[xenserver|compute] Added Network/VLANs creation example

lib/fog/xenserver/examples/networks-and-vlans.rb

@@ -0,0 +1,45 @@
+require 'fog'                                                               
+
+#
+# Create the connection to the XenServer host
+#
+xenserver = Fog::Compute.new({
+  :provider           => 'XenServer',
+  :xenserver_url      => '1.2.3.4',
+  :xenserver_username => 'root',
+  :xenserver_password => 'secret',
+})
+
+# We have a bonded interface in XenServer, bond0 and
+# we want to add the VLANs there.
+# Note the VLAN ID -1, it is important since you
+# will problably have many PIFs with device == bond0
+# but we need the one without a proper VLAN ID
+#
+bondmaster_pif = xenserver.pifs.find do |pif| 
+  pif.vlan == "-1" and pif.device == "bond0"
+end
+
+# Another valid way of finding a PIF, without bonding
+# pif = xenserver.pifs.find { |pif| pif.physical and pif.device == 'eth0' }
+
+# We want to create these new VLANs
+vlans = [
+  { "name" => "VLAN 44", "vlanid" => 44},
+  { "name" => "VLAN 55", "vlanid" => 55}
+]
+
+
+vlans.each do |vlan|
+  # Do not create duplicated networks
+  if xenserver.networks.find { |n| n.name == vlan['name'] }
+    puts "Network #{vlan['name']} available, skipping"
+    next
+  end
+
+  puts "Craeting Network #{vlan['name']}, VLAN ID #{vlan['vlanid']}"
+  network = xenserver.networks.create :name => vlan['name']
+  xenserver.vlans.create :tag => vlan['vlanid'],
+                         :network => network,
+                         :pif => bondmaster_pif
+end