{
  "aggregations":
  {
      "by_hostname":
      {
          "terms": { "script": "doc['source-id'].value" }
      },
      "the_total_time":
      {
          "sum": { "field": "duration-ms" }
      },
      "da_klaient_do":
      {
          "sum": { "field": "data.client-count" }
      }
  }
}