Server crash logs and boot availability

src/main.rs

@@ -9,8 +9,7 @@ use clap::Parser;
 use native_windows_gui::{self as nwg, NativeUi};
 mod stremio_app;
 use crate::stremio_app::{
-    constants::{DEV_ENDPOINT, IPC_PATH, STA_ENDPOINT, WEB_ENDPOINT},
-    stremio_server::StremioServer,
+    constants::{DEV_ENDPOINT, IPC_PATH, STA_ENDPOINT, STREMIO_SERVER_DEV_MODE, WEB_ENDPOINT},
     MainWindow, PipeClient,
 };
 
@@ -75,9 +74,10 @@ fn main() {
     }
     // END IPC
 
-    if !opt.development {
-        StremioServer::new();
-    }
+    std::env::set_var(
+        STREMIO_SERVER_DEV_MODE,
+        if opt.development { "true" } else { "false" },
+    );
 
     let webui_url = if opt.development && opt.webui_url == WEB_ENDPOINT {
         DEV_ENDPOINT.to_string()

src/stremio_app/app.rs

@@ -27,6 +27,8 @@ use crate::stremio_app::{
     PipeServer,
 };
 
+use super::stremio_server::StremioServer;
+
 #[derive(Default, NwgUi)]
 pub struct MainWindow {
     pub command: String,
@@ -50,11 +52,13 @@ pub struct MainWindow {
     #[nwg_events((tray, MousePressLeftUp): [Self::on_show], (tray_exit, OnMenuItemSelected): [nwg::stop_thread_dispatch()], (tray_show_hide, OnMenuItemSelected): [Self::on_show_hide], (tray_topmost, OnMenuItemSelected): [Self::on_toggle_topmost]) ]
     pub tray: SystemTray,
     #[nwg_partial(parent: window)]
-    pub webview: WebView,
+    pub splash_screen: SplashImage,
+    #[nwg_partial(parent: window)]
+    pub server: StremioServer,
     #[nwg_partial(parent: window)]
     pub player: Player,
     #[nwg_partial(parent: window)]
-    pub splash_screen: SplashImage,
+    pub webview: WebView,
     #[nwg_control]
     #[nwg_events(OnNotice: [Self::on_toggle_fullscreen_notice] )]
     pub toggle_fullscreen_notice: nwg::Notice,

src/stremio_app/constants.rs

@@ -1,13 +1,16 @@
-pub const APP_NAME: &str = "Stremio";
-pub const IPC_PATH: &str = "//./pipe/com.stremio5.";
-pub const DEV_ENDPOINT: &str = "http://127.0.0.1:11470";
-pub const WEB_ENDPOINT: &str = "https://web.stremio.com/";
-pub const STA_ENDPOINT: &str = "https://staging.strem.io/";
-pub const WINDOW_MIN_WIDTH: i32 = 1000;
-pub const WINDOW_MIN_HEIGHT: i32 = 600;
-pub const UPDATE_INTERVAL: u64 = 12 * 60 * 60;
-pub const UPDATE_ENDPOINT: [&str; 3] = [
-    "https://www.strem.io/updater/check?product=stremio-shell-ng",
-    "https://www.stremio.com/updater/check?product=stremio-shell-ng",
-    "https://www.stremio.net/updater/check?product=stremio-shell-ng",
-];
+pub const APP_NAME: &str = "Stremio";
+pub const IPC_PATH: &str = "//./pipe/com.stremio5.";
+pub const DEV_ENDPOINT: &str = "http://127.0.0.1:11470";
+pub const WEB_ENDPOINT: &str = "https://web.stremio.com/";
+pub const STA_ENDPOINT: &str = "https://staging.strem.io/";
+pub const WINDOW_MIN_WIDTH: i32 = 1000;
+pub const WINDOW_MIN_HEIGHT: i32 = 600;
+pub const UPDATE_INTERVAL: u64 = 12 * 60 * 60;
+pub const UPDATE_ENDPOINT: [&str; 3] = [
+    "https://www.strem.io/updater/check?product=stremio-shell-ng",
+    "https://www.stremio.com/updater/check?product=stremio-shell-ng",
+    "https://www.stremio.net/updater/check?product=stremio-shell-ng",
+];
+pub const STREMIO_SERVER_DEV_MODE: &str = "STREMIO_SERVER_DEV_MODE";
+pub const SRV_BUFFER_SIZE: usize = 1024;
+pub const SRV_LOG_SIZE: usize = 20;

