Note that this is a big data infrastructure-level data schema, not an application-level data schema; i.e. this is a wrapper which goes around the raw data, hence there is no normalisation fo the data required (more on that in a future post).
There are a number of data sources that we’ve already integrated with PNDA:
If these don’t address your needs, it’s relatively simple to write a custom data producer for PNDA; see the http://pnda.io/pnda-guide/producer/ section in the PNDA guide. If you’ve written one you want to upstream, we’d welcome your contribution!