Simple script wheezy.web with content negotiation skeleton

wheezy_web.py

from __future__ import unicode_literals
import json
from wheezy.http import WSGIApplication, HTTPResponse
from wheezy.routing import url
from wheezy.web.handlers import BaseHandler
from wheezy.web.middleware import bootstrap_defaults, path_routing_middleware_factory
from wsgiref.simple_server import make_server


class ResourceHandler(BaseHandler):
    def absolute_url_for(self, name, **kwargs):
        absolute_url = super(ResourceHandler, self).absolute_url_for(name, **kwargs)
        return absolute_url.encode('utf-8')

    def negotiate_response(self, obj):
        response = obj
        if not isinstance(obj, HTTPResponse):
            json_str = json.dumps(obj)
            callback = self.request.query.get('callback')
            if callback:
                json_str = '{0}({1});'.format(callback, json_str)
            response = HTTPResponse()
            response.write(json_str)
        return response


class IndexHandler(ResourceHandler):
    def get(self):
        return self.redirect_for('hello')


class HelloHandler(ResourceHandler):
    def get(self):
        # FIXME this does not looks nice
        return self.negotiate_response(dict(message='Hello World!'))


all_urls = [
    url('', IndexHandler, name='default'),
    url('hello/world', HelloHandler, name='hello')
]


if __name__ == '__main__':
    options = {}
    app = WSGIApplication(
        middleware=[
            bootstrap_defaults(url_mapping=all_urls),
            path_routing_middleware_factory
        ],
        options=options)
    try:
        print('Running on http://localhost:8080/')
        make_server('', 8080, app).serve_forever()
    except KeyboardInterrupt:
        pass