58 lines
1.8 KiB
Markdown
58 lines
1.8 KiB
Markdown
---
|
|
layout: default
|
|
title: Script
|
|
nav_order: 30
|
|
has_children: false
|
|
parent: Search processors
|
|
grand_parent: Search pipelines
|
|
---
|
|
|
|
# Script processor
|
|
|
|
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]({{site.url}}{{site.baseurl}}/api-reference/search#request-body).
|
|
|
|
## Request fields
|
|
|
|
The following table lists all available request fields.
|
|
|
|
Field | Data type | Description
|
|
:--- | :--- | :---
|
|
`source` | Inline script | The script to run. Required.
|
|
`lang` | String | The script language. Optional. Only `painless` is supported.
|
|
`tag` | String | The processor's identifier. Optional.
|
|
`description` | String | A description of the processor. Optional.
|
|
`ignore_failure` | Boolean | If `true`, OpenSearch [ignores a failure]({{site.url}}{{site.baseurl}}/search-plugins/search-pipelines/index/#ignoring-processor-failures) of this processor and continues to run the remaining processors in the search pipeline. Optional. Default is `false`.
|
|
|
|
## 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:
|
|
|
|
```json
|
|
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 }"
|
|
}
|
|
}
|
|
]
|
|
}
|
|
```
|
|
{% include copy-curl.html %}
|