Facter module for gathering system bus facts

Author: Gerard Hickey

hanlon_microkernel/facter/hnl_mk_bus.rb

@@ -0,0 +1,48 @@
+# Gathers hardware-related facts from the underlying system (used by the
+# hnl_mk_registration_manager to gather these sorts of facts in order to
+# supplement the facts gathered using Facter during the node registration
+# process)
+#
+#
+
+# add the '/usr/local/lib/ruby' directory to the LOAD_PATH
+# (this is where the hanlon_microkernel module files are placed by
+# our Dockerfile)
+$LOAD_PATH.unshift('/usr/local/lib/ruby')
+
+require 'facter'
+
+
+
+virtual_type = Facter.value('virtual')
+lshw_cmd =  (virtual_type && virtual_type == 'kvm') ? 'lshw -disable dmi' : 'lshw'
+lshw_c_bus_str = %x[sudo #{lshw_cmd} -c bus 2> /dev/null]
+
+# build the results into a Hash
+results = {}
+lshw_c_bus_str.split(/\s\s\*-/).each do |definition|
+  unless definition.empty?
+    lines = definition.split(/\n/)
+    item = lines.shift.tr(':', '')
+    attribs = Hash[ lines.collect { |l| l =~ /^\s*([^:]+):\s+(.*)\s*$/; [$1, $2] } ]
+    results[item] = attribs
+  end
+end
+
+
+# report out the core values
+%w{description product vendor version serial physical_id}.each do |fact|
+  Facter.add("mk_hw_bus_#{fact}") do
+    setcode { results['core'][fact] }
+  end
+end
+
+# now report the rest of the bus information
+results.delete('core')
+results.keys.each do |bus|
+  results[bus].each do |attrib, val|
+    Facter.add("mk_hw_bus_#{bus}_#{attrib}") do
+      setcode { val }
+    end
+  end
+end