Trait RoleExtractor 

pub trait RoleExtractor:
    Send
    + Sync
    + 'static {
    // Required method
    fn extract(
        &self,
        parts: &mut Parts,
    ) -> impl Future<Output = Result<String>> + Send;
}

Resolves the authenticated user’s role from an incoming HTTP request.

Implement this trait on a concrete type and pass it to super::middleware(). The method receives mutable access to request parts so it can call axum extractors such as Session internally.

This trait uses RPITIT and is not object-safe. Use it as a concrete type parameter, never as dyn RoleExtractor.

Required Methods

fn extract( &self, parts: &mut Parts, ) -> impl Future<Output = Result<String>> + Send

Extracts the role string for the current request.

Return an Error (e.g., Error::unauthorized) to short-circuit the request. The middleware converts the error into an HTTP response immediately without forwarding to the inner service.

Dyn Compatibility

This trait is not dyn compatible.

In older versions of Rust, dyn compatibility was called "object safety", so this trait is not object safe.

Implementors