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Impossible to use my class in an Azure function

I have a problem with my Python function app.

I admit I don’t try a lot of things but I just don’t understand why it’s not working.
Both the class and the function exist in ‘Script1.py’.

In this Microsoft doc, it’s said I need to use absolute import and create a ”’init.py”’ file. I tried to import like this :

from shared.Script1 import class1

and like this :

from shared import Script1

Both of them do not work. And if I don’t import my files in a try/except block, I get the worst message ‘No HTTP triggers found’.

My project :

|- function_app.py
|- host.json
|- local.settings.json
|- requirements.txt
|- shared
||- __init__.py
||- Script1.py
||- Script2.py

function_app.py :

import azure.functions as func
import logging
try:
    from shared.Script1 import class1
except ImportError as e:
    logging.error(f"Erreur d'importation : {e}")

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

@app.function_name(name="httpTrigger1")
@app.route(route="route")
def route(req: func.HttpRequest) -> func.HttpResponse:
    caller = req.params.get('caller')
    accessPath = req.params.get('accessPath')
    code, response = class1.function1(accessPath, caller)
    return func.HttpResponse(body=response, status_code=code)

Logs Azure function :

Result: Failure Exception: NameError: name 'class1' is not defined
Tags:

2

Answers


  1. Chosen as BEST ANSWER
    0

    I found my problem and it was not what I expected. One parameter from 'host.json' needed to be changed.

    Initial 'host.json' version :

    {
  "version": "2.0",
  "logging": {
    "applicationInsights": {
      "samplingSettings": {
        "isEnabled": true,
        "excludedTypes": "Request"
      }
    }
  },
  "extensionBundle": {
    "id": "Microsoft.Azure.Functions.ExtensionBundle",
    "version": "[3.*, 4.0.0)"
  }
}

    Thanks to @Ikhtesam, I tried to create a new functions app and I discovered the difference with a brand new 'host.json' file with a different construction :

    New 'host.json' version :

    {
  "version": "2.0",
  "logging": {
    "applicationInsights": {
      "samplingSettings": {
        "isEnabled": true,
        "excludedTypes": "Request"
      }
    }
  },
  "extensionBundle": {
    "id": "Microsoft.Azure.Functions.ExtensionBundle",
    "version": "[4.*, 5.0.0)"
  }
}

  2. 0

    I have the below folder structure and following codes in the respective files.

    enter image description here

    function_app.py–

    import azure.functions as func
import logging
try:
    from shared.script1 import class1
except ImportError as e:
    logging.error(f"Error : {e}")

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

@app.route(route="http_trigger")
def http_trigger(req: func.HttpRequest) -> func.HttpResponse:
    caller = req.params.get('caller')
    accessPath = req.params.get('accessPath')
    response = class1.function1(accessPath, caller)
    return func.HttpResponse(body=response)

    script1.py–

    class class1:
    @staticmethod
    def function1(access_path, caller):
        # Implement your logic here
        if access_path == "12" and caller == "13":
            return "Access granted for caller1 to path1"
        else:
            return "Access denied"

    Then I executed my function by clicking fn + f5 or func host start and got the expected response.

    enter image description here

    enter image description here

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