def test_datasource_get_url_uses_defaults_on_errors(self):
"""On invalid system config values for url_params defaults are used."""
# All invalid values should be logged
sys_cfg = {
'datasource': {
'_undef': {
'max_wait': 'nope',
'timeout': 'bug',
'retries': 'nonint'
}
}
}
datasource = DataSource(sys_cfg, self.distro, self.paths)
url_params = datasource.get_url_params()
expected = (datasource.url_max_wait, datasource.url_timeout,
datasource.url_retries)
self.assertEqual(expected, url_params)
logs = self.logs.getvalue()
expected_logs = [
"Config max_wait 'nope' is not an int, using default '-1'",
"Config timeout 'bug' is not an int, using default '10'",
"Config retries 'nonint' is not an int, using default '5'",
]
for log in expected_logs:
self.assertIn(log, logs)
def test_datasource_get_url_params_is_zero_or_greater(self):
"""get_url_params ignores timeouts with a value below 0."""
# Set an override that is below 0 which gets ignored.
sys_cfg = {'datasource': {'_undef': {'timeout': '-1'}}}
datasource = DataSource(sys_cfg, self.distro, self.paths)
(_max_wait, timeout, _retries) = datasource.get_url_params()
self.assertEqual(0, timeout)
def test_datasource_get_url_params_is_zero_or_greater(self):
"""get_url_params ignores timeouts with a value below 0."""
# Set an override that is below 0 which gets ignored.
sys_cfg = {"datasource": {"_undef": {"timeout": "-1"}}}
datasource = DataSource(sys_cfg, self.distro, self.paths)
(
_max_wait,
timeout,
_retries,
_sec_between_retries,
) = datasource.get_url_params()
self.assertEqual(0, timeout)
class TestDataSource(CiTestCase):
with_logs = True
maxDiff = None
def setUp(self):
super(TestDataSource, self).setUp()
self.sys_cfg = {'datasource': {'_undef': {'key1': False}}}
self.distro = 'distrotest' # generally should be a Distro object
self.paths = Paths({})
self.datasource = DataSource(self.sys_cfg, self.distro, self.paths)
def test_datasource_init(self):
"""DataSource initializes metadata attributes, ds_cfg and ud_proc."""
self.assertEqual(self.paths, self.datasource.paths)
self.assertEqual(self.sys_cfg, self.datasource.sys_cfg)
self.assertEqual(self.distro, self.datasource.distro)
self.assertIsNone(self.datasource.userdata)
self.assertEqual({}, self.datasource.metadata)
self.assertIsNone(self.datasource.userdata_raw)
self.assertIsNone(self.datasource.vendordata)
self.assertIsNone(self.datasource.vendordata_raw)
self.assertEqual({'key1': False}, self.datasource.ds_cfg)
self.assertIsInstance(self.datasource.ud_proc, UserDataProcessor)
def test_datasource_init_gets_ds_cfg_using_dsname(self):
"""Init uses DataSource.dsname for sourcing ds_cfg."""
sys_cfg = {'datasource': {'MyTestSubclass': {'key2': False}}}
distro = 'distrotest' # generally should be a Distro object
datasource = DataSourceTestSubclassNet(sys_cfg, distro, self.paths)
self.assertEqual({'key2': False}, datasource.ds_cfg)
def test_str_is_classname(self):
"""The string representation of the datasource is the classname."""
self.assertEqual('DataSource', str(self.datasource))
self.assertEqual(
'DataSourceTestSubclassNet',
str(DataSourceTestSubclassNet('', '', self.paths)))
def test_datasource_get_url_params_defaults(self):
"""get_url_params default url config settings for the datasource."""
params = self.datasource.get_url_params()
self.assertEqual(params.max_wait_seconds, self.datasource.url_max_wait)
self.assertEqual(params.timeout_seconds, self.datasource.url_timeout)
self.assertEqual(params.num_retries, self.datasource.url_retries)
self.assertEqual(params.sec_between_retries,
self.datasource.url_sec_between_retries)
def test_datasource_get_url_params_subclassed(self):
"""Subclasses can override get_url_params defaults."""
sys_cfg = {'datasource': {'MyTestSubclass': {'key2': False}}}
distro = 'distrotest' # generally should be a Distro object
datasource = DataSourceTestSubclassNet(sys_cfg, distro, self.paths)
expected = (datasource.url_max_wait, datasource.url_timeout,
datasource.url_retries, datasource.url_sec_between_retries)
url_params = datasource.get_url_params()
self.assertNotEqual(self.datasource.get_url_params(), url_params)
self.assertEqual(expected, url_params)
def test_datasource_get_url_params_ds_config_override(self):
"""Datasource configuration options can override url param defaults."""
sys_cfg = {
'datasource': {
'MyTestSubclass': {
'max_wait': '1', 'timeout': '2',
'retries': '3', 'sec_between_retries': 4
}}}
datasource = DataSourceTestSubclassNet(
sys_cfg, self.distro, self.paths)
expected = (1, 2, 3, 4)
url_params = datasource.get_url_params()
self.assertNotEqual(
(datasource.url_max_wait, datasource.url_timeout,
datasource.url_retries, datasource.url_sec_between_retries),
url_params)
self.assertEqual(expected, url_params)
def test_datasource_get_url_params_is_zero_or_greater(self):
"""get_url_params ignores timeouts with a value below 0."""
# Set an override that is below 0 which gets ignored.
sys_cfg = {'datasource': {'_undef': {'timeout': '-1'}}}
datasource = DataSource(sys_cfg, self.distro, self.paths)
(_max_wait, timeout, _retries,
_sec_between_retries) = datasource.get_url_params()
self.assertEqual(0, timeout)
def test_datasource_get_url_uses_defaults_on_errors(self):
"""On invalid system config values for url_params defaults are used."""
# All invalid values should be logged
sys_cfg = {'datasource': {
'_undef': {
'max_wait': 'nope', 'timeout': 'bug', 'retries': 'nonint'}}}
datasource = DataSource(sys_cfg, self.distro, self.paths)
url_params = datasource.get_url_params()
expected = (datasource.url_max_wait, datasource.url_timeout,
datasource.url_retries, datasource.url_sec_between_retries)
self.assertEqual(expected, url_params)
logs = self.logs.getvalue()
expected_logs = [
"Config max_wait 'nope' is not an int, using default '-1'",
"Config timeout 'bug' is not an int, using default '10'",
"Config retries 'nonint' is not an int, using default '5'",
]
for log in expected_logs:
self.assertIn(log, logs)
@mock.patch('cloudinit.sources.net.find_fallback_nic')
def test_fallback_interface_is_discovered(self, m_get_fallback_nic):
"""The fallback_interface is discovered via find_fallback_nic."""
m_get_fallback_nic.return_value = 'nic9'
self.assertEqual('nic9', self.datasource.fallback_interface)
@mock.patch('cloudinit.sources.net.find_fallback_nic')
def test_fallback_interface_logs_undiscovered(self, m_get_fallback_nic):
"""Log a warning when fallback_interface can not discover the nic."""
self.datasource._cloud_name = 'MySupahCloud'
m_get_fallback_nic.return_value = None # Couldn't discover nic
self.assertIsNone(self.datasource.fallback_interface)
self.assertEqual(
'WARNING: Did not find a fallback interface on MySupahCloud.\n',
self.logs.getvalue())
@mock.patch('cloudinit.sources.net.find_fallback_nic')
def test_wb_fallback_interface_is_cached(self, m_get_fallback_nic):
"""The fallback_interface is cached and won't be rediscovered."""
self.datasource._fallback_interface = 'nic10'
self.assertEqual('nic10', self.datasource.fallback_interface)
m_get_fallback_nic.assert_not_called()
def test__get_data_unimplemented(self):
"""Raise an error when _get_data is not implemented."""
with self.assertRaises(NotImplementedError) as context_manager:
self.datasource.get_data()
self.assertIn(
'Subclasses of DataSource must implement _get_data',
str(context_manager.exception))
datasource2 = InvalidDataSourceTestSubclassNet(
self.sys_cfg, self.distro, self.paths)
with self.assertRaises(NotImplementedError) as context_manager:
datasource2.get_data()
self.assertIn(
'Subclasses of DataSource must implement _get_data',
str(context_manager.exception))
def test_get_data_calls_subclass__get_data(self):
"""Datasource.get_data uses the subclass' version of _get_data."""
tmp = self.tmp_dir()
datasource = DataSourceTestSubclassNet(
self.sys_cfg, self.distro, Paths({'run_dir': tmp}))
self.assertTrue(datasource.get_data())
self.assertEqual(
{'availability_zone': 'myaz',
'local-hostname': 'test-subclass-hostname',
'region': 'myregion'},
datasource.metadata)
self.assertEqual('userdata_raw', datasource.userdata_raw)
self.assertEqual('vendordata_raw', datasource.vendordata_raw)
def test_get_hostname_strips_local_hostname_without_domain(self):
"""Datasource.get_hostname strips metadata local-hostname of domain."""
tmp = self.tmp_dir()
datasource = DataSourceTestSubclassNet(
self.sys_cfg, self.distro, Paths({'run_dir': tmp}))
self.assertTrue(datasource.get_data())
self.assertEqual(
'test-subclass-hostname', datasource.metadata['local-hostname'])
self.assertEqual('test-subclass-hostname', datasource.get_hostname())
datasource.metadata['local-hostname'] = 'hostname.my.domain.com'
self.assertEqual('hostname', datasource.get_hostname())
def test_get_hostname_with_fqdn_returns_local_hostname_with_domain(self):
"""Datasource.get_hostname with fqdn set gets qualified hostname."""
tmp = self.tmp_dir()
datasource = DataSourceTestSubclassNet(
self.sys_cfg, self.distro, Paths({'run_dir': tmp}))
self.assertTrue(datasource.get_data())
datasource.metadata['local-hostname'] = 'hostname.my.domain.com'
self.assertEqual(
'hostname.my.domain.com', datasource.get_hostname(fqdn=True))
def test_get_hostname_without_metadata_uses_system_hostname(self):
"""Datasource.gethostname runs util.get_hostname when no metadata."""
tmp = self.tmp_dir()
datasource = DataSourceTestSubclassNet(
self.sys_cfg, self.distro, Paths({'run_dir': tmp}))
self.assertEqual({}, datasource.metadata)
mock_fqdn = 'cloudinit.sources.util.get_fqdn_from_hosts'
with mock.patch('cloudinit.sources.util.get_hostname') as m_gethost:
with mock.patch(mock_fqdn) as m_fqdn:
m_gethost.return_value = 'systemhostname.domain.com'
m_fqdn.return_value = None # No maching fqdn in /etc/hosts
self.assertEqual('systemhostname', datasource.get_hostname())
self.assertEqual(
'systemhostname.domain.com',
datasource.get_hostname(fqdn=True))
def test_get_hostname_without_metadata_returns_none(self):
"""Datasource.gethostname returns None when metadata_only and no MD."""
tmp = self.tmp_dir()
datasource = DataSourceTestSubclassNet(
self.sys_cfg, self.distro, Paths({'run_dir': tmp}))
self.assertEqual({}, datasource.metadata)
mock_fqdn = 'cloudinit.sources.util.get_fqdn_from_hosts'
with mock.patch('cloudinit.sources.util.get_hostname') as m_gethost:
with mock.patch(mock_fqdn) as m_fqdn:
self.assertIsNone(datasource.get_hostname(metadata_only=True))
self.assertIsNone(
datasource.get_hostname(fqdn=True, metadata_only=True))
self.assertEqual([], m_gethost.call_args_list)
self.assertEqual([], m_fqdn.call_args_list)
def test_get_hostname_without_metadata_prefers_etc_hosts(self):
"""Datasource.gethostname prefers /etc/hosts to util.get_hostname."""
tmp = self.tmp_dir()
datasource = DataSourceTestSubclassNet(
self.sys_cfg, self.distro, Paths({'run_dir': tmp}))
self.assertEqual({}, datasource.metadata)
mock_fqdn = 'cloudinit.sources.util.get_fqdn_from_hosts'
with mock.patch('cloudinit.sources.util.get_hostname') as m_gethost:
with mock.patch(mock_fqdn) as m_fqdn:
m_gethost.return_value = 'systemhostname.domain.com'
m_fqdn.return_value = 'fqdnhostname.domain.com'
self.assertEqual('fqdnhostname', datasource.get_hostname())
self.assertEqual('fqdnhostname.domain.com',
datasource.get_hostname(fqdn=True))
def test_get_data_does_not_write_instance_data_on_failure(self):
"""get_data does not write INSTANCE_JSON_FILE on get_data False."""
