Module burger::steer

Given a collection of services and a Picker, the steer function constructs a Steer Service.

The Service::acquire on Steer acquires all permits from the collection, the Picker then selects which permit and Service to Service::call.

Example

use burger::*;

async fn main() {
struct AlwaysFirst;

impl<S, Request> steer::Picker<S, Request> for AlwaysFirst {
    fn pick(&self, services: &[S], _request: &Request) -> usize {
        0
    }
}

let svcs = (0..10).map(|index| service_fn(move |x| async move { index * x }));
let picker = AlwaysFirst;
let svc = steer(svcs, picker);
let response = svc.oneshot(7).await;
assert_eq!(0, response);

Load

This has no Load implementation.

Structs

• Steer
  A wrapper Service for the steer constructor.
• SteerPermit
  The Service::Permit type for Steer.

Traits

• Picker
  Picks a service from an underlying collection of services to steer requests.

Functions

• steer
  Constructs a Service from a collection of services whose Service::call is steered via a Picker.