Rails アプリケーションのアップデートは大変 / Upgrading Rails application is hard

!ISZTE 3BJMTΞϓϦέʔγϣϯͷ Ξοϓσʔτ͸େม

೥ೖࣾ !ISZTE &$ࣄۀ෦αʔϏεج൫νʔϜ IUUQTISZTEPSH

IUUQTISQFQBCPDPN JOUFSWJFX

αʔϏεج൫νʔϜͬͯ

ࠜݯతͰ͋Γɺղܾɾ࣮ݱํ๏͕Θ͔Βͳ͍ Α͏ͳٕज़՝୊ʹऔΓ૊Έɺ&$ࣄۀ෦ͷ࣍ ͷ೥ͷ੒௕Λࢧ͑Δɻ !LFODIBO

جຊઓུ w%FWFMPQFS&YQFSJFODFͷ޲্ w࣍ͷ೥Λࢧ͑Δٕज़΁ͷ౤ࢿ

جຊઓུ w%FWFMPQFS&YQFSJFODFͷ޲্ w࣍ͷ೥Λࢧ͑Δٕज़΁ͷ౤ࢿ "

%FWFMPQFS&YQFSJFODFͷ޲্ʁ

࠷ۙ͸͜Μͳ͜ͱΛ͍ͯ͠·͢ wݴޠॲཧܥɺϑϨʔϜϫʔΫ౳ͷόʔδϣϯΞοϓ wΤϥʔ௨஌ͱ޲͖߹͏

࠷ۙ͸͜Μͳ͜ͱΛ͍ͯ͠·͢ wݴޠॲཧܥɺϑϨʔϜϫʔΫ౳ͷόʔδϣϯΞοϓ wΤϥʔ௨஌ͱ޲͖߹͏ ܧଓతʹߦ͏ͨΊͷ࢓૊Έͮ͘Γ #

͔͜͜Βຊ୊

3BJMTΞϓϦέʔγϣϯͷ Ξοϓσʔτ͸େม

ͲΜͳΞϓϦέʔγϣϯʁ wϓϥΠϕʔτͳ8FC"1*Λ୲౰ wೖग़ྗ͸+40/ wෳ਺ͷΞϓϦέʔγϣϯ͔Βࢀর

ͲΜͳঢ়گͳͷʁ $ bundle exec rake stats +----------------------+--------+--------+---------+---------+-----+-------+ | Name |
Lines | LOC | Classes | Methods | M/C | LOC/M | +----------------------+--------+--------+---------+---------+-----+-------+ | Controllers | 7140 | 5771 | 126 | 494 | 3 | 9 | | Helpers | 104 | 86 | 0 | 14 | 0 | 4 | | Jobs | 777 | 633 | 31 | 46 | 1 | 11 | | Models | 25804 | 17165 | 386 | 1574 | 4 | 8 | | Mailers | 501 | 407 | 16 | 40 | 2 | 8 | | Javascripts | 479 | 375 | 0 | 53 | 0 | 5 | | Libraries | 4927 | 4084 | 177 | 453 | 2 | 7 | | Tasks | 164 | 143 | 0 | 0 | 0 | 0 | | Config specs | 56 | 48 | 0 | 0 | 0 | 0 | | Controller specs | 8095 | 6640 | 0 | 6 | 0 | 1104 | | Decorator specs | 434 | 351 | 0 | 0 | 0 | 0 | | Feature specs | 342 | 261 | 0 | 0 | 0 | 0 | | Job specs | 1807 | 1497 | 0 | 0 | 0 | 0 | | Lib specs | 6743 | 5685 | 0 | 0 | 0 | 0 | | Mailer specs | 2733 | 2181 | 0 | 0 | 0 | 0 | | Model specs | 48150 | 39211 | 0 | 4 | 0 | 9800 | | Request specs | 26140 | 22135 | 0 | 0 | 0 | 0 | | Serializer specs | 1278 | 752 | 0 | 0 | 0 | 0 | | Uploader specs | 155 | 130 | 0 | 0 | 0 | 0 | +----------------------+--------+--------+---------+---------+-----+-------+ | Total | 135829 | 107555 | 736 | 2684 | 3 | 38 | +----------------------+--------+--------+---------+---------+-----+-------+ Code LOC: 28664 Test LOC: 78891 Code to Test Ratio: 1:2.8 4JNQMF$PWͰͷܭଌ݁Ռ΋

