Kafka protype.

[kevinsookocheff-wf]

As requested by #60 (comment)

Contains a prototype implementation of reading from Kafka. Requires Kafka 0.9.0.0.

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[kevinsookocheff-wf]

The CLA has been signed as a corporation (Workiva).

[dhalperi]

might consider using versions that write to / read from streams directly ,e.g., https://sites.google.com/site/gson/streaming

(We actually use Jackson in Dataflow core SDK, not sure about pros/cons of Gson).

[dhalperi]

Hi Kevin,

Thanks for this pull request. Some nice stuff in here and others will have a great foundation to build on.

I know it's a WIP and that you've moved on. I left some comments, but how you want to respond is up to you. You could make code changes, you could make TODOs, you could leave as-is untouched.

The level of polish on a contrib package is generally up to the author. Let me know when it's ready for either more review or merging.

Thanks,
Dan

[kevinsookocheff-wf]

@dhalperi I will probably leave this as is (for now). If you prefer I can put this up on my personal Github rather than here.

[dhalperi]

Thanks @kevinsookocheff-wf! I think we'll leave this here and open as a place for others who come looking.

[dhalperi]

Hi Kevin,

KafkaIO is now in active development under PR #121 for BEAM-52. Would you be okay with closing this PR?