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onigra
August 05, 2017
Technology
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ginza-ruby-kaigi-01
https://ginzarb.github.io/kaigi01/
onigra
August 05, 2017
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Transcript
Spring Frameworkͱൺֱֶͯ͠Ϳɺ WebΞϓϦέʔγϣϯϑϨʔϜϫʔΫͷ ׂ ͗Μ͟Rubyձٞ 01 2017-08-05 @onigra_
Yudai Suzuki / ླ༤େ @onigra_ onigra
͜ͷΛ͢Δʹ͋ͨͬͯ • ϓϩάϥϚʔͱͯ͠ࣄ͢Δ্Ͱɺ ॳΊͯͪΌΜͱֶΜͩͷ͕Ruby • ࣄͰ͏Web Application Frameworkɺ ΄ͱΜͲRailsͩͬͨ
Railsʹֶ͍ͭͯΜͰߦ͘͏ͪʹ • ใΛूΊͯΈΔͱɺRailsʹׂͱ ൷͕ଟ͍͜ͱʹؾͮ͘
ྫ • MVCͷఆٛʹ͍ͭͯ • ActiveRecord
ͳΔ΄Ͳ
ࠓͷ4݄ʹస৬
http://rubykaigi.org/2017/sponsors • http://rubykaigi.org/2017/sponsors
స৬ͯ͠ Java + Spring Frameworkʹ৮ΕΔ • ਖ਼֬ʹSpring Boot • Spring
BootɺSpring Frameworkͷ͍ͭ͘ ͔ͷϞδϡʔϧΛ౷߹ͯ͠ɺWebΞϓϦ έʔγϣϯΛߏஙͨ͘͢͠͠ͷ
Spring FrameworkΛ௨͠ ൷ͷ༰Λ վΊͯཧղ͢Δ
͜ͷൃදͷதͰ͍͑ͨ͜ͱ • ࢲͷΑ͏ʹɺϓϩάϥϛϯάWeb։ൃΛ RubyɺRails͔Β͡Ίͨํʑʹɺ ҟͳΔݴޠͷϑϨʔϜϫʔΫͷ ઃܭࢥύϥμΠϜʹ৮ΕΔ͜ͱʹΑΓɺ ৽͍͠ݟΛಘΔػձʹͳ͍͚ͬͯͨͩΕ ͍Ͱ͢
ҙ • ຊൃදͰপʹೖΓࠐΉͷΛආ͚ΔͨΊɺҎԼʹ͍ͭͯ ਂ͘౿ΈࠐΜͩ͠·ͤΜ • υϝΠϯۦಈઃܭ(DDD) • ΤϯλʔϓϥΠζΞϓϦέʔγϣϯΞʔΩςΫνϟύλʔ ϯ(PofEAA) •
͋͘·ͰRuby on RailsͱSpring Frameworkͷػೳͷൺֱͱ ͍͏؍Ͱ͓͠·͢
ࠂ
גࣜձࣾΤεΤϜΤεͰɺ ษڧձͷձఏڙΛ͡Ί·͢ • ࠷େͰ136໊·Ͱऩ༰ՄೳͳձΛఏڙͰ͖· ͢ • ৄࡉ@onigra_·Ͱ͓͍߹Θ͍ͤͩ͘͞ • ॴେ(ࣳެԂ) •
https://twitter.com/onigra_
Elastic Leadershipͷ ΠϕϯτΓ·͢ • ฐࣾͨͳ͢ͳ͓(@sunaot)͕ΤοηΠΛدߘ͠ ͨɺElastic LeadershipͷΠϕϯτΛߦ͍·͢ • ήετʹϨδϟϦʔϫʔΫε߹ಉձࣾͷ Shinichiro
