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mod disk;
mod network;
mod nfs;
mod process;
mod system;
mod ui;
use std::io;
use std::time::{Duration, Instant};
use anyhow::Result;
use crossterm::{
event::{self, DisableMouseCapture, EnableMouseCapture, Event, KeyCode, KeyEventKind},
execute,
terminal::{disable_raw_mode, enable_raw_mode, EnterAlternateScreen, LeaveAlternateScreen},
};
use disk::DiskCollector;
use network::NetworkCollector;
use nfs::NfsCollector;
use process::ProcessCollector;
use ratatui::{backend::CrosstermBackend, Terminal};
use system::SystemInfo;
use ui::{draw, draw_help, App, AppMode, FocusPanel};
fn main() -> Result<()> {
enable_raw_mode()?;
let mut stdout = io::stdout();
execute!(stdout, EnterAlternateScreen, EnableMouseCapture)?;
let backend = CrosstermBackend::new(stdout);
let mut terminal = Terminal::new(backend)?;
let res = run_app(&mut terminal);
disable_raw_mode()?;
execute!(
terminal.backend_mut(),
LeaveAlternateScreen,
DisableMouseCapture
)?;
terminal.show_cursor()?;
if let Err(err) = res {
eprintln!("Error: {:?}", err);
}
Ok(())
}
fn run_app<B: ratatui::backend::Backend>(terminal: &mut Terminal<B>) -> Result<()> {
let mut app = App::new();
let mut net_collector = NetworkCollector::new();
let mut disk_collector = DiskCollector::new();
let mut proc_collector = ProcessCollector::new();
let mut nfs_collector = NfsCollector::new();
let mut net_stats = Vec::new();
let mut net_deltas = Vec::new();
let mut disk_usage = Vec::new();
let mut disk_deltas = Vec::new();
let mut nfs_stats = Vec::new();
let mut nfs_deltas = Vec::new();
let mut process_deltas: Vec<process::ProcessDelta> = Vec::new();
let mut system_info = SystemInfo::default();
let mut last_data_update = Instant::now();
let data_update_interval = Duration::from_millis(500);
loop {
let now = Instant::now();
let should_update_data = now.duration_since(last_data_update) >= data_update_interval;
while event::poll(Duration::from_millis(16))? {
if let Event::Key(key) = event::read()? {
if key.kind == KeyEventKind::Press {
match app.mode {
AppMode::Normal => match key.code {
KeyCode::Char('q') => return Ok(()),
KeyCode::Char('h') | KeyCode::Char('?') => {
app.mode = AppMode::Help;
}
KeyCode::Char('u') => {
app.mode = AppMode::FilterUser;
app.input_buffer.clear();
}
KeyCode::Char('p') => {
app.mode = AppMode::FilterPid;
app.input_buffer.clear();
}
KeyCode::Char('c') => {
app.filter_user = None;
app.filter_pid = None;
app.reset_selection();
}
KeyCode::Char('s') => {
app.cycle_sort();
}
KeyCode::Char('t') => {
app.mode = AppMode::UserStats;
}
KeyCode::Tab => {
app.cycle_focus();
}
KeyCode::Enter => {
if app.focus == FocusPanel::Processes && !process_deltas.is_empty()
{
if let Some(process) = process_deltas.get(app.selected_index) {
app.selected_process_pid = Some(process.pid);
app.mode = AppMode::ProcessDetail;
}
}
}
KeyCode::Down | KeyCode::Char('j') => {
let term_height = terminal.size()?.height as usize;
match app.focus {
FocusPanel::Network => {
let visible = (term_height / 4).max(3);
app.scroll_down(visible, net_stats.len());
}
FocusPanel::Nfs => {
let visible = (term_height / 4).max(3);
app.scroll_down(visible, nfs_stats.len());
}
FocusPanel::DiskIo => {
let visible = (term_height / 4).max(3);
app.scroll_down(visible, disk_deltas.len());
}
