Python Google Cloud Pub/Sub for Google App Engine Flexible Environment

Setup

Before you can run or deploy the sample, you will need to do the following:

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

2. Create a topic and subscription.

    $ gcloud pubsub topics create topic_tfrecord
    $ gcloud pubsub subscriptions create sub_tfrecord \
        --topic topic_tfrecord \
        --push-endpoint \
            https://[your-app-id].appspot.com/pubsub/push?token=[your-token] \
        --ack-deadline 30
   

3. Update the environment variables in app.yaml.

Running locally

Install dependencies, preferably with a virtualenv:

virtualenv env
source env/bin/activate
pip install -r requirements.txt

Then set environment variables before starting your application:

export GOOGLE_APPLICATION_CREDENTIALS=[path-to-json-cred]
export PUBSUB_VERIFICATION_TOKEN=[your-verification-token]
export PUBSUB_TOPIC=[your-topic]
export BUCKET_NAME=[your-bucket]
export PROJECT_ID=[your-project-id]
python main.py

Simulating push notifications

Assuming you have Frame entities in Datastore with imageUrl property pointing to their storage (on GCS ?)

export PUBSUB_VERIFICATION_TOKEN=[your-verification-token]
python test/call.py

Running on App Engine

gcloud app deploy