Slide 1
Slide 1 text
࣋ଓతͳΞϓϦ։ൃͷͨΊͷ
DXΛࢧ͑Δٕज़
KeithYokoma (Keishin Yokomaku) /
DroidKaigi 2020
Slide 2
Slide 2 text
࣋ଓతͳΞϓϦ։ൃͷͨΊͷDXΛࢧ͑Δٕज़
About Me
▸ Keishin Yokomaku
▸ @KeithYokoma: GitHub / Twitter / Qiita / Stack Overflow
▸ Merpay, Inc. / Engineer
▸ Fun: Gymnastics / Cycling / Photography / Motorsport / Camping
DroidKaigi 2020
2
Slide 3
Slide 3 text
࣋ଓతͳΞϓϦ։ൃͷͨΊͷDXΛࢧ͑Δٕज़
͜ͷηογϣϯͷత: Objectives
▸ ϞόΠϧΞϓϦͷ։ൃϓϩηεΛ࣋ଓతʹૉૣ͘ճ͚ͭͮ͠ΒΕΔΑ͏ʹͳΔ
▸ ΤϯδχΞϦϯάνʔϜͱͯ͠ɺΑ͍ DX Λ֫ಘ͢ΔͨΊɺ
։ൃʹணख͢Δલ͔Β࣮ࡍʹϦϦʔεͯ͠ӡ༻͍ͯ͘͠·Ͱͷؒʹɺ
ͲΜͳ͜ͱʹͯ͠ࢪࡦʹऔΓΉͱΑ͍͔ɺࢦΛࣔ͠·͢
DroidKaigi 2020
3
Slide 4
Slide 4 text
Developer Experience
։ൃମݧ
DroidKaigi 2020
Slide 5
Slide 5 text
࣋ଓతͳΞϓϦ։ൃͷͨΊͷDXΛࢧ͑Δٕज़
ͳͥ DX ͕ॏཁ͔: Why DX matters?
▸ ϓϩμΫτʑΛଓ͚Δ
▸ ৽ػೳͷՃ
▸ طଘػೳͷվम
▸ όάमਖ਼
▸ ͳͲ
DroidKaigi 2020
5
Slide 6
Slide 6 text
࣋ଓతͳΞϓϦ։ൃͷͨΊͷDXΛࢧ͑Δٕज़
ͳͥ DX ͕ॏཁ͔: Why DX matters?
▸ ιʔείʔυຖมԽΛ͠ଓ͚Δ
▸ ৽͍͠ΫϥεɾϝιουͷՃ
▸ طଘΫϥεɾϝιουͷৼΔ͍ͷมߋ
▸ ϥΠϒϥϦͷߋ৽
▸ ͳͲ
DroidKaigi 2020
6
Slide 7
Slide 7 text
࣋ଓతͳΞϓϦ։ൃͷͨΊͷDXΛࢧ͑Δٕज़
ͳͥ DX ͕ॏཁ͔: Why DX matters?
▸ ظؒͷΠςϨʔγϣϯΛܧଓ͠ɺϓϩμΫτΛͤ͞Δϓϩηε͕ඞཁ
▸ 1 ~ 2 िؒ͝ͱͷϦϦʔεͰԾઆݕূΛͲΜͲΜճ͍ͯ͘͠
▸ ૉૣ͍ػೳ࣮ʢࡉ͔͘࡞Γ্͍͛ͯ͘ϓϩηεͷ܁Γฦ͠ʣ
▸ ૉૣ͍ৼΓฦΓʢࡉֶ͔͘ͼΛൃݟ͠దԠ͍ͯ͘͠ϓϩηεͷ܁Γฦ͠ʣ
DroidKaigi 2020
7
Slide 8
Slide 8 text
࣋ଓతͳΞϓϦ։ൃͷͨΊͷDXΛࢧ͑Δٕज़
ͳͥ DX ͕ॏཁ͔: Why DX matters?
▸ ظؒͷΠςϨʔγϣϯΛܧଓ͠ɺϓϩμΫτΛͤ͞Δϓϩηε͕ඞཁ
▸ 1 ~ 2 िؒ͝ͱͷϦϦʔεͰԾઆݕূΛͲΜͲΜճ͍ͯ͘͠
▸ ૉૣ͍ػೳ࣮ʢࡉ͔͘࡞Γ্͍͛ͯ͘ϓϩηεͷ܁Γฦ͠ʣ
▸ ૉૣ͍ৼΓฦΓʢࡉֶ͔͘ͼΛൃݟ͠దԠ͍ͯ͘͠ϓϩηεͷ܁Γฦ͠ʣ
▸ Α͍ DX Λ࡞Δ͜ͱͰɺ͜ͷϓϩηεΛ͏·͘ճͤΔΑ͏ʹͳΔ
▸ DX ϓϩμΫτͷʹඞཁෆՄܽ
DroidKaigi 2020
8
Slide 9
Slide 9 text
࣋ଓతͳΞϓϦ։ൃͷͨΊͷDXΛࢧ͑Δٕज़
DroidKaigi 2020
9
Slide 10
Slide 10 text
࣋ଓతͳΞϓϦ։ൃͷͨΊͷDXΛࢧ͑Δٕज़
Agenda
▸ ࣄલ४උ
▸ ઃܭ
▸ ։ൃϓϩηε
▸ ϦϦʔε
DroidKaigi 2020
10
Slide 11
Slide 11 text
Preparation
ࣄલ४උ
DroidKaigi 2020
Slide 12
Slide 12 text
࣋ଓతͳΞϓϦ։ൃͷͨΊͷDXΛࢧ͑Δٕज़
ࣄલ४උ: Preparation
▸ ࣄલʹνʔϜͰ͠߹͓ͬͯ͘ͱΑ͍͜ͱ
▸ ίʔσΟϯάن
▸ ϒϥϯνઓུ
DroidKaigi 2020
12
Slide 13
Slide 13 text
࣋ଓతͳΞϓϦ։ൃͷͨΊͷDXΛࢧ͑Δٕज़
ίʔσΟϯάن: Coding standards
▸ ίʔυͷॻ͖ํ (ελΠϧ) ʹ͍ͭͯೝࣝΛἧ͑Δ
▸ εϖʔεΠϯσϯτ vs λϒΠϯσϯτ
▸ ࠷ऴߦʹվߦΛ͍ΕΔ͔Ͳ͏͔
▸ Ұߦͷ͞
▸ etc…
DroidKaigi 2020
13
Slide 14
Slide 14 text
࣋ଓతͳΞϓϦ։ൃͷͨΊͷDXΛࢧ͑Δٕज़
ίʔσΟϯάن: Coding standards
▸ ίʔσΟϯάنΛϦϙδτϦͰڞ༗͍ͨ͠
▸ .editorconfig
▸ IDE ʹίʔσΟϯάنʹैͬͨϑΥʔϚοτΛͤ͞Δ
▸ AndroidStudio/IntelliJ IDEA ͳΒՃͷ Plugin ͳ͠Ͱ͑Δ
DroidKaigi 2020
14
Slide 15
Slide 15 text
࣋ଓతͳΞϓϦ։ൃͷͨΊͷDXΛࢧ͑Δٕज़
.editorconfig ͷྫ: .editorconfig example
root = true
[*] "// apply the following styles to all files
indent_style = space
indent_size = 2
end_of_line = lf
charset = utf-8
trim_trailing_whitespace = true
insert_final_newline = true
[*.{java,kt,kts,xml}] "// only apply to java/kt/kts/xml files
max_line_length = 140
[*.md] "// only apply to markdown files
trim_trailing_whitespace = false
DroidKaigi 2020
Slide 16
Slide 16 text
࣋ଓతͳΞϓϦ։ൃͷͨΊͷDXΛࢧ͑Δٕज़
ϒϥϯνઓུ: Branch strategy
▸ ϒϥϯν͝ͱʹׂΛܾΊͯӡ༻͢ΔͨΊͷϧʔϧͮ͘Γ
▸ Git flow
▸ GitHub flow
DroidKaigi 2020
16
Slide 17
Slide 17 text
࣋ଓతͳΞϓϦ։ൃͷͨΊͷDXΛࢧ͑Δٕज़
Git flow
▸ master
▸ ϦϦʔε͝ͱʹ develop ΛϚʔδ͠ tag ΛଧͭͨΊͷϒϥϯν
▸ develop
▸ ීஈͷ։ൃʹ͓͍ͯɺϨϏϡʔࡁΈͷࠩΛऔΓࠐΈଓ͚Δϒϥϯν
▸ release/hotfix branches
▸ ϨϏϡʔࡁΈͷόάमਖ਼ࠩΛऔΓࠐΉϒϥϯν
DroidKaigi 2020
17
Slide 18
Slide 18 text
࣋ଓతͳΞϓϦ։ൃͷͨΊͷDXΛࢧ͑Δٕज़
Git flow - Overview
DroidKaigi 2020
18
master
hotfix!/*
release!/*
bugfix"/*
feature"/*
develop
v1.1.0 v1.1.1
Slide 19
Slide 19 text
࣋ଓతͳΞϓϦ։ൃͷͨΊͷDXΛࢧ͑Δٕज़
Git flow - Feature development
DroidKaigi 2020
19
master
hotfix!/*
release!/*
bugfix"/*
feature"/*
develop
Feature A Feature B
Slide 20
Slide 20 text
࣋ଓతͳΞϓϦ։ൃͷͨΊͷDXΛࢧ͑Δٕज़
Git flow - Feature verification and release for v1.1.0
DroidKaigi 2020
20
master
hotfix!/*
release!/*
bugfix"/*
feature"/*
develop
v1.1.0
Bugfix Bugfix Bugfix
Slide 21
Slide 21 text
࣋ଓతͳΞϓϦ։ൃͷͨΊͷDXΛࢧ͑Δٕज़
Git flow
DroidKaigi 2020
21
master
hotfix!/*
release!/*
bugfix"/*
feature"/*
develop
v1.1.0 v1.1.1
Bugfix
Slide 22
Slide 22 text
࣋ଓతͳΞϓϦ։ൃͷͨΊͷDXΛࢧ͑Δٕज़
GitHub flow
▸ master
▸ ৗʹϦϦʔεՄೳͳࠩΛอ͍࣋ͯ͠Δϒϥϯν
DroidKaigi 2020
22
Slide 23
Slide 23 text
࣋ଓతͳΞϓϦ։ൃͷͨΊͷDXΛࢧ͑Δٕज़
GitHub flow
DroidKaigi 2020
23
master
v1.1.0 v1.3.0
feature"/*
Feature A Feature A
v1.2.0
Bugfix
v1.2.1
Feature C
Slide 24
Slide 24 text
࣋ଓతͳΞϓϦ։ൃͷͨΊͷDXΛࢧ͑Δٕज़
ϒϥϯνઓུͷൺֱ: Comparison between Git flow and GitHub flow
▸ Git flow
▸ ϦϦʔεʹ͚ͨࠩཧͷͨΊͷϒϥϯνͷ͚ํΛ͢Δ
▸ ωΠςΟϒΞϓϦͱ૬ੑ͕͍͍
▸ GitHub flow
▸ ΞϓϦέʔγϣϯΛࡉ͔͘σϓϩΠ͢Δ͜ͱʹϑΥʔΧε͍ͯ͠Δ
▸ සൟʹσϓϩΠ͢ΔαʔόʔΞϓϦέʔγϣϯͱ૬ੑ͕͍͍
DroidKaigi 2020
24
Slide 25
Slide 25 text
࣋ଓతͳΞϓϦ։ൃͷͨΊͷDXΛࢧ͑Δٕज़
ϒϥϯνઓུͷ࠷దԽ: Optimize branch strategy
▸ ࣗͨͪͷϫʔΫϑϩʔʹ࠷దԽͯ͠ OK
▸ Git flow Δ͜ͱ͕ଟͯ͘ཧ͕໘ʹͳΓ͕ͪ
