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use std::{sync::Arc, time::Duration};
use log::error;
use serde::{Deserialize, Serialize};
use serde_json::Value;
use karyon_core::async_util::sleep;
use karyon_jsonrpc::{
message::SubscriptionID, rpc_impl, rpc_pubsub_impl, Channel, RPCError, Server,
};
struct Calc {}
#[derive(Deserialize, Serialize)]
struct Req {
x: u32,
y: u32,
}
#[derive(Deserialize, Serialize)]
struct Pong {}
#[rpc_impl]
impl Calc {
async fn ping(&self, _params: Value) -> Result<Value, RPCError> {
Ok(serde_json::json!(Pong {}))
}
}
#[rpc_pubsub_impl]
impl Calc {
async fn log_subscribe(
&self,
chan: Arc<Channel>,
method: String,
_params: Value,
) -> Result<Value, RPCError> {
let sub = chan.new_subscription(&method).await;
let sub_id = sub.id.clone();
smol::spawn(async move {
loop {
sleep(Duration::from_millis(500)).await;
if let Err(err) = sub.notify(serde_json::json!("Hello")).await {
error!("Send notification {err}");
break;
}
}
})
.detach();
Ok(serde_json::json!(sub_id))
}
async fn log_unsubscribe(
&self,
chan: Arc<Channel>,
_method: String,
params: Value,
) -> Result<Value, RPCError> {
let sub_id: SubscriptionID = serde_json::from_value(params)?;
chan.remove_subscription(&sub_id).await;
Ok(serde_json::json!(true))
}
}
fn main() {
env_logger::init();
smol::block_on(async {
let calc = Arc::new(Calc {});
// Creates a new server
let server = Server::builder("tcp://127.0.0.1:6000")
.expect("Create a new server builder")
.service(calc.clone())
.pubsub_service(calc)
.build()
.await
.expect("Build a new server");
// Start the server
server.start();
sleep(Duration::MAX).await;
});
}
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