gistfile1.rb

require 'facter/util/ip'

Facter::Util::IP.get_interfaces.each do |interface|
  Facter.debug("Running ethtool on interface #{interface}")
  output = (Facter::Util::Resolution.exec("ethtool #{interface} 2>/dev/null"))
  attributes = {}
  output.each_line do |line|
    next if line.nil? or line == ""
    case line.strip
    when /Speed: (.*)Mb/
      attributes[:speed] = $1
    when /Duplex: (.*)/
      attributes[:duplex] = $1.downcase
    when /Port: (.*)/
      attributes[:port] = $1
    when /Auto-negotiation: (.*)/
      attributes[:auto_negotitation] = $1 == 'on'
    when /^Wake-on: (.*)/
      attributes[:wol] = $1.include?('g')
    when /Link detected: (.*)/
      attributes[:link] = $1 == 'yes'
    end
  end

  if attributes.keys.empty?
    Facter.debug("Running ethtool on #{interface} didn't give any information")
  end
  attributes.each do |fact, value|
    Facter.add("#{fact}_#{Facter::Util::IP.alphafy(interface)}") do
      confine :kernel => "Linux"
      setcode do
        value
      end
    end
  end
end