GraphQL GatewayをNode.jsで作ってる話

GraphQL GatewayΛ Node.jsͰ࡞ͬͯΔ࿩ haruhiko kobayashi 2018/12/6

!2 ࣗݾ঺հ Haruhiko Kobayashi Chief Tech Lead εϖʔεϚʔέοτ yahooͷόοΫΤϯυΤϯδχΞ ग़਎Ͱ͢ɻϑϩϯτΤϯυͱΠϯ
ϑϥ΋Ұ௨Γ͔ͬͨ͡ͷͪʹεϖʔ εϚʔέοτʹJoin

!3 Agenda

!4 Agenda • GraphQLͷ͝঺հ • Microservicesͱͷ૊Έ߹Θͤ • GraphQL Gateway on
Node.js

GraphQLͷ͝঺հ

!6 GraphQLͷ͝঺հ • Facebook͕ఏএͨ͠API࢓༷ • ڧ͍ܕγεςϜ • ࢀরܥ͸query • ߋ৽ܥ͸mutation
• RESTͱରൺͯ͠ޠΒΕΔࣄ͕ଟ͍ جຊతͳ࿩

!7 GraphQLͷ͝঺հ • Partial Response • Batch Request • graphdoc
• Graphiql σϑΥϧτػೳ

!8 Partial Response ࢦఆͨ͠σʔλͷΈऔಘ

!9 Batch Request 1౓ͷAPIίʔϧͰෳ਺ͷϦιʔεΛऔಘՄೳ

!10 graphdoc GraphQL API͔ΒυΩϡϝϯτࣗಈੜ੒

!11 graphdoc GraphQL API͔ΒυΩϡϝϯτࣗಈੜ੒ confidential

!12 GraphiQL GraphQLͷΫΤϦ࣮ߦ؀ڥ

!13 ಋೖ࣌ظ 2017೥ࠒ͔Β෦෼తʹಋೖ • Client: Apollo Client • Server: Rails
RESTͱൺ΂ͨ։ൃମݧ • FEɾΞϓϦ։ൃऀ͔Β૬౰ָʹͳͬͨͱ͍͏੠ • BEͱͯ͠΋ແବͳϖΠϩʔυ࡟ݮͳͲϝϦοτ͸ଟ͍

Microservicesͱͷ૊Έ߹Θͤ

!15 Microservicesͱͷ૊Έ߹Θͤ • ݕࡧαʔϏε • ΞΧ΢ϯταʔϏε • ϦίϝϯυαʔϏε • etc..
ڊେͳREST API͔ΒGraphQLαʔϏεΛ੾Γग़͠த

!16 Microservicesͱͷ૊Έ߹Θͤ API͕ଟ͗ͯ͢frontendͷਏΈ͕༧૝͞ΕΔ ݕࡧ (GraphQL) Ϩίϝϯυ (REST) ΞΧ΢ϯτ (GraphQL) ༧໿
(REST) FE

!17 Microservicesͱͷ૊Έ߹Θͤ GraphQL GatewayΛrubyͰ࡞ͬͨ ݕࡧ (GraphQL) Ϩίϝϯυ (REST) ΞΧ΢ϯτ (GraphQL)
༧໿ (REST) FE gateway

!18 Microservicesͱͷ૊Έ߹Θͤ Gateway͸remoteͷAPIʹϦΫΤετͯ݁͠ՌΛฦ͢

!19 Microservicesͱͷ૊Έ߹Θͤ resolverͰผAPIΛୟ͘ confidential

!20 Microservicesͱͷ૊Έ߹Θͤ resolverͰผAPIΛୟ͘

!21 Microservicesͱͷ૊Έ߹Θͤ ՝୊1: GraphQLͷܕΤϥʔʹͳΔ confidential • GraphQL͸ఆٛ͞Ε͍ͯͳ͍ܕ͕ΫΤϦʹؚ·ΕΔͱΤϥʔ ʹͳΔ

!22 Microservicesͱͷ૊Έ߹Θͤ ՝୊1: GraphQLͷܕΤϥʔʹͳΔ • GraphQLͷΫΤϦΛղੳͯ͠༨ܭͳ΋ͷΛফ͢ॲཧΛॻ͍ͯ ରԠ

