diff options
| -rw-r--r-- | cloudinit/sources/DataSourceAzure.py | 21 | ||||
| -rw-r--r-- | tests/unittests/test_datasource/test_azure.py | 170 |
2 files changed, 134 insertions, 57 deletions
diff --git a/cloudinit/sources/DataSourceAzure.py b/cloudinit/sources/DataSourceAzure.py index a71197a6..1b03d460 100644 --- a/cloudinit/sources/DataSourceAzure.py +++ b/cloudinit/sources/DataSourceAzure.py @@ -48,6 +48,7 @@ DEFAULT_FS = 'ext4' # DMI chassis-asset-tag is set static for all azure instances AZURE_CHASSIS_ASSET_TAG = '7783-7084-3265-9085-8269-3286-77' REPROVISION_MARKER_FILE = "/var/lib/cloud/data/poll_imds" +REPORTED_READY_MARKER_FILE = "/var/lib/cloud/data/reported_ready" IMDS_URL = "http://169.254.169.254/metadata/reprovisiondata" @@ -436,11 +437,12 @@ class DataSourceAzure(sources.DataSource): LOG.debug("negotiating already done for %s", self.get_instance_id()) - def _poll_imds(self, report_ready=True): + def _poll_imds(self): """Poll IMDS for the new provisioning data until we get a valid response. Then return the returned JSON object.""" url = IMDS_URL + "?api-version=2017-04-02" headers = {"Metadata": "true"} + report_ready = bool(not os.path.isfile(REPORTED_READY_MARKER_FILE)) LOG.debug("Start polling IMDS") def exc_cb(msg, exception): @@ -450,13 +452,17 @@ class DataSourceAzure(sources.DataSource): # call DHCP and setup the ephemeral network to acquire the new IP. return False - need_report = report_ready while True: try: with EphemeralDHCPv4() as lease: - if need_report: + if report_ready: + path = REPORTED_READY_MARKER_FILE + LOG.info( + "Creating a marker file to report ready: %s", path) + util.write_file(path, "{pid}: {time}\n".format( + pid=os.getpid(), time=time())) self._report_ready(lease=lease) - need_report = False + report_ready = False return readurl(url, timeout=1, headers=headers, exception_cb=exc_cb, infinite=True).contents except UrlError: @@ -490,8 +496,10 @@ class DataSourceAzure(sources.DataSource): if (cfg.get('PreprovisionedVm') is True or os.path.isfile(path)): if not os.path.isfile(path): - LOG.info("Creating a marker file to poll imds") - util.write_file(path, "%s: %s\n" % (os.getpid(), time())) + LOG.info("Creating a marker file to poll imds: %s", + path) + util.write_file(path, "{pid}: {time}\n".format( + pid=os.getpid(), time=time())) return True return False @@ -526,6 +534,7 @@ class DataSourceAzure(sources.DataSource): "Error communicating with Azure fabric; You may experience." "connectivity issues.", exc_info=True) return False + util.del_file(REPORTED_READY_MARKER_FILE) util.del_file(REPROVISION_MARKER_FILE) return fabric_data diff --git a/tests/unittests/test_datasource/test_azure.py b/tests/unittests/test_datasource/test_azure.py index 88fe76c7..26e8d7d3 100644 --- a/tests/unittests/test_datasource/test_azure.py +++ b/tests/unittests/test_datasource/test_azure.py @@ -1125,19 +1125,9 @@ class TestAzureNetExists(CiTestCase): self.assertTrue(hasattr(dsaz, "DataSourceAzureNet")) -@mock.patch('cloudinit.sources.DataSourceAzure.util.subp') -@mock.patch.object(dsaz, 'get_hostname') -@mock.patch.object(dsaz, 'set_hostname') -class TestAzureDataSourcePreprovisioning(CiTestCase): - - def setUp(self): - super(TestAzureDataSourcePreprovisioning, self).setUp() - tmp = self.tmp_dir() - self.waagent_d = self.tmp_path('/var/lib/waagent', tmp) - self.paths = helpers.Paths({'cloud_dir': tmp}) - dsaz.BUILTIN_DS_CONFIG['data_dir'] = self.waagent_d +class TestPreprovisioningReadAzureOvfFlag(CiTestCase): - def test_read_azure_ovf_with_true_flag(self, *args): + def