tmp = self.tmp_dir()
datasource = DataSourceTestSubclassNet(
self.sys_cfg, self.distro, Paths({'run_dir': tmp}),
get_data_retval=False)
self.assertFalse(datasource.get_data())
json_file = self.tmp_path(INSTANCE_JSON_FILE, tmp)
self.assertFalse(
os.path.exists(json_file), 'Found unexpected file %s' % json_file)
def test_get_data_writes_json_instance_data_on_success(self):
"""get_data writes INSTANCE_JSON_FILE to run_dir as world readable."""
tmp = self.tmp_dir()
datasource = DataSourceTestSubclassNet(
self.sys_cfg, self.distro, Paths({'run_dir': tmp}))
sys_info = {
"python": "3.7",
"platform":
"Linux-5.4.0-24-generic-x86_64-with-Ubuntu-20.04-focal",
"uname": ["Linux", "myhost", "5.4.0-24-generic", "SMP blah",
"x86_64"],
"variant": "ubuntu", "dist": ["ubuntu", "20.04", "focal"]}
with mock.patch("cloudinit.util.system_info", return_value=sys_info):
datasource.get_data()
json_file = self.tmp_path(INSTANCE_JSON_FILE, tmp)
content = util.load_file(json_file)
expected = {
'base64_encoded_keys': [],
'merged_cfg': REDACT_SENSITIVE_VALUE,
'sensitive_keys': ['merged_cfg'],
'sys_info': sys_info,
'v1': {
'_beta_keys': ['subplatform'],
'availability-zone': 'myaz',
'availability_zone': 'myaz',
'cloud-name': 'subclasscloudname',
'cloud_name': 'subclasscloudname',
'distro': 'ubuntu',
'distro_release': 'focal',
'distro_version': '20.04',
'instance-id': 'iid-datasource',
'instance_id': 'iid-datasource',
'local-hostname': 'test-subclass-hostname',
'local_hostname': 'test-subclass-hostname',
'kernel_release': '5.4.0-24-generic',
'machine': 'x86_64',
'platform': 'mytestsubclass',
'public_ssh_keys': [],
'python_version': '3.7',
'region': 'myregion',
'system_platform':
'Linux-5.4.0-24-generic-x86_64-with-Ubuntu-20.04-focal',
'subplatform': 'unknown',
'variant': 'ubuntu'},
'ds': {
'_doc': EXPERIMENTAL_TEXT,
'meta_data': {'availability_zone': 'myaz',
'local-hostname': 'test-subclass-hostname',
'region': 'myregion'}}}
self.assertEqual(expected, util.load_json(content))
file_stat = os.stat(json_file)
self.assertEqual(0o644, stat.S_IMODE(file_stat.st_mode))
self.assertEqual(expected, util.load_json(content))
def test_get_data_writes_redacted_public_json_instance_data(self):
"""get_data writes redacted content to public INSTANCE_JSON_FILE."""
tmp = self.tmp_dir()
datasource = DataSourceTestSubclassNet(
self.sys_cfg, self.distro, Paths({'run_dir': tmp}),
custom_metadata={
'availability_zone': 'myaz',
'local-hostname': 'test-subclass-hostname',
'region': 'myregion',
'some': {'security-credentials': {
'cred1': 'sekret', 'cred2': 'othersekret'}}})
self.assertCountEqual(
('merged_cfg', 'security-credentials',),
datasource.sensitive_metadata_keys)
sys_info = {
"python": "3.7",
"platform":
"Linux-5.4.0-24-generic-x86_64-with-Ubuntu-20.04-focal",
"uname": ["Linux", "myhost", "5.4.0-24-generic", "SMP blah",
"x86_64"],
"variant": "ubuntu", "dist": ["ubuntu", "20.04", "focal"]}
with mock.patch("cloudinit.util.system_info", return_value=sys_info):
datasource.get_data()
json_file = self.tmp_path(INSTANCE_JSON_FILE, tmp)
redacted = util.load_json(util.load_file(json_file))
expected = {
'base64_encoded_keys': [],
'merged_cfg': REDACT_SENSITIVE_VALUE,
'sensitive_keys': [
'ds/meta_data/some/security-credentials', 'merged_cfg'],
'sys_info': sys_info,
'v1': {
'_beta_keys': ['subplatform'],
'availability-zone': 'myaz',
'availability_zone': 'myaz',
'cloud-name': 'subclasscloudname',
'cloud_name': 'subclasscloudname',
'distro': 'ubuntu',
'distro_release': 'focal',
'distro_version': '20.04',
'instance-id': 'iid-datasource',
'instance_id': 'iid-datasource',
'local-hostname': 'test-subclass-hostname',
'local_hostname': 'test-subclass-hostname',
'kernel_release': '5.4.0-24-generic',
'machine': 'x86_64',
'platform': 'mytestsubclass',
'public_ssh_keys': [],
'python_version': '3.7',
'region': 'myregion',
'system_platform':
'Linux-5.4.0-24-generic-x86_64-with-Ubuntu-20.04-focal',
'subplatform': 'unknown',
'variant': 'ubuntu'},
'ds': {
'_doc': EXPERIMENTAL_TEXT,
'meta_data': {
'availability_zone': 'myaz',
'local-hostname': 'test-subclass-hostname',
'region': 'myregion',
'some': {'security-credentials': REDACT_SENSITIVE_VALUE}}}
}
self.assertCountEqual(expected, redacted)
file_stat = os.stat(json_file)
self.assertEqual(0o644, stat.S_IMODE(file_stat.st_mode))
def test_get_data_writes_json_instance_data_sensitive(self):
"""
get_data writes unmodified data to sensitive file as root-readonly.
"""
tmp = self.tmp_dir()
datasource = DataSourceTestSubclassNet(
self.sys_cfg, self.distro, Paths({'run_dir': tmp}),
custom_metadata={
'availability_zone': 'myaz',
'local-hostname': 'test-subclass-hostname',
'region': 'myregion',
'some': {'security-credentials': {
'cred1': 'sekret', 'cred2': 'othersekret'}}})
sys_info = {
"python": "3.7",
"platform":
"Linux-5.4.0-24-generic-x86_64-with-Ubuntu-20.04-focal",
"uname": ["Linux", "myhost", "5.4.0-24-generic", "SMP blah",
"x86_64"],
"variant": "ubuntu", "dist": ["ubuntu", "20.04", "focal"]}
self.assertCountEqual(
('merged_cfg', 'security-credentials',),
datasource.sensitive_metadata_keys)
with mock.patch("cloudinit.util.system_info", return_value=sys_info):
datasource.get_data()
sensitive_json_file = self.tmp_path(INSTANCE_JSON_SENSITIVE_FILE, tmp)
content = util.load_file(sensitive_json_file)
expected = {
'base64_encoded_keys': [],
'merged_cfg': {
'_doc': (
'Merged cloud-init system config from '
'/etc/cloud/cloud.cfg and /etc/cloud/cloud.cfg.d/'
),
'datasource': {'_undef': {'key1': False}}},
'sensitive_keys': [
'ds/meta_data/some/security-credentials', 'merged_cfg'],
'sys_info': sys_info,
'v1': {
'_beta_keys': ['subplatform'],
'availability-zone': 'myaz',
'availability_zone': 'myaz',
'cloud-name': 'subclasscloudname',
'cloud_name': 'subclasscloudname',
'distro': 'ubuntu',
'distro_release': 'focal',
'distro_version': '20.04',
'instance-id': 'iid-datasource',
'instance_id': 'iid-datasource',
'kernel_release': '5.4.0-24-generic',
'local-hostname': 'test-subclass-hostname',
'local_hostname': 'test-subclass-hostname',
'machine': 'x86_64',
'platform': 'mytestsubclass',
'public_ssh_keys': [],
'python_version': '3.7',
'region': 'myregion',
'subplatform': 'unknown',
'system_platform':
'Linux-5.4.0-24-generic-x86_64-with-Ubuntu-20.04-focal',
'variant': 'ubuntu'},
'ds': {
'_doc': EXPERIMENTAL_TEXT,
'meta_data': {
'availability_zone': 'myaz',
'local-hostname': 'test-subclass-hostname',
'region': 'myregion',
'some': {
'security-credentials':
{'cred1': 'sekret', 'cred2': 'othersekret'}}}}
}
self.assertCountEqual(expected, util.load_json(content))
file_stat = os.stat(sensitive_json_file)
self.assertEqual(0o600, stat.S_IMODE(file_stat.st_mode))
self.assertEqual(expected, util.load_json(content))
def test_get_data_handles_redacted_unserializable_content(self):
"""get_data warns unserializable content in INSTANCE_JSON_FILE."""
tmp = self.tmp_dir()
datasource = DataSourceTestSubclassNet(
self.sys_cfg, self.distro, Paths({'run_dir': tmp}),
custom_metadata={'key1': 'val1', 'key2': {'key2.1': self.paths}})
datasource.get_data()
json_file = self.tmp_path(INSTANCE_JSON_FILE, tmp)
content = util.load_file(json_file)
expected_metadata = {
'key1': 'val1',
'key2': {
'key2.1': "Warning: redacted unserializable type <class"
" 'cloudinit.helpers.Paths'>"}}
instance_json = util.load_json(content)
self.assertEqual(
expected_metadata, instance_json['ds']['meta_data'])
def test_persist_instance_data_writes_ec2_metadata_when_set(self):
"""When ec2_metadata class attribute is set, persist to json."""
tmp = self.tmp_dir()
datasource = DataSourceTestSubclassNet(
self.sys_cfg, self.distro, Paths({'run_dir': tmp}))
datasource.ec2_metadata = UNSET
datasource.get_data()
json_file = self.tmp_path(INSTANCE_JSON_FILE, tmp)
instance_data = util.load_json(util.load_file(json_file))
self.assertNotIn('ec2_metadata', instance_data['ds'])
datasource.ec2_metadata = {'ec2stuff': 'is good'}
datasource.persist_instance_data()
instance_data = util.load_json(util.load_file(json_file))
self.assertEqual(
{'ec2stuff': 'is good'},
instance_data['ds']['ec2_metadata'])
def test_persist_instance_data_writes_network_json_when_set(self):
"""When network_data.json class attribute is set, persist to json."""
tmp = self.tmp_dir()
datasource = DataSourceTestSubclassNet(
self.sys_cfg, self.distro, Paths({'run_dir': tmp}))
datasource.get_data()
json_file = self.tmp_path(INSTANCE_JSON_FILE, tmp)
instance_data = util.load_json(util.load_file(json_file))
self.assertNotIn('network_json', instance_data['ds'])
datasource.network_json = {'network_json': 'is good'}
datasource.persist_instance_data()
instance_data = util.load_json(util.load_file(json_file))
self.assertEqual(
{'network_json': 'is good'},
instance_data['ds']['network_json'])
def test_get_data_base64encodes_unserializable_bytes(self):
"""On py3, get_data base64encodes any unserializable content."""
tmp = self.tmp_dir()
datasource = DataSourceTestSubclassNet(
self.sys_cfg, self.distro, Paths({'run_dir': tmp}),
custom_metadata={'key1': 'val1', 'key2': {'key2.1': b'\x123'}})
self.assertTrue(datasource.get_data())
json_file = self.tmp_path(INSTANCE_JSON_FILE, tmp)
content = util.load_file(json_file)
instance_json = util.load_json(content)
self.assertCountEqual(
['ds/meta_data/key2/key2.1'],
instance_json['base64_encoded_keys'])
self.assertEqual(
{'key1': 'val1', 'key2': {'key2.1': 'EjM='}},
instance_json['ds']['meta_data'])
def test_get_hostname_subclass_support(self):
"""Validate get_hostname signature on all subclasses of DataSource."""
