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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,203 @@ | ||
| #[cfg(feature = "metrics")] | ||
| use super::metrics; | ||
| use super::settings::TelemetrySettings; | ||
| use crate::telemetry::log; | ||
| use crate::BootstrapResult; | ||
| use anyhow::Context as _; | ||
| use futures_util::future::FutureExt; | ||
| use futures_util::{pin_mut, ready}; | ||
| use hyper_util::rt::TokioIo; | ||
| use socket2::{Domain, SockAddr, Socket, Type}; | ||
| use std::convert::Infallible; | ||
| use std::future::Future; | ||
| use std::net::SocketAddr; | ||
| use std::pin::Pin; | ||
| use std::sync::Arc; | ||
| use std::task::{Context, Poll}; | ||
| use tokio::net::TcpListener; | ||
| use tokio::sync::watch; | ||
|
|
||
| mod router; | ||
|
|
||
| use router::Router; | ||
| pub use router::{ | ||
| BoxError, TelemetryRouteHandler, TelemetryRouteHandlerFuture, TelemetryServerRoute, | ||
| }; | ||
|
|
||
| pub(super) struct TelemetryServerFuture { | ||
| listener: TcpListener, | ||
| router: Router, | ||
| } | ||
|
|
||
| impl TelemetryServerFuture { | ||
| pub(super) fn new( | ||
| settings: TelemetrySettings, | ||
| custom_routes: Vec<TelemetryServerRoute>, | ||
| ) -> BootstrapResult<Option<TelemetryServerFuture>> { | ||
| if !settings.server.enabled { | ||
| return Ok(None); | ||
| } | ||
|
|
||
| let settings = Arc::new(settings); | ||
|
|
||
| // Eagerly init the memory profiler so it gets set up before syscalls are sandboxed with seccomp. | ||
| #[cfg(all(target_os = "linux", feature = "memory-profiling"))] | ||
| if settings.memory_profiler.enabled { | ||
| memory_profiling::profiler(Arc::clone(&settings)) | ||
| .map_err(|err| anyhow::anyhow!(err))?; | ||
| } | ||
|
|
||
| let addr = settings.server.addr; | ||
|
|
||
| #[cfg(feature = "settings")] | ||
| let addr = SocketAddr::from(addr); | ||
|
|
||
| let router = Router::new(custom_routes, settings); | ||
|
|
||
| let listener = { | ||
| let std_listener = std::net::TcpListener::from( | ||
| bind_socket(addr).with_context(|| format!("binding to socket {addr:?}"))?, | ||
| ); | ||
|
|
||
| std_listener.set_nonblocking(true)?; | ||
|
|
||
| tokio::net::TcpListener::from_std(std_listener)? | ||
| }; | ||
|
|
||
| Ok(Some(TelemetryServerFuture { listener, router })) | ||
| } | ||
| pub(super) fn local_addr(&self) -> SocketAddr { | ||
| self.listener.local_addr().unwrap() | ||
| } | ||
|
|
||
| // Adapted from Hyper 0.14 Server stuff and axum::serve::serve. | ||
| pub(super) async fn with_graceful_shutdown( | ||
| self, | ||
| shutdown_signal: impl Future<Output = ()> + Send + Sync + 'static, | ||
| ) { | ||
| let (signal_tx, signal_rx) = watch::channel(()); | ||
| let signal_tx = Arc::new(signal_tx); | ||
|
|
||
| tokio::spawn(async move { | ||
| shutdown_signal.await; | ||
|
|
||
| drop(signal_rx); | ||
| }); | ||
|
|
||
| let (close_tx, close_rx) = watch::channel(()); | ||
| let listener = self.listener; | ||
|
|
||
| pin_mut!(listener); | ||
|
|
||
| loop { | ||
| let socket = tokio::select! { | ||
