thruput-node-supervisor 0.42.0

Local node supervisor for Thruput development
Documentation 
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// Keep in sync with crates/json-rpc/json-rpc-gateway/build.rs.
use std::path::Path;
use std::process::Command;

fn main() {
    let manifest_dir = Path::new(env!("CARGO_MANIFEST_DIR"));
    let repo_root = manifest_dir
        .parent()
        .and_then(Path::parent)
        .unwrap_or(manifest_dir);
    watch_git_head(repo_root);

    let output = Command::new("git")
        .arg("-C")
        .arg(repo_root)
        .arg("rev-parse")
        .arg("HEAD")
        .output();

    let Ok(output) = output else {
        return;
    };
    if !output.status.success() {
        return;
    }

    let commit = String::from_utf8_lossy(&output.stdout);
    let commit = commit.trim();
    if !commit.is_empty() {
        println!("cargo:rustc-env=GIT_COMMIT={commit}");
    }
}

fn watch_git_head(repo_root: &Path) {
    let git_dir = repo_root.join(".git");
    let head_path = git_dir.join("HEAD");
    println!("cargo:rerun-if-changed={}", head_path.display());

    let Ok(head) = std::fs::read_to_string(&head_path) else {
        return;
    };
    let Some(reference) = head.trim().strip_prefix("ref: ") else {
        return;
    };
    println!(
        "cargo:rerun-if-changed={}",
        git_dir.join(reference).display()
    );

    let packed_refs = git_dir.join("packed-refs");
    if packed_refs.exists() {
        println!("cargo:rerun-if-changed={}", packed_refs.display());
    }
}