kafkajs/src/protocol/requests/apiVersions/v0/response.js

A modern Apache Kafka client for node.js

const Decoder = require('../../../decoder')
const { failure, createErrorFromCode, failIfVersionNotSupported } = require('../../../error')

/**
 * ApiVersionResponse => ApiVersions
 *   ErrorCode = INT16
 *   ApiVersions = [ApiVersion]
 *     ApiVersion = ApiKey MinVersion MaxVersion
 *       ApiKey = INT16
 *       MinVersion = INT16
 *       MaxVersion = INT16
 */

const apiVersion = decoder => ({
  apiKey: decoder.readInt16(),
  minVersion: decoder.readInt16(),
  maxVersion: decoder.readInt16(),
})

const decode = async rawData => {
  const decoder = new Decoder(rawData)
  const errorCode = decoder.readInt16()

  failIfVersionNotSupported(errorCode)

  return {
    errorCode,
    apiVersions: decoder.readArray(apiVersion),
  }
}

const parse = async data => {
  if (failure(data.errorCode)) {
    throw createErrorFromCode(data.errorCode)
  }

  return data
}

module.exports = {
  decode,
  parse,
}