؆୯ʹͰ͖ͦ͏ʂ

ΞϓϦέʔγϣϯͷ೉ॴ wෳ਺σʔλϕʔε wෳ߹ओΩʔ

ΞϓϦέʔγϣϯͷ೉ॴ wෳ਺σʔλϕʔε wUIJBHPQSBEJPDUPQVT wෳ߹ओΩʔ wDPNQPTJUFQSJNBSZLFZTDPNQPTJUF@QSJNBSZ@LFZT

ݸਓతͳؾ࣋ͪ w3BJMTΞϓϦέʔγϣϯ͸Ͳͷఔ౓͕ඪ४ػೳͰ࡞Β Ε͍ͯΔ͔͕೉қ౓ʹ௚݁ w֦ுతͳϥΠϒϥϦ͕࢖ΘΕ͍ͯΔͱͦΕ͚ͩ֬ೝൣ ғɺྔ͕γϯϓϧʹ૿͑Δҹ৅

ҰํͰʜ wϥΠϒϥϦΛར༻͍ͯ͠Δͱ͍͏ͷ͸ɺࣗલͰ֦ு͠ ͍ͯΔͱ͍͏ύλʔϯͷ/ഒָ

Ξοϓσʔτͯ͠ΈΑ͏ʂ

UIJBHPQSBEJPDUPQVT w3BJMTܥͰෳ਺σʔλϕʔεʹରԠͨ͜͠ͱ΋͋ͬͯ ׆ಈ͕ԼՐʹ wࢀߟIUUQTHJUIVCDPNUIJBHPQSBEJPDUPQVT wٯʹ͍͏ͱ3BJMTʹ͢Ε͹ෆཁʹͳΔ w3FBE8SJUF4QMJUUJOHͱͯ͠࢖͓ͬͯΓɺ͜Ε͸ඪ ४ػೳͰ·͔ͳ͑Δ

'DPNQPTJUF@QSJNBSZ@LFZT w։ൃ͸ࠓ΋͞Ε͍ͯΔ w3BJMTͷόʔδϣϯ͝ͱʹରԠόʔδϣϯ͕ଘࡏ w೚ҙͷόʔδϣϯʹରԠͨ͠΋ͷΛ࢖͑͹ऴΘΓʂ

·͕͍ͪ

Ξοϓσʔτͯ͠Έ͚ͨͲʜ wBMJBT@BUUSJCVUFΛղܾͰ͖ͳ͍ wΞοϓσʔτͷલޙͰൃߦ͞ΕΔΫΤϦʹҧ͍͕ग़Δ

BMJBT@BUUSJCVUFͬͯʁ w೚ҙͷଐੑΛผͷ໊લͰѻ͑ΔΑ͏ʹ͢Δػೳ w IUUQTBQJSVCZPOSBJMTPSHDMBTTFT"DUJWF.PEFM"UUSJCVUF.FUIPET$MBTT.FUIPETIUNM

BMJBT@BUUSJCVUFΛ࢖͏ཧ༝ wΧϥʔϛʔγϣοϓ͸೥Ҏ্ͷྺ࢙Λ࣋ͭαʔϏε w౰࣌ͷɺϑϨʔϜϫʔΫʢ3BJMTʣʹԊͬͨσʔλϞσϧͷઃܭ͕Ͱ͖ ͍ͯͳ͍Օॴ͕ଘࡏ͍ͯ͠Δ wͦ͜Λٵऩ͠ɺ୭΋͕ѻ͍΍͍͢Ϟσϧʹ͢ΔͨΊʹ BMJBT@BUUSJCVUFΛ࢖͏ wΞϓϦέʔγϣϯͱσʔλʹ͓͚ΔϥΠϑαΠΫϧͷҧ͍ͷӨڹ

