Octocatは技術的負債の夢を見るか？

2018/07/13
Rails Developers Meetup 2018 Day 3 Extreme
https://techplay.jp/event/679666

Transcript

1. Octocat͸ٕज़తෛ࠴ͷເΛ ݟΔ͔? 2018/07/13 @treby006 Rails Developers Meetup Day3
2. ࣗݾ঺հ • treby (@treby006) Shinjuku.rb • Reproגࣜձࣾ Dev2νʔϜϦʔμʔ • RailsͰ৽͍͠ػೳΛ࡞ͬͨΓɺطଘػೳͷ վળͨ͠Γ͍ͯ͠Δͱ͜Ζ • Rails, Vue.js, AWS(ECS, EMR), Go
3. ReproͷϦϙδτϦ • Railsͷίʔυϕʔε • Πϯϑϥίʔυ؅ཧ • ӡ༻εΫϦϓτྨ • ͳͲͳͲ
4. ReproͷϦϙδτϦ • Railsͷίʔυϕʔε • Πϯϑϥίʔυ؅ཧ • ӡ༻εΫϦϓτྨ • ͳͲͳͲ
5. աڈҰ೥ؒͷCommit਺ 2Ґ
6. աڈҰ೥ؒͷAdditions/Deletions਺ 1Ґ (෼͔ΓͮΒ͍υϠϦϯά)
7. ReproͷϦϙδτϦ • Railsͷίʔυϕʔε • Πϯϑϥίʔυ؅ཧ • ӡ༻εΫϦϓτྨ • ͳͲͳͲ • େମ CTOͷਓ͕Contribute্Ґ ʹ͍ΔϠόΠ
8. Reproͷ͝঺հ
9. We are hiring!! • ΞϐʔϧϙΠϯτ • େن໛σʔλ / B to B ͳΒͰ͸ͷݻ͞ • َͷΑ͏ʹίʔυ͕ॻ͚Δ • ఆ࣌ͷ֓೦͕ͳ͍ • ෰૷ࣗ༝ʗϦϞʔτϫʔΫࣗ༝ • Conferenceνέοτ୅͕ग़Δ
10. ͳʹͱͧͳʹͱͧ
11. ຊ୊: ٕज़తෛ࠴
12. ٕज़తෛ࠴ͱ͸ ٕज़తෛ࠴ʢӳ: Technical debtʣͱ͸ɺߦ͖౰ ͨΓ͹ͬͨΓͳιϑτ΢ΣΞΞʔΩςΫνϟͱɺ ༨༟ͷͳ͍ιϑτ΢ΣΞ։ൃ͕Ҿ͖ى݁͜͢Ռͷ ͜ͱΛࢦ͢৽͍͠ൺᄻͰ͋Δ ʮઃܭ্ͷෛ࠴(design debt)ʯͱ΋ݴ͏ɻ ---- Wikipediaʮٕज़తෛ࠴ʯΑΓ
13. Կؾͳ͘࢖͏༻ޠ͚ͩͲ • ࣮͸ͦͷ࣮ମΛ௫Έ͖Ε͍ͯͳ͍ • ΤϯδχΞʮ͋ʔͳΔ΄ͲͶʯ • ҰํɺϏδωε্ͷϦεΫ͕෼͔ΓͮΒ͍ • ٕज़తෛ࠴Λ࿦͡Δલʹٕज़తෛ࠴Λ஌Βͳ͚ Ε͹ͳΒͳ͍
14. ੔ཧͯ͠Έͨ
15. ੔ཧͯ͠Έͨ
16. ٕज़తෛ࠴ • ݏͩɺͳ͍ͨ͘͠ • ଟ෼޷͖ͳਓ͸͍ͳ͍
