gcloud-aio-pubsub

import asyncio import json import os from aiohttp import ClientSession from gcloud.aio.pubsub import Publisher, Subscriber async def main(): # Ensure GCP_PROJECT and GCP_CREDENTIALS are set as environment variables. # For local testing, GCP_CREDENTIALS should be the JSON key file content. # Example: export GCP_CREDENTIALS=$(cat /path/to/keyfile.json) project = os.environ.get('GCP_PROJECT', '') if not project: print("Error: GCP_PROJECT environment variable not set.") return topic_name = 'my-test-topic' # Replace with an existing topic subscription_name = 'my-test-subscription' # Replace with an existing subscription async with ClientSession() as session: # --- Publisher Example --- publisher = Publisher(session=session, project=project) data = {'message': 'Hello, gcloud-aio-pubsub!'} message_id = await publisher.publish(topic_name, [data]) print(f"Published message to '{topic_name}' with ID: {message_id}") # --- Subscriber Example --- subscriber = Subscriber(session=session, project=project) print(f"Listening for messages on '{subscription_name}'...") try: # Fetch up to 1 message for this example async for message in subscriber.subscribe(subscription_name, max_messages=1): print(f"Received message: {message.data.decode('utf-8')}") await message.ack() print("Message acknowledged.") break # Exit after first message for this quickstart except Exception as e: print(f"Error during subscription: {e}") if __name__ == '__main__': asyncio.run(main())