base_args = inspect.getfullargspec(DataSource.get_hostname)
# Import all DataSource subclasses so we can inspect them.
modules = util.find_modules(os.path.dirname(os.path.dirname(__file__)))
for _loc, name in modules.items():
mod_locs, _ = importer.find_module(name, ['cloudinit.sources'], [])
if mod_locs:
importer.import_module(mod_locs[0])
for child in DataSource.__subclasses__():
if 'Test' in child.dsname:
continue
self.assertEqual(
base_args,
inspect.getfullargspec(child.get_hostname),
'%s does not implement DataSource.get_hostname params'
% child)
for grandchild in child.__subclasses__():
self.assertEqual(
base_args,
inspect.getfullargspec(grandchild.get_hostname),
'%s does not implement DataSource.get_hostname params'
% grandchild)
def test_clear_cached_attrs_resets_cached_attr_class_attributes(self):
"""Class attributes listed in cached_attr_defaults are reset."""
count = 0
# Setup values for all cached class attributes
for attr, value in self.datasource.cached_attr_defaults:
setattr(self.datasource, attr, count)
count += 1
self.datasource._dirty_cache = True
self.datasource.clear_cached_attrs()
for attr, value in self.datasource.cached_attr_defaults:
self.assertEqual(value, getattr(self.datasource, attr))
def test_clear_cached_attrs_noops_on_clean_cache(self):
"""Class attributes listed in cached_attr_defaults are reset."""
count = 0
# Setup values for all cached class attributes
for attr, _ in self.datasource.cached_attr_defaults:
setattr(self.datasource, attr, count)
count += 1
self.datasource._dirty_cache = False # Fake clean cache
self.datasource.clear_cached_attrs()
count = 0
for attr, _ in self.datasource.cached_attr_defaults:
self.assertEqual(count, getattr(self.datasource, attr))
count += 1
def test_clear_cached_attrs_skips_non_attr_class_attributes(self):
"""Skip any cached_attr_defaults which aren't class attributes."""
self.datasource._dirty_cache = True
self.datasource.clear_cached_attrs()
for attr in ('ec2_metadata', 'network_json'):
self.assertFalse(hasattr(self.datasource, attr))
def test_clear_cached_attrs_of_custom_attrs(self):
"""Custom attr_values can be passed to clear_cached_attrs."""
self.datasource._dirty_cache = True
cached_attr_name = self.datasource.cached_attr_defaults[0][0]
setattr(self.datasource, cached_attr_name, 'himom')
self.datasource.myattr = 'orig'
self.datasource.clear_cached_attrs(
attr_defaults=(('myattr', 'updated'),))
self.assertEqual('himom', getattr(self.datasource, cached_attr_name))
self.assertEqual('updated', self.datasource.myattr)
@mock.patch.dict(DataSource.default_update_events, {
EventScope.NETWORK: {EventType.BOOT_NEW_INSTANCE}})
@mock.patch.dict(DataSource.supported_update_events, {
EventScope.NETWORK: {EventType.BOOT_NEW_INSTANCE}})
def test_update_metadata_only_acts_on_supported_update_events(self):
"""update_metadata_if_supported wont get_data on unsupported events."""
self.assertEqual(
{EventScope.NETWORK: set([EventType.BOOT_NEW_INSTANCE])},
self.datasource.default_update_events
)
def fake_get_data():
raise Exception('get_data should not be called')
self.datasource.get_data = fake_get_data
self.assertFalse(
self.datasource.update_metadata_if_supported(
source_event_types=[EventType.BOOT]))
@mock.patch.dict(DataSource.supported_update_events, {
EventScope.NETWORK: {EventType.BOOT_NEW_INSTANCE}})
def test_update_metadata_returns_true_on_supported_update_event(self):
"""update_metadata_if_supported returns get_data on supported events"""
def fake_get_data():
return True
self.datasource.get_data = fake_get_data
self.datasource._network_config = 'something'
self.datasource._dirty_cache = True
self.assertTrue(
self.datasource.update_metadata_if_supported(
source_event_types=[
EventType.BOOT, EventType.BOOT_NEW_INSTANCE]))
self.assertEqual(UNSET, self.datasource._network_config)
self.assertIn(
"DEBUG: Update datasource metadata and network config due to"
" events: boot-new-instance",
self.logs.getvalue()
)
class TestDataSource(CiTestCase):
with_logs = True
def setUp(self):
super(TestDataSource, self).setUp()
self.sys_cfg = {'datasource': {'_undef': {'key1': False}}}
self.distro = 'distrotest' # generally should be a Distro object
self.paths = Paths({})
self.datasource = DataSource(self.sys_cfg, self.distro, self.paths)
def test_datasource_init(self):
"""DataSource initializes metadata attributes, ds_cfg and ud_proc."""
self.assertEqual(self.paths, self.datasource.paths)
self.assertEqual(self.sys_cfg, self.datasource.sys_cfg)
self.assertEqual(self.distro, self.datasource.distro)
self.assertIsNone(self.datasource.userdata)
self.assertEqual({}, self.datasource.metadata)
self.assertIsNone(self.datasource.userdata_raw)
self.assertIsNone(self.datasource.vendordata)
self.assertIsNone(self.datasource.vendordata_raw)
self.assertEqual({'key1': False}, self.datasource.ds_cfg)
self.assertIsInstance(self.datasource.ud_proc, UserDataProcessor)
def test_datasource_init_gets_ds_cfg_using_dsname(self):
"""Init uses DataSource.dsname for sourcing ds_cfg."""
sys_cfg = {'datasource': {'MyTestSubclass': {'key2': False}}}
distro = 'distrotest' # generally should be a Distro object
datasource = DataSourceTestSubclassNet(sys_cfg, distro, self.paths)
self.assertEqual({'key2': False}, datasource.ds_cfg)
def test_str_is_classname(self):
"""The string representation of the datasource is the classname."""
self.assertEqual('DataSource', str(self.datasource))
self.assertEqual('DataSourceTestSubclassNet',
str(DataSourceTestSubclassNet('', '', self.paths)))
def test_datasource_get_url_params_defaults(self):
"""get_url_params default url config settings for the datasource."""
params = self.datasource.get_url_params()
self.assertEqual(params.max_wait_seconds, self.datasource.url_max_wait)
self.assertEqual(params.timeout_seconds, self.datasource.url_timeout)
self.assertEqual(params.num_retries, self.datasource.url_retries)
def test_datasource_get_url_params_subclassed(self):
"""Subclasses can override get_url_params defaults."""
sys_cfg = {'datasource': {'MyTestSubclass': {'key2': False}}}
distro = 'distrotest' # generally should be a Distro object
datasource = DataSourceTestSubclassNet(sys_cfg, distro, self.paths)
expected = (datasource.url_max_wait, datasource.url_timeout,
datasource.url_retries)
url_params = datasource.get_url_params()
self.assertNotEqual(self.datasource.get_url_params(), url_params)
self.assertEqual(expected, url_params)
def test_datasource_get_url_params_ds_config_override(self):
"""Datasource configuration options can override url param defaults."""
sys_cfg = {
'datasource': {
'MyTestSubclass': {
'max_wait': '1',
'timeout': '2',
'retries': '3'
}
}
}
datasource = DataSourceTestSubclassNet(sys_cfg, self.distro,
self.paths)
expected = (1, 2, 3)
url_params = datasource.get_url_params()
self.assertNotEqual((datasource.url_max_wait, datasource.url_timeout,
datasource.url_retries), url_params)
self.assertEqual(expected, url_params)
def test_datasource_get_url_params_is_zero_or_greater(self):
"""get_url_params ignores timeouts with a value below 0."""
# Set an override that is below 0 which gets ignored.
sys_cfg = {'datasource': {'_undef': {'timeout': '-1'}}}
datasource = DataSource(sys_cfg, self.distro, self.paths)
(_max_wait, timeout, _retries) = datasource.get_url_params()
self.assertEqual(0, timeout)
def test_datasource_get_url_uses_defaults_on_errors(self):
"""On invalid system config values for url_params defaults are used."""
# All invalid values should be logged
sys_cfg = {
'datasource': {
'_undef': {
'max_wait': 'nope',
'timeout': 'bug',
'retries': 'nonint'
}
}
}
datasource = DataSource(sys_cfg, self.distro, self.paths)
url_params = datasource.get_url_params()
expected = (datasource.url_max_wait, datasource.url_timeout,
datasource.url_retries)
self.assertEqual(expected, url_params)
logs = self.logs.getvalue()
expected_logs = [
"Config max_wait 'nope' is not an int, using default '-1'",
"Config timeout 'bug' is not an int, using default '10'",
"Config retries 'nonint' is not an int, using default '5'",
]
for log in expected_logs:
self.assertIn(log, logs)
@mock.patch('cloudinit.sources.net.find_fallback_nic')
def test_fallback_interface_is_discovered(self, m_get_fallback_nic):
"""The fallback_interface is discovered via find_fallback_nic."""
m_get_fallback_nic.return_value = 'nic9'
self.assertEqual('nic9', self.datasource.fallback_interface)
@mock.patch('cloudinit.sources.net.find_fallback_nic')
def test_fallback_interface_logs_undiscovered(self, m_get_fallback_nic):
"""Log a warning when fallback_interface can not discover the nic."""
self.datasource._cloud_name = 'MySupahCloud'
m_get_fallback_nic.return_value = None # Couldn't discover nic
self.assertIsNone(self.datasource.fallback_interface)
self.assertEqual(
'WARNING: Did not find a fallback interface on MySupahCloud.\n',
self.logs.getvalue())
@mock.patch('cloudinit.sources.net.find_fallback_nic')
def test_wb_fallback_interface_is_cached(self, m_get_fallback_nic):
"""The fallback_interface is cached and won't be rediscovered."""
self.datasource._fallback_interface = 'nic10'
self.assertEqual('nic10', self.datasource.fallback_interface)
m_get_fallback_nic.assert_not_called()
def test__get_data_unimplemented(self):
"""Raise an error when _get_data is not implemented."""
with self.assertRaises(NotImplementedError) as context_manager:
self.datasource.get_data()
self.assertIn('Subclasses of DataSource must implement _get_data',
str(context_manager.exception))
datasource2 = InvalidDataSourceTestSubclassNet(self.sys_cfg,
self.distro, self.paths)
with self.assertRaises(NotImplementedError) as context_manager:
datasource2.get_data()
self.assertIn('Subclasses of DataSource must implement _get_data',
str(context_manager.exception))
def test_get_data_calls_subclass__get_data(self):
"""Datasource.get_data uses the subclass' version of _get_data."""
tmp = self.tmp_dir()
datasource = DataSourceTestSubclassNet(self.sys_cfg, self.distro,
Paths({'run_dir': tmp}))
self.assertTrue(datasource.get_data())
self.assertEqual(
{
'availability_zone': 'myaz',
'local-hostname': 'test-subclass-hostname',
'region': 'myregion'
}, datasource.metadata)
self.assertEqual('userdata_raw', datasource.userdata_raw)
self.assertEqual('vendordata_raw', datasource.vendordata_raw)
def test_get_hostname_strips_local_hostname_without_domain(self):
"""Datasource.get_hostname strips metadata local-hostname of domain."""
tmp = self.tmp_dir()
datasource = DataSourceTestSubclassNet(self.sys_cfg, self.distro,
Paths({'run_dir': tmp}))
self.assertTrue(datasource.get_data())
self.assertEqual('test-subclass-hostname',
datasource.metadata['local-hostname'])
self.assertEqual('test-subclass-hostname', datasource.get_hostname())
datasource.metadata['local-hostname'] = 'hostname.my.domain.com'
self.assertEqual('hostname', datasource.get_hostname())
def test_get_hostname_with_fqdn_returns_local_hostname_with_domain(self):
"""Datasource.get_hostname with fqdn set gets qualified hostname."""
tmp = self.tmp_dir()
datasource = DataSourceTestSubclassNet(self.sys_cfg, self.distro,
Paths({'run_dir': tmp}))
self.assertTrue(datasource.get_data())
datasource.metadata['local-hostname'] = 'hostname.my.domain.com'
self.assertEqual('hostname.my.domain.com',
datasource.get_hostname(fqdn=True))
def test_get_hostname_without_metadata_uses_system_hostname(self):
"""Datasource.gethostname runs util.get_hostname when no metadata."""