test_read_azure_ovf_with_true_flag(self): """The read_azure_ovf method should set the PreprovisionedVM cfg flag if the proper setting is present.""" content = construct_valid_ovf_env( @@ -1146,7 +1136,7 @@ class TestAzureDataSourcePreprovisioning(CiTestCase): cfg = ret[2] self.assertTrue(cfg['PreprovisionedVm']) - def test_read_azure_ovf_with_false_flag(self, *args): + def test_read_azure_ovf_with_false_flag(self): """The read_azure_ovf method should set the PreprovisionedVM cfg flag to false if the proper setting is false.""" content = construct_valid_ovf_env( @@ -1155,7 +1145,7 @@ class TestAzureDataSourcePreprovisioning(CiTestCase): cfg = ret[2] self.assertFalse(cfg['PreprovisionedVm']) - def test_read_azure_ovf_without_flag(self, *args): + def test_read_azure_ovf_without_flag(self): """The read_azure_ovf method should not set the PreprovisionedVM cfg flag.""" content = construct_valid_ovf_env() @@ -1163,12 +1153,121 @@ class TestAzureDataSourcePreprovisioning(CiTestCase): cfg = ret[2] self.assertFalse(cfg['PreprovisionedVm']) - @mock.patch('cloudinit.sources.DataSourceAzure.util.is_FreeBSD') - @mock.patch('cloudinit.net.dhcp.EphemeralIPv4Network') - @mock.patch('cloudinit.net.dhcp.maybe_perform_dhcp_discovery') - @mock.patch('requests.Session.request') + +@mock.patch('os.path.isfile') +class TestPreprovisioningShouldReprovision(CiTestCase): + + def setUp(self): + super(TestPreprovisioningShouldReprovision, self).setUp() + tmp = self.tmp_dir() + self.waagent_d = self.tmp_path('/var/lib/waagent', tmp) + self.paths = helpers.Paths({'cloud_dir': tmp}) + dsaz.BUILTIN_DS_CONFIG['data_dir'] = self.waagent_d + + @mock.patch('cloudinit.sources.DataSourceAzure.util.write_file') + def test__should_reprovision_with_true_cfg(self, isfile, write_f): + """The _should_reprovision method should return true with config + flag present.""" + isfile.return_value = False + dsa = dsaz.DataSourceAzure({}, distro=None, paths=self.paths) + self.assertTrue(dsa._should_reprovision( + (None, None, {'PreprovisionedVm': True}, None))) + + def test__should_reprovision_with_file_existing(self, isfile): + """The _should_reprovision method should return True if the sentinal + exists.""" + isfile.return_value = True + dsa = dsaz.DataSourceAzure({}, distro=None, paths=self.paths) + self.assertTrue(dsa._should_reprovision( + (None, None, {'preprovisionedvm': False}, None))) + + def test__should_reprovision_returns_false(self, isfile): + """The _should_reprovision method should return False + if config and sentinal are not present.""" + isfile.return_value = False + dsa = dsaz.DataSourceAzure({}, distro=None, paths=self.paths) + self.assertFalse(dsa._should_reprovision((None, None, {}, None))) + + @mock.patch('cloudinit.sources.DataSourceAzure.DataSourceAzure._poll_imds') + def test_reprovision_calls__poll_imds(self, _poll_imds, isfile): + """_reprovision will poll IMDS.""" + isfile.return_value = False + hostname = "myhost" + username = "myuser" + odata = {'HostName': hostname, 'UserName': username} + _poll_imds.return_value = construct_valid_ovf_env(data=odata) + dsa = dsaz.DataSourceAzure({}, distro=None, paths=self.paths) + dsa._reprovision() + _poll_imds.assert_called_with() + + +@mock.patch('cloudinit.net.dhcp.EphemeralIPv4Network') +@mock.patch('cloudinit.net.dhcp.maybe_perform_dhcp_discovery') +@mock.patch('requests.Session.request') +@mock.patch( + 'cloudinit.sources.DataSourceAzure.DataSourceAzure._report_ready') +class TestPreprovisioningPollIMDS(CiTestCase): + + def