http_private: use PanicSentinel

Cargo.lock

@@ -163,6 +163,7 @@ dependencies = [
  "rand",
  "rustls 0.20.4",
  "serde",
+ "signal-hook",
  "socket2 0.4.4",
  "sqlx",
  "tokio",

aquatic_http_private/Cargo.toml

@@ -30,6 +30,7 @@ mimalloc = { version = "0.1", default-features = false }
 rand = { version = "0.8", features = ["small_rng"] }
 rustls = "0.20"
 serde = { version = "1", features = ["derive"] }
+signal-hook = { version = "0.3" }
 socket2 = { version = "0.4", features = ["all"] }
 sqlx = { version = "0.5", features = [ "runtime-tokio-rustls" , "mysql" ] }
 tokio = { version = "1", features = ["full"] }

aquatic_http_private/src/lib.rs

@@ -4,9 +4,10 @@ mod workers;
 
 use std::{collections::VecDeque, sync::Arc};
 
-use aquatic_common::rustls_config::create_rustls_config;
+use aquatic_common::{rustls_config::create_rustls_config, PanicSentinelWatcher};
 use common::ChannelRequestSender;
 use dotenv::dotenv;
+use signal_hook::{consts::SIGTERM, iterator::Signals};
 use tokio::sync::mpsc::channel;
 
 use config::Config;
@@ -15,6 +16,8 @@ pub const APP_NAME: &str = "aquatic_http_private: private HTTP/TLS BitTorrent tr
 pub const APP_VERSION: &str = env!("CARGO_PKG_VERSION");
 
 pub fn run(config: Config) -> anyhow::Result<()> {
+    let mut signals = Signals::new([SIGTERM])?;
+
     dotenv().ok();
 
     let tls_config = Arc::new(create_rustls_config(
@@ -32,9 +35,11 @@ pub fn run(config: Config) -> anyhow::Result<()> {
         request_receivers.push_back(request_receiver);
     }
 
+    let (sentinel_watcher, sentinel) = PanicSentinelWatcher::create_with_sentinel();
     let mut handles = Vec::new();
 
     for _ in 0..config.socket_workers {
+        let sentinel = sentinel.clone();
         let config = config.clone();
         let tls_config = tls_config.clone();
         let request_sender = ChannelRequestSender::new(request_senders.clone());
@@ -42,27 +47,37 @@ pub fn run(config: Config) -> anyhow::Result<()> {
         let handle = ::std::thread::Builder::new()
             .name("socket".into())
             .spawn(move || {
-                workers::socket::run_socket_worker(config, tls_config, request_sender)
+                workers::socket::run_socket_worker(sentinel, config, tls_config, request_sender)
             })?;
 
         handles.push(handle);
     }
 
     for _ in 0..config.request_workers {
+        let sentinel = sentinel.clone();
         let config = config.clone();
         let request_receiver = request_receivers.pop_front().unwrap();
 
         let handle = ::std::thread::Builder::new()
             .name("request".into())
-            .spawn(move || workers::request::run_request_worker(config, request_receiver))?;
+            .spawn(move || {
+                workers::request::run_request_worker(sentinel, config, request_receiver)
+            })?;
 
         handles.push(handle);
     }
 
-    for handle in handles {
-        handle
-            .join()
-            .map_err(|err| anyhow::anyhow!("thread join error: {:?}", err))??;
+    for signal in &mut signals {
+        match signal {
+            SIGTERM => {
+                if sentinel_watcher.panic_was_triggered() {
+                    return Err(anyhow::anyhow!("worker thread panicked"));
+                } else {
+                    return Ok(());
+                }
+            }
+            _ => unreachable!(),
+        }
     }
 
     Ok(())

aquatic_http_private/src/workers/request/mod.rs

@@ -11,7 +11,7 @@ use tokio::sync::mpsc::Receiver;
 use tokio::task::LocalSet;
 use tokio::time;
 
-use aquatic_common::{extract_response_peers, CanonicalSocketAddr, ValidUntil};
+use aquatic_common::{extract_response_peers, CanonicalSocketAddr, PanicSentinel, ValidUntil};
 use aquatic_http_protocol::response::{
     AnnounceResponse, Response, ResponsePeer, ResponsePeerListV4, ResponsePeerListV6,
 };
@@ -22,6 +22,7 @@ use crate::config::Config;
 use common::*;
 
 pub fn run_request_worker(
+    _sentinel: PanicSentinel,
     config: Config,
     request_receiver: Receiver<ChannelAnnounceRequest>,
 ) -> anyhow::Result<()> {

aquatic_http_private/src/workers/socket/mod.rs

@@ -8,7 +8,7 @@ use std::{
 };
 
 use anyhow::Context;
-use aquatic_common::rustls_config::RustlsConfig;
+use aquatic_common::{rustls_config::RustlsConfig, PanicSentinel};
 use axum::{extract::connect_info::Connected, routing::get, Extension, Router};
 use hyper::server::conn::AddrIncoming;
 use sqlx::mysql::MySqlPoolOptions;
@@ -23,6 +23,7 @@ impl<'a> Connected<&'a tls::TlsStream> for SocketAddr {
 }
 
 pub fn run_socket_worker(
+    _sentinel: PanicSentinel,
     config: Config,
     tls_config: Arc<RustlsConfig>,
     request_sender: ChannelRequestSender,