Azure Function error on Data Factory , 3608 Error - Call to provided Azure function 'testhttpmohsen' failed with status-'NotFound' and message - 'Invoking Azure function failed with HttpStatusCode - NotFound.'

Question

I have an Azure function (HTTP Trigger) and run correctly. When I add this function to Azure Data Factory and run Debug, I received this error.

my code is:

import logging  
  
import azure.functions as func  
  
  
def main(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  
        )  

Answer 1

Just a note for anyone else encountering this problem after following the quickstart guide for Python V2 Quickstart: Create a function in Azure with Python using Visual Studio Code and then trying to use that demo function in an ADF pipeline:

The V2 demo code provided includes some decorators above the function def

app = func.FunctionApp()
@app.function_name(name="HttpTrigger1")
@app.route(route="hello", auth_level=func.AuthLevel.ANONYMOUS)

The app route decorator sets the URL of the function to use the specified route name, instead of the function name (default), so when you deploy the function, the URL will be https://your_function_app.azurewebsites.net/api/hello

When adding an Azure Function activity to an ADF pipeline, you must specify the name used in the route arg (in this case "hello") of app.route() as the function name in order for ADF to correctly locate the function. If you use the name of your function as it appears in Azure (assuming that differs from the route arg), ADF will return the error "Invoking Azure function failed with HttpStatusCode - NotFound."

Answer 2

Hi @Mohsen Akhavan

I have looked into the backend logs and I can see that your function app is in the "Stopped" state. Please start your function app by navigating to your function app. The error is expected if there is no function found with the request URL.

Once you see the status as "Running" please test it and let me know if you are still facing the issue.