17. ٕज़తෛ࠴ • ݏͩɺͳ͍ͨ͘͠ • ଟ෼޷͖ͳਓ͸͍ͳ͍ • ͳͥʁ => ֐͕͋Δ͔Β • ͲΜͳʁ
18. ٕज़తෛ࠴ʹΑΔฐ֐ • ੬͍ઃܭ • อकੑͷ௿Լ • Ϟνϕʔγϣϯͷ௿Լ(։ൃޮ཰ͷ௿Լ) • νʔϜͷ݈߁ੑͷ௿Լ • ཭৬ɾ࠾༻೉ • ࣄۀͷࣦഊ
19. ٕज़తෛ࠴ͱݺ͹ΕΔ΋ͷ • छྨ • ͍ΘΏΔΫιίʔυ • εέʔϧ͠ͳ͍ΞʔΩςΫνϟ • ͜͜·Ͱམͱͤ͹۩ମྫΛ૝૾͠΍͍͢ • ࠓճ͸ɺಛʹίʔυ࣮૷ʹϑΥʔΧε
20. Ξϯνύλʔϯ(Railsฤ)
21. έʔε1 ಠࣗDSL/ϑϨʔϜϫʔΫΛΞϓϦέʔγϣϯίʔ υʹೖΕΔ class SomeDSL def self.configulation(*args) end module Definition def provide(&definition) end end : : end
22. ಠࣗDSL/ϑϨʔϜϫʔΫΛΞϓϦέ ʔγϣϯίʔυʹೖΕΔ • 0 → 1ͷϑΣʔζͰ΍Γ͕ͪ • େ఍όάϑΟΫε΍ػೳ௥ՃͷϫʔΫΞϥ΢ϯ υ͕ੵΈॏͳͬͯݟ௨͠ѱ͘ͳΔ • ͦͷ෦෼͕ຊ౰ʹރΕ͍ͯΕ͹໰୊ʹͳΒ ͳ͍͜ͱ΋͋Δ͕……
23. ಠࣗDSL/ϑϨʔϜϫʔΫΛΞϓϦέ ʔγϣϯίʔυʹೖΕΔ • ։ൃऀࣗ਎͕खΛೖΕ΍͍͢ͷ͕·͍ͣ • ͦͷ࣌୲౰͍ͯ͠Δػೳ։ൃϕʔεͰमਖ਼Ͱ ͖Δ • ౰ॳ͋ͬͨ͸ͣͷDSL/ϑϨʔϜϫʔΫͷࢥ ૝͕յΕΔ
24. ಠࣗDSL/ϑϨʔϜϫʔΫΛΞϓϦέ ʔγϣϯίʔυʹೖΕΔ • ָ͍͠RubyͱͷτϨʔυΦϑ • ॻ͖ͨ͘ͳΔ͚ͲνʔϜ։ൃͰ͸߇͑ͨ΄ ͏͕ແ೉ • gemͱͯ͠OSSެ։ͷํ͕݈શ
25. έʔε2 ੹຿͕ᐆດͳ૚ΛऔΓೖΕͯ͠·͏ class SomeController < ApplicationController : : def create @presenter = SomePresenter.new(@some_model) if @presenter.save redirect_to :some_path else render :new end end end
26. έʔε2 class SomePresenter < PresenterBase attr_reader :form delegate :save, to: :form def initialize(some_model) @form = SomeForm.new(some_model.attributes, self) end : : end
