Merge two urls json at one doc

[pastechecker (Charlie)]

There you go:
The easiest solution is to load the document with the same ID to the ES and let it handle the merge there.

input {
	http_poller {
	urls => {
		station_information => "https://gbfs.nextbike.net/maps/gbfs/v1/nextbike_le/de/station_information.json"
		station_status => "https://gbfs.nextbike.net/maps/gbfs/v1/nextbike_le/de/station_status.json"
		}
	request_timeout => 60
	schedule => { every => "10s"}
	codec => "json"
	}
}

filter {
	if [data][stations][1]{
		split {
			field => "[data][stations]"
		}
	}

	fingerprint {
		method => "MD5"
		concatenate_sources => true
		source => ["[stations][station_id]"]
		target => ["fingerprint"]
	}
}

output {
	elasticsearch {
		hosts => ["192.168.1.1:9200", "192.168.1.2:9200"]
		index => "stations"
		action => "update"
		document_id => "%{fingerprint}"
	}
}

Good luck with your endeavor!