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Go/GAEͰ࡞Δ ۚ༥γεςϜ גࣜձࣾωΫετΧϨϯγʔ

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Agenda • ձࣾʹ͍ͭͯ • 4ͭͷʮ͍͍ͧʯ - Google App Engine(GAE)͸͍͍ͧ - Stackdriver Logging͸͍͍ͧ - Protocol Buffers͸͍͍ͧ - Golang͸͍͍ͧ

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ձࣾʹ͍ͭͯ

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גࣜձࣾ ωΫετΧϨϯγʔ

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Ӷҙ੡࡞தʂ

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Ծ૝௨՟ަ׵ۀ

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ϒϩοΫνΣʔϯ

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ۚ༥

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͓٬༷ͷ͓ۚΛ ͓༬͔Γ͢Δ

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ߴ͍҆શੑ

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ۀքͷྲྀΕ͸ૣ͍

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ߴ଎ͳ։ൃ͕ ٻΊΒΕΔ

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Server Side CONCEPT

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Environment is Easy Code is Simple

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؀ڥ͸؆୯ʹ ίʔυ͸୯७ʹ

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࢖༻ٕज़ • Google Cloud Platform - Google App Engine - Cloud SQL - Datastore - Cloud Functions • Golang - ϝΠϯͱͳΔϩδοΫ • Node.js - Cloud FunctionsͰͷϩάૢ࡞

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࢖༻ٕज़ • Google Cloud Platform - Google App Engine - Cloud SQL - Datastore - Cloud Functions • Golang - ϝΠϯͱͳΔϩδοΫ • Node.js - Cloud FunctionsͰͷϩάૢ࡞

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࢖༻ٕज़ • Google Cloud Platform - Google App Engine - Cloud SQL - Datastore - Cloud Functions • Golang - ϝΠϯͱͳΔϩδοΫ • Node.js - Cloud FunctionsͰͷϩάૢ࡞ &BTZ

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࢖༻ٕज़ • Google Cloud Platform - Google App Engine - Cloud SQL - Datastore - Cloud Functions • Golang - ϝΠϯͱͳΔϩδοΫ • Node.js - Cloud FunctionsͰͷϩάૢ࡞

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࢖༻ٕज़ • Google Cloud Platform - Google App Engine - Cloud SQL - Datastore - Cloud Functions • Golang - ϝΠϯͱͳΔϩδοΫ • Node.js - Cloud FunctionsͰͷϩάૢ࡞ 4JNQMF

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։ൃதʹൃݟͨ͠

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ʮ˓˓͸͍͍ͧʯ

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4ͭͷʮ͍͍ͧʯ • Google App Engine(GAE)͸͍͍ͧ • Stackdriver Logging͸͍͍ͧ • Protocol Buffers͸͍͍ͧ • Golang͸͍͍ͧ

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Google App Engine(GAE)͸ ͍͍ͧ

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Google App Engine • Google͕ఏڙ͍ͯ͠ΔPaaS • Python, Java, Node.js, PHP, Goʹඪ४ͰରԠ • ඇৗʹߴ͍Մ༻ੑ

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What is “͍͍ͧ”?

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ָ

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ΠϯϑϥߏஙͰͷ՝୊ • Blue/GreenσϓϩΠ͕࣮ݱͰ͖Δ͔ • ద੾ʹεέʔϧΞ΢τͰ͖Δ͔ • ηΩϡϦςΟʹ໰୊͕ͳ͍͔

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ΠϯϑϥߏஙͰͷ՝୊ • Blue/GreenσϓϩΠ͕࣮ݱͰ͖Δ͔ - GAEΛ࢖͏ͱղܾ • ద੾ʹεέʔϧΞ΢τͰ͖Δ͔ - GAEΛ࢖͏ͱղܾ • ηΩϡϦςΟʹ໰୊͕ͳ͍͔ - GAEΛ࢖͏ͱ෦෼తʹղܾ

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GAEͷߏ଄ ("&

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GAEͷߏ଄ ("& ϓϩδΣΫτʹͭ

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GAEͷߏ଄ ("& "1* ʮ4FSWJDFʯͱ͍͏୯Ґ

