Custom fact to list all profiles

profiles.rb

Facter.add(:profiles) do
  setcode do
    require 'puppet'

    # Use the [agent] context because some agents have
    # classfile overridden in puppet.conf
    Puppet.settings.preferred_run_mode = :agent
    classfile = Puppet['classfile']

    profiles = []

    File.readlines(classfile).select do |line|
      next unless line =~ /^profile::/
      profiles << line.strip.chomp
    end

    profiles.uniq.sort
  end
end