newest_dhcp_lease.py 文件源码

def get_vir_network_dhcp_lease(conn, vm_name):
    """Libvirt since 1.2.6 version provides DHCPLeases method in virNetwork.

    That's the current official way for getting DHCP leases and this
    information isn't stored anywhere else anymore.
    """
    network = conn.networkLookupByName('vagrant-private-dhcp')
    dhcp_leases = libvirt.virNetwork.DHCPLeases(network)

    vm_dhcp_leases = filter(lambda lease: lease['hostname'] == vm_name,
                            dhcp_leases)

    newest_vm_dhcp_lease = sorted(vm_dhcp_leases,
                                  key=operator.itemgetter('expirytime'),
                                  reverse=True)[0]['ipaddr']
    return newest_vm_dhcp_lease