Protoc无法创建服务。

huangapple
go评论117阅读模式
英文:

Protoc doesn't create service

问题

我只会翻译文本内容，不会执行代码。以下是翻译的结果：

我只是尝试使用协议缓冲区生成 Golang 代码，但无法使用 protoc 命令生成服务。

  1. syntax = "proto3";
  2. package greet;
  3. option go_package="./greet/greetpb";
  4. service GreetService{}

上面是我尝试转换为 Golang 的虚拟 proto 文件。但是在我的系统中，它无法将 service GreetService{} 这一行识别为服务。

我在 Windows 系统上使用以下版本的 protoc：

  1. PS D:\Study\grpc\go-grpc-course> protoc --version
  2. libprotoc 3.17.3

使用以下命令生成代码：

  1. protoc .\greet\greetpb\greet.proto --go_out=.

下面是上述命令生成的 Golang 代码：

  1. // Code generated by protoc-gen-go. DO NOT EDIT.
  2. // versions:
  3. // 	protoc-gen-go v1.26.0
  4. // 	protoc        v3.17.3
  5. // source: greet/greetpb/greet.proto
  7. package greetpb
  9. import (
  10. 	protoreflect "google.golang.org/protobuf/reflect/protoreflect"
  11. 	protoimpl "google.golang.org/protobuf/runtime/protoimpl"
  12. 	reflect "reflect"
  13. )
  15. const (
  16. 	// Verify that this generated code is sufficiently up-to-date.
  17. 	_ = protoimpl.EnforceVersion(20 - protoimpl.MinVersion)
  18. 	// Verify that runtime/protoimpl is sufficiently up-to-date.
  19. 	_ = protoimpl.EnforceVersion(protoimpl.MaxVersion - 20)
  20. )
  22. var File_greet_greetpb_greet_proto protoreflect.FileDescriptor
  24. var file_greet_greetpb_greet_proto_rawDesc = []byte{
  25. 	0x0a, 0x19, 0x67, 0x72, 0x65, 0x65, 0x74, 0x2f, 0x67, 0x72, 0x65, 0x65, 0x74, 0x70, 0x62, 0x2f,
  26. 	0x67, 0x72, 0x65, 0x65, 0x74, 0x2e, 0x70, 0x72, 0x6f, 0x74, 0x6f, 0x12, 0x05, 0x67, 0x72, 0x65,
  27. 	0x65, 0x74, 0x32, 0x0e, 0x0a, 0x0c, 0x47, 0x72, 0x65, 0x65, 0x74, 0x53, 0x65, 0x72, 0x76, 0x69,
  28. 	0x63, 0x65, 0x42, 0x11, 0x5a, 0x0f, 0x2e, 0x2f, 0x67, 0x72, 0x65, 0x65, 0x74, 0x2f, 0x67, 0x72,
  29. 	0x65, 0x65, 0x74, 0x70, 0x62, 0x62, 0x06, 0x70, 0x72, 0x6f, 0x74, 0x6f, 0x33,
  30. }
  32. var file_greet_greetpb_greet_proto_goTypes = []interface{}{}
  33. var file_greet_greetpb_greet_proto_depIdxs = []int32{
  34. 	0, // [0:0] is the sub-list for method output_type
  35. 	0, // [0:0] is the sub-list for method input_type
  36. 	0, // [0:0] is the sub-list for extension type_name
  37. 	0, // [0:0] is the sub-list for extension extendee
  38. 	0, // [0:0] is the sub-list for field type_name
  39. }
  41. func init() { file_greet_greetpb_greet_proto_init() }
  42. func file_greet_greetpb_greet_proto_init() {
  43. 	if File_greet_greetpb_greet_proto != nil {
  44. 		return
  45. 	}
  46. 	type x struct{}
  47. 	out := protoimpl.TypeBuilder{
  48. 		File: protoimpl.DescBuilder{
  49. 			GoPackagePath: reflect.TypeOf(x{}).PkgPath(),
  50. 			RawDescriptor: file_greet_greetpb_greet_proto_rawDesc,
  51. 			NumEnums:      0,
  52. 			NumMessages:   0,
  53. 			NumExtensions: 0,
  54. 			NumServices:   1,
  55. 		},
  56. 		GoTypes:           file_greet_greetpb_greet_proto_goTypes,
  57. 		DependencyIndexes: file_greet_greetpb_greet_proto_depIdxs,
  58. 	}.Build()
  59. 	File_greet_greetpb_greet_proto = out.File
  60. 	file_greet_greetpb_greet_proto_rawDesc = nil
  61. 	file_greet_greetpb_greet_proto_goTypes = nil
  62. 	file_greet_greetpb_greet_proto_depIdxs = nil
  63. }

后面的 Go 代码中没有创建任何服务。我是否做错了什么，还是这是某种 proto 问题？任何帮助将不胜感激。

英文:

I am just trying to generate code for golang using protocol buffer. But unable to generate the service using protoc command.

