gRPC+ProtocolBuffersでの通信処理を実装して感じたこと / Things I felt using grpc

実際の開発でgRPC+ProtocloBuffersを導入したので、導入方法の簡単な説明と実際に導入してどんな事を感じたか、どんな事が起きたかをまとめました。

発表時はSkipした実装の詳細な説明が載っているので、実装の際に参考にしていただければと思います。

Transcript

1. 
   dais-sasa | Yappli, inc.
   gRPC+ProtocolBuffers
   
   
   #yappliculture
   

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2. About us
   #yappliculture
   

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3. dais-sasa
   • #%!" '
   • Android
   •
   $&(
   • MotionLayout
   #yappliculture
   

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4. dais-sasa
   • 48*/'0 # %;
   • Android&
   • &"!& )7
   • ., $&MotionLayout
   -( :9563
   
   12+
   #yappliculture
   

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6. 
   #yappliculture
   

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7. 1.
   2. gRPCProtocolBuffers
   
   3. Android!"
   4.
   5.
   6.
   #yappliculture
   

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8. 
   #yappliculture
   

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9. gRPC+ProtocolBuffers
   #yappliculture
   

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10. •4*)>?$7
    
    ;%
    •JSON+10E& "/A5.
    @6 D8'2
    •! #:-<=(9
    B
    gRPC<=3+F,C
    
    #yappliculture
    

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11. 
    
    #yappliculture
    

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12. API"#)*
    
    $&(,
    
    %API'-+
    !
    
    #yappliculture
    

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13. %!$
    %!
    "#
    
    #yappliculture
    

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14. gRPC
    ProtocolBuffers
    
    #yappliculture
    

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15. gRPC
    #yappliculture
    

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16. •Google" RPC
    
    •Protocol Buffers
    !
    
    #yappliculture
    

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17. ProtocolBuffers
    #yappliculture
    

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18. •Google*2
    0-(/)
    
    %$"#
    •.proto"&4#1+
    •(JSON3),'
    !!.
    #yappliculture
    

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19. gRPC+ProtocolBuffers
    
    
    #yappliculture
    

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20. .proto
    #yappliculture
    

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21. .proto
    
    (Go))
    Android
    (Java)
    iOS
    (swiftObjective-C)
    gRPC
    
    $*'&
    • $*'&
    • (%
    !#Entity
    • (% "
    !
    
    

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22. Android
    
    #yappliculture
    

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23. 
    #yappliculture
    

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24. build.gradle()
    buildscript {
    repositories {
    jcenter()
    mavenCentral()
    }
    dependencies {
    classpath 'com.android.tools.build:gradle:3.2.1'
    classpath 'com.google.protobuf:protobuf-gradle-plugin:0.8.0'
    }
    }
    #yappliculture
    

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25. build.gradle(app)
    apply plugin: 'com.google.protobuf'
    dependencies {
    ~ ~
    def grpc_version = "1.17.1"
    api "io.grpc:grpc-okhttp:$grpc_version"
    api "io.grpc:grpc-protobuf-lite:$grpc_version"
    api "io.grpc:grpc-stub:$grpc_version"
    api 'javax.annotation:javax.annotation-api:1.3.2'
    }
    #yappliculture
    

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26. protobuf {
    protoc {
    artifact = "com.google.protobuf:protoc:3.1.0"
    }
    plugins {
    javalite {
    artifact = "com.google.protobuf:protoc-gen-javalite:3.0.0"
    }
    grpc {
    artifact = "io.grpc:protoc-gen-grpc-java:1.17.1"
    }
    }
    generateProtoTasks {
    all().each { task ->
    task.plugins {
    javalite {}
    grpc {
    option 'lite'
    }
    }
    }
    }
    }
    #yappliculture
    

