Move postman and web inside src

src/web/metrics.rs

@@ -0,0 +1,27 @@
+use rocket::{
+    fairing::{Fairing, Info, Kind},
+    Request, Response,
+};
+
+use crate::metrics::REQUEST_COUNTER;
+
+pub struct MetricProducer;
+
+#[rocket::async_trait]
+impl Fairing for MetricProducer {
+    fn info(&self) -> Info {
+        Info { name: "Metrics fairing", kind: Kind::Response }
+    }
+
+    async fn on_response<'r>(&self, req: &'r Request<'_>, resp: &mut Response<'r>) {
+        if let Some(route) = req.route() {
+            REQUEST_COUNTER
+                .with_label_values(&[
+                    req.method().as_str(),
+                    &resp.status().code.to_string(),
+                    &route.uri.to_string(),
+                ])
+                .inc();
+        }
+    }
+}