@suissa/universal-queues/src/core/envelope.ts

Factory universal para mensageria (RabbitMQ, Kafka, SQS) para sistemas distribuídos.

import { v4 as uuidv4 } from 'uuid';
import { createHash } from 'crypto';

export type Envelope = {
  headers: Record<string, any>;
  eventId: string;
  hash: string;
  origin: string;
};

export function enrichHeaders(
  exchangeOrTopic: string,
  routingKeyOrSubject: string,
  message: object,
  headers: Record<string, any> = {}
): Envelope {
  const eventId = headers['x-event-id'] || uuidv4();
  const hash = createHash('sha256').update(JSON.stringify(message)).digest('hex');
  const origin = `${exchangeOrTopic}.${routingKeyOrSubject}`;

  return {
    headers: { ...headers, 'x-event-id': eventId, 'x-event-hash': hash, 'x-origin': origin },
    eventId,
    hash,
    origin,
  };
}