Logstash配置文件中的Ruby异常

Question

我为logstash编写了一个.conf文件，但我不熟悉ruby语法。

我收到错误 -

Ruby exception occurred: undefined local variable or method `?' for #
<LogStash::Filters::Ruby:0x2bfd7049>

有人可以指出错误吗？

这是我的代码

input {
file 
{
path=> "/Users/Work/logs/sample.log"
start_position => "beginning"
sincedb_path => "/dev/null"
}
}

filter
{
ruby {
code => "
    fieldarr=event.get('message').split(‘&’)
    for field in fieldarr
        result=field.split('=')
        event.set(result[0],result[1])
    end
    " 
    }
}

output
{
elasticsearch {
codec=>rubydebug
hosts=> ["localhost:9200"]
}
}