feat(watchers): add Rust-powered watcher backend with runtime fallback and cross-platform test coverage
This commit is contained in:
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rust/Cargo.lock
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493
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checksum = "b9d782e804c2f632e395708e99a94275910eb9100b2114651e04744e9b125006"
|
||||
|
||||
[[package]]
|
||||
name = "windows_i686_gnu"
|
||||
version = "0.52.6"
|
||||
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||
checksum = "8e9b5ad5ab802e97eb8e295ac6720e509ee4c243f69d781394014ebfe8bbfa0b"
|
||||
|
||||
[[package]]
|
||||
name = "windows_i686_gnu"
|
||||
version = "0.53.1"
|
||||
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||
checksum = "960e6da069d81e09becb0ca57a65220ddff016ff2d6af6a223cf372a506593a3"
|
||||
|
||||
[[package]]
|
||||
name = "windows_i686_gnullvm"
|
||||
version = "0.52.6"
|
||||
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||
checksum = "0eee52d38c090b3caa76c563b86c3a4bd71ef1a819287c19d586d7334ae8ed66"
|
||||
|
||||
[[package]]
|
||||
name = "windows_i686_gnullvm"
|
||||
version = "0.53.1"
|
||||
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||
checksum = "fa7359d10048f68ab8b09fa71c3daccfb0e9b559aed648a8f95469c27057180c"
|
||||
|
||||
[[package]]
|
||||
name = "windows_i686_msvc"
|
||||
version = "0.52.6"
|
||||
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||
checksum = "240948bc05c5e7c6dabba28bf89d89ffce3e303022809e73deaefe4f6ec56c66"
|
||||
|
||||
[[package]]
|
||||
name = "windows_i686_msvc"
|
||||
version = "0.53.1"
|
||||
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||
checksum = "1e7ac75179f18232fe9c285163565a57ef8d3c89254a30685b57d83a38d326c2"
|
||||
|
||||
[[package]]
|
||||
name = "windows_x86_64_gnu"
|
||||
version = "0.52.6"
|
||||
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||
checksum = "147a5c80aabfbf0c7d901cb5895d1de30ef2907eb21fbbab29ca94c5b08b1a78"
|
||||
|
||||
[[package]]
|
||||
name = "windows_x86_64_gnu"
|
||||
version = "0.53.1"
|
||||
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||
checksum = "9c3842cdd74a865a8066ab39c8a7a473c0778a3f29370b5fd6b4b9aa7df4a499"
|
||||
|
||||
[[package]]
|
||||
name = "windows_x86_64_gnullvm"
|
||||
version = "0.52.6"
|
||||
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||
checksum = "24d5b23dc417412679681396f2b49f3de8c1473deb516bd34410872eff51ed0d"
|
||||
|
||||
[[package]]
|
||||
name = "windows_x86_64_gnullvm"
|
||||
version = "0.53.1"
|
||||
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||
checksum = "0ffa179e2d07eee8ad8f57493436566c7cc30ac536a3379fdf008f47f6bb7ae1"
|
||||
|
||||
[[package]]
|
||||
name = "windows_x86_64_msvc"
|
||||
version = "0.52.6"
|
||||
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||
checksum = "589f6da84c646204747d1270a2a5661ea66ed1cced2631d546fdfb155959f9ec"
|
||||
|
||||
[[package]]
|
||||
name = "windows_x86_64_msvc"
|
||||
version = "0.53.1"
|
||||
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||
checksum = "d6bbff5f0aada427a1e5a6da5f1f98158182f26556f345ac9e04d36d0ebed650"
