Struct Then 

pub struct Then<A, B> { /* private fields */ }

Service for the then combinator, chaining a computation onto the end of another service.

This is created by the Pipeline::then method.

Trait Implementations

impl<A: Clone, B: Clone> Clone for Then<A, B>

fn clone(&self) -> Then<A, B>

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl<A: Debug, B: Debug> Debug for Then<A, B>

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

Formats the value using the given formatter.

impl<A, B, St, Req> Service<St, Req> for Then<A, B>

where A: Service<St, Req>, B: Service<St, Result<A::Res, A::Error>, Error = A::Error>,

type Res = <B as Service<St, Result<<A as Service<St, Req>>::Res, <A as Service<St, Req>>::Error>>>::Res

Responses that the service could provide.

type Error = <B as Service<St, Result<<A as Service<St, Req>>::Res, <A as Service<St, Req>>::Error>>>::Error

Errors produced by the service while checking readiness or executing a call.

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

Processes a request and asynchronously returns the response.

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

Returns when the service is ready to process requests.

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

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>,

Call another service after call to this one has resolved successfully.

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

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

Wraps it in a container.