import falcon
import json

REGISTER = {}

class Handler:
    def on_get(self, req, resp, key):
        """Handles GET requests"""
        resp.status = falcon.HTTP_200
        resp.body = REGISTER.get(key, "") # json.dumps({"value": }, encoding='utf-8')

    def on_post(self, req, resp, key):
        try:
            value = req.stream.read()
        except Exception as ex:
            raise falcon.HTTPError(falcon.HTTP_400,
                'Error',
                ex.message)

        REGISTER[key] = value

        resp.status = falcon.HTTP_201
        resp.body = json.dumps({"success": True}, encoding='utf-8')

api = falcon.API()
api.add_route('/{key}', Handler())