tmp = self.tmp_dir()
datasource = DataSourceTestSubclassNet(self.sys_cfg, self.distro,
Paths({'run_dir': tmp}))
self.assertEqual({}, datasource.metadata)
mock_fqdn = 'cloudinit.sources.util.get_fqdn_from_hosts'
with mock.patch('cloudinit.sources.util.get_hostname') as m_gethost:
with mock.patch(mock_fqdn) as m_fqdn:
m_gethost.return_value = 'systemhostname.domain.com'
m_fqdn.return_value = None # No maching fqdn in /etc/hosts
self.assertEqual('systemhostname', datasource.get_hostname())
self.assertEqual('systemhostname.domain.com',
datasource.get_hostname(fqdn=True))
def test_get_hostname_without_metadata_returns_none(self):
"""Datasource.gethostname returns None when metadata_only and no MD."""
tmp = self.tmp_dir()
datasource = DataSourceTestSubclassNet(self.sys_cfg, self.distro,
Paths({'run_dir': tmp}))
self.assertEqual({}, datasource.metadata)
mock_fqdn = 'cloudinit.sources.util.get_fqdn_from_hosts'
with mock.patch('cloudinit.sources.util.get_hostname') as m_gethost:
with mock.patch(mock_fqdn) as m_fqdn:
self.assertIsNone(datasource.get_hostname(metadata_only=True))
self.assertIsNone(
datasource.get_hostname(fqdn=True, metadata_only=True))
self.assertEqual([], m_gethost.call_args_list)
self.assertEqual([], m_fqdn.call_args_list)
def test_get_hostname_without_metadata_prefers_etc_hosts(self):
"""Datasource.gethostname prefers /etc/hosts to util.get_hostname."""
tmp = self.tmp_dir()
datasource = DataSourceTestSubclassNet(self.sys_cfg, self.distro,
Paths({'run_dir': tmp}))
self.assertEqual({}, datasource.metadata)
mock_fqdn = 'cloudinit.sources.util.get_fqdn_from_hosts'
with mock.patch('cloudinit.sources.util.get_hostname') as m_gethost:
with mock.patch(mock_fqdn) as m_fqdn:
m_gethost.return_value = 'systemhostname.domain.com'
m_fqdn.return_value = 'fqdnhostname.domain.com'
self.assertEqual('fqdnhostname', datasource.get_hostname())
self.assertEqual('fqdnhostname.domain.com',
datasource.get_hostname(fqdn=True))
def test_get_data_write_json_instance_data(self):
"""get_data writes INSTANCE_JSON_FILE to run_dir as readonly root."""
tmp = self.tmp_dir()
datasource = DataSourceTestSubclassNet(self.sys_cfg, self.distro,
Paths({'run_dir': tmp}))
datasource.get_data()
json_file = self.tmp_path(INSTANCE_JSON_FILE, tmp)
content = util.load_file(json_file)
expected = {
'base64-encoded-keys': [],
'v1': {
'availability-zone': 'myaz',
'cloud-name': 'subclasscloudname',
'instance-id': 'iid-datasource',
'local-hostname': 'test-subclass-hostname',
'region': 'myregion'
},
'ds': {
'meta-data': {
'availability_zone': 'myaz',
'local-hostname': 'test-subclass-hostname',
'region': 'myregion'
},
'user-data': 'userdata_raw',
'vendor-data': 'vendordata_raw'
}
}
self.assertEqual(expected, util.load_json(content))
file_stat = os.stat(json_file)
self.assertEqual(0o600, stat.S_IMODE(file_stat.st_mode))
def test_get_data_handles_redacted_unserializable_content(self):
"""get_data warns unserializable content in INSTANCE_JSON_FILE."""
tmp = self.tmp_dir()
datasource = DataSourceTestSubclassNet(self.sys_cfg,
self.distro,
Paths({'run_dir': tmp}),
custom_userdata={
'key1': 'val1',
'key2': {
'key2.1': self.paths
}
})
self.assertTrue(datasource.get_data())
json_file = self.tmp_path(INSTANCE_JSON_FILE, tmp)
content = util.load_file(json_file)
expected_userdata = {
'key1': 'val1',
'key2': {
'key2.1':
"Warning: redacted unserializable type <class"
" 'cloudinit.helpers.Paths'>"
}
}
instance_json = util.load_json(content)
self.assertEqual(expected_userdata, instance_json['ds']['user-data'])
@skipIf(not six.PY3, "json serialization on <= py2.7 handles bytes")
def test_get_data_base64encodes_unserializable_bytes(self):
"""On py3, get_data base64encodes any unserializable content."""
tmp = self.tmp_dir()
datasource = DataSourceTestSubclassNet(self.sys_cfg,
self.distro,
Paths({'run_dir': tmp}),
custom_userdata={
'key1': 'val1',
'key2': {
'key2.1': b'\x123'
}
})
self.assertTrue(datasource.get_data())
json_file = self.tmp_path(INSTANCE_JSON_FILE, tmp)
content = util.load_file(json_file)
instance_json = util.load_json(content)
self.assertEqual(['ds/user-data/key2/key2.1'],
instance_json['base64-encoded-keys'])
self.assertEqual({
'key1': 'val1',
'key2': {
'key2.1': 'EjM='
}
}, instance_json['ds']['user-data'])
@skipIf(not six.PY2, "json serialization on <= py2.7 handles bytes")
def test_get_data_handles_bytes_values(self):
"""On py2 get_data handles bytes values without having to b64encode."""
tmp = self.tmp_dir()
datasource = DataSourceTestSubclassNet(self.sys_cfg,
self.distro,
Paths({'run_dir': tmp}),
custom_userdata={
'key1': 'val1',
'key2': {
'key2.1': b'\x123'
}
})
self.assertTrue(datasource.get_data())
json_file = self.tmp_path(INSTANCE_JSON_FILE, tmp)
content = util.load_file(json_file)
instance_json = util.load_json(content)
self.assertEqual([], instance_json['base64-encoded-keys'])
self.assertEqual({
'key1': 'val1',
'key2': {
'key2.1': '\x123'
}
}, instance_json['ds']['user-data'])
@skipIf(not six.PY2, "Only python2 hits UnicodeDecodeErrors on non-utf8")
def test_non_utf8_encoding_logs_warning(self):
"""When non-utf-8 values exist in py2 instance-data is not written."""
tmp = self.tmp_dir()
datasource = DataSourceTestSubclassNet(self.sys_cfg,
self.distro,
Paths({'run_dir': tmp}),
custom_userdata={
'key1': 'val1',
'key2': {
'key2.1': b'ab\xaadef'
}
})
self.assertTrue(datasource.get_data())
json_file = self.tmp_path(INSTANCE_JSON_FILE, tmp)
self.assertFalse(os.path.exists(json_file))
self.assertIn(
"WARNING: Error persisting instance-data.json: 'utf8' codec can't"
" decode byte 0xaa in position 2: invalid start byte",
self.logs.getvalue())
def test_get_hostname_subclass_support(self):
"""Validate get_hostname signature on all subclasses of DataSource."""
# Use inspect.getfullargspec when we drop py2.6 and py2.7
get_args = inspect.getargspec # pylint: disable=W1505
base_args = get_args(DataSource.get_hostname) # pylint: disable=W1505
# Import all DataSource subclasses so we can inspect them.
modules = util.find_modules(os.path.dirname(os.path.dirname(__file__)))
for _loc, name in modules.items():
mod_locs, _ = importer.find_module(name, ['cloudinit.sources'], [])
if mod_locs:
importer.import_module(mod_locs[0])
for child in DataSource.__subclasses__():
if 'Test' in child.dsname:
continue
self.assertEqual(
base_args,
get_args(child.get_hostname), # pylint: disable=W1505
'%s does not implement DataSource.get_hostname params' % child)
for grandchild in child.__subclasses__():
self.assertEqual(
base_args,
get_args(grandchild.get_hostname), # pylint: disable=W1505
'%s does not implement DataSource.get_hostname params' %
grandchild)
class TestDataSource(CiTestCase):
with_logs = True
maxDiff = None
def setUp(self):
super(TestDataSource, self).setUp()
self.sys_cfg = {"datasource": {"_undef": {"key1": False}}}
self.distro = "distrotest" # generally should be a Distro object
self.paths = Paths({})
self.datasource = DataSource(self.sys_cfg, self.distro, self.paths)
def test_datasource_init(self):
"""DataSource initializes metadata attributes, ds_cfg and ud_proc."""
self.assertEqual(self.paths, self.datasource.paths)
self.assertEqual(self.sys_cfg, self.datasource.sys_cfg)
self.assertEqual(self.distro, self.datasource.distro)
self.assertIsNone(self.datasource.userdata)
self.assertEqual({}, self.datasource.metadata)
self.assertIsNone(self.datasource.userdata_raw)
self.assertIsNone(self.datasource.vendordata)
self.assertIsNone(self.datasource.vendordata_raw)
self.assertEqual({"key1": False}, self.datasource.ds_cfg)
self.assertIsInstance(self.datasource.ud_proc, UserDataProcessor)
def test_datasource_init_gets_ds_cfg_using_dsname(self):
"""Init uses DataSource.dsname for sourcing ds_cfg."""
sys_cfg = {"datasource": {"MyTestSubclass": {"key2": False}}}
distro = "distrotest" # generally should be a Distro object
datasource = DataSourceTestSubclassNet(sys_cfg, distro, self.paths)
self.assertEqual({"key2": False}, datasource.ds_cfg)
def test_str_is_classname(self):
"""The string representation of the datasource is the classname."""
self.assertEqual("DataSource", str(self.datasource))
self.assertEqual(
"DataSourceTestSubclassNet",
str(DataSourceTestSubclassNet("", "", self.paths)),
)
def test_datasource_get_url_params_defaults(self):
"""get_url_params default url config settings for the datasource."""
params = self.datasource.get_url_params()
self.assertEqual(params.max_wait_seconds, self.datasource.url_max_wait)
self.assertEqual(params.timeout_seconds, self.datasource.url_timeout)
self.assertEqual(params.num_retries, self.datasource.url_retries)
self.assertEqual(params.sec_between_retries,
self.datasource.url_sec_between_retries)
def test_datasource_get_url_params_subclassed(self):
"""Subclasses can override get_url_params defaults."""
sys_cfg = {"datasource": {"MyTestSubclass": {"key2": False}}}
distro = "distrotest" # generally should be a Distro object
datasource = DataSourceTestSubclassNet(sys_cfg, distro, self.paths)
expected = (
datasource.url_max_wait,
datasource.url_timeout,
datasource.url_retries,
datasource.url_sec_between_retries,
)
url_params = datasource.get_url_params()
self.assertNotEqual(self.datasource.get_url_params(), url_params)
self.assertEqual(expected, url_params)
def test_datasource_get_url_params_ds_config_override(self):
"""Datasource configuration options can override url param defaults."""
sys_cfg = {
"datasource": {
"MyTestSubclass": {
"max_wait": "1",
"timeout": "2",
"retries": "3",
"sec_between_retries": 4,
}
}
}
datasource = DataSourceTestSubclassNet(sys_cfg, self.distro,
self.paths)
expected = (1, 2, 3, 4)
url_params = datasource.get_url_params()
self.assertNotEqual(
(
datasource.url_max_wait,
datasource.url_timeout,
datasource.url_retries,
datasource.url_sec_between_retries,
),
url_params,
)
self.assertEqual(expected, url_params)
def test_datasource_get_url_params_is_zero_or_greater(self):
"""get_url_params ignores timeouts with a value below 0."""
# Set an override that is below 0 which gets ignored.
sys_cfg = {"datasource": {"_undef": {"timeout": "-1"}}}
datasource = DataSource(sys_cfg, self.distro, self.paths)
(
_max_wait,
timeout,
_retries,
_sec_between_retries,
) = datasource.get_url_params()
self.assertEqual(0, timeout)
def test_datasource_get_url_uses_defaults_on_errors(self):
"""On invalid system config values for url_params defaults are used."""