| conn = listener.accept() => match conn { | ||
| Ok((conn, _)) => TokioIo::new(conn), | ||
| Err(e) => { | ||
| log::warn!("failed to accept connection"; "error" => e); | ||
|
|
||
| continue; | ||
| } | ||
| }, | ||
| _ = signal_tx.closed() => { break }, | ||
| }; | ||
|
|
||
| let router = self.router.clone(); | ||
| let signal_tx = Arc::clone(&signal_tx); | ||
| let close_rx = close_rx.clone(); | ||
|
|
||
| tokio::spawn(async move { | ||
| let conn = hyper::server::conn::http1::Builder::new() | ||
| .serve_connection(socket, router) | ||
| .with_upgrades(); | ||
|
|
||
| let signal_closed = signal_tx.closed().fuse(); | ||
|
|
||
| pin_mut!(conn); | ||
| pin_mut!(signal_closed); | ||
|
|
||
| loop { | ||
| tokio::select! { | ||
| _ = conn.as_mut() => break, | ||
| _ = &mut signal_closed => conn.as_mut().graceful_shutdown(), | ||
| } | ||
| } | ||
|
|
||
| drop(close_rx); | ||
| }); | ||
| } | ||
|
|
||
| drop(close_rx); | ||
|
|
||
| close_tx.closed().await; | ||
| } | ||
| } | ||
|
|
||
| impl Future for TelemetryServerFuture { | ||
| type Output = Infallible; | ||
|
|
||
| fn poll(mut self: Pin<&mut Self>, cx: &mut Context) -> Poll<Self::Output> { | ||
| let this = &mut *self; | ||
|
|
||
| loop { | ||
| let socket = match ready!(Pin::new(&mut this.listener).poll_accept(cx)) { | ||
| Ok((conn, _)) => TokioIo::new(conn), | ||
| Err(e) => { | ||
| log::warn!("failed to accept connection"; "error" => e); | ||
|
|
||
| continue; | ||
| } | ||
| }; | ||
|
|
||
| let router = this.router.clone(); | ||
|
|
||
| tokio::spawn( | ||
| hyper::server::conn::http1::Builder::new() | ||
| // upgrades needed for websockets | ||
| .serve_connection(socket, router) | ||
| .with_upgrades(), | ||
| ); | ||
| } | ||
| } | ||
| } | ||
|
|
||
| fn bind_socket(addr: SocketAddr) -> BootstrapResult<Socket> { | ||
| let socket = Socket::new( | ||
| if addr.is_ipv4() { | ||
| Domain::IPV4 | ||
| } else { | ||
| Domain::IPV6 | ||
| }, | ||
| Type::STREAM, | ||
| None, | ||
| )?; | ||
|
|
||
| socket.set_reuse_address(true)?; | ||
| #[cfg(unix)] | ||
| socket.set_reuse_port(true)?; | ||
| socket.bind(&SockAddr::from(addr))?; | ||
| socket.listen(1024)?; | ||
|
|
||
| Ok(socket) | ||
| } | ||
|
|
||
| #[cfg(all(target_os = "linux", feature = "memory-profiling"))] | ||
| mod memory_profiling { | ||
| use super::*; | ||
| use crate::telemetry::MemoryProfiler; | ||
| use crate::Result; | ||
|
|
||
| pub(super) fn profiler(settings: Arc<TelemetrySettings>) -> Result<MemoryProfiler> { | ||
| MemoryProfiler::get_or_init_with(&settings.memory_profiler)?.ok_or_else(|| { | ||
| "profiling should be enabled via `_RJEM_MALLOC_CONF=prof:true` env var".into() | ||
| }) | ||
| } | ||
|
|
||
| pub(super) async fn heap_profile(settings: Arc<TelemetrySettings>) -> Result<String> { | ||
| profiler(settings)?.heap_profile().await | ||
| } | ||
|
|
||
| pub(super) async fn heap_stats(settings: Arc<TelemetrySettings>) -> Result<String> { | ||
| profiler(settings)?.heap_stats() | ||
| } | ||
| } |
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