#Logging Middleware

Logging plays a crucial role in web applications, enabling:

• Detailed information about request processing, helping developers track application behavior
• Assistance with troubleshooting and debugging, especially in production environments
• Monitoring of application performance and resource usage
• Recording of user access patterns and system exceptions
• Meeting security audit and compliance requirements

Salvo provides middleware with basic logging functionality. If the middleware is added directly to a Router, it won't be able to capture 404 errors returned when no Router matches. It's recommended to add it to the Service instead.

Example Code

use salvo::logging::Logger;
use salvo::prelude::*;

#[handler]
async fn hello() -> &'static str {
    "Hello World"
}

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

    let router = Router::new().get(hello);
    let service = Service::new(router).hoop(Logger::new());

    let acceptor = TcpListener::new("0.0.0.0:5800").bind().await;
    Server::new(acceptor).serve(service).await;
}