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GAEͷߏ଄ ("& "1* runtime: go api_version: go1.9 service: api handlers: - url: /.* secure: always script: _go_app

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GAEͷߏ଄ ("& "1* ໾ׂ͝ͱʹ෼ׂ

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GAEͷߏ଄ ("& "1* "ENJO

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GAEͷߏ଄ ("& "1* "ENJO #BUDI

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GAEͷߏ଄ ("& "1* ࣗಈͰ63-͕ৼΒΕΔ api-dot-project.appspot.com

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GAEͷߏ଄ ("& "1* ࣗ෼Ͱ63-Λ ৼΔ͜ͱ΋Ͱ͖Δ

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GAEͷߏ଄ ("& "1* WFSTJPO ʮ7FSTJPOʯͱ͍͏୯Ґ ͜ͷ୯ҐͰσϓϩΠ͢Δ

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GAEͷߏ଄ ("& "1* WFSTJPO WFSTJPO αʔϏεͷதʹ ෳ਺ͷόʔδϣϯ͕͋Δ

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GAEͷߏ଄ ("& "1* WFSTJPO WFSTJPO ࣗಈͰ63-͕ৼΒΕΔ version1-dot-api-dot- project.appspot.com

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GAEͷߏ଄ ("& "1* WFSTJPO WFSTJPO 7FSTJPOຖʹ
 τϥϑΟοΫΛ੍ޚ͢Δ

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GAEͷߏ଄ ("& "1* WFSTJPO WFSTJPO τϥϑΟοΫ

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GAEͷߏ଄ ("& "1* WFSTJPO WFSTJPO τϥϑΟοΫ

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GAEͷߏ଄ ("& "1* WFSTJPO WFSTJPO τϥϑΟοΫ

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GAEͷߏ଄ ("& "1* WFSTJPO WFSTJPO ʮ*OTUBODFʯͱ͍͏୯Ґ ͜ͷ୯ҐͰॲཧ͞ΕΔ

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GAEͷߏ଄ ("& "1* WFSTJPO WFSTJPO

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GAEͷߏ଄ ("& "1* WFSTJPO WFSTJPO େ͖͍τϥϑΟοΫ

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GAEͷߏ଄ ("& "1* WFSTJPO WFSTJPO େ͖͍τϥϑΟοΫ

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GAEͷߏ଄ ("& "1* WFSTJPO WFSTJPO খ͍͞τϥϑΟοΫ

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ΠϯϑϥߏஙͰͷ՝୊ • Blue/GreenσϓϩΠ͕࣮ݱͰ͖Δ͔ - GAEΛ࢖͏ͱղܾ • ద੾ʹεέʔϧΞ΢τͰ͖Δ͔ - GAEΛ࢖͏ͱղܾ • ηΩϡϦςΟʹ໰୊͕ͳ͍͔ - GAEΛ࢖͏ͱ෦෼తʹղܾ

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Blue/GreenσϓϩΠ • GAEͷόʔδϣϯͷػೳͰղܾ • τϥϑΟοΫͷ੾Γସ͑͸Graceful • ϝϯς༻όʔδϣϯࣄલʹσϓϩΠ͓͚ͯ͠͹
 ϝϯς੾Γସ͑΋Easy

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εέʔϧΠϯ/Ξ΢τ • ઃఆ͓͚͑ͯ͞͠͹উखʹ΍ͬͯ͘ΕΔ - Goͷ৔߹্ཱ͕ͪΓʹ਺ेϛϦඵ • εέʔϧΞ΢τ΋2छྨ͋Δ - େྔͷϦΫΤετͷͨΊͷAutomatic - όον౳௕͍ॲཧͷͨΊͷBasic

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ηΩϡϦςΟ • Πϯελϯε΁ͷ৵ೖ͸جຊతʹ͸ෆՄೳ • DDoS΋͋Δఔ౓·Ͱ͸GAEͰ΍ͬͯ͘ΕΔ • ϛυϧ΢ΣΞͷ੬ऑੑ໰୊͕ѹ౗తʹগͳ͍ - Google͕উखʹରԠͯ͘͠ΕΔ • ίʔυͷηΩϡϦςΟ͸ผ

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ΠϯϑϥߏஙͰ ೰·ͳ͍͍ͯ͘ʂ

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Google App Engine(GAE)͸ ͍͍ͧ

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Stackdriver Logging͸͍͍ͧ

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Stackdriver Logging • ϑϧϚωʔδυͳϩΪϯάαʔϏε • GCPͰग़ྗ͞ΕΔϩά͕શͯू໿͞ΕΔ • Pub/Sub(Queue)ʹ؆୯ʹྲྀͤΔ - Ճ޻΍௨஌ָ͕ • ϑΟϧλػೳ • GCPͰग़ྗ͞ΕΔϩά͕
 શͯू໿͞ΕΔ

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What is “͍͍ͧ”?

