From 469950c29b1b2189cc3ebd1bd10116f9b78ce4cf Mon Sep 17 00:00:00 2001
From: Adam Spiers <aspiers@suse.com>
Date: Thu, 6 Feb 2014 21:50:29 +0000
Subject: [PATCH] prevent @@subclasses from being emptied

This can happen due to Chef's stupid approach to loading library files,
which uses Kernel#load rather than #require.  Consequently a library
can get loaded twice: once by Chef::RunContext#load_libraries and once
by another library file which depends on it.

This is also the cause of the TYPE constants being redefined.
---
 libraries/pacemaker/cib_object.rb | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/libraries/pacemaker/cib_object.rb b/libraries/pacemaker/cib_object.rb
index c620cb0..cdd4732 100644
--- a/libraries/pacemaker/cib_object.rb
+++ b/libraries/pacemaker/cib_object.rb
@@ -4,7 +4,7 @@ module Pacemaker
   class CIBObject
     attr_accessor :name, :definition
 
-    @@subclasses = { }
+    @@subclasses = { } unless class_variable_defined?(:@@subclasses)
 
     class << self
       attr_reader :object_type