npm package discovery and stats viewer.

Discover Tips

  • General search

    [free text search, go nuts!]

  • Package details

    pkg:[package-name]

  • User packages

    @[username]

Sponsor

Optimize Toolset

I’ve always been into building performant and accessible sites, but lately I’ve been taking it extremely seriously. So much so that I’ve been building a tool to help me optimize and monitor the sites that I build to make sure that I’m making an attempt to offer the best experience to those who visit them. If you’re into performant, accessible and SEO friendly sites, you might like it too! You can check it out at Optimize Toolset.

About

Hi, 👋, I’m Ryan Hefner  and I built this site for me, and you! The goal of this site was to provide an easy way for me to check the stats on my npm packages, both for prioritizing issues and updates, and to give me a little kick in the pants to keep up on stuff.

As I was building it, I realized that I was actually using the tool to build the tool, and figured I might as well put this out there and hopefully others will find it to be a fast and useful way to search and browse npm packages as I have.

If you’re interested in other things I’m working on, follow me on Twitter or check out the open source projects I’ve been publishing on GitHub.

I am also working on a Twitter bot for this site to tweet the most popular, newest, random packages from npm. Please follow that account now and it will start sending out packages soon–ish.

Open Software & Tools

This site wouldn’t be possible without the immense generosity and tireless efforts from the people who make contributions to the world and share their work via open source initiatives. Thank you 🙏

© 2026 – Pkg Stats / Ryan Hefner

@yzion/queue-lib

v1.0.2

Published

Biblioteca de filas e workers com RabbitMQ via token e Vault

Readme

QueueLib - Biblioteca de Filas e Workers com RabbitMQ, Vault e Tokens

Biblioteca Node.js/TypeScript para gerenciamento de filas e workers com RabbitMQ, suporte a token via Vault, dead-letter queues (DLQ) e integração simples com qualquer aplicação.


Publish

npm login
npm publish --access public

Instalação


npm install @yzion/queue-lib
yarn add @yzion/queue-lib

Uso da lib

Configuração

A biblioteca suporta configuração via:

Token direto: passando token nas opções do QueueManager.

Vault: usando VaultClient para obter o token em runtime.

Fallback .env: se Vault ou token não estiverem disponíveis.

Exemplo .env:

RABBITMQ_HOST=localhost
RABBITMQ_USER=guest
RABBITMQ_TOKEN=DEV_TOKEN
VAULT_URL=http://localhost:4000

Uso Básico

// QueueManager

import { QueueManager } from 'queue-lib';
import { VaultClient } from 'queue-lib';

const vault = new VaultClient({
  baseUrl: 'http://localhost:4000',
  secretName: 'rabbitmq-token-test'
});

const qm = new QueueManager({
  host: 'localhost',
  username: 'guest',
  protocol: 'amqps',
  vault
});

await qm.connect();
console.log('Conectado ao RabbitMQ');

// Criar fila com DLQ
await qm.createQueue('ordersQueue');

// Enviar mensagem
await qm.sendMessage('ordersQueue', { id: 1, product: 'Produto Teste' });

WorkerManager
import { WorkerManager } from 'queue-lib';

const wm = new WorkerManager(qm);

// Registrar worker com retries
wm.registerWorker(
  'ordersQueue',
  async (msg) => {
    const content = JSON.parse(msg.content.toString());
    console.log('Processando pedido:', content);
    // lógica de processamento
  },
  { retries: 3 }
);

Events


// O QueueManager emite eventos para monitoramento:

//  connected → conexão estabelecida
//  queue:sent → mensagem enviada
//  closed → conexão fechada


// Exemplo:

qm.logger.on('ordersQueue:sent', (msg) => {
  console.log('Mensagem enviada:', msg);
});

Tests

A biblioteca possui testes unitários e integração.

Rodar todos os testes:

npm test


// Unitários: QueueManager, WorkerManager, VaultClient

// Integração: API simulada com express e workers

// Boas práticas

// Tokens e segurança

// Prefira usar Vault para gerar tokens dinâmicos.

// Nunca versionar tokens reais em repositório.

// DLQ

// Sempre use DLQ para não perder mensagens críticas.

// Fallback

// .env deve ser usado apenas como fallback ou em dev/local.


// Exemplo de integração com API:

import express from 'express';
import { QueueManager, WorkerManager, VaultClient } from 'queue-lib';

const app = express();
app.use(express.json());

const vault = new VaultClient({ baseUrl: 'http://localhost:4000', secretName: 'rabbitmq-token-test' });
const qm = new QueueManager({ host: 'localhost', username: 'guest', vault });

await qm.connect();
await qm.createQueue('apiOrdersQueue');

const wm = new WorkerManager(qm);
wm.registerWorker('apiOrdersQueue', async (msg) => {
  const content = JSON.parse(msg.content.toString());
  console.log('Processando via API:', content);
  (qm as any).channel.ack(msg);
});

app.post('/orders', async (req, res) => {
  await qm.sendMessage('apiOrdersQueue', req.body);
  res.status(201).send({ status: 'queued' });
});

app.listen(3000, () => console.log('API rodando na porta 3000'));

Licença

MIT © Carlivan Pereira