def test_get_interface_long_post_and_prefix(self):
"""Prefix and postfix alone overcome the max character limit."""
long_prefix = "long_pre"
long_postfix = "long_pos"
much_too_long_prefix = "much_too_long_prefix"
much_too_long_postfix = "much_too_long_postfix"
self.assertEqual(
"long_preSHORT",
utils.get_interface_name(SHORT_NAME, prefix=long_prefix))
self.assertEqual(
"SHORTlong_pos",
utils.get_interface_name(SHORT_NAME, postfix=long_postfix))
self.assertRaises(ValueError,
utils.get_interface_name,
SHORT_NAME,
prefix=long_prefix,
postfix=long_postfix)
self.assertRaises(ValueError,
utils.get_interface_name,
SHORT_NAME,
prefix=much_too_long_prefix)
self.assertRaises(ValueError,
utils.get_interface_name,
SHORT_NAME,
postfix=much_too_long_postfix)
def test_get_interface_max_len(self, mock_sha1):
self.assertEqual(constants.DEVICE_NAME_MAX_LEN,
len(utils.get_interface_name(LONG_NAME1)))
self.assertEqual(10, len(utils.get_interface_name(LONG_NAME1,
max_len=10)))
self.assertEqual(12, len(utils.get_interface_name(LONG_NAME1,
prefix="pre-",
max_len=12)))
def test_get_interface_max_len(self, mock_sha1):
self.assertEqual(constants.DEVICE_NAME_MAX_LEN,
len(utils.get_interface_name(LONG_NAME1)))
self.assertEqual(10, len(utils.get_interface_name(LONG_NAME1,
max_len=10)))
self.assertEqual(12, len(utils.get_interface_name(LONG_NAME1,
prefix="pre-",
max_len=12)))
def test_get_interface_name(self, mock_sha1):
prefix = "pre-"
prefix_long = "long_prefix"
prefix_exceeds_max_dev_len = "much_too_long_prefix"
hash_used = MOCKED_HASH[0:6]
self.assertEqual("A_REALLY_" + hash_used, utils.get_interface_name(LONG_NAME1))
self.assertEqual("SHORT", utils.get_interface_name(SHORT_NAME))
self.assertEqual("pre-A_REA" + hash_used, utils.get_interface_name(LONG_NAME1, prefix=prefix))
self.assertEqual("pre-SHORT", utils.get_interface_name(SHORT_NAME, prefix=prefix))
# len(prefix) > max_device_len - len(hash_used)
self.assertRaises(ValueError, utils.get_interface_name, SHORT_NAME, prefix_long)
# len(prefix) > max_device_len
self.assertRaises(ValueError, utils.get_interface_name, SHORT_NAME, prefix=prefix_exceeds_max_dev_len)
def test_get_interface_name(self, mock_sha1):
prefix = "pre-"
postfix = ".1111"
if_default_long = utils.get_interface_name(LONG_NAME1)
if_default_short = utils.get_interface_name(SHORT_NAME)
if_prefix_long = utils.get_interface_name(LONG_NAME1, prefix=prefix)
if_prefix_short = utils.get_interface_name(SHORT_NAME, prefix=prefix)
if_postfix_long = utils.get_interface_name(LONG_NAME1, postfix=postfix)
if_postfix_short = utils.get_interface_name(SHORT_NAME,
postfix=postfix)
if_prefix_postfix_long = utils.get_interface_name(LONG_NAME1,
prefix=prefix,
postfix=postfix)
if_prefix_postfix_short = utils.get_interface_name(SHORT_NAME,
prefix=prefix,
postfix=postfix)
# Each combination is a tuple of the following values:
# the calculated name, the expected name"
combinations = [(if_default_long, "A_REALLY_mocked"),
(if_default_short, "SHORT"),
(if_prefix_long, "pre-A_REAmocked"),
(if_prefix_short, "pre-SHORT"),
(if_postfix_long, "A_REmocked.1111"),
(if_postfix_short, "SHORT.1111"),
(if_prefix_postfix_long, "pre-mocked.1111"),
(if_prefix_postfix_short, "pre-SHORT.1111")]
for if_new_name, if_expected_new_name in combinations:
self.assertEqual(if_new_name, if_expected_new_name)
def get_subinterface_name(self, physical_interface, vlan_id):
if not vlan_id:
LOG.warning(
_LW("Invalid VLAN ID, will lead to incorrect "
"subinterface name"))
