Logstash JSON代码和Ruby未正确处理十进制（浮点）

我有Kafak Logstash（然后是Ruby）Elastic

卡法克输入：

{"customerid":"smit","last_name":"shah","age":10,"height":10,"weight":100,"automated_email":false, "header": { "endpoint":"/pay"}, "transaction": { "amount":100.50, "currency" : "SGD"}}

日志存储：

 json {
        source => "message"
      }

 mutate {
        convert => { "amount" => "float" }
    }
    ruby {
        # Cancel 90% of events
        path => "/usr/local/etc/logstash/main.rb"
        script_params => { "percentage" => 0.9 }
      }
    }

红宝石

这张照片是：

{"amount"=>0.1005e3, "currency"=>"SGD"}
0.1005e3

---

为什么我得不到100.5英镑？

试着使用

交易['amount']。要想知道
不，它仍然是
0.1005e3
{"amount"=>0.1005e3, "currency"=>"SGD"}
0.1005e3