Graceful shutdown

Cargo.lock

@@ -1814,6 +1814,15 @@ dependencies = [
  "lazy_static",
 ]
 
+[[package]]
+name = "signal-hook-registry"
+version = "1.4.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "a9e9e0b4211b72e7b8b6e85c807d36c212bdb33ea8587f7569562a84df5465b1"
+dependencies = [
+ "libc",
+]
+
 [[package]]
 name = "signature"
 version = "2.2.0"
@@ -2255,6 +2264,7 @@ dependencies = [
  "mio",
  "parking_lot",
  "pin-project-lite",
+ "signal-hook-registry",
  "socket2",
  "tokio-macros",
  "windows-sys 0.52.0",

Cargo.toml

@@ -38,7 +38,7 @@ sqlx = { version = "0.8", features = [
     "uuid",
 ] }
 subtle = "2"
-tokio = { version = "1", features = ["parking_lot", "rt-multi-thread"] }
+tokio = { version = "1", features = ["parking_lot", "rt-multi-thread", "signal"] }
 tokio-util = { version = "0.7" }
 tower = { version = "0.4" }
 tower-http = { version = "0.5", features = [

src/main.rs

@@ -10,7 +10,7 @@ use std::{env, net::Ipv4Addr};
 use auth::HashedBytes;
 use axum::{extract::FromRef, routing::post, Router};
 use file_storage::FileStorage;
-use tokio::net::TcpListener;
+use tokio::{net::TcpListener, signal};
 
 type Pool = sqlx::postgres::PgPool;
 
@@ -66,11 +66,37 @@ async fn main() -> anyhow::Result<()> {
     let addr = (Ipv4Addr::UNSPECIFIED, 3000);
     let listener = TcpListener::bind(addr).await?;
 
-    axum::serve(listener, router).await?;
+    axum::serve(listener, router)
+        .with_graceful_shutdown(shutdown_signal())
+        .await?;
 
     Ok(())
 }
 
+async fn shutdown_signal() {
+    let ctrl_c = async {
+        signal::ctrl_c()
+            .await
+            .expect("failed to install Ctrl+C handler");
+    };
+
+    #[cfg(unix)]
+    let terminate = async {
+        signal::unix::signal(signal::unix::SignalKind::terminate())
+            .expect("failed to install signal handler")
+            .recv()
+            .await;
+    };
+
+    #[cfg(not(unix))]
+    let terminate = std::future::pending::<()>();
+
+    tokio::select! {
+        () = ctrl_c => {},
+        () = terminate => {},
+    }
+}
+
 fn app(state: AppState) -> Router {
     use axum::{http::header, routing::get};
     use endpoints::{