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      • Request Chain ID

      The Request ID middleware is highly flexible. The ID generator (IdGenerator) is used to generate IDs, and you can define your own ID generator as long as it implements the IdGenerator trait. The default generator provided is UlidGenerator.

      Additionally, you can control whether to overwrite an existing requestid. You can also set header_name and other configurations. For details, please refer to the documentation.

      Example Code

      main.rs
      Cargo.toml
      use salvo::prelude::*;

#[handler]
async fn hello(req: &mut Request) -> String {
    format!("Request id: {:?}", req.header::<String>("x-request-id"))
}

#[tokio::main]
async fn main() {
    tracing_subscriber::fmt().init();

    let acceptor = TcpListener::new("0.0.0.0:8698").bind().await;
    let router = Router::new().hoop(RequestId::new()).get(hello);
    Server::new(acceptor).serve(router).await;
}