wsgi.py

#!/usr/bin/env python3

"""This file represents a WSGI interaface of the API. It creates a
separate application for each parliament and incoming requests are
dispatched to the respective application by a middleware based on path
in the URL.
"""

import sys
import os.path
import json
from werkzeug.wsgi import get_path_info
from werkzeug.exceptions import NotFound

# Extend the path to find our imported modules.
sys.path.insert(0, os.path.dirname(__file__))
from run import create_app

class PathDispatcher(object):
    """Middleware routing from the URLs to individual applications
    respective to the parliament.
    """
    def __init__(self):
        """Creates application instances for all parliaments."""
        self.instances = {}
#        with open(os.path.join(os.path.dirname(__file__), 'parliaments.json'), 'r') as f:
#            parliaments = json.load(f)
#        for parl, conf in parliaments.items():
#            self.instances[parl] = create_app(parl, conf)
        self.instances['ovolby'] = create_app({})

    def __call__(self, environ, start_response):
        """Returns application instance respective to the parliament in
        the URL.
        """
        app = NotFound()
#        segments = get_path_info(environ).lstrip('/').split('/', 2)
#        if len(segments) >= 2:
#            parl = segments[0] + '/' + segments[1]
#            if parl in self.instances:
#                app = self.instances[parl]
        app = self.instances['ovolby']
        return app(environ, start_response)

application = PathDispatcher()