BackendRouter

ic_bn_lib::utils::backend_router

Struct BackendRouter 

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pub struct BackendRouter<T, RQ = (), RS = (), E = ()> { /* private fields */ }
Expand description

Routes the request to healthy nodes provided by HealthChecker. Uses Distributor with given Strategy to distribute them.

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impl<T, RQ, RS, E> BackendRouter<T, RQ, RS, E>
where T: Clone + Display + Debug + Send + Sync + 'static, RQ: Send + 'static, RS: Send + 'static, E: Send + 'static,

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pub fn new( backends: &[(T, usize)], executor: Arc<dyn ExecutesRequest<T, Request = RQ, Response = RS, Error = E>>, checker: Arc<dyn ChecksTarget<T>>, strategy: Strategy, check_interval: Duration, health_check_metrics: Metrics, distributor_metrics: Metrics, ) -> Self

Create a new BackendRouter

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pub async fn execute(&self, request: RQ) -> Result<RS, Error<E>>

Executes the request

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pub fn subscribe(&self) -> Receiver<Arc<Vec<(T, TargetState)>>>

Subscribes to notifications when the set of healthy nodes changes. Returns a channel which emits a new set of healthy nodes.

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pub fn get_healthy(&self) -> Arc<Vec<T>>

Returns the current set of healthy targets

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pub async fn stop(&self)

Stops the router

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impl<T: Debug, RQ: Debug, RS: Debug, E: Debug> Debug for BackendRouter<T, RQ, RS, E>

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

Formats the value using the given formatter. Read more

Auto Trait Implementations§

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impl<T, RQ, RS, E> Freeze for BackendRouter<T, RQ, RS, E>

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impl<T, RQ = (), RS = (), E = ()> !RefUnwindSafe for BackendRouter<T, RQ, RS, E>

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impl<T, RQ, RS, E> Send for BackendRouter<T, RQ, RS, E>
where T: Sync + Send,

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impl<T, RQ, RS, E> Sync for BackendRouter<T, RQ, RS, E>
where T: Sync + Send,

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impl<T, RQ, RS, E> Unpin for BackendRouter<T, RQ, RS, E>

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impl<T, RQ = (), RS = (), E = ()> !UnwindSafe for BackendRouter<T, RQ, RS, E>

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impl<T> Any for T
where T: 'static + ?Sized,

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Converts self into a Left variant of Either<Self, Self> if into_left(&self) returns true. Converts self into a Right variant of Either<Self, Self> otherwise. Read more
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impl<T> IntoRequest<T> for T

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fn into_request(self) -> Request<T>

Wrap the input message T in a tonic::Request
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