Protoc无法创建服务。

huangapple go评论78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。

syntax = "proto3";
package greet;
option go_package="./greet/greetpb";
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:

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

使用以下命令生成代码:

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

下面是上述命令生成的 Golang 代码:

// Code generated by protoc-gen-go. DO NOT EDIT.
// versions:
// 	protoc-gen-go v1.26.0
// 	protoc        v3.17.3
// source: greet/greetpb/greet.proto

package greetpb

import (
	protoreflect "google.golang.org/protobuf/reflect/protoreflect"
	protoimpl "google.golang.org/protobuf/runtime/protoimpl"
	reflect "reflect"
)

const (
	// Verify that this generated code is sufficiently up-to-date.
	_ = protoimpl.EnforceVersion(20 - protoimpl.MinVersion)
	// Verify that runtime/protoimpl is sufficiently up-to-date.
	_ = protoimpl.EnforceVersion(protoimpl.MaxVersion - 20)
)

var File_greet_greetpb_greet_proto protoreflect.FileDescriptor

var file_greet_greetpb_greet_proto_rawDesc = []byte{
	0x0a, 0x19, 0x67, 0x72, 0x65, 0x65, 0x74, 0x2f, 0x67, 0x72, 0x65, 0x65, 0x74, 0x70, 0x62, 0x2f,
	0x67, 0x72, 0x65, 0x65, 0x74, 0x2e, 0x70, 0x72, 0x6f, 0x74, 0x6f, 0x12, 0x05, 0x67, 0x72, 0x65,
	0x65, 0x74, 0x32, 0x0e, 0x0a, 0x0c, 0x47, 0x72, 0x65, 0x65, 0x74, 0x53, 0x65, 0x72, 0x76, 0x69,
	0x63, 0x65, 0x42, 0x11, 0x5a, 0x0f, 0x2e, 0x2f, 0x67, 0x72, 0x65, 0x65, 0x74, 0x2f, 0x67, 0x72,
	0x65, 0x65, 0x74, 0x70, 0x62, 0x62, 0x06, 0x70, 0x72, 0x6f, 0x74, 0x6f, 0x33,
}

var file_greet_greetpb_greet_proto_goTypes = []interface{}{}
var file_greet_greetpb_greet_proto_depIdxs = []int32{
	0, // [0:0] is the sub-list for method output_type
	0, // [0:0] is the sub-list for method input_type
	0, // [0:0] is the sub-list for extension type_name
	0, // [0:0] is the sub-list for extension extendee
	0, // [0:0] is the sub-list for field type_name
}

func init() { file_greet_greetpb_greet_proto_init() }
func file_greet_greetpb_greet_proto_init() {
	if File_greet_greetpb_greet_proto != nil {
		return
	}
	type x struct{}
	out := protoimpl.TypeBuilder{
		File: protoimpl.DescBuilder{
			GoPackagePath: reflect.TypeOf(x{}).PkgPath(),
			RawDescriptor: file_greet_greetpb_greet_proto_rawDesc,
			NumEnums:      0,
			NumMessages:   0,
			NumExtensions: 0,
			NumServices:   1,
		},
		GoTypes:           file_greet_greetpb_greet_proto_goTypes,
		DependencyIndexes: file_greet_greetpb_greet_proto_depIdxs,
	}.Build()
	File_greet_greetpb_greet_proto = out.File
	file_greet_greetpb_greet_proto_rawDesc = nil
	file_greet_greetpb_greet_proto_goTypes = nil
	file_greet_greetpb_greet_proto_depIdxs = nil
}

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.

syntax = "proto3";
package greet;
option go_package="./greet/greetpb";
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:

PS D:\Study\grpc\go-grpc-course> protoc --version
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:

// Code generated by protoc-gen-go. DO NOT EDIT.
// versions:
// 	protoc-gen-go v1.26.0
// 	protoc        v3.17.3
// source: greet/greetpb/greet.proto
package greetpb
import (
protoreflect "google.golang.org/protobuf/reflect/protoreflect"
protoimpl "google.golang.org/protobuf/runtime/protoimpl"
reflect "reflect"
)
const (
// Verify that this generated code is sufficiently up-to-date.
_ = protoimpl.EnforceVersion(20 - protoimpl.MinVersion)
// Verify that runtime/protoimpl is sufficiently up-to-date.
_ = protoimpl.EnforceVersion(protoimpl.MaxVersion - 20)
)
var File_greet_greetpb_greet_proto protoreflect.FileDescriptor
var file_greet_greetpb_greet_proto_rawDesc = []byte{
0x0a, 0x19, 0x67, 0x72, 0x65, 0x65, 0x74, 0x2f, 0x67, 0x72, 0x65, 0x65, 0x74, 0x70, 0x62, 0x2f,
0x67, 0x72, 0x65, 0x65, 0x74, 0x2e, 0x70, 0x72, 0x6f, 0x74, 0x6f, 0x12, 0x05, 0x67, 0x72, 0x65,
0x65, 0x74, 0x32, 0x0e, 0x0a, 0x0c, 0x47, 0x72, 0x65, 0x65, 0x74, 0x53, 0x65, 0x72, 0x76, 0x69,
0x63, 0x65, 0x42, 0x11, 0x5a, 0x0f, 0x2e, 0x2f, 0x67, 0x72, 0x65, 0x65, 0x74, 0x2f, 0x67, 0x72,
0x65, 0x65, 0x74, 0x70, 0x62, 0x62, 0x06, 0x70, 0x72, 0x6f, 0x74, 0x6f, 0x33,
}
var file_greet_greetpb_greet_proto_goTypes = []interface{}{}
var file_greet_greetpb_greet_proto_depIdxs = []int32{
0, // [0:0] is the sub-list for method output_type
0, // [0:0] is the sub-list for method input_type
0, // [0:0] is the sub-list for extension type_name
0, // [0:0] is the sub-list for extension extendee
0, // [0:0] is the sub-list for field type_name
}
func init() { file_greet_greetpb_greet_proto_init() }
func file_greet_greetpb_greet_proto_init() {
if File_greet_greetpb_greet_proto != nil {
return
}
type x struct{}
out := protoimpl.TypeBuilder{
File: protoimpl.DescBuilder{
GoPackagePath: reflect.TypeOf(x{}).PkgPath(),
RawDescriptor: file_greet_greetpb_greet_proto_rawDesc,
NumEnums:      0,
NumMessages:   0,
NumExtensions: 0,
NumServices:   1,
},
GoTypes:           file_greet_greetpb_greet_proto_goTypes,
DependencyIndexes: file_greet_greetpb_greet_proto_depIdxs,
}.Build()
File_greet_greetpb_greet_proto = out.File
file_greet_greetpb_greet_proto_rawDesc = nil
file_greet_greetpb_greet_proto_goTypes = nil
file_greet_greetpb_greet_proto_depIdxs = nil
}

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:

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:

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
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