# All invalid values should be logged
sys_cfg = {
"datasource": {
"_undef": {
"max_wait": "nope",
"timeout": "bug",
"retries": "nonint",
}
}
}
datasource = DataSource(sys_cfg, self.distro, self.paths)
url_params = datasource.get_url_params()
expected = (
datasource.url_max_wait,
datasource.url_timeout,
datasource.url_retries,
datasource.url_sec_between_retries,
)
self.assertEqual(expected, url_params)
logs = self.logs.getvalue()
expected_logs = [
"Config max_wait 'nope' is not an int, using default '-1'",
"Config timeout 'bug' is not an int, using default '10'",
"Config retries 'nonint' is not an int, using default '5'",
]
for log in expected_logs:
self.assertIn(log, logs)
@mock.patch("cloudinit.sources.net.find_fallback_nic")
def test_fallback_interface_is_discovered(self, m_get_fallback_nic):
"""The fallback_interface is discovered via find_fallback_nic."""
m_get_fallback_nic.return_value = "nic9"
self.assertEqual("nic9", self.datasource.fallback_interface)
@mock.patch("cloudinit.sources.net.find_fallback_nic")
def test_fallback_interface_logs_undiscovered(self, m_get_fallback_nic):
"""Log a warning when fallback_interface can not discover the nic."""
self.datasource._cloud_name = "MySupahCloud"
m_get_fallback_nic.return_value = None # Couldn't discover nic
self.assertIsNone(self.datasource.fallback_interface)
self.assertEqual(
"WARNING: Did not find a fallback interface on MySupahCloud.\n",
self.logs.getvalue(),
)
@mock.patch("cloudinit.sources.net.find_fallback_nic")
def test_wb_fallback_interface_is_cached(self, m_get_fallback_nic):
"""The fallback_interface is cached and won't be rediscovered."""
self.datasource._fallback_interface = "nic10"
self.assertEqual("nic10", self.datasource.fallback_interface)
m_get_fallback_nic.assert_not_called()
def test__get_data_unimplemented(self):
"""Raise an error when _get_data is not implemented."""
with self.assertRaises(NotImplementedError) as context_manager:
self.datasource.get_data()
self.assertIn(
"Subclasses of DataSource must implement _get_data",
str(context_manager.exception),
)
datasource2 = InvalidDataSourceTestSubclassNet(self.sys_cfg,
self.distro, self.paths)
with self.assertRaises(NotImplementedError) as context_manager:
datasource2.get_data()
self.assertIn(
"Subclasses of DataSource must implement _get_data",
str(context_manager.exception),
)
def test_get_data_calls_subclass__get_data(self):
"""Datasource.get_data uses the subclass' version of _get_data."""
tmp = self.tmp_dir()
datasource = DataSourceTestSubclassNet(self.sys_cfg, self.distro,
Paths({"run_dir": tmp}))
self.assertTrue(datasource.get_data())
self.assertEqual(
{
"availability_zone": "myaz",
"local-hostname": "test-subclass-hostname",
"region": "myregion",
},
datasource.metadata,
)
self.assertEqual("userdata_raw", datasource.userdata_raw)
self.assertEqual("vendordata_raw", datasource.vendordata_raw)
def test_get_hostname_strips_local_hostname_without_domain(self):
"""Datasource.get_hostname strips metadata local-hostname of domain."""
tmp = self.tmp_dir()
datasource = DataSourceTestSubclassNet(self.sys_cfg, self.distro,
Paths({"run_dir": tmp}))
self.assertTrue(datasource.get_data())
self.assertEqual("test-subclass-hostname",
datasource.metadata["local-hostname"])
self.assertEqual("test-subclass-hostname",
datasource.get_hostname().hostname)
datasource.metadata["local-hostname"] = "hostname.my.domain.com"
self.assertEqual("hostname", datasource.get_hostname().hostname)
def test_get_hostname_with_fqdn_returns_local_hostname_with_domain(self):
"""Datasource.get_hostname with fqdn set gets qualified hostname."""
tmp = self.tmp_dir()
datasource = DataSourceTestSubclassNet(self.sys_cfg, self.distro,
Paths({"run_dir": tmp}))
self.assertTrue(datasource.get_data())
datasource.metadata["local-hostname"] = "hostname.my.domain.com"
self.assertEqual(
"hostname.my.domain.com",
datasource.get_hostname(fqdn=True).hostname,
)
def test_get_hostname_without_metadata_uses_system_hostname(self):
"""Datasource.gethostname runs util.get_hostname when no metadata."""
tmp = self.tmp_dir()
datasource = DataSourceTestSubclassNet(self.sys_cfg, self.distro,
Paths({"run_dir": tmp}))
self.assertEqual({}, datasource.metadata)
mock_fqdn = "cloudinit.sources.util.get_fqdn_from_hosts"
with mock.patch("cloudinit.sources.util.get_hostname") as m_gethost:
with mock.patch(mock_fqdn) as m_fqdn:
m_gethost.return_value = "systemhostname.domain.com"
m_fqdn.return_value = None # No maching fqdn in /etc/hosts
self.assertEqual("systemhostname",
datasource.get_hostname().hostname)
self.assertEqual(
"systemhostname.domain.com",
datasource.get_hostname(fqdn=True).hostname,
)
def test_get_hostname_without_metadata_returns_none(self):
"""Datasource.gethostname returns None when metadata_only and no MD."""
tmp = self.tmp_dir()
datasource = DataSourceTestSubclassNet(self.sys_cfg, self.distro,
Paths({"run_dir": tmp}))
self.assertEqual({}, datasource.metadata)
mock_fqdn = "cloudinit.sources.util.get_fqdn_from_hosts"
with mock.patch("cloudinit.sources.util.get_hostname") as m_gethost:
with mock.patch(mock_fqdn) as m_fqdn:
self.assertIsNone(
datasource.get_hostname(metadata_only=True).hostname)
self.assertIsNone(
datasource.get_hostname(fqdn=True,
metadata_only=True).hostname)
self.assertEqual([], m_gethost.call_args_list)
self.assertEqual([], m_fqdn.call_args_list)
def test_get_hostname_without_metadata_prefers_etc_hosts(self):
"""Datasource.gethostname prefers /etc/hosts to util.get_hostname."""
tmp = self.tmp_dir()
datasource = DataSourceTestSubclassNet(self.sys_cfg, self.distro,
Paths({"run_dir": tmp}))
self.assertEqual({}, datasource.metadata)
mock_fqdn = "cloudinit.sources.util.get_fqdn_from_hosts"
with mock.patch("cloudinit.sources.util.get_hostname") as m_gethost:
with mock.patch(mock_fqdn) as m_fqdn:
m_gethost.return_value = "systemhostname.domain.com"
m_fqdn.return_value = "fqdnhostname.domain.com"
self.assertEqual("fqdnhostname",
datasource.get_hostname().hostname)
self.assertEqual(
"fqdnhostname.domain.com",
datasource.get_hostname(fqdn=True).hostname,
)
def test_get_data_does_not_write_instance_data_on_failure(self):
"""get_data does not write INSTANCE_JSON_FILE on get_data False."""
tmp = self.tmp_dir()
datasource = DataSourceTestSubclassNet(
self.sys_cfg,
self.distro,
Paths({"run_dir": tmp}),
get_data_retval=False,
)
self.assertFalse(datasource.get_data())
json_file = self.tmp_path(INSTANCE_JSON_FILE, tmp)
self.assertFalse(os.path.exists(json_file),
"Found unexpected file %s" % json_file)
def test_get_data_writes_json_instance_data_on_success(self):
"""get_data writes INSTANCE_JSON_FILE to run_dir as world readable."""
tmp = self.tmp_dir()
datasource = DataSourceTestSubclassNet(self.sys_cfg, self.distro,
Paths({"run_dir": tmp}))
sys_info = {
"python": "3.7",
"platform":
("Linux-5.4.0-24-generic-x86_64-with-Ubuntu-20.04-focal"),
"uname": [
"Linux",
"myhost",
"5.4.0-24-generic",
"SMP blah",
"x86_64",
],
"variant": "ubuntu",
"dist": ["ubuntu", "20.04", "focal"],
}
with mock.patch("cloudinit.util.system_info", return_value=sys_info):
with mock.patch(
"cloudinit.sources.canonical_cloud_id",
return_value="canonical_cloud_id",
):
datasource.get_data()
json_file = self.tmp_path(INSTANCE_JSON_FILE, tmp)
content = util.load_file(json_file)
expected = {
"base64_encoded_keys": [],
"merged_cfg": REDACT_SENSITIVE_VALUE,
"sensitive_keys": ["merged_cfg"],
"sys_info": sys_info,
"v1": {
"_beta_keys": ["subplatform"],
"availability-zone":
"myaz",
"availability_zone":
"myaz",
"cloud_id":
"canonical_cloud_id",
"cloud-name":
"subclasscloudname",
"cloud_name":
"subclasscloudname",
"distro":
"ubuntu",
"distro_release":
"focal",
"distro_version":
"20.04",
"instance-id":
"iid-datasource",
"instance_id":
"iid-datasource",
"local-hostname":
"test-subclass-hostname",
"local_hostname":
"test-subclass-hostname",
"kernel_release":
"5.4.0-24-generic",
"machine":
"x86_64",
"platform":
"mytestsubclass",
"public_ssh_keys": [],
"python_version":
"3.7",
"region":
"myregion",
"system_platform":
("Linux-5.4.0-24-generic-x86_64-with-Ubuntu-20.04-focal"),
"subplatform":
"unknown",
"variant":
"ubuntu",
},
"ds": {
"_doc": EXPERIMENTAL_TEXT,
"meta_data": {
"availability_zone": "myaz",
"local-hostname": "test-subclass-hostname",
"region": "myregion",
},
},
}
self.assertEqual(expected, util.load_json(content))
file_stat = os.stat(json_file)
self.assertEqual(0o644, stat.S_IMODE(file_stat.st_mode))
self.assertEqual(expected, util.load_json(content))
def test_get_data_writes_redacted_public_json_instance_data(self):
"""get_data writes redacted content to public INSTANCE_JSON_FILE."""
tmp = self.tmp_dir()
datasource = DataSourceTestSubclassNet(
self.sys_cfg,
self.distro,
Paths({"run_dir": tmp}),
custom_metadata={
"availability_zone": "myaz",
"local-hostname": "test-subclass-hostname",
"region": "myregion",
"some": {
"security-credentials": {
"cred1": "sekret",
"cred2": "othersekret",
}
},
},
)
self.assertCountEqual(
(
"merged_cfg",
"security-credentials",
),
datasource.sensitive_metadata_keys,
)
sys_info = {
"python": "3.7",
"platform":
("Linux-5.4.0-24-generic-x86_64-with-Ubuntu-20.04-focal"),
"uname": [
"Linux",
"myhost",
"5.4.0-24-generic",
"SMP blah",
"x86_64",
],
"variant": "ubuntu",
"dist": ["ubuntu", "20.04", "focal"],
}
with mock.patch("cloudinit.util.system_info", return_value=sys_info):
datasource.get_data()
json_file = self.tmp_path(INSTANCE_JSON_FILE, tmp)
redacted = util.load_json(util.load_file(json_file))
expected = {
"base64_encoded_keys": [],
"merged_cfg":
REDACT_SENSITIVE_VALUE,
"sensitive_keys": [
"ds/meta_data/some/security-credentials",
"merged_cfg",
],
"sys_info":
sys_info,
"v1": {
"_beta_keys": ["subplatform"],
"availability-zone":
"myaz",
"availability_zone":
"myaz",
"cloud-name":
"subclasscloudname",
"cloud_name":
"subclasscloudname",
"distro":
"ubuntu",
"distro_release":
"focal",
"distro_version":
"20.04",
"instance-id":
"iid-datasource",
"instance_id":
"iid-datasource",
"local-hostname":
"test-subclass-hostname",
"local_hostname":
"test-subclass-hostname",
"kernel_release":
"5.4.0-24-generic",
"machine":
"x86_64",
"platform":
"mytestsubclass",
"public_ssh_keys": [],
"python_version":
"3.7",
"region":
"myregion",
"system_platform":
("Linux-5.4.0-24-generic-x86_64-with-Ubuntu-20.04-focal"),
"subplatform":
"unknown",
"variant":
"ubuntu",
},
"ds": {
"_doc": EXPERIMENTAL_TEXT,
"meta_data": {
"availability_zone": "myaz",
"local-hostname": "test-subclass-hostname",
"region": "myregion",
"some": {
"security-credentials": REDACT_SENSITIVE_VALUE
},
},
},
}
self.assertCountEqual(expected, redacted)
file_stat = os.stat(json_file)
self.assertEqual(0o644, stat.S_IMODE(file_stat.st_mode))
def test_get_data_writes_json_instance_data_sensitive(self):
"""
get_data writes unmodified data to sensitive file as root-readonly.
