gistfile1.txt

	

    def find_and_route_public_block(gateway_ip)
          num_devices = @environment.non_gateway_devices.length
          prefix = CIDR.smallest_prefix(num_devices)
          public_block =
            PublicIpBlock.find_and_route_block_to_public_ip_address(gateway_ip, prefix)
          public_block.reserve_to(gateway_ip.network_device)
          public_block
        end
     
     
    then here  I will try to delete it
     
    def make_assignments(net_device_block, ex_net_zone)
            @environment = SimpleConfig::Environment.create(@owner, @gateway,
                                                            @devices, @alias_name,
                                                            ex_net_zone.zone)
            gateway_ip = net_device_block.assign_gateway_ip
            ip_blocks = SimpleConfig::IpBlocks.new(@private_cidr, environment)
            public_block = ip_blocks.find_and_route_public_block(gateway_ip)
            ActiveRecord::Base.transaction do
              private_block = ip_blocks.create_private_block
              public_block.nat_to(private_block)
              ip_blocks.allocate_ips_to_devices(public_block, private_block)
              SimpleConfig::ServiceNet.assign(@devices, @owner)
              SimpleConfig::Vlan.create(@vlan_segment_name,
                                        environment,
                                        private_block,
                                        ex_net_zone.zone)
              environment.reload
            end
          rescue => e
            remove_devices = @devices.map{ |d| d.destroy} #"destroy the network devices in the environment"
            remove_environment = @environment.network_environment.destroy #"destroy the environment"
            remove_gateway_ip = gateway_ip.hard_deallocate! #"destroy the gateway's IP"
            remove_public_ip_block = public_block.destroy #"destroy the good block"
        end