27. έʔε2 class SomeForm < FormBase validate :something : : def initialize(params) : : end end
28. ੹຿͕ᐆດͳΫϥεΛऔΓೖΕͯ͠· ͏ • ͍ΘΏΔࣅඇαʔϏεΫϥε • RailsͷϨʔϧʹ৐͍ͬͯͳ͍෦෼ • Կͷ໰୊΋ͳ͍Α͏ʹݟ͑Δ • ͕ɺෳ਺ਓͰ։ൃΛଓ͚ͯΔͱ……
29. SomeForm : Before class SomeForm < FormBase validate :something : : def initialize(params) : : end end
30. SomeForm : After class SomeForm < FormBase validate :something : : attr_reader :presenter def initialize(params, presenter) : @presenter = presenter : end def validate presenter.some_methods super end end
31. Presenter : Before class SomePresenter < PresenterBase attr_reader :form delegate :save, to: :form def initialize(some_model) @form = SomeForm.new(some_model.attributes, self) end : : end
32. Presenter : After class SomePresenter < PresenterBase attr_reader :form def initialize(some_model) @form = SomeForm.new(some_model.attributes, self) end def save : @form.save : end : : end
33. ੹຿͕ᐆດͳΫϥεΛऔΓೖΕͯ͠· ͏ • ݁߹౓͸্͕Γଓ͚ɺΠϯελϯεͷ૬ޓࢀর ͕ൃੜ • Ͳ͜ʹॻ͚͹Α͍ͷ͔Θ͔Βͳ͍͠ɺͲ͜ ʹॻ͍ͯ΋Α͍ؾ͕ͯ͘͠Δ • ৮Γͨ͘ͳ͍͠ɺ৮ΔͱόάΔ ͷͰɺ࠷খͷ มߋͰٻΊΒΕ͍ͯΔཁ݅Λຬͨ͢Α͏ʹͳΔ • ׂΕ૭ཧ࿦
34. ੹຿͕ᐆດͳΫϥεΛऔΓೖΕͯ͠· ͏ • ͜͏͍͏ͱ͜ΖʹݶͬͯɺϏδωεతʹίΞཁ ૉͩͬͨΓ͢Δ • ฐࣾͰ͍͏ͱϞσϧΛϑϩϯτ͔Β࡞੒͢Δ෦ ෼ʹଘࡏ͍ͯͨ͠ • ௚͢ͷʹ൒೥͘Β͍͔͔Γ·ͨ͠ • ͠ɺ௧Έ΋͋ͬͨ
