@ethereumjs/devp2p/dist/esm/dpt/ban-list.js

A JavaScript implementation of ÐΞVp2p

import debugDefault from 'debug';
import { LRUCache } from 'lru-cache';
import { formatLogId } from "../util.js";
import { KBucket } from "./kbucket.js";
const debug = debugDefault('devp2p:dpt:ban-list');
const verbose = debugDefault('verbose').enabled;
export class BanList {
    constructor() {
        this._lru = new LRUCache({ max: 10000 });
        this.DEBUG =
            typeof window === 'undefined' ? (process?.env?.DEBUG?.includes('ethjs') ?? false) : false;
    }
    add(obj, maxAge) {
        for (const key of KBucket.getKeys(obj)) {
            this._lru.set(key, true, { ttl: maxAge });
            if (this.DEBUG) {
                debug(`Added peer ${formatLogId(key, verbose)}, size: ${this._lru.size}`);
            }
        }
    }
    has(obj) {
        return KBucket.getKeys(obj).some((key) => Boolean(this._lru.get(key)));
    }
}
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