Setup

Before you can run or deploy this sample, you will need to configure a Pub/Sub topic and subscription:

1. Enable the Cloud Pub/Sub API in the Google Developers Console.

2. Create a topic and subscription.

    $ gcloud alpha pubsub topics create [your-topic-name]
    $ gcloud alpha pubsub subscriptions create [your-subscription-name] \
        --topic [your-topic-name] \
        --push-endpoint \
            https://[your-app-id].appspot.com/pubsub/push \
        --ack-deadline 30
   

3. Update the environment variables in app.yaml.