python - How to connect Azure Function App with Event Grid - Stack Overflow

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I'm trying to connect an Azure Function app, the premium one, that have the code uploaded in a docker image, that is uplod to the container registry. When I try to make a subscription in the Event Grid Topic, and connect it to the Function App, I condigue the endpoint to the Function App, and the function that I want to trigger, but doesn't arrive to the function app. It gives me this error: "message": "outcome=NotFound

This is my Dockerfile for the function app:

FROM mcr.microsoft/azure-functions/python:4-python3.11
ENV AzureWebJobsScriptRoot=/home/site/wwwroot \
    AzureFunctionsJobHost__Logging__Console__IsEnabled=true

COPY ./src /home/site/wwwroot
COPY ./requirements.txt /home/site/wwwroot
COPY ./requirements_function_app.txt /home/site/wwwroot

RUN apt-get update
RUN apt-get install -y chromium chromium-driver
RUN apt-get clean
RUN rm -rf /var/lib/apt/lists/*

WORKDIR /home/site/wwwroot

RUN mkdir /home/site/wwwroot/process_url
RUN mv /home/site/wwwroot/azure_functions/process_url.py /home/site/wwwroot/process_url/process_url.py
RUN mv /home/site/wwwroot/azure_functions/function_process_url.json /home/site/wwwroot/process_url/function.json
RUN mkdir /home/site/wwwroot/delete_url
RUN mv /home/site/wwwroot/azure_functions/delete_url.py /home/site/wwwroot/delete_url/delete_url.py
RUN mv /home/site/wwwroot/azure_functions/function_delete_url.json /home/site/wwwroot/delete_url/function.json

RUN ls

RUN pip install --no-cache-dir -r requirements.txt
RUN pip install --no-cache-dir -r requirements_function_app.txt

And this is my azure function app:

import azure.functions as func
import logging
import json
from dotenv import load_dotenv
load_dotenv()

from utils.executor_functions import process_urls

app = func.FunctionApp(http_auth_level=func.AuthLevel.ANONYMOUS)

LOGGER = logging.getLogger()
LOGGER.setLevel(logging.DEBUG)

@app.function_name(name="process_url")
@app.event_grid_trigger(arg_name="azeventgrid")
async def process_url_fa(azeventgrid: func.EventGridEvent) -> func.HttpResponse:
    logging.info('Python HTTP trigger function processed a request.')

And this the JSON:

{
    "scriptFile": "process_url.py",
    "bindings": [
      {
        "authLevel": "anonymous",
        "type": "eventGridTrigger",
        "direction": "in",
        "name": "process_url"
      },
      {
        "type": "http",
        "direction": "out",
        "name": "$return"
      }
    ]
  }

I tried with the eventgrid endpoint that appears in Azure Portal, in the EventGrid resource

Any ideas to try?

I tried to connect it via webHook and with the function app url but doesn't work. I don't know where is the problem.

I'm trying to connect an Azure Function app, the premium one, that have the code uploaded in a docker image, that is uplod to the container registry. When I try to make a subscription in the Event Grid Topic, and connect it to the Function App, I condigue the endpoint to the Function App, and the function that I want to trigger, but doesn't arrive to the function app. It gives me this error: "message": "outcome=NotFound

This is my Dockerfile for the function app:

FROM mcr.microsoft/azure-functions/python:4-python3.11
ENV AzureWebJobsScriptRoot=/home/site/wwwroot \
    AzureFunctionsJobHost__Logging__Console__IsEnabled=true

COPY ./src /home/site/wwwroot
COPY ./requirements.txt /home/site/wwwroot
COPY ./requirements_function_app.txt /home/site/wwwroot

RUN apt-get update
RUN apt-get install -y chromium chromium-driver
RUN apt-get clean
RUN rm -rf /var/lib/apt/lists/*