35. ͱ͸͍͑ • ίʔυϨϏϡʔ΋ͯ͠Δ͠ɺCI΋ճ͍ͬͯΔ • ͦΕͰ΋ͳ͓ෛ࠴ͱݺ͹ΕΔ΋ͷ͕ੜ·Ε Δͷ͸ͳ͔ͥ
36. ٕज़తෛ࠴͕ੜ·ΕΔཧ༝ • ҰݸਓʹىҼ • ࣌ؒෆ଍ • ٕज़ྗෆ଍ • ৸ෆ଍ • ͕ɺݱ࣮ʹ͸νʔϜ։ൃͰࣗ෼͕஌Βͳ͍͏ͪ ʹίʔυ͕มߋ͞Ε͍ͯΔͱ͍͏͜ͱ΋Α͋͘ Δ
37. ࣄۀతʹՁ஋͕͋Δͱ͜Ζʹ ෛ࠴͸ཷ·Γ΍͍͢ • ࣄۀతʹՁ஋͕͋Δ • → ଟ͘ػೳཁ͕݅ೖΔ • → ଟ͘ͷϝϯόʔ͕मਖ਼͢ΔՄೳੑ͕͋Δ • → ͔ͭɺଟ͘ํ਑స׵͢ΔՄೳੑ͕͋Δ • ෳ਺ਓͰಉ͡ՕॴΛසൟʹ৮ΔͷͰɺٕज़తෛ ࠴͕ੜ·Ε΍͍͢
38. ͖͞΄ͲͷΞϯνύλʔϯ • ࠷ॳͷίʔυ͕ॻ͔Εͨஈ֊ɿ ͻͲ͘ͳ͍ • αʔϏεΛਐΊΔ͋ΔλΠϛϯάͰੜ·Ε ͯ͠·ͬͨ΋ͷ • ٕज़తෛ࠴ͷΞϯνύλʔϯ => ٕज़తෛ࠴ ΛੜΈग़͠΍ͯ͘͢͠͠·͏Ξϯνύλʔϯ • ٕज़తෛ࠴ΛੜΈग़͞ͳ͍ίʔυ͸ͳ͍ • αʔϏεΛ૸Βͤଓ͚ΔݶΓɺίʔυͷมߋ͸ ආ͚ΒΕͳ͍
39. େࣄͳ͜ͱ͸ • ։ൃ଎౓Λग़͠ͳ͕Βɺػೳ௥ՃΛ͠ͳ͕Βί ʔυͷ݈߁ੑΛอͭ͜ͱ • ։ൃ(αʔϏε)͕ਐΉաఔͰίʔυશମΛ၆ ᛌ͢ΔػձΛઃ͚Δ͜ͱ • ͦΕͧΕҧ͏։ൃऀ͕ಉ͡໨ઢͰίʔυશ ମΛΈଓ͚Δ͜ͱ
40. ٕज़తෛ࠴ : νʔϜ։ൃ
41. ٕज़తෛ࠴Λ࡞Βͳ͍
42. ٕज़తෛ࠴Λ࡞Βͳ͍
43. ٕज़తෛ࠴ͱ޲͖߹͏
44. ٕज़తෛ࠴͸ͳͥੜ·ΕΔͷ͔ • ෆ࣮֬ੑ΁ͷରॲͷࣦഊ • ࣗ෼ʹͱͬͯΘ͔Βͳ͍(ෆ࣮֬ͳ)΋ͷɿ ະདྷͱଞਓ • ͜ΕΒෆ࣮֬ͳ΋ͷʹରॲ͖͠Εͳ͔ͬͨ • νʔϜͱͯ͠ɺෆ࣮֬ੑʹͲ͏޲͖߹͍ͬͯ͘ ͔
45. ٕज़తෛ࠴ͷਖ਼ମ
46. લʹਐΜͰ͍Δ͔Βͦ͜ͷٕज़తෛ࠴
47. ͜Θ͘ͳ͍ٕज़తෛ࠴ • ͲΜͳʹࠅ͍ίʔυͰ΋ɺ͜ͷઌ͍͡Δ͜ͱ͕ ઈରʹͳ͍ͷͰ͋Ε͹ෛ࠴Ͱ͸ͳ͍ • ٕज़తෛ࠴ʹΑΔਏ͞ͷࠜݯ • ࠓͦͷ࣌ɺػೳΛ௥Ճ͠Α͏ͱͯ͠΋Ͱ͖ ͳ͍ʗͮ͠Β͍ͨΊ • ࠓͷ͜ͱ͕ࠓΑΓෆ࣮֬ͩͬͨաڈʹɺ΋͔͠ ͨ͠Βࣗ෼Ͱͳ͍ଞਓ͕ॻ͍ͨίʔυΛࠓ͍͡ Δͷ͕ਏ͍
48. ະདྷ ͷෆ࣮֬ੑ͸୭ʹ΋ରॲ Ͱ͖ͳ͍
49. ଞਓ ͷෆ࣮֬ੑ͸ϝιουͰ ղফͰ͖Δ͔΋͠Εͳ͍
50. ଞਓͱͷؒͷෆ࣮֬ੑʹରॲ͢Δϝι ου • ରɾϏδωεαΠυ(ඇΤϯδχΞ) • ϢϏΩλεݴޠ • ରɾΤϯδχΞ • ઃܭ(஍ਤͷڞ༗)
