You're viewing version 2.17 of the OpenSearch documentation. This version is no longer maintained. For the latest version, see the current documentation. For information about OpenSearch version maintenance, see Release Schedule and Maintenance Policy.

Script processor

Introduced 2.8

The script search request processor intercepts a search request and adds an inline Painless script that is run on incoming requests. The script can only run on the following request fields:

• from
• size
• explain
• version
• seq_no_primary_term
• track_scores
• track_total_hits
• min_score
• terminate_after
• profile

For request field definitions, see search request fields.

Request body fields

The following table lists all available request fields.

Example

The following request creates a search pipeline with a script request processor. The script limits score explanation to only one document because explain is an expensive operation:

PUT /_search/pipeline/explain_one_result
{
  "description": "A pipeline to limit the explain operation to one result only",
  "request_processors": [
    {
      "script": {
        "lang": "painless",
        "source": "if (ctx._source['size'] > 1) { ctx._source['explain'] = false } else { ctx._source['explain'] = true }"
      }
    }
  ]
}