Python Flask routing on Google Cloud Functions with support for flask error handlers

google_cloud_functions_routing.py

import sys
import requests
from flask import Flask, request

app = Flask(__name__)

@app.route('/', methods=["GET"])
def index():
    return "Index"

@app.route('/loko/<int:some_number>', methods=["POST"])
def loko(some_number):
    return str(some_number)

# Google handler
def handler(request):
    environ = request.environ
    environ['PATH_INFO'] = environ['PATH_INFO'].replace('/execute', '')
    urls = app.url_map.bind_to_environ(environ)
    
    try:
        endpoint, args = urls.match()
        return getattr(sys.modules[__name__], endpoint)(**args)
    except HTTPException as e:
        handler = app.error_handler_spec.get(None, {}).get(e.code, {}).get(type(e))
        if (handler): return handler(e)
        raise e

if __name__ == '__main__':
    app.run()