Struct tower::limit::concurrency::ConcurrencyLimit

pub struct ConcurrencyLimit<T> { /* private fields */ }

Enforces a limit on the concurrent number of requests the underlying service can handle.

Implementations

impl<T> ConcurrencyLimit<T>

pub fn new(inner: T, max: usize) -> Self

Create a new concurrency limiter.

pub fn with_semaphore(inner: T, semaphore: Arc<Semaphore>) -> Self

Create a new concurrency limiter with a provided shared semaphore

pub fn get_ref(&self) -> &T

Get a reference to the inner service

pub fn get_mut(&mut self) -> &mut T

Get a mutable reference to the inner service

pub fn into_inner(self) -> T

Consume self, returning the inner service

Trait Implementations

impl<T: Clone> Clone for ConcurrencyLimit<T>

fn clone(&self) -> Self

Returns a copy of the value.

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

Performs copy-assignment from source.

impl<T: Debug> Debug for ConcurrencyLimit<T>

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

Formats the value using the given formatter.

impl<S> Load for ConcurrencyLimit<S>

where S: Load,

type Metric = <S as Load>::Metric

A comparable load metric.

fn load(&self) -> Self::Metric

Estimate the service’s current load.

impl<S, Request> Service<Request> for ConcurrencyLimit<S>

where S: Service<Request>,

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

Responses given by the service.

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

Errors produced by the service.

type Future = ResponseFuture<<S as Service<Request>>::Future>

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, request: Request) -> Self::Future

Process the request and return the response asynchronously.