compareyaml.rb

require 'puppet/face'

Puppet::Face.define(:catalog, '0.0.1') do
  action :compareyaml do
    summary "This action takes a list of node identifier names as a flat text
file, then loads a catalog in directory A and directory B exactly matching the
name.  It them compares the catalogs.  This is intended to compare catalogs
generated on older versions of a Puppet Master with catalogs generated on a
newer version of Puppet Master."

    option "--nodelist TEXTFILE"
    option "--catalogs-old DIRECTORY"
    option "--catalogs-new DIRECTORY"

    # JJM 2011-04-14 (I _think_ *args is the naive way of doing things)
    # when_invoked do |*args|

    when_invoked do |options|
      options
      # JJM 2011-04-14 There needs to be a better way to do this.  Look into
      # Puppet::Interface::ActionBuilder#option
      raise ArgumentError, "Usage: puppet catalog compareyaml node.lst dir_old/ dir_new/" unless args.length >= 3
      nodelist = args[0]
      # This will usually be the "old" master version, e.g 0.24.8
      dir_old = args[1]
      # This will usually be the "new" mater version, e.g 2.6.7
      dir_new = args[2]
      "Hi!"
    end
  end
end

output.txt

775 yaml_dev:master! % rdebug puppet -- catalog compareyaml node.lst                                       jeff ttys004
[-2, 4] in /Users/jeff/catalogs/puppet27/puppet/bin/puppet
   1  #!/usr/bin/env ruby
   2
=> 3  require 'puppet/util/command_line'
   4  Puppet::Util::CommandLine.new.execute
/Users/jeff/catalogs/puppet27/puppet/bin/puppet:3
require 'puppet/util/command_line'
(rdb:1) break /Users/jeff/catalogs/puppet27/faces/catalog_yaml/lib/puppet/face/catalog/compareyaml.rb:19
Breakpoint 1 file /Users/jeff/catalogs/puppet27/faces/catalog_yaml/lib/puppet/face/catalog/compareyaml.rb, line 19
(rdb:1) c
/Users/jeff/catalogs/puppet27/faces/catalog_yaml/lib/puppet/face/catalog/compareyaml.rb:18: warning: multiple values for
 a block parameter (2 for 1)
        from /Users/jeff/catalogs/puppet27/puppet/lib/puppet/interface/action.rb+eval:90
Breakpoint 1 at /Users/jeff/catalogs/puppet27/faces/catalog_yaml/lib/puppet/face/catalog/compareyaml.rb:19
[14, 23] in /Users/jeff/catalogs/puppet27/faces/catalog_yaml/lib/puppet/face/catalog/compareyaml.rb
   14
   15      # JJM 2011-04-14 (I _think_ *args is the naive way of doing things)
   16      # when_invoked do |*args|
   17
   18      when_invoked do |options|
=> 19        options   
   20        # JJM 2011-04-14 There needs to be a better way to do this.  Look into
   21        # Puppet::Interface::ActionBuilder#option
   22        raise ArgumentError, "Usage: puppet catalog compareyaml node.lst dir_old/ dir_new/" unless args.length >= 3
   23        nodelist = args[0]
/Users/jeff/catalogs/puppet27/faces/catalog_yaml/lib/puppet/face/catalog/compareyaml.rb:19
options
(rdb:1) options
["node.lst", {}]