@aikidosec/firewall/agent/Users.js

Zen by Aikido is an embedded Web Application Firewall that autonomously protects Node.js apps against common and critical attacks

"use strict";
Object.defineProperty(exports, "__esModule", { value: true });
exports.Users = void 0;
class Users {
    constructor(maxEntries = 1000) {
        this.maxEntries = maxEntries;
        this.users = new Map();
    }
    addUser(user) {
        const existing = this.users.get(user.id);
        if (existing) {
            existing.name = user.name;
            existing.lastIpAddress = user.lastIpAddress;
            existing.lastSeenAt = Date.now();
            return;
        }
        if (this.users.size >= this.maxEntries) {
            const firstAdded = this.users.keys().next().value;
            if (firstAdded) {
                this.users.delete(firstAdded);
            }
        }
        this.users.set(user.id, {
            id: user.id,
            name: user.name,
            lastIpAddress: user.lastIpAddress,
            firstSeenAt: Date.now(),
            lastSeenAt: Date.now(),
        });
    }
    asArray() {
        return Array.from(this.users.entries()).map(([_, user]) => {
            return {
                id: user.id,
                name: user.name,
                lastIpAddress: user.lastIpAddress,
                firstSeenAt: user.firstSeenAt,
                lastSeenAt: user.lastSeenAt,
            };
        });
    }
    clear() {
        this.users.clear();
    }
}
exports.Users = Users;