src/stremio_app/stremio_server/server.rs

@@ -1,6 +1,15 @@
-use native_windows_gui as nwg;
+use crate::stremio_app::constants::{SRV_BUFFER_SIZE, SRV_LOG_SIZE, STREMIO_SERVER_DEV_MODE};
+use native_windows_gui::{self as nwg, PartialUi};
+use std::io::Write;
 use std::{
-    env, fs, os::windows::process::CommandExt, path, process::Command, thread, time::Duration,
+    env, fs,
+    io::Read,
+    ops::Deref,
+    os::windows::process::CommandExt,
+    path,
+    process::{Command, Stdio},
+    sync::{Arc, Mutex},
+    thread,
 };
 use winapi::um::{
     processthreadsapi::GetCurrentProcess,
@@ -12,10 +21,23 @@ use winapi::um::{
     },
 };
 
-pub struct StremioServer {}
+#[derive(Default)]
+pub struct StremioServer {
+    development: bool,
+    parent: nwg::ControlHandle,
+    crash_notice: nwg::Notice,
+    logs: Arc<Mutex<String>>,
+}
 
 impl StremioServer {
-    pub fn new() -> StremioServer {
+    pub fn start(&self) {
+        if self.development {
+            return;
+        }
+        let (tx, rx) = flume::unbounded();
+        let logs = self.logs.clone();
+        let sender = self.crash_notice.sender();
+
         thread::spawn(move || {
             // Use Win32JobObject to kill the child process when the parent process is killed
             // With the JOB_OBJECT_LIMIT_SILENT_BREAKAWAY_OK and JOB_OBJECT_LIMIT_KILL_ON_JOB_CLOSE flags
@@ -45,31 +67,150 @@ impl StremioServer {
                 .and_then(fs::canonicalize)
                 .expect("Cannot get the current executable path");
             path.pop();
-            loop {
-                let runtime_path = path.clone().join(path::Path::new("stremio-runtime"));
-                let server_path = path.clone().join(path::Path::new("server.js"));
-                let child = Command::new(runtime_path)
-                    .arg(server_path)
-                    .creation_flags(CREATE_NO_WINDOW)
-                    .spawn();
-                match child {
-                    Ok(mut child) => {
-                        // TODO: store somehow last few lines of the child's stdout/stderr instead of just waiting
-                        child.wait().expect("Cannot wait for the server");
-                    }
-                    Err(err) => {
-                        nwg::error_message(
-                            "Stremio server",
-                            format!("Cannot execute stremio-runtime: {}", &err).as_str(),
-                        );
-                        break;
-                    }
-                };
-                // TODO: show error message with the child's stdout/stderr
-                thread::sleep(Duration::from_millis(500));
-                dbg!("Trying to restart the server...");
+            let lines = Arc::new(Mutex::new(String::new()));
+            let runtime_path = path.clone().join(path::Path::new("stremio-runtime"));
+            let server_path = path.clone().join(path::Path::new("server.js"));
+            let child = Command::new(runtime_path)
+                .arg(server_path)
+                .creation_flags(CREATE_NO_WINDOW)
+                .stdout(Stdio::piped())
+                .stderr(Stdio::piped())
+                .spawn();
+            match child {
+                Ok(mut child) => {
+                    let mut stdout = child.stdout.take().unwrap();
+                    let out_lines = lines.clone();
+                    let tx = tx.clone();
+                    let out_thread = thread::spawn(move || {
+                        let http_endpoint = String::new();
+                        loop {
+                            let mut buffer = [0; SRV_BUFFER_SIZE];
+                            let on = stdout.read(&mut buffer[..]).unwrap_or(!0);
+                            if on > buffer.len() {
+                                continue;
+                            }
+                            std::io::stdout().write(&buffer).ok();
+                            let string_data = String::from_utf8_lossy(&buffer[..on]);
+                            {
+                                let lines = &mut *out_lines.lock().unwrap();
+                                *lines += string_data.deref();
+                                if http_endpoint.is_empty() {
+                                    if let Some(http_endpoint) = string_data
+                                        .lines()
+                                        .find(|line| line.starts_with("EngineFS server started at"))
+                                    {
