Kafka Streams API support

[mihaisoloi]

Adding support for the Streams API[1] offers some benefits, and is well matched for Monix's strengths which would allow interoperability with the KStream DSL[2]. This could be implemented as a Monix KafkaStreamSubject in monix-kafka, as the Streams API is used for both consuming and publishing to topics.

[1] https://docs.confluent.io/current/streams/introduction.html#the-kafka-streams-api-in-a-nutshell
[2] https://docs.confluent.io/current/streams/javadocs/org/apache/kafka/streams/kstream/KStream.html

[alexandru]

👍 but only if somebody commits to developing it

[ryanworsley]

Any thoughts on how state stores would be handled within the API without leaking the Kafka Streams abstractions through? I'm keen to help as this is something I'm probably going to do professionally in the near future anyway.

[Avasil]

I'm currently focused on helping with Monix 3.0.0 release so unfortunately can't think about it too much right now but @leandrob13 has started working on Kafka Streams support in #35 so maybe you can work together on this. :)

I'll try to give my input as soon as I can

[leandrob13]

@Avasil @ryanworsley any help is welcomed! I just started defining config and wrappers, it seems kind of straight forward after looking at KStream API but I don't know if Iterant should fit in some places.

Focused on some issues regarding TaskLocal in monix but I will be engaging in this shortly again. Waiting for some feedback and pointers for the first approach.