I am using Logstash split filter plugin as described in this page : https://www.elastic.co/guide/en/logstash/current/plugins-filters-split.html
Let say I have data looking like that :
{"log_id": "abcd", "logs": [{"val": 3}, {"val": 4}]}
Using the split filter like this :
filter { split { field => "logs" } }
Would output documents as follow :
{"log_id": "abcd", "logs": {"val": 3}}
{"log_id": "abcd", "logs": {"val": 4}}
I would like to extract the index of the splited document to use as unique id as follow :
{"log_id": "abcd", "logs": {"val": 3}, "unique_id": "abcd-0"}
{"log_id": "abcd", "logs": {"val": 4}, "unique_id": "abcd-1"}
This is the patch I applied to fix this :
88c88
< splits.each do |value|
---
> splits.each_with_index do |value, index|
97a98
> event_split.set("_split_idx", index)