Fixes: #1156 Prevent error when "Result" is used as name of service in proto

[eskawl]

Motivation

Fixes a name conflict when the service itself is named as Result. The conflict occurs with the std::result::Result included in the prelude. Issue described in #1156.

Solution

To prevent the conflict, the generated code will now refer to the Result in a qualified manner viz, std::result::Result.

Test Sample

result.proto

syntax = "proto3";

import "google/protobuf/any.proto";
import "google/protobuf/empty.proto";

option go_package = "github.com/stevenhansel/binus-logbook/scraper/internal/grpc/proto/result";

package result;

service Result {
  rpc Listen(google.protobuf.Empty) returns (Reply) {}
}

message Reply {
  int32 step = 1;
  string name = 2;
}

server.rs

use tonic::{transport::Server, Request, Response, Status};

pub mod pb {
    tonic::include_proto!("result");
}

use pb::{Reply, result_server};


#[derive(Debug, Default)]
pub struct ResultAPI {}

#[tonic::async_trait]
impl result_server::Result for ResultAPI {
    async fn listen(&self, _request: Request<()>) -> Result<Response<Reply>, Status> {
        return Ok(Response::new(Reply { step: 1, name: "23".to_string() }))
    }
}

#[tokio::main]
async fn main() -> Result<(), Box<dyn std::error::Error>> {
    let addr = "[::1]:50051".parse()?;
    let api = ResultAPI::default();

    Server::builder()
        .add_service(result_server::ResultServer::new(api))
        .serve(addr)
        .await?;

    Ok(())
}

client.rs

pub mod pb {
    tonic::include_proto!("result");
}

use pb::{result_client};

#[tokio::main]
async fn main() -> Result<(), Box<dyn std::error::Error>> {
    let mut client = result_client::ResultClient::connect("http://[::1]:50051").await?;

    let request = tonic::Request::new(());

    let response = client.listen(request).await?;

    println!("RESPONSE={:?}", response);

    Ok(())
}

[LucioFranco]

LGTM I think we just need to remove that license file