add observability for windows

cli/src/commands/tunnels.rs

@@ -74,7 +74,7 @@ impl ServiceContainer for TunnelServiceContainer {
 		&mut self,
 		log: log::Logger,
 		launcher_paths: LauncherPaths,
-		shutdown_rx: mpsc::Receiver<ShutdownSignal>,
+		shutdown_rx: mpsc::UnboundedReceiver<ShutdownSignal>,
 	) -> Result<(), AnyError> {
 		let csa = (&self.args).into();
 		serve_with_csa(
@@ -126,7 +126,6 @@ pub async fn service(
 			let current_exe =
 				std::env::current_exe().map_err(|e| wrap(e, "could not get current exe"))?;
 
-			println!("calling register");
 			manager
 				.register(
 					current_exe,
@@ -240,7 +239,7 @@ async fn serve_with_csa(
 	log: Logger,
 	gateway_args: TunnelServeArgs,
 	csa: CodeServerArgs,
-	shutdown_rx: Option<mpsc::Receiver<ShutdownSignal>>,
+	shutdown_rx: Option<mpsc::UnboundedReceiver<ShutdownSignal>>,
 ) -> Result<i32, AnyError> {
 	// Intentionally read before starting the server. If the server updated and
 	// respawn is requested, the old binary will get renamed, and then
@@ -260,7 +259,7 @@ async fn serve_with_csa(
 	let shutdown_tx = if let Some(tx) = shutdown_rx {
 		tx
 	} else {
-		let (tx, rx) = mpsc::channel::<ShutdownSignal>(2);
+		let (tx, rx) = mpsc::unbounded_channel::<ShutdownSignal>();
 		if let Some(process_id) = gateway_args.parent_process_id {
 			match Pid::from_str(&process_id) {
 				Ok(pid) => {
@@ -271,7 +270,7 @@ async fn serve_with_csa(
 						while s.refresh_process(pid) {
 							sleep(Duration::from_millis(2000)).await;
 						}
-						tx.send(ShutdownSignal::ParentProcessKilled).await.ok();
+						tx.send(ShutdownSignal::ParentProcessKilled).ok();
 					});
 				}
 				Err(_) => {
@@ -281,7 +280,7 @@ async fn serve_with_csa(
 		}
 		tokio::spawn(async move {
 			tokio::signal::ctrl_c().await.ok();
-			tx.send(ShutdownSignal::CtrlC).await.ok();
+			tx.send(ShutdownSignal::CtrlC).ok();
 		});
 		rx
 	};

cli/src/tunnels/control_server.rs

@@ -167,7 +167,7 @@ pub async fn serve(
 	launcher_paths: &LauncherPaths,
 	code_server_args: &CodeServerArgs,
 	platform: Platform,
-	shutdown_rx: mpsc::Receiver<ShutdownSignal>,
+	shutdown_rx: mpsc::UnboundedReceiver<ShutdownSignal>,
 ) -> Result<ServerTermination, AnyError> {
 	let mut port = tunnel.add_port_direct(CONTROL_PORT).await?;
 	print_listening(log, &tunnel.name);

cli/src/tunnels/service.rs

@@ -3,7 +3,7 @@
  *  Licensed under the MIT License. See License.txt in the project root for license information.
  *--------------------------------------------------------------------------------------------*/
 
-use std::path::PathBuf;
+use std::path::{Path, PathBuf};
 
 use async_trait::async_trait;
 use tokio::sync::mpsc;
@@ -11,7 +11,8 @@ use tokio::sync::mpsc;
 use crate::commands::tunnels::ShutdownSignal;
 use crate::log;
 use crate::state::LauncherPaths;
-use crate::util::errors::AnyError;
+use crate::util::errors::{wrap, AnyError};
+use crate::util::io::{tailf, TailEvent};
 
 pub const SERVICE_LOG_FILE_NAME: &str = "tunnel-service.log";
 