OGAWA(@conceal_rs)͞ΜΛ͓ট͖͠ ·͢ • ͪ͜Βৄࡉ͕ܾ·Γ࣍ୈɺSNSʹͯࠂ͠·͢
σʔλΞΫηε
σʔλΞΫηε • Spring FrameworkʹɺRDBMSͷσʔλ ӬଓԽʹΞΫηε͢ΔͨΊͷϥΠϒϥϦͱ ͯ͠ɺSpring Data͕ଘࡏ͢Δ • Spring DataɺRDBMSҎ֎ͷσʔλιʔε
ʹରԠ࣮͕ͨ͠ଘࡏ͢Δ
Spring Data • https://projects.spring.io/spring-data/ • MongoDB • LDAP • ֎෦Web
API • Redis • Elasticsearch • etc…
Repository • Spring Core͕ఏڙ͍ͯ͠Δ • υϝΠϯΦϒδΣΫτͱσʔλΞΫηεͷ࣮Λ ্ͨ͠ͰɺRepositoryͦΕΒͷհΛߦ͏ • Spring Core͕ఏڙ͢ΔRepositoryʹର͠ɺ
Spring DataͷΛTemplateͱݺͿ
ϑϨʔϜϫʔΫͱͯ͠ͷ ActiveRecordͷσϝϦοτ • ϞσϧͱDB͕ີ݁߹ • Modelͱσʔλϕʔεઃܭ͕݁߹ͯ͠͠·͏ • ΦϒδΣΫτ͕σʔλϕʔεςʔϒϧͱରԠ͠ ͍ͯΔͱActiveRecordඇৗʹ༗ޮ •
σʔλϕʔεͷઃܭ͕ɺ͍͔ʹActiveRecordͰѻ͍ ͘͢͢ΔʹͲ͏͢Δ͔ɺͱ͍͏ํʹͳΓ͕ͪ
RepositoryͱTemplateΛ ༻͍࣮ͨ • Interfaceͷఆٛ • Interfaceʹର͠ɺσʔλιʔε͝ͱʹɺσʔ λΞΫηεͷ۩ମతͳ࣮Λߦ͏
RepositoryͱTemplateΛ ༻͍࣮ͨ
Կ͕خ͍͔͠ʁ • RepositoryͰఆٛͨ͠ΠϯλʔϑΣʔεͱɺ Templateͷ࣮Λ͚Δ͜ͱʹΑͬͯɺ ϏδωεϩδοΫͱ࣮ͷ͕Ͱ͖Δ • σʔλΞΫηεͷ࣮ΛΓସ͑Δ͚ͩͰɺΞϓ Ϧέʔγϣϯͷมߋ͕ྃ͢Δ • ϏδωεϩδοΫʹର࣮ͯ͠ͷมߋ͕༰қʹͳΔ
ActiveResource • ֎෦ͷWeb APIΛɺAcriveRecordΦϒδΣΫ τͷΑ͏ʹѻ͏͜ͱ͕Ͱ͖ΔΑ͏ʹͳΔgem • Rails2, 3ʹCoreʹ͕͋ͬͨɺ4Ͱ֎Εͨ
RubyͰRepository • rom-rb • http://rom-rb.org/ • Ruby Object Mapper •
HANAMIͷ෦Ͱ༻͞Ε͍ͯΔ • http://hanamirb.org/
Callbackͱ ΞεϖΫτࢦϓϩάϥϛϯά
ΞεϖΫτࢦϓϩάϥϛϯά ͱʁ • Aspect Oriented Programming • ΦϒδΣΫτͷ୯ҐͰ͏·͘Ͱ͖ͳ͍ɺ ΦϒδΣΫτؒΛ·͙ͨػೳΛʮہ໘ʯͱ͍͏ ୯Ґ͝ͱʹϞδϡʔϧԽ͢ΔϓϩάϥϛϯάύϥμΠ
Ϝ • ΦϒδΣΫτؒΛ·͙ͨػೳͷ͜ͱΛ ʮCrosscutting Concern(ԣஅతؔ৺ࣄ)ʯͱݺͿ
Crosscutting Concernͷྫ • Logging • Caching • Error Handling •
Transaction