▸ GitHub flow Ͱ QA ϑΣʔζͷͱ͖ɺ
ฏߦͯ͠ػೳ։ൃϒϥϯνΛϚʔδͮ͠Β͘ͳΔ
➡ ྆ऀͷؒͷࢠͷΑ͏ͳઓུΛߟ͑ͯΈΔ
DroidKaigi 2020
25
Slide 26
Slide 26 text
࣋ଓతͳΞϓϦ։ൃͷͨΊͷDXΛࢧ͑Δٕज़
Combination of Git flow and GitHub flow
DroidKaigi 2020
26
master
feature"/*
release!/*
Feature A Feature B
bugfix"/*
Bugfix Bugfix
hotfix!/*
v1.1.0
Bugfix
v1.1.1
Slide 27
Slide 27 text
࣋ଓతͳΞϓϦ։ൃͷͨΊͷDXΛࢧ͑Δٕज़
Combination of Git flow and GitHub flow
DroidKaigi 2020
27
master
feature"/*
release!/*
Feature A Feature B
bugfix"/*
hotfix!/*
Slide 28
Slide 28 text
࣋ଓతͳΞϓϦ։ൃͷͨΊͷDXΛࢧ͑Δٕज़
Combination of Git flow and GitHub flow
DroidKaigi 2020
28
master
feature"/*
release!/*
Feature A Feature B
bugfix"/*
Bugfix Bugfix
v1.1.0
hotfix!/*
Slide 29
Slide 29 text
࣋ଓతͳΞϓϦ։ൃͷͨΊͷDXΛࢧ͑Δٕज़
Combination of Git flow and GitHub flow
DroidKaigi 2020
29
master
feature"/*
release!/*
Feature A Feature B
bugfix"/*
Bugfix Bugfix
hotfix!/*
v1.1.0
Bugfix
v1.1.1
Slide 30
Slide 30 text
Architecture
ઃܭ
DroidKaigi 2020
Slide 31
Slide 31 text
࣋ଓతͳΞϓϦ։ൃͷͨΊͷDXΛࢧ͑Δٕज़
ઃܭ: Architecture
▸ ઃܭΛߟ͑Δͱ͖ͷϙΠϯτΛ͑Δ
▸ ઃܭͷత
▸ ϢχοτςετͰ͔֬ΊΔ͜ͱ͕Β
▸ ઃܭΛॿ͚ΔϞδϡʔϧߏ
DroidKaigi 2020
31
Slide 32
Slide 32 text
࣋ଓతͳΞϓϦ։ൃͷͨΊͷDXΛࢧ͑Δٕज़
ઃܭ: Architecture
▸ ͲͷύλʔϯΛ࠾༻͢Δͷ͔
▸ MVVM
▸ MVP
▸ MVC
▸ MVI
DroidKaigi 2020
32
Slide 33
Slide 33 text
࣋ଓతͳΞϓϦ։ൃͷͨΊͷDXΛࢧ͑Δٕज़
ઃܭ: Architecture
▸ ͲͷύλʔϯΛ࠾༻͢Δͷ͔
▸ MVVM
▸ MVP
▸ MVC
▸ MVI
▸ ͍ͬͺ͍͋Δ
DroidKaigi 2020
33
Slide 34
Slide 34 text
࣋ଓతͳΞϓϦ։ൃͷͨΊͷDXΛࢧ͑Δٕज़
ઃܭ: Architecture
▸ ઃܭΛ͢Δత
▸ Ϋϥεϝιουʹదͳ໋໊Λͯ͠ɺؔ৺Λ͔Γ͘͢͢Δ
▸ ؔ৺Λͯ͠ɺϝϯςφϯεςετΛ͘͢͢͠Δ
DroidKaigi 2020
34
Slide 35
Slide 35 text
࣋ଓతͳΞϓϦ։ൃͷͨΊͷDXΛࢧ͑Δٕज़
ઃܭ: Architecture
▸ ϞόΠϧΞϓϦͷઃܭͰϑΥʔΧε͍ͨ͜͠ͱ
▸ API௨৴ϏδωεϩδοΫͳͲΛը໘ͷ࣮͔Β͏·͍ͨ͘͠
▸ ը໘͕ͭঢ়ଶͱͦͷભҠͷํ๏Λ͏·͘දݱ͍ͨ͠
▸ ঢ়ଶʹԠͨ͡ UI ͷߋ৽ϩδοΫΛΓ͍ͨ͠
▸ ͜ΕΒ͕Ϣχοτςετ͍͢͠ܗͰ࣮ݱͰ͖Δ͜ͱ
▸ ඞཁ࠷ݶͷϞοΫΛ४උ͢Δ͚ͩͰࡁ·͍ͤͨ
DroidKaigi 2020
35
Slide 36
Slide 36 text
࣋ଓతͳΞϓϦ։ൃͷͨΊͷDXΛࢧ͑Δٕज़
ઃܭ: Architecture
▸ ͏·͘ઃܭύλʔϯΛ͍͜ͳ͢ (ྫ)
▸ UIɺϏδωεϩδοΫɺAPI ௨৴ͳͲϨΠϠʔΛ͏·͍ͨ͘͠
➡ ϨΠϠʔυΞʔΩςΫνϟɺΫϦʔϯΞʔΩςΫνϟ
▸ UI ͕ͭঢ়ଶͱͦͷભҠΛ͏·͘දݱ͍ͨ͠
➡ ReduxɺFluxɺ͋Δ͍ LiveData ʹΑΔঢ়ଶભҠͷ௨
▸ UI ͷૢ࡞Λೖྗͱͯ͠ϏδωεϩδοΫΛಈ͔͠ɺͦͷ݁ՌΛ͏·͘ UI ʹө͍ͨ͠
➡ MVVMɺDataBindingɺ͋Δ͍؆୯ͳҕৡύλʔϯ
DroidKaigi 2020
36
Slide 37
Slide 37 text
࣋ଓతͳΞϓϦ։ൃͷͨΊͷDXΛࢧ͑Δٕज़
UI ͷঢ়ଶͱͦͷભҠΛ͏·͘දݱ͢Δ: Implement UI state machine
▸ Έͱ࣮ͯ͠ʹམͱ͠ࠐΜͩͷ
▸ ReduxɺFlux
▸ ঢ়ଶΛද͢ΦϒδΣΫτ: State
▸ ঢ়ଶભҠͷ͖͔͚ͬΛͭ͘ΔΦϒδΣΫτ: Action
▸ ঢ়ଶભҠͷৄࡉΛ࣮͢Δ: Reducer (Redux)ɺStore (Flux)
DroidKaigi 2020
37
Slide 38
Slide 38 text
࣋ଓతͳΞϓϦ։ൃͷͨΊͷDXΛࢧ͑Δٕज़
UI ͷঢ়ଶͱͦͷભҠΛ͏·͘දݱ͢Δ: Implement UI state machine
▸ Redux Flux ͷߟ͑ํΛ LiveData + ViewModel Ͱ༻ͯ͠ΈΔ
▸ ঢ়ଶΛද͢ΦϒδΣΫτ: State
▸ LiveData Ͱ State ͷมߋΛ௨
▸ ViewModel State ͷભҠํ๏Λఆٛͨ͠ϝιουΛ࣋ͭ
DroidKaigi 2020
38
Slide 39
Slide 39 text
࣋ଓతͳΞϓϦ։ൃͷͨΊͷDXΛࢧ͑Δٕज़
UI ͷঢ়ଶͱͦͷભҠΛ͏·͘දݱ͢Δ: Implement UI state machine
▸ ঢ়ଶΛද͢ΦϒδΣΫτͷઃܭ
▸ ඇಉظॲཧͷॲཧதɾޭɾࣦഊͷදݱ
▸ Either Λ͏গ֦͠ுͨ͠ sealed class ʹΑΔදݱ
▸ ॳظঢ়ଶɾॲཧதɾޭɾࣦഊΛද͢
▸ RemoteDataK / Kotlin ͷ sealed class Λ͍͜ͳ͢ by kikuchy
DroidKaigi 2020
39
Slide 40
Slide 40 text
࣋ଓతͳΞϓϦ։ൃͷͨΊͷDXΛࢧ͑Δٕज़
UI ͷঢ়ଶͱͦͷભҠΛ͏·͘දݱ͢Δ: Implement UI state machine
▸ ঢ়ଶΛද͢ΦϒδΣΫτͷઃܭ
▸ UI Ͱඞཁͳσʔλܕͷม
▸ API Ϩεϙϯεͷܕ͕ͦͷ··ը໘࣮ʹͯ·ΔͱݶΒͳ͍
▸ ϨΠϠʹ߹ΘͤͨܕͷίϯόʔτΛͯ͋͛͠Δ
▸ e.g. ෳͷ API ϨεϙϯεΛΈ߹Θͤͯ UI ʹө͢Δ
➡ ෳͷ API ϨεϙϯεΛ߹ͨ͠ܕΛ࡞Δ
DroidKaigi 2020
40
Slide 41
Slide 41 text
࣋ଓతͳΞϓϦ։ൃͷͨΊͷDXΛࢧ͑Δٕज़
UI ͷঢ়ଶͱͦͷભҠΛ͏·͘දݱ͢Δ: Implement UI state machine
▸ ঢ়ଶΛද͢ΦϒδΣΫτͷઃܭ
▸ ྫ֎ͷऔΓѻ͍
▸ ϓϩάϥϛϯάͷϛεʹΑΔͷ: ແཧʹ catch ͠ͳ͍
▸ I/O ͷࣦഊ: ࣦഊͨ͠ཧ༝Λઆ໌͢ΔΦϒδΣΫτʹม
▸ see also: ந֓೦ʹదͨ͠ྫ֎Λεϩʔ͢Δ
(Effective Java 3rd Edition: Item 73)
DroidKaigi 2020
41
Slide 42
Slide 42 text
࣋ଓతͳΞϓϦ։ൃͷͨΊͷDXΛࢧ͑Δٕज़
UI ͷঢ়ଶͱͦͷભҠΛ͏·͘දݱ͢Δ: Implement UI state machine
data class SampleViewState(
"// RemoteData: sealed type describing data loading state
"// Initial/Loading/Success/Failure
val apiData: RemoteData = Initial
"// ……
)
Slide 43
Slide 43 text
࣋ଓతͳΞϓϦ։ൃͷͨΊͷDXΛࢧ͑Δٕज़
UI ͷঢ়ଶͱͦͷભҠΛ͏·͘දݱ͢Δ: Implement UI state machine
class SampleViewModel(
private val dataSource: SampleDataSource
) : ViewModel() {
"// never allow others to mutate the state
private val viewStatePublisher: MutableLiveData =
MutableLiveData(SampleViewState())
val viewState: LiveData = viewStatePublisher
fun loadData() {
"// …… implement state changes
"// …… start loading, subscribe result from data source, emit success or failure
}
}
Slide 44
Slide 44 text
࣋ଓతͳΞϓϦ։ൃͷͨΊͷDXΛࢧ͑Δٕज़
UI ͷঢ়ଶͱͦͷભҠΛ͏·͘දݱ͢Δ: Implement UI state machine
class SampleViewModel(private val dataSource: SampleDataSource) : ViewModel() {
private val viewStatePublisher: MutableLiveData =
