Elasticsearch ingest pipeline set processor and if condition

最近在研究 Elasticsearch ingest pipeline 的寫法，發現大部分的範例都是直接用 script processor 或是簡單的 set processor 做 1-on-1 的轉換。

但都沒有提到如果想要用 set processor + if 的用法阿~~

以下是我試成功的寫法:

[  
  {
    "set":{
      "if": "ctx.status == 'stopped'",
      "field":"status",
      "value":"0"
    }
  },
  {
    "set":{
      "if": "ctx.status == 'running'",
      "field":"status",
      "value":"1"
    }
  }
]

測試字串:

[{"_source": {"status":"stopped","cpu":4}}]

測試結果:

{
  "docs": [
    {
      "doc": {
        "_index": "_index",
        "_type": "_doc",
        "_id": "_id",
        "_source": {
          "cpu": 4,
          "status": "0"
        },
        "_ingest": {
          "timestamp": "2020-11-10T07:22:25.382542Z"
        }
      }
    }
  ]
}

轉換成功!!