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

IngestDateIndexNameProcessor [interface-IngestDateIndexNameProcessor]

Name	Type	Description
date_formats	string[]	An array of the expected date formats for parsing dates / timestamps in the document being preprocessed. Can be a java time pattern or one of the following formats: ISO8601, UNIX, UNIX_MS, or TAI64N.
date_rounding	string	How to round the date when formatting the date into the index name. Valid values are: y (year), M (month), w (week), d (day), h (hour), m (minute) and s (second). Supports template snippets.
field	Field	The field to get the date or timestamp from.
index_name_format	string	The format to be used when printing the parsed date into the index name. A valid java time pattern is expected here. Supports template snippets.
index_name_prefix	string	A prefix of the index name to be prepended before the printed date. Supports template snippets.
locale	string	The locale to use when parsing the date from the document being preprocessed, relevant when parsing month names or week days.
timezone	string	The timezone to use when parsing the date and when date math index supports resolves expressions into concrete index names.