"""
tmp = self.tmp_dir()
datasource = DataSourceTestSubclassNet(
self.sys_cfg,
self.distro,
Paths({"run_dir": tmp}),
custom_metadata={
"availability_zone": "myaz",
"local-hostname": "test-subclass-hostname",
"region": "myregion",
"some": {
"security-credentials": {
"cred1": "sekret",
"cred2": "othersekret",
}
},
},
)
sys_info = {
"python": "3.7",
"platform":
("Linux-5.4.0-24-generic-x86_64-with-Ubuntu-20.04-focal"),
"uname": [
"Linux",
"myhost",
"5.4.0-24-generic",
"SMP blah",
"x86_64",
],
"variant": "ubuntu",
"dist": ["ubuntu", "20.04", "focal"],
}
self.assertCountEqual(
(
"merged_cfg",
"security-credentials",
),
datasource.sensitive_metadata_keys,
)
with mock.patch("cloudinit.util.system_info", return_value=sys_info):
with mock.patch(
"cloudinit.sources.canonical_cloud_id",
return_value="canonical-cloud-id",
):
datasource.get_data()
sensitive_json_file = self.tmp_path(INSTANCE_JSON_SENSITIVE_FILE, tmp)
content = util.load_file(sensitive_json_file)
expected = {
"base64_encoded_keys": [],
"merged_cfg": {
"_doc": ("Merged cloud-init system config from "
"/etc/cloud/cloud.cfg and /etc/cloud/cloud.cfg.d/"),
"datasource": {
"_undef": {
"key1": False
}
},
},
"sensitive_keys": [
"ds/meta_data/some/security-credentials",
"merged_cfg",
],
"sys_info":
sys_info,
"v1": {
"_beta_keys": ["subplatform"],
"availability-zone":
"myaz",
"availability_zone":
"myaz",
"cloud_id":
"canonical-cloud-id",
"cloud-name":
"subclasscloudname",
"cloud_name":
"subclasscloudname",
"distro":
"ubuntu",
"distro_release":
"focal",
"distro_version":
"20.04",
"instance-id":
"iid-datasource",
"instance_id":
"iid-datasource",
"kernel_release":
"5.4.0-24-generic",
"local-hostname":
"test-subclass-hostname",
"local_hostname":
"test-subclass-hostname",
"machine":
"x86_64",
"platform":
"mytestsubclass",
"public_ssh_keys": [],
"python_version":
"3.7",
"region":
"myregion",
"subplatform":
"unknown",
"system_platform":
("Linux-5.4.0-24-generic-x86_64-with-Ubuntu-20.04-focal"),
"variant":
"ubuntu",
},
"ds": {
"_doc": EXPERIMENTAL_TEXT,
"meta_data": {
"availability_zone": "myaz",
"local-hostname": "test-subclass-hostname",
"region": "myregion",
"some": {
"security-credentials": {
"cred1": "sekret",
"cred2": "othersekret",
}
},
},
},
}
self.assertCountEqual(expected, util.load_json(content))
file_stat = os.stat(sensitive_json_file)
self.assertEqual(0o600, stat.S_IMODE(file_stat.st_mode))
self.assertEqual(expected, util.load_json(content))
def test_get_data_handles_redacted_unserializable_content(self):
"""get_data warns unserializable content in INSTANCE_JSON_FILE."""
tmp = self.tmp_dir()
datasource = DataSourceTestSubclassNet(
self.sys_cfg,
self.distro,
Paths({"run_dir": tmp}),
custom_metadata={
"key1": "val1",
"key2": {
"key2.1": self.paths
}
},
)
datasource.get_data()
json_file = self.tmp_path(INSTANCE_JSON_FILE, tmp)
content = util.load_file(json_file)
expected_metadata = {
"key1": "val1",
"key2": {
"key2.1": ("Warning: redacted unserializable type <class"
" 'cloudinit.helpers.Paths'>")
},
}
instance_json = util.load_json(content)
self.assertEqual(expected_metadata, instance_json["ds"]["meta_data"])
def test_persist_instance_data_writes_ec2_metadata_when_set(self):
"""When ec2_metadata class attribute is set, persist to json."""
tmp = self.tmp_dir()
datasource = DataSourceTestSubclassNet(self.sys_cfg, self.distro,
Paths({"run_dir": tmp}))
datasource.ec2_metadata = UNSET
datasource.get_data()
json_file = self.tmp_path(INSTANCE_JSON_FILE, tmp)
instance_data = util.load_json(util.load_file(json_file))
self.assertNotIn("ec2_metadata", instance_data["ds"])
datasource.ec2_metadata = {"ec2stuff": "is good"}
datasource.persist_instance_data()
instance_data = util.load_json(util.load_file(json_file))
self.assertEqual({"ec2stuff": "is good"},
instance_data["ds"]["ec2_metadata"])
def test_persist_instance_data_writes_canonical_cloud_id_and_symlink(self):
"""canonical-cloud-id class attribute is set, persist to json."""
tmp = self.tmp_dir()
datasource = DataSourceTestSubclassNet(self.sys_cfg, self.distro,
Paths({"run_dir": tmp}))
cloud_id_link = os.path.join(tmp, "cloud-id")
cloud_id_file = os.path.join(tmp, "cloud-id-my-cloud")
cloud_id2_file = os.path.join(tmp, "cloud-id-my-cloud2")
for filename in (cloud_id_file, cloud_id_link, cloud_id2_file):
self.assertFalse(os.path.exists(filename),
"Unexpected link found {filename}")
with mock.patch("cloudinit.sources.canonical_cloud_id",
return_value="my-cloud"):
datasource.get_data()
self.assertEqual("my-cloud\n", util.load_file(cloud_id_link))
# A symlink with the generic /run/cloud-init/cloud-id link is present
self.assertTrue(util.is_link(cloud_id_link))
# When cloud-id changes, symlink and content change
with mock.patch("cloudinit.sources.canonical_cloud_id",
return_value="my-cloud2"):
datasource.persist_instance_data()
self.assertEqual("my-cloud2\n", util.load_file(cloud_id2_file))
# Previous cloud-id-<cloud-type> file removed
self.assertFalse(os.path.exists(cloud_id_file))
# Generic link persisted which contains canonical-cloud-id as content
self.assertTrue(util.is_link(cloud_id_link))
self.assertEqual("my-cloud2\n", util.load_file(cloud_id_link))
def test_persist_instance_data_writes_network_json_when_set(self):
"""When network_data.json class attribute is set, persist to json."""
tmp = self.tmp_dir()
datasource = DataSourceTestSubclassNet(self.sys_cfg, self.distro,
Paths({"run_dir": tmp}))
datasource.get_data()
json_file = self.tmp_path(INSTANCE_JSON_FILE, tmp)
instance_data = util.load_json(util.load_file(json_file))
self.assertNotIn("network_json", instance_data["ds"])
datasource.network_json = {"network_json": "is good"}
datasource.persist_instance_data()
instance_data = util.load_json(util.load_file(json_file))
self.assertEqual({"network_json": "is good"},
instance_data["ds"]["network_json"])
def test_get_data_base64encodes_unserializable_bytes(self):
"""On py3, get_data base64encodes any unserializable content."""
tmp = self.tmp_dir()
datasource = DataSourceTestSubclassNet(
self.sys_cfg,
self.distro,
Paths({"run_dir": tmp}),
custom_metadata={
"key1": "val1",
"key2": {
"key2.1": b"\x123"
}
},
)
self.assertTrue(datasource.get_data())
json_file = self.tmp_path(INSTANCE_JSON_FILE, tmp)
content = util.load_file(json_file)
instance_json = util.load_json(content)
self.assertCountEqual(["ds/meta_data/key2/key2.1"],
instance_json["base64_encoded_keys"])
self.assertEqual(
{
"key1": "val1",
"key2": {
"key2.1": "EjM="
}
},
instance_json["ds"]["meta_data"],
)
def test_get_hostname_subclass_support(self):
"""Validate get_hostname signature on all subclasses of DataSource."""
base_args = inspect.getfullargspec(DataSource.get_hostname)
# Import all DataSource subclasses so we can inspect them.
modules = util.find_modules(os.path.dirname(os.path.dirname(__file__)))
for _loc, name in modules.items():
mod_locs, _ = importer.find_module(name, ["cloudinit.sources"], [])
if mod_locs:
importer.import_module(mod_locs[0])
for child in DataSource.__subclasses__():
if "Test" in child.dsname:
continue
self.assertEqual(
base_args,
inspect.getfullargspec(child.get_hostname),
"%s does not implement DataSource.get_hostname params" % child,
)
for grandchild in child.__subclasses__():
self.assertEqual(
base_args,
inspect.getfullargspec(grandchild.get_hostname),
"%s does not implement DataSource.get_hostname params" %
grandchild,
)
def test_clear_cached_attrs_resets_cached_attr_class_attributes(self):
"""Class attributes listed in cached_attr_defaults are reset."""
count = 0
# Setup values for all cached class attributes
for attr, value in self.datasource.cached_attr_defaults:
setattr(self.datasource, attr, count)
count += 1
self.datasource._dirty_cache = True
self.datasource.clear_cached_attrs()
for attr, value in self.datasource.cached_attr_defaults:
self.assertEqual(value, getattr(self.datasource, attr))
def test_clear_cached_attrs_noops_on_clean_cache(self):
"""Class attributes listed in cached_attr_defaults are reset."""
count = 0
# Setup values for all cached class attributes
for attr, _ in self.datasource.cached_attr_defaults:
setattr(self.datasource, attr, count)
count += 1
self.datasource._dirty_cache = False # Fake clean cache
self.datasource.clear_cached_attrs()
count = 0
for attr, _ in self.datasource.cached_attr_defaults:
self.assertEqual(count, getattr(self.datasource, attr))
count += 1
def test_clear_cached_attrs_skips_non_attr_class_attributes(self):
"""Skip any cached_attr_defaults which aren't class attributes."""
self.datasource._dirty_cache = True
self.datasource.clear_cached_attrs()
for attr in ("ec2_metadata", "network_json"):
self.assertFalse(hasattr(self.datasource, attr))
def test_clear_cached_attrs_of_custom_attrs(self):
"""Custom attr_values can be passed to clear_cached_attrs."""
self.datasource._dirty_cache = True
cached_attr_name = self.datasource.cached_attr_defaults[0][0]
setattr(self.datasource, cached_attr_name, "himom")
self.datasource.myattr = "orig"
self.datasource.clear_cached_attrs(attr_defaults=(("myattr",
"updated"), ))
self.assertEqual("himom", getattr(self.datasource, cached_attr_name))
self.assertEqual("updated", self.datasource.myattr)
@mock.patch.dict(
DataSource.default_update_events,
{EventScope.NETWORK: {EventType.BOOT_NEW_INSTANCE}},
)
@mock.patch.dict(
DataSource.supported_update_events,
{EventScope.NETWORK: {EventType.BOOT_NEW_INSTANCE}},
)
def test_update_metadata_only_acts_on_supported_update_events(self):
"""update_metadata_if_supported wont get_data on unsupported events."""
self.assertEqual(
{EventScope.NETWORK: set([EventType.BOOT_NEW_INSTANCE])},
self.datasource.default_update_events,
)
def fake_get_data():
raise Exception("get_data should not be called")
self.datasource.get_data = fake_get_data
self.assertFalse(
self.datasource.update_metadata_if_supported(
source_event_types=[EventType.BOOT]))
@mock.patch.dict(
DataSource.supported_update_events,
{EventScope.NETWORK: {EventType.BOOT_NEW_INSTANCE}},
)
def test_update_metadata_returns_true_on_supported_update_event(self):
"""update_metadata_if_supported returns get_data on supported events"""
def fake_get_data():
return True
self.datasource.get_data = fake_get_data
self.datasource._network_config = "something"
self.datasource._dirty_cache = True
self.assertTrue(
self.datasource.update_metadata_if_supported(source_event_types=[
EventType.BOOT,
EventType.BOOT_NEW_INSTANCE,
]))
self.assertEqual(UNSET, self.datasource._network_config)
self.assertIn(
"DEBUG: Update datasource metadata and network config due to"
" events: boot-new-instance",
self.logs.getvalue(),
)
class TestDataSource(CiTestCase):
with_logs = True
def setUp(self):
super(TestDataSource, self).setUp()
self.sys_cfg = {'datasource': {'_undef': {'key1': False}}}
self.distro = 'distrotest' # generally should be a Distro object
self.paths = Paths({})
self.datasource = DataSource(self.sys_cfg, self.distro, self.paths)
def test_datasource_init(self):
"""DataSource initializes metadata attributes, ds_cfg and ud_proc."""
