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Goによるスキーマ駆動開発
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atsushi-ishibashi
June 26, 2020
Technology
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Goによるスキーマ駆動開発
atsushi-ishibashi
June 26, 2020
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Transcript
GoʹΑΔεΩʔϚۦಈ։ൃʢԾʣ Finatext x ΤϒϦʔ ελʔτΞοϓ࠷લઢͷGoࣄྫ
ࣗݾհ - ੴڮ ३ࢤ • αʔόαΠυɺΠϯϑϥΛ୲ • ݩʑiOSͬͯͨ • εϚʔτϓϥεͷূ݊γεςϜΛ։ൃɺͦͷଞॾʑ
• terraform-provider-awsʹͦͦ͜͜ߩݙ • झຯαφ
εΩʔϚۦಈ։ൃͱ͍͑ • OpenAPIɺgRPCɺGraphQLͷ3ͭͰΑ͘ޠΒ ΕΔ • ࠓճGraphQLͷؚ·Ε·ͤΜ • gRPCͪΐͬͱ͚ͩ • OpenAPIΛϝΠϯͰ͠·͢
BaaSͰͷΤϯυϙΠϯτߏਤ ALB HTTP + JSON NLB gRPC ೝՄαʔϏε จܥ Ձ֨ܥ
ޱ࠲ܥ ػೳϨΠϠʔͱ͍͏ΑΓ͔ υϝΠϯͰ͚ͯΔ
gRPCʁ • ෦తͳೝՄαʔϏεͰར༻͍ͯ͠Δ • ͜ͷೝՄϏδωεϩδοΫدΓͷͷ • ଟͷαʔό͕ΫϥΠΞϯτͱͯ͠ར༻͢Δ • ΫϥΠΞϯτίʔυੜͰ͖Δͷخ͍͠ •
ϦΫΤετ͝ͱʹೝՄαʔϏεʹ͍߹ΘͤΔͷͰߴύϑΥʔϚϯεخ͠ ͍ خ͍͜͠ͱ ΊΜͲ͍͘͜͞ͱ • ΞΫηεϩάͷूܭϝτϦΫεͳͲʹϚωʔδυɾαʔϏε͑ͳ͍ • HTTP-JSONͷ߹ALB-TargetGroupͷΈ߹ΘͤͰHTTP StatusCode ͳͲΛCloudWatchMetricsͰूܭͯ͠Δ • gRPCͩͱinterceptorೖΕͯΞϓϦέʔγϣϯϩάʹग़ͯ͠ؤுͬͨΓɺ PrometheusͬͨΓʁ • ·ͩ֎ʹग़ͤΔAPIυΩϡϝϯτੜͰ͖ͳ͍ͱࢥ͏
OpenAPIͷ۩ମతͳར༻ํ๏ • ن֨Խ͞ΕͨAPIυΩϡϝϯτ͕࡞ΕΔ • mockੜͰ͖ͯϑϩϯτ͕ಉ࣌ਐߦͰ։ൃ ਐΊΕΔ • ίʔυੜՄೳ
ΤσΟλ Swagger Editor Stoplight Studio • ެࣜ • GUIΤσΟλ •
