adding requester to extract json body

src/lib.rs

@@ -1,7 +1,9 @@
 mod builder;
 mod config;
+mod requester;
 mod responder;
 mod server;
 
+pub use requester::Requester;
 pub use responder::Responder;
 pub use server::Server;

src/requester.rs

@@ -0,0 +1,17 @@
+use http::Request;
+use http_body_util::BodyExt;
+use hyper::body::Incoming;
+use serde::de::DeserializeOwned;
+use std::error::Error;
+
+pub struct Requester;
+
+impl Requester {
+    pub async fn extract_body<T>(req: Request<Incoming>) -> Result<T, Box<dyn Error>>
+    where
+        T: DeserializeOwned,
+    {
+        let body = req.collect().await.unwrap().to_bytes();
+        Ok(serde_json::from_slice(&body)?)
+    }
+}