self.assertEqual(self.paths, self.datasource.paths)
self.assertEqual(self.sys_cfg, self.datasource.sys_cfg)
self.assertEqual(self.distro, self.datasource.distro)
self.assertIsNone(self.datasource.userdata)
self.assertEqual({}, self.datasource.metadata)
self.assertIsNone(self.datasource.userdata_raw)
self.assertIsNone(self.datasource.vendordata)
self.assertIsNone(self.datasource.vendordata_raw)
self.assertEqual({'key1': False}, self.datasource.ds_cfg)
self.assertIsInstance(self.datasource.ud_proc, UserDataProcessor)
def test_datasource_init_gets_ds_cfg_using_dsname(self):
"""Init uses DataSource.dsname for sourcing ds_cfg."""
sys_cfg = {'datasource': {'MyTestSubclass': {'key2': False}}}
distro = 'distrotest' # generally should be a Distro object
datasource = DataSourceTestSubclassNet(sys_cfg, distro, self.paths)
self.assertEqual({'key2': False}, datasource.ds_cfg)
def test_str_is_classname(self):
"""The string representation of the datasource is the classname."""
self.assertEqual('DataSource', str(self.datasource))
self.assertEqual(
'DataSourceTestSubclassNet',
str(DataSourceTestSubclassNet('', '', self.paths)))
def test_datasource_get_url_params_defaults(self):
"""get_url_params default url config settings for the datasource."""
params = self.datasource.get_url_params()
self.assertEqual(params.max_wait_seconds, self.datasource.url_max_wait)
self.assertEqual(params.timeout_seconds, self.datasource.url_timeout)
self.assertEqual(params.num_retries, self.datasource.url_retries)
def test_datasource_get_url_params_subclassed(self):
"""Subclasses can override get_url_params defaults."""
sys_cfg = {'datasource': {'MyTestSubclass': {'key2': False}}}
distro = 'distrotest' # generally should be a Distro object
datasource = DataSourceTestSubclassNet(sys_cfg, distro, self.paths)
expected = (datasource.url_max_wait, datasource.url_timeout,
datasource.url_retries)
url_params = datasource.get_url_params()
self.assertNotEqual(self.datasource.get_url_params(), url_params)
self.assertEqual(expected, url_params)
def test_datasource_get_url_params_ds_config_override(self):
"""Datasource configuration options can override url param defaults."""
sys_cfg = {
'datasource': {
'MyTestSubclass': {
'max_wait': '1', 'timeout': '2', 'retries': '3'}}}
datasource = DataSourceTestSubclassNet(
sys_cfg, self.distro, self.paths)
expected = (1, 2, 3)
url_params = datasource.get_url_params()
self.assertNotEqual(
(datasource.url_max_wait, datasource.url_timeout,
datasource.url_retries),
url_params)
self.assertEqual(expected, url_params)
def test_datasource_get_url_params_is_zero_or_greater(self):
"""get_url_params ignores timeouts with a value below 0."""
# Set an override that is below 0 which gets ignored.
sys_cfg = {'datasource': {'_undef': {'timeout': '-1'}}}
datasource = DataSource(sys_cfg, self.distro, self.paths)
(_max_wait, timeout, _retries) = datasource.get_url_params()
self.assertEqual(0, timeout)
def test_datasource_get_url_uses_defaults_on_errors(self):
"""On invalid system config values for url_params defaults are used."""
# All invalid values should be logged
sys_cfg = {'datasource': {
'_undef': {
'max_wait': 'nope', 'timeout': 'bug', 'retries': 'nonint'}}}
datasource = DataSource(sys_cfg, self.distro, self.paths)
url_params = datasource.get_url_params()
expected = (datasource.url_max_wait, datasource.url_timeout,
datasource.url_retries)
self.assertEqual(expected, url_params)
logs = self.logs.getvalue()
expected_logs = [
"Config max_wait 'nope' is not an int, using default '-1'",
"Config timeout 'bug' is not an int, using default '10'",
"Config retries 'nonint' is not an int, using default '5'",
]
for log in expected_logs:
self.assertIn(log, logs)
@mock.patch('cloudinit.sources.net.find_fallback_nic')
def test_fallback_interface_is_discovered(self, m_get_fallback_nic):
"""The fallback_interface is discovered via find_fallback_nic."""
m_get_fallback_nic.return_value = 'nic9'
self.assertEqual('nic9', self.datasource.fallback_interface)
@mock.patch('cloudinit.sources.net.find_fallback_nic')
def test_fallback_interface_logs_undiscovered(self, m_get_fallback_nic):
"""Log a warning when fallback_interface can not discover the nic."""
self.datasource._cloud_name = 'MySupahCloud'
m_get_fallback_nic.return_value = None # Couldn't discover nic
self.assertIsNone(self.datasource.fallback_interface)
self.assertEqual(
'WARNING: Did not find a fallback interface on MySupahCloud.\n',
self.logs.getvalue())
@mock.patch('cloudinit.sources.net.find_fallback_nic')
def test_wb_fallback_interface_is_cached(self, m_get_fallback_nic):
"""The fallback_interface is cached and won't be rediscovered."""
self.datasource._fallback_interface = 'nic10'
self.assertEqual('nic10', self.datasource.fallback_interface)
m_get_fallback_nic.assert_not_called()
def test__get_data_unimplemented(self):
"""Raise an error when _get_data is not implemented."""
with self.assertRaises(NotImplementedError) as context_manager:
self.datasource.get_data()
self.assertIn(
'Subclasses of DataSource must implement _get_data',
str(context_manager.exception))
datasource2 = InvalidDataSourceTestSubclassNet(
self.sys_cfg, self.distro, self.paths)
with self.assertRaises(NotImplementedError) as context_manager:
datasource2.get_data()
self.assertIn(
'Subclasses of DataSource must implement _get_data',
str(context_manager.exception))
def test_get_data_calls_subclass__get_data(self):
"""Datasource.get_data uses the subclass' version of _get_data."""
tmp = self.tmp_dir()
datasource = DataSourceTestSubclassNet(
self.sys_cfg, self.distro, Paths({'run_dir': tmp}))
self.assertTrue(datasource.get_data())
self.assertEqual(
{'availability_zone': 'myaz',
'local-hostname': 'test-subclass-hostname',
'region': 'myregion'},
datasource.metadata)
self.assertEqual('userdata_raw', datasource.userdata_raw)
self.assertEqual('vendordata_raw', datasource.vendordata_raw)
def test_get_hostname_strips_local_hostname_without_domain(self):
"""Datasource.get_hostname strips metadata local-hostname of domain."""
tmp = self.tmp_dir()
datasource = DataSourceTestSubclassNet(
self.sys_cfg, self.distro, Paths({'run_dir': tmp}))
self.assertTrue(datasource.get_data())
self.assertEqual(
'test-subclass-hostname', datasource.metadata['local-hostname'])
self.assertEqual('test-subclass-hostname', datasource.get_hostname())
datasource.metadata['local-hostname'] = 'hostname.my.domain.com'
self.assertEqual('hostname', datasource.get_hostname())
def test_get_hostname_with_fqdn_returns_local_hostname_with_domain(self):
"""Datasource.get_hostname with fqdn set gets qualified hostname."""
tmp = self.tmp_dir()
datasource = DataSourceTestSubclassNet(
self.sys_cfg, self.distro, Paths({'run_dir': tmp}))
self.assertTrue(datasource.get_data())
datasource.metadata['local-hostname'] = 'hostname.my.domain.com'
self.assertEqual(
'hostname.my.domain.com', datasource.get_hostname(fqdn=True))
def test_get_hostname_without_metadata_uses_system_hostname(self):
"""Datasource.gethostname runs util.get_hostname when no metadata."""
tmp = self.tmp_dir()
datasource = DataSourceTestSubclassNet(
self.sys_cfg, self.distro, Paths({'run_dir': tmp}))
self.assertEqual({}, datasource.metadata)
mock_fqdn = 'cloudinit.sources.util.get_fqdn_from_hosts'
with mock.patch('cloudinit.sources.util.get_hostname') as m_gethost:
with mock.patch(mock_fqdn) as m_fqdn:
m_gethost.return_value = 'systemhostname.domain.com'
m_fqdn.return_value = None # No maching fqdn in /etc/hosts
self.assertEqual('systemhostname', datasource.get_hostname())
self.assertEqual(
'systemhostname.domain.com',
datasource.get_hostname(fqdn=True))
def test_get_hostname_without_metadata_returns_none(self):
"""Datasource.gethostname returns None when metadata_only and no MD."""
tmp = self.tmp_dir()
datasource = DataSourceTestSubclassNet(
self.sys_cfg, self.distro, Paths({'run_dir': tmp}))
self.assertEqual({}, datasource.metadata)
mock_fqdn = 'cloudinit.sources.util.get_fqdn_from_hosts'
with mock.patch('cloudinit.sources.util.get_hostname') as m_gethost:
with mock.patch(mock_fqdn) as m_fqdn:
self.assertIsNone(datasource.get_hostname(metadata_only=True))
self.assertIsNone(
datasource.get_hostname(fqdn=True, metadata_only=True))
self.assertEqual([], m_gethost.call_args_list)
self.assertEqual([], m_fqdn.call_args_list)
def test_get_hostname_without_metadata_prefers_etc_hosts(self):
"""Datasource.gethostname prefers /etc/hosts to util.get_hostname."""
tmp = self.tmp_dir()
datasource = DataSourceTestSubclassNet(
self.sys_cfg, self.distro, Paths({'run_dir': tmp}))
self.assertEqual({}, datasource.metadata)
mock_fqdn = 'cloudinit.sources.util.get_fqdn_from_hosts'
with mock.patch('cloudinit.sources.util.get_hostname') as m_gethost:
with mock.patch(mock_fqdn) as m_fqdn:
m_gethost.return_value = 'systemhostname.domain.com'
m_fqdn.return_value = 'fqdnhostname.domain.com'
self.assertEqual('fqdnhostname', datasource.get_hostname())
self.assertEqual('fqdnhostname.domain.com',
datasource.get_hostname(fqdn=True))
def test_get_data_does_not_write_instance_data_on_failure(self):
"""get_data does not write INSTANCE_JSON_FILE on get_data False."""
tmp = self.tmp_dir()
datasource = DataSourceTestSubclassNet(
self.sys_cfg, self.distro, Paths({'run_dir': tmp}),
get_data_retval=False)
self.assertFalse(datasource.get_data())
json_file = self.tmp_path(INSTANCE_JSON_FILE, tmp)
self.assertFalse(
os.path.exists(json_file), 'Found unexpected file %s' % json_file)
def test_get_data_writes_json_instance_data_on_success(self):
"""get_data writes INSTANCE_JSON_FILE to run_dir as world readable."""
tmp = self.tmp_dir()
datasource = DataSourceTestSubclassNet(
self.sys_cfg, self.distro, Paths({'run_dir': tmp}))
datasource.get_data()
json_file = self.tmp_path(INSTANCE_JSON_FILE, tmp)
content = util.load_file(json_file)
expected = {
'base64_encoded_keys': [],
'sensitive_keys': [],
'v1': {
'_beta_keys': ['subplatform'],
'availability-zone': 'myaz',
'availability_zone': 'myaz',
'cloud-name': 'subclasscloudname',
'cloud_name': 'subclasscloudname',
'instance-id': 'iid-datasource',
'instance_id': 'iid-datasource',
'local-hostname': 'test-subclass-hostname',
'local_hostname': 'test-subclass-hostname',
'platform': 'mytestsubclass',
'public_ssh_keys': [],
'region': 'myregion',
'subplatform': 'unknown'},
'ds': {
'_doc': EXPERIMENTAL_TEXT,
'meta_data': {'availability_zone': 'myaz',
'local-hostname': 'test-subclass-hostname',
'region': 'myregion'}}}
self.assertEqual(expected, util.load_json(content))
file_stat = os.stat(json_file)
self.assertEqual(0o644, stat.S_IMODE(file_stat.st_mode))
self.assertEqual(expected, util.load_json(content))
def test_get_data_writes_json_instance_data_sensitive(self):
"""get_data writes INSTANCE_JSON_SENSITIVE_FILE as readonly root."""
