fog--fog/lib/fog/vcloudng/models/compute/disk.rb

require 'fog/core/model'

module Fog
  module Compute
    class Vcloudng

      class Disk < Fog::Model
        
        
        identity  :id, :aliases => 'instance_id'
        identity  :vm_id
        
                  
        attribute :address
        attribute :description
        attribute :element_name
        attribute :instance_id
        attribute :resource_sub_type
        attribute :resource_type
        attribute :address_on_parent
        attribute :parent
        attribute :capacity
        attribute :bus_sub_type
        attribute :bus_type
        
        # TODO Virtual machine disk sizes may only be increased, not decreased.
        def capacity=(new_capacity)
          has_changed = ( capacity != new_capacity.to_i )
          not_first_set = !capacity.nil?
          attributes[:capacity] = new_capacity.to_i
          if not_first_set && has_changed
            data = Fog::Generators::Compute::Vcloudng::Disks.new(all_disks)
            num_disk = element_name.scan(/\d+/).first.to_i
            data.modify_hard_disk_size(num_disk, new_capacity)
            response = service.put_vm_disks(vm_id, data.disks)
            service.process_task(response.body)
          end
        end
        
        def all_disks
          attributes[:all_disks] # this is passed at instantiation time
        end
        
        def destroy
          num_disk = element_name.scan(/\d+/).first.to_i
          data = Fog::Generators::Compute::Vcloudng::Disks.new(all_disks)
          data.delete_hard_disk(num_disk)
          response = service.put_vm_disks(vm_id, data.disks)
          service.process_task(response.body)
        end

      end
    end
  end
end