[libvirt] added display attributes and allowed to change display of a running server

lib/fog/libvirt/compute.rb

@@ -44,6 +44,7 @@ module Fog
       request :list_interfaces
       request :destroy_interface
       request :get_node_info
+      request :update_display
 
       module Shared
         include Fog::Compute::LibvirtUtil

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

@@ -24,11 +24,11 @@ module Fog
         attribute :domain_type
         attribute :uuid
         attribute :autostart
-        attribute :vnc_port
         attribute :nics
         attribute :volumes
         attribute :active
         attribute :boot_order
+        attribute :display
 
         attribute :state
 
@@ -223,6 +223,11 @@ module Fog
           Fog::SSH.new(public_ip_address, username, credentials).run(commands)
         end
 
+        def update_display attrs = {}
+          connection.update_display attrs.merge(:uuid => uuid)
+          reload
+        end
+
         private
         attr_accessor :volumes_path
 
@@ -385,7 +390,8 @@ module Fog
             :network_interface_type => "network",
             :network_nat_network    => "default",
             :network_bridge_name    => "br0",
-            :boot_order             => default_boot_order
+            :boot_order             => default_boot_order,
+            :display                => default_display
           }
         end
 
@@ -401,6 +407,10 @@ module Fog
           end
         end
 
+        def default_display
+          {:port => '-1', :listen => '127.0.0.1', :type => 'vnc', :password => '' }
+        end
+
       end
 
     end

lib/fog/libvirt/models/compute/templates/server.xml.erb

@@ -44,7 +44,7 @@
       <target port='0'/>
     </console>
     <input type='mouse' bus='ps2'/>
-    <graphics type='vnc' port='-1' autoport='yes'/>
+     <graphics type='<%= display[:type] %>' port='<%= display[:port] %>' autoport='yes' listen='<%= display[:listen] %>' passwd='<%=display[:password] %>'/>
     <video>
       <model type='cirrus' vram='9216' heads='1'/>
     </video>

lib/fog/libvirt/requests/compute/list_domains.rb

@@ -20,11 +20,12 @@ module Fog
       module Shared
         private
 
-        def vnc_port xml
-          xml_element(xml, "domain/devices/graphics[@type='vnc']", "port")
-        rescue => e
-          # we might be using SPICE display, or no VNC display at all
-          nil
+        def domain_display xml
+          attrs = {}
+          [:type, :port, :password, :listen].each do |element|
+            attrs[element] = xml_element(xml, "domain/devices/graphics",element.to_s) rescue nil
+          end
+          attrs.reject{|k,v| v.nil? or v == ""}
         end
 
         def domain_volumes xml
@@ -61,7 +62,7 @@ module Fog
             :autostart       => dom.autostart?,
             :os_type         => dom.os_type,
             :active          => dom.active?,
-            :vnc_port        => vnc_port(dom.xml_desc),
+            :display         => domain_display(dom.xml_desc),
             :boot_order      => boot_order(dom.xml_desc),
             :nics            => domain_interfaces(dom.xml_desc),
             :volumes_path    => domain_volumes(dom.xml_desc),

lib/fog/libvirt/requests/compute/update_display.rb

@@ -0,0 +1,31 @@
+module Fog
+  module Compute
+    class Libvirt
+      class Real
+        def update_display(options = { })
+          raise ArgumentError, "uuid is a required parameter" unless options.has_key? :uuid
+          display          = { }
+          display[:type]   = options[:type] || 'vnc'
+          display[:port]   = (options[:port] || -1).to_s
+          display[:listen] = options[:listen].to_s   if options[:listen]
+          display[:passwd] = options[:password].to_s if options[:password]
+          display[:autoport] = 'yes' if display[:port] == '-1'
+
+          builder = Nokogiri::XML::Builder.new { graphics_ (display) }
+          xml     = Nokogiri::XML(builder.to_xml).root.to_s
+
+          client.lookup_domain_by_uuid(options[:uuid]).update_device(xml, 0)
+          # if we got no exceptions, then we're good'
+          true
+        end
+      end
+
+      class Mock
+        def update_display(options = { })
+          raise ArgumentError, "uuid is a required parameter" unless options.has_key? :uuid
+          true
+        end
+      end
+    end
+  end
+end

tests/libvirt/models/compute/server_tests.rb

@@ -34,7 +34,7 @@ Shindo.tests('Fog::Compute[:libvirt] | server model', ['libvirt']) do
         :domain_type,
         :uuid,
         :autostart,
-        :vnc_port,
+        :display,
         :nics,
         :volumes,
         :active,

tests/libvirt/requests/compute/update_display.rb

@@ -0,0 +1,13 @@
+Shindo.tests('Fog::Compute[:libvirt] | update_display request', ['libvirt']) do
+
+  compute = Fog::Compute[:libvirt]
+
+  reconfig_target = 'f74d728a-5b62-7e2f-1f84-239aead298ca'
+  display_spec = {:password => 'ssaaa'}
+
+  tests('The response should') do
+    response = compute.update_display(:uuid => reconfig_target).merge(display_spec)
+    test('should be true').succeeds { response }
+  end
+
+end