@@ -21,7 +22,7 @@ pub trait ServiceContainer: Send {
 		&mut self,
 		log: log::Logger,
 		launcher_paths: LauncherPaths,
-		shutdown_rx: mpsc::Receiver<ShutdownSignal>,
+		shutdown_rx: mpsc::UnboundedReceiver<ShutdownSignal>,
 	) -> Result<(), AnyError>;
 }
 
@@ -65,10 +66,29 @@ pub fn create_service_manager(log: log::Logger, paths: &LauncherPaths) -> Servic
 	}
 	#[cfg(target_os = "windows")]
 	{
-		super::service_windows::WindowsService::new(log)
+		super::service_windows::WindowsService::new(log, paths)
 	}
 	#[cfg(target_os = "linux")]
 	{
 		super::service_linux::SystemdService::new(log, paths.clone())
 	}
 }
+
+pub(crate) async fn tail_log_file(log_file: &Path) -> Result<(), AnyError> {
+	if !log_file.exists() {
+		println!("The tunnel service has not started yet.");
+		return Ok(());
+	}
+
+	let file = std::fs::File::open(&log_file).map_err(|e| wrap(e, "error opening log file"))?;
+	let mut rx = tailf(file, 20);
+	while let Some(line) = rx.recv().await {
+		match line {
+			TailEvent::Line(l) => print!("{}", l),
+			TailEvent::Reset => println!("== Tunnel service restarted =="),
+			TailEvent::Err(e) => return Err(wrap(e, "error reading log file").into()),
+		}
+	}
+
+	Ok(())
+}

cli/src/tunnels/service_linux.rs

@@ -107,10 +107,10 @@ impl ServiceManager for SystemdService {
 		launcher_paths: crate::state::LauncherPaths,
 		mut handle: impl 'static + super::ServiceContainer,
 	) -> Result<(), crate::util::errors::AnyError> {
-		let (tx, rx) = mpsc::channel::<ShutdownSignal>(1);
+		let (tx, rx) = mpsc::unbounded_channel::<ShutdownSignal>();
 		tokio::spawn(async move {
 			tokio::signal::ctrl_c().await.ok();
-			tx.send(ShutdownSignal::CtrlC).await.ok();
+			tx.send(ShutdownSignal::CtrlC).ok();
 		});
 
 		handle.run_service(self.log, launcher_paths, rx).await
@@ -128,14 +128,14 @@ impl ServiceManager for SystemdService {
 			])
 			.status()
 			.map(|s| s.code().unwrap_or(1))
-			.map_err(|e| wrap(e, format!("error running journalctl")))?;
+			.map_err(|e| wrap(e, "error running systemctl"))?;
 
 		// then follow log files
 		Command::new("journalctl")
 			.args(["--user", "-f", "-u", &SystemdService::service_name_string()])
 			.status()
 			.map(|s| s.code().unwrap_or(1))
-			.map_err(|e| wrap(e, format!("error running journalctl")))?;
+			.map_err(|e| wrap(e, "error running journalctl"))?;
 		Ok(())
 	}
 

cli/src/tunnels/service_macos.rs

@@ -20,11 +20,10 @@ use crate::{
 	util::{
 		command::capture_command_and_check_status,
 		errors::{wrap, AnyError, MissingHomeDirectory},
-		io::{tailf, TailEvent},
 	},
 };
 
-use super::ServiceManager;
+use super::{ServiceManager, service::tail_log_file};
 
 pub struct LaunchdService {
 	log: log::Logger,
@@ -67,23 +66,7 @@ impl ServiceManager for LaunchdService {
 	}
 
 	async fn show_logs(&self) -> Result<(), AnyError> {
-		if !self.log_file.exists() {
-			println!("The tunnel service has not started yet.");
-			return Ok(());
-		}
-
-		let file =
-			std::fs::File::open(&self.log_file).map_err(|e| wrap(e, "error opening log file"))?;
-		let mut rx = tailf(file, 20);
-		while let Some(line) = rx.recv().await {
-			match line {
-				TailEvent::Line(l) => print!("{}", l),
-				TailEvent::Reset => println!("== Tunnel service restarted =="),
-				TailEvent::Err(e) => return Err(wrap(e, "error reading log file").into()),
-			}
-		}
-
-		Ok(())
+		tail_log_file(&self.log_file).await
 	}
 
