Problem triggering Cloud Functions with Looker Actions

[mattia_mancasso]

Hello everyone,

I spent the last two days trying to figure out how to trigger a Cloud Function from Looker.
I have a simple action written in LookML:

dimension: profile_id {
  primary_key: yes
  type: string
  sql: ${TABLE}.Profile_ID ;;
  action: {
    label: ""
    url: "https://my_trigger_url_of_the_cloud_function.com"
    param: {
      name: "Profile_ID"
      value: "{{ value }}"
    }
    form_param: {
      name: "updated_value"
      type: string
      label: ""
    }
  }
}

This action should trigger a Cloud Function, which updates a table on BigQuery according to the parameters.

The problem is that when I execute the Action from the Looker dashboard, I receive the error “The form was not accepted”.

Following this post, I added the Cloud Functions Invoker permission to the service account I’m using in Looker, with no results.

I think it could be a problem of authentication. Note indeed that for security reason I can’t allow unauthenticated access to the Cloud Function. However, I can’t find any way to authenticate the Looker Action.

P.S.: in the logs of the Cloud Function there is nothing: no errors, no messages.

Thanks for your help.