def _get_netif_or_derivative(self, hostname, netif):
"""
Get netif or derivative names of hostname
netif can be a macaddr, but to be conservative, it will only work if
only one interface has this macaddr.
"""
interfaces = self._get_interfaces_for_device(hostname)
if netif in interfaces:
return interfaces[netif]
if is_macaddr(netif):
mac_addresses = defaultdict(list)
for i in interfaces:
mac_addresses[macaddr_to_int(
interfaces[i].mac_address)].append(interfaces[i])
int_netif_mac = macaddr_to_int(netif)
if len(mac_addresses.get(int_netif_mac, 0)) == 1:
return mac_addresses[int_netif_mac][0]
else:
for netif_deriv in self._get_all_derivatives_for_netif(netif):
for k in interfaces:
for i in self._get_all_derivatives_for_netif(k):
if i == netif_deriv:
return interfaces[k]
raise ValueError("Interface {} not found".format(netif))
def test_macaddr_to_int_is_Null(self):
assert macaddr_to_int(None) == 0
def test_macaddr_to_int(self):
assert macaddr_to_int('00:00:FF:00:00:FF') == 4278190335