71 lines
1.8 KiB
Rust
71 lines
1.8 KiB
Rust
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//
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use actix::prelude::*;
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use actix::Recipient;
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use inotify::{EventMask, Inotify, WatchMask};
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use std::{path::PathBuf, time::Duration};
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const CHECK_INTERVAL: Duration = Duration::from_secs(1);
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#[derive(Debug, Clone, Message)]
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#[rtype(result = "()")]
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pub struct WatchFile;
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#[derive(Debug, Message)]
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#[rtype(result = "()")]
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pub struct FileUpdated;
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#[derive(Debug, thiserror::Error)]
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pub enum Error {
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#[error("io")]
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Io(#[from] std::io::Error),
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}
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pub struct FileWatcher {
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inotify: Inotify,
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recipient: Recipient<FileUpdated>,
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run_interval: Option<SpawnHandle>,
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}
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impl FileWatcher {
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pub fn new(path: PathBuf, recipient: Recipient<FileUpdated>) -> Result<Self, Error> {
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let inotify = Inotify::init()?;
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inotify.watches().add(
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path,
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WatchMask::MODIFY | WatchMask::CREATE | WatchMask::DELETE | WatchMask::ATTRIB,
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)?;
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Ok(Self {
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inotify,
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recipient,
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run_interval: None,
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})
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}
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}
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impl Actor for FileWatcher {
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type Context = Context<Self>;
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fn started(&mut self, ctx: &mut Self::Context) {
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tracing::info!("Starting file watcher actor");
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self.run_interval
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.replace(ctx.run_interval(CHECK_INTERVAL, |_act, ctx| {
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ctx.notify(WatchFile);
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}));
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}
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}
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impl Handler<WatchFile> for FileWatcher {
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type Result = ();
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fn handle(&mut self, _msg: WatchFile, _ctx: &mut Self::Context) -> Self::Result {
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let mut buffer = [0u8; 4096];
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if let Ok(mut events) = self.inotify.read_events(&mut buffer) {
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if events.any(|event| {
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event.mask.contains(EventMask::MODIFY) || event.mask.contains(EventMask::ATTRIB)
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}) {
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tracing::info!("File modified");
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self.recipient.do_send(FileUpdated);
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};
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}
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}
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}
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