ΞεϖΫτࢦϓϩάϥϛϯά Ͱ༻͍ΒΕΔ༻ޠ • Join Point • ΞϓϦέʔγϣϯ࣮ߦதͷɺ͋Δಛఆͷʮ࣌ʯΛࢦ͢ • Advice •
Join PointͰ࣮ߦ͞ΕΔॲཧ • Pointcut • Join Pointͷఆٛ
Spring AOP
Spring AOPͷ͍ํ • Join PointΛܾΊͯPointcutͱͯ͠ఆٛ͠ɺ PointcutͰߦ͏࣮ॲཧͰ͋ΔAdviceΛఆٛ͢ Δ • ಛఆͷΫϥεͷಛఆͷϝιου͕࣮ߦ͞ΕΔ લޙʹɺ࣮ߦ͢ΔॲཧΛఆٛ͢Δ
Pointcutͷఆٛ @Aspect public class RepositoryPointcut { // UserRepositoryͷsaveϝιου͕࣮ߦ͞ΕΔ࣌(Join Point)ΛPointcutͱͯ͠ఆٛ @Pointcut("execution(*
com.onigra.springaopsample.repository..UserRepository+.save(..))") public void save() {} }
Adviceͷఆٛ @Aspect @Component public class LoggingAdvice { private static final
Logger LOGGER = LoggerFactory.getLogger(LoggingAdvice.class); @Before(“com.onigra.springaopsample.aspect.UserPointcut.save()") public void beforeSave(JoinPoint joinPoint) { LOGGER.info("UserRepositoryͷsaveϝιου࣮ߦલʹϩάΛग़ྗ͢Δ"); } }
RailsͰݴ͏ͱCallback͔ͳ
AOPͱCallback ࣅͯඇͳΔͷ
RailsͷCallback • ActiveSupport::Callbacks#run_callbacksʹ ϒϩοΫΛ͢͜ͱͰ࣮ݱ • Rubyͷݴޠͱͯ͠ͷػೳΛར༻͍ͯ͠Δ
Spring AOP • όΠτίʔυม • ίϯύΠϧޙͷόΠφϦΛվม͠ɺॲཧΛࠩ ͠ࠐΉ
TransactionͰͷAOP • RailsɺActiveRecord::Transactions.transactionʹϒϩοΫΛ͢ • Spring FrameworkɺTransactionΛ͔͚͍ͨ ϝιουʹର͠ɺTransactionalΞϊςʔγϣϯ(Ճใ)Λ༩ • RailsͷΑ͏ʹɺϓϩάϥϜͷதͰ੍ޚΛߦ͏ํ๏ʹର͠ɺʮಛఆ ͷϝιουͷ࣮ߦ࣌ʹτϥϯβΫγϣϯΛ͔͚Δʯͱ͍͏
એݴΛߦ͏͜ͱΛɺʮએݴతτϥϯβΫγϣϯʯͱݺͿ • ※ϓϩάϥϛϯάʹΑΔτϥϯβΫγϣϯཧͰ͖Δ
MVCͱ ϨΠϠʔυΞʔΩςΫνϟ
ΞϓϦέʔγϣϯͷ ϨΠϠʔԽͷͱ MVC(MVC2, MVC Model2)ͷ શ͘ผͷʂʂʂ
Railsͷׂͷɺ ΞϓϦέʔγϣϯͷϨΠϠʔԽͷͱɺ MVCͷ͕ࠞͬͯ͟͠·͍ͬͯΔ ʢ͜ͱ͕ଟ͍ؾ͕͢Δʣ
͞Βʹͦ͜ʹDDDʹ͓͚ΔαʔϏεͱ PofEAAͷαʔϏεͷ͕ࠞͬͯ͟ େมͳ͜ͱʹ…
