Trait tonic_middleware::Middleware

source · 
pub trait Middleware<S>
where
    S: ServiceBound,
{
    // Required method
    fn call<'life0, 'async_trait>(
        &'life0 self,
        req: Request<Body>,
        service: S
    ) -> Pin<Box<dyn Future<Output = Result<Response<BoxBody>, S::Error>> + Send + 'async_trait>>
       where Self: 'async_trait,
             'life0: 'async_trait;
}
Expand description

The Middleware trait defines a generic interface for middleware components in a grpc service chain. Implementors of this trait can modify, observe, or otherwise interact with requests and responses in the service pipeline

If you need just intercept requests, pls can [RequestInterceptor]

§Type Parameters

  • S: A service bound that defines the requirements for the service being wrapped by the middleware.

See examples on GitHub

Required Methods§

source

fn call<'life0, 'async_trait>( &'life0 self, req: Request<Body>, service: S ) -> Pin<Box<dyn Future<Output = Result<Response<BoxBody>, S::Error>> + Send + 'async_trait>>
where Self: 'async_trait, 'life0: 'async_trait,

Processes an incoming request and forwards it to the given service.

Implementations may perform operations before or after forwarding the request, such as logging, metrics collection, or request modification.

§Parameters
  • req: The incoming request to process.
  • service: The service to forward the processed request to.
§Returns

A Result containing the response from the service or an error if one occurred during processing.

Implementors§