 	async fn run(
@@ -91,10 +74,10 @@ impl ServiceManager for LaunchdService {
 		launcher_paths: crate::state::LauncherPaths,
 		mut handle: impl 'static + super::ServiceContainer,
 	) -> Result<(), crate::util::errors::AnyError> {
-		let (tx, rx) = mpsc::channel::<ShutdownSignal>(1);
+		let (tx, rx) = mpsc::unbounded_channel::<ShutdownSignal>();
 		tokio::spawn(async move {
 			tokio::signal::ctrl_c().await.ok();
-			tx.send(ShutdownSignal::CtrlC).await.ok();
+			tx.send(ShutdownSignal::CtrlC).ok();
 		});
 
 		handle.run_service(self.log, launcher_paths, rx).await

cli/src/tunnels/service_windows.rs

@@ -6,7 +6,7 @@
 use async_trait::async_trait;
 use dialoguer::{theme::ColorfulTheme, Input, Password};
 use lazy_static::lazy_static;
-use std::{ffi::OsString, sync::Mutex, thread, time::Duration};
+use std::{ffi::OsString, path::PathBuf, sync::Mutex, thread, time::Duration};
 use tokio::sync::mpsc;
 use windows_service::{
 	define_windows_service,
@@ -21,7 +21,7 @@ use windows_service::{
 
 use crate::{
 	commands::tunnels::ShutdownSignal,
-	util::errors::{wrap, AnyError, WindowsNeedsElevation},
+	util::errors::{wrap, wrapdbg, AnyError, WindowsNeedsElevation},
 };
 use crate::{
 	log::{self, FileLogSink},
@@ -29,19 +29,23 @@ use crate::{
 };
 
 use super::service::{
-	ServiceContainer, ServiceManager as CliServiceManager, SERVICE_LOG_FILE_NAME,
+	tail_log_file, ServiceContainer, ServiceManager as CliServiceManager, SERVICE_LOG_FILE_NAME,
 };
 
 pub struct WindowsService {
 	log: log::Logger,
+	log_file: PathBuf,
 }
 
 const SERVICE_NAME: &str = "code_tunnel";
 const SERVICE_TYPE: ServiceType = ServiceType::OWN_PROCESS;
 
 impl WindowsService {
-	pub fn new(log: log::Logger) -> Self {
-		Self { log }
+	pub fn new(log: log::Logger, paths: &LauncherPaths) -> Self {
+		Self {
+			log,
+			log_file: paths.service_log_file(),
+		}
 	}
 }
 
@@ -54,6 +58,10 @@ impl CliServiceManager for WindowsService {
 		)
 		.map_err(|e| WindowsNeedsElevation(format!("error getting service manager: {}", e)))?;
 
+		let mut args = args.iter().map(OsString::from).collect::<Vec<OsString>>();
+		args.push(OsString::from("--log-to-file"));
+		args.push(self.log_file.as_os_str().to_os_string());
+
 		let mut service_info = ServiceInfo {
 			name: OsString::from(SERVICE_NAME),
 			display_name: OsString::from("VS Code Tunnel"),
@@ -61,7 +69,7 @@ impl CliServiceManager for WindowsService {
 			start_type: ServiceStartType::AutoStart,
 			error_control: ServiceErrorControl::Normal,
 			executable_path: exe,
-			launch_arguments: args.iter().map(OsString::from).collect(),
+			launch_arguments: args,
 			dependencies: vec![],
 			account_name: None,
 			account_password: None,
@@ -74,7 +82,7 @@ impl CliServiceManager for WindowsService {
 		let service = if let Ok(service) = existing_service {
 			service
 				.change_config(&service_info)
-				.map_err(|e| wrap(e, "error updating existing service"))?;
+				.map_err(|e| wrapdbg(e, "error updating existing service"))?;
 			service
 		} else {
 			loop {
@@ -112,7 +120,7 @@ impl CliServiceManager for WindowsService {
 		if status == ServiceState::Stopped {
 			service
 				.start::<&str>(&[])
-				.map_err(|e| wrap(e, "error starting service"))?;
+				.map_err(|e| wrapdbg(e, "error starting service"))?;
 		}
 
 		info!(self.log, "Tunnel service successfully started");
@@ -120,7 +128,7 @@ impl CliServiceManager for WindowsService {
 	}
 
 	async fn show_logs(&self) -> Result<(), AnyError> {
-		todo!();
+		tail_log_file(&self.log_file).await
 	}
 