ΞϓϦέʔγϣϯઃܭʹ͓͚Δ ϨΠϠͷ֓೦ͱ • ݩClient-Server Modelͷߟ͑ํ • Webʹߟ͑ํ͕Ԡ༻͞Εɺൃల͖ͯͨ͠ • ͔͠͠ɺΞʔΩςΫνϟจݙʹΑ༷ͬͯʑ ͳϨΠϠʔͷ໊শ͕ଘࡏ͢ΔͷͰҙ͕ඞཁ
ΫϥΠΞϯταʔόϞσϧʹ͓ ͚Δ3ΞʔΩςΫνϟ • ϓϨθϯςʔγϣϯ: UI • ΞϓϦέʔγϣϯ: ϏδωεϩδοΫ • σʔλ:
σʔλΞΫηε
PofEAAʹ͓͚Δ3ΞʔΩςΫ νϟ • ϓϨθϯςʔγϣϯ: UI • υϝΠϯ: ϏδωεϩδοΫ • σʔλιʔε:
σʔλΞΫηε
͜ͷجຊͱͳΔ3Ͱ ߟ͑ͯݟΔ
Spring Framework • ϓϨθϯςʔγϣϯ • View(Template Engine(ThymeLeaf)) • Controller(Spring MVC)
• υϝΠϯ • Service(Spring Core) • Repository(Spring Core) • σʔλιʔε • Template(Spring Data) • ͦΕͧΕͷ͔ΒModelΛѻ͏
Spring Framework https://yo1000.gitbooks.io/self-study-spring/content/chapter1.html
Ruby on Rails • ϓϨθϯςʔγϣϯ • View(ActionView, View Template Engine(ERB))
• Controller(ActionController) • υϝΠϯ • Model(ActiveRecord, ActiveModel) • σʔλιʔε • Model(ActiveRecord)
༷ʑͳϨΠϠʔԽͷύλʔϯ͕ ଘࡏ͢Δ • ΞϓϦέʔγϣϯʹΑͬͯɺదͳϨΠϠԽ ҟͳΔ • จ຺ΞʔΩςΫνϟʹΑͬͯɺ໊শ͕ඃͬ ͨΓҟͳͬͨΓ૿͑ͨΓ͢Δͷʹҙ • ϨΠϠͷҙຯΛཧղ͠ɺదͳϨΠϠΛબ
͠Α͏
·ͱΊ
2ͭͷϑϨʔϜϫʔΫΛ ൺֱͯ͠ • RailsϢʔεέʔεΛߜͬͯɺׂΓͬͨઃܭʹ͍ͯ͠Δ • ͦͷɺϚον͠ͳ͍Ϗδωεཁ݅ʹΑͬͯɺਏΈવग़Δ • Spring Frameworkɺ͡Ί͔Β͍ϢʔεέʔεʹରԠ͢Δ ͜ͱΛࢦ͍ͯ͠Δ
• ෳࡶͳϏδωεཁ݅ɺظతͳ֦ுͷՄೳੑΛߟ͑Δͱɺ Spring Framework༏Εͨબࢶ • ҰํͰɺ͋Β͔͡Ίཧղ͓͖ͯ͘͠จ຺ɺ͕ࣝଟ͍
2ͭͷϑϨʔϜϫʔΫΛ ൺֱͯ͠ • ઃܭͷ෯Λ٘ਜ਼ʹͭͭ͠ɺ֮͑Δ͜ͱΛݮΒͯ͠։ ൃΛ্͛Δ͜ͱ͕Ͱ͖ΔActiveRecordΓศ ར • ໊শɺจ຺Λཧղ্ͨ͠ͰΞʔΩςΫνϟύλʔ ϯΛ͍͜ͳ͢ͷେม͔ͩΒɺେʹMVCͱ͍͏ ྨΛͨ͠ͷͰʁ
• ͦ͏ߟ͑ΔͱDHHϚδͰ͍͢͝…
ฏຌͳ݁Ͱ͕͢ • ͲͪΒͷํ͕༏Ε͍ͯΔͱ͍͏Ͱͳ͘ɺ ϑϨʔϜϫʔΫΞʔΩςΫνϟͷࢥͱ ϢʔεέʔεΛཧղ͠ɺదͳٕज़બఆΛͯ͠ ͍͖·͠ΐ͏
ҟͳΔݴޠͷϑϨʔϜϫʔΫ ઃܭࢥʹ৮ΕΔ͜ͱɺ ઃܭͷ෯Λ͛Δ͜ͱʹͭͳ͕Δ