plaster_pastedeploy is a plaster plugin that provides a plaster.Loader that can parse ini files according to the standard set by PasteDeploy. It supports the wsgi plaster protocol, implementing the plaster.protocols.IWSGIProtocol interface.
Applications should use plaster_pastedeploy to load settings from named sections in a configuration source (usually a file).
- Please look at the documentation for plaster on how to integrate this loader into your application.
- Please look at the documentation for PasteDeploy on the specifics of the supported INI file format.
Most applications will want to use plaster.get_loader(uri, protocols=['wsgi']) to get this loader. It then exposes get_wsgi_app, get_wsgi_app_settings, get_wsgi_filter and get_wsgi_server.
import plaster
loader = plaster.get_loader('development.ini', protocols=['wsgi'])
# to get any section out of the config file
settings = loader.get_settings('app:main')
# to get settings for a WSGI app
app_config = loader.get_wsgi_app_settings() # defaults to main
# to get an actual WSGI app
app = loader.get_wsgi_app() # defaults to main
# to get a filter and compose it with an app
filter = loader.get_wsgi_filter('filt')
app = filter(app)
# to get a WSGI server
server = loader.get_wsgi_server() # defaults to main
# to start the WSGI server
server(app)Any plaster.PlasterURL options are forwarded as defaults to the loader. Some examples are below:
development.ini#myappdevelopment.ini?http_port=8080#mainpastedeploy+ini:///path/to/development.inipastedeploy+ini://development.ini#fooegg:MyApp?debug=false#foo
This feature is not supported on Python 2.
This binding extends pastedeploy to inject environ variables as defaults which are available to use in the INI file. Each os.environ key is prefixed with ENV_ and added as a default.
For example:
[app:main]
debug = %(ENV_APP_DEBUG)sThe only thing to be aware of here is that there is no fallback. The INI file will fail to parse if the environment variable is not set. The app may be run like so:
$ APP_DEBUG=true env/bin/pserve development.ini