logstash 5.* http input acting as elasticsearch

gistfile1.txt

input {
  http {
    port  => 9200
    tags  => ["input-http-elasticsearch"]
    id    => "input-http-9200"
    codec => "json"
  }
}

filter {
  if "input-http-elasticsearch" in [tags] {
    mutate {
      remove_field => ["headers"]
      remove_tag   => ["input-http-elasticsearch"]
    }
    ruby {
      code => "if event.get('message').respond_to?('join') then event.set('message', event.get('message') * %(\n)) end"
    }
  }
}