Azure use python flask framework for function app

Question

I saw that Azure now supports Python (preview) in the function apps. I have a existing Flask app and was wondering if it\'s possible to deploy that one as a function app without

Answer 1

I tried different ways to integrate Azure Functions for Python with Flask framework. Finally, I did it success in my HttpTrigger function named TryFlask via app.test_client().

Here is my sample code, as below.

import logging
import azure.functions as func
from flask import Flask, request

app = Flask(__name__)

@app.route('/')
def hello_world():
    return 'Hello World!'

@app.route('/hi')
def hi():
    return 'Hi World!'

@app.route('/hello')
@app.route('/hello/', methods=['POST', 'GET'])
def hello(name=None):
    return name != None and 'Hello, '+name or 'Hello, '+request.args.get('name')

def main(req: func.HttpRequest) -> func.HttpResponse:
    logging.info('Python HTTP trigger function processed a request.')
    uri=req.params['uri']
    with app.test_client() as c:
        doAction = {
            "GET": c.get(uri).data,
            "POST": c.post(uri).data
        }
        resp = doAction.get(req.method).decode()
        return func.HttpResponse(resp, mimetype='text/html')

For testing on local and Azure, to access the urls /, '/hi' and /hello via the url http(s):///api/TryFlask with query string ?uri=/, ?uri=/hi and ?uri=/hello/peter-pan in browser, and to do the POST method for the same url above with query string ?uri=/hello/peter-pan, these are all work. Please see the results as the figures locally below, the same on cloud.

Note: In my solution, the url must have to be http(s):////?uri=.