Scalaで学ぶヘキサゴナルアーキテクチャ実践入門

「Scala将軍達の後の祭り」での発表資料

http://scala-syogun-matsuri.connpass.com/event/28124/

1. ScalaͰֶͿϔΩαΰφϧΞʔΩςΫ νϟ࣮ફೖ໳ ! Scalaক܉ୡͷޙͷࡇΓ @kimutyam 2016/03/26
2. ࣗݾ঺հ ! ! ໦ଜজ޺ @kimutyam 2012/4ʹηϓςʔχೖࣾ ηϓςʔχɾΦϦδφϧͷϦʔυΤϯδχΞΛ୲౰ͯ͠·͢ 1೥લ͔Β޿ࠂͷӡ༻؅ཧπʔϧʮPYXISʯͷ։ൃΛ΍ͬͯ·͢ @j5ik2oʹࢣࣄͯ͠ɺScala/DDDΛ1೥൒͘Β͍࣮ફ͖ͯͨ͠ਓ ! ڵຯൣғ DDD TDD ϔΩαΰφϧΞʔΩςΫνϟ ϚΠΫϩαʔϏεΞʔΩςΫνϟ
3. ScalaͷαϯϓϧΛݩʹ࣮ફతͳϔΩαΰφϧ ΞʔΩςΫνϟͷ૊Ήํʹ͍͓ͭͯ࿩͠·͢
4. Agenda 1. ϨΠϠʔυΞʔΩςΫνϟ͔ΒϔΩαΰφϧΞʔ ΩςΫνϟ΁ 2. ϔΩαΰφϧΞʔΩςΫνϟ֓ཁ 3. ฐࣾͰͷιϑτ΢ΣΞઓུ
5. 1.ϨΠϠʔυΞʔΩςΫνϟ͔Βϔ ΩαΰφϧΞʔΩςΫνϟ΁
6. Layered Architecture֓೦ਤ UI Application Domain Infrastructure Dependency
7. Layered Architecture֓೦ਤ UI Application Domain Infrastructure Dependency • υϝΠϯ͕Πϯϑϥ ετϥΫνϟʹґଘ ͍ͯ͠Δ
8. ͦ΋ͦ΋ΠϯϑϥετϥΫνϟ૚ͬ ͯʁ >্ҐͷϨΠϠΛࢧ͑ΔҰൠతͳٕज़తػೳΛఏڙ͢Δɻ ͜Εʹ͸ɺΞϓϦέʔγϣϯͷͨΊͷϝοηʔδૹ৴ɺ υϝΠϯͷͨΊͷӬଓԽɺϢʔβʔΠϯλʔϑΣʔεͷͨΊͷ΢Ο δΣοτඳըͳͲ͕͋Δɻ ΤϦοΫɾΤϰΝϯεͷυϝΠϯۦಈઃܭ http://urx.blue/sP9d ͦͷଞͷҰൠతͳٕज़తػೳͱ͸ʁ(ࢲతݟղ) • ݴޠ • ϢʔςΟϦςΟ • ϥΠϒϥϦ etc….
9. υϝΠϯ૚͕ΠϯϑϥετϥΫνϟ ૚ʹґଘ͢Δ͜ͱ͸֐ѱʁ ۃ୺ͳ࿩ɺྫ͑͹ϝοηʔδૹ৴ɺӬଓԽɺ ϢʔβʔΠϯλʔϑΣʔεͷͨΊͷ΢ΟδΣοτඳը ʹ͍ͭͯཁ݅తͰมߋͷͳ͍ٕज़ج൫Ͱ͋Ε͹ґଘͯ͠΋Α͍ɻ ٕज़Λ੾Γସ͑ΔՄೳੑ͕͋ΔͷͰ͋Ε͹ɺ ۩ମతͳΠϯϑϥετϥΫνϟͷ࣮૷ʹґଘ͍ͯ͠Δ υϝΠϯͷϝϯςφϯεੑ͕௿Լ͢Δɻ ! ϢʔςΟϦςΟ΍ݴޠϨϕϧͰ·Ͱ͸ґଘΛؾʹ͢Δඞཁ͸ͳ͍ͱ ͑Δɻ
10. Table Module >Table Module͸σʔλϕʔεͷςʔϒϧʹؔ࿈ͨ͠Ϗδωεϩδο ΫΛ1ͭͷΤϯςΟςΟΫϥεͱ࣮ͯ͠૷͠·͢ɻ ιϑτ΢ΣΞཁ͕݅υϝΠϯͷӬଓԽʹಛఆͷσʔλϕʔεʹ͔͠࢖ Θͳ͍৔߹͸ɺ͜ͷख๏Ͱ΋͍͍ͱߟ͑Δ υϝΠϯ૚ʹ࠷దͳΞʔΩςΫνϟΛߟ͑Δ