FocusPanel::DiskUsage => {
let visible = (term_height / 2).max(5);
app.scroll_down(visible, disk_usage.len());
}
FocusPanel::Processes => {
let visible = term_height.saturating_sub(10);
app.next(process_deltas.len().max(1));
app.scroll_down(visible, process_deltas.len());
}
}
}
KeyCode::Up | KeyCode::Char('k') => {
let term_height = terminal.size()?.height as usize;
match app.focus {
FocusPanel::Network => {
let visible = (term_height / 4).max(3);
app.scroll_up(visible, net_stats.len());
}
FocusPanel::Nfs => {
let visible = (term_height / 4).max(3);
app.scroll_up(visible, nfs_stats.len());
}
FocusPanel::DiskIo => {
let visible = (term_height / 4).max(3);
app.scroll_up(visible, disk_deltas.len());
}
FocusPanel::DiskUsage => {
let visible = (term_height / 2).max(5);
app.scroll_up(visible, disk_usage.len());
}
FocusPanel::Processes => {
let visible = term_height.saturating_sub(10);
app.previous(process_deltas.len().max(1));
app.scroll_up(visible, process_deltas.len());
}
}
}
KeyCode::Left => {
if app.focus == FocusPanel::Processes {
app.scroll_horizontal(-3, 20);
}
}
KeyCode::Right | KeyCode::Char('l') => {
if app.focus == FocusPanel::Processes {
app.scroll_horizontal(3, 20);
}
}
KeyCode::Esc => {
app.filter_user = None;
app.filter_pid = None;
app.reset_selection();
}
_ => {}
},
AppMode::FilterUser => match key.code {
KeyCode::Enter => {
if !app.input_buffer.is_empty() {
app.filter_user = Some(app.input_buffer.clone());
app.filter_pid = None;
}
app.mode = AppMode::Normal;
app.input_buffer.clear();
app.reset_selection();
}
KeyCode::Esc => {
app.mode = AppMode::Normal;
app.input_buffer.clear();
}
KeyCode::Backspace => {
app.input_buffer.pop();
}
KeyCode::Char(c) => {
app.input_buffer.push(c);
}
_ => {}
},
AppMode::FilterPid => match key.code {
KeyCode::Enter => {
if let Ok(pid) = app.input_buffer.parse::<u32>() {
app.filter_pid = Some(pid);
app.filter_user = None;
}
app.mode = AppMode::Normal;
app.input_buffer.clear();
app.reset_selection();
}
KeyCode::Esc => {
app.mode = AppMode::Normal;
app.input_buffer.clear();
}
KeyCode::Backspace => {
app.input_buffer.pop();
}
KeyCode::Char(c) if c.is_ascii_digit() => {
app.input_buffer.push(c);
}
_ => {}
},
AppMode::Help => {
app.mode = AppMode::Normal;
}
AppMode::ProcessDetail => {
app.mode = AppMode::Normal;
app.selected_process_pid = None;
}
AppMode::UserStats => {
app.mode = AppMode::Normal;
}
}
}
}
}
if should_update_data {
last_data_update = now;
// 更新系统信息
if let Ok(info) = SystemInfo::collect() {
system_info = info;
}
if let Ok((stats, deltas)) = net_collector.collect() {
net_stats = stats;
net_deltas = deltas;
}
if let Ok((usage, deltas)) = disk_collector.collect() {
disk_usage = usage;
disk_deltas = deltas;
}
if let Ok((stats, deltas)) = nfs_collector.collect() {
nfs_stats = stats;
nfs_deltas = deltas;
}
if let Ok(deltas) = proc_collector.collect_delta() {
process_deltas = if let Some(ref user) = app.filter_user {
deltas.into_iter().filter(|p| &p.user == user).collect()
} else if let Some(pid) = app.filter_pid {
deltas.into_iter().filter(|p| p.pid == pid).collect()
} else {
deltas
};
}
}
terminal.draw(|f| {
draw(
f,
&mut app,
&system_info,
&net_stats,
&net_deltas,
&disk_usage,
&disk_deltas,
&nfs_stats,
&nfs_deltas,
&mut process_deltas,
);
if app.mode == AppMode::Help {
draw_help(f);
}
})?;
}
}