|
||||
|
||||
[[package]]
|
||||
name = "zmij"
|
||||
version = "1.0.21"
|
||||
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||
checksum = "b8848ee67ecc8aedbaf3e4122217aff892639231befc6a1b58d29fff4c2cabaa"
|
||||
19
rust/Cargo.toml
Normal file
19
rust/Cargo.toml
Normal file
@@ -0,0 +1,19 @@
|
||||
[package]
|
||||
name = "smartwatch-rust"
|
||||
version = "0.1.0"
|
||||
edition = "2021"
|
||||
|
||||
[[bin]]
|
||||
name = "smartwatch-rust"
|
||||
path = "src/main.rs"
|
||||
|
||||
[dependencies]
|
||||
serde = { version = "1", features = ["derive"] }
|
||||
serde_json = "1"
|
||||
notify = "7"
|
||||
notify-debouncer-full = "0.4"
|
||||
|
||||
[profile.release]
|
||||
opt-level = "z"
|
||||
lto = true
|
||||
strip = true
|
||||
289
rust/src/main.rs
Normal file
289
rust/src/main.rs
Normal file
@@ -0,0 +1,289 @@
|
||||
use notify_debouncer_full::{new_debouncer, DebounceEventResult, DebouncedEvent, RecommendedCache};
|
||||
use notify::{RecommendedWatcher, RecursiveMode, EventKind};
|
||||
use serde::{Deserialize, Serialize};
|
||||
use std::io::{self, BufRead, Write};
|
||||
use std::path::Path;
|
||||
use std::sync::mpsc;
|
||||
use std::time::Duration;
|
||||
|
||||
// --- IPC message types ---
|
||||
|
||||
#[derive(Deserialize)]
|
||||
struct Request {
|
||||
id: String,
|
||||
method: String,
|
||||
#[serde(default)]
|
||||
params: serde_json::Value,
|
||||
}
|
||||
|
||||
#[derive(Serialize)]
|
||||
struct Response {
|
||||
id: String,
|
||||
success: bool,
|
||||
#[serde(skip_serializing_if = "Option::is_none")]
|
||||
result: Option<serde_json::Value>,
|
||||
#[serde(skip_serializing_if = "Option::is_none")]
|
||||
error: Option<String>,
|
||||
}
|
||||
|
||||
#[derive(Serialize)]
|
||||
struct Event {
|
||||
event: String,
|
||||
data: serde_json::Value,
|
||||
}
|
||||
|
||||
// --- Watch command params ---
|
||||
|
||||
#[derive(Deserialize)]
|
||||
#[serde(rename_all = "camelCase")]
|
||||
struct WatchParams {
|
||||
paths: Vec<String>,
|
||||
#[serde(default = "default_depth")]
|
||||
depth: u32,
|
||||
#[serde(default)]
|
||||
follow_symlinks: bool,
|
||||
#[serde(default = "default_debounce")]
|
||||
debounce_ms: u64,
|
||||
}
|
||||
|
||||
fn default_depth() -> u32 { 4 }
|
||||
fn default_debounce() -> u64 { 100 }
|
||||
|
||||
// --- Output helpers (thread-safe via stdout lock) ---
|
||||
|
||||
fn send_line(line: &str) {
|
||||
let stdout = io::stdout();
|
||||
let mut handle = stdout.lock();
|
||||
let _ = handle.write_all(line.as_bytes());
|
||||
let _ = handle.write_all(b"\n");
|
||||
let _ = handle.flush();
|
||||
}
|
||||
|
||||
fn send_response(resp: &Response) {
|
||||
if let Ok(json) = serde_json::to_string(resp) {
|
||||
send_line(&json);
|
||||
}
|
||||
}
|
||||
|
||||
fn send_event(name: &str, data: serde_json::Value) {
|
||||
let evt = Event { event: name.to_string(), data };
|
||||
if let Ok(json) = serde_json::to_string(&evt) {
|
||||
send_line(&json);
|
||||
}
|
||||
}
|
||||
|
||||
fn ok_response(id: String, result: serde_json::Value) -> Response {
|
||||
Response { id, success: true, result: Some(result), error: None }
|
||||
}
|
||||
|
||||
fn err_response(id: String, msg: String) -> Response {
|
||||
Response { id, success: false, result: None, error: Some(msg) }
|
||||
}
|
||||
|
||||
// --- Map notify EventKind to our event type strings ---
|
||||
|
||||
fn event_kind_to_type(kind: &EventKind) -> Option<&'static str> {
|
||||
match kind {
|
||||
EventKind::Create(_) => Some("create"),
|
||||
EventKind::Modify(_) => Some("change"),
|
||||
EventKind::Remove(_) => Some("remove"),
|
||||
_ => None,
|
||||
}
|
||||
}
|
||||
|
||||
/// Determine if a path is a directory
|
||||
fn classify_path(path: &Path) -> &'static str {
|
||||
if path.is_dir() { "dir" } else { "file" }
|
||||
}
|
||||
|
||||
/// Walk a directory and emit add/addDir events for initial scan
|
||||
fn scan_directory(dir: &Path, depth: u32, max_depth: u32) {
|
||||
if depth > max_depth {
|
||||
return;
|
||||
}
|
||||
let entries = match std::fs::read_dir(dir) {
|
||||
Ok(e) => e,
|
||||
Err(_) => return,
|
||||
};
|
||||
for entry in entries.flatten() {
|
||||
let path = entry.path();
|
||||
let path_str = path.to_string_lossy().to_string();
|
||||
if path.is_dir() {
|
||||
send_event("fsEvent", serde_json::json!({
|
||||
"type": "addDir",
|
||||
"path": path_str,
|
||||
}));
|
||||
scan_directory(&path, depth + 1, max_depth);
|
||||
} else if path.is_file() {
|
||||
send_event("fsEvent", serde_json::json!({
|
||||
"type": "add",
|
||||
"path": path_str,
|
||||
}));
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
// --- Messages between threads ---
|
||||
|
||||
enum MainMessage {
|
||||
StdinLine(String),
|
||||
StdinClosed,
|
||||
FsEvents(Vec<DebouncedEvent>),
|
||||
FsError(Vec<notify::Error>),
|
||||
}
|
||||
|
||||
// --- Main ---
|
||||
|
||||
fn main() {
|
||||
let args: Vec<String> = std::env::args().collect();
|
||||
if !args.contains(&"--management".to_string()) {
|
||||
eprintln!("smartwatch-rust: use --management flag for IPC mode");
|
||||
std::process::exit(1);
|
||||
}
|
||||
|
||||
// Signal ready
|
||||
send_event("ready", serde_json::json!({}));
|
||||
|
||||
// Single channel for all messages to the main thread
|
||||
let (main_tx, main_rx) = mpsc::channel::<MainMessage>();
|
||||
|
||||
// Spawn stdin reader thread
|
||||
let stdin_tx = main_tx.clone();
|
||||
std::thread::spawn(move || {
|
||||
let stdin = io::stdin();
|
||||
for line in stdin.lock().lines() {
|
||||
match line {
|
||||
Ok(l) => {
|
||||
let trimmed = l.trim().to_string();
|
||||
if !trimmed.is_empty() {
|
||||
if stdin_tx.send(MainMessage::StdinLine(trimmed)).is_err() {
|
||||
break;
|
||||
}
|
||||
}
|
||||
}
|
||||
Err(_) => break,
|
||||
}
|
||||
}
|
||||
let _ = stdin_tx.send(MainMessage::StdinClosed);
|
||||
});
|
||||
|
||||
// State: active debouncer
|
||||
let mut active_debouncer: Option<notify_debouncer_full::Debouncer<
|
||||
RecommendedWatcher,
|
||||
RecommendedCache,
|
||||
>> = None;
|
||||
|
||||
// Main event loop — receives both stdin lines and FS events
|
||||
for msg in &main_rx {
|
||||
match msg {
|
||||
MainMessage::StdinClosed => break,
|
||||
|
||||
MainMessage::FsEvents(events) => {
|
||||
for event in events {
|
||||
let Some(event_type) = event_kind_to_type(&event.kind) else {
|
||||
continue;
|
||||
};
|
||||
for path in &event.paths {
|
||||
let path_str = path.to_string_lossy().to_string();
|
||||
let path_kind = classify_path(path);
|
||||
let fs_type = match (event_type, path_kind) {
|
||||
("create", "dir") => "addDir",
|
||||
("create", _) => "add",
|
||||
("change", _) => "change",
|
||||
("remove", "dir") => "unlinkDir",
|
||||
("remove", _) => "unlink",
|
||||
_ => continue,
|
||||
};
|
||||
send_event("fsEvent", serde_json::json!({
|
||||
"type": fs_type,
|
||||
"path": path_str,
|
||||
}));
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
MainMessage::FsError(errors) => {
|
||||
for err in errors {
|
||||
send_event("error", serde_json::json!({
|
||||
"message": format!("{}", err),
|
||||
}));
|
||||
}
|
||||
}
|
||||
|
||||
MainMessage::StdinLine(line) => {
|
||||
let request: Request = match serde_json::from_str(&line) {
|
||||
Ok(r) => r,
|
||||
Err(e) => {
|
||||
send_response(&err_response(
|
||||
"unknown".to_string(),
|
||||
format!("Failed to parse request: {}", e),
|
||||
));
|
||||
continue;
|
||||
}
|
||||
};
|
||||
|
||||
match request.method.as_str() {
|
||||
"watch" => {
|
||||
let params: WatchParams = match serde_json::from_value(request.params) {
|
||||
Ok(p) => p,
|
||||
Err(e) => {
|
||||
send_response(&err_response(request.id, format!("Invalid params: {}", e)));
|
||||
continue;
|
||||
}
|
||||
};
|
||||
|
||||
// Stop any existing watcher
|
||||
active_debouncer.take();
|
||||
|
||||
let debounce_duration = Duration::from_millis(params.debounce_ms);
|
||||
let fs_tx = main_tx.clone();
|
||||
|
||||
let debouncer = new_debouncer(
|
||||
debounce_duration,
|
||||
None,
|
||||
move |result: DebounceEventResult| {
|
||||
match result {
|
||||
Ok(events) => { let _ = fs_tx.send(MainMessage::FsEvents(events)); }
|
||||
Err(errors) => { let _ = fs_tx.send(MainMessage::FsError(errors)); }
|
||||
}
|
||||
},
|
||||
);
|
||||
|
||||
match debouncer {
|
||||
Ok(mut debouncer) => {
|
||||
for path_str in ¶ms.paths {
|
||||
let path = Path::new(path_str);
|
||||
if let Err(e) = debouncer.watch(path, RecursiveMode::Recursive) {
|
||||
eprintln!("Watch error for {}: {}", path_str, e);
|
||||
}
|
||||
}
|
||||
|
||||
// Initial scan
|
||||
for path_str in ¶ms.paths {
|
||||
scan_directory(Path::new(path_str), 0, params.depth);
|
||||
}
|
||||
|
||||
send_event("watchReady", serde_json::json!({}));
|
||||
active_debouncer = Some(debouncer);
|
||||
send_response(&ok_response(request.id, serde_json::json!({ "watching": true })));
|
||||
}
|
||||
Err(e) => {
|
||||
send_response(&err_response(request.id, format!("Failed to create watcher: {}", e)));
|
||||
}
|
||||
}
|
||||
}
|
||||
"stop" => {
|
||||
active_debouncer.take();
|
||||
send_response(&ok_response(request.id, serde_json::json!({ "stopped": true })));
|
||||
}
|
||||
other => {
|
||||
send_response(&err_response(request.id, format!("Unknown method: {}", other)));
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
// Clean up
|
||||
active_debouncer.take();
|
||||
}
|
||||
Reference in New Issue
Block a user