nautalid 0.1.0

Scratch container substrate — TLS 1.3 HTTP/2+3 kernel, LID/AetherDB, optional filter bus (GPL-3.0-or-later).
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//! gRPC health server on a dedicated TLS listener (`NAUTALID_GRPC=1`).

use std::sync::Arc;

use axum::Router;
use rustls::ServerConfig;
use tracing::info;

use super::config::GrpcSurface;

/// Serve gRPC health checks on **`surface.listen`** (HTTP/2 + TLS 1.3).
pub async fn serve(
    surface: &GrpcSurface,
    h2_config: Arc<tokio::sync::RwLock<Arc<ServerConfig>>>,
    acme_challenge: Option<Arc<ServerConfig>>,
    require_client_auth: bool,
) -> std::io::Result<()> {
    let (mut reporter, health_service) = tonic_health::server::health_reporter();
    reporter
        .set_serving::<tonic_health::pb::health_server::HealthServer<tonic_health::server::HealthService>>()
        .await;

    let router = Router::new().fallback_service(health_service);
    info!(listen = %surface.listen, "gRPC surface enabled (health service)");
    crate::http_transport::serve_h2_tls(
        surface.listen,
        h2_config,
        acme_challenge,
        router,
        require_client_auth,
    )
    .await
}