ෳϑΝΠϧฤूՄೳ • previewΆ͍(form)ͷ͔ΒฤूͰ ͖Δ
APIυΩϡϝϯτੜ Dockerfile ίϯςφ্ཱͪ͛
• ϩʔΧϧͰཱͯΕΔ͕ɺෳΤϯυϙΠϯτΛ ݟΔͷେมͳͷͰɺϒϥβͰURL͚ͯϗε ςΟϯά͞ΕͯΔͱศརͦ͏ • APIαʔόͱಉ͡gitϨϙδτϦʹswagger-ui༻ͷ DockerfileΛ࣋ͭ • ECSͰϗεςΟϯά •
AWS CodePipelineͰ։ൃڥʹϦϦʔε ։ൃڥʹϦϦʔε
Mockίϯςφͷੜ apisproutͷDockerfile Mock͔ΒͷϨεϙϯε
• ϩʔΧϧͰཱͯΕΔ͕ʢҎԼུ • APIαʔόͱಉ͡gitϨϙδτϦʹmock༻ ͷDockerfileΛ࣋ͭ • ECSͰϗεςΟϯά • AWS CodePipelineͰ։ൃڥʹϦϦʔε
UIͱಉ͘͡։ൃڥʹϦϦʔε
ίʔυੜ • routergorillaͰੜ͞ΕΔ • FinatextͰechoΛͬͯΔͨΊ modelͷΈநग़
ਖ਼͋Μ·Γخ͘͠ͳ͍… • APIͷϦΫΤετʹόϦσʔγϣϯ͍ͨ͠ • ͪΖΜopenapiύοέʔδʹॻ͚ͳ͍ • ؔ࡞ͬͯҾʁ • ໊લۭؒʹؾΛ͚ͭΔඞཁ͋Γ •
ผͷstructʹຒΊࠐΉʁ • ྑ͍͚ͲΊΜͲ͍͘͞
ଥڠతίʔυੜ • Swagger UI͔ΒJSONΛCtrl+C • ChimeraCoder/gojsonͰJSON͔ΒgoͷstructΛੜ • ͦΕΛ͋ͬͯ΄͍͠goϑΝΠϧʹషΔʂ
ͦͦεΩʔϚۦಈͷϞνϕͬͯʁ αʔόˠϑϩϯτͱ͍͏։ൃͷྲྀΕ ↓ ը໘͕ग़དྷ্͕ͬͯ͘ΔͱશํҐ͔ΒϑΟʔυόοΫ͕དྷΔ ↓ ϑϩϯτ͕UI͍ͯ͠Δ͏ͪʹαʔό৭ʑվम͢Δʢ߹ʹΑͬͯ APIมߋ… ↓ ϑϩϯτਵ͢Δ͕ɺUIζϨΔ… ͱϑϩϯτʹγϫدͤߦ͖͕ͪ
ͳͷͰϑϩϯτͱαʔό͕ಉ࣌ฒߦͰਐΊΕΔΑ͏ʹͱΓ͋͑ͣҰ୴API ༷ΛܾΊΔ͔͠ͳ͍ ͍ͭͰʹن֨Խ͞ΕͨAPIυΩϡϝϯτͱMock͕Ͱ͖Δͷศར
εΩʔϚΛܾΊͨ͘ͳ͍ཧ༝ Userͱ͍͏ߏମ͕͋Δͱ͢Δɻ ͦΕʹNameAgeͱ͍ͬͨଐੑΛՃ͍ͯ͘͠ɻ ຊͲ͕ͬͪઌʹ͋Δʁʁ
ଐੑ͕ઌͩͱࢥ͏ ଐੑΛʹྫ͑ΔͱɺߏମʢεΩʔϚʣ࠲ ։ൃதʹ֤ؔऀ͕ΛͲΜͲΜݟ͚ͭͯ͘Δ ͦͷࡍʹ࠲ΛΧνοͱܾΊ͗͢Δͱ৽͕͘͠ݟ͔ͭͬͨͱ͖ʹۙͷ ࠲ʹΈࠐΜͰ͠·͏
εΩʔϚʢԾʣۦಈ։ൃͷεεϝ • ͱΓ͋͑ͣલʹਐΉͨΊʹAPIεΩʔϚʢԾʣ Λ࡞Δ • ৽ن։ൃ࣌ޓੑΕͯΨϯΨϯഁյత มߋ͢͠ • ͍ͭͰʹAPIυΩϡϝϯτͱMockͰ͖Δͱศ རͩΑͶ
͝ਗ਼ௌ͋Γ͕ͱ͏͍͟͝·ͨ͠