elasticsearch - 每次在Elasticsearch中更新文档时自动增加字段值

Question

这是有效载荷

 {
  "videourl": "*****",
"name": "ABCqq",
"description": "AAAnb",
"tags": "#AAAzx",
"uploadedtime": "2020-02-24T05:48:37.527Z",
"uploadedby": "Dr AAAgh",
"thumbnail": "http://",
"duration": "5:32",
"postedby": "AAAdf",
"doctorimage": "AAA12",
"doctorname": "nnn",
}

格式为

{"_index": "rwe",
"_type": "_doc",
"_id": "8wEed3ABcYN_H8khP4hB",
"_score": 1,
"_source": {
    "videourl": "*****",
    "name": "ABCqq",
    "description": "AAAnb",
    "tags": "#AAAzx",
    "uploadedtime": "2020-02-24T05:48:37.527Z",
    "uploadedby": "Dr AAAgh",
    "thumbnail": "http://",
    "duration": "5:32",
    "postedby": "AAAdf",
    "doctorimage": "AAA12",
    "doctorname": "nnn"
}
}

这是一个文档，我想在每次更新此文档时增加字段的计数值。
我们必须添加名称为 counter_value 的新字段。

预期结果

{"_index": "rwe",
"_type": "_doc",
"_id": "8wEed3ABcYN_H8khP4hB",
"_score": 1,
"_source": {
    "videourl": "*****",
    "name": "ABCqq",
    "description": "AAAnb",
    "tags": "#AAAzx",
    "uploadedtime": "2020-02-24T05:48:37.527Z",
    "uploadedby": "Dr AAAgh",
    "thumbnail": "http://",
    "duration": "5:32",
    "postedby": "AAAdf",
    "doctorimage": "AAA12",
    "doctorname": "nnn",
    "counter_value": 1
}
}

Answer 1

您可以通过脚本增加计数器的数量，请参见here和here。但是，elastic已经有一个version字段。根据您的用例，将version参数添加到查询中就足够了，如here所述:

curl -XGET 'http://localhost:9200/rwe/_search?version=true'