Convert processor

Converts a field in the currently ingested document to a different type, such as converting a string to an integer. If the field value is an array, all members will be converted.

The supported types include: integer, long, float, double, string, boolean, ip, and auto.

Specifying boolean will set the field to true if its string value is equal to true (ignore case), to false if its string value is equal to false (ignore case), or it will throw an exception otherwise.

Specifying ip will set the target field to the value of field if it contains a valid IPv4 or IPv6 address that can be indexed into an IP field type.

Specifying auto will attempt to convert the string-valued field into the closest non-string, non-IP type. For example, a field whose value is "true" will be converted to its respective boolean type: true. Do note that float takes precedence of double in auto. A value of "242.15" will "automatically" be converted to 242.15 of type float. If a provided field cannot be appropriately converted, the processor will still process successfully and leave the field value as-is. In such a case, target_field will be updated with the unconverted field value.

PUT _ingest/pipeline/my-pipeline-id
{
  "description": "converts the content of the id field to an integer",
  "processors" : [
    {
      "convert" : {
        "field" : "id",
        "type": "integer"
      }
    }
  ]
}