Puppet facter fact for last applied configuration version

For anyone else who sets the Puppet config_version paramater to return the current SVN or Git version of your configuration, here’s a fact that grabs that version (by parsing the cached YAML catalog) and sets it as a fact called “catalog_config_version”. It can then be used for sanity-checking your nodes, looking up via the Inventory Service, or you can display it in the Dashboard using my patch: Patch to Puppet Dashboard 1.2.10 to show arbitrary facts in the main node table.

#
# facter fact for last applied config version, skeleton from /var/lib/puppet/client_yaml/catalog/fqdn.yaml
#

require 'puppet'
require 'yaml'
require 'facter'

localconfig = ARGV[0] || "#{Puppet[:clientyamldir]}/catalog/#{ Facter.fqdn }.yaml"

unless File.exist?(localconfig)
  puts("Can't find #{ Facter.fqdn }.yaml")
  exit 1
end

lc = File.read(localconfig)

begin
  pup = Marshal.load(lc)
rescue TypeError
  pup = YAML.load(lc)
rescue Exception => e
  raise
end

if pup.class == Puppet::Resource::Catalog
        Facter.add("catalog_config_version") do
                setcode do
                        pup.version
                end
        end
else
        Facter.add("catalog_config_version") do
                setcode do
                        "unknown"
                end
        end
end

All of my facts are now available in a GitHub repository: https://github.com/jantman/puppet-facter-facts.

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