11. தن໛ɾେن໛։ൃʹ͓͚Δݱ࣮ղ • ओʹI/Oͷٕज़ʹؔͯ͠͸ೖΕସ͑ͯ΋υϝΠ ϯʹӨڹ͠ͳ͍Α͏ͳઃܭͰ͋Γ͍ͨ • υϝΠϯϞσϧʹӨڹ͠ͳ͍ϥΠϒϥϦɺݴ ޠػೳ౳͸ґଘͤͯ͞΋͍͍ • ϨΠϠʔυΞʔΩςΫνϟʹ͓͍ͯͷґଘؔ ܎Ͱ໰୊ࢹ͍ͯ͠Δͷ͸υϝΠϯʹӨڹ͢Δ Α͏ͳٕज़͕ґଘͯ͠͠·͏ͱ͜Ζʹ͋Δɻ (ྫ͑͹ɺRepository) ※͜ΕҎ߱ͷεϥΠυ͸౎߹্Πϯϑϥετϥ Ϋνϟ͸ཁ݅มߋ༨஍ͷ͋ΔΠϯϑϥετϥΫ νϟͱͯ͠ѻ͍·͢ɻ
12. Layered Architecture(DIP) Infrastructure UI Application Domain Dependency Domain͕ͲͷϨΠϠ ʹ΋ґଘ͍ͯ͠ͳ͍
13. ~DIP~ґଘؔ܎ٯసͷݪଇ >ʮந৅ʯ͸࣮૷ͷৄࡉʹґଘͯ͠͸ͳΒͳ͍ɻ࣮૷ͷ ৄࡉ͕ʮந৅ʯʹґଘ͢΂͖Ͱ͋Δɻ ࣮ફυϝΠϯۦಈઃܭ (Object Oriented SELECTION) >্ҐͷϞδϡʔϧ͸ԼҐͷϞδϡʔϧʹґଘͯ͠͸ͳΒ ͳ͍ɻͲͪΒͷϞδϡʔϧ΋ʮந৅ʯʹґଘ͢΂͖Ͱ͋ Δɻ
14. DDDͰ͸࠷্ҐͷϞδϡʔϧ͸υϝΠϯ૚ͩͱଊ͑Δͷ͕ࣗવͰɺ ্ҐϞδϡʔϧ͸υϝΠϯ૚ͷ͜ͱΛࢦ͢ɻ ࣮૷ͷํ਑͸υϝΠϯ૚ͷந৅(I/F) ʹΑܾͬͯఆ͞ΕΔɻ ~DIP~ґଘؔ܎ٯసͷݪଇ ࢲతݟղ
15. ~DIP~ґଘؔ܎ٯసͷݪଇ ! (ݴ͍׵͑ྫ) υϝΠϯ૚͕ΠϯϑϥετϥΫνϟ૚ʹґଘͯ͠͸ͳΒ ͳ͍ɻ ͲͪΒͷϞδϡʔϧ΋υϝΠϯ૚ͷந৅ʹґଘ͢΂͖Ͱ ͋Δɻ ! >্ҐͷϞδϡʔϧ͸ԼҐͷϞδϡʔϧʹґଘͯ͠͸ͳΒ ͳ͍ɻͲͪΒͷϞδϡʔϧ΋ʮந৅ʯʹґଘ͢΂͖Ͱ͋ Δɻ
16. ~DIP~ґଘؔ܎ٯసͷݪଇ (ݴ͍׵͑ྫ) υϝΠϯ૚ͷந৅͸ΠϯϑϥετϥΫνϟ૚ͷ࣮૷ͷৄ ࡉʹґଘͯ͠͸ͳΒͳ͍ɻ ΠϯϑϥετϥΫνϟͷ࣮૷ͷৄࡉ͕υϝΠϯ૚ͷந৅ ʹґଘ͢΂͖Ͱ͋Δɻ >ʮந৅ʯ͸࣮૷ͷৄࡉʹґଘͯ͠͸ͳΒͳ͍ɻ࣮૷ͷ ৄࡉ͕ʮந৅ʯʹґଘ͢΂͖Ͱ͋Δɻ
17. Layered Architecture(DIP)αϯϓϧ ίʔυ(؆қ) ! https://github.com/kimutyam/layered-dip-hands-on
18. ύοέʔδྫ ! ϨΠϠຖʹϓϩδΣΫτ෼ׂ
19. υϝΠϯϓϩδΣΫτ(ྫ) ! RepositoryͷI/FΛఆٛ
20. ΠϯϑϥετϥΫνϟϓϩδΣΫτ (ྫ) ! Repositoryͷ࣮૷
21. ٕज़͕૿͍͑ͯ͘ʹͭΕͯΠϯϑϥετϥΫνϟ૚͕ ϑΝοτʹͳΓ͕ͪ(ΠϯϑϥετϥΫνϟΛϓϩδΣΫ τ෼ׂͨ͠Βղܾ) UI͕૿͍͑ͯ͘ʹͭΕͯUI૚͕ϑΝοτʹͳΓ͕ͪ(UIΛ ϓϩδΣΫτ෼ׂͨ͠Βղܾ) Layered Architecture With DIP ΞʔΩςΫνϟϨϕϧͰΠϯϑϥετϥΫνϟͱUIͷ ؔ৺ͷ෼཭Λߦ͏͜ͱ͕೉͍͠
22. 2.ϔΩαΰφϧΞʔΩςΫνϟ֓ཁ