MutableLiveData(SampleViewState())
fun loadData() {
viewStatePublisher.value"?.let { state "->
"// notify apiData becomes loading
viewStatePublisher.value = state.copy(apiData = Loading())
}
}
}
Slide 45
Slide 45 text
࣋ଓతͳΞϓϦ։ൃͷͨΊͷDXΛࢧ͑Δٕज़
UI ͷঢ়ଶͱͦͷભҠΛ͏·͘දݱ͢Δ: Implement UI state machine
class SampleViewModel(private val dataSource: SampleDataSource) : ViewModel() {
fun loadData() {
"// ……
dataSource.loadApiData()
.observeOn(AndroidSchedulers.mainThread())
.subscribe({ data "->
viewStatePublisher.value"?.let { state "->
"// notify apiData successfully loaded
viewStatePublisher.value = state.copy(apiData = Success(data))
}
}, { exception "->
viewStatePublisher.value"?.let { state "->
"// notify apiData loading failed
viewStatePublisher.value = state.copy(apiData = Failure(exception))
}
})
}
}
Slide 46
Slide 46 text
࣋ଓతͳΞϓϦ։ൃͷͨΊͷDXΛࢧ͑Δٕज़
UI ͷঢ়ଶͱͦͷભҠΛ͏·͘දݱ͢Δ: Implement UI state machine
class SampleFragment : Fragment() {
private lateinit var viewModel: SampleViewModel
override fun onCreate(savedInstanceState: Bundle?) {
"// ……
viewModel.loadData()
viewModel.viewState.observe(this, Observer { state "->
when (it) {
is Loading "-> "// show loading view
is Success "-> "// apply data to UI
is Failure "-> "// show error message
}
})
}
}
Slide 47
Slide 47 text
࣋ଓతͳΞϓϦ։ൃͷͨΊͷDXΛࢧ͑Δٕज़
ςετ: Test
▸ State ͷঢ়ଶભҠΛςετ͢Δ߹
▸ ͋Δೖྗʹର͠ɺظͨ͠௨Γͷ State ͕ग़ྗ͞ΕΔ͜ͱ
▸ State ͷมԽͷॱ൪͕कΒΕ͍ͯΔ͜ͱ
▸ Initial → Loading → Success or Failure
DroidKaigi 2020
47
Slide 48
Slide 48 text
࣋ଓతͳΞϓϦ։ൃͷͨΊͷDXΛࢧ͑Δٕज़
UI ͷঢ়ଶભҠͷςετ: Unit Test for UI state machine
class SampleViewModel(private val dataSource: SampleDataSource) : ViewModel() {
private val viewStatePublisher: MutableLiveData = MutableLiveData(SampleViewState())
val viewState: LiveData = viewStatePublisher
fun startLoading() {
viewStatePublisher.value"?.let { state "->
"// notify apiData becomes loading
viewStatePublisher.value = state.copy(apiData = Loading())
}
dataSource.loadApiData()
.observeOn(AndroidSchedulers.mainThread())
.subscribe({ data "->
viewStatePublisher.value"?.let { state "->
"// notify apiData successfully loaded
viewStatePublisher.value = state.copy(apiData = Success(data))
}
}, { exception "->
viewStatePublisher.value"?.let { state "->
"// notify apiData loading failed
viewStatePublisher.value = state.copy(apiData = Failure(exception))
}
})
}
}
Slide 49
Slide 49 text
࣋ଓతͳΞϓϦ։ൃͷͨΊͷDXΛࢧ͑Δٕज़
UI ͷঢ়ଶભҠͷςετ: Unit Test for UI state machine
class SampleViewModel(private val dataSource: SampleDataSource) : ViewModel() {
private val viewStatePublisher: MutableLiveData = MutableLiveData(SampleViewState())
val viewState: LiveData = viewStatePublisher
fun startLoading() {
viewStatePublisher.value"?.let { state "->
"// notify apiData becomes loading
viewStatePublisher.value = state.copy(apiData = Loading())
}
dataSource.loadApiData()
.observeOn(AndroidSchedulers.mainThread())
.subscribe({ data "->
viewStatePublisher.value"?.let { state "->
"// notify apiData successfully loaded
viewStatePublisher.value = state.copy(apiData = Success(data))
}
}, { exception "->
viewStatePublisher.value"?.let { state "->
"// notify apiData loading failed
viewStatePublisher.value = state.copy(apiData = Failure(exception))
}
})
}
}
Observed as
1st value
Slide 50
Slide 50 text
࣋ଓతͳΞϓϦ։ൃͷͨΊͷDXΛࢧ͑Δٕज़
UI ͷঢ়ଶભҠͷςετ: Unit Test for UI state machine
class SampleViewModel(private val dataSource: SampleDataSource) : ViewModel() {
private val viewStatePublisher: MutableLiveData = MutableLiveData(SampleViewState())
val viewState: LiveData = viewStatePublisher
fun startLoading() {
viewStatePublisher.value"?.let { state "->
"// notify apiData becomes loading
viewStatePublisher.value = state.copy(apiData = Loading())
}
dataSource.loadApiData()
.observeOn(AndroidSchedulers.mainThread())
.subscribe({ data "->
viewStatePublisher.value"?.let { state "->
"// notify apiData successfully loaded
viewStatePublisher.value = state.copy(apiData = Success(data))
}
}, { exception "->
viewStatePublisher.value"?.let { state "->
"// notify apiData loading failed
viewStatePublisher.value = state.copy(apiData = Failure(exception))
}
})
}
}
Observed as
2nd value
Slide 51
Slide 51 text
࣋ଓతͳΞϓϦ։ൃͷͨΊͷDXΛࢧ͑Δٕज़
UI ͷঢ়ଶભҠͷςετ: Unit Test for UI state machine
class SampleViewModel(private val dataSource: SampleDataSource) : ViewModel() {
