HTTP_Poller send output to elasticsearch

Elastic Stack Logstash
3

Thanks a lot Rom1! I hade to change it to

add_field => {
"@name" => "%{[_source][doc][name]}"
"@state" => "%{[_source][doc][state]}"
}

But the problem is, there is still nothing sent to Elasticsearch. I tried to change the output of elasticsearch to this:

elasticsearch {
    hosts => "localhost"
    index => "services-%{+YYYY.MM.dd}"
    user => "elastic"
    password => "*****"
}

Now it creates at least the index, but there are no fields in it.