Struct RequestIdLayer 

pub struct RequestIdLayer { /* private fields */ }

Tower Layer that ensures every request carries an X-Request-Id header.

• If the incoming request already has an X-Request-Id, it is forwarded unchanged.
• Otherwise a monotonically-increasing numeric ID is generated and injected (format: req-<n>).

The same header value is echoed back in the response.

Example

use api_bones_tower::RequestIdLayer;
use tower::ServiceBuilder;

let _svc = ServiceBuilder::new()
    .layer(RequestIdLayer::new())
    .service(tower::service_fn(|_req: http::Request<()>| async {
        Ok::<_, std::convert::Infallible>(http::Response::new(()))
    }));

Implementations

impl RequestIdLayer

pub fn new() -> Self

Create a new RequestIdLayer with an internal counter starting at 1.

Trait Implementations

impl Clone for RequestIdLayer

fn clone(&self) -> RequestIdLayer

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for RequestIdLayer

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl Default for RequestIdLayer

fn default() -> Self

Returns the “default value” for a type.

impl<S> Layer<S> for RequestIdLayer

type Service = RequestIdService<S>

The wrapped service

fn layer(&self, inner: S) -> Self::Service

Wrap the given service with the middleware, returning a new service that has been decorated with the middleware.