GCP cost control cloud function

This code is used in a cloud function that can be used as a utility to cap costs and stop usage for a GCP project by disabling Cloud Billing. This automation process is dependent on receiving budget notifications.

Disabling billing on a project will cause all Google Cloud services in the project to terminate. You might cap costs because you have a hard limit on how much money you can spend on Google Cloud.

How it works

The general workflow for disabling billing is described here. The process is broken down into the following steps:

1. Create a budget in your billing account.
2. Create a pubsup topic that will receive billing notifications.
3. Configure the pubsub topic as the notification endpoint for the budget.
4. Create a cloud function using the code in this repo. The function should be configured to listen to the pubsub topic.

The above process is automated using terraform in a separate project.