  1. syntax = "proto3";
  2. package greet;
  3. option go_package="./greet/greetpb";
  4. service GreetService{}

Above is a dummy proto file that I am trying to convert into golang. But unable to generate the correct file as in my system it doesn't recognize service GreetService{}
 line as a service.

I am using the following version of protoc on windows system:

  1. PS D:\Study\grpc\go-grpc-course> protoc --version
  2. libprotoc 3.17.3

Using below command to generate the code:

> protoc .\greet\greetpb\greet.proto --go_out=.

Below is the go code generated by above command:

  1. // Code generated by protoc-gen-go. DO NOT EDIT.
  2. // versions:
  3. // 	protoc-gen-go v1.26.0
  4. // 	protoc        v3.17.3
  5. // source: greet/greetpb/greet.proto
  6. package greetpb
  7. import (
  8. protoreflect "google.golang.org/protobuf/reflect/protoreflect"
  9. protoimpl "google.golang.org/protobuf/runtime/protoimpl"
  10. reflect "reflect"
  11. )
  12. const (
  13. // Verify that this generated code is sufficiently up-to-date.
  14. _ = protoimpl.EnforceVersion(20 - protoimpl.MinVersion)
  15. // Verify that runtime/protoimpl is sufficiently up-to-date.
  16. _ = protoimpl.EnforceVersion(protoimpl.MaxVersion - 20)
  17. )
  18. var File_greet_greetpb_greet_proto protoreflect.FileDescriptor
  19. var file_greet_greetpb_greet_proto_rawDesc = []byte{
  20. 0x0a, 0x19, 0x67, 0x72, 0x65, 0x65, 0x74, 0x2f, 0x67, 0x72, 0x65, 0x65, 0x74, 0x70, 0x62, 0x2f,
  21. 0x67, 0x72, 0x65, 0x65, 0x74, 0x2e, 0x70, 0x72, 0x6f, 0x74, 0x6f, 0x12, 0x05, 0x67, 0x72, 0x65,
  22. 0x65, 0x74, 0x32, 0x0e, 0x0a, 0x0c, 0x47, 0x72, 0x65, 0x65, 0x74, 0x53, 0x65, 0x72, 0x76, 0x69,
  23. 0x63, 0x65, 0x42, 0x11, 0x5a, 0x0f, 0x2e, 0x2f, 0x67, 0x72, 0x65, 0x65, 0x74, 0x2f, 0x67, 0x72,
  24. 0x65, 0x65, 0x74, 0x70, 0x62, 0x62, 0x06, 0x70, 0x72, 0x6f, 0x74, 0x6f, 0x33,
  25. }
  26. var file_greet_greetpb_greet_proto_goTypes = []interface{}{}
  27. var file_greet_greetpb_greet_proto_depIdxs = []int32{
  28. 0, // [0:0] is the sub-list for method output_type
  29. 0, // [0:0] is the sub-list for method input_type
  30. 0, // [0:0] is the sub-list for extension type_name
  31. 0, // [0:0] is the sub-list for extension extendee
  32. 0, // [0:0] is the sub-list for field type_name
  33. }
  34. func init() { file_greet_greetpb_greet_proto_init() }
  35. func file_greet_greetpb_greet_proto_init() {
  36. if File_greet_greetpb_greet_proto != nil {
  37. return
  38. }
  39. type x struct{}
  40. out := protoimpl.TypeBuilder{
  41. File: protoimpl.DescBuilder{
  42. GoPackagePath: reflect.TypeOf(x{}).PkgPath(),
  43. RawDescriptor: file_greet_greetpb_greet_proto_rawDesc,
  44. NumEnums:      0,
  45. NumMessages:   0,
  46. NumExtensions: 0,
  47. NumServices:   1,
  48. },
  49. GoTypes:           file_greet_greetpb_greet_proto_goTypes,
  50. DependencyIndexes: file_greet_greetpb_greet_proto_depIdxs,
  51. }.Build()
  52. File_greet_greetpb_greet_proto = out.File
  53. file_greet_greetpb_greet_proto_rawDesc = nil
  54. file_greet_greetpb_greet_proto_goTypes = nil
  55. file_greet_greetpb_greet_proto_depIdxs = nil
  56. }

There aren't any services created in the later go code. Am I doing something wrong or is this some proto issue. Any help is appreciated.

答案1

得分: 6

你似乎在使用protoc时忘记添加go-grpc_out参数了。这个参数用于生成gRPC代码。请尝试以下命令：

  1. protoc greet.proto --go_out=. --go-grpc_out=.

这也在gRPC快速入门指南的"重新生成gRPC代码"部分中有描述。

英文:

You seem to forgot to add the go-grpc_out argument when using protoc. This argument is for generating the gRPC code. Please try the following:

  1. protoc greet.proto --go_out=. --go-grpc_out=.

This is also described in the gRPC quickstart - section "Regenerate gRPC code"

huangapple
  • 本文由 发表于 2021年6月22日 13:42:09
  • 转载请务必保留本文链接：https://go.coder-hub.com/68078115.html
  • go
  • proto
  • protoc
  • protocol-buffers
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