23. ϔΩαΰφϧΞʔΩςΫνϟ(Hexagonal architecture຋༁)
24. ಺ଆͱ֎ଆͷΞμϓλ ΞϓϦέʔγϣϯͷ֎ଆ ! ΞϓϦέʔγϣϯػೳཁ ݅ υϝΠϯͷϏδωε ϩδοΫ ಺ଆͱ֎ଆͷίϛϡχέʔγϣ ϯΛࣝผ͢Δϙʔτ
25. ґଘؔ܎ਤ
26. ॲཧͷྲྀΕ
27. Hexagonal Architecture༻ޠ(1) • Port(ϙʔτ) ΠϯλʔϑΣʔεΛجૅʹσόΠε(αʔϏε)ؒͷձ࿩ Λࣝผ͢Δɻϙʔτͷ਺͸ઃܭऀ࣍ୈͰࣗ༝ɻ >ͳʹ͕ϙʔτͰɺͳʹ͕ͦ͏Ͱͳ͍͔͸ɺ΄ͱΜͲ޷ Έͷ໰୊ͩɻ >Θͨ͠ͷબ୒͸ɺ2,3,4ϙʔτͷখ͍͞਺ࣈΛ޷Ή܏޲ ͕͋Δɻ ϔΩαΰφϧΞʔΩςΫνϟ(Hexagonal architecture຋༁)
28. Hexagonal Architecture༻ޠ(2) • Adapter(Ξμϓλ) ΠϯλʔϑΣʔεΛ֤σόΠε(αʔϏε)͕ඞཁͱ͢Δ ৴߸ʹม͑Δ Port : Adapter = 1 : N >σόΠε͕ඞཁͱ͢Δ৴߸ʹม͑Δɺٯ΋·ͨવΓɻ ϔΩαΰφϧΞʔΩςΫνϟ(Hexagonal architecture຋༁)
29. Hexagonal Architecture༻ޠ(3) • Primary Port(ϓϥΠϚϦʔϙʔτ) ΞϓϦʔέʔγϣϯΛۦಈ͢Δϙʔτͷ͜ͱΛࢦ͢
30. Hexagonal Architecture༻ޠ(4) • Secondary Port(ηΧϯμϦʔϙʔτ) ΞϓϦʔέʔγϣϯʹۦಈ͞ΕΔϙʔτͷ͜ͱΛࢦ͢
31. Hexagonal Architectureͷࢫຯ(1) • ϙʔτ୯ҐͰؔ৺Λ෼཭͢Δ͜ͱ͕Մೳ • υϝΠϯΛத৺ʹஔ͘ࣄͰΞϓϦέʔγϣϯશମͷํ਑ ͕ܾఆ͞ΕΔ ϙʔτؒͰͷґଘ͸ͳ͘ɺϙʔτ্Ͱ͸υϝΠϯͳ͍͠ ͸ΞϓϦέʔγϣϯͷ࣮૷Λར༻ͨ͠ΓɺI/FΛ࣮૷͢Δ • Ξμϓλ୯ҐͰٕज़ͷ૊Έସ͕͑Մೳ(ৄࡉͷٕज़Λมߋ ͯ͠΋υϝΠϯʹ͸Өڹ͸͠ͳ͍) • ϞοΫԽ͠΍͍͢(ϞοΫDBΛར༻͢ΔΑ͏ͳ࢓૊Έ͕ ؆୯ʹ࣮ݱͰ͖Δ) • ࢹ֮తͰॲཧͷϑϩʔ΍ґଘؔ܎͕໌ྎ
32. Hexagonal Architectureαϯϓϧ ίʔυ https://github.com/kimutyam/hexagonal-hands-on
33. ύοέʔδྫ ྫʹΑͬͯϨΠϠɾϙʔτ ຖʹϓϩδΣΫτ෼ׂ
34. υϝΠϯϓϩδΣΫτྫ(1) • ίΞυϝΠϯͱ αϒυϝΠϯΛ ू໿ • ڥք͚ͮΒΕͨ ίϯςΩετؒ ͷґଘΛͳ͘͢ • υϝΠϯҎ֎ͷ ϓϩδΣΫτͷ ґଘ͸ͤ͞ͳ͍
35. υϝΠϯϓϩδΣΫτྫ(2) • υϝΠϯϞσϧ (Entity,VO,Service,Event,Mo dule) • Repository,Factory,Aggrega te etc
36. υϝΠϯϓϩδΣΫτྫ(2)
37. ΞϓϦέʔγϣϯϓϩδΣΫτྫ(1) ΞϓϦέʔγϣϯϓϩδΣΫτ ֤υϝΠϯΛґଘͤ͞Δ
