Struct SentinelService 

pub struct SentinelService<S, R, B = ()>
where
    S: Service<R>,
{ /* private fields */ }

The sentinel middleware service in tower. If you the service request is from [http][] crate, and you are using nightly toolchain, you don’t need to provide a sentinel resource name extractor. The middleware will automatically extract the request uri.

Implementations

impl<S, R, B> SentinelService<S, R, B>

where S: Service<R>,

pub fn new(inner: S, role: ServiceRole) -> Self

pub fn with_extractor(self, extractor: fn(&R) -> String) -> Self

pub fn with_fallback( self, fallback: fn(&R, Error) -> Result<<S as Service<R>>::Response, BoxError>, ) -> Self

Trait Implementations

impl<S, R, B> Clone for SentinelService<S, R, B>

where S: Service<R> + Clone,

fn clone(&self) -> Self

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl<S, R> Service<R> for SentinelService<S, R>

where S: Service<R> + Clone + Send + 'static, <S as Service<R>>::Response: Send, <S as Service<R>>::Future: Send, <S as Service<R>>::Error: Into<BoxError>, R: Send + 'static,

You have to provide a sentinel resource name extractor

type Response = <S as Service<R>>::Response

Responses given by the service.

type Error = Box<dyn Error + Sync + Send>

Errors produced by the service.

type Future = Pin<Box<dyn Future<Output = Result<<SentinelService<S, R> as Service<R>>::Response, <SentinelService<S, R> as Service<R>>::Error>> + Send>>

The future response value.

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

Returns Poll::Ready(Ok(())) when the service is able to process requests.

fn call(&mut self, req: R) -> Self::Future

Process the request and return the response asynchronously.