©2019 Wantedly, Inc. Ruby gRPC Λ࢖ͬͯ ʮͪΌΜͱʯαʔϏεΛ࡞Δ Scramble Tech ৽ଔLT Dec 18, 2019 - Teppei Shintani

©2019 Wantedly, Inc. About me Teppei Shintani @euglena1215 • ’19 Wantedly new grads • Server side engineer • Wantedly Visit ืूػೳͷϚΠΫϩαʔϏεԽ • Ruby ❤ • ϚΠΫϩαʔϏεԽ΍͍͖ͬͯ

©2019 Wantedly, Inc. gRPCͱ͸ʁ ͱ͸ʁ

©2019 Wantedly, Inc. Google ͕࡞ͬͨ ݴޠඇґଘͷ௨৴ϓϩτίϧ gRPCͱ͸ʁ

©2019 Wantedly, Inc.

©2019 Wantedly, Inc. gRPC library ͸ Google ͕ ϝΠϯͰ։ൃΛߦ͍ͬͯΔ

©2019 Wantedly, Inc. ֤ݴޠͷ੒ख़౓͸ GoogleͷϞνϕʔγϣϯ࣍ୈ

©2019 Wantedly, Inc. Ruby gRPC ͷ੒ख़౓্͕͕Βͳ͍ Ruby gRPC ͷपลϥΠϒϥϦ͕ू·Βͳ͍

©2019 Wantedly, Inc. ݫ͍͠؀ڥͷ Ruby gRPC Λ࢖ͬͯ αʔϏεΛ࡞͍ͬͯͨ͘Ίʹ

©2019 Wantedly, Inc. •൚༻తͳ grpc interceptor •։ൃੜ࢈ੑ্͛ΔϥΠϒϥϦ •Ruby gRPC best practice ͷ໛ࡧ ΍͍ͬͯΔ͜ͱ

©2019 Wantedly, Inc. grpc interceptorͱ͸ʁ ൚༻తͳgrpc interceptor grpc interceptor ͱ͸௨৴(rpcݺͼ ग़͠)ͷલޙͰಛఆͷॲཧΛ૊ΈࠐΊ Δػߏɻ express, rack middleware ͱ͍ͩ ͍ͨಉ͡ͱ͍͑͹఻ΘΔਓ͸఻ΘΔ ͔΋

©2019 Wantedly, Inc. ࡞ͬͨ grpc interceptor ൚༻తͳgrpc interceptor • ΤϥʔΛ؂ࢹαʔϏεʹૹͬͯ͘ΕΔ͘Μ • Ruby/Rails ґଘͷΤϥʔΛ gRPC Τϥʔʹม׵͢Δ͘Μ • activerecord ͷ connection Λྑ͍ײ͡ʹ࢖͍ճ͘͢Μ •ΞΫηεϩάΛͱͬͯ೚ҙͷprovider΁ૹ৴͢Δ͘Μ by @south37 • newrelic ʹ metrics Λૹ৴ͯ͘͠ΕΔ͘Μ by @south37

©2019 Wantedly, Inc. Protocol Buffersͷੑ࣭ ։ൃੜ࢈ੑ্͛ΔϥΠϒϥϦ • field ͸શͯ optional • proto2 Ͱ͸ required field ͕ଘࡏ͕ͨ͠ɺproto3Ͱ͸શͯ optional ʹͳͬͨ • required ͳ field Λഇࢭͨ͘͠ͳͬͨͱ͖ʹޙํޓ׵Λҡ࣋͢Δͷ͕೉͍͠ ΞϓϦέʔγϣϯଆͷϩδοΫͰ null ͔Ͳ͏͔ΛνΣοΫ͢Δඞཁ͕͋Δ ΊͪΌͪ͘Ό໘౗

©2019 Wantedly, Inc. grpc_required_annotator ։ൃੜ࢈ੑ্͛ΔϥΠϒϥϦ https://github.com/euglena1215/grpc_required_annotator

©2019 Wantedly, Inc. Ruby gRPC best practice ͷ໛ࡧ • Rails ͷ஌ݟΛ Ruby gRPC ʹͲ͏ྲྀ༻͢Δ͔ • Rails controller ʹґଘ͍ͯ͠Δ gem ͸Ұ௨Γ࢖͑ͳ͍ • ͲΜͳઃܭʹ͢Δͱ͍͍ͷ͔ʁ • Rails Έ͍ͨʹ DB table ͱ API interface Λີ݁߹ͤͨ͘͞ͳ͍ • MVVM? Ͳ͜·Ͱ΍Δʁ

©2019 Wantedly, Inc. Ruby gRPC best practice ͷ໛ࡧ • Rails ͷ஌ݟΛ Ruby gRPC ʹͲ͏ྲྀ༻͢Δ͔ • Rails controller ʹґଘ͍ͯ͠Δ gem ͸Ұ௨Γ࢖͑ͳ͍ • ͲΜͳઃܭʹ͢Δͱ͍͍ͷ͔ʁ • Rails Έ͍ͨʹ DB table ͱ API interface Λີ݁߹ͤͨ͘͞ͳ͍ • MVVM? Ͳ͜·Ͱ΍Δʁ ͜͜ͷ݁࿦͸·ͩग़͍ͯͳ͍ɺɺɺ

©2019 Wantedly, Inc. Ruby gRPC ͕ී௨ʹ࢖͑Δ ঢ়ଶʹͳΔ·Ͱ΍͍͖ͬͯ