httpsink | Any endpoint | HTTP library

I am looking for a way to setup windowing to allow for lateness as well as let me calculate values based on previous values calculated for the session.

My sessions values are overall a unique identifier, and should never have collisions, but sessions can technically come in at anytime. On most sessions, most events are processed over 5 minutes, Allowing lateness of 1 day should satisfy any late events.

I have successfully deployed a local docker registry and implemented an listener endpoint to receive event notifications following the documentation for configuration using a sample insecure configuration file. Pushing, pulling and listing images work well. However, i still receive no event notification. The registry logs are throwing some errors i do not really understand:

I think this is a bit advanced for me, but my goal would be to get the raw json from an http API, parse a first list from it, do whatever I need to do with that then move on to the next list, and so on. My hope being that this should allow for only one list at a time to be loaded in memory (each list is pretty small, but there are a LOT of lists in the json). I tried it with Aeson, and it ate up all the ram and processed endlessly for hours, I ended up having to kill it.

If I understand it correctly, httpSink should be the way to go, with maybe json-stream to do the actual parsing. I read the tutorial about conduits, but I'm clearly not understanding it properly since I can't make that work.

I know how to use parseByteString to decode a ByteString the way I need (at least my tests seem to work), but I can't figure out a way to use parseByteString as a Sink for httpSink's second parameter. Am I missing something obvious, or am I mistaken about the way conduit works ?

Thanks