http-axum.rs

use axum::{Router, routing::get, Json};
use serde::Serialize;
use std::{sync::Arc, time::SystemTime};

#[derive(Serialize)]
struct Health {
    status: &'static str,
    uptime_seconds: u64,
}

async fn health_check(start_time: Arc<SystemTime>) -> Json<Health> {
    let uptime = SystemTime::now()
        .duration_since(*start_time)
        .unwrap_or_default()
        .as_secs();

    Json(Health {
        status: "ok",
        uptime_seconds: uptime,
    })
}

#[tokio::main]
async fn main() {
    let start_time = Arc::new(SystemTime::now());

    let app = Router::new().route(
        "/health",
        get({
            let start_time = start_time.clone();
            move || health_check(start_time.clone())
        }),
    );

    axum::Server::bind(&"0.0.0.0:3000".parse().unwrap())
        .serve(app.into_make_service())
        .await
        .unwrap();
}