elasticsearch/docs/reference/enrich-processor/gsub-processor.md

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Gsub	https://www.elastic.co/guide/en/elasticsearch/reference/current/gsub-processor.html

Gsub processor [gsub-processor]

Converts a string field by applying a regular expression and a replacement. If the field is an array of string, all members of the array will be converted. If any non-string values are encountered, the processor will throw an exception.

$gsub-options

Name	Required	Default	Description
field	yes	-	The field to apply the replacement to
pattern	yes	-	The pattern to be replaced
replacement	yes	-	The string to replace the matching patterns with
target_field	no	field	The field to assign the converted value to, by default field is updated in-place
ignore_missing	no	false	If true and field does not exist or is null, the processor quietly exits without modifying the document
description	no	-	Description of the processor. Useful for describing the purpose of the processor or its configuration.
if	no	-	Conditionally execute the processor. See Conditionally run a processor.
ignore_failure	no	false	Ignore failures for the processor. See Handling pipeline failures.
on_failure	no	-	Handle failures for the processor. See Handling pipeline failures.
tag	no	-	Identifier for the processor. Useful for debugging and metrics.

{
  "gsub": {
    "field": "field1",
    "pattern": "\\.",
    "replacement": "-"
  }
}