do things that don't work

README.md

@@ -1 +1,3 @@
 # service-manager
+
+unix only for now, rip windows

config.toml

@@ -11,3 +11,12 @@ env = { HELLO = "uwu hi ヾ(•ω•`)o" }
 [pwd]
 command = "pwd"
 workdir = "./src"
+
+[crash]
+command = "cat fkasdjfölashjdflksd"
+
+[side-effect-create]
+command = "touch uwu.txt"
+
+[side-effect-remove]
+command = "rm uwu.txt"

src/controller.rs

@@ -4,9 +4,13 @@ use crate::{view, App};
 use crossterm::event;
 use crossterm::event::{Event, KeyCode};
 use std::collections::HashMap;
-use std::ffi::OsStr;
+use std::ffi::{OsStr, OsString};
 use std::io;
-use std::process::{Command, Stdio};
+use std::io::{ErrorKind, Read};
+use std::os::unix::ffi::OsStrExt;
+use std::process::{Child, Command, Stdio};
+use std::sync::mpsc::TryRecvError;
+use std::sync::{mpsc, Mutex};
 use tui::backend::Backend;
 use tui::widgets::TableState;
 use tui::Terminal;
@@ -15,11 +19,13 @@ pub fn run_app<B: Backend>(terminal: &mut Terminal<B>, mut app: App) -> io::Resu
     loop {
         terminal.draw(|f| view::render_ui(f, &mut app))?;
 
+        app.recv_stdouts();
+
         if let Event::Key(key) = event::read()? {
             match key.code {
                 KeyCode::Char('q') => match app.selected {
                     Some(_) => app.leave_service(),
-                    None => return Ok(()),
+                    None => break,
                 },
                 KeyCode::Char('r') => app.run_service(),
                 KeyCode::Down => app.next(),
@@ -30,35 +36,71 @@ pub fn run_app<B: Backend>(terminal: &mut Terminal<B>, mut app: App) -> io::Resu
             }
         }
     }
+
+    // terminate the child processes
+    for sender in app.thread_terminates {
+        let _ = sender.send(());
+    }
+
+    Ok(())
 }
 
 impl App {
-    pub fn new(config: Config) -> App {
-        App {
+    pub fn new(config: Config) -> io::Result<App> {
+        Ok(App {
             table: AppState {
                 table_state: TableState::default(),
-                items: config
+                services: config
                     .into_iter()
-                    .map(|(name, service)| Service {
-                        command: service.command,
-                        name,
-                        workdir: service
-                            .workdir
-                            .unwrap_or_else(|| std::env::current_dir().unwrap()),
-                        env: service.env.unwrap_or_else(HashMap::new),
-                        status: ServiceStatus::NotStarted,
-                        child: None,
+                    .map(|(name, service)| -> io::Result<Service> {
+                        let (stdout_send, stdout_recv) = mpsc::channel();
+
+                        Ok(Service {
+                            command: service.command,
+                            name,
+                            workdir: service
+                                .workdir
+                                .ok_or_else(|| io::Error::from(ErrorKind::Other))
+                                .or_else(|_| std::env::current_dir())?,
+                            env: service.env.unwrap_or_else(HashMap::new),
+                            status: Mutex::new(ServiceStatus::NotStarted),
+                            stdout_buf: OsString::new(),
+                            stdout_recv,
+                            stdout_send: Mutex::new(Some(stdout_send)),
+                        })
                     })
-                    .collect(),
+                    .collect::<io::Result<_>>()?,
             },
             selected: None,
-        }
+            thread_terminates: Vec::new(),
+        })
     }
 
     pub fn is_table(&self) -> bool {
         self.selected.is_none()
     }
 
+    fn recv_stdouts(&mut self) {
+        for service in self.table.services.iter_mut() {
+            while let Ok(vec) = service.stdout_recv.try_recv() {
+                service.stdout_buf.push(OsStr::from_bytes(&vec));
+
+                std::fs::write(
+                    format!(
+                        "debug/received_something_{}_{}.txt",
+                        service.name,
+                        std::time::SystemTime::now()
+                            .duration_since(std::time::UNIX_EPOCH)
+                            .unwrap()
+                            .as_millis()
+                    ),
+                    service.stdout_buf.as_bytes(),
+                )
+                .expect("debug failed fuck");
+            }
+        }
+    }
+
     fn select_service(&mut self) {
         if self.is_table() {
             if let Some(selected) = self.table.table_state.selected() {
@@ -74,7 +116,7 @@ impl App {
     fn next(&mut self) {
         let i = match self.table.table_state.selected() {
             Some(i) => {
-                if i >= self.table.items.len() - 1 {
+                if i >= self.table.services.len() - 1 {
                     0
                 } else {
                     i + 1
@@ -89,7 +131,7 @@ impl App {
         let i = match self.table.table_state.selected() {
             Some(i) => {
                 if i == 0 {
-                    self.table.items.len() - 1
+                    self.table.services.len() - 1
                 } else {
                     i - 1
                 }
@@ -108,8 +150,16 @@ impl App {
     }
 
