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pub mod client;
pub mod server;
mod types;
pub use self::{
client::{Client, ResponseHandler},
server::{handle_notification, handle_request, Middleware, RequestHandler},
types::*,
};
use futures::{channel::mpsc, prelude::*};
use log::error;
use std::sync::Arc;
#[derive(Debug)]
pub struct MessageHandler<S, C> {
pub server: Arc<S>,
pub client: Arc<C>,
pub output: mpsc::Sender<String>,
}
impl<S, C> MessageHandler<S, C>
where
S: RequestHandler + Middleware + Send + Sync + 'static,
C: ResponseHandler + Send + Sync + 'static,
{
pub async fn handle(&mut self, json: &str) {
self.server.before_message().await;
match serde_json::from_str(json).map_err(|_| Error::parse_error()) {
Ok(Message::Request(request)) => {
let server = Arc::clone(&self.server);
let mut output = self.output.clone();
tokio::spawn(async move {
let response = server.handle_request(request).await;
if let Some(error) = response.error.as_ref() {
error!("{:?}", error);
}
let json = serde_json::to_string(&response).unwrap();
output.send(json).await.unwrap();
server.after_message().await;
});
}
Ok(Message::Notification(notification)) => {
self.server.handle_notification(notification).await;
self.after_message();
}
Ok(Message::Response(response)) => {
self.client.handle(response).await;
self.after_message();
}
Err(why) => {
let response = Response::error(why, None);
let json = serde_json::to_string(&response).unwrap();
self.output.send(json).await.unwrap();
self.after_message();
}
};
}
fn after_message(&self) {
let server = Arc::clone(&self.server);
tokio::spawn(async move {
server.after_message().await;
});
}
}
|