private val viewStatePublisher: MutableLiveData = MutableLiveData(SampleViewState())
val viewState: LiveData = viewStatePublisher
fun startLoading() {
viewStatePublisher.value"?.let { state "->
"// notify apiData becomes loading
viewStatePublisher.value = state.copy(apiData = Loading())
}
dataSource.loadApiData()
.observeOn(AndroidSchedulers.mainThread())
.subscribe({ data "->
viewStatePublisher.value"?.let { state "->
"// notify apiData successfully loaded
viewStatePublisher.value = state.copy(apiData = Success(data))
}
}, { exception "->
viewStatePublisher.value"?.let { state "->
"// notify apiData loading failed
viewStatePublisher.value = state.copy(apiData = Failure(exception))
}
})
}
}
Observed as
3rd value if success
Slide 52
Slide 52 text
࣋ଓతͳΞϓϦ։ൃͷͨΊͷDXΛࢧ͑Δٕज़
UI ͷঢ়ଶભҠͷςετ: Unit Test for UI state machine
class SampleViewModel(private val dataSource: SampleDataSource) : ViewModel() {
private val viewStatePublisher: MutableLiveData = MutableLiveData(SampleViewState())
val viewState: LiveData = viewStatePublisher
fun startLoading() {
viewStatePublisher.value"?.let { state "->
"// notify apiData becomes loading
viewStatePublisher.value = state.copy(apiData = Loading())
}
dataSource.loadApiData()
.observeOn(AndroidSchedulers.mainThread())
.subscribe({ data "->
viewStatePublisher.value"?.let { state "->
"// notify apiData successfully loaded
viewStatePublisher.value = state.copy(apiData = Success(data))
}
}, { exception "->
viewStatePublisher.value"?.let { state "->
"// notify apiData loading failed
viewStatePublisher.value = state.copy(apiData = Failure(exception))
}
})
}
}
Observed as
3rd value if error
Slide 53
Slide 53 text
࣋ଓతͳΞϓϦ։ൃͷͨΊͷDXΛࢧ͑Δٕज़
UI ͷঢ়ଶભҠͷςετ: Unit Test for UI state machine
class SampleViewModelTest : Spek({
beforeEachTest {
RxAndroidPlugins.setMainThreadSchedulerHandler { Scheduler.trampoline() }
ArchTaskExecutor.getInstance().setDelegate(TestExecutor())
}
afterEachTest {
RxAndroidPlugins.reset()
ArchTaskExecutor.getInstance().setDelegate(null)
}
})
class TestExecutor : TaskExecutor() {
override fun executeOnDiskIO(runnable: Runnable) { runnable.run() }
override fun isMainThread(): Boolean = true
override fun postToMainThread(runnable: Runnable) { runnable.run() }
}
Slide 54
Slide 54 text
࣋ଓతͳΞϓϦ։ൃͷͨΊͷDXΛࢧ͑Δٕज़
UI ͷঢ়ଶભҠͷςετ: Unit Test for UI state machine
class SampleViewModelTest : Spek({
Feature("SampleViewModel#startLoading") {
val dataSource: SampleDataSource by memoized(CachingMode.EACH_GROUP) {
mockk(relaxed = true)
}
Scenario("Load data successfully") {
"// Test cases verifying state changes in successful scenario
}
Scenario("Load data unsuccessfully") {
"// Test cases verifying state changes in failure scenario
}
}
})
Slide 55
Slide 55 text
࣋ଓతͳΞϓϦ։ൃͷͨΊͷDXΛࢧ͑Δٕज़
UI ͷঢ়ଶભҠͷςετ: Unit Test for UI state machine
class SampleViewModelTest : Spek({
Scenario("Load data successfully") {
lateinit var viewModel: SampleViewModel
lateinit var observer: Observer
lateinit var changedStateSlot: CapturingSlot
Given("ViewModel with initial state and state observer") {
changedStateSlot = slot()
observer = mockk(relaxed = true) {
every { onChanged(capture(changedStateSlot)) } just Runs
}
every { dataSource.loadApiData() } returns Observable.just("foo")
viewModel = NotificationViewModel(dataSource)
}
}
})
Slide 56
Slide 56 text
࣋ଓతͳΞϓϦ։ൃͷͨΊͷDXΛࢧ͑Δٕज़
UI ͷঢ়ଶભҠͷςετ: Unit Test for UI state machine
class SampleViewModelTest : Spek({
When("Start observing states") {
viewModel.viewState.observeForever(observer)
}
And("Start loading") {
viewModel.startLoading()
}
Then("State changes observed in the specified order") {
verifyOrder {
observer.onChanged(eq(SampleViewState(apiData = Initial)))
observer.onChanged(eq(SampleViewState(apiData = Loading())))
observer.onChanged(eq(SampleViewState(apiData = Success("foo"))))
}
}
})
Slide 57
Slide 57 text
࣋ଓతͳΞϓϦ։ൃͷͨΊͷDXΛࢧ͑Δٕज़
UI ͷঢ়ଶભҠͷςετ: Unit Test for UI state machine
class SampleViewModelTest : Spek({
When("Start observing states") {
viewModel.viewState.observeForever(observer)
}
And("Start loading") {
viewModel.startLoading()
}
Then("State changes observed in the specified order") {
verifyOrder {
observer.onChanged(eq(SampleViewState(apiData = Initial)))
observer.onChanged(eq(SampleViewState(apiData = Loading())))
