adding jwt middlewares, and improving overall middlewares structure and server

src/middleware/api_key.rs

@@ -0,0 +1,42 @@
+use crate::{
+    middleware::{Middleware, MiddlewareFuture, MiddlewareResult},
+    Responder,
+};
+use http::Request;
+use hyper::body::Incoming;
+use log::warn;
+
+pub struct ApiKeyMiddleware {
+    api_key: String,
+}
+
+impl ApiKeyMiddleware {
+    pub fn new(api_key: &str) -> Self {
+        Self {
+            api_key: api_key.to_string(),
+        }
+    }
+}
+
+impl Middleware for ApiKeyMiddleware {
+    fn run<'a>(&'a self, req: Request<Incoming>) -> MiddlewareFuture<'a> {
+        let expected_key = self.api_key.clone();
+
+        Box::pin(async move {
+            match req.headers().get("X-API-Key") {
+                Some(header) => {
+                    if header == expected_key.as_str() {
+                        MiddlewareResult::Continue(req)
+                    } else {
+                        warn!("X-API-Key wrong");
+                        MiddlewareResult::Respond(Responder::unauthorized().unwrap())
+                    }
+                }
+                None => {
+                    warn!("X-API-Key missing");
+                    MiddlewareResult::Respond(Responder::unauthorized().unwrap())
+                }
+            }
+        })
+    }
+}