+                                        let http_endpoint =
+                                            http_endpoint.split_whitespace().last().unwrap();
+                                        println!("HTTP endpoint: {}", http_endpoint);
+                                        let endpoint = http_endpoint.to_string();
+                                        tx.send(endpoint.clone()).ok();
+                                    }
+                                }
+                                *lines = lines
+                                    .lines()
+                                    .rev()
+                                    .take(SRV_LOG_SIZE)
+                                    .collect::<Vec<&str>>()
+                                    .into_iter()
+                                    .rev()
+                                    .collect::<Vec<&str>>()
+                                    .join("\n");
+                            };
+                            if on == 0 {
+                                // Server terminated
+                                break;
+                            }
+                        }
+                    });
+
+                    let mut stderr = child.stderr.take().unwrap();
+                    let err_lines = lines.clone();
+                    let err_thread = thread::spawn(move || {
+                        let mut buffer = [0; SRV_BUFFER_SIZE];
+                        loop {
+                            let en = stderr.read(&mut buffer[..]).unwrap_or(!0);
+                            if en > buffer.len() {
+                                continue;
+                            }
+                            std::io::stderr().write(&buffer).ok();
+                            let string_data = String::from_utf8_lossy(&buffer[..en]);
+                            // eprint!("{:?}", &buffer);
+                            {
+                                let lines = &mut *err_lines.lock().unwrap();
+                                *lines += string_data.deref();
+                                *lines = lines
+                                    .lines()
+                                    .rev()
+                                    .take(SRV_LOG_SIZE)
+                                    .collect::<Vec<&str>>()
+                                    .into_iter()
+                                    .rev()
+                                    .collect::<Vec<&str>>()
+                                    .join("\n");
+                            };
+                            if en == 0 {
+                                // Server terminated
+                                break;
+                            }
+                        }
+                    });
+                    out_thread.join().ok();
+                    err_thread.join().ok();
+                }
+                Err(err) => {
+                    nwg::error_message(
+                        "Stremio server",
+                        format!("Cannot execute stremio-runtime: {}", &err).as_str(),
+                    );
+                }
+            };
+
+            {
+                let mut logs = logs.lock().unwrap();
+                *logs = lines.lock().unwrap().deref().to_string();
             }
+            println!("Server terminated.");
+            sender.notice();
         });
-        StremioServer {}
+
+        // Wait for the server to start
+        rx.recv().unwrap();
+    }
+}
+
+impl PartialUi for StremioServer {
+    fn build_partial<W: Into<nwg::ControlHandle>>(
+        data: &mut Self,
+        parent: Option<W>,
+    ) -> Result<(), nwg::NwgError> {
+        if std::env::var(STREMIO_SERVER_DEV_MODE).unwrap_or("false".to_string()) == "true" {
+            data.development = true;
+        }
+
+        data.parent = parent.unwrap().into().clone();
+
+        nwg::Notice::builder()
+            .parent(data.parent)
+            .build(&mut data.crash_notice)
+            .ok();
+        data.start();
+        println!("Stremio server started");
+        Ok(())
+    }
+    fn process_event<'a>(
+        &self,
+        evt: nwg::Event,
+        _evt_data: &nwg::EventData,
+        handle: nwg::ControlHandle,
+    ) {
+        use nwg::Event as E;
+        if evt == E::OnNotice && handle == self.crash_notice.handle {
+            nwg::modal_error_message(
+                self.parent,
+                "Stremio server crash log",
+                self.logs.lock().unwrap().deref(),
+            );
+            self.start();
+        }
     }
 }