tmp = self.tmp_dir()
datasource = DataSourceTestSubclassNet(
self.sys_cfg, self.distro, Paths({'run_dir': tmp}),
custom_metadata={
'availability_zone': 'myaz',
'local-hostname': 'test-subclass-hostname',
'region': 'myregion',
'some': {'security-credentials': {
'cred1': 'sekret', 'cred2': 'othersekret'}}})
self.assertEqual(
('security-credentials',), datasource.sensitive_metadata_keys)
datasource.get_data()
json_file = self.tmp_path(INSTANCE_JSON_FILE, tmp)
sensitive_json_file = self.tmp_path(INSTANCE_JSON_SENSITIVE_FILE, tmp)
redacted = util.load_json(util.load_file(json_file))
self.assertEqual(
{'cred1': 'sekret', 'cred2': 'othersekret'},
redacted['ds']['meta_data']['some']['security-credentials'])
content = util.load_file(sensitive_json_file)
expected = {
'base64_encoded_keys': [],
'sensitive_keys': ['ds/meta_data/some/security-credentials'],
'v1': {
'_beta_keys': ['subplatform'],
'availability-zone': 'myaz',
'availability_zone': 'myaz',
'cloud-name': 'subclasscloudname',
'cloud_name': 'subclasscloudname',
'instance-id': 'iid-datasource',
'instance_id': 'iid-datasource',
'local-hostname': 'test-subclass-hostname',
'local_hostname': 'test-subclass-hostname',
'platform': 'mytestsubclass',
'public_ssh_keys': [],
'region': 'myregion',
'subplatform': 'unknown'},
'ds': {
'_doc': EXPERIMENTAL_TEXT,
'meta_data': {
'availability_zone': 'myaz',
'local-hostname': 'test-subclass-hostname',
'region': 'myregion',
'some': {'security-credentials': REDACT_SENSITIVE_VALUE}}}
}
self.maxDiff = None
self.assertEqual(expected, util.load_json(content))
file_stat = os.stat(sensitive_json_file)
self.assertEqual(0o600, stat.S_IMODE(file_stat.st_mode))
self.assertEqual(expected, util.load_json(content))
def test_get_data_handles_redacted_unserializable_content(self):
"""get_data warns unserializable content in INSTANCE_JSON_FILE."""
tmp = self.tmp_dir()
datasource = DataSourceTestSubclassNet(
self.sys_cfg, self.distro, Paths({'run_dir': tmp}),
custom_metadata={'key1': 'val1', 'key2': {'key2.1': self.paths}})
datasource.get_data()
json_file = self.tmp_path(INSTANCE_JSON_FILE, tmp)
content = util.load_file(json_file)
expected_metadata = {
'key1': 'val1',
'key2': {
'key2.1': "Warning: redacted unserializable type <class"
" 'cloudinit.helpers.Paths'>"}}
instance_json = util.load_json(content)
self.assertEqual(
expected_metadata, instance_json['ds']['meta_data'])
def test_persist_instance_data_writes_ec2_metadata_when_set(self):
"""When ec2_metadata class attribute is set, persist to json."""
tmp = self.tmp_dir()
datasource = DataSourceTestSubclassNet(
self.sys_cfg, self.distro, Paths({'run_dir': tmp}))
datasource.ec2_metadata = UNSET
datasource.get_data()
json_file = self.tmp_path(INSTANCE_JSON_FILE, tmp)
instance_data = util.load_json(util.load_file(json_file))
self.assertNotIn('ec2_metadata', instance_data['ds'])
datasource.ec2_metadata = {'ec2stuff': 'is good'}
datasource.persist_instance_data()
instance_data = util.load_json(util.load_file(json_file))
self.assertEqual(
{'ec2stuff': 'is good'},
instance_data['ds']['ec2_metadata'])
def test_persist_instance_data_writes_network_json_when_set(self):
"""When network_data.json class attribute is set, persist to json."""
tmp = self.tmp_dir()
datasource = DataSourceTestSubclassNet(
self.sys_cfg, self.distro, Paths({'run_dir': tmp}))
datasource.get_data()
json_file = self.tmp_path(INSTANCE_JSON_FILE, tmp)
instance_data = util.load_json(util.load_file(json_file))
self.assertNotIn('network_json', instance_data['ds'])
datasource.network_json = {'network_json': 'is good'}
datasource.persist_instance_data()
instance_data = util.load_json(util.load_file(json_file))
self.assertEqual(
{'network_json': 'is good'},
instance_data['ds']['network_json'])
@skipIf(not six.PY3, "json serialization on <= py2.7 handles bytes")
def test_get_data_base64encodes_unserializable_bytes(self):
"""On py3, get_data base64encodes any unserializable content."""
tmp = self.tmp_dir()
datasource = DataSourceTestSubclassNet(
self.sys_cfg, self.distro, Paths({'run_dir': tmp}),
custom_metadata={'key1': 'val1', 'key2': {'key2.1': b'\x123'}})
self.assertTrue(datasource.get_data())
json_file = self.tmp_path(INSTANCE_JSON_FILE, tmp)
content = util.load_file(json_file)
instance_json = util.load_json(content)
self.assertItemsEqual(
['ds/meta_data/key2/key2.1'],
instance_json['base64_encoded_keys'])
self.assertEqual(
{'key1': 'val1', 'key2': {'key2.1': 'EjM='}},
instance_json['ds']['meta_data'])
@skipIf(not six.PY2, "json serialization on <= py2.7 handles bytes")
def test_get_data_handles_bytes_values(self):
"""On py2 get_data handles bytes values without having to b64encode."""
tmp = self.tmp_dir()
datasource = DataSourceTestSubclassNet(
self.sys_cfg, self.distro, Paths({'run_dir': tmp}),
custom_metadata={'key1': 'val1', 'key2': {'key2.1': b'\x123'}})
self.assertTrue(datasource.get_data())
json_file = self.tmp_path(INSTANCE_JSON_FILE, tmp)
content = util.load_file(json_file)
instance_json = util.load_json(content)
self.assertEqual([], instance_json['base64_encoded_keys'])
self.assertEqual(
{'key1': 'val1', 'key2': {'key2.1': '\x123'}},
instance_json['ds']['meta_data'])
@skipIf(not six.PY2, "Only python2 hits UnicodeDecodeErrors on non-utf8")
def test_non_utf8_encoding_logs_warning(self):
"""When non-utf-8 values exist in py2 instance-data is not written."""
tmp = self.tmp_dir()
datasource = DataSourceTestSubclassNet(
self.sys_cfg, self.distro, Paths({'run_dir': tmp}),
custom_metadata={'key1': 'val1', 'key2': {'key2.1': b'ab\xaadef'}})
self.assertTrue(datasource.get_data())
json_file = self.tmp_path(INSTANCE_JSON_FILE, tmp)
self.assertFalse(os.path.exists(json_file))
self.assertIn(
"WARNING: Error persisting instance-data.json: 'utf8' codec can't"
" decode byte 0xaa in position 2: invalid start byte",
self.logs.getvalue())
def test_get_hostname_subclass_support(self):
"""Validate get_hostname signature on all subclasses of DataSource."""
# Use inspect.getfullargspec when we drop py2.6 and py2.7
get_args = inspect.getargspec # pylint: disable=W1505
base_args = get_args(DataSource.get_hostname) # pylint: disable=W1505
# Import all DataSource subclasses so we can inspect them.
modules = util.find_modules(os.path.dirname(os.path.dirname(__file__)))
for _loc, name in modules.items():
mod_locs, _ = importer.find_module(name, ['cloudinit.sources'], [])
if mod_locs:
importer.import_module(mod_locs[0])
for child in DataSource.__subclasses__():
if 'Test' in child.dsname:
continue
self.assertEqual(
base_args,
get_args(child.get_hostname), # pylint: disable=W1505
'%s does not implement DataSource.get_hostname params'
% child)
for grandchild in child.__subclasses__():
self.assertEqual(
base_args,
get_args(grandchild.get_hostname), # pylint: disable=W1505
'%s does not implement DataSource.get_hostname params'
% grandchild)
def test_clear_cached_attrs_resets_cached_attr_class_attributes(self):
"""Class attributes listed in cached_attr_defaults are reset."""
count = 0
# Setup values for all cached class attributes
for attr, value in self.datasource.cached_attr_defaults:
setattr(self.datasource, attr, count)
count += 1
self.datasource._dirty_cache = True
self.datasource.clear_cached_attrs()
for attr, value in self.datasource.cached_attr_defaults:
self.assertEqual(value, getattr(self.datasource, attr))
def test_clear_cached_attrs_noops_on_clean_cache(self):
"""Class attributes listed in cached_attr_defaults are reset."""
count = 0
# Setup values for all cached class attributes
for attr, _ in self.datasource.cached_attr_defaults:
setattr(self.datasource, attr, count)
count += 1
self.datasource._dirty_cache = False # Fake clean cache
self.datasource.clear_cached_attrs()
count = 0
for attr, _ in self.datasource.cached_attr_defaults:
self.assertEqual(count, getattr(self.datasource, attr))
count += 1
def test_clear_cached_attrs_skips_non_attr_class_attributes(self):
"""Skip any cached_attr_defaults which aren't class attributes."""
self.datasource._dirty_cache = True
self.datasource.clear_cached_attrs()
for attr in ('ec2_metadata', 'network_json'):
self.assertFalse(hasattr(self.datasource, attr))
def test_clear_cached_attrs_of_custom_attrs(self):
"""Custom attr_values can be passed to clear_cached_attrs."""
self.datasource._dirty_cache = True
cached_attr_name = self.datasource.cached_attr_defaults[0][0]
setattr(self.datasource, cached_attr_name, 'himom')
self.datasource.myattr = 'orig'
self.datasource.clear_cached_attrs(
attr_defaults=(('myattr', 'updated'),))
self.assertEqual('himom', getattr(self.datasource, cached_attr_name))
self.assertEqual('updated', self.datasource.myattr)
def test_update_metadata_only_acts_on_supported_update_events(self):
"""update_metadata won't get_data on unsupported update events."""
self.datasource.update_events['network'].discard(EventType.BOOT)
self.assertEqual(
{'network': set([EventType.BOOT_NEW_INSTANCE])},
self.datasource.update_events)
def fake_get_data():
raise Exception('get_data should not be called')
self.datasource.get_data = fake_get_data
self.assertFalse(
self.datasource.update_metadata(
source_event_types=[EventType.BOOT]))
def test_update_metadata_returns_true_on_supported_update_event(self):
"""update_metadata returns get_data response on supported events."""
def fake_get_data():
return True
self.datasource.get_data = fake_get_data
self.datasource._network_config = 'something'
self.datasource._dirty_cache = True
self.assertTrue(
self.datasource.update_metadata(
source_event_types=[
EventType.BOOT, EventType.BOOT_NEW_INSTANCE]))
self.assertEqual(UNSET, self.datasource._network_config)
self.assertIn(
"DEBUG: Update datasource metadata and network config due to"
" events: New instance first boot",
self.logs.getvalue())
def test_data_sources_cant_mutate_update_events_for_others(self):
"""update_events shouldn't be changed for other DSes (LP: #1819913)"""
class ModifyingDS(DataSource):
def __init__(self, sys_cfg, distro, paths):
# This mirrors what DataSourceAzure does which causes LP:
# #1819913
DataSource.__init__(self, sys_cfg, distro, paths)
self.update_events['network'].add(EventType.BOOT)
before_update_events = copy.deepcopy(self.datasource.update_events)
ModifyingDS(self.sys_cfg, self.distro, self.paths)
self.assertEqual(before_update_events, self.datasource.update_events)