     fn start_service(&mut self, service: usize) {
-        let service = &mut self.table.items[service];
-        service.status = ServiceStatus::Running;
+        let service = &mut self.table.services[service];
+
+        *service.status.lock().expect("service.status lock poisoned") = ServiceStatus::Running;
+
+        let stdout_send = service
+            .stdout_send
+            .lock()
+            .expect("stdout_send lock poisoned")
+            .take()
+            .expect("stdout_send has been stolen");
 
         let mut cmd = Command::new("sh");
 
@@ -117,8 +167,73 @@ impl App {
         cmd.envs(service.env.iter());
 
         cmd.stdout(Stdio::piped());
-        let child = cmd.spawn();
+        cmd.stderr(Stdio::piped());
+        cmd.stdin(Stdio::piped());
 
-        service.child = Some(child);
+        let child = match cmd.spawn() {
+            Err(err) => {
+                stdout_send
+                    .send(err.to_string().into_bytes())
+                    .expect("failed to send stdout");
+                return;
+            }
+            Ok(child) => child,
+        };
+
+        let (tx, rx) = mpsc::channel();
+
+        self.thread_terminates.push(tx);
+
+        std::thread::spawn(move || match child_process_thread(child, stdout_send, rx) {
+            Ok(_) => {}
+            Err(e) => std::fs::write("error.txt", e.to_string()).unwrap(),
+        });
     }
 }
+fn child_process_thread(
+    child: Child,
+    stdout_send: mpsc::Sender<Vec<u8>>,
+    terminate_channel: mpsc::Receiver<()>,
+) -> io::Result<()> {
+    let mut child = child;
+    let mut stdout = child.stdout.take().unwrap();
+
+    loop {
+        match terminate_channel.try_recv() {
+            Ok(_) | Err(TryRecvError::Disconnected) => break,
+            Err(TryRecvError::Empty) => {}
+        }
+
+        let mut stdout_buf = Vec::new();
+        match stdout.read(&mut stdout_buf) {
+            Ok(0) => continue,
+            Ok(_) => {
+                std::fs::write(
+                    format!(
+                        "debug/read_something_{}.txt",
+                        std::time::SystemTime::now()
+                            .duration_since(std::time::UNIX_EPOCH)
+                            .unwrap()
+                            .as_millis()
+                    ),
+                    &stdout_buf,
+                )
+                .ok();
+            }
+            Err(e) if e.kind() == io::ErrorKind::Interrupted => {}
+            Err(e) => return Err(e),
+        };
+
+        stdout_send
+            .send(stdout_buf)
+            .map_err(|_| io::Error::from(io::ErrorKind::Other))?;
+    }
+
+    match child.kill() {
+        Ok(()) => {}
+        Err(e) if e.kind() == io::ErrorKind::InvalidInput => {}
+        Err(e) => return Err(e),
+    }
+
+    Ok(())
+}

src/main.rs

@@ -8,17 +8,18 @@ use crossterm::terminal::{
     disable_raw_mode, enable_raw_mode, EnterAlternateScreen, LeaveAlternateScreen,
 };
 use std::io::StdoutLock;
-use std::{env, error::Error, fs, io};
+use std::{env, fs, io};
 use tui::backend::CrosstermBackend;
 use tui::Terminal;
 
 use crate::model::config::Config;
 use crate::model::App;
 
-fn main() -> Result<(), Box<dyn Error>> {
+fn main() {
     let file_path = env::args()
         .nth(1)
         .or_else(|| env::var("SERVICE_MANAGER_CONFIG_PATH").ok())
+        .or_else(|| Some("config.toml".to_string()))
         .unwrap_or_else(|| {
             eprintln!(
                 "error: config file not found
@@ -41,26 +42,36 @@ or use the environment variable SERVICE_MANAGER_CONFIG_PATH"
     let stdout = io::stdout();
     let stdout = stdout.lock();
 
-    let mut terminal = setup_terminal(stdout)?;
+    let mut terminal = setup_terminal(stdout).expect("failed to setup terminal");
 
     // create app and run it
     let app = App::new(config);
-    let res = controller::run_app(&mut terminal, app);
+
+    if let Ok(app) = app {
+        let res = controller::run_app(&mut terminal, app);
+
+        if let Err(err) = res {
+            println!("{:?}", err)
+        }
+    }
 
