Ticket #559: test.py

import cherrypy

# my middleware
class ChangeCase(object):
    def __init__(self, app, to=None):
        self.app = app
        self.to = to

    def __call__(self, environ, start_response):
        response_iter = self.app(environ, start_response)
        response_string = ''.join(response_iter)
        if self.to == "upper":
            return [response_string.upper()]
        elif self.to == "lower":
            return [response_string.lower()]
        else:
            return [response_string]

# register my middleware
cherrypy.wsgi.changecase = cherrypy.WSGIMiddleware(ChangeCase)

# my application
class Root(object):
    def index(self):
        return "HeLlO WoRlD!"
    index.exposed = True

global_conf = {
    'log.screen': True,
}

# configure the middleware_pipeline and middleware options 
# for my application
root_conf = {
    '/': {
        'wsgi.middleware_pipeline': ['changecase'],
        'wsgi.changecase.to': 'upper',
    }
}

cherrypy.config.update(global_conf)
cherrypy.quickstart(Root(), script_name='/', conf=root_conf)