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.

Dyn Compatibility

This trait is dyn compatible.

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

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