observer.onChanged(eq(SampleViewState(apiData = Success("foo"))))
}
}
})
Slide 58
Slide 58 text
࣋ଓతͳΞϓϦ։ൃͷͨΊͷDXΛࢧ͑Δٕज़
Ϟδϡʔϧߏͱ໋໊نଇ: Module structure and naming convention
▸ γϯάϧϞδϡʔϧ
▸ ϚϧνϞδϡʔϧ
▸ Dynamic Feature Modules
DroidKaigi 2020
58
Slide 59
Slide 59 text
࣋ଓతͳΞϓϦ։ൃͷͨΊͷDXΛࢧ͑Δٕज़
γϯάϧϞδϡʔϧ: Single module
▸ apk Λੜ͢ΔϞδϡʔϧʹ͕ͯ͋͢Δ
▸ Pros
▸ ߏͷ͜ͱͰ·ͳͯ͘ࡁΉ
▸ Cons
▸ ϏϧυΛ্͛ͨ͘ͳͬͨͱ͖ʹɺGradle ͷ͘͠ΈͷԸܙΛड͚ͮΒ͍
▸ Ͳͷύοέʔδ༰қʹࢀরՄೳͳͨΊɺҙਤ͠ͳ͍ґଘؔΛ࡞Γ͍͢
DroidKaigi 2020
59
Slide 60
Slide 60 text
࣋ଓతͳΞϓϦ։ൃͷͨΊͷDXΛࢧ͑Δٕज़
ϚϧνϞδϡʔϧ: Multiple modules
▸ ϞδϡʔϧΛෳʹ͠ɺapk Λੜ͢ΔϞδϡʔϧ͕ͯ͢Λू͢Δ
▸ Pros
▸ Ϟδϡʔϧͷ໋໊ʹΑׂͬͯΛ໌ࣔͰ͖Δ
▸ Gradle ͷΈͰϏϧυΛ্͍͛͢
▸ Cons
▸ Ϟδϡʔϧͷํ๏ʹڞ௨ೝ͕ࣝඞཁ
DroidKaigi 2020
60
Slide 61
Slide 61 text
࣋ଓతͳΞϓϦ։ൃͷͨΊͷDXΛࢧ͑Δٕज़
μΠφϛοΫϑΟʔνϟʔϞδϡʔϧ: Dynamic Feature Modules
▸ Dynamic Delivery Λ͢ΔͳΒඞਢ
▸ Pros
▸ ϚϧνϞδϡʔϧ͕ڧ੍ʹͳΔͷͰɺಉ͡ϝϦοτΛಘΒΕΔ
▸ Play Store Ͱ͢ΔΞϓϦͷαΠζΛখ͘͞Ͱ͖Δ
▸ Cons
▸ Ϟδϡʔϧͷํ๏ʹڞ௨ೝ͕ࣝඞཁ
DroidKaigi 2020
61
Slide 62
Slide 62 text
࣋ଓతͳΞϓϦ։ൃͷͨΊͷDXΛࢧ͑Δٕज़
Ϟδϡʔϧͷׂํ๏: Modularization strategy
▸ Ͳ͏͍͏୯ҐͰϞδϡʔϧΛͭ͘Δͷ͔ܾΊ͓ͯ͘
▸ ϨΠϠʔυΞʔΩςΫνϟͷͰׂ
▸ ػೳ͝ͱʹׂ
▸ ͜ΕΒͷΈ߹Θͤ
DroidKaigi 2020
62
Slide 63
Slide 63 text
࣋ଓతͳΞϓϦ։ൃͷͨΊͷDXΛࢧ͑Δٕज़
Ϟδϡʔϧͷ໋໊: Naming convention for module
▸ Ϟδϡʔϧׂͷ୯ҐʹԠ໋໊ͨ͡نଇΛ࡞͓ͬͯ͘
▸ ΞϓϦέʔγϣϯຊମ: app
▸ ֤छػೳͷ UI ࣮: feature_**
▸ Ϣʔεέʔε: usecase_**
▸ σʔλΞΫηε: repository_**
▸ ڞ௨ॲཧ: common_**
DroidKaigi 2020
63
Slide 64
Slide 64 text
࣋ଓతͳΞϓϦ։ൃͷͨΊͷDXΛࢧ͑Δٕज़
Ϟδϡʔϧͷґଘؔ: Dependencies between modules
DroidKaigi 2020
64
feature_a
repository_a
usecase_a
feature_b
usecase_b
repository_b
feature_b
usecase_c
repository_c
Slide 65
Slide 65 text
࣋ଓతͳΞϓϦ։ൃͷͨΊͷDXΛࢧ͑Δٕज़
Ϟδϡʔϧͷґଘؔ: Dependencies between modules
DroidKaigi 2020
65
feature_a
repository_a
usecase_a
feature_b
usecase_b
repository_b
feature_b
usecase_c
repository_c
Slide 66
Slide 66 text
࣋ଓతͳΞϓϦ։ൃͷͨΊͷDXΛࢧ͑Δٕज़
Ϟδϡʔϧͷґଘؔ: Dependencies between modules
DroidKaigi 2020
66
feature_a
repository_a
usecase_a
feature_b
usecase_b
repository_b
feature_b
usecase_c
repository_c
Slide 67
Slide 67 text
Development Process
։ൃϓϩηε
DroidKaigi 2020
Slide 68
Slide 68 text
࣋ଓతͳΞϓϦ։ൃͷͨΊͷDXΛࢧ͑Δٕज़
։ൃϓϩηε: Development Process
▸ ʑͷ։ൃϓϩηεΛεϜʔζʹճ͠ଓ͚ΔͨΊͷऔΓΈ
▸ ຊʹਓͷྗΛඞཁͱ͢Δॴʹਓ͕ूதͯ͠औΓΊΔΑ͏ʹ͢Δ
▸ খ͞ͳࣦഊʹૉૣ͘ؾ͚ΔΈΛ࡞Δ
▸ ٕज़తͳϑΟʔυόοΫϧʔϓΛ࡞Δ
▸ ࣋ଓతʹऔΓΈΛճ͍ͯ͘͠ΈΛ࡞Δ
▸ ࣗಈԽʂ
DroidKaigi 2020
68
Slide 69
Slide 69 text
࣋ଓతͳΞϓϦ։ൃͷͨΊͷDXΛࢧ͑Δٕज़
ࣗಈԽ: Automation
▸ ࣗಈԽ͢Δͱ͖ʹߟྀ͢Δ͜ͱ
▸ ඞཁͳ͜ͱΛɺඞཁͳ͚࣮ͩߦ͢Δ͜ͱ
▸ ϏϧυͷՌΛ୭ͰΞΫηεͰ͖Δॴʹอଘ͓ͯ͘͜͠ͱ
▸ ϓϩδΣΫτͷͱڞʹεέʔϧ͍͚ͯ͠ΔΈͰ͋Δ͜ͱ
DroidKaigi 2020
69
Slide 70
Slide 70 text
࣋ଓతͳΞϓϦ։ൃͷͨΊͷDXΛࢧ͑Δٕज़
ࣗಈԽ: Automation
▸ CI (Continuous Integration) CD (Continuous Delivery)
▸ Ϗϧυ
▸ ςετ
▸ ੩తղੳ
▸ ΞϓϦͷ৴
▸ ʑͷϫʔΫϑϩʔ
DroidKaigi 2020
70
Slide 71
Slide 71 text
࣋ଓతͳΞϓϦ։ൃͷͨΊͷDXΛࢧ͑Δٕज़
ϏϧυͷࣗಈԽ: Build Automation
▸ ͕ࠩਖ਼͘͠ίϯύΠϧͰ͖Δ͜ͱΛอূ
▸ ΞϓϦέʔγϣϯͷ৴Λ͢ΔͨΊʹඞཁෆՄܽ
▸ ػೳ։ൃϒϥϯν: debug ϏϧυͷΈੜ
▸ master develop ͳͲ: release Ϗϧυੜ
DroidKaigi 2020
71
Slide 72
Slide 72 text
࣋ଓతͳΞϓϦ։ൃͷͨΊͷDXΛࢧ͑Δٕज़
ςετͷࣗಈԽ: Test Automation
▸ ͕ࠩςετͰ୲อͰ͖Δൣғʹ͓͍ͯਖ਼͘͠ಈ࡞͢Δ͜ͱΛอূ
▸ σάϨΛݕ͢ΔͨΊͷୈҰา
DroidKaigi 2020
72
Slide 73
Slide 73 text
࣋ଓతͳΞϓϦ։ൃͷͨΊͷDXΛࢧ͑Δٕज़
ςετͷࣗಈԽ: Test Automation
▸ ϓϩμΫτͷͱڞʹςετͷ࣮ߦ࣌ؒ૿͍͑ͯ͘
▸ ࣮ߦ࣌ؒΛ͘͢Δʹ…
▸ Gradle ͕͑ΔϓϩηεͱϞδϡʔϧΛ૿ͯ͠ฒྻੑΛ্͛Δ
▸ ςετ࣮ߦ༻ͷίϯςφΛෳ্ཱͪ͛ɺ࣮ߦ͢ΔςετΛࢄ͢Δ
▸ ࣌ؒʹґଘ͍ͯͯͭ͠ඞཁͷ͋ΔςετΛݮΒ͢
▸ etc……
DroidKaigi 2020
73
Slide 74
Slide 74 text
࣋ଓతͳΞϓϦ։ൃͷͨΊͷDXΛࢧ͑Δٕज़
ςετͷฒྻԽ: Parallelize unit test execution
DroidKaigi 2020
74
▸ CircleCI Ͱͷྫ
▸ ͻͱͭͷεςοϓͰෳͷίϯςφΛىಈ͢ΔΈΛ͏
▸ ෳͷίϯςφͰςετΛಉ࣌ʹ࣮ߦ͢Δ
▸ ͦΕͧΕͷίϯςφͰผͷςετΛ࣮ߦ͠ɺશମͰ͔͔Δ࣌ؒΛॖ͢Δ
Slide 75
Slide 75 text
࣋ଓతͳΞϓϦ։ൃͷͨΊͷDXΛࢧ͑Δٕज़
ςετͷฒྻԽ: Parallelize unit test execution
DroidKaigi 2020
75
Container 0 Container 1 Container 2 Container 3
:module_a:test
:module_b:test
……
:module_c:test
:module_d:test
……
:module_e:test
:module_f:test
……
:module_g:test
:module_h:test
……
Container 0
:module_a:test
:module_b:test
:module_c:test
:module_d:test
:module_e:test
:module_f:test
……
୯Ұίϯςφͷ߹
ෳίϯςφͷ߹
Slide 76
Slide 76 text
࣋ଓతͳΞϓϦ։ൃͷͨΊͷDXΛࢧ͑Δٕज़
ςετͷฒྻԽ: Parallelize unit test execution
DroidKaigi 2020
76
▸ ୯ҰϞδϡʔϧͷ߹
▸ CircleCI CLI Λ֤ͬͯίϯςφ͝ͱʹϑΝΠϧΛৼΓ͚Δ
circleci tests glob "**/test""/**"/*.kt" | circleci tests split
▸ ϑΝΠϧ໊ΛΫϥε໊ʹมͯ͋͛͠ΕɺGradle ͷύϥϝʔλʹͤΔ
▸ ෳϞδϡʔϧͷ߹
▸ ֤ίϯςφ͝ͱʹϞδϡʔϧΛৼΓ͚ΔॲཧΛࣗͰॻ͘
Slide 77
Slide 77 text
࣋ଓతͳΞϓϦ։ൃͷͨΊͷDXΛࢧ͑Δٕज़
ςετͷฒྻԽ: Parallelize unit test execution
"// The index number of container this execution is on.
val containerIndex = System.getenv("CIRCLE_NODE_INDEX")"?.toInt() "?: 0
"// Total number of containers running in parallel.
