My elasticsearch query

gistfile1.txt

  client = Elasticsearch::Client.new hosts: [{host: 'localhost:9200', port: 9200}]
  

                value = client.search index: logstash_date,
            body: {
              "facets"=> {
                "0"=> {
                  "date_histogram"=> {
                    "field"=> "@timestamp",
                    "interval"=> "15m"
                  },
                  "global"=> true,
                  "facet_filter"=> {
                    "fquery"=> {
                      "query"=> {
                        "filtered"=> {
                          "query"=> {
                            "query_string"=> {
                              "query"=> "type:iis6 AND status:500"
                            }
                          },
                          "filter"=> {
                            "bool"=> {
                              "must"=> [
                                {
                                  "range"=> {
                                    "@timestamp"=> {
                                      "from"=> "#{last_time}",
                                      "to"=>  "#{current_time}"
                                    }
                                  }
                                }
                              ]
                            }
                          }
                           }
                          }
                        }
                      }
                    }
                  },
                  "size"=> 0
                }