51. ଞਓͱͷؒͷෆ࣮֬ੑʹରॲ͢Δϝι ου • ରɾϏδωεαΠυ(ඇΤϯδχΞ) • ϢϏΩλεݴޠ • ରɾΤϯδχΞ • ઃܭ(஍ਤͷڞ༗) • ଞͷ෦෼ʹ͍ͭͯ͸લग़ͷຊ͕ৄ͍͠
52. ஍ਤΛڞ༗͢Δ https://speakerdeck.com/joker1007/realworld- domain-model-on-rails
53. ஍ਤΛڞ༗͢Δ https://speakerdeck.com/joker1007/realworld- domain-model-on-rails
54. νʔϜͰ஍ਤΛڞ༗͢ΔͨΊʹ৺͕͚ ͍ͯΔ͜ͱ • ஍ਤ͕͢Ͱʹ͋Ε͹ • ڊਓͷݞͷ্ʹཱͭɿϨʔϧʹ৐Γଓ͚Δ • ஍ਤ͕ͳ͍ͷͰ͋Ε͹ • ஍ਤΛ࡞ͬͯ ෍ڭ͢Δ
55. Ϩʔϧʹ৐Γଓ͚Δͱ͍͏બ୒ • Railsͷ͍͢͝ͱ͜Ζ • Ϩʔϧͱ͍͏໊ͷ஍ਤ͕޿͍ൣғͰڞ༗͞ Ε͍ͯΔ͜ͱ • CoC (Convention over Configuration) • RailsΤϯδχΞ͸RailsϓϩδΣΫτͰ͋Ε͹ଈ ઓྗΛظ଴Ͱ͖Δ(ࣄ͕ଟ͍) • Ϩʔϧ͔Β֎Ε·ͬͯͨ͘৔߹͸ผ͕ͩ
56. ஍ਤ͕ͳ͍෦෼ʹ௚໘ͨ͠Β • ͱ͸͍͑ɺ஍ਤͷͳ͍஍Ҭ΋ଟ͍ • ͦͷձࣾಛ༗ͷΧϧνϟʔ • ฐࣾͩͬͨΒσʔλετΞܥͷ֓೦͕ଟ͘ ଘࡏ͢Δ • ஍ਤΛ࣋ͨͳ͍ਓ: ͲΜͳ஍ਤ͕͍Δͷ͔ͷΤ εΧϨ • ஍ਤΛ࣋ͭਓ: ஍ਤΛ޿͘஌Β͠ΊΔ౒ྗ
57. ·ͣ͸ॻ͍ͯΈΔ
58. ϨϏϡʔΛґཔ
59. ౰ͨΓલͩ͠஍ຯ͚ͩͲɺ͢ ͘͝େࣄ !
60. ࣼʹߏ͍͑ͯͯ͝ΊΜͳ͍͞ !
61. ·ͱΊ • ٕज़తෛ࠴ɿωΨςΟϒͳΠϝʔδ • ͍ΘΏΔٕज़తෛ࠴ʹΑΔѱӨڹ • ࠓͦͷ࣌ɺखΛՃ͑Α͏ͱ͢Δࣗ෼ׂ͕৯ ͍ͬͯΔͨΊ • ࣗ෼ࣗ਎͸ίϯτϩʔϧՄೳ(Ͱ͢ΑͶʁ) • ίϯτϩʔϧෆೳͳͷ͸ ະདྷͱଞਓ
62. ·ͱΊ • ະདྷͷෆ࣮֬ੑ΁ͷରॲ͸ఘΊͨʹͯ͠΋ɺଞ ਓͱͷෆ࣮֬ੑͳΒݮΒͤΔ͔΋ • νʔϜ಺Ͱ஍ਤΛڞ༗͠Α͏ • ྑ͖νʔϜ։ൃΛʂ • ະདྷ͕ݟ͑ͳ͍ʁͦΕͳΒ……
63. We are hiring!! • ΞϐʔϧϙΠϯτ • େن໛σʔλ / B to B ͳΒͰ͸ͷݻ͞ • َͷΑ͏ʹίʔυ͕ॻ͚Δ • ఆ࣌ͷ֓೦͕ͳ͍ • ෰૷ࣗ༝ʗϦϞʔτϫʔΫࣗ༝ • Conferenceνέοτ୅͕ग़Δ
64. એ఻ɿRepro Tech Meetup https://repro-tech.connpass.com/event/94282/
65. Happy Hacking!!
66. ࢀߟ: શମΞʔΩςΫνϟڞ༗