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27. protobuf {
    protoc {
    artifact = "com.google.protobuf:protoc:3.1.0"
    }
    plugins {
    javalite {
    artifact = "com.google.protobuf:protoc-gen-javalite:3.0.0"
    }
    grpc {
    artifact = "io.grpc:protoc-gen-grpc-java:1.17.1"
    }
    }
    generateProtoTasks {
    all().each { task ->
    task.plugins {
    javalite {}
    grpc {
    option 'lite'
    }
    }
    }
    }
    }
    
    block
    block.proto
    
    skip
    #yappliculture
    

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28. protobuf {
    protoc {
    artifact = "com.google.protobuf:protoc:3.1.0"
    }
    plugins {
    javalite {
    artifact = "com.google.protobuf:protoc-gen-javalite:3.0.0"
    }
    grpc {
    artifact = "io.grpc:protoc-gen-grpc-java:1.17.1"
    }
    }
    generateProtoTasks {
    all().each { task ->
    task.plugins {
    javalite {}
    grpc {
    option 'lite'
    }
    }
    }
    }
    }
    
    
    
    path = '/usr/local/bin/protoc’
    skip
    #yappliculture
    

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29. protobuf {
    protoc {
    artifact = "com.google.protobuf:protoc:3.1.0"
    }
    plugins {
    javalite {
    artifact = "com.google.protobuf:protoc-gen-javalite:3.0.0"
    }
    grpc {
    artifact = "io.grpc:protoc-gen-grpc-java:1.17.1"
    }
    }
    generateProtoTasks {
    all().each { task ->
    task.plugins {
    javalite {}
    grpc {
    option 'lite'
    }
    }
    }
    }
    }
    #+&'
    gRPC !
    $"&'*,
    
    Java ( plugin )%
    skip
    #yappliculture
    

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30. protobuf {
    protoc {
    artifact = "com.google.protobuf:protoc:3.1.0"
    }
    plugins {
    javalite {
    artifact = "com.google.protobuf:protoc-gen-javalite:3.0.0"
    }
    grpc {
    artifact = "io.grpc:protoc-gen-grpc-java:1.17.1"
    }
    }
    generateProtoTasks {
    all().each { task ->
    task.plugins {
    javalite {}
    grpc {
    option 'lite'
    }
    }
    }
    }
    }
    grpc block
    
    (grpc-java)
    skip
    #yappliculture
    

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31. protobuf {
    protoc {
    artifact = "com.google.protobuf:protoc:3.1.0"
    }
    plugins {
    javalite {
    artifact = "com.google.protobuf:protoc-gen-javalite:3.0.0"
    }
    grpc {
    artifact = "io.grpc:protoc-gen-grpc-java:1.17.1"
    }
    }
    generateProtoTasks {
    all().each { task ->
    task.plugins {
    javalite {}
    grpc {
    option 'lite'
    }
    }
    }
    }
    }
    grpc-javaAndroid
    javalite blockAndroid
    
    skip
    #yappliculture
    

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32. protobuf {
    protoc {
    artifact = "com.google.protobuf:protoc:3.1.0"
    }
    plugins {
    javalite {
    artifact = "com.google.protobuf:protoc-gen-javalite:3.0.0"
    }
    grpc {
    artifact = "io.grpc:protoc-gen-grpc-java:1.17.1"
    }
    }
    generateProtoTasks {
    all().each { task ->
    task.plugins {
    javalite {}
    grpc {
    option 'lite'
    }
    }
    }
    }
    }
    
    
    all(): protoc
    .plugins:
    
    option:
    
    skip
    #yappliculture
    

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33. build.gradle
    
    
    •https://qiita.com/kobaken0029/items/8e2945
    f6b4ed6a2fa5ae
    •https://github.com/google/protobuf-gradle-
    plugin
    #yappliculture
    

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34. 
    
    #yappliculture
    

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35. 1. app/src/main/proto.proto
    
    
    2.
    3. app/build/generated/source/proto
    
    #yappliculture
    

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36. syntax = "proto3";
    message CreateRequest {
    enum Sex {
    INVALID = 0; //
    MALE = 1; //
    
    FEMALE = 2; //
    
    }
    int32 age = 1; //
    string name = 2; //
    Sex sex = 3; //
    
    }
    message CreateResponse {
    User user = 1; // User
    }
    /* */
    service UserService {
    //
    rpc Create(CreateRequest) returns (CreateResponse);
    /* */
    }
    
    user.proto
    

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37. public final class UserOuterClass {
    public static final class CreateRequest … {
    public enum Sex … {
    INVALID, MALE, FEMALE
    }
    private int age_;
    public int getAge()
    private String name_;
    public String getName()
    private Sex sex_;
    public Sex getSex()
    public Builder newBuilder()
    public Builder toBuilder()
    public static final class Builder … {
    public Builder setAge(int value)
    public Builder setName(String value)
    public Builder setSex(Sex value)
    }
    }
    }
    