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GCPͰग़ྗ͞ΕΔ ϩά͕શͯू໿ ͞ΕΔ(3ճ໨)

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(ࣗ෼͕GCPΛ ৮ͬͯҰ൪ײಈͨ͠ αʔϏε)

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Կ΋ͯ͠ͳ͍ʂʂʂ

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ϩάऩूΛ ߟ͑ͳ͍͍ͯ͘ʂʂ

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Stackdriver Logging͸͍͍ͧ

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Protocol Buffers͸ ͍͍ͧ

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ಥવͰ͕࣭͢໰Ͱ͢

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APIυΩϡϝϯτ Ͳ͏ͯ͠·͔͢ʁ

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ࣾ಺Wiki

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Swagger Blueprint

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JSON Schema

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ϓϩδΣΫτͷ README

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΋͏1࣭ͭ໰Ͱ͢

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ϝϯςφϯε ͞Εͯ·͔͢……?

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APIυΩϡϝϯτͷ ՝୊

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࣮૷ͱͷဃ཭

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࣮૷ͱͷဃ཭ • υΩϡϝϯτΛॻ͔ͳͯ͘΋࣮૷͕Ͱ͖Δ • ࣮૷ͷมߋʹυΩϡϝϯτ͕௥ै͠ͳ͍ • υΩϡϝϯτΛهड़͢Δπʔϧͷशಘίετ • ࣮ࡍʹΫϥΠΞϯτͱαʔό͕΍ΓऔΓΛ
 ͠ͳ͍ͱҧ͍ʹؾ͚ͮͳ͍

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Protocol Buffers

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Protocol Buffers • Google͕։ൃΛ͍ͯ͠Δ
 ΠϯλʔϑΣʔεఆٛݴޠ(IDL) • γϯϓϧͰߴ଎ • ओཁͳݴޠʹରԠ͍ͯ͠Δ - Golang - Java - Swfit - Javascript(TypeScript)

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gRPC ≠ Protocol Buffers

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gRPC HTTP TCP HTTP2 Protocol Buffers JSON XML

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Protocol Buffers on HTTP

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4FSWFS $MJFOU {“msg”: “message”} +40/ )551

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4FSWFS $MJFOU 010100101001… #JOBSZ )551

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Protocol Buffers ͷ ߏ଄

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syntax = "proto3"; package echo; option go_package = "pb"; option java_package = ""; option swift_prefix = ""; message EchoRequest { string msg = 1; } message EchoResponse { string echo_msg = 1; } service EchoService { rpc Echo(EchoRequest) returns (EchoResponse) {} } echo.proto

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syntax = "proto3"; package echo; option go_package = "pb"; option java_package = ""; option swift_prefix = ""; message EchoRequest { string msg = 1; } message EchoResponse { string echo_msg = 1; } service EchoService { rpc Echo(EchoRequest) returns (EchoResponse) {} } echo.proto

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syntax = "proto3"; package echo; option go_package = "pb"; option java_package = ""; option swift_prefix = ""; message EchoRequest { string msg = 1; } message EchoResponse { string echo_msg = 1; } service EchoService { rpc Echo(EchoRequest) returns (EchoResponse) {} } echo.proto

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syntax = "proto3"; package echo; option go_package = "pb"; option java_package = ""; option swift_prefix = ""; message EchoRequest { string msg = 1; } message EchoResponse { string echo_msg = 1; } service EchoService { rpc Echo(EchoRequest) returns (EchoResponse) {} } echo.proto

