flask-appfactory-example
An example of a customizable app factory for flask, depending on environment variables. This example is losely similar to http://flask.pocoo.org/docs/1.0/patterns/appfactories/.
The main gist of this example is that we start the flask app using gunicorn as follows:
gunicorn "main:auto_app()"Using auto_app(), we are able to set up different configurations of a flask app object.
To use the same routing implementations, we make use of Flask Blueprints
(see views.py).
For example, we could start the server with debug settings or a different cache implementation.
In this concrete implementation, when starting up gunicorn with an environment variable RWCACHE,
we can use <yourserver>/write/<key>/<value> to save {key: value} in the app's cache:
RWCACHE=1 gunicorn "main:auto_app()" When ommitting RWCACHE, the cache is ready-only.
While this is obviously an example without a real use case, it perfectly depicts how to use
different app configurations.