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38. public final class UserServiceGrpc {
    public static UserServiceBlockingStub newBlockingStub(Channel channel)
    public static UserServiceFutureStub newFutureStub(Channel channel)
    public static final class UserServiceBlockingStub … {
    public CreateResponse create(CreateRequest request)
    }
    public static final class UserServiceFutureStub … {
    public CreateResponse create(CreateRequest request)
    }
    }
    #yappliculture
    

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39. 
    #yappliculture
    

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40. •$%#)
    1. Channel!(
    2. Channel" Stub!(
    3. Request!(
    4. Stub,Request'+
    *&
    . -
    
    #
    #yappliculture
    

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41. // Channel
    val channel = ManagedChannelBuilder.forAddress("10.0.2.2", 443)
    .build()
    // UserServiceStub
    val stub = UserServiceGrpc.newBlockingStub(channel)
    // Request
    val createRequest = CreateRequest.newBuilder()
    .setAge(33)
    .setName("dais-sasa")
    .setSex(Sex.MALE)
    .build()
    //
    val createResult = stub.create(createRequest)
    #yappliculture
    

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42. // Channel)0
    val channel = ManagedChannelBuilder.forAddress("10.0.2.2", 443)
    .build()
    // UserService Stub)0
    val stub = UserServiceGrpc.newBlockingStub(channel);
    // Request)0
    val createRequest = CreateRequest.newBuilder()
    .setAge(33)
    .setName(”dais-sasa")
    .setSex(Sex.MALE)
    .build();
    // +&
    val createResult = stub.create(createRequest)
    -#(%0
    5
    279$"8
    ; !
    usePlaintext(): http6/&
    userAgent(agent: String): userAgent9$
    143 *7forTarget(target: String)
    
    "8
    .'target ! #,
    dns:///:
    skip
    #yappliculture
    

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43. // Channel $
    val channel = ManagedChannelBuilder.forAddress("10.0.2.2", 443)
    .build()
    // UserServiceStub $
    val stub = UserServiceGrpc.newBlockingStub(channel)
    // Request $
    val createRequest = CreateRequest.newBuilder()
    .setAge(33)
    .setName(”dais-sasa")
    .setSex(Sex.MALE)
    .build();
    // "
    val createResult = stub.create(createRequest);
    ServiceGrpc
    
    !
    .protoservice block %$
    newStub(channel: Cnannel)
    Stub $()%$)
    BlockingStub'
    FutureStub('
    skip
    #yappliculture
    

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44. // Channel
    val channel = ManagedChannelBuilder.forAddress("10.0.2.2", 443)
    .build()
    // UserServiceStub
    val stub = UserServiceGrpc.newBlockingStub(channel);
    // Request
    val createRequest = CreateRequest.newBuilder()
    .setAge(33)
    .setName(”dais-sasa")
    .setSex(Sex.MALE)
    .build()
    //
    val createResult = stub.create(createRequest)
    Entity.proto
    
    message block
    skip
    #yappliculture
    

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45. 
    #yappliculture
    

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46. 
    
    
    #yappliculture
    

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47. •
    •
    •
    
    
    #yappliculture
    

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48. 
    skip
    #yappliculture
    

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49. •ChannelStub&$!
    #
    •ChannelStub &
    
    •"%gRPC
    
    skip
    #yappliculture
    

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50. 
    
    skip
    #yappliculture
    

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51. •#$!"
    & %
    Google'
    (
    
    •
    skip
    #yappliculture
    

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52. 
    
    
    #yappliculture
    

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53. 
    