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syntax = "proto3"; package echo; option go_package = "pb"; option java_package = ""; option swift_prefix = ""; message EchoRequest { string msg = 1; } message EchoResponse { string echo_msg = 1; } service EchoService { rpc Echo(EchoRequest) returns (EchoResponse) {} } echo.proto

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$ protoc \ —go_out=plugins=grpc:.\ *.proto

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type EchoRequest struct { Msg string `protobuf:"bytes,1,opt,name=msg" json:"msg,omitempty"` XXX_NoUnkeyedLiteral struct{} `json:"-"` XXX_unrecognized []byte `json:"-"` XXX_sizecache int32 `json:"-"` } type EchoServiceServer interface { Echo(context.Context, *EchoRequest) (*EchoResponse, error) } echo.pb.go

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type EchoRequest struct { Msg string `protobuf:"bytes,1,opt,name=msg" json:"msg,omitempty"` XXX_NoUnkeyedLiteral struct{} `json:"-"` XXX_unrecognized []byte `json:"-"` XXX_sizecache int32 `json:"-"` } type EchoServiceServer interface { Echo(context.Context, *EchoRequest) (*EchoResponse, error) } echo.pb.go

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type EchoRequest struct { Msg string `protobuf:"bytes,1,opt,name=msg" json:"msg,omitempty"` XXX_NoUnkeyedLiteral struct{} `json:"-"` XXX_unrecognized []byte `json:"-"` XXX_sizecache int32 `json:"-"` } type EchoServiceServer interface { Echo(context.Context, *EchoRequest) (*EchoResponse, error) } echo.pb.go

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type EchoRequest struct { Msg string `protobuf:"bytes,1,opt,name=msg" json:"msg,omitempty"` XXX_NoUnkeyedLiteral struct{} `json:"-"` XXX_unrecognized []byte `json:"-"` XXX_sizecache int32 `json:"-"` } type EchoServiceServer interface { Echo(context.Context, *EchoRequest) (*EchoResponse, error) } echo.pb.go

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public final class Echo { private Echo() {} public static final class EchoRequest extends com.google.protobuf.GeneratedMessageV3 implements { // @@protoc_insertion_point(message_implements:echo.EchoRequest) private EchoRequest() { msg_ = ""; } public static final int MSG_FIELD_NUMBER = 1; private volatile java.lang.Object msg_; public java.lang.String getMsg() { } } } Echo.java

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public final class Echo { private Echo() {} public static final class EchoRequest extends com.google.protobuf.GeneratedMessageV3 implements { // @@protoc_insertion_point(message_implements:echo.EchoRequest) private EchoRequest() { msg_ = ""; } public static final int MSG_FIELD_NUMBER = 1; private volatile java.lang.Object msg_; public java.lang.String getMsg() { } } } Echo.java

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public final class Echo { private Echo() {} public static final class EchoRequest extends com.google.protobuf.GeneratedMessageV3 implements { // @@protoc_insertion_point(message_implements:echo.EchoRequest) private EchoRequest() { msg_ = ""; } public static final int MSG_FIELD_NUMBER = 1; private volatile java.lang.Object msg_; public java.lang.String getMsg() { } } } Echo.java

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͜ΕΛ֤ݴޠͷ ϥΠϒϥϦΛ௨ͯ͠ Binaryʹ͢Δ

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What is “͍͍ͧ”?

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υΩϡϝϯτʹ࣮૷

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Protocol Buffers • ه๏͕Θ͔Γ΍͍͢ • σʔλͷදݱํ๏͕๛͔ - int, double, repeated(Array), Map… • ֤ݴޠͷίʔυͦͷ΋ͷΛੜ੒ͯ͠࢖͏ - มߋ͕͋ͬͨ৔߹Ϗϧυ࣌ʹؾ͚ͮΔ

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syntax = "proto3"; package echo; option go_package = "pb"; option java_package = ""; option swift_prefix = ""; message EchoRequest { string msg = 1; } message EchoResponse { string echo_msg = 1; } service EchoService { rpc Echo(EchoRequest) returns (EchoResponse) {} } echo.proto

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syntax = "proto3"; package echo; option go_package = "pb"; option java_package = ""; option swift_prefix = ""; message EchoRequest { string msg = 1; } message EchoResponse { string echo_msg = 1; } service EchoService { rpc Echo(EchoRequest) returns (EchoResponse) {} } echo.proto

