C
C#•5d ago
nikatark

Grpc.Tools generating camelCase classes

Hello, I am integrating a Java gRPC service in my .NET application but gRPC.Tools generates camelCase classes I boiled down the proto file to minumum for the example 
syntax = "proto3";

package services;

option java_package = "services";
option java_multiple_files = true;

//file content

service ExampleService {
  rpc example (exampleRequest) returns (exampleResponse);
}

message exampleRequest {
  int32 user_id = 1;
}

message exampleResponse {
  int32 status_code = 1;
  string message = 2;
}
syntax = "proto3";

package services;

option java_package = "services";
option java_multiple_files = true;

//file content

service ExampleService {
  rpc example (exampleRequest) returns (exampleResponse);
}

message exampleRequest {
  int32 user_id = 1;
}

message exampleResponse {
  int32 status_code = 1;
  string message = 2;
}
after building, the exampleRequest class is generated as it was written in the .proto file, and since the file was generated by a java server, its camelCase instead of PascalCase 
var channel = GrpcChannel.ForAddress("http://example.com");
var client = new ExampleService.ExampleServiceClient(channel);
var request = new exampleRequest { UserId = 1 };
var channel = GrpcChannel.ForAddress("http://example.com");
var client = new ExampleService.ExampleServiceClient(channel);
var request = new exampleRequest { UserId = 1 };
my .csproj file: 
<ItemGroup>
  <Protobuf Include="services\exampleService.proto" GrpcServices="Client" />
</ItemGroup>
<ItemGroup>
  <Protobuf Include="services\exampleService.proto" GrpcServices="Client" />
</ItemGroup>
Is there any way to force PascalCase names in the generated classes?
4 Replies
ero
ero•5d ago
not directly a solution, but you might want to know that you're violating the protobuf style guidelines by using camelCase for message names
ero
ero•5d ago
https://protobuf.dev/programming-guides/style/#message-names
Style Guide
Provides direction for how best to structure your proto definitions.
nikatark
nikatarkOP•5d ago
Thank you, I was not aware of that naming convention. Since I was given the file by another department I will bring it up to them
canton7
canton7•4d ago
I think that probably is the solution: I suspect there's no code to do case transformation for C#, because the casing of messages should already be PascalCase Yeah, I don't see anything in the source to change the case of message names: https://github.com/protocolbuffers/protobuf/blob/fb78c09e1671eed5321bc41816e4656bf966cfa3/src/google/protobuf/compiler/csharp/names.cc#L73 (whereas there is conversion logic for fields: https://github.com/protocolbuffers/protobuf/blob/fb78c09e1671eed5321bc41816e4656bf966cfa3/src/google/protobuf/compiler/csharp/csharp_helpers.cc#L230) Types in Java should also be in PascalCase though, no?

Did you find this page helpful?