def test_provided_nic_does_not_exist(self, m_fallback_nic):
"""When the provided nic doesn't exist, log a message and no-op."""
with pytest.raises(NoDHCPLeaseInterfaceError):
maybe_perform_dhcp_discovery("idontexist")
self.assertIn(
"Skip dhcp_discovery: nic idontexist not found in get_devicelist.",
self.logs.getvalue(),
)
def test_no_fallback_nic_found(self, m_fallback_nic):
"""Log and do nothing when nic is absent and no fallback is found."""
m_fallback_nic.return_value = None # No fallback nic found
with pytest.raises(NoDHCPLeaseInterfaceError):
maybe_perform_dhcp_discovery()
self.assertIn(
"Skip dhcp_discovery: Unable to find fallback nic.",
self.logs.getvalue(),
)
def test_absent_dhclient_command(self, m_fallback, m_which):
"""When dhclient doesn't exist in the OS, log the issue and no-op."""
m_fallback.return_value = "eth9"
m_which.return_value = None # dhclient isn't found
with pytest.raises(NoDHCPLeaseMissingDhclientError):
maybe_perform_dhcp_discovery()
self.assertIn(
"Skip dhclient configuration: No dhclient command found.",
self.logs.getvalue(),
)
def test_no_fallback_nic_found(self, m_fallback_nic):
"""Log and do nothing when nic is absent and no fallback is found."""
m_fallback_nic.return_value = None # No fallback nic found
self.assertEqual([], maybe_perform_dhcp_discovery())
self.assertIn(
'Skip dhcp_discovery: Unable to find fallback nic.',
self.logs.getvalue())
def test_provided_nic_does_not_exist(self):
"""When the provided nic doesn't exist, log a message and no-op."""
self.assertEqual([], maybe_perform_dhcp_discovery("idontexist"))
self.assertIn(
"Skip dhcp_discovery: nic idontexist not found in get_devicelist.",
self.logs.getvalue(),
)
def test_no_fallback_nic_found(self, m_fallback_nic):
"""Log and do nothing when nic is absent and no fallback is found."""
m_fallback_nic.return_value = None # No fallback nic found
self.assertEqual([], maybe_perform_dhcp_discovery())
self.assertIn(
'Skip dhcp_discovery: Unable to find fallback nic.',
self.logs.getvalue())
def test_absent_dhclient_command(self, m_fallback, m_which):
"""When dhclient doesn't exist in the OS, log the issue and no-op."""
m_fallback.return_value = 'eth9'
m_which.return_value = None # dhclient isn't found
self.assertEqual([], maybe_perform_dhcp_discovery())
self.assertIn(
'Skip dhclient configuration: No dhclient command found.',
self.logs.getvalue())
def test_absent_dhclient_command(self, m_fallback, m_which):
"""When dhclient doesn't exist in the OS, log the issue and no-op."""
m_fallback.return_value = 'eth9'
m_which.return_value = None # dhclient isn't found
self.assertEqual([], maybe_perform_dhcp_discovery())
self.assertIn(
'Skip dhclient configuration: No dhclient command found.',
self.logs.getvalue())
def test_dhclient_run_with_tmpdir(self, m_fallback, m_which, m_dhcp):
"""maybe_perform_dhcp_discovery passes tmpdir to dhcp_discovery."""
m_fallback.return_value = 'eth9'
m_which.return_value = '/sbin/dhclient'
m_dhcp.return_value = {'address': '192.168.2.2'}
self.assertEqual({'address': '192.168.2.2'},
maybe_perform_dhcp_discovery())
m_dhcp.assert_called_once()
call = m_dhcp.call_args_list[0]
self.assertEqual('/sbin/dhclient', call[0][0])
self.assertEqual('eth9', call[0][1])
self.assertIn('/tmp/cloud-init-dhcp-', call[0][2])
def obtain_lease(self):
"""Perform dhcp discovery in a sandboxed environment if possible.
@return: A dict representing dhcp options on the most recent lease
obtained from the dhclient discovery if run, otherwise an error
is raised.
@raises: NoDHCPLeaseError if no leases could be obtained.
"""
if self.lease:
return self.lease
leases = maybe_perform_dhcp_discovery(self.iface, self.dhcp_log_func)
if not leases:
raise NoDHCPLeaseError()
self.lease = leases[-1]
LOG.debug(
"Received dhcp lease on %s for %s/%s",
self.lease["interface"],
self.lease["fixed-address"],
self.lease["subnet-mask"],
)
nmap = {
"interface":
"interface",
"ip":
"fixed-address",
"prefix_or_mask":
"subnet-mask",
"broadcast":
"broadcast-address",
"static_routes": [
"rfc3442-classless-static-routes",
"classless-static-routes",
],
"router":
"routers",
}
kwargs = self.extract_dhcp_options_mapping(nmap)
if not kwargs["broadcast"]:
kwargs["broadcast"] = net.mask_and_ipv4_to_bcast_addr(
kwargs["prefix_or_mask"], kwargs["ip"])
if kwargs["static_routes"]:
kwargs["static_routes"] = parse_static_routes(
kwargs["static_routes"])
if self.connectivity_url_data:
kwargs["connectivity_url_data"] = self.connectivity_url_data
ephipv4 = EphemeralIPv4Network(**kwargs)
ephipv4.__enter__()
self._ephipv4 = ephipv4
return self.lease
def _get_data(self):
seed_ret = {}
if util.read_optional_seed(seed_ret, base=(self.seed_dir + "/")):
self.userdata_raw = seed_ret['user-data']
self.metadata = seed_ret['meta-data']
LOG.debug("Using seeded ec2 data from %s", self.seed_dir)
self._cloud_platform = Platforms.SEEDED
return True
strict_mode, _sleep = read_strict_mode(
util.get_cfg_by_path(self.sys_cfg, STRICT_ID_PATH,
STRICT_ID_DEFAULT), ("warn", None))
LOG.debug("strict_mode: %s, cloud_platform=%s", strict_mode,
self.cloud_platform)
if strict_mode == "true" and self.cloud_platform == Platforms.UNKNOWN:
return False
elif self.cloud_platform == Platforms.NO_EC2_METADATA:
return False
if self.get_network_metadata: # Setup networking in init-local stage.
if util.is_FreeBSD():
LOG.debug("FreeBSD doesn't support running dhclient with -sf")
return False
dhcp_leases = dhcp.maybe_perform_dhcp_discovery(
self.fallback_interface)
if not dhcp_leases:
# DataSourceEc2Local failed in init-local stage. DataSourceEc2
# will still run in init-network stage.
return False
dhcp_opts = dhcp_leases[-1]
net_params = {
'interface': dhcp_opts.get('interface'),
'ip': dhcp_opts.get('fixed-address'),
'prefix_or_mask': dhcp_opts.get('subnet-mask'),
'broadcast': dhcp_opts.get('broadcast-address'),
'router': dhcp_opts.get('routers')
}
with net.EphemeralIPv4Network(**net_params):
return util.log_time(logfunc=LOG.debug,
msg='Crawl of metadata service',
func=self._crawl_metadata)
else:
return self._crawl_metadata()
def test_provided_nic_does_not_exist(self):
"""When the provided nic doesn't exist, log a message and no-op."""
self.assertEqual([], maybe_perform_dhcp_discovery('idontexist'))
self.assertIn(
'Skip dhcp_discovery: nic idontexist not found in get_devicelist.',
self.logs.getvalue())
