require 'rubygems'
        require 'open-uri'
        require 'time'

        $config = {
                "-ip" => "168.198.1.213"
		}
        $maxitem = 10
        $pollseries = []

        #---------------------
        def poll( ip )

                puts "#{ip}"
                url="http://#{ip}:9100/metrics"
                puts $url
                cpu_idle_val = {}
                open($url).read.split("\n").each {|line|
                        if line[/^node_cpu_seconds_total/] && line[/idle/]

                                tokens = line.split(" ")
                                txt = tokens[0]
                                match = txt.match(/(?<cpu>cpu=\".\")/)
                                cpu_id =  match.captures[0].gsub("\"","").split("=")[1].to_i
                                val = tokens[1].to_f
                                cpu_idle_val[cpu_id] = val

                        end
                }
                pollitem = {}
                pollitem[:time] = Time.now.to_i
                pollitem[:idle] = cpu_idle_val
                $pollseries << pollitem

                $pollseries.shift if $pollseries.count > $maxitem

        end


        #-----------------------------
        def report

                if $pollseries.count >= 2

                        n = $pollseries.count
                        last_0 = $pollseries[n-1]
                        last_1 = $pollseries[n-2]
                        irates = {}
                        last_0[:idle].keys.each { |cpu_id|