JsonRPC/examples/Rust/Server/src/main.rs
2022-12-17 17:11:28 +01:00

76 lines
2.1 KiB
Rust

use async_trait::async_trait;
use example::base_lib::JRPCResult;
use example::server::{SimpleTestService, SimpleTestServiceHandler};
use example::{JRPCServer, Result, Test2};
use tokio::io::{AsyncBufReadExt, AsyncWriteExt, BufReader};
use tokio::net::TcpStream;
use tokio::sync::mpsc::channel;
#[derive(Clone)]
struct TestServiceImplementation {}
#[async_trait]
impl SimpleTestService for TestServiceImplementation {
async fn GetTest(&self, name: String, age: i64) -> Result<Test2> {
return Ok(Test2 { name, age });
}
async fn TestNot(&self) -> Result<()> {
return Ok(());
}
}
fn handle_connection(stream: TcpStream, server: &JRPCServer) {
let (response_sender, mut response_receiver) = channel::<JRPCResult>(1);
let session = server.get_session(response_sender);
let (r, mut w) = stream.into_split();
tokio::spawn(async move {
loop {
let res = response_receiver.recv().await;
match res {
None => break,
Some(res) => w
.write_all((serde_json::to_string(&res).unwrap() + "\n").as_bytes())
.await
.unwrap(),
}
}
});
tokio::spawn(async move {
let mut reader = BufReader::new(r);
loop {
let mut line = String::new();
let res = reader.read_line(&mut line).await;
match res {
Ok(size) => {
if size > 0 {
session.handle_request(serde_json::from_str(&line).unwrap())
} else {
break;
}
}
Err(_) => break,
}
}
});
}
#[tokio::main]
pub async fn main() {
let mut srv = JRPCServer::new();
srv.add_service(SimpleTestServiceHandler::new(Box::from(
TestServiceImplementation {},
)));
let listener = tokio::net::TcpListener::bind("0.0.0.0:4321").await.unwrap();
loop {
let (stream, address) = listener.accept().await.unwrap();
println!("Got connection from {}", address);
handle_connection(stream, &srv);
}
}