vlan_postfix = '.%s' % vlan_id
# For the vlan subinterface name prefix we use:
# * the physical_interface, if len(physical_interface) +
# len(vlan_postifx) <= 15 for backward compatibility reasons
# Example: physical_interface = eth0
# prefix = eth0.1
# prefix = eth0.1111
#
# * otherwise a unique hash per physical_interface to help debugging
# Example: physical_interface = long_interface
# prefix = longHASHED.1
# prefix = longHASHED.1111
#
# Remark: For some physical_interface values, the used prefix can be
# both, the physical_interface itself or a hash, depending
# on the vlan_postfix length.
# Example: physical_interface = mix_interface
# prefix = mix_interface.1 (backward compatible)
# prefix = mix_iHASHED.1111
if (len(physical_interface) + len(vlan_postfix) >
constants.DEVICE_NAME_MAX_LEN):
physical_interface = p_utils.get_interface_name(
physical_interface,
max_len=(constants.DEVICE_NAME_MAX_LEN - MAX_VLAN_POSTFIX_LEN))
return "%s%s" % (physical_interface, vlan_postfix)
def get_subinterface_name(self, physical_interface, vlan_id):
if not vlan_id:
LOG.warning(_LW("Invalid VLAN ID, will lead to incorrect "
"subinterface name"))
vlan_postfix = '.%s' % vlan_id
# For the vlan subinterface name prefix we use:
# * the physical_interface, if len(physical_interface) +
# len(vlan_postifx) <= 15 for backward compatibility reasons
# Example: physical_interface = eth0
# prefix = eth0.1
# prefix = eth0.1111
#
# * otherwise a unique hash per physical_interface to help debugging
# Example: physical_interface = long_interface
# prefix = longHASHED.1
# prefix = longHASHED.1111
#
# Remark: For some physical_interface values, the used prefix can be
# both, the physical_interface itself or a hash, depending
# on the vlan_postfix length.
# Example: physical_interface = mix_interface
# prefix = mix_interface.1 (backward compatible)
# prefix = mix_iHASHED.1111
if (len(physical_interface) + len(vlan_postfix) >
constants.DEVICE_NAME_MAX_LEN):
physical_interface = p_utils.get_interface_name(
physical_interface, max_len=(constants.DEVICE_NAME_MAX_LEN -
MAX_VLAN_POSTFIX_LEN))
return "%s%s" % (physical_interface, vlan_postfix)
def get_vlan_device_name(src_dev, vlan):
"""Generating the vlan device name."""
# Ensure that independent of the vlan len the same name prefix is used.
src_dev = p_utils.get_interface_name(src_dev,
max_len=n_const.DEVICE_NAME_MAX_LEN -
MAX_VLAN_POSTFIX_LEN)
return "%s.%s" % (src_dev, vlan)
def get_vlan_device_name(src_dev, vlan):
"""Generating the vlan device name."""
# Ensure that independent of the vlan len the same name prefix is used.
src_dev = p_utils.get_interface_name(src_dev,
max_len=n_const.DEVICE_NAME_MAX_LEN -
MAX_VLAN_POSTFIX_LEN)
return "%s.%s" % (src_dev, vlan)
def test_get_interface_name(self, mock_sha1):
prefix = "pre-"
prefix_long = "long_prefix"
prefix_exceeds_max_dev_len = "much_too_long_prefix"
hash_used = MOCKED_HASH[0:6]
self.assertEqual("A_REALLY_" + hash_used,
utils.get_interface_name(LONG_NAME1))
self.assertEqual("SHORT",
utils.get_interface_name(SHORT_NAME))
self.assertEqual("pre-A_REA" + hash_used,
utils.get_interface_name(LONG_NAME1, prefix=prefix))
self.assertEqual("pre-SHORT",
utils.get_interface_name(SHORT_NAME, prefix=prefix))
# len(prefix) > max_device_len - len(hash_used)
self.assertRaises(ValueError, utils.get_interface_name, SHORT_NAME,
prefix_long)
# len(prefix) > max_device_len
self.assertRaises(ValueError, utils.get_interface_name, SHORT_NAME,
prefix=prefix_exceeds_max_dev_len)
def test_get_interface_uniqueness(self):
prefix = "prefix-"
if_prefix1 = utils.get_interface_name(LONG_NAME1, prefix=prefix)
if_prefix2 = utils.get_interface_name(LONG_NAME2, prefix=prefix)
self.assertNotEqual(if_prefix1, if_prefix2)
def test_get_interface_uniqueness(self):
prefix = "prefix-"
if_prefix1 = utils.get_interface_name(LONG_NAME1, prefix=prefix)
if_prefix2 = utils.get_interface_name(LONG_NAME2, prefix=prefix)
self.assertNotEqual(if_prefix1, if_prefix2)
def test_get_interface_max_len(self, mock_sha1):
self.assertTrue(len(utils.get_interface_name(LONG_NAME1)) == 15)
self.assertTrue(
len(utils.get_interface_name(LONG_NAME1, max_len=10)) == 10)