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syntax = "proto3"; package echo; option go_package = "pb"; option java_package = ""; option swift_prefix = ""; message EchoRequest { string msg = 1; } message EchoResponse { string echo_msg = 1; } service EchoService { rpc Echo(EchoRequest) returns (EchoResponse) {} } echo.proto

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type EchoRequest struct { Msg string `protobuf:"bytes,1,opt,name=msg" json:"msg,omitempty"` XXX_NoUnkeyedLiteral struct{} `json:"-"` XXX_unrecognized []byte `json:"-"` XXX_sizecache int32 `json:"-"` } type EchoServiceServer interface { Echo(context.Context, *EchoRequest) (*EchoResponse, error) } echo.pb.go

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type EchoRequest struct { Msg string `protobuf:"bytes,1,opt,name=msg" json:"msg,omitempty"` XXX_NoUnkeyedLiteral struct{} `json:"-"` XXX_unrecognized []byte `json:"-"` XXX_sizecache int32 `json:"-"` } type EchoServiceServer interface { Echo(context.Context, *EchoRequest) (*EchoResponse, error) } echo.pb.go

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type EchoRequest struct { Msg string `protobuf:"bytes,1,opt,name=msg" json:"msg,omitempty"` XXX_NoUnkeyedLiteral struct{} `json:"-"` XXX_unrecognized []byte `json:"-"` XXX_sizecache int32 `json:"-"` } type EchoServiceServer interface { Echo(context.Context, *EchoRequest) (*EchoResponse, error) } echo.pb.go

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APIυΩϡϝϯτΛ Protocol Buffersʹ دͤΒΕΔʂʂ

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APIυΩϡϝϯτͱ ࣮૷ͷဃ཭Λ ؾʹ͠ͳ͍͍ͯ͘ʂ

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Protocol Buffers͸ ͍͍ͧ

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Golang͸͍͍ͧ

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What is “͍͍ͧ”?

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γϯϓϧ

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γϯϓϧͷ͍͍ͱ͜Ζ • ݴޠ࢓༷ͷཧղ͕༰қ • ฒߦॲཧͷѻ͍ - goroutine - channel • γϯϓϧͰ͋Δ͕Ώ͑ͷϏϧυ࣌ؒͷ୹͞

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͑ʁ

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ฉ͖๞͖ͨʁ

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۩ମతͳൺֱ

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func f(li []int) []int { ret := make([]int, 0) for _, n := range li { if n%2 == 0 { ret = append(ret, n) } } for i := range ret { ret[i] = ret[i] * 2 } return ret } Golang li.filter(n => n % 2 === 0) .map(n => n * 2) Javascript

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func f(li []int) []int { ret := make([]int, 0) for _, n := range li { if n%2 == 0 { ret = append(ret, n) } } for i := range ret { ret[i] = ret[i] * 2 } return ret } Golang li.filter(n => n % 2 === 0) .map(n => n * 2) Javascript ಡΈ΍͍͢ͷ͸Ͳͬͪʁ

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func f(li []int) []int { ret := make([]int, 0) for _, n := range li { if n%2 == 0 { ret = append(ret, n) } } for i := range ret { ret[i] = ret[i] * 2 } return ret } Golang li.filter(n => n % 2 === 0) .map(n => n * 2) Javascript ੜ࢈ੑ͕ߴ͍ͷ͸ʁ

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func f(li []int) []int { ret := make([]int, 0) for _, n := range li { if n%2 == 0 { ret = append(ret, n) } } for i := range ret { ret[i] = ret[i] * 2 } return ret } Golang li.filter(n => n % 2 === 0) .map(n => n * 2) Javascript ࣮ߦͷޮ཰͕͍͍ͷ͸ʁ

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func f(li []int) []int { ret := make([]int, 0) for _, n := range li { if n%2 == 0 { ret = append(ret, n) } } for i := range ret { ret[i] = ret[i] * 2 } return ret } Golang li.filter(n => n % 2 === 0) .map(n => n * 2) Javascript ίϯύΠϥ͕ղऍ͠΍͍͢ͷ͸ʁ

