Rename variable field in json file using logstash

Elastic Stack Logstash
1

Hi,

I have a jason file which has event0,event1, event2......event50000. I would like to rename all of it to event in Logstash so that the field name is event and corresponding value of event0, event 1 are stored under event field.

I understand that there is no wild card which works in Logstash and ruby filter is one that we can use. Need help to write ruby code to rename it.

2

Hello.
Please work a bit harder on the question formulation and give proper input and expected output.
I can only guess that you want to produce from:

{"event1":"value1", "event2":"value2"}

the structure:

{"event":{"event1":"value1", "event2":"value2"}}
?