VirtualizationInfo plugin cleanup

This is an early plugin that hasn't received any work since it's creation.  I seriously doubt anyone is using it, but this provides some minor cleanup

1) remove the hpricot dependency and all the commented out hpricot code. This plugin would fail unless it was installed, but it's not actually used
2) Stop storing XML data on the node. This is a horrible horrible thing to do. We're storing the exact same data in JSON. Why 2 formats?
3) Change the debug message to make it clean what plugin fails if the gems aren't there
4) Add a comment telling anyone reading this what gem to use.  The libvirt gem is deprecated and fails to load.

It's a bummer we need this gem to use this because the data is actually pretty useful once it's loaded, but I doubt anyone installs the gem.

1 files changed, 5 insertions, 12 deletions

diff --git a/lib/ohai/plugins/virtualization.rb b/lib/ohai/plugins/virtualization.rb
index a07f336e..b3062cc4 100644
--- a/lib/ohai/plugins/virtualization.rb
+++ b/lib/ohai/plugins/virtualization.rb
@@ -16,6 +16,9 @@
 # limitations under the License.
 #
 
+# Note: despite the name this is really a libvirt plugin.
+#       perhaps we'd be better off renaming it? -tsmith
+
 Ohai.plugin(:VirtualizationInfo) do
   %w{ uri capabilities nodeinfo domains networks storage }.each do |info|
     provides "virtualization/#{info}"
@@ -24,8 +27,7 @@ Ohai.plugin(:VirtualizationInfo) do
   collect_data do
     unless virtualization.nil? || !(virtualization[:role].eql?("host"))
       begin
-        require "libvirt"
-        require "hpricot"
+        require "libvirt" # this is the ruby-libvirt gem not the libvirt gem
 
         emu = (virtualization[:system].eql?("kvm") ? "qemu" : virtualization[:system])
         virtualization[:libvirt_version] = Libvirt.version(emu)[0].to_s
@@ -34,8 +36,6 @@ Ohai.plugin(:VirtualizationInfo) do
 
         virtualization[:uri] = virtconn.uri
         virtualization[:capabilities] = Mash.new
-        virtualization[:capabilities][:xml_desc] = (virtconn.capabilities.split("\n").collect { |line| line.strip }).join
-        #xdoc = Hpricot virtualization[:capabilities][:xml_desc]
 
         virtualization[:nodeinfo] = Mash.new
         ni = virtconn.node_get_info
@@ -46,10 +46,8 @@ Ohai.plugin(:VirtualizationInfo) do
           dv = virtconn.lookup_domain_by_id d
           virtualization[:domains][dv.name] = Mash.new
           virtualization[:domains][dv.name][:id] = d
-          virtualization[:domains][dv.name][:xml_desc] = (dv.xml_desc.split("\n").collect { |line| line.strip }).join
           %w{os_type uuid}.each { |a| virtualization[:domains][dv.name][a] = dv.send(a) }
           %w{cpu_time max_mem memory nr_virt_cpu state}.each { |a| virtualization[:domains][dv.name][a] = dv.info.send(a) }
-          #xdoc = Hpricot virtualization[:domains][dv.name][:xml_desc]
 
         end
 
@@ -57,20 +55,15 @@ Ohai.plugin(:VirtualizationInfo) do
         virtconn.list_networks.each do |n|
           nv = virtconn.lookup_network_by_name n
           virtualization[:networks][n] = Mash.new
-          virtualization[:networks][n][:xml_desc] = (nv.xml_desc.split("\n").collect { |line| line.strip }).join
           %w{bridge_name uuid}.each { |a| virtualization[:networks][n][a] = nv.send(a) }
-          #xdoc = Hpricot virtualization[:networks][n][:xml_desc]
-
         end
 
         virtualization[:storage] = Mash.new
         virtconn.list_storage_pools.each do |pool|
           sp = virtconn.lookup_storage_pool_by_name pool
           virtualization[:storage][pool] = Mash.new
-          virtualization[:storage][pool][:xml_desc] = (sp.xml_desc.split("\n").collect { |line| line.strip }).join
           %w{autostart uuid}.each { |a| virtualization[:storage][pool][a] = sp.send(a) }
           %w{allocation available capacity state}.each { |a| virtualization[:storage][pool][a] = sp.info.send(a) }
-          #xdoc = Hpricot virtualization[:storage][pool][:xml_desc]
 
           virtualization[:storage][pool][:volumes] = Mash.new
           sp.list_volumes.each do |v|
@@ -83,7 +76,7 @@ Ohai.plugin(:VirtualizationInfo) do
 
         virtconn.close
       rescue LoadError => e
-        Ohai::Log.debug("Can't load gem: #{e}.  virtualization plugin is disabled.")
+        Ohai::Log.debug("Can't load gem: #{e}. VirtualizationInfo plugin cannot continue.")
       end
     end
   end