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ݴ͍͍ͨ͜ͱ

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ͲͬͪͰ΋͍͍

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ίʔυʹ͸ ”ҙਤ”Λ දݱ͢Δ΂͖

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ίʔυͷҙਤ • ͲΜͳه๏Ͱ͋ͬͯ΋ҙਤ͕ॏཁ • intͷ഑ྻͷۮ਺ͷ஋Λ2ഒʹ͢Δҙਤ͸Կ͔ʁ - ͨͩͷ਺஋ܭࢉ - UserͷεςʔλεͷભҠ - ళฮͷStarͷഒ཰

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func f(li []int) []int { ret := make([]int, 0) for _, n := range li { if n%2 == 0 { ret = append(ret, n) } } for i := range ret { ret[i] = ret[i] * 2 } return ret } Golang li.filter(n => n % 2 === 0) .map(n => n * 2) Javascript

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func f(li []int) []int { ret := make([]int, 0) for _, n := range li { if n%2 == 0 { ret = append(ret, n) } } for i := range ret { ret[i] = ret[i] * 2 } return ret } Golang li.filter(n => n % 2 === 0) .map(n => n * 2) Javascript ͲͪΒ΋ҙਤ͕ͳ͍

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func f(li []int) []int { ret := make([]int, 0) for _, n := range li { if n%2 == 0 { ret = append(ret, n) } } for i := range ret { ret[i] = ret[i] * 2 } return ret } Golang li.filter(n => n % 2 === 0) .map(n => n * 2) Javascript ͲͬͪͰ΋͍͍

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͡Ό͋ͳΜͰ Golang?

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ϏδωεϩδοΫʹ ूத͠΍͍͢

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Javascript • ഑ྻͷཁૉΛಛఆͷ৚݅ͰߜΓ͍ͨʂ - filter͕͋ΔΑʂ • ഑ྻͷཁૉશͯΛૢ࡞Λ͍ͨ͠ʂ - map͕͋ΔΑʂ • ഑ྻͷཁૉ͢΂ͯΛ࢖ͬͯ݁ՌΛ࡞Γ͍ͨʂ - reduce͕͋ΔΑʂ

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Javascript • ഑ྻͷཁૉΛಛఆͷ৚݅ͰߜΓ͍ͨʂ - filter͕͋ΔΑʂ • ഑ྻͷཁૉશͯΛૢ࡞Λ͍ͨ͠ʂ - map͕͋ΔΑʂ • ഑ྻͷཁૉ͢΂ͯΛ࢖ͬͯ݁ՌΛ࡞Γ͍ͨʂ - reduce͕͋ΔΑʂ Ͱ΋શ෦GPSϧʔϓͰ΋࣮ݱͰ͖ΔΑʂ

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Golang • ഑ྻͷཁૉΛಛఆͷ৚݅ͰߜΓ͍ͨʂ - forͱifΛ࢖͓͏ • ഑ྻͷཁૉશͯΛૢ࡞Λ͍ͨ͠ʂ - forΛ࢖͓͏ • ഑ྻͷཁૉ͢΂ͯΛ࢖ͬͯ݁ՌΛ࡞Γ͍ͨʂ - forΛ࢖͓͏

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ۚ༥γεςϜ • ۚ༥ۀքಛ༗ͷυϝΠϯ஌͕ࣝ๲େ • ΤϯδχΞ͸ۚ༥ͷઐ໳ՈͰ͸ͳ͍ • υϝΠϯ஌ࣝͷͨΊʹ࠷େݶ࣌ؒΛ࢖͍͍ͨ - ۚ༥ͷ஌ࣝͷΠϯϓοτ - υϝΠϯΤΩεύʔτͱͷ
 ίϛϡχέʔγϣϯ

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ΞϓϦέʔγϣϯΛ ॻ͘͜ͱʹ ूதͰ͖Δʂ

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Golang͸͍͍ͧ

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4ͭͷʮ͍͍ͧʯ • Google App Engine(GAE)͸͍͍ͧ • Stackdriver Logging͸͍͍ͧ • Protocol Buffers͸͍͍ͧ • Golang͸͍͍ͧ

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࠙਌ձͰ ͓࿩͠·͠ΐ͏ʂ

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Ұॹʹಇ͍ͯ ͘ΕΔਓ ืूதʂʂʂ