Trait AroundMiddleware

pub trait AroundMiddleware {
    // Required method
    fn around<'async_trait>(
        self,
        handler: Box<dyn Handler>,
    ) -> Pin<Box<dyn Future<Output = Box<dyn Handler>> + 'async_trait>>
       where Self: 'async_trait;
}

AroundMiddleware are used to wrap and replace the Handler in the Middlewares chain.

AroundMiddleware produce Handlers through their around method, which is called once on insertion into the Middlewares chain or can be called manually outside of a Middlewares chain.

Required Methods

fn around<'async_trait>( self, handler: Box<dyn Handler>, ) -> Pin<Box<dyn Future<Output = Box<dyn Handler>> + 'async_trait>>

where Self: 'async_trait,

Produce a Handler from this AroundMiddleware given another Handler.

Usually this means wrapping the handler and editing the Request on the way in and the Response on the way out.

This is called only once, when an AroundMiddleware is added to the Middlewares chain using Middlewares::around, it is passed the Middlewares chain’s current Handler.

Implementors

impl<F> AroundMiddleware for F

where F: FnOnce(Box<dyn Handler>) -> Box<dyn Handler>,