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

A modern Apache Kafka client for node.js

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

/**
 * ListGroups Response (Version: 0) => error_code [groups]
 *   error_code => INT16
 *   groups => group_id protocol_type
 *     group_id => STRING
 *     protocol_type => STRING
 */

const decodeGroup = decoder => ({
  groupId: decoder.readString(),
  protocolType: decoder.readString(),
})

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

  return {
    errorCode,
    groups,
  }
}

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

  return data
}

module.exports = {
  decodeGroup,
  decode,
  parse,
}