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|
use config::ReverseProxyConfig;
use handler::handle_request;
use hyper::{
server::conn::AddrStream,
service::{make_service_fn, service_fn},
Body, Client, Request, Server,
};
use leash::{AnyhowResultFuture, Component};
use opentelemetry::global;
use opentelemetry_http::HeaderExtractor;
use shared::config::Settings;
use std::{convert::Infallible, sync::Arc};
use tokio::sync::oneshot;
use tracing_opentelemetry::OpenTelemetrySpanExt;
mod config;
mod handler;
mod ratelimit_client;
pub struct ReverseProxyServer {}
impl Component for ReverseProxyServer {
type Config = ReverseProxyConfig;
const SERVICE_NAME: &'static str = "rest";
fn start(
&self,
settings: Settings<Self::Config>,
stop: oneshot::Receiver<()>,
) -> AnyhowResultFuture<()> {
Box::pin(async move {
// Client to the remote ratelimiters
let ratelimiter = Arc::new(ratelimit_client::RemoteRatelimiter::new(
settings.config.clone(),
));
let https = hyper_rustls::HttpsConnectorBuilder::new()
.with_native_roots()
.https_or_http()
.enable_http1()
.build();
let client: Client<_, hyper::Body> = Client::builder().build(https);
let token = settings.config.discord.token.clone();
let service_fn = make_service_fn(move |_: &AddrStream| {
let client = client.clone();
let ratelimiter = ratelimiter.clone();
let token = token.clone();
async move {
Ok::<_, Infallible>(service_fn(move |request: Request<Body>| {
let token = token.clone();
let parent_cx = global::get_text_map_propagator(|propagator| {
propagator.extract(&HeaderExtractor(request.headers()))
});
let span = tracing::span!(tracing::Level::INFO, "request process");
span.set_parent(parent_cx);
let client = client.clone();
let ratelimiter = ratelimiter.clone();
async move {
let token = token.clone();
let ratelimiter = ratelimiter.clone();
handle_request(client, ratelimiter, token, request).await
}
}))
}
});
let server = Server::bind(&settings.config.server.listening_adress)
.http1_only(true)
.serve(service_fn);
server
.with_graceful_shutdown(async {
stop.await.expect("should not fail");
})
.await?;
Ok(())
})
}
fn new() -> Self {
Self {}
}
}
|
