Splitting fields into new documents

[Badger]

You can do that using ruby

    json { source => "message" target => "[@metadata][json]" remove_field => [ "message" ] }
    ruby {
        code => '
            a = []
            a[0] = {}
            event.get("[@metadata][json]").each { |k, v|
                if k =~ /\w+\.\d+/
                    m = k.scan(/(\w+)\.(\d+)/)
                    a[m[0][1].to_i] ||= {}
                    a[m[0][1].to_i][m[0][0]] = v
                else
                    a[0][k] = v
                end
            }
            event.set("stuff", a)
        '
    }
    split { field => "stuff" }