BMJBT@BUUSJCVUFͰͷ໰୊ wҎԼͷΑ͏ͳΫΤϦ͕ղܾͰ͖ͳ͔ͬͨ wύονΛ͋ͯͯରԠ w6QTUSFBN΁ͷؐݩ͸·ͩͰ͢

ൃߦ͞ΕΔΫΤϦʹҧ͍͕ʜ wςετ΋ΦʔϧάϦʔϯʹͳΓ wݕূ؀ڥ্Ͱ2"Λߦ͍ɺҰ௨Γಈ࡞ݕূΛߦͬͨ wϦϦʔεΛ໨લʹ٧·ΔϦΫΤετΛൃݟ

ൃߦ͞ΕΔΫΤϦʹҧ͍͕ʜ wҎԼͷΑ͏ͳΫΤϦͷ݁Ռ͕ҙਤ͠ͳ͍΋ͷʹ wεϩʔΫΤϦʹͳͬͯ͠·ͬͨ wൃߦ͞ΕΔΫΤϦ·Ͱ͸֬ೝͰ͖͍ͯͳ͔ͬͨ

मਖ਼͸͚ͩ͜͜Ͱ͍͍ͷ͔ʁ

ࠩ෼ͷ֬ೝ͕େมʜ wൃߦ͞ΕΔ42-Λશͯ֬ೝ͢Δͷ͸େมʜ wػցతʹ൑அ͠ɺ໨ࢹͷ਺ΛݮΒͤͳ͍΋ͷ͔ʜ

͜ΕͰ֬ೝͰ͖Δ͔΋ʂ wςετ಺Ͱൃߦ͞ΕΔΫΤϦΛόʔδϣϯຖʹอଘ w"DUJWF3FDPSE-PH4VCTDSJCFSͰൃߦ͞ΕΔ42-Λऩू wલޙͷ݁ՌΛࣈ໘ͷΈͰൺֱ w4FUOFX <26&3:> ?4FUOFX <26&3:> w1SFQBSFE4UBUFNFOUͳΒ"45Λ࢖Θͳͯ͘΋͍͚Δ͔΋ʂ
wྫ4&-&$5 '30."8)&3&JE

΍ͬͯΈͨ

ͪΐͬͱμϝ͔΋ʜ wIUUQTHJUIVCDPNISZTETRBQʢSVCZHFNTPSHʹ͸ͳ͍Ͱ͢ʣ wDPNQPTJUF@QSJNBSZ@LFZTͷςετͰࢼͯ͠Έͨ w୯ͳΔࣈ໘Ͱͷൺֱͩͱεϖʔεɺύϥϝʔλͷҧ͍Έ͍ͨͳͷ͕ Ҿ͔͔ͬΓͩΊ͔΋ wͦ΋ͦ΋ςετσʔλͷ༻ҙͷΫΤϦͱ͔΋ೖ͍ͬͯͨΓʜ w݁Ռͷ(JTU͸ͪ͜Β wIUUQTCJUMZP;0,,

࠷ޙʹ wԣணͤͣʹࠩ෼ΛͪΌΜͱ֬ೝ͠·͠ΐ͏ wվΊͯ͜Ε͕ϥΠϒϥϦΛ࢖͏͜ͱͩͱೝࣝ w·ͩఘΊ͖Εͯͳ͍ͷͰ্ख͍ํ๏͸ͳ͍͔໛ࡧதͰ͢ wͳʹ͔஌͍ͬͯΔਓ͕͍ͨΒڭ͍͑ͯͩ͘͞ʂʂʂ

Rails アプリケーションのアップデートは大変 / Upgrading Rails appl...