    
    
    #yappliculture
    

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54. 
    #yappliculture
    

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55. API View
    
    ViewClasshgadlk;kjralghal;;eur()
    #yappliculture
    

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56. API $'View&
    View+Class& hgadlk;kjralghal;;eur(!,*-#()
    ("%
    )
    > Proto)
    #yappliculture
    

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57. API'"%(",1View0
    View!&$7Class0hgadlk;kjralghal;;eur()869+3)
    (*.
    )
    
    > Proto# &5
    (2:4Java# &-)
    …(/)869+3)
    #yappliculture
    

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58. API)$'*$.4 View3
    View#(&:Class3hgadlk;kjralghal;;eur(+;9<-6)
    (,1 )
    > Proto%!"(8
    (5=7
    Java%!"(0)
    …(2+;9<-6)
    />
    #yappliculture
    

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59. API)$'*$.4 View3
    View#(&:Class3hgadlk;kjralghal;;eur(+;9<-6)
    (,1 )
    > Proto%!"(8
    (5=7
    Java%!"(0)
    …(2+;9<-6)
    />
    #yappliculture
    

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60. 
    #yappliculture
    

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61. Y
    
    > protoPR
    #yappliculture
    

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62. Y0%'35.*
    > proto$(PR6
    
    (PR-) !#47
    > PR12+ &)",/
    #yappliculture
    

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63. Y8#+.;>61!
    
    > proto*"$/PR ?
    (PR 5) !&)=A
    > PR9:3%-0( 47
    (9:3%-0( 5)
    OK@2PR9:C#yappliculture
    

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64. Y9$,/=A72"
    > proto+#%0PR!B
    (PR!6) "'*@ D
    > PR:<4&.1)!58
    (:<4&.1)!6)
    OKC3PR:<F>E-(
    
    ;?
    #yappliculture
    

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65. $&',27B?
    •.proto *. !)9 A>
    <-
    •API )(%+",
    15=3/8@:7
    •.proto * #;06
    
    4
    #yappliculture
    

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66. 
    
    
    #yappliculture
    

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67. •.proto
    %
    
    •API!Entity.proto
    '
    
    •Android 8.0"TLS $&
    %
    #yappliculture
    

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68. .proto
    
    
    #yappliculture
    

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69. %1,
    proto-
    .0&*"5
    
    #3()24$/'
    ↓
    +!(
    24
    #yappliculture
    

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70. gRPC.proto$)2<86
    
    '& !";5/#
    2</
    Ø%(((..proto$)37
    
    41-%(#'
    ;5
    Ø0>:* #'
    
    proto$)+=,
    ((937
    #yappliculture
    

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71. API Entity
    .proto
    
    
    
    #yappliculture
    

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72. !*(
    
    ,
    +
    %$
    ↓
    .- #/
    '
    "&)
    #yappliculture
    

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73. 
    User
    
    
    #yappliculture
    

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74. Entity
    user.prof.address.prefectures = ""
    #yappliculture
    

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75. syntax = “proto3”;
    message User {
    Prof prof = 1; //
    }
    message Prof {
    Address address = 1; //
    }
    message Address {
    string prefectures = 1; //
    
    }
    #yappliculture
    

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76. gRPC
    Entity
    // Builder
    
    val userBuilder = user.toBuilder()
    val profBuilder = user.prof.toBuilder()
    val addressBuilder = user.prof.address.toBuilder()
    //
    
    addressBuilder.prefectures = ""
    profBuilder.address = addressBuilder.build()
    userBuilder.prof = profBuilder.build()
    // API
    
    userBuilder.build()
    #yappliculture
    

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77. •gRPC" Entitysetter
    
    •Entity !Builder
    Builder #$
    
    
    #yappliculture
    

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78. •%2/
    '-:3
    •48+1 object
    8+* object
    7 object &!#60
    
    %2/
    1$
    "(.9
    5,)
    #yappliculture
    

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79. Android 8.0 TLS
    
    
    #yappliculture
    

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80. )&
    usePlaintext()
    $'(%#
    ↓
    
    
    '"
    
    Android 8.0!
    #yappliculture
    

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81. •Android 8.0.5&+"*$
    (-ALPN3
    •%9ALPN;/0
    61<7)>
    • 4)'! ALPN
    ,#:2
    Android 8.0.5?<7)
    =8
    
    #yappliculture
    

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82. ALPN
    
    
    • !
    
    • No ALPN negotiated$ ALPN
    
    ALPN "#
    $ openssl s_client -alpn h2 -connect :
    #yappliculture
    

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83. 
    #yappliculture
    

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84. •/#
    0gRPC
    *5 ".
    •$!)4'3
    +(1,26
    -1& gRPC+ProtocolBuffers
    * %
    #yappliculture
    

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85. Fin.
    

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