Struct Cascade 

pub struct Cascade { /* private fields */ }

Ordered providers; only uncertain successful answers advance to the next hop.

Implementations

impl Cascade

pub fn new( providers: Vec<Arc<dyn Provider>>, escalate_below: f64, ) -> Result<Self>

Create a cascade of at least two providers with a finite [0,1] threshold.

Errors

Returns InvalidArgument if fewer than two providers are supplied or escalate_below is nonfinite or outside [0, 1].

Trait Implementations

impl Provider for Cascade

fn ask<'a>(&'a self, request: &'a Request) -> ProviderFuture<'a>

Answer the state and all its questions in one semantic invocation.