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goはwireでDIする
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Takashi Matsuyuki
May 30, 2019
Technology
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goはwireでDIする
Takashi Matsuyuki
May 30, 2019
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Transcript
GowireͰDI͢Δ
ࣗݾհ ໊લ: দઇ @applepine1125
ΞδΣϯμ • wireͱ • ͍ํ • ϝϦοτɺσϝϦοτ
wireͱʁ
wireͱʁ w ґଘੑͷೖɺॳظԽΛߦ͏ϝιουΛࣗಈੜͯ͘͠ΕΔ ϥΠϒϥϦ w QSPWJEFS ֤ίϯϙʔωϯτͷΠχγϟϥΠβ ͱJOKFDUPS QSPWJEFS ͨͪΛݺͼग़ͯ͠%*͢Δ
Λ׆༻͍͍ͯ͠ײ͡ʹ%*͢Δ w HPPHMFɺ(P$MPVE͔ΒϥΠϒϥϦͱͯ͠Γग़͞Εͨ
͍ํ
͍ํ ྫ ҎԼͷΑ͏ͳϞδϡʔϧ܈Λ͍͍ײ͡ʹ%*͍ͨ͠ ֤ϞδϡʔϧͷQSPWJEFSΛ࣮ XJSFHPʹJOKFDUPSΛ࣮ wire genͰXJSF@HFOHPΛੜɺඞཁͳॴͰݺͼग़͢
֤ϞδϡʔϧͷproviderΛ࣮
֤QSPWJEFSΛXJSF#VJMEʹ·ͱΊͯಥͬࠐΉ ߦʹ// +build wireinject Λهड़͠ͳ͍ͱXJSFHFO͕ೝࣝ ͯ͘͠Εͳ͍ injectorΛ࣮
// +build wireinject Λهड़ͯ͋͠ΔϑΝΠϧΛೝࣝͯ͠ XJSF@HFOHP͕ੜ͞ΕΔ Γͳ͍ͷ͕͋Δ߹$-*ͷΤϥʔίϝϯτʹग़Δ wire_gen.goͷੜ
injectorͷهड़όϦΤʔγϣϯ FSSPSΛฦ͠͏ΔQSPWJEFS͕͋Δͱ͖ JOKFDUPSͷΓʹFSSPSΛՃ͢Δ͚ͩ ྫ /FX%3FQPTJUPSZ͕FSSPSΛฦ͠͏Δ
injectorͷهड़όϦΤʔγϣϯ FSSPSͱԿΒ͔ͷؔΛฦ͠͏ΔQSPWJEFS͕͋Δͱ͖ JOKFDUPSͷΓʹFSSPSͱGVOD ΛՃ͢Δ͚ͩ ྫ /FX%3FQPTJUPSZ͕FSSPSͱ%#$MPTF͢ΔؔΛฦ͠͏Δ
injectorͷهड़όϦΤʔγϣϯ ೖ͍ͨ͠ߏମ͕͋Δͱ͖ JOKFDUPSͷҾʹೖ͍ͨ͠ߏମΛՃ͢Δ͚ͩ ྫ /FX%3FQPTJUPSZ͕JOGSB%#JOUFSGBDFΛҾʹͱΓɺJOUFSGBDFΛ࣮ͨ͠NZTRMSFEJTଓ ͢ΔͨΊͷߏମΛJOKFDUPSͷݺͼग़͠ઌͰೖΕΔ
wireͷศརػೳ ・wire.NewSet(..interface{}) ProviderSet QSPWJEFSΛάϧʔϐϯάͰ͖Δ ґଘ͕ଟ͍ϞδϡʔϧͷQSPWJEFSΛ·ͱΊ͓ͯ͘ͱศར #4FSWJDF͕ґଘ͢ΔϞδϡʔϧ͕ଟ͍ͱ͖ɺ/FX4FUͰ·ͱΊͯɾɾɾ JOKFDUPSͰݺͼग़͢ͱศར
wireͷศརػೳ ଞʹ৭ʑ ɾwire show ͰQSPWJEFS4FUͷґଘϞδϡʔϧΛ֬ೝ ɾ#JOEJOH*OUFSGBDFͰJOUFSGBDFͱ࣮Λඥ͚ͮ ɾ#JOEJOH7BMVFTͰࢦఆͨ͠ΛಥͬࠐΜͰॳظԽ͢Δ υΩϡϝϯτΛಡ͏ IUUQTHJUIVCDPNHPPHMFXJSFUSFFNBTUFS@UVUPSJBM IUUQTHJUIVCDPNHPPHMFXJSFUSFFNBTUFSEPDT
IUUQTHPEPDPSHHJUIVCDPNHPPHMFXJSF
ϝϦοτɺσϝϦοτ
ϝϦοτ ɾʑͱΠχγϟϥΠβॻ͔ͳ͍͍ͯ͘ͷָ ɾΤϥʔϋϯυϦϯάͱ͔͢Δඞཁ͕͋Δͱ͖ߋʹָ ɾ1SPWJEFS4FUศར σϝϦοτ ɾಉ͡ύοέʔδʹෳXJSFHPஔ͚ͳ͍ ˠςετ༻ʹ%*͍ͨ͠ͱ͖ෆศ ɾΠχγϟϥΠβͰෳࡶͳ͜ͱ͢ΔͨΊʹख࣮͢Δ͔͠ͳ͍ ׂͱඞཁेͳػೳἧ͍ͬͯΔͷͰɺXJSFͰΓͮΒ͞Λײͨ͡ ͱ͖ʹͦͦઃܭ͕·͍ͣͷͰʁͱཱͪͬͯߟ͑Δ͖͔͚ͬʹ
ͳΓͦ͏ ϝϦσϝ
ୀ۶ͳ͜ͱ ϥΠϒϥϦʹΒͤΑ͏