Enum FallbackStrategy 

pub enum FallbackStrategy<Req, Res, E> {
    Value(Res),
    ValueFn(ValueFn<Res>),
    FromError(FromErrorFn<Res, E>),
    FromRequestError(FromRequestErrorFn<Req, Res, E>),
    Service(ServiceFn<Req, Res, E>),
    Exception(ExceptionFn<E>),
}

The strategy used to produce a fallback response.

Variants

Value(Res)

Return a static value (cloned for each fallback).

ValueFn(ValueFn<Res>)

Generate a value using a function (no Clone required).

FromError(FromErrorFn<Res, E>)

Compute a response from the error.

FromRequestError(FromRequestErrorFn<Req, Res, E>)

Compute a response from both the request and error.

Service(ServiceFn<Req, Res, E>)

Call a backup service asynchronously. The function takes the request and returns a future.

Exception(ExceptionFn<E>)

Transform the error into a different error (still fails, but with transformed error).

Trait Implementations

impl<Req, Res, E> Clone for FallbackStrategy<Req, Res, E>

where Res: Clone,

fn clone(&self) -> Self

Returns a duplicate of the value.

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

Performs copy-assignment from source.