chore(api-public): return build metadata (#3278)

Author: NathanFlurry

Cargo.lock

@@ -82,7 +82,8 @@ tracing = "0.1.40"
 tracing-core = "0.1"
 tracing-opentelemetry = "0.29"
 tracing-slog = "0.2"
-vergen = "9.0.4"
+vergen = { version = "9.0.4", features = ["build", "cargo", "rustc"] }
+vergen-gitcl = "1.0.0"
 reqwest-eventsource = "0.6.0"
 
 [workspace.dependencies.sentry]

Cargo.toml

@@ -33,4 +33,7 @@ tracing.workspace = true
 utoipa.workspace = true
 
 [build-dependencies]
+anyhow.workspace = true
 fs_extra.workspace = true
+vergen.workspace = true
+vergen-gitcl.workspace = true

engine/packages/api-public/Cargo.toml

@@ -1,9 +1,18 @@
+use anyhow::Result;
 use fs_extra::dir;
 use std::env;
 use std::fs;
 use std::path::Path;
 
-fn main() {
+fn main() -> Result<()> {
+	// Configure vergen to emit build metadata
+	vergen::Emitter::default()
+		.add_instructions(&vergen::BuildBuilder::all_build()?)?
+		.add_instructions(&vergen::CargoBuilder::all_cargo()?)?
+		.add_instructions(&vergen::RustcBuilder::all_rustc()?)?
+		.add_instructions(&vergen_gitcl::GitclBuilder::all_git()?)?
+		.emit()?;
+
 	let manifest_dir = env::var("CARGO_MANIFEST_DIR").unwrap();
 	let out_dir = env::var("OUT_DIR").unwrap();
 	let ui_dir = Path::new(&out_dir).join("ui");
@@ -39,4 +48,6 @@ fn main() {
 
 		fs::write(index_html_path, index_html_content).expect("Failed to write index.html");
 	}
+
+	Ok(())
 }

engine/packages/api-public/build.rs

@@ -12,6 +12,12 @@ pub async fn get_metadata(Extension(ctx): Extension<ApiCtx>) -> impl IntoRespons
 
 	Json(json!({
 		"runtime": "engine",
-		"version": env!("CARGO_PKG_VERSION")
+		"version": env!("CARGO_PKG_VERSION"),
+		"git_sha": env!("VERGEN_GIT_SHA"),
+		"build_timestamp": env!("VERGEN_BUILD_TIMESTAMP"),
+		"rustc_version": env!("VERGEN_RUSTC_SEMVER"),
+		"rustc_host": env!("VERGEN_RUSTC_HOST_TRIPLE"),
+		"cargo_target": env!("VERGEN_CARGO_TARGET_TRIPLE"),
+		"cargo_profile": if env!("VERGEN_CARGO_DEBUG") == "true" { "debug" } else { "release" }
 	}))
 }