@lodestar/beacon-node/lib/db/repositories/attesterSlashing.js

A Typescript implementation of the beacon chain

import { Repository } from "@lodestar/db";
import { ssz } from "@lodestar/types";
import { Bucket, getBucketNameByValue } from "../buckets.js";
/**
 * AttesterSlashing indexed by root
 *
 * Added via gossip or api
 * Removed when included on chain or old
 */
export class AttesterSlashingRepository extends Repository {
    constructor(config, db) {
        const bucket = Bucket.allForks_attesterSlashing;
        /**
         * We are using `ssz.electra.AttesterSlashing` type since it is backward compatible with `ssz.phase0.AttesterSlashing`
         * But this also means the length of `attestingIndices` is not checked/enforced here. Need to make sure length
         * is correct before writing to db.
         */
        const type = ssz.electra.AttesterSlashing;
        super(config, db, bucket, type, getBucketNameByValue(bucket));
    }
    async hasAll(attesterIndices = []) {
        const attesterSlashings = (await this.values()) ?? [];
        const indices = new Set();
        for (const slashing of attesterSlashings) {
            for (const index of slashing.attestation1.attestingIndices)
                indices.add(index);
            for (const index of slashing.attestation2.attestingIndices)
                indices.add(index);
        }
        for (const attesterIndice of attesterIndices) {
            if (!indices.has(attesterIndice)) {
                return false;
            }
        }
        return true;
    }
}
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