 	#[allow(unused_must_use)] // triggers incorrectly on `define_windows_service!`
@@ -136,7 +144,7 @@ impl CliServiceManager for WindowsService {
 			Ok(sink) => self.log.tee(sink),
 			Err(e) => {
 				warning!(self.log, "Failed to create service log file: {}", e);
-				self.log.clone()
+				self.log
 			}
 		};
 
@@ -176,12 +184,12 @@ impl CliServiceManager for WindowsService {
 
 		let service_status = service
 			.query_status()
-			.map_err(|e| wrap(e, "error getting service status"))?;
+			.map_err(|e| wrapdbg(e, "error getting service status"))?;
 
 		if service_status.current_state != ServiceState::Stopped {
 			service
 				.stop()
-				.map_err(|e| wrap(e, "error getting stopping service"))?;
+				.map_err(|e| wrapdbg(e, "error getting stopping service"))?;
 
 			while let Ok(ServiceState::Stopped) = service.query_status().map(|s| s.current_state) {
 				info!(self.log, "Polling for service to stop...");
@@ -191,7 +199,7 @@ impl CliServiceManager for WindowsService {
 
 		service
 			.delete()
-			.map_err(|e| wrap(e, "error deleting service"))?;
+			.map_err(|e| wrapdbg(e, "error deleting service"))?;
 
 		Ok(())
 	}
@@ -212,7 +220,7 @@ fn service_main(_arguments: Vec<OsString>) -> Result<(), AnyError> {
 	let mut service = SERVICE_IMPL.lock().unwrap().take().unwrap();
 
 	// Create a channel to be able to poll a stop event from the service worker loop.
-	let (shutdown_tx, shutdown_rx) = mpsc::channel::<ShutdownSignal>(5);
+	let (shutdown_tx, shutdown_rx) = mpsc::unbounded_channel::<ShutdownSignal>();
 	let mut shutdown_tx = Some(shutdown_tx);
 
 	// Define system service event handler that will be receiving service events.
@@ -222,7 +230,7 @@ fn service_main(_arguments: Vec<OsString>) -> Result<(), AnyError> {
 			ServiceControl::Stop => {
 				shutdown_tx
 					.take()
-					.and_then(|tx| tx.blocking_send(ShutdownSignal::ServiceStopped).ok());
+					.and_then(|tx| tx.send(ShutdownSignal::ServiceStopped).ok());
 				ServiceControlHandlerResult::NoError
 			}
 			_ => ServiceControlHandlerResult::NotImplemented,
@@ -245,6 +253,13 @@ fn service_main(_arguments: Vec<OsString>) -> Result<(), AnyError> {
 		})
 		.map_err(|e| wrap(e, "error marking service as running"))?;
 
+	info!(service.log, "Starting service loop...");
+
+	let panic_log = service.log.clone();
+	std::panic::set_hook(Box::new(move |p| {
+		error!(panic_log, "Service panic: {:?}", p);
+	}));
+
 	let result = tokio::runtime::Builder::new_multi_thread()
 		.enable_all()
 		.build()

cli/src/util/errors.rs

@@ -43,6 +43,17 @@ impl From<reqwest::Error> for WrappedError {
 	}
 }
 
+pub fn wrapdbg<T, S>(original: T, message: S) -> WrappedError
+where
+	T: std::fmt::Debug,
+	S: Into<String>,
+{
+	WrappedError {
+		message: message.into(),
+		original: format!("{:?}", original),
+	}
+}
+
 pub fn wrap<T, S>(original: T, message: S) -> WrappedError
 where
 	T: Display,