Struct tower::load::pending_requests::PendingRequests

pub struct PendingRequests<S, C = CompleteOnResponse> { /* private fields */ }

Measures the load of the underlying service using the number of currently-pending requests.

Implementations

impl<S, C> PendingRequests<S, C>

pub fn new(service: S, completion: C) -> Self

Wraps an S-typed service so that its load is tracked by the number of pending requests.

Trait Implementations

impl<S: Debug, C: Debug> Debug for PendingRequests<S, C>

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

Formats the value using the given formatter.

impl<S, C> Load for PendingRequests<S, C>

type Metric = Count

A comparable load metric.

fn load(&self) -> Count

Estimate the service’s current load.

impl<S, C, Request> Service<Request> for PendingRequests<S, C>

where S: Service<Request>, C: TrackCompletion<Handle, S::Response>,

type Response = <C as TrackCompletion<Handle, <S as Service<Request>>::Response>>::Output

Responses given by the service.

type Error = <S as Service<Request>>::Error

Errors produced by the service.

type Future = TrackCompletionFuture<<S as Service<Request>>::Future, C, Handle>

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: Request) -> Self::Future

Process the request and return the response asynchronously.