# Ambari Agent Configuration

    module.exports = (service) ->
      service = migration.call @, service, 'ryba/ambari/hdfagent', ['ryba', 'ambari', 'hdfagent'], require('nikita/lib/misc').merge require('.').use,
        java: key: ['java']
        hdf: key: ['ryba', 'hdf']
        ambari_server: key: ['ryba', 'ambari', 'hdfserver']
        ambari_repo: key: ['ryba', 'ambari', 'repo']
      @config.ryba ?= {}
      @config.ryba.ambari ?= {}
      options = @config.ryba.ambari.hdfagent = service.options

## Environment

      options.fqdn = service.node.fqdn
      options.sudo ?= false
      options.conf_dir ?= '/etc/ambari-agent/conf'

## Identities

      options.hadoop_group = merge {}, service.use.ambari_server[0].options.hadoop_group, options.hadoop_group
      options.group = merge service.use.ambari_server[0].options.group, options.group
      options.user = merge service.use.ambari_server[0].options.user, options.user

## Configuration

      options.config ?= {}
      options.config.server ?= {}
      options.config.server['hostname'] ?= "#{service.use.ambari_server[0].node.fqdn}"
      options.config.server['url_port'] = service.use.ambari_server[0].options.config['server.url_port']
      options.config.server['secured_url_port'] = service.use.ambari_server[0].options.config['server.secured_url_port']
      options.config.agent ?= {}
      options.config.agent['hostname_script'] ?= "#{options.conf_dir}/hostname.sh"

## Dependencies

    {merge} = require '@nikitajs/core/lib/misc'
    migration = require 'masson/lib/migration'