Trait viz::prelude::Middleware

pub trait Middleware<'a, Context>: Send + Sync + 'static {
    type Output;
    #[must_use]
    fn call(
        &'a self, 
        cx: &'a mut Context
    ) -> Pin<Box<dyn Future<Output = Self::Output> + 'a + Send, Global>>;
}

A handle trait for asynchronous context pipeline.

Associated Types

type Output

Returns Output

Required methods

#[must_use]

fn call(
    &'a self,
    cx: &'a mut Context
) -> Pin<Box<dyn Future<Output = Self::Output> + 'a + Send, Global>>

Invokes the handler within the given Context and then returns Output

Implementors

impl<'a> Handle<'a, Context> for RouteHandler

type Output = Result<Response, Error>

pub fn call(
    &'a self,
    cx: &'a mut Context
) -> Pin<Box<dyn Future<Output = <RouteHandler as Handle<'a, Context>>::Output> + 'a + Send, Global>>

impl<'a, Context, Output, F, Fut> Handle<'a, Context> for F where
    Context: 'a,
    F: Send + Sync + 'static + Fn(&'a mut Context) -> Fut,
    Fut: Future<Output = Output> + Send + 'a, 

type Output = Output

pub fn call(
    &'a self,
    cx: &'a mut Context
) -> Pin<Box<dyn Future<Output = <F as Handle<'a, Context>>::Output> + 'a + Send, Global>>

impl<'a, F, T> Handle<'a, Context> for HandlerSuper<F, T> where
    T: Extract + Send + Sync + 'static,
    F: for<'h> HandlerCamp<'h, T> + Send + Sync + 'static,
    <T as Extract>::Error: Into<Response>,
    <T as Extract>::Error: Send, 

type Output = Result<Response, Error>

pub fn call(
    &'a self,
    cx: &'a mut Context
) -> Pin<Box<dyn Future<Output = <HandlerSuper<F, T> as Handle<'a, Context>>::Output> + 'a + Send, Global>>

impl<'a, F, T> Handle<'a, Context> for HandlerWrapper<F, T> where
    T: Extract + Send + Sync + 'static,
    F: HandlerBase<T> + Send + Sync + 'static,
    <T as Extract>::Error: Into<Response>,
    <T as Extract>::Error: Send, 

type Output = Result<Response, Error>

pub fn call(
    &'a self,
    cx: &'a mut Context
) -> Pin<Box<dyn Future<Output = <HandlerWrapper<F, T> as Handle<'a, Context>>::Output> + 'a + Send, Global>>