Ruby exception occurred: undefined method `localtime'

Elastic Stack Logstash
1

hi all,

I am using logstash 2.1.3 ,I want to show the @timestamp field in my timezone, like "@timestamp" => "2015-03-09T04:24:29.718+08:00", I try to using ruby conversion in filter.

 filter {
    ruby {
           code => "event['@timestamp'] = event['@timestamp'].localtime('+08:00')"
    }
}

but i got the error msg as below,

Ruby exception occurred: undefined method `localtime' for "2016-04-29T00:40:51.926Z":LogStash::Timestamp {:level=>:error}

Any help is welcome to resolve this.

2

The @timestamp field is supposed to be UTC. To reduce future pain don't fight the system.