phoenix_channels

Transcript

1. Phoenix Channels junichi kuriyama(@astapi) 2016.08.31 tokyo.ex#5
2. • junichi kuriyama(@astapi) • ॴଐ • ݩ ͳձࣾ • ࢓ࣄͰ͸Rubyͨ͠ΓElixirͨ͠ΓΠϯϑϥ(AWS)ͯ͠·͢ • ٳ೔͸Erlangͨ͠ΓElixirͨ͠Γͯ͠·͢
3. ࿩͢಺༰ • Phoenix ͷ Channels ͱ͍͏ػೳͷ঺հ • ࠾༻ࣄྫ
4. channels ͱ͸ʁ
5. WebSocket Ͱେมͳͱ͜Ζ Λ৭ʑ΍ͬͯ͘ΕΔ΍ͭ
6. • ઀ଓपΓ • connection؅ཧ • pubsub • broadcast௨৴
7. ϦΞϧλΠϜͳ૒ํ޲௨৴Λ ͍͍ײ͡ʹ΍ΕΔ΍ͭ
8. େ͖͘3module͋Δ ※ݸਓͷײ૝Ͱ͢
9. • Transports • Channel • PubSub
10. Transports • cowboy < - > channel ( message dispatch) • encode & decode • phoenix message < -> json • WebSocket & LongPolling ( fall back )
11. Channel • GenServer • controllerతͳ • transport < - > channel • transport͕ݺͿɺcall back ϝιουͷ࣮૷ • Rest API ײ֮ͰϩδοΫʹूதͰ͖Δ
12. xxx_channel.ex def handle_in(“new_msg”, %{“uid” => uid, “body” => body}, socket) do broadcast! socket, “new_msg”, %{uid: uid, body: body} {:noreply, socket} end def handle_in(“create:post”, attrs, socket) do changes = Post.changeset(%Post{}, attrs) if changeset.valid? do Repo.insert!(changeset) {:reply, :ok, socket} else {:reply, :error, socket} end end
13. PubSub • publish - subscribe • connection process ؅ཧ ( ets ) • pubsub backend • Pg2 ( default) • Redis • RabbitMQ • Postgres
14. ࢀߟจݙ Elixir Slack (#phoenix)
15. ࠾༻ࣄྫ
16. ࠾༻ࣄྫ
17. ৄ͘͠͸ͪ͜Β http://logmi.jp/155707
18. Կ͔Λ͢Δ - ౤ߘ? - profileߋ৽? phoenix server Կ͔͋ͬͨΑɻ ͱɺwebsocketʹ ઀ଓ͍ͯ͠Δ Ϣʔβʔʹ௨஌
19. ·ͱΊ
20. • channels͸websocketΛ͍͍ײ͡ʹ࢖͑ Δ΍ͭ • channels͸େ͖͘ɺtransports, channel, pubsub ͷ3ͭ • channel ͷ࣮૷ʹʢ΄΅ʣूதͰ͖Δ
21. we are hiring @ • Phoenix ͷ Channels ͱ͍͏ػೳͷ঺հ