Trait Predicate

pub trait Predicate<Request> {
    type Request;

    // Required method
    fn check(
        &mut self,
        request: Request,
    ) -> Result<Self::Request, Box<dyn Error + Send + Sync>>;
}

Checks a request synchronously.

Required Associated Types

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, ) -> Result<Self::Request, Box<dyn Error + Send + Sync>>

Check whether the given request should be forwarded.

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

Implementors

impl<F, T, R, E> Predicate<T> for F

where F: FnMut(T) -> Result<R, E>, E: Into<Box<dyn Error + Send + Sync>>,

type Request = R