setUp(self): + super(TestPreprovisioningPollIMDS, self).setUp() + self.tmp = self.tmp_dir() + self.waagent_d = self.tmp_path('/var/lib/waagent', self.tmp) + self.paths = helpers.Paths({'cloud_dir': self.tmp}) + dsaz.BUILTIN_DS_CONFIG['data_dir'] = self.waagent_d + + @mock.patch('cloudinit.sources.DataSourceAzure.util.write_file') + def test_poll_imds_calls_report_ready(self, write_f, report_ready_func, + fake_resp, m_dhcp, m_net): + """The poll_imds will call report_ready after creating marker file.""" + report_marker = self.tmp_path('report_marker', self.tmp) + lease = { + 'interface': 'eth9', 'fixed-address': '192.168.2.9', + 'routers': '192.168.2.1', 'subnet-mask': '255.255.255.0', + 'unknown-245': '624c3620'} + m_dhcp.return_value = [lease] + dsa = dsaz.DataSourceAzure({}, distro=None, paths=self.paths) + mock_path = ( + 'cloudinit.sources.DataSourceAzure.REPORTED_READY_MARKER_FILE') + with mock.patch(mock_path, report_marker): + dsa._poll_imds() + self.assertEqual(report_ready_func.call_count, 1) + report_ready_func.assert_called_with(lease=lease) + + def test_poll_imds_report_ready_false(self, report_ready_func, + fake_resp, m_dhcp, m_net): + """The poll_imds should not call reporting ready + when flag is false""" + report_marker = self.tmp_path('report_marker', self.tmp) + write_file(report_marker, content='dont run report_ready :)') + m_dhcp.return_value = [{ + 'interface': 'eth9', 'fixed-address': '192.168.2.9', + 'routers': '192.168.2.1', 'subnet-mask': '255.255.255.0', + 'unknown-245': '624c3620'}] + dsa = dsaz.DataSourceAzure({}, distro=None, paths=self.paths) + mock_path = ( + 'cloudinit.sources.DataSourceAzure.REPORTED_READY_MARKER_FILE') + with mock.patch(mock_path, report_marker): + dsa._poll_imds() + self.assertEqual(report_ready_func.call_count, 0) + + +@mock.patch('cloudinit.sources.DataSourceAzure.util.subp') +@mock.patch('cloudinit.sources.DataSourceAzure.util.write_file') +@mock.patch('cloudinit.sources.DataSourceAzure.util.is_FreeBSD') +@mock.patch('cloudinit.net.dhcp.EphemeralIPv4Network') +@mock.patch('cloudinit.net.dhcp.maybe_perform_dhcp_discovery') +@mock.patch('requests.Session.request') +class TestAzureDataSourcePreprovisioning(CiTestCase): + + def setUp(self): + super(TestAzureDataSourcePreprovisioning, self).setUp() + tmp = self.tmp_dir() + self.waagent_d = self.tmp_path('/var/lib/waagent', tmp) + self.paths = helpers.Paths({'cloud_dir': tmp}) + dsaz.BUILTIN_DS_CONFIG['data_dir'] = self.waagent_d + def test_poll_imds_returns_ovf_env(self, fake_resp, m_dhcp, m_net, - m_is_bsd, *args): + m_is_bsd, write_f, subp): """The _poll_imds method should return the ovf_env.xml.""" m_is_bsd.return_value = False m_dhcp.return_value = [{ @@ -1194,12 +1293,8 @@ class TestAzureDataSourcePreprovisioning(CiTestCase): prefix_or_mask='255.255.255.0', router='192.168.2.1') self.assertEqual(m_net.call_count, 1) - @mock.patch('cloudinit.sources.DataSourceAzure.util.is_FreeBSD') - @mock.patch('cloudinit.net.dhcp.EphemeralIPv4Network') - @mock.patch('cloudinit.net.dhcp.maybe_perform_dhcp_discovery') - @mock.patch('requests.Session.request') def test__reprovision_calls__poll_imds(self, fake_resp, m_dhcp, m_net, - m_is_bsd, *args): + m_is_bsd, write_f, subp): """The _reprovision method should call poll IMDS.""" m_is_bsd.return_value = False m_dhcp.return_value = [{ @@ -1231,32 +1326,5 @@ class TestAzureDataSourcePreprovisioning(CiTestCase): prefix_or_mask='255.255.255.0', router='192.168.2.1') self.assertEqual(m_net.call_count, 1) - @mock.patch('cloudinit.sources.DataSourceAzure.util.write_file') - @mock.patch('os