kafka-pub-sub/validation/validateHeaders.js

Enterprise-grade Kafka publish/subscribe library for Node.js — producer pool, batch sending, DLQ, SSL/SASL, multi-broker, and real-world industry examples.

const Joi = require('joi');

/**
 * Validates Kafka message headers.
 *
 * @param {Object} headers - The headers object to validate.
 * @throws {Error} When headers is missing or not a plain object.
 */
const validateHeaders = (headers) => {
  if (headers === undefined || headers === null) {
    throw new Error('Invalid headers: No headers found');
  }

  const schema = Joi.object().keys().unknown();

  const { error } = schema.prefs({ errors: { label: 'key' } }).validate(headers);

  if (error) {
    throw new Error('Invalid headers: The type of headers should be object');
  }
};

module.exports = validateHeaders;