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
2. About us #yappliculture
3. dais-sasa • #%
   !"  ' • Android  •  $&( • MotionLayout #yappliculture
4. dais-sasa • 48
   */'0 # %; • Android& • &"!& )7 • ., $&MotionLayout -( :9563   12 + #yappliculture
6. 
   #yappliculture
7. 1.  2. gRPC
   ProtocolBuffers  3. Android !" 4.   5.   6.  #yappliculture
8. 
    #yappliculture
9. gRPC+ProtocolBuffers
    #yappliculture
10. •4*)>?$7  ;%  •JSON+10E& "/A5. @6  D8'2  •! #:-
    <=(9 B gRPC<= 3+F,C  #yappliculture
11.  
     
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12. API"#)*  $&(,    %API'-+ 
    !    #yappliculture
13.  %!$
     %!    "#    #yappliculture
14. gRPC
    ProtocolBuffers  #yappliculture
15. gRPC
    #yappliculture
16. •Google" RPC    •Protocol Buffers
       !  #yappliculture
17. ProtocolBuffers
    #yappliculture
18. •Google*2  0-(/)  %$"# •.proto"&4 #1+  •(JSON 3 ),
    ' !
    !. #yappliculture
19. gRPC+ProtocolBuffers     
    #yappliculture
20. .proto
     #yappliculture
21. .proto  (Go)) Android (Java) iOS (swift
    Objective-C) gRPC  $*'& • $*'&  • (%  !#Entity • (% " ! 
    
    
    
      
22. Android
     #yappliculture
23. 
     #yappliculture
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
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
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
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
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
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
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
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
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
33.  build.gradle 
     •https://qiita.com/kobaken0029/items/8e2945 f6b4ed6a2fa5ae •https://github.com/google/protobuf-gradle- plugin #yappliculture
34. 
     #yappliculture
35. 1. app/src/main/proto.proto   2.    3. app/build/generated/source/proto
     #yappliculture
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
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) } } }
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
39. 
     #yappliculture
40. •$% #) 1. Channel!( 2. Channel" Stub!( 3. Request!( 4. Stub,Request' + *& . -  # 
      #yappliculture
41. // Channel val channel = ManagedChannelBuilder.forAddress("10.0.2.2", 443) .build() // UserService
    Stub 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
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
43. // Channel $ val channel = ManagedChannelBuilder.forAddress("10.0.2.2", 443) .build() // UserService Stub $ 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 
    
    &#!  .proto service block %$ newStub(channel: Cnannel) Stub $()%$) BlockingStub '&# FutureStub ('&# skip #yappliculture
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
45. 
    #yappliculture
46. 
    
     #yappliculture
47. • • •
    
    
    
       #yappliculture
48. 
     skip #yappliculture
49. •Channel Stub&
    $! # •Channel Stub &   •"%gRPC   skip #yappliculture
50. 
    
    skip #yappliculture
51. •#$ !"
    & %   
    Google' (     •    skip #yappliculture
52. 
    
    
      
      #yappliculture
53.        
    #yappliculture
54. 
     #yappliculture
55. API   View   View 
    Class hgadlk;kjralghal;;eur() #yappliculture
56. API $'View&  View+Class& hgadlk;kjralghal;;eur(!,*-#() ("%  
    ) 
    > Proto) #yappliculture
57. API'"%(",1View0 View!&$7Class0hgadlk;kjralghal;;eur()869+3) (*. )   > Proto# &5 (2:4Java# &-) 
      …(/)869+3) #yappliculture
58. API)$'*$.4 View3  View#(&:Class3hgadlk;kjralghal;;eur(+;9<-6) (,1  )   > Proto%!"(8 (5=7 Java%!"(0) 
      …(2+;9<-6) /> #yappliculture
59. API)$'*$.4 View3  View#(&:Class3hgadlk;kjralghal;;eur(+;9<-6) (,1  )   > Proto%!"(8 (5=7 Java%!"(0) 
      …(2+;9<-6) /> #yappliculture
60. 
     #yappliculture
61. Y  
      > protoPR #yappliculture
62. Y0%'35.* 
      > proto$(PR6  (PR-) !#4 7   > PR12+ &)",/ #yappliculture
63. Y8#+.;>61! 
      > proto*"$/PR ?  (PR 5) !&)= A > PR9:3%-0( 47 (9:3%-0( 5) OK@2
    PR9:C<B
    ,'  #yappliculture
64. Y9$,/=A72" 
     > proto+#%0PR!B  (PR!6) "'*@ D   > PR:<4&.1)!58 (:<4&.1)!6) OKC3
    PR:<F>E
    -(   ;? #yappliculture
65. $&',27B? •.proto *. !)9 A> <- •API )(%
    +", 15= 3/8@:7  •.proto * #;06  4 #yappliculture
66.   
    #yappliculture
67. •.proto
     %   •API!Entity.proto '   •Android 8.0"TLS&# $& %   #yappliculture
68. .proto  
        #yappliculture
69. %1, proto
    - .0&*"5  #3()24 $/' ↓ +!(   24  #yappliculture
70. gRPC.proto$)2<86  '& !";5/
    # 2</ Ø%(((..proto$)37  41
    -%(#' ;5 Ø0>:* #'  proto$)+=, ((937   #yappliculture
71. API 
    Entity .proto    #yappliculture
72. !*( 
     , +   %$ ↓  .- #/ ' "&) #yappliculture
73.  User  
      #yappliculture
74. 
    Entity user.prof.address.prefectures = "
    " #yappliculture
75. syntax = “proto3”; message User { Prof prof = 1; // 
     } message Prof { Address address = 1; //  } message Address { string prefectures = 1; //  } #yappliculture
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
77. •gRPC " Entitysetter   •Entity !Builder
    Builder #$  #yappliculture
78. •%2/ '-:3 •48+1 object 8+* object 7 object  &!#60
     %2/ 1$  "( .9    5,) #yappliculture
79. Android 8.0 TLS   
    #yappliculture
80. )& usePlaintext() $'(%#  ↓   '"
     Android 8.0! 
    #yappliculture
81. •Android 8.0.5&+"*$ (-ALPN3 •%9ALPN;/0  61
    <7)>  • 4
    )'! ALPN ,#:2  Android 8.0.5 ?<7) =8  #yappliculture
82. 
    
    ALPN      •  !  • No ALPN negotiated $ 
     ALPN   
     ALPN "# $ openssl s_client -alpn h2 -connect <domain>:<port> #yappliculture
83. 
     #yappliculture
84. •/# 0gRPC *5  ". •$!)4'3 +(
    1,26 -1& gRPC+ProtocolBuffers *  %  #yappliculture
85. Fin.