ntrnetwork/src/dpt/ban-list.js

Transledger peer to peer wire communication

const LRUCache = require('lru-cache')
const KBucket = require('./kbucket')

const debug = false;

class BanList {
  constructor () {
    this._lru = new LRUCache({ max: 30000 }) // 10k should be enough (each peer obj can has 3 keys)
  }

  add (obj, maxAge) {
    for (let key of KBucket.getKeys(obj)) {
      debug ? console.log(`${Date().toString().substring(0, 24)} BanList:add ${key}, size: ${this._lru.length}`) : null;
      this._lru.set(key, true, maxAge)
    }
  }

  has (obj) {
    return KBucket.getKeys(obj).some((key) => this._lru.get(key))
  }
}

module.exports = BanList