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Support emitting debug logs in rules_rust process wrapper. #2845

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Merged
merged 2 commits into from
Sep 10, 2024
Merged

Support emitting debug logs in rules_rust process wrapper. #2845

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ae17b2e
Support emitting debug logs in rules_rust process wrapper.
UebelAndre Sep 7, 2024
fff8e7e
Update util/process_wrapper/main.rs
UebelAndre Sep 10, 2024
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15 changes: 13 additions & 2 deletions util/process_wrapper/main.rs
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Original file line number Diff line number Diff line change
Expand Up @@ -61,10 +61,19 @@ impl fmt::Display for ProcessWrapperError {

impl std::error::Error for ProcessWrapperError {}

macro_rules! log {
($($arg:tt)*) => {
if std::env::var("RULES_RUST_PROCESS_WRAPPER_DEBUG").is_ok() {
eprintln!($($arg)*);
}
};
}

fn main() -> Result<(), ProcessWrapperError> {
let opts = options().map_err(|e| ProcessWrapperError(e.to_string()))?;

let mut child = Command::new(opts.executable)
let mut command = Command::new(opts.executable);
command
.args(opts.child_arguments)
.env_clear()
.envs(opts.child_environment)
Expand All @@ -79,7 +88,9 @@ fn main() -> Result<(), ProcessWrapperError> {
} else {
Stdio::inherit()
})
.stderr(Stdio::piped())
.stderr(Stdio::piped());
log!("{:#?}", command);
let mut child = command
.spawn()
.map_err(|e| ProcessWrapperError(format!("failed to spawn child process: {}", e)))?;

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