refactor(quickstart): Rust use wasmcloud-component SDK

Signed-off-by: Brooks Townsend <[email protected]>

docs/tour/add-features.mdx

@@ -62,47 +62,35 @@ func main() {}
 
 Let's extend this application to do more than just say "Hello!"
 
-Using the `path_with_query` method on the incoming request, we can check the request for a name provided in a query string, and then return a greeting with that name. If there isn't one or the path isn't in the format we expect, we'll default to saying "Hello, World!"
+Using methods on the incoming [`http::Request`](https://docs.rs/http/1.1.0/http/request/struct.Request.html), we can check the request for a name provided in a query string, and then return a greeting with that name. If there isn't one or the path isn't in the format we expect, we'll default to saying "Hello, World!"
 
 ```rust
-wit_bindgen::generate!({
-  generate_all
-});
-
-use exports::wasi::http::incoming_handler::Guest;
-use wasi::http::types::*;
-
-struct HttpServer;
-
-impl Guest for HttpServer {
-  fn handle(_request: IncomingRequest, response_out: ResponseOutparam) { // [!code --]
-  fn handle(request: IncomingRequest, response_out: ResponseOutparam) { // [!code ++]
-      let response = OutgoingResponse::new(Fields::new());
-      response.set_status_code(200).unwrap();
-      let response_body = response.body().unwrap();
-      let name = match request // [!code ++:11]
-          .path_with_query()
-          .unwrap()
-          .split("=")
-          .collect::<Vec<&str>>()[..]
-      {
-          // query string is "/?name=<name>" e.g. localhost:8000?name=Bob
-          ["/?name", name] => name.to_string(),
-          // query string is anything else or empty e.g. localhost:8000
-          _ => "World".to_string(),
-      };
-      response_body
-          .write()
-          .unwrap()
-          .blocking_write_and_flush(b"Hello from Rust!\n") // [!code --]
-          .blocking_write_and_flush(format!("Hello, {}!\n", name).as_bytes()) // [!code ++]
-          .unwrap();
-      OutgoingBody::finish(response_body, None).expect("failed to finish response body");
-      ResponseOutparam::set(response_out, Ok(response));
-  }
+use wasmcloud_component::http;
+
+struct Component;
+
+http::export!(Component);
+
+impl http::Server for Component {
+    fn handle(
+        _request: http::IncomingRequest, // [!code --]
+        request: http::IncomingRequest, // [!code ++]
+    ) -> http::Result<http::Response<impl http::OutgoingBody>> {
+        let (parts, _body) = request.into_parts(); // [!code ++:11]
+        let query = parts
+            .uri
+            .query()
+            .map(ToString::to_string)
+            .unwrap_or_default();
+        let name = match query.split("=").collect::<Vec<&str>>()[..] {
+            ["name", name] => name,
+            _ => "World",
+        };
+        Ok(http::Response::new(format!("Hello, {name}!\n")))
+        Ok(http::Response::new("Hello from Wasm!\n")) // [!code --]
+    }
 }
 
-export!(HttpServer);
 ```
 
   </TabItem>
@@ -264,34 +252,42 @@ func main() {}
 Now let's use the atomic increment function to keep track of how many times we've greeted each person.
 
 ```rust
-    let name = match request
-        .path_with_query()
-        .unwrap()
-        .split("=")
-        .collect::<Vec<&str>>()[..]
-    {
-        // query string is "/?name=<name>" e.g. localhost:8000?name=Bob
-        ["/?name", name] => name.to_string(),
-        // query string is anything else or empty e.g. localhost:8000
-        _ => "World".to_string(),
-    };
-
-    wasi::logging::logging::log( // [!code ++:16]
-        wasi::logging::logging::Level::Info,
-        "",
-        &format!("Greeting {name}"),
-    );
-
-    let bucket =
-        wasi::keyvalue::store::open("default").expect("failed to open empty bucket");
-    let count = wasi::keyvalue::atomics::increment(&bucket, &name, 1)
-        .expect("failed to increment count");
-
-    response_body
-        .write()
-        .unwrap()
-        .blocking_write_and_flush(format!("Hello x{count}, {name}!\n").as_bytes())
-        .unwrap();
+use wasmcloud_component::http; // [!code --]
+use wasmcloud_component::http::ErrorCode; // [!code ++:3]
+use wasmcloud_component::wasi::keyvalue::*;
+use wasmcloud_component::{http, info};
+
+struct Component;
+
+http::export!(Component);
+
+impl http::Server for Component {
+    fn handle(
+        request: http::IncomingRequest,
+    ) -> http::Result<http::Response<impl http::OutgoingBody>> {
+        let (parts, _body) = request.into_parts();
+        let query = parts
+            .uri
+            .query()
+            .map(ToString::to_string)
+            .unwrap_or_default();
+        let name = match query.split("=").collect::<Vec<&str>>()[..] {
+            ["name", name] => name,
+            _ => "World",
+        };
+
+        info!("Greeting {name}"); // [!code ++:10]
+
+        let bucket = store::open("default").map_err(|e| {
+            ErrorCode::InternalError(Some(format!("failed to open KV bucket: {e:?}")))
+        })?;
+        let count = atomics::increment(&bucket, &name, 1).map_err(|e| {
+            ErrorCode::InternalError(Some(format!("failed to increment counter: {e:?}")))
+        })?;
+
+        Ok(http::Response::new(format!("Hello x{count}, {name}!\n")))
+    }
+}
 ```
 
   </TabItem>

docs/tour/hello-world.mdx

@@ -319,12 +319,20 @@ The Rust code for our component is found in `hello/src/lib.rs`.
 Open the file in your code editor and change the "Hello" message on line 19. You might modify the message to say hello from WebAssembly, your own name, or whatever else you like.
 
 ```rust
-response_body
-            .write()
-            .unwrap()
-            .blocking_write_and_flush(b"Hello from Rust!\n") // [!code --]
-            .blocking_write_and_flush(b"Hello from Wasm!\n") // [!code ++]
-            .unwrap();
+use wasmcloud_component::http;
+
+struct Component;
+
+http::export!(Component);
+
+impl http::Server for Component {
+    fn handle(
+        _request: http::IncomingRequest,
+    ) -> http::Result<http::Response<impl http::OutgoingBody>> {
+        Ok(http::Response::new("Hello from Rust!\n")) // [!code --]
+        Ok(http::Response::new("Hello from Wasm!\n")) // [!code ++]
+    }
+}
 ```
 
   </TabItem>