val totalContainer = System.getenv("CIRCLE_NODE_TOTAL")"?.toInt() "?: 0
"// Select modules to run unit tests on the container
val modules = project.subprojects
.withIndex()
.filter { it.index % totalContainer "== containerIndex }
.map { it.value }
"// Execute tests
modules.forEach { module "->
"./gradlew :${module.name}:test".runCommand()
}
DroidKaigi 2020
Slide 78
Slide 78 text
࣋ଓతͳΞϓϦ։ൃͷͨΊͷDXΛࢧ͑Δٕज़
੩తղੳͷࣗಈԽ: Static Analysis Automation
▸ ੩తղੳΛࣗಈԽ͠ίʔυϨϏϡʔʹཱͯΔ
▸ ಈ͔͢λΠϛϯά Pull Request ͕Ͱ͖ͨ࣌ͳͲ
▸ ੩తղੳͷ݁ՌΛϨϙʔτ͢Δ
▸ xml html ͷϨϙʔτϑΝΠϧ CI ͷՌͱଊ͑Δ
▸ Pull Request ͕͋ΕɺϨϙʔτͷ༰Λίϝϯτ͢Δ
DroidKaigi 2020
78
Slide 79
Slide 79 text
࣋ଓతͳΞϓϦ։ൃͷͨΊͷDXΛࢧ͑Δٕज़
৴ͷࣗಈԽ: Delivery Automation
▸ มߋΛ͍ͭͰࢼͤΔΑ͏ʹͯ͠ɺϓϩμΫτͷϑΟʔυόοΫϧʔϓΛ࡞Δ
▸ ΞϓϦέʔγϣϯͷϏϧυ͕ऴΘͬͨΒ৴
▸ Firebase App Distribution, DeployGate, HockeyApp, etc…
DroidKaigi 2020
79
Slide 80
Slide 80 text
࣋ଓతͳΞϓϦ։ൃͷͨΊͷDXΛࢧ͑Δٕज़
ϫʔΫϑϩʔͷࣗಈԽ: Automation
▸ ख࡞ۀͷखؒΛͳ͘͠ɺώϡʔϚϯΤϥʔͷ༨Λখ͘͢͞Δ
DroidKaigi 2020
80
Slide 81
Slide 81 text
࣋ଓతͳΞϓϦ։ൃͷͨΊͷDXΛࢧ͑Δٕज़
ϫʔΫϑϩʔͷࣗಈԽ: Automation
▸ e.g. QA ϑΣʔζͰͷόάमਖ਼Λ master ʹऔΓࠐΉ࡞ۀͷࣗಈԽ
▸ ϚʔδͷࠩΛখͯ͘͞͠ɺίϯϑϦΫτͷϦεΫΛԼ͛Δ
▸ e.g. release ϒϥϯνͷόάमਖ਼Λຖ master औΓࠐΉ
▸ e.g. master ϒϥϯνͷߋ৽Λຖ֤։ൃϒϥϯνऔΓࠐΉ
▸ ϒϥϯνઓུʹ߹Θ࣮ͤͯɾӡ༻͢Δ
DroidKaigi 2020
81
Slide 82
Slide 82 text
࣋ଓతͳΞϓϦ։ൃͷͨΊͷDXΛࢧ͑Δٕज़
ϫʔΫϑϩʔͷࣗಈԽ: Automation
▸ QA ϑΣʔζͰͷόάमਖ਼Λ master ʹऔΓࠐΉ࡞ۀͷࣗಈԽ
DroidKaigi 2020
82
master
release"/*
master
release"/*
releaseϒϥϯνӡ༻ͷ
࠷ޙʹϚʔδ͢Δ߹
releaseϒϥϯνΛఆظతʹ
ࣗಈͰϚʔδ͢Δ߹
Slide 83
Slide 83 text
࣋ଓతͳΞϓϦ։ൃͷͨΊͷDXΛࢧ͑Δٕज़
ϫʔΫϑϩʔͷࣗಈԽ: How to automate a workflow
▸ CLI ͰࣗಈԽͨ͠λεΫΛ࣮ߦͰ͖ΔΑ͏ʹ͢Δ
▸ Shell Script
▸ Gradle Custom Tasks
▸ etc…
DroidKaigi 2020
83
Slide 84
Slide 84 text
࣋ଓతͳΞϓϦ։ൃͷͨΊͷDXΛࢧ͑Δٕज़
Gradle Custom Tasks ʹΑΔࣗಈԽ: Automation with Gradle Custom Tasks
▸ Gradle Custom Tasks ͷ࡞Γํ
▸ project_root/buildSrc ϞδϡʔϧʹλεΫͷ࣮Λॻ͘
▸ project_root/build.gradle.kts ͰλεΫͷొΛ͢Δ
DroidKaigi 2020
84
Slide 85
Slide 85 text
࣋ଓతͳΞϓϦ։ൃͷͨΊͷDXΛࢧ͑Δٕज़
Gradle Custom Tasks ʹΑΔࣗಈԽ: Automation with Gradle Custom Tasks
"// buildSrc/build.gradle.kts
repositories {
jcenter()
}
plugins {
`kotlin-dsl`
`java-gradle-plugin`
}
dependencies {
implementation(gradleApi())
}
DroidKaigi 2020
Slide 86
Slide 86 text
࣋ଓతͳΞϓϦ։ൃͷͨΊͷDXΛࢧ͑Δٕज़
Gradle Custom Tasks ʹΑΔࣗಈԽ: Automation with Gradle Custom Tasks
"// buildSrc/src/main/kotlin/com/example/MyCustomTask.kt
open class MyCustomTask : DefaultTask() {
@Input lateinit var parameter: String
@TaskAction
fun doAction() {
"// … do your job!
}
}
DroidKaigi 2020
Slide 87
Slide 87 text
࣋ଓతͳΞϓϦ։ൃͷͨΊͷDXΛࢧ͑Δٕज़
Gradle Custom Tasks ʹΑΔࣗಈԽ: Automation with Gradle Custom Tasks
"// buildSrc/src/main/kotlin/com/example/MyCustomTask.kt
open class MyCustomTask : DefaultTask() {
@Input lateinit var parameter: String
@TaskAction
fun doAction() {
"// … do your job!
}
}
DroidKaigi 2020
Slide 88
Slide 88 text
࣋ଓతͳΞϓϦ։ൃͷͨΊͷDXΛࢧ͑Δٕज़
Gradle Custom Tasks ʹΑΔࣗಈԽ: Automation with Gradle Custom Tasks
"// buildSrc/src/main/kotlin/com/example/MyCustomTask.kt
open class MyCustomTask : DefaultTask() {
@Input lateinit var parameter: String
@TaskAction
fun doAction() {
"// … do your job!
}
}
DroidKaigi 2020
Slide 89
Slide 89 text
࣋ଓతͳΞϓϦ։ൃͷͨΊͷDXΛࢧ͑Δٕज़
Gradle Custom Tasks ʹΑΔࣗಈԽ: Automation with Gradle Custom Tasks
"// buildSrc/src/main/kotlin/com/example/MyCustomTask.kt
open class MyCustomTask : DefaultTask() {
@Input lateinit var parameter: String
@TaskAction
fun doAction() {
"// … do your job!
}
}
DroidKaigi 2020
Slide 90
Slide 90 text
࣋ଓతͳΞϓϦ։ൃͷͨΊͷDXΛࢧ͑Δٕज़
Gradle Custom Tasks ʹΑΔࣗಈԽ: Automation with Gradle Custom Tasks
"// build.gradle.kts in the project root
tasks.register("myTask") {
parameter = "Hello, World"
}
DroidKaigi 2020
Slide 91
Slide 91 text
࣋ଓతͳΞϓϦ։ൃͷͨΊͷDXΛࢧ͑Δٕज़
ίʔυϨϏϡʔ: Code Review
▸ ઃܭํ໋໊ͷΘ͔Γ͢͞ɺߟྀ࿙ΕνΣοΫʹਓͷྗΛूத͍ͨ͠
▸ ࣗಈԽͰ͖Δͱ͜ΖͲΜͲΜࣗಈԽ͢Δ
▸ ίʔσΟϯάنͷڞ༗: .editorconfig Λ࡞͓ͬͯ͘
▸ ίʔσΟϯάنʹै͍ͬͯΔ͔νΣοΫ: CI Ͱ ktlint ͳͲΛಈ͔͢
▸ Α͋͘Δؒҧ͍ΛνΣοΫ: CI Ͱ android lint ͳͲΛಈ͔͢
DroidKaigi 2020
91
Slide 92
Slide 92 text
࣋ଓతͳΞϓϦ։ൃͷͨΊͷDXΛࢧ͑Δٕज़
ίʔυϨϏϡʔ: Code Review
▸ υϝΠϯࣝΛ࣋ͬͨਓʹϨϏϡʔΛґཔ͠ɺίʔυϨϏϡʔͷ࣭Λ্͛Δ
