use dd_trace_layer::{init, ApiVersion, DDTraceLayer}; use hyper::{server::Server, Body, Error, Request, Response}; use std::net::SocketAddr; use tower::{make::Shared, ServiceBuilder}; #[tokio::main] async fn main() { init( "service_name", "http://localhost:8126", ApiVersion::Version05, ); let service = ServiceBuilder::new() .layer(DDTraceLayer::new("operation_name".to_string())) .service_fn(hello_world); let addr = SocketAddr::from(([127, 0, 0, 1], 8080)); Server::bind(&addr) .serve(Shared::new(service)) .await .expect("server error"); } async fn hello_world(_: Request) -> Result, Error> { Ok(Response::new(Body::from("Hello, World!"))) }