!23 Microservicesͱͷ૊Έ߹Θͤ ՝୊2: Blocking IO confidential • ruby͸Blocking IO͕ඪ४ͷͨΊΫΤϦ͕૿͑ΔͱͲΜͲΜ஗ ͘ͳΔ

!24 Microservicesͱͷ૊Έ߹Θͤ ՝୊2: Blocking IO • ΫΤϦͷ࣮ߦΛ஗ԆධՁͯ͠1ͭͷΫΤϦʹ·ͱΊ࣮ͯߦ • graphql-batchͱ͍͏ϥΠϒϥϦͰରԠ͸Մೳ

!25 Microservicesͱͷ૊Έ߹Θͤ ՝୊2: Blocking IO • ̎ͭͷϦΫΤετΛ஗ԆධՁͤͯ͞1ͭͷϦΫΤετʹ߹੒

!26 Microservicesͱͷ૊Έ߹Θͤ ՝୊2: Blocking IO confidential • ̎ͭͷϦΫΤετΛ஗ԆධՁͤͯ͞1ͭͷϦΫΤετʹ߹੒

!27 Microservicesͱͷ૊Έ߹Θͤ ͜͜·Ͱͷ·ͱΊ • ৭ʑ͕Μ͹͕ͬͨෳ਺APIΤϯυϙΠϯτͱͳΔͱॲཧ͕ṫ ࡶʹͳΔ • rubyͷಛੑ͸GraphQL Gatewayʹ͸޲͍ͯͳͦ͞͏ •
Node.js΁ͷҠ২Λݕ౼͠͸͡ΊΔ

GraphQL Gateway on Node.js

!29 Apollo Server Node.jsͷGraphQL Server࣮૷ • jsͰGraphQL API࡞Δʹ͸σϑΝΫτελϯμʔυ • Gatewayͱͯ͠ಈ͘ػೳ΋ఏڙ͍ͯ͠Δ
• (ਖ਼֬ʹ͸graphql-toolsύοέʔδʹ)

!30 ՝୊1: GraphQLͷܕΤϥʔʹͳΔ ղܾࡦ: Schema Stitching • remoteͷGraphQL APIΛ͔͋ͨ΋localͷGraphQL APIͱͯ͠
ѻ͏ػೳͷ͜ͱ

!31 Schema Stitching ͭ·Γ͜Εͷ͜ͱͰ͢ ݕࡧ (GraphQL) Ϩίϝϯυ (REST) ΞΧ΢ϯτ (GraphQL)
༧໿ (REST) FE gateway

!32 ՝୊1: GraphQLͷܕΤϥʔʹͳΔ ղܾ: Schema Stitching confidential • remoteͷGraphQL APIΛlocalͷGraphQL
APIͱͯ͠ѻ͏

!33 ՝୊1: GraphQLͷܕΤϥʔʹͳΔ ղܾ: Schema Stitching • 1ͭͷqueryΛผͷAPI͔ΒऔಘͰ͖ΔΑ͏ʹͳΔ

!34 ՝୊1: GraphQLͷܕΤϥʔʹͳΔ ղܾ: Schema Stitching • rubyͰؤுͬͯ࡞࣮ͬͨ૷͕20ߦ΄Ͳͷ࣮૷ͰղܾͰ͖ͨ • ׬શʹٕज़࠾୒ͷࣦഊ..

!35 ՝୊2: Blocking IO ղܾ:NodeͷಛੑΛੜ͔ͯ͠Non-Blocking IOͰ௨৴ͯ͘͠ΕΔ confidential

!36 ՝୊2: Blocking IO ղܾ:NodeͷಛੑΛੜ͔ͯ͠Non-Blocking IOͰ௨৴ͯ͘͠ΕΔ

·ͱΊ

!38 • ݴޠͷಛੑΛݟۃΊͯϛυϧ΢ΣΞ͸ઃܭ͢΂͖ • GraphQL GatewayελοΫ΋javascriptͰ࣮૷

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