▸ ͩΕʹϨϏϡʔͯ͠΄͍͔͠ઃఆ͢Δ
▸ CODEOWNERS
▸ σΟϨΫτϦ͝ͱʹઃఆ
▸ σΟϨΫτϦԼͷϑΝΠϧʹࠩΛ࡞ΔͱɺࣗಈͰઃఆͨ͠ਓ͕ϨϏϡϫʔ
ʹͳΔ
DroidKaigi 2020
92
Slide 93
Slide 93 text
࣋ଓతͳΞϓϦ։ൃͷͨΊͷDXΛࢧ͑Δٕज़
ίʔυϨϏϡʔ: Code Review
# KeithYokoma is the owner of Module A
/module_a/ @KeithYokoma
# Anyone in team_a can review changes in Module B
/module_b/ @team_a
# Either KeithYokoma or someone in team_a can review
/module_c/ @KeithYokoma @team_a
DroidKaigi 2020
Slide 94
Slide 94 text
࣋ଓతͳΞϓϦ։ൃͷͨΊͷDXΛࢧ͑Δٕज़
ίʔυϨϏϡʔ: Code Review
▸ ίʔυϨϏϡʔʹૉૣ͘औΓΜͰ։ൃαΠΫϧΛͳΊΒ͔ʹճ͢
▸ ίʔυϨϏϡʔͷϦΫΤετΛ௨͢Δ
▸ Pull Reminders
▸ ࣗѼͯʹ௨Λ͢Δ
▸ ಛఆͷνϟϯωϧͰɺApproval ͷͳ͍ Pull Request Λ௨͢Δ
DroidKaigi 2020
94
Slide 95
Slide 95 text
࣋ଓతͳΞϓϦ։ൃͷͨΊͷDXΛࢧ͑Δٕज़
ίʔυϨϏϡʔ: Code Review
▸ ίʔυϨϏϡʔʹૉૣ͘औΓΜͰ։ൃαΠΫϧΛͳΊΒ͔ʹճ͢
▸ Pull Request ͷઆ໌Λ͏·͘ॻ͘
▸ Ͳ͏͍͏తͷࠩͳͷ͔Λઆ໌ͯ͠΄͍͠
▸ ࠩΛಡΉ্Ͱͷલఏ͕ࣝ͋Εઆ໌ͯ͠΄͍͠
DroidKaigi 2020
95
Slide 96
Slide 96 text
࣋ଓతͳΞϓϦ։ൃͷͨΊͷDXΛࢧ͑Δٕज़
ίʔυϨϏϡʔ: Code Review
▸ νʔϜͰڞ௨ͷϑΥʔϚοτ͕͋Δͱॻ͖͘͢ͳΔ
▸ ςϯϓϨʔτͷ׆༻
▸ GitHub: .github/PULL_REQUEST_TEMPLATE.md
▸ GitLab: .gitlab/merge_request_templates/XXX.md
DroidKaigi 2020
96
Slide 97
Slide 97 text
࣋ଓతͳΞϓϦ։ൃͷͨΊͷDXΛࢧ͑Δٕज़
ςϯϓϨʔτྫ: Example of pull request template
"## Summary
"## Kind
"## Details
"## Links
- Task Ticket:
- Design Doc:
- Crashlytics Issue:
"## Screenshot
Before | After
:——:|:——:
![]()
|![]()
DroidKaigi 2020
Slide 98
Slide 98 text
Release
ϦϦʔε
DroidKaigi 2020
Slide 99
Slide 99 text
࣋ଓతͳΞϓϦ։ൃͷͨΊͷDXΛࢧ͑Δٕज़
ϦϦʔε: Release
▸ ҆શͳϦϦʔεΛࢧ͑ΔΈͮ͘Γ
▸ ϑΟʔνϟʔϑϥά
▸ ϦϦʔετϨΠϯ
▸ ϞχλϦϯά
DroidKaigi 2020
99
Slide 100
Slide 100 text
࣋ଓతͳΞϓϦ։ൃͷͨΊͷDXΛࢧ͑Δٕज़
ϑΟʔνϟʔϑϥά: Feature Flag
▸ ػೳͷग़͚͠Λίϯτϩʔϧͯ͠ૉૣ͍։ൃαΠΫϧΛอͭ
▸ ϑΟʔνϟʔϑϥάΛ͏໘
▸ ஈ֊తʹػೳΛެ։͍ͨ͠ͱ͖
▸ 1ͷϦϦʔεαΠΫϧΛ͑ͯػೳ։ൃΛ͍ͨ͠ͱ͖
DroidKaigi 2020
100
Slide 101
Slide 101 text
࣋ଓతͳΞϓϦ։ൃͷͨΊͷDXΛࢧ͑Δٕज़
ϑΟʔνϟʔϑϥάΛ͏ྫ: Example usage of Feature Flag
▸ ஈ֊తʹػೳΛެ։͍ͨ͠ͱ͖
▸ Firebase Remote Config ɺࣗલͷΈͳͲͰઃఆΛม͑Δ
▸ ༷ʑͳଐੑ͔ΒઃఆΛੜͰ͖Δ
▸ ৽͍͠ػೳͷ։ൃ͕ऴΘΓɺঃʑʹ։์͢Δͱ͖ʹ༗ޮ
DroidKaigi 2020
101
Slide 102
Slide 102 text
࣋ଓతͳΞϓϦ։ൃͷͨΊͷDXΛࢧ͑Δٕज़
ϑΟʔνϟʔϑϥάΛ͏ྫ: Example usage of Feature Flag
▸ 1ͷϦϦʔεαΠΫϧΛ͑ͯػೳ։ൃΛ͍ͨ͠ͱ͖
▸ Git ͷϒϥϯνΛࡉ͔͘࡞ͬͯϚʔδࠩ͠ΛੵΈ্͍͛ͯ͘
▸ ࣮ͷͰ։ൃ్தͷػೳΛݟ͑ͳ͍ɾ͑ͳ͍Α͏ʹ࠹͙
DroidKaigi 2020
102
master
Merge
Feature A-1 v1.1.0
Merge
Feature A-2 v1.2.0
Merge
Feature A-3 v1.2.1
Finalize
Feature A v1.3.0
Slide 103
Slide 103 text
࣋ଓతͳΞϓϦ։ൃͷͨΊͷDXΛࢧ͑Δٕज़
ϑΟʔνϟʔϑϥάΛ͏ྫ: Example usage of Feature Flag
▸ ࣮ͷͷํ
▸ BuildConfig ʹϑΟʔνϟʔϑϥάΛఆٛ͢Δ
▸ UI ͷͭͳ͗͜ΈΛ࠷ޙʹ࣮ࢪ
▸ ։ൃऀ͚ͷઃఆը໘Ͱ༗ޮɾແޮΛΓସ͑Δ
▸ etc…
DroidKaigi 2020
103
Slide 104
Slide 104 text
࣋ଓతͳΞϓϦ։ൃͷͨΊͷDXΛࢧ͑Δٕज़
ϑΟʔνϟʔϑϥάΛ͏ྫ: Example usage of Feature Flag
▸ BuildConfig ʹϑΟʔνϟʔϑϥάΛఆٛ͢Δ߹
▸ e.g. طଘը໘ʹ৽͍͠ػೳΛͬͨίϯϙʔωϯτΛՃ͢Δ࣮
DroidKaigi 2020
104
master
Merge
Feature A-1 v1.1.0
Merge
Feature A-2 v1.2.0
Merge
Feature A-3 v1.2.1
Finalize
Feature A v1.3.0
৽͍͠ػೳ͚ͷ
UI ίϯϙʔωϯτ࡞
৽͍͠ػೳͷ
Ϟσϧ࣮
Ϟσϧͱ UI ίϯϙʔωϯτ
Λͭͳ͗͜Ή
BuildConfig ͷϑϥάΛ
༗ޮԽ͢Δ
Slide 105
Slide 105 text
࣋ଓతͳΞϓϦ։ൃͷͨΊͷDXΛࢧ͑Δٕज़
ϑΟʔνϟʔϑϥάΛ͏ྫ: Example usage of Feature Flag
▸ UI ͷͭͳ͗ࠐΈΛ࠷ޙʹΔ߹
▸ e.g. ৽͍͠ػೳͷઃఆը໘Λ࡞ΓɺઃఆҰཡʹ߲Λ࣮͢
DroidKaigi 2020
105
master
Merge
Feature A-1 v1.1.0
Merge
Feature A-2 v1.2.0
Merge
Feature A-3 v1.2.1
Finalize
Feature A v1.3.0
͋ͨΒ͍͠ઃఆը໘ͷ
ϨΠΞτ࡞
͋ͨΒ͍͠ઃఆը໘ͷ
Ϟσϧ࣮
Ϟσϧͱը໘Λͭͳ͗͜Ή
ઃఆҰཡʹɺ৽͍͠ઃఆը໘
ͷಋઢΛ͢
Slide 106
Slide 106 text
࣋ଓతͳΞϓϦ։ൃͷͨΊͷDXΛࢧ͑Δٕज़
ϑΟʔνϟʔϑϥάͷҙ: Caveats of Feature Flag
▸ ϑΟʔνϟʔϑϥάͰͨ͠ػೳͷ։ൃ͕ଞͷطଘػೳʹӨڹΛ༩͑ͳ͍
DroidKaigi 2020
106
Existing Feature New Feature
Existing Logic New Logic
Shared Logic
Existing Feature New Feature
Slide 107
Slide 107 text
࣋ଓతͳΞϓϦ։ൃͷͨΊͷDXΛࢧ͑Δٕज़
ϑΟʔνϟʔϑϥάͷҙ: Caveats of Feature Flag
▸ "Release toggles are the last thing you should do" by Martin Fowler
▸ ϑϥάΛͭ͜ͱͷίετগͳ͔Βͣ͋Δ
▸ ༗ޮԽ͢ΔλΠϛϯά
▸ Θͳ͘ͳͬͨΒআ͢Δ
▸ ϑϥάΛ࣋ͭ΄͔ʹऔΓ͏Δબࢶ
▸ UI ͷͭͳ͗͜ΈΛ࠷ޙʹ͢Δ
▸ ػೳͦͷͷΛࡉ͔͘Θ͚ɺখ͘͞ϦϦʔε͢Δ
DroidKaigi 2020
107
Slide 108
Slide 108 text
࣋ଓతͳΞϓϦ։ൃͷͨΊͷDXΛࢧ͑Δٕज़
ϦϦʔετϨΠϯ: Release Train
▸ ϦϦʔεεέδϡʔϧΛݻఆͯ͠ܧଓతʹ҆શͳϦϦʔεΛ͢Δ
▸ ϦϦʔετϨΠϯӡ༻ͷେݪଇ
▸ ܾ·ͬͨεέδϡʔϧ͔Βٯࢉͯ͠։ൃΛ͍ͯ͘͠
▸ ؒʹ߹Θͳ͍ͷ࣍ͷϦϦʔεΛͭ
▸ نͷେ͖ͳ։ൃͳΒͰͷ՝ղܾํ๏
▸ ͨ͘͞ΜͷϓϩδΣΫτؒͷௐ͝ͱΛ͔Γ͍ͨ͘͢͠
DroidKaigi 2020
108
Slide 109
Slide 109 text
࣋ଓతͳΞϓϦ։ൃͷͨΊͷDXΛࢧ͑Δٕज़
ࢹମ੍: Metrics monitoring
▸ ૉૣ͘ҟৗʹؾ͖ͮɺૉૣ͘ରࡦΛଧͭ
▸ ҟৗͷछྨ
▸ ΞϓϦͷΫϥογϡ
▸ ྫ֎έʔεͷසൃ
