Add Celluloid support next to EventMachine

[dblock]

See https://github.com/abstractive/slack-ruby-gem/commit/41a45ba11a11c087b501654a159e72f27526dd9d.

[digitalextremist]

I'll add Celluloid support, as I have in the other gem. Two things though.

• I'd actually use Reel::IO ( celluloid/reel-io#2 ).
• I'd also use this http gem instead.

[dblock]

@digitalextremist are you saying we should replace Faraday for httprb? I would be open to it, but I am not sure it matters for slack-ruby-client given that HTTP communication is hardly the overhead.

[digitalextremist]

Correct, it is unrelated to the WebSocket aspect, so I will post a second ticket for this piece. Why I mention it is that this http gem is compatible with Celluloid::IO which makes it evented, and in my uses, I do have many concurrent requests taking place at once in many cases.

[mikz]

I'm really interested in this. Is there a way I could help?

[dblock]

Please contribute @mikz!

[mikz]

I'd like not to clash on some ongoing work. I plan to make a prototype using just celluloid-io and websocket-driver without using reel-io.

[mikz]

@dblock @digitalextremist I did a prototype. See the code in dblock@ced303d. It successfully connected to slack and was answering with celluloid.

The celluloid integration is probably not very correct. It crashes on Ctrl-C.

What I'd like to do next:

• cover it with tests that work for both concurrency options
• refactor the socket / client so it is more understandable

[dblock]

This is very good. I actually think this whole code should be a gem that abstracts various ways of doing concurrency.

[mikz]

@dblock opened #15 for discussion

tuned a bit the original prototype so now it detects what you have available
tried both realtime examples and they work

it is possible that some cases are broken, like closing connection or processing some messages
but rather to show it early than go the wrong path

[dblock]

Closing via https://github.com/dblock/slack-ruby-client/pull/26. Please try Celluloid support on HEAD.