Trait QueryStrategy 

pub trait QueryStrategy<IR, OR = IR> {
    // Required method
    fn process(&mut self, peer_id: PeerId, response: IR) -> QueryStep<OR>;

    // Provided method
    fn process_error(
        &mut self,
        _peer_id: PeerId,
        _error: &ServerError,
    ) -> QueryStep<OR> { ... }
}

Fedimint query strategy

Due to federated security model each Fedimint client API call to the Federation might require a different way to process one or more required responses from the Federation members. This trait abstracts away the details of each specific strategy for the generic client Api code.

Required Methods

fn process(&mut self, peer_id: PeerId, response: IR) -> QueryStep<OR>

Provided Methods

fn process_error( &mut self, _peer_id: PeerId, _error: &ServerError, ) -> QueryStep<OR>

Called when a peer’s request fails, so a strategy can tell “still waiting” apart from “will never answer”.

Defaults to QueryStep::Continue, leaving failed peers entirely to the caller’s error accounting, which is what every strategy other than ThresholdAgreement wants.

Implementors

impl<R, T> QueryStrategy<R, BTreeMap<PeerId, T>> for FilterMapThreshold<R, T>

impl<R, T> QueryStrategy<R, T> for FilterMap<R, T>

impl<R: Eq + Clone> QueryStrategy<R> for ThresholdConsensus<R>

impl<R: Eq + Clone> QueryStrategy<R, Result<R, BTreeMap<PeerId, R>>> for ThresholdAgreement<R>