Struct RpcMiddleware

pub struct RpcMiddleware { /* private fields */ }

Middleware for RPC calls

Implementations

impl RpcMiddleware

pub fn new(metrics: RpcMetrics, transport_label: &str) -> Self

Create an instance of middleware.

• metrics: Will be used to report statistics.
• transport_label: The label that is used when reporting the statistics.

Trait Implementations

impl<M: Metadata> Middleware<M> for RpcMiddleware

type Future = Box<dyn Future<Error = (), Item = Option<Response>> + Send>

A returned request future.

type CallFuture = Box<dyn Future<Error = (), Item = Option<Output>> + Send>

A returned call future.

fn on_request<F, X>( &self, request: Request, meta: M, next: F, ) -> Either<FutureResponse, X>

where F: Fn(Request, M) -> X + Send + Sync, X: Future<Item = Option<Response>, Error = ()> + Send + 'static,

Method invoked on each request. Allows you to either respond directly (without executing RPC call) or do any additional work before and/or after processing the request.

fn on_call<F, X>( &self, call: Call, meta: M, next: F, ) -> Either<Self::CallFuture, X>

where F: Fn(Call, M) -> X + Send + Sync, X: Future<Item = Option<Output>, Error = ()> + Send + 'static,

Method invoked on each call inside a request.