#####################################
openkongqi - outdoor air quality data
#####################################
.. image:: https://travis-ci.org/gams/openkongqi.svg?branch=master
:target: https://travis-ci.org/gams/openkongqi
:alt: Testing Status
Fetch outdoor air quality data from multiple resources, the system is made of
the following components:
* fetching: fetches resources to create the raw material for air
quality data. That material is saved to create a history and possibility to
fix errors after the fact.
* data extraction: extract the data from the raw material to create data feeds.
* data reliability: determine which data source is the most reliable at any
given time.
Architecture
============
The data flow from online resource to reliable data point is broken down as
follow:
* sources: online resources that provide the data, polled at regular interval
and cached for archive purpose
* feeds: extracted data from sources, feeds are saved as time series in a
database
* datapoint: extracted from feeds using an election algorithm to provide the
most reliable data
Configuration
=============
The default local configuration file is ``okqconfig.py``, this can be changed
using the environment variable ``OKQ_CONFMODULE``. The ``okqconfig.py`` file
should define a dict called ``settings``, this dict can be used to overwrite
any configuration option defined in the ``global_settings`` of
``openkongqi.conf``.
Station UUID
============
Each station needs to be attached to a unique identier, a station identifier is
of the following formats::
CC/STATION
CC/CITY/STATION
CC/STATE/CITY/STATION
The following fragments compose the UUID:
* ``CC``: country code - a two letter country code as defined by ISO 3166-1
alpha-2, mandatory.
* ``STATE``: state name - state name
* ``CITY``: city name - city name
* ``STATION``: stations name - station name, mandatory.
All names have to be expressed in Uppercase or lowercase or numeric latin letters.
Install
=======
Make sure the `lxml` package is installed, on debian:
.. code:: sh
$ apt-get install python-lxml
Install the code:
.. code:: sh
$ pip install -U pip
$ pip install pip-tools
$ pip-sync requirements.txt
Development
===========
Install development environment:
.. code-block:: sh
$ pip install -r requirements-dev.txt
Create necessary database & tables:
.. code-block:: sh
(openkongqi)$ python -c "import openkongqi.bin; openkongqi.bin.okq_init()"
Run celery:
.. code-block:: sh
(openkongqi)$ python openkongqi/bin.py worker --loglevel=debug --concurrency=1 --autoreload -B
Test
----
Test the package:
.. code-block:: sh
$ python -m unittest discover
Automatic testing in various environments:
.. code-block:: sh
$ tox
Versioning
----------
Openkongqi tries to follow the `PEP 440
<https://www.python.org/dev/peps/pep-0440/#public-version-identifiers>`_ /
`Semver <http://semver.org/>`_ conventions as defined by `PyPA
<https://packaging.python.org/en/latest/distributing/#choosing-a-versioning-scheme>`_
To update the version of the package, use the following command:
.. code-block:: sh
$ bumpr -b -p
Packaging
---------
Create packages:
.. code-block:: sh
$ python setup.py sdist bdist_wheel
Push package:
.. code-block:: sh
$ twine upload dist/*
$ twine upload -r pypi dist/*
Name origin
===========
Kōngqì (空气) is the Chinese word for air/atmosphere.
License
=======
This software is licensed under the Apache License 2.0. See the LICENSE file in the top distribution directory for the full license text.
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