------------------------------------------------------------+
| logger_output | LoggingOutput |
+-----------------+-------------------------------------------------------------------------------------------------------------------------+
| logger_handler | logging.StreamHandler() or logging.FileHandler() |
+-----------------+-------------------------------------------------------------------------------------------------------------------------+



Logging Levels
^^^^^^^^^^^^^^

Same Python logging levels, including one additional level NOTE.

+------------+------------------------------------------------------------------------------------------------------------------------------------------------+
| Level | Purpose |
+============+================================================================================================================================================+
| DEBUG | Detailed information, typically of interest only when diagnosing problems. |
+------------+------------------------------------------------------------------------------------------------------------------------------------------------+
| NOTE | Detailed information, request processing, for example, request using cURL. |
+------------+------------------------------------------------------------------------------------------------------------------------------------------------+
| INFO | Confirmation that things are working as expected. *[DEFAULT]* |
+------------+------------------------------------------------------------------------------------------------------------------------------------------------+
| WARNING | An indication that something unexpected happened, or indicative of some problem in the near future. The software is still working as expected. |
+------------+------------------------------------------------------------------------------------------------------------------------------------------------+
| ERROR | Due to a more serious problem, the software has not been able to perform some function. |
+------------+------------------------------------------------------------------------------------------------------------------------------------------------+
| CRITICAL | A serious error, indicating that the program itself may be unable to continue running. |
+------------+------------------------------------------------------------------------------------------------------------------------------------------------+



Logging Format
^^^^^^^^^^^^^^

+------------+-------------------------------------------------------------------------------------------------------+
| Format | Purpose |
+============+=======================================================================================================+
| STANDARD | Standard logging format. |
+------------+-------------------------------------------------------------------------------------------------------+
| JSON | JSON logging format. *[DEFAULT]* |
+------------+-------------------------------------------------------------------------------------------------------+


.. code-block:: python

class LoggingFormat(object):
"""TUNE Logging Format ENUM
"""
STANDARD = "standard"
JSON = "json"



Logging Output
^^^^^^^^^^^^^^

+--------------+----------------------------------------------------------------------------------------------+
| Output | Purpose |
+==============+==============================================================================================+
| STDOUT | Standard Output to terminal |
+--------------+----------------------------------------------------------------------------------------------+
| STDOUT_COLOR | Standard Output using colored terminal |
+--------------+----------------------------------------------------------------------------------------------+
| FILE | Standard Output to file created within *./tmp/log_<epoch time seconds>.json*. |
+--------------+----------------------------------------------------------------------------------------------+


.. code-block:: python

class LoggingOutput(object):
"""Logging Format ENUM
"""
STDOUT = "stdout"
STDOUT_COLOR = "color"
FILE = "file"


Logging JSON Format
^^^^^^^^^^^^^^^^^^^

.. code-block:: python

import logging
from logging_fortified import (LoggingFormat, get_logger, __version__)

log = get_logger(
logger_name=__name__,
logger_version=__version__,
logger_format=LoggingFormat.JSON,
logger_level=logging.NOTE
)

log.info("logging: info", extra={'test': __name__})
log.note("logging: note", extra={'test': __name__})
log.debug("logging: debug", extra={'test': __name__})
log.warning("logging: warning", extra={'test': __name__})
log.error("logging: error", extra={'test': __name__})
log.critical("logging: critical", extra={'test': __name__})
log.exception("logging: exception", extra={'test': __name__})


Logging JSON Example Output
^^^^^^^^^^^^^^^^^^^^^^^^^^^

.. code-block:: bash

$ python3 examples/example_logging_json.py

{"asctime": "2018-05-11 05:41:39 -0700", "levelname": "INFO", "name": "__main__",
"version": "0.1.6", "message": "logging: info", "test": "__main__"}
{"asctime": "2018-05-11 05:41:39 -0700", "levelname": "NOTE", "name": "__main__",
"version": "0.1.6", "message": "logging: note", "test": "__main__"}
{"asctime": "2018-05-11 05:41:39 -0700", "levelname": "WARNING", "name": "__main__",
"version": "0.1.6", "message": "logging: warning", "test": "__main__"}
{"asctime": "2018-05-11 05:41:39 -0700", "levelname": "ERROR", "name": "__main__",
"version": "0.1.6", "message": "logging: error", "test": "__main__"}
{"asctime": "2018-05-11 05:41:39 -0700", "levelname": "CRITICAL", "name": "__main__",
"version": "0.1.6", "message": "logging: critical", "test": "__main__"}
{"asctime": "2018-05-11 05:41:39 -0700", "levelname": "ERROR", "name": "__main__",
"version": "0.1.6", "message": "logging: exception", "exc_info": "NoneType: None",
"test": "__main__"}


Requirements
------------

``logging-fortified`` module is built upon Python 3 and has dependencies upon
several Python modules available within `Python Package Index PyPI <https://pypi.python.org/pypi>`_.

.. code-block:: bash

make install-requirements

or


.. code-block:: bash

python3 -m pip uninstall --yes --no-input -r requirements.txt
python3 -m pip install --upgrade -r requirements.txt


Dependencies
^^^^^^^^^^^^

- coloredlogs: https://pypi.python.org/pypi/coloredlogs
- pprintpp: https://pypi.python.org/pypi/pprintpp
- python-json-logger: https://pypi.python.org/pypi/python-json-logger
- Pygments: https://pypi.python.org/pypi/Pygments
- safe-cast: https://pypi.python.org/pypi/safe-cast
- wheel: https://pypi.python.org/pypi/wheel