- Added concept of nodes (host of domains = node)

- Renamed the shuttingdown to shutting-down mode
- fixed the Gem warning on using Gem.find_by_name instead of
  Gem::Specification

lib/fog/bin/libvirt.rb

@@ -24,7 +24,14 @@ module Libvirt # deviates from other bin stuff to accomodate gem
     end
 
     def available?
-      availability = !Gem.source_index.find_name('ruby-libvirt').empty?
+      begin
+        availability=true unless Gem::Specification::find_by_name("ruby-libvirt").nil?
+      rescue Gem::LoadError
+        availability=false
+      rescue
+        availability_gem=Gem.available?("ruby-libvirt")
+      end 
+      
       if availability
         for service in services
           for collection in self.class_for(service).collections

lib/fog/compute/libvirt.rb

@@ -17,6 +17,8 @@ module Fog
       collection  :volumes
       model       :pool
       collection  :pools
+      model       :node
+      collection  :nodes
 
       class Mock
 

lib/fog/compute/models/libvirt/node.rb

@@ -0,0 +1,45 @@
+require 'fog/core/model'
+
+module Fog
+  module Compute
+    class Libvirt
+
+      class Node < Fog::Model
+
+        identity :uri
+
+        attribute :model
+        attribute :memory
+        attribute :cpus
+        attribute :mhz
+        attribute :nodes
+        attribute :sockets
+        attribute :cores
+        attribute :threads
+        
+        attribute :type
+        attribute :version
+        attribute :uri
+        attribute :node_free_memory
+        attribute :max_vcpus
+
+        private
+
+        def raw
+          @raw
+        end
+
+        def raw=(new_raw)
+          @raw = new_raw
+
+          raw_attributes = new_raw
+
+          merge_attributes(raw_attributes)
+        end
+
+      end
+
+    end
+  end
+
+end

lib/fog/compute/models/libvirt/nodes.rb

@@ -0,0 +1,40 @@
+require 'fog/core/collection'
+require 'fog/compute/models/libvirt/node'
+
+module Fog
+  module Compute
+    class Libvirt
+
+      class Nodes < Fog::Collection
+
+        model Fog::Compute::Libvirt::Node
+
+        def all(filter=nil)
+          data=[]
+          node_info=Hash.new
+          [:model, :memory, :cpus, :mhz, :nodes, :sockets, :cores, :threads].each do |param|
+            begin
+              node_info[param]=connection.node_get_info.send(param)
+            rescue ::Libvirt::RetrieveError
+              node_info[param]=nil
+            end
+          end
+          [:type, :version, :node_free_memory, :max_vcpus].each do |param|
+            begin
+              node_info[param] = connection.send(param)
+            rescue ::Libvirt::RetrieveError
+              node_info[param]=nil
+            end
+          end
+          node_info[:uri]=connection.connection.uri
+          data << { :raw => node_info }
+          require 'pp'
+          pp node_info
+          load(data)
+        end
+
+
+      end #class
+    end #Class
+  end #module
+end #Module

lib/fog/compute/models/libvirt/server.rb

@@ -255,7 +255,7 @@ module Fog
                 when 0 then "nostate"
                 when 1 then "running"
                 when 2 then "paused"
-                when 3 then "shuttingdown"
+                when 3 then "shutting-down"
                 when 4 then "shutoff"
                 when 5 then "crashed"
                 end