slotgate 0.1.0

A bounded-parallelism job runner that gives each slot its own disjoint port range, so port-binding tests run in parallel without collisions.
Documentation 
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34

// Copyright (c) 2025-2026 Umberto Gotti
// SPDX-License-Identifier: MIT

use crate::compiler_artifact_parser::CompilerArtifactParser;
use tokio::process::Command;

pub struct PreBuildRunner;

impl PreBuildRunner {
    pub async fn run(
        program: &str,
        args: &[String],
        target_name: Option<&str>,
    ) -> Result<Option<String>, String> {
        let output = Command::new(program)
            .args(args)
            .output()
            .await
            .map_err(|error| format!("failed to spawn pre-build command: {error}"))?;

        if !output.status.success() {
            return Err(format!(
                "pre-build command exited with failure: {:?}",
                output.status
            ));
        }

        let stdout = String::from_utf8_lossy(&output.stdout);
        Ok(CompilerArtifactParser::find_executable(
            &stdout,
            target_name,
        ))
    }
}