we absolutely do, the library itself is designed to be extensible. we are currently working on adding webhooks as one of our sources. are there are any specific connectors/sources you'd be interested in?

I have lots of HTTP endpoints that we poll with a cursor but actually the underlying data is very large (we work with snapshots of it) and updates very frequently and eventually we'll move to something else (e.g. interact directly with the underlying services with capnproto) so really it would just be useful to be able to define these sources ourselves. I'm working doing full-stack engineering at an HFT currently and we were thinking of using DataFusion to allow users to join, query and aggregate the data in realtime but I haven't attempted this yet (and to do so means integrating with what currently exists as I don't have time to rewrite all of the services).