Synnefo

    ganeti_nics = process_ganeti_nics(nics)

    if not nics_changed(vm.nics.order_by('index'), ganeti_nics):

        log.debug("NICs for VM %s have not changed", vm)

    for nic in ganeti_nics:

        ipv4 = nic.get('ipv4', '')

        if ipv4:

            net = nic['network']

            net.reserve_address(ipv4)

        nic['dirty'] = False

        vm.nics.create(**nic)

        # Dummy save the network, because UI uses changed-since for VMs

        # and Networks in order to show the VM NICs

        net.save()

    vm.backendtime = etime

    vm.save()

def process_ganeti_nics(ganeti_nics):

    """Process NIC dict from ganeti hooks."""

    new_nics = []

    for i, new_nic in enumerate(ganeti_nics):

        nic = {

               'index': i,

               'network': net,

               'mac': mac,

               'ipv4': ipv4,

               'ipv6': ipv6,

               'firewall_profile': firewall_profile}

        new_nics.append(nic)

    return new_nics

def nics_changed(old_nics, new_nics):

    """Return True if NICs have changed in any way."""

    if len(old_nics) != len(new_nics):

        return True

    for old_nic, new_nic in zip(old_nics, new_nics):

        if not (old_nic.ipv4 == new_nic['ipv4'] and\

                old_nic.ipv6 == new_nic['ipv6'] and\

                old_nic.mac == new_nic['mac'] and\

                old_nic.firewall_profile == new_nic['firewall_profile'] and\

                old_nic.index == new_nic['index'] and\

                old_nic.network == new_nic['network']):

            return True

    return False