Struct MapState 

pub struct MapState<S, St> { /* private fields */ }

A service that substitutes fixed state for the outer pipeline state.

Trait Implementations

impl<S: Clone, St: Clone> Clone for MapState<S, St>

fn clone(&self) -> MapState<S, St>

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl<S: Debug, St: Debug> Debug for MapState<S, St>

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

Formats the value using the given formatter.

impl<OtSt, S, St, Req> Service<OtSt, Req> for MapState<S, St>

where S: Service<St, Req>,

type Res = <S as Service<St, Req>>::Res

Response produced by the service.

type Error = <S as Service<St, Req>>::Error

Error produced while checking readiness or processing a request.

async fn call( &self, req: Req, ctx: Ctx<'_, Self, OtSt>, ) -> Result<S::Res, S::Error>

Processes a request and asynchronously returns the response.

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

Waits until the service is ready to process a request.

async fn shutdown(&self, ctx: Ctx<'_, Self, OtSt>)

Shuts down the service.

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

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

Maps this service’s output to a different type, returning a new service.

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

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

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

fn and_then<Next, F>(self, f: F) -> ServiceChain<AndThen<Self, Next>, St, Req>

where Self: Sized, Next: Service<St, Self::Res, Error = Self::Error>, F: IntoService<Next, St, Self::Res>,

Calls another service after this service completes successfully.

fn pipeline(self, st: St) -> Pipeline<Req, Self::Res, Self::Error>

where Self: Sized + 'static, St: 'static, Req: 'static,

Wraps this service and its state in a Pipeline.