▸ ϦάϨογϣϯͷൃੜ
▸ ύϑΥʔϚϯεͷྼԽ
DroidKaigi 2020
109
Slide 110
Slide 110 text
࣋ଓతͳΞϓϦ։ൃͷͨΊͷDXΛࢧ͑Δٕज़
ࢹମ੍: Metrics monitoring
▸ ΈͰղܾ: Crashlytics
▸ Ϋϥογϡ͕݅࣌ؒͰஶ͘͠৳ͼͨͱ͖ʹ௨͢Δ
DroidKaigi 2020
110
Slide 111
Slide 111 text
࣋ଓతͳΞϓϦ։ൃͷͨΊͷDXΛࢧ͑Δٕज़
ࢹମ੍: Metrics monitoring
▸ ΈͰղܾ: Crashlytics
▸ ΞϥʔτΛ Slack ʹߘ͢Δ
▸ ৽نͷΫϥογϡΛݕͨ͠Β
Issue Tracker ʹνέοτΛ࡞Δ
▸ etc…
DroidKaigi 2020
111
Slide 112
Slide 112 text
࣋ଓతͳΞϓϦ։ൃͷͨΊͷDXΛࢧ͑Δٕज़
ࢹମ੍: Metrics monitoring
▸ ΈͰղܾ: Crashlytics
▸ ΞϥʔτΛ Slack ʹߘ͢Δ
▸ ৽نͷΫϥογϡΛݕͨ͠Β
Issue Tracker ʹνέοτΛ࡞Δ
▸ etc…
DroidKaigi 2020
112
Slide 113
Slide 113 text
࣋ଓతͳΞϓϦ։ൃͷͨΊͷDXΛࢧ͑Δٕज़
ࢹମ੍: Metrics monitoring
▸ ͷཧղΛॿ͚Δϩάͷऔಘ
▸ ͲΜͳঢ়گԼͰ͓͖͔ͨ
▸ Ͳ͏͍͏ܦ࿏Ͱ͓͖͔ͨ
▸ σόΠε͝ͱͷ͋Δ͔
▸ ΞϓϦόʔδϣϯ͝ͱͷ͋Δ͔
▸ etc…
DroidKaigi 2020
113
Slide 114
Slide 114 text
࣋ଓతͳΞϓϦ։ൃͷͨΊͷDXΛࢧ͑Δٕज़
ϩΪϯάͷઃܭ: Log collection architecture
▸ e.g. Timber + Crashlytics
▸ ϩάΛు͖ͩ͢ϝιουΛ Timber ʹू
▸ Timber.d("debug log")
▸ Timber.i("info log")
▸ Timber.e(exception, "error log")
▸ ϩάΛు͘ϝιουݺͼग़͠ΛϑοΫͯ͠ Crashlytics Ͱूܭ
DroidKaigi 2020
114
Slide 115
Slide 115 text
࣋ଓతͳΞϓϦ։ൃͷͨΊͷDXΛࢧ͑Δٕज़
ϩΪϯάͷઃܭ: Log collection architecture
class CrashlyticsTree : Timber.Tree() {
override fun log(priority: Int, tag: String?, message: String, throwable: Throwable?) {
when (priority) {
Log.INFO "-> Crashlytics.log(priority, tag, message)
Log.WARN "-> Crashlytics.log(priority, tag, message)
Log.ERROR "-> {
Crashlytics.log(priority, tag, message)
throwable"?.let {
Crashlytics.logException(it)
}
}
}
}
}
DroidKaigi 2020
Slide 116
Slide 116 text
࣋ଓతͳΞϓϦ։ൃͷͨΊͷDXΛࢧ͑Δٕज़
ϩΪϯάͷઃܭ: Log collection architecture
class CrashlyticsTree : Timber.Tree() {
override fun log(priority: Int, tag: String?, message: String, throwable: Throwable?) {
when (priority) {
Log.INFO "-> Crashlytics.log(priority, tag, message)
Log.WARN "-> Crashlytics.log(priority, tag, message)
Log.ERROR "-> {
Crashlytics.log(priority, tag, message)
throwable"?.let {
Crashlytics.logException(it)
}
}
}
}
}
DroidKaigi 2020
Slide 117
Slide 117 text
࣋ଓతͳΞϓϦ։ൃͷͨΊͷDXΛࢧ͑Δٕज़
ΧελϜΩʔͷՃ: Adding custom keys
▸ Crashlytics ͷϨϙʔτʹՃใΛ༩͢Δ͘͠Έ
▸ ΞϓϦͷ࣋ͭઃఆ
▸ e.g. XXX ͷػೳ͕༗ޮ͔Ͳ͏͔
▸ Ϣʔβͷঢ়ଶ
▸ e.g. YYY ͷνϡʔτϦΞϧऴΘ͔ͬͨͲ͏͔
DroidKaigi 2020
117
Slide 118
Slide 118 text
࣋ଓతͳΞϓϦ։ൃͷͨΊͷDXΛࢧ͑Δٕज़
ΧελϜΩʔͷՃ: Adding custom keys
class SettingsFragment : PreferenceFragmentCompat() {
override fun onCreatePreferences(
savedState: Bundle?,
rootKey: String?
) {
setPreferencesFromResource(R.xml.pref, rootKey)
val notificationPreference = findPreference("enable_notification")
notificationPreference"?.setOnPreferenceChangeListener { _, newValue "->
"// Put a custom key for preference value
Crashlytics.setBool("enable_notification", newValue)
true
}
}
}
DroidKaigi 2020
Slide 119
Slide 119 text
࣋ଓతͳΞϓϦ։ൃͷͨΊͷDXΛࢧ͑Δٕज़
ΧελϜΩʔͷՃ: Adding custom keys
class SettingsFragment : PreferenceFragmentCompat() {
override fun onCreatePreferences(
savedState: Bundle?,
rootKey: String?
) {
setPreferencesFromResource(R.xml.pref, rootKey)
val notificationPreference = findPreference("enable_notification")
notificationPreference"?.setOnPreferenceChangeListener { _, newValue "->
"// Put a custom key for preference value
Crashlytics.setBool("enable_notification", newValue)
true
}
}
}
DroidKaigi 2020
Slide 120
Slide 120 text
࣋ଓతͳΞϓϦ։ൃͷͨΊͷDXΛࢧ͑Δٕज़
ΧελϜΩʔͷՃ: Adding custom keys
DroidKaigi 2020
120
Slide 121
Slide 121 text
Wrap up
·ͱΊ
DroidKaigi 2020
Slide 122
Slide 122 text
࣋ଓతͳΞϓϦ։ൃͷͨΊͷDXΛࢧ͑Δٕज़
·ͱΊ: Wrap up
▸ DX Λܧଓతʹվળ͍ͯ͘͜͠ͱͰ…
▸ ૉૣ͍ػೳ࣮͕͘͢͠ͳΔ
▸ ૉૣ͍ৼΓฦΓ͕͘͢͠ͳΔ
▸ ͦͷ݁ՌɺνʔϜϓϩμΫτ͙Μ͙Μ͍ͯ͘͠
▸ ܧଓྗͳΓ
DroidKaigi 2020
122
Slide 123
Slide 123 text
࣋ଓతͳΞϓϦ։ൃͷͨΊͷDXΛࢧ͑Δٕज़
·ͱΊ: Wrap up
▸ ࣋ଓతͳΞϓϦ։ൃͷͨΊͷDXΛࢧ͑ΔྖҬ
▸ ࣄલ४උ
▸ ઃܭ
▸ ։ൃϓϩηε
▸ ϦϦʔε
DroidKaigi 2020
123
Slide 124
Slide 124 text
࣋ଓతͳΞϓϦ։ൃͷͨΊͷDXΛࢧ͑Δٕज़
͍͞͝ʹ: Wrap up
▸ ͏Γ࢝Ί͍ͯΔϓϩδΣΫτͰ DX Λվળ͢Δʹ…
▸ ݱঢ়ੳΛͯ͠νʔϜͷઢΛ߹ΘͤΔ
▸ KPT ͰఆੑతʹνʔϜͷߟ͑Λ·ͱΊͯΈΔ
▸ ςετΧόϨοδܯࠂͷਪҠͳͲΛͬͯఆྔతʹ࣭ΛଌͬͯΈΔ
▸ ՝ײΛἧ͑ΔͱɺԿ͔ΒऔΓΉͱΑ͍͔͔Γ͘͢ͳΔ
DroidKaigi 2020
124
Slide 125
Slide 125 text
࣋ଓతͳΞϓϦ։ൃͷͨΊͷ
DXΛࢧ͑Δٕज़
KeithYokoma (Keishin Yokomaku) /
DroidKaigi 2020