38. ΞϓϦέʔγϣϯϓϩδΣΫτྫ(2) • ΞϓϦέʔγϣϯαʔϏε ࠞཚ͕ͪ͠ͳαʔϏεͱ͍͏֓೦ʹ͍ͭͯ υϝΠϯαʔϏεͱΞϓϦέʔγϣϯαʔϏεͷҧ͍ ʹ͍ͭͯ͸ҎԼࢀর
39. ΞϓϦέʔγϣϯϓϩδΣΫτྫ(3) ڥք͚ͮΒΕͨυϝΠϯίϯ ςΩετͷConverter(Mapper)
40. ΞϓϦέʔγϣϯϓϩδΣΫτྫ(4) DTO(Data Transfer Object)
41. ϙʔτϓϩδΣΫτྫ(1) • ϙʔτϓϩδΣΫ τ ϓϥΠϚϦʔϙʔ τͱηΧϯμϦϙʔ τΛू໿ • ϓϥΠϚϦʔϙʔ τ • ηΧϯμϦʔϙʔ τ ! ※ϙʔτؒͷґଘ͸ ͳ͠
42. ϓϥΠϚϦʔϙʔτϓϩδΣΫτྫ (1) • WebServiceϙʔτ • HttpʹΑͬͯۦಈ͞ΕΔ • PlayFrameworkΛར༻
43. ϓϥΠϚϦʔϙʔτϓϩδΣΫτྫ (2) • WebService ϙʔτ • Controll er • Router • json • Form
44. ϓϥΠϚϦʔϙʔτϓϩδΣΫτྫ (3) • Batchϙʔτ • CLIͰ࣮ߦ͢Δ
45. ϓϥΠϚϦʔϙʔτϓϩδΣΫτྫ (4) • Batchϙʔτ • Batch • Scheduler etc…
46. • Persistenceϙʔτ • RDBMS΍KVS΁ͷӬଓԽ ͷ੹຿ ηΧϯμϦϙʔτϓϩδΣΫτྫ(1) • ThirdPartyAPIϙʔτ • ThirdPartyͷAPIΛܦ༝͠ ͨίϛϡχέʔγϣϯΛ ͢Δ੹຿
47. • Persistenceϙʔτ • RDBMS΍KVSͷ۩ମతͳ࣮૷ • υϝΠϯϦϙδτϦI/Fͷํ਑ʹै͏ • DAO ηΧϯμϦϙʔτϓϩδΣΫτྫ(2)
48. • ThirdPartyAPIϙʔτ • APIClient • υϝΠϯϦϙδτϦI/Fʹ ै࣮ͬͨ૷ ηΧϯμϦϙʔτϓϩδΣΫτྫ(3)
49. • ֤ϓϩδΣΫτΛू໿ɾґଘ • ·ͱΊ໿ RootϓϩδΣΫτྫ(1)
50. • DependencyInjection • ΞϓϦέʔγϣϯͷઃఆϑΝ Πϧ౳ RootϓϩδΣΫτྫ(2)
51. Hexagonal Architectureͷࢫຯ(2) ϔΩαΰφϧΞʔΩςΫνϟ͸ෳ਺ͷ֎෦αʔϏεͱͷ࿈ ܞ͕࣮૷͠΍͍͢ ํ਑͸த৺ʹυϝΠϯΛਾ͑Δɹˠɹ౷ҰతͳઃܭΛҡ ࣋͢Δ͜ͱ͕Մೳ
52. 3.ฐࣾͰͷιϑτ΢ΣΞઓུ
53. ฐࣾͰߦ͍ͬͯΔઓུ ઓུతυϝΠϯ ઃܭ ઓज़తυϝΠϯ ઃܭ ৄࡉ࣮૷ ϞοΫ࣮૷ ϞϊϦγοΫΞϓϦέʔγϣϯ
54. ฐࣾͰߦ͍ͬͯΔઓུ ઓུతυϝΠϯ ઃܭ ઓज़తυϝΠϯ ઃܭ ৄࡉ࣮૷ ϞοΫ࣮૷ ઓུతυϝΠϯ ઃܭ ઓज़తυϝΠϯ ઃܭ ৄࡉ࣮૷ ϞοΫ࣮૷ ڥք͚ͮΒΕͨίϯςΩετ୯ҐͰϚ ΠΫϩαʔϏεԽ
55. ϚΠΫϩαʔϏεΞʔΩςΫνϟͷΠϝʔδ !
