mithril_aggregator/store/
verification_key_store.rs

1use async_trait::async_trait;
2use mithril_common::StdResult;
3use std::collections::HashMap;
4
5use mithril_common::entities::{Epoch, PartyId, Signer, SignerWithStake};
6
7/// Store and get signers verification keys for given epoch.
8///
9/// Important note: This store works on the **recording** epoch, the epoch at which the signers
10/// are signed into a certificate so they can sign single signatures at the next epoch.
11#[cfg_attr(test, mockall::automock)]
12#[async_trait]
13pub trait VerificationKeyStorer: Sync + Send {
14    /// Save the verification key, for the given [Signer] for the given [Epoch], returns the
15    /// previous values if one already existed.
16    async fn save_verification_key(
17        &self,
18        epoch: Epoch,
19        signer: SignerWithStake,
20    ) -> StdResult<Option<SignerWithStake>>;
21
22    /// Returns a HashMap of [Signer] indexed by [PartyId] for the given `epoch`.
23    async fn get_verification_keys(
24        &self,
25        epoch: Epoch,
26    ) -> StdResult<Option<HashMap<PartyId, Signer>>>;
27
28    /// Returns the list of signers for the given `epoch`.
29    async fn get_signers(&self, epoch: Epoch) -> StdResult<Option<Vec<SignerWithStake>>>;
30
31    /// Prune all verification keys that are at or below the given epoch.
32    async fn prune_verification_keys(&self, max_epoch_to_prune: Epoch) -> StdResult<()>;
33}
mithril_aggregator/store/verification_key_store.rs

mithril_aggregator/store/
verification_key_store.rs
