Store fact as JSON

user.rb

begin
  require 'rubygems'
  require 'json'
rescue LoadError => e
  require File.expand_path(File.join(File.dirname(__FILE__), 'vendor'))
  Vendor.load_vendored
end

users_hash = nil 

if Facter.value(:kernel) == 'Linux' or Facter.value(:kernel) == 'SunOS'

  users_hash = Hash.new

  if File.exists?('/usr/bin/getent')
    # We work-around an issue in Facter #10278 by forcing locale settings ...
    ENV['LANG']   = 'POSIX'
    ENV['LC_ALL'] = 'POSIX'

    Facter::Util::Resolution.exec('/usr/bin/getent passwd').each_line do |line|
      # Remove bloat ...
      line.strip!

      # Turn line into a set of tokens ...
      user = line.split(':')

      user_hash = Hash.new
      user_hash['user'] = user[0]
      user_hash['uid'] = user[2]
      user_hash['gid'] = user[3]
      user_hash['comment'] = user[4]
      user_hash['home'] = user[5]
      user_hash['shell'] = user[6]

      users_hash[user[0]] = user_hash
    end
  else
    Puppet::Type.type('user').instances.each do |user|
      # Get details about the user from the corresponding instance ...
      instance = user.retrieve

      user_hash = Hash.new
      user_hash['user'] = user.name
      #user_hash['uid'] = user.uid
      #user_hash['gid'] = user.gid
      #user_hash['comment'] = user.comment
      #user_hash['home'] = user.home
      #user_hash['shell'] = user.shell

      users_hash[user.name] = user_hash
    end
  end
elsif Facter.value(:kernel) == 'AIX'
  users_hash = Hash.new
  Facter::Util::Resolution.exec('cat /etc/passwd').each_line do |line|
    # Remove bloat ...
    line.strip!

    # Turn line into a set of tokens ...
    user = line.split(':')

    user_hash = Hash.new
    user_hash['user'] = user[0]
    user_hash['uid'] = user[2]
    user_hash['gid'] = user[3]
    user_hash['comment'] = user[4]
    user_hash['home'] = user[5]
    user_hash['shell'] = user[6]

    users_hash[user[0]] = user_hash
  end
end

Facter.add('users') do
  data = nil
  begin
    data = JSON.generate( users_hash )
  rescue => e
    # JSON failed here
  end
  setcode do
    data
  end
end