Use logstash to "read" from index when ingesting new data to calculate a field

Elastic Stack Logstash
1

Hi All,
Sorry for the bad heading. I have a question. Is it possible to read from an index when ingesting data to calculate a field?

I have some daily data that I ingest into an index. Now I want to use one of the fields to compare (do a calculation) it to previous data (from earlier days) that resides in the index. That means that I need to read from the index when ingesting the data. The output is a calculated field.
Is this possible?

Br
Cris

2

Hi Cristian,

Have a look to this filter: logstash-filter-elasticsearch

Regards
Romain

3

Thank you! Testing it.

4

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