@lodestar/beacon-node/lib/chain/seenCache/seenAggregateAndProof.d.ts

A Typescript implementation of the beacon chain

import { BitArray } from "@chainsafe/ssz";
import { CommitteeIndex, Epoch, RootHex } from "@lodestar/types";
import { Metrics } from "../../metrics/index.js";
export type AggregationInfo = {
    aggregationBits: BitArray;
    trueBitCount: number;
};
/**
 * Although there are up to TARGET_AGGREGATORS_PER_COMMITTEE (16 for mainnet) AggregateAndProof messages per slot,
 * they tend to have the same aggregate attestation, or one attestation is non-strict superset of another,
 * the gossipsub messages-ids are different because they are really different SignedAggregateAndProof object.
 * This is used to address the following spec in p2p-interface gossipsub:
 * _[IGNORE]_ A valid aggregate attestation defined by `hash_tree_root(aggregate.data)` whose `aggregation_bits` is a
 * non-strict superset has _not_ already been seen.
 *
 * We have AggregatedAttestationPool op pool, however aggregated attestations are not added to that place while this does.
 */
export declare class SeenAggregatedAttestations {
    private readonly metrics;
    /**
     * Array of AttestingIndices by same attestation data root by epoch.
     * Note that there are at most TARGET_AGGREGATORS_PER_COMMITTEE (16) per attestation data.
     * */
    private readonly aggregateRootsByEpoch;
    private lowestPermissibleEpoch;
    constructor(metrics: Metrics | null);
    isKnown(targetEpoch: Epoch, committeeIndex: CommitteeIndex, attDataRoot: RootHex, aggregationBits: BitArray): boolean;
    add(targetEpoch: Epoch, committeeIndex: CommitteeIndex, attDataRoot: RootHex, newItem: AggregationInfo, checkIsKnown: boolean): void;
    prune(currentEpoch: Epoch): void;
}
/**
 * Make sure seenAggregationInfoArr is always in desc order based on trueBitCount so that isKnown can be faster
 */
export declare function insertDesc(seenAggregationInfoArr: AggregationInfo[], newItem: AggregationInfo): void;
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