How to use percolator while indexing the document using logstash(pre-processing )

Elastic Stack Logstash
2

I've ventured into creating such a Logstash filter for percolating events inside the Logstash pipeline. It runs very similarly to the elasticsearch Logstash filter.

You can find it here

This filter supports percolation of ad-hoc and/or existing documents, e.g.

# percolates the event itself
percolate {
    hosts => ["localhost:9200"]
    index => "my_index"
    type => "my_type"
}

# percolates the sub-structure available in event['my_field']
percolate {
    hosts => ["localhost:9200"]
    index => "my_index"
    type => "my_type"
    target => "my_field"
}

# percolates the existing document having the id as specified in the event id field
percolate {
    hosts => ["localhost:9200"]
    index => "my_index"
    type => "my_type"
    id => "%{id}"
}

More info at https://github.com/elastic/logstash/issues/2187#issuecomment-216760668