Trait Backend 

pub trait Backend: Send + Sync {
    // Required method
    fn call<'life0, 'life1, 'async_trait>(
        &'life0 self,
        input: &'life1 [u8],
    ) -> Pin<Box<dyn Future<Output = Result<ResponseRecord, ShadowError>> + Send + 'async_trait>>
       where Self: 'async_trait,
             'life0: 'async_trait,
             'life1: 'async_trait;
}

The async surface the shadower drives. Implement once per transport.

Required Methods

fn call<'life0, 'life1, 'async_trait>( &'life0 self, input: &'life1 [u8], ) -> Pin<Box<dyn Future<Output = Result<ResponseRecord, ShadowError>> + Send + 'async_trait>>

where Self: 'async_trait, 'life0: 'async_trait, 'life1: 'async_trait,

Issue a call. The input is opaque so this trait works for HTTP bodies, gRPC bytes, raw JSON, MessagePack — anything that fits in a &[u8].

Implementors