Python Azure Function run on startup despite run_on_startup=False

Question

Hi,

I run my Azure Function inside the docker container deployed on my local computer. I've noticed every time the container is up and running and Azure Function is started my function is triggered immediately. I've added run_on_startup=False to the blob trigger decorator but it doesn't work - my function still gets triggered.

Here's my function:

import logging

import azure.functions as func
import azurefunctions.extensions.bindings.blob as blob

app = func.FunctionApp()

@app.blob_trigger(arg_name="client",
                  path="blobclient/{name}.csv",
                  connection="BlobStorageConnectionString",
                  run_on_startup=False
                  )
def function(client: blob.BlobClient):
    logging.info(
        f"Python blob trigger function processed blob \n"
        f"Properties: {client.get_blob_properties()}\n"
    )

Is there anything I'm missing?
Another question - what is the default value of this setting?

Thanks a lot, Maria

Answer 1

Consider using an Event Grid trigger instead of a blob trigger. Event Grid can provide more control over when the function is triggered based on specific events:

@app.event_grid_trigger(arg_name="event",

                    connection="EventGridConnectionString")

def function(event: func.EventGridEvent):

logging.info(

    f"Python Event Grid trigger function processed event \n"

    f"Event: {event.get_json()}\n"

)