Simple Mock ActionHub for local or serverless (GCF) use

Local deployment with local Looker instance

See gcf-mock/README.md

Cloud Deployment to Google Cloud Functions

More details to come. Here's the gist:

1. Deploy Action to Google Cloud Functions
   • Specify action as the directory where the function/module is defined
   • Specify httpHandler as the exported function to call
   • Environment variables
     • CALLBACK_URL_PREFIX (e.g. https://<region>-<project>.cloudfunctions.net/<function>)
     • EXPECTED_LOOKER_SECRET_TOKEN (choose any random string)
2. Configure Looker instance
   • /admin/actions
     • Enter the expected secret token from step 1