Facter modlue for gathering disk facts

Author: Gerard Hickey

hanlon_microkernel/facter/hnl_mk_disk.rb

@@ -0,0 +1,33 @@
+# Gathers hardware-related facts from the underlying system pertaining
+# to the processors. Information gathered here is exposed directly as 
+# Facter facts for the purpose of node registration. 
+#
+#
+
+# add the '/usr/local/lib/ruby' directory to the LOAD_PATH
+# (this is where the hanlon_microkernel module files are placed by
+# our Dockerfile)
+$LOAD_PATH.unshift('/usr/local/lib/ruby')
+
+require 'facter'
+
+
+virtual_type = Facter.value('virtual')
+lshw_cmd =  (virtual_type && virtual_type == 'kvm') ? 'lshw -disable dmi' : 'lshw'
+lshw_c_disk_str = %x[sudo #{lshw_cmd} -c disk 2> /dev/null]
+
+# process the results from lshw -c disk
+lshw_c_disk_str.split(/\s\s\*-/).each do |definition|
+  unless definition.empty?
+    lines = definition.split(/\n/)
+    # section title is on the first line
+    disk = lines.shift.tr(':', '')
+    # Create a hash of attributes for each section (i.e. cpu)
+    attribs = Hash[ lines.collect { |l| l =~ /^\s*([^:]+):\s+(.*)\s*$/; v=$2; [$1.gsub(/\s/, '_'), v] } ]
+    attribs.each_pair do |attrib, val|
+      Facter.add("mk_hw_#{disk}_#{attrib}") do
+        setcode { val }
+      end
+    end
+  end
+end