原文地址: https://www.elastic.co/guide/en/elasticsearch/reference/7.7/json-processor.html, 原文档版权归 www.elastic.co 所有
IMPORTANT: No additional bug fixes or documentation updates will be released for this version. For the latest information, see the current release documentation.
Elasticsearch Guide [7.7] » Ingest node » Processors » JSON Processor
« Join Processor KV Processor »

JSON Processoredit

Converts a JSON string into a structured JSON object.

Table 54. Json Options

Name Required Default Description

field

yes

-

The field to be parsed

target_field

no

field

The field to insert the converted structured object into

add_to_root

no

false

Flag that forces the serialized json to be injected into the top level of the document. target_field must not be set when this option is chosen.

if

no

-

Conditionally execute this processor.

on_failure

no

-

Handle failures for this processor. See Handling Failures in Pipelines.

ignore_failure

no

false

Ignore failures for this processor. See Handling Failures in Pipelines.

tag

no

-

An identifier for this processor. Useful for debugging and metrics.

All JSON-supported types will be parsed (null, boolean, number, array, object, string).

Suppose you provide this configuration of the json processor:

{
  "json" : {
    "field" : "string_source",
    "target_field" : "json_target"
  }
}

If the following document is processed:

{
  "string_source": "{\"foo\": 2000}"
}

after the json processor operates on it, it will look like:

{
  "string_source": "{\"foo\": 2000}",
  "json_target": {
    "foo": 2000
  }
}

If the following configuration is provided, omitting the optional target_field setting:

{
  "json" : {
    "field" : "source_and_target"
  }
}

then after the json processor operates on this document:

{
  "source_and_target": "{\"foo\": 2000}"
}

it will look like:

{
  "source_and_target": {
    "foo": 2000
  }
}

This illustrates that, unless it is explicitly named in the processor configuration, the target_field is the same field provided in the required field configuration.

« Join Processor KV Processor »