Anyone had any luck with logging and sending it into other GCP products like BigQuery or Cloud Store? I see documented support for AWS but just Sub/Pub for GCP.

Typically folks use Pub/Sub as a conduit for whatever the final destination is. https://cloud.google.com/dataflow/docs/guides/templates/provided-streaming hopefully helps.

I might have missed it but is there a schema file to for the data elements to reference somewhere?