Struct Map

pub struct Map<A, F, Req, Res> { /* private fields */ }

Service for the map combinator, changing the type of a service’s response.

This is created by the ServiceExt::map method.

Trait Implementations

impl<A, F, Req, Res> Clone for Map<A, F, Req, Res>

where A: Clone, F: Clone,

fn clone(&self) -> Self

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl<A, F, Req, Res> Debug for Map<A, F, Req, Res>

where A: Debug,

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl<A, F, Req, Res> Service<Req> for Map<A, F, Req, Res>

where A: Service<Req>, F: Fn(A::Response) -> Res,

type Response = Res

Responses given by the service.

type Error = <A as Service<Req>>::Error

Errors produced by the service when polling readiness or executing call.

async fn ready(&self, ctx: ServiceCtx<'_, Self>) -> Result<(), Self::Error>

Returns when the service is able to process requests.

fn poll(&self, cx: &mut Context<'_>) -> Result<(), Self::Error>

Polls service from the current task.

async fn shutdown(&self)

Shutdown service.

async fn call( &self, req: Req, ctx: ServiceCtx<'_, Self>, ) -> Result<Self::Response, Self::Error>

Process the request and return the response asynchronously.

fn map<F, Res>(self, f: F) -> ServiceChain<Map<Self, F, Req, Res>, Req>

where Self: Sized, F: Fn(Self::Response) -> Res,

Map this service’s output to a different type, returning a new service of the resulting type.

fn map_err<F, E>(self, f: F) -> ServiceChain<MapErr<Self, F, E>, Req>

where Self: Sized, F: Fn(Self::Error) -> E,

Map this service’s error to a different error, returning a new service.