continuwuity/src/router/request.rs
Jason Volk 0e74ade7d7 isolate axum shutdown in router; minor run-cycle/signalling tweaks
Signed-off-by: Jason Volk <jason@zemos.net>
2024-06-07 02:00:28 +00:00

102 lines
3.3 KiB
Rust

use std::sync::{atomic::Ordering, Arc};
use axum::{extract::State, response::IntoResponse};
use conduit::{debug_error, debug_warn, defer, Result, RumaResponse, Server};
use http::{Method, StatusCode, Uri};
use ruma::api::client::{
error::{Error as RumaError, ErrorBody, ErrorKind},
uiaa::UiaaResponse,
};
use tracing::{debug, error, trace};
#[tracing::instrument(skip_all)]
pub(crate) async fn spawn(
State(server): State<Arc<Server>>, req: http::Request<axum::body::Body>, next: axum::middleware::Next,
) -> Result<axum::response::Response, StatusCode> {
if server.stopping.load(Ordering::Relaxed) {
debug_warn!("unavailable pending shutdown");
return Err(StatusCode::SERVICE_UNAVAILABLE);
}
let active = server.requests_spawn_active.fetch_add(1, Ordering::Relaxed);
trace!(active, "enter");
defer! {{
let active = server.requests_spawn_active.fetch_sub(1, Ordering::Relaxed);
let finished = server.requests_spawn_finished.fetch_add(1, Ordering::Relaxed);
trace!(active, finished, "leave");
}};
let fut = next.run(req);
let task = server.runtime().spawn(fut);
task.await.map_err(|_| StatusCode::INTERNAL_SERVER_ERROR)
}
#[tracing::instrument(skip_all, name = "handle")]
pub(crate) async fn handle(
State(server): State<Arc<Server>>, req: http::Request<axum::body::Body>, next: axum::middleware::Next,
) -> Result<axum::response::Response, StatusCode> {
if server.stopping.load(Ordering::Relaxed) {
debug_warn!(
method = %req.method(),
uri = %req.uri(),
"unavailable pending shutdown"
);
return Err(StatusCode::SERVICE_UNAVAILABLE);
}
let active = server
.requests_handle_active
.fetch_add(1, Ordering::Relaxed);
trace!(active, "enter");
defer! {{
let active = server.requests_handle_active.fetch_sub(1, Ordering::Relaxed);
let finished = server.requests_handle_finished.fetch_add(1, Ordering::Relaxed);
trace!(active, finished, "leave");
}};
let method = req.method().clone();
let uri = req.uri().clone();
let result = next.run(req).await;
handle_result(&method, &uri, result)
}
fn handle_result(
method: &Method, uri: &Uri, result: axum::response::Response,
) -> Result<axum::response::Response, StatusCode> {
handle_result_log(method, uri, &result);
match result.status() {
StatusCode::METHOD_NOT_ALLOWED => handle_result_403(method, uri, &result),
_ => Ok(result),
}
}
#[allow(clippy::unnecessary_wraps)]
fn handle_result_403(
_method: &Method, _uri: &Uri, result: &axum::response::Response,
) -> Result<axum::response::Response, StatusCode> {
let error = UiaaResponse::MatrixError(RumaError {
status_code: result.status(),
body: ErrorBody::Standard {
kind: ErrorKind::Unrecognized,
message: "M_UNRECOGNIZED: Method not allowed for endpoint".to_owned(),
},
});
Ok(RumaResponse(error).into_response())
}
fn handle_result_log(method: &Method, uri: &Uri, result: &axum::response::Response) {
let status = result.status();
let reason = status.canonical_reason().unwrap_or("Unknown Reason");
let code = status.as_u16();
if status.is_server_error() {
error!(method = ?method, uri = ?uri, "{code} {reason}");
} else if status.is_client_error() {
debug_error!(method = ?method, uri = ?uri, "{code} {reason}");
} else if status.is_redirection() {
debug!(method = ?method, uri = ?uri, "{code} {reason}");
} else {
trace!(method = ?method, uri = ?uri, "{code} {reason}");
}
}