Logstash - Adding http_poller meta data into document

Elastic Stack Logstash
1

The value in this field is what i require -> http_poller_metadata.input.http_poller.request.name

mutate {
      add_field => { "metric" => "[http_poller_metadata][request][name]" }
    }

Not sure the notation when the input plugin is using -> metadata_target => "http_poller_metadata"

2

It looks OK how did you add the field, however, it can be literally http_poller_metadata.input.http_poller.request.name. Check how JSON looks like in Kibana or in ruby debugger.

3

It gives me nothing.