Azure Function Python V2 multiple function in one Function App

Question

I'm looking for guidance on creating a project structure for multiple functions in one Azure Function App. This is the post I read before Create multiple functions in one Azure Function App

There are two things I can't seem to find a good answer:

1. Use Visual Studio Code to deploy multiple functions.
2. From the link above, it seems that I have to create a new function first, but the func azure functionapp publish <App Name> is used to publish app to an existing function.

I tried to deploy using VSCode, and it ended up overwriting to another function.

Answer 1

In order to deploy multiple functions at once you need to execute func init --worker-runtime python --model V2 command once which will create all the default files needed for a function. Then you can run func new command many times if you would like to add different trigger functions in it.

If you will run func new thrice for creating one HTTP triggered function and 2 timer trigger function then the folder structure and function_app.py would look like below-

Folder Structure-

function_app.py-

import azure.functions as func
import datetime
import json
import logging

app = func.FunctionApp()

@app.timer_trigger(schedule="0 */5 * * * *", arg_name="myTimer", run_on_startup=True,
              use_monitor=False) 
def TimerTriggerFunction(myTimer: func.TimerRequest) -> None:
    
    if myTimer.past_due:
        logging.info('The timer is past due!')

    logging.info('Python timer trigger function executed.')

@app.route(route="HttpTriggeredFunction", auth_level=func.AuthLevel.ANONYMOUS)
def HttpTriggeredFunction(req: func.HttpRequest) -> func.HttpResponse:
    logging.info('Python HTTP trigger function processed a request.')

    name = req.params.get('name')
    if not name:
        try:
            req_body = req.get_json()
        except ValueError:
            pass
        else:
            name = req_body.get('name')

    if name:
        return func.HttpResponse(f"Hello, {name}. This HTTP triggered function executed successfully.")
    else:
        return func.HttpResponse(
             "This HTTP triggered function executed successfully. Pass a name in the query string or in the request body for a personalized response.",
             status_code=200
        )

@app.timer_trigger(schedule="0 0 0/1 * * *", arg_name="myTimer", run_on_startup=True,
              use_monitor=False) 
def TimerTriggeredFunction2(myTimer: func.TimerRequest) -> None:
    
    if myTimer.past_due:
        logging.info('The timer is past due!')

    logging.info('Python timer trigger function executed.')

You can either deploy using func azure functionapp publish <function_APP_Name> command or vs code.

Portal-

Answer 2

This works well, additionally You could store additional downstream logic in monorepo folder structure.

Then load each via __init__.py

What is __init__.py for?