This code sample creates a simple Google Chat app that listens for messages via Cloud Pub/Sub.

Before you can run the sample, do the following:

1. Follow the directions for setting up a topic and subscription as described in Using Cloud Pub/Sub as an endpoint for your app.
2. Start a virtual environment

   python -m venv env
   source env/bin/activate
   

3. Install libraries using pip.

   pip install -r requirements.txt -U
   

4. Run the sample, substituing your subscription id and service account JSON file from step 1. SUBSCRIPTION_ID=your-subscription-id GOOGLE_APPLICATION_CREDENTIALS=your-service-account.json python app.py

Either add and @mention the app in a room or in a direct mention to engage with the app.

When added to a room or messaged, the app will respond with a simple reply.