56. ࣮ફ౤ೖͯ͠ΈͯͷϝϦοτ·ͱΊ • ϓϩδΣΫτɾϓϩμΫτಋೖظͷυϝΠϯΛৠཹͤ͞ ͳ͕ΒɺϞοΩϯά͕͠΍͍͢ • ґଘؔ܎ͷ੍໿͕ڧ͍ΞʔΩςΫνϟͳͷͰίʔυͷํ ਑͕ͿΕͮΒ͍ • ৽͍ٕ͠ज़Λಋೖ͠΍͍͢ • ϚΠΫϩαʔϏεͱͷ૬ੑ͕Α͍ • ϨΠϠʔυΞʔΩςΫνϟDIPͱൺ΂ͯؔ৺ͷ෼཭͕͠΍ ͘͢ • ΞʔΩςΫνϟਤͷࢹ֮ޮՌʹΑΓϝϯόʔͷཧղ͕͸ ΍͍ ! !
57. ࣮ફ౤ೖͯ͠Έͯ೰Μͩ͜ͱ·ͱΊ • Batchͷ։ൃΛBatchϙʔτͰߦ͍͕ͬͯͨɺ ඞͣ͠΋υϝΠϯΛܦ༝͢ΔBatchͰ͸ͳ͔ͬͨɻ
 (MySQLͷύʔςΟγϣϯ௥Ճͱ͔) →ɹRootϓϩδΣΫτͷઃఆͱͯ͠ఆ͍ٛͯ͠Δ →ɹͦΕΑ͏ͷϓϩδΣΫτΛ੾Δͷ΋͋Γͩͱߟ͑Δ ! • ϙʔτؒͷίϛϡχέʔγϣϯ͕Ͱ͖ͳ͍ͷͰɺ ͪΐͬͱ࣮ͨ͠૷Λॻ͘ͱ͖Ͱ΋υϝΠϯܦ༝Ͱ࣮ݱΛߟ ͑Δඞཁ͕͋ͬͨ →ɹ͍͍ҙຯͰ΋ѱ͍ҙຯͰ΋੍໿͕͋ΓɺΞ΢τϓοτ ͕஗͘ͳΔέʔε͕͋Γ·͢ɻ׳ΕΕ͹ͳΜͯ͜ͱͳ͍Ͱ ͕͢ɻ
58. ࢀߟࢿྉ ॻ੶ ʰ࣮ફυϝΠϯۦಈઃܭ (Object Oriented SELECTION)ʱ ॻ੶ʰΤϦοΫɾΤϰΝϯεͷυϝΠϯۦಈઃܭʱ ϔΩαΰφϧΞʔΩςΫνϟͱϨΠϠʔΞʔΩςΫνϟͷҧ͍ͱϚΠΫϩαʔϏε - falsandtru ͷϝϞா υϝΠϯ૚ʹ࠷దͳΞʔΩςΫνϟΛߟ͑Δ ϔΩαΰφϧΞʔΩςΫνϟ(Hexagonal architecture຋༁) ΦϒδΣΫτࢥߟ: ґଘؔ܎ٯసͷݪଇ ࠞཚ͕ͪ͠ͳαʔϏεͱ͍͏֓೦ʹ͍ͭͯ
59. ͝ਗ਼ௌ͋Γ͕ͱ͏͍͟͝·ͨ͠