I’m deploying a Python application as an Azure Functions App through a zip deployment. The project structure looks like this:

src/
├── lib
├── modules
    ├── __init__.py
    └── trivy/
        ├── __init__.py
        ├── fetch_release.py
        ├── send_notification.py
        ├── main.py
        └── adaptive_card_template.json
├── __init.py__
├── .funcignore
├── function_app.py
├── host.json
├── requirements.txt
└── local.settings.json
pyproject.toml
poetry.lock

where I only zip the src folder as it is the root of the Functions project.

The problem I am facing is that after running the following az command:

az functionapp deployment source config-zip --src ./dist/dependency-webhook-api.zip --resource-group ${AZURE_APP_RG} --name ${AZURE_APP_NAME} --subscription ${AZURE_APP_SUBSCRIPTION} --timeout 180

The result indicates that the operation is a success, however the Function app does not display any functions on its GUI:

| It has to be noted that I successfully ran the application locally using func start

These are the most important files:

function_app.py

# The function_app.py file is the main Azure functions initializer,
# here the app object gets created, and other functions,
# get registered to it.

import azure.functions as func

# Imports of azure functions from modules:
from modules.trivy.main import trivy_module

# Init the azure functions app
app = func.FunctionApp()

# Register azure functions from modules
app.register_functions(trivy_module)

host.json

{
  "version": "2.0",
  "logging": {
    "logLevel": {
      "default": "Warning",
      "Host.Aggregator": "Trace",
      "Host.Results": "Information",
      "Function": "Information"
    },
    "applicationInsights": {
      "samplingSettings": {
        "isEnabled": true,
        "excludedTypes": "Request"
      }
    }
  },
  "extensionBundle": {
    "id": "Microsoft.Azure.Functions.ExtensionBundle",
    "version": "[4.*, 5.0.0)"
  }
}

modules/trivy/main.py

import azure.functions as func
import logging

from lib.utils import ReleaseMode, newer_version_available

from .fetch_release import fetch_release_data
from .send_notification import send_notification

trivy_module = func.Blueprint()


@trivy_module.function_name(name="trivy_module")
@trivy_module.timer_trigger(
    schedule="0 12 * * 1", arg_name="timer", run_on_startup=True
)
def main(timer: func.TimerRequest):
    logging.info("Trivy module triggered.")
    response = fetch_release_data()
    logging.info("Trivy release data fetched.")
    if newer_version_available(ReleaseMode.MINOR_MODE, "v0.48.0", response["tag_name"]):
        send_notification(response)
        logging.info("Trivy notification update sent.")

If I run the az functionapp with the --build-remote true parameter, this is the output:

If anyone has any idea how I can debug this deployment to see any type of error or why the application won’t start as needed, your help would be much appreciated!