WORKDIR /home/site/wwwroot

RUN mkdir /home/site/wwwroot/process_url
RUN mv /home/site/wwwroot/azure_functions/process_url.py /home/site/wwwroot/process_url/process_url.py
RUN mv /home/site/wwwroot/azure_functions/function_process_url.json /home/site/wwwroot/process_url/function.json
RUN mkdir /home/site/wwwroot/delete_url
RUN mv /home/site/wwwroot/azure_functions/delete_url.py /home/site/wwwroot/delete_url/delete_url.py
RUN mv /home/site/wwwroot/azure_functions/function_delete_url.json /home/site/wwwroot/delete_url/function.json

RUN ls

RUN pip install --no-cache-dir -r requirements.txt
RUN pip install --no-cache-dir -r requirements_function_app.txt

And this is my azure function app:

import azure.functions as func
import logging
import json
from dotenv import load_dotenv
load_dotenv()

from utils.executor_functions import process_urls

app = func.FunctionApp(http_auth_level=func.AuthLevel.ANONYMOUS)

LOGGER = logging.getLogger()
LOGGER.setLevel(logging.DEBUG)

@app.function_name(name="process_url")
@app.event_grid_trigger(arg_name="azeventgrid")
async def process_url_fa(azeventgrid: func.EventGridEvent) -> func.HttpResponse:
    logging.info('Python HTTP trigger function processed a request.')

And this the JSON:

{
    "scriptFile": "process_url.py",
    "bindings": [
      {
        "authLevel": "anonymous",
        "type": "eventGridTrigger",
        "direction": "in",
        "name": "process_url"
      },
      {
        "type": "http",
        "direction": "out",
        "name": "$return"
      }
    ]
  }

I tried with the eventgrid endpoint that appears in Azure Portal, in the EventGrid resource

Any ideas to try?

I tried to connect it via webHook and with the function app url but doesn't work. I don't know where is the problem.

• python
• azure
• docker
• azure-functions
• azure-eventgrid

Share Improve this question Follow edited Mar 24 at 8:24 Jucas22 asked Mar 21 at 13:20 Jucas22Jucas22 111 bronze badge 3

• Welcome to SO. Provide more details on what you have tried so far, give more details similar to this question – Anand Sowmithiran Commented Mar 21 at 13:57
• @Jucas22 could you please provide your Your Dockerfile, function signature, exact Event Grid endpoint URL you're using (without the key). – Sirra Sneha Commented Mar 24 at 5:21
• I edited the question with more information – Jucas22 Commented Mar 24 at 8:24

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1 Answer 1

Sorted by: Reset to default 0

To connect Azure Function App with Event Grid perform below mentioned steps:

• For creating the Event Grid subscription, use the below given link format:

https://<function-app-name>.azurewebsites/runtime/webhooks/EventGrid?functionName=<function-name>&code=<function-key>

• Try to use Azure CLI to create subscription (optional): -

az eventgrid event-subscription create name process-url-subscription source-resource-id /subscriptions/<sub-id>/resourceGroups/<rg>/providers/Microsoft.EventGrid/topics/<your-topic> endpoint https://<function-app-name>.azurewebsites/runtime/webhooks/EventGrid?functionName=process_url&code=<function-key>

• Update your azure function app with this: -

import azure.functions as func
import logging
from dotenv import load_dotenv
load_dotenv()
from utils.executor_functions import process_urls

app = func.FunctionApp(http_auth_level=func.AuthLevel.ANONYMOUS)
@app.function_name(name="process_url")
@app.event_grid_trigger(arg_name="azeventgrid")

async def  process_url_fa(azeventgrid: func.EventGridEvent) -> func.HttpResponse:
logging.info('Python HTTP trigger function processed a request.')
return func.HttpResponse("Processed Event Grid event!",  status_code=200)

• update your Function. json file with this: -

"bindings": [
  {
    "type": "eventGridTrigger",
    "direction": "in",
    "name": "azeventgrid"
  },
  {
    "type": "http",
    "direction": "out",
    "name": "$return"
  }
]

• In reference to this, you can also check the Microsoft documentation that I've attached:

docs1, docs2

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