     // restore terminal
-    disable_raw_mode()?;
-    execute!(
+
+    if let Err(e) = disable_raw_mode() {
+        eprintln!("error: {}", e);
+    }
+
+    if let Err(e) = execute!(
         terminal.backend_mut(),
         LeaveAlternateScreen,
         DisableMouseCapture
-    )?;
-    terminal.show_cursor()?;
-
-    if let Err(err) = res {
-        println!("{:?}", err)
+    ) {
+        eprintln!("error: {}", e);
     }
 
-    Ok(())
+    if let Err(e) = terminal.show_cursor() {
+        eprintln!("error: {}", e);
+    }
 }
 
 fn setup_terminal(mut stdout: StdoutLock) -> io::Result<Terminal<CrosstermBackend<StdoutLock>>> {

src/model.rs

@@ -1,19 +1,20 @@
 use std::collections::HashMap;
-use std::io;
+use std::ffi::OsString;
 use std::path::PathBuf;
-use std::process::Child;
+use std::sync::{mpsc, Mutex};
 use tui::widgets::TableState;
 
 #[derive(Debug)]
 pub struct App {
     pub table: AppState,
     pub selected: Option<usize>,
+    pub thread_terminates: Vec<mpsc::Sender<()>>,
 }
 
 #[derive(Debug)]
 pub struct AppState {
     pub table_state: TableState,
-    pub items: Vec<Service>,
+    pub services: Vec<Service>,
 }
 
 #[derive(Debug)]
@@ -22,11 +23,14 @@ pub struct Service {
     pub name: String,
     pub workdir: PathBuf,
     pub env: HashMap<String, String>,
-    pub status: ServiceStatus,
-    pub child: Option<io::Result<Child>>,
+    pub status: Mutex<ServiceStatus>,
+    pub stdout_buf: OsString,
+    pub stdout_recv: mpsc::Receiver<Vec<u8>>,
+    pub stdout_send: Mutex<Option<mpsc::Sender<Vec<u8>>>>,
 }
 
 #[derive(Debug)]
+#[allow(dead_code)]
 pub enum ServiceStatus {
     NotStarted,
     Running,
@@ -37,7 +41,6 @@ pub enum ServiceStatus {
 pub mod config {
     use serde::Deserialize;
     use std::collections::{BTreeMap, HashMap};
-    use std::ffi::OsString;
     use std::path::PathBuf;
 
     pub type Config = BTreeMap<String, Service>;

src/view.rs

@@ -25,12 +25,7 @@ pub fn render_ui<B: Backend>(f: &mut Frame<B>, app: &mut App) {
             render_table(f, &mut app.table, chunks[0]);
         }
         Some(index) => {
-            let name = &app.table.items[index].name;
-
-            f.render_widget(
-                Block::default().borders(Borders::ALL).title(name.as_ref()),
-                chunks[0],
-            )
+            render_full_view(f, &mut app.table, index, chunks[0]);
         }
     }
 
@@ -39,6 +34,20 @@ pub fn render_ui<B: Backend>(f: &mut Frame<B>, app: &mut App) {
     }
 }
 
+fn render_full_view<B: Backend>(f: &mut Frame<B>, state: &mut AppState, index: usize, area: Rect) {
+    let service = &state.services[index];
+
+    let block = Block::default()
+        .borders(Borders::ALL)
+        .title("service".as_ref());
+
+    let stdout = service.stdout_buf.to_string_lossy();
+
+    let paragraph = Paragraph::new(stdout.as_ref()).block(block);
+
+    f.render_widget(paragraph, area)
+}
+
 fn render_table<B: Backend>(f: &mut Frame<B>, state: &mut AppState, area: Rect) {
     let selected_style = Style::default().add_modifier(Modifier::REVERSED);
     let normal_style = Style::default().bg(Color::Blue);
@@ -51,11 +60,18 @@ fn render_table<B: Backend>(f: &mut Frame<B>, state: &mut AppState, area: Rect)
         .height(1)
         .bottom_margin(1);
 
-    let rows = state.items.iter().map(|service| {
+    let rows = state.services.iter().map(|service| {
         let height = service.name.chars().filter(|c| *c == '\n').count() + 1;
+
         let cells = [
             Cell::from(service.name.as_ref()),
-            Cell::from(service.status.to_string()),
+            Cell::from(
+                service
+                    .status
+                    .lock()
+                    .expect("service.status lock poisoned")
+                    .to_string(),
+            ),
         ];
         Row::new(cells).height(height as u16).bottom_margin(1)
     });