Trait AsyncPredicate 

pub trait AsyncPredicate<Request> {
    type Future: Future<Output = Result<Self::Request, BoxError>>;
    type Request;

    // Required method
    fn check(&mut self, request: Request) -> Self::Future;
}

Checks a request asynchronously.

Required Associated Types

type Future: Future<Output = Result<Self::Request, BoxError>>

The future returned by check.

type Request

The type of requests returned by check.

This request is forwarded to the inner service if the predicate succeeds.

Required Methods

fn check(&mut self, request: Request) -> Self::Future

Check whether the given request should be forwarded.

If the future resolves with Ok, the request is forwarded to the inner service.

Dyn Compatibility

This trait is dyn compatible.

In older versions of Rust, dyn compatibility was called "object safety".

Implementors

impl<F, T, U, R, E> AsyncPredicate<T> for F

where F: FnMut(T) -> U, U: Future<Output = Result<R, E>>, E: Into<BoxError>,

type Future = ErrInto<U, Box<dyn Error + Send + Sync>>

type Request = R