elasticsearch-js/docs/reference/api/IngestGrokProcessor.md

IngestGrokProcessor [interface-IngestGrokProcessor]

Name	Type	Description
ecs_compatibility	string	Must be disabled or v1. If v1, the processor uses patterns with Elastic Common Schema (ECS) field names.
field	Field	The field to use for grok expression parsing.
ignore_missing	boolean	If true and field does not exist or is null, the processor quietly exits without modifying the document.
pattern_definitions	Record<string, string>	A map of pattern-name and pattern tuples defining custom patterns to be used by the current processor. Patterns matching existing names will override the pre-existing definition.
patterns	GrokPattern[]	An ordered list of grok expression to match and extract named captures with. Returns on the first expression in the list that matches.
trace_match	boolean	When true, _ingest._grok_match_index will be inserted into your matched document’s metadata with the index into the pattern found in patterns that matched.