👀 Views: 74 💬 Answers: 1 📅 Created: 2025-08-06

gcp pubsub asyncio python Python

I'm experiencing an scenario where messages published to Google Cloud Pub/Sub are not being acknowledged when processed asynchronously in my Python application using the `google-cloud-pubsub` library (version 2.10.0). The setup works fine when processing synchronously, but when I switch to an asynchronous approach with `asyncio`, the messages seem to get exploring in an unacknowledged state. Here’s a snippet of the code I'm using: ```python import asyncio from google.cloud import pubsub_v1 async def callback(message): print(f'Received message: {message.data}') await asyncio.sleep(1) # Simulate some processing time message.ack() # Acknowledge the message async def listen_for_messages(subscription_name): subscriber = pubsub_v1.SubscribeAsyncClient() streaming_pull_future = subscriber.subscribe(subscription_name, callback=callback) print(f'Listening for messages on {subscription_name}...') try: await streaming_pull_future.result() except Exception as e: print(f'Listening failed: {e}') async def main(): subscription_name = 'projects/my-project/subscriptions/my-subscription' await listen_for_messages(subscription_name) if __name__ == '__main__': asyncio.run(main()) ``` When I run this code, I see the messages being printed, but they never seem to get acknowledged. In the Google Cloud Console, I notice that the message delivery attempts keep increasing, but the acknowledgment count remains at zero. I've also tried adding explicit behavior handling, and I checked that the subscription has acknowledgment deadlines set appropriately. Could it be that the asynchronous nature of my code is interfering with the acknowledgment process, or are there specific configurations I might be missing? Any insights on how to resolve this scenario would be greatly appreciated. I'm working on a service that needs to handle this. Any help would be greatly appreciated!