Move postman and web inside src

src/metrics.rs

@@ -0,0 +1,36 @@
+use axum::{routing::get, Router};
+use lazy_static::lazy_static;
+use log::warn;
+use prometheus::{IntCounterVec, Opts, Registry};
+
+lazy_static! {
+    pub static ref REGISTRY: Registry = Registry::new();
+    pub static ref REQUEST_COUNTER: IntCounterVec =
+        IntCounterVec::new(Opts::new("requests", "Requests"), &["method", "status", "route"])
+            .unwrap();
+}
+
+pub fn init_metrics() {
+    REGISTRY.register(Box::new(REQUEST_COUNTER.clone())).unwrap();
+}
+
+pub async fn serve() {
+    let app = Router::new().route("/metrics", get(metrics));
+
+    let listener = tokio::net::TcpListener::bind("localhost:31756").await.unwrap();
+    axum::serve(listener, app).await.unwrap();
+}
+
+async fn metrics() -> String {
+    let encoder = prometheus::TextEncoder::new();
+    let res_custom = encoder.encode_to_string(&REGISTRY.gather());
+
+    match res_custom {
+        Ok(s) => s,
+        Err(e) => {
+            warn!("Error encoding metrics: {:?}", e);
+
+            String::new()
+        }
+    }
+}