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Auto merge of #15465 - Wilfred:command_handle_fixes, r=Veykril

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Fix cargo handle logging in flycheck

This PR has two commits, so it's probably easier to review them separately:

(1) Rename `CargoHandle` to `CommandHandle`, as the command may not be a cargo command.

(2) Logging should format the current command, rather than calling `check_command()` again. This ensures that any later configuration changes don't cause us to log incorrect information.
This commit is contained in:
bors 2023-08-29 07:16:20 +00:00
commit b06503b6ec
1 changed files with 43 additions and 24 deletions
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67
crates/flycheck/src/lib.rs
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@ -5,7 +5,9 @@
#![warn(rust_2018_idioms, unused_lifetimes, semicolon_in_expressions_from_macros)]
use std::{
ffi::OsString,
fmt, io,
path::PathBuf,
process::{ChildStderr, ChildStdout, Command, Stdio},
time::Duration,
};
@ -168,7 +170,7 @@ struct FlycheckActor {
/// doesn't provide a way to read sub-process output without blocking, so we
/// have to wrap sub-processes output handling in a thread and pass messages
/// back over a channel.
cargo_handle: Option<CargoHandle>,
command_handle: Option<CommandHandle>,
}
enum Event {
@ -184,7 +186,7 @@ impl FlycheckActor {
workspace_root: AbsPathBuf,
) -> FlycheckActor {
tracing::info!(%id, ?workspace_root, "Spawning flycheck");
FlycheckActor { id, sender, config, root: workspace_root, cargo_handle: None }
FlycheckActor { id, sender, config, root: workspace_root, command_handle: None }
}
fn report_progress(&self, progress: Progress) {
@ -192,7 +194,7 @@ impl FlycheckActor {
}
fn next_event(&self, inbox: &Receiver<StateChange>) -> Option<Event> {
let check_chan = self.cargo_handle.as_ref().map(|cargo| &cargo.receiver);
let check_chan = self.command_handle.as_ref().map(|cargo| &cargo.receiver);
if let Ok(msg) = inbox.try_recv() {
// give restarts a preference so check outputs don't block a restart or stop
return Some(Event::RequestStateChange(msg));
@ -221,21 +223,19 @@ impl FlycheckActor {
}
let command = self.check_command();
let formatted_command = format!("{:?}", command);
tracing::debug!(?command, "will restart flycheck");
match CargoHandle::spawn(command) {
Ok(cargo_handle) => {
tracing::debug!(
command = ?self.check_command(),
"did restart flycheck"
);
self.cargo_handle = Some(cargo_handle);
match CommandHandle::spawn(command) {
Ok(command_handle) => {
tracing::debug!(command = formatted_command, "did restart flycheck");
self.command_handle = Some(command_handle);
self.report_progress(Progress::DidStart);
}
Err(error) => {
self.report_progress(Progress::DidFailToRestart(format!(
"Failed to run the following command: {:?} error={}",
self.check_command(),
error
"Failed to run the following command: {} error={}",
formatted_command, error
)));
}
}
@ -244,12 +244,14 @@ impl FlycheckActor {
tracing::debug!(flycheck_id = self.id, "flycheck finished");
// Watcher finished
let cargo_handle = self.cargo_handle.take().unwrap();
let res = cargo_handle.join();
let command_handle = self.command_handle.take().unwrap();
let formatted_handle = format!("{:?}", command_handle);
let res = command_handle.join();
if res.is_err() {
tracing::error!(
"Flycheck failed to run the following command: {:?}",
self.check_command()
"Flycheck failed to run the following command: {}",
formatted_handle
);
}
self.report_progress(Progress::DidFinish(res));
@ -284,12 +286,12 @@ impl FlycheckActor {
}
fn cancel_check_process(&mut self) {
if let Some(cargo_handle) = self.cargo_handle.take() {
if let Some(command_handle) = self.command_handle.take() {
tracing::debug!(
command = ?self.check_command(),
command = ?command_handle,
"did cancel flycheck"
);
cargo_handle.cancel();
command_handle.cancel();
self.report_progress(Progress::DidCancel);
}
}
@ -391,19 +393,36 @@ impl Drop for JodGroupChild {
}
/// A handle to a cargo process used for fly-checking.
struct CargoHandle {
struct CommandHandle {
/// The handle to the actual cargo process. As we cannot cancel directly from with
/// a read syscall dropping and therefore terminating the process is our best option.
child: JodGroupChild,
thread: stdx::thread::JoinHandle<io::Result<(bool, String)>>,
receiver: Receiver<CargoMessage>,
program: OsString,
arguments: Vec<OsString>,
current_dir: Option<PathBuf>,
}
impl CargoHandle {
fn spawn(mut command: Command) -> std::io::Result<CargoHandle> {
impl fmt::Debug for CommandHandle {
fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
f.debug_struct("CommandHandle")
.field("program", &self.program)
.field("arguments", &self.arguments)
.field("current_dir", &self.current_dir)
.finish()
}
}
impl CommandHandle {
fn spawn(mut command: Command) -> std::io::Result<CommandHandle> {
command.stdout(Stdio::piped()).stderr(Stdio::piped()).stdin(Stdio::null());
let mut child = command.group_spawn().map(JodGroupChild)?;
let program = command.get_program().into();
let arguments = command.get_args().map(|arg| arg.into()).collect::<Vec<OsString>>();
let current_dir = command.get_current_dir().map(|arg| arg.to_path_buf());
let stdout = child.0.inner().stdout.take().unwrap();
let stderr = child.0.inner().stderr.take().unwrap();
@ -413,7 +432,7 @@ impl CargoHandle {
.name("CargoHandle".to_owned())
.spawn(move || actor.run())
.expect("failed to spawn thread");
Ok(CargoHandle { child, thread, receiver })
Ok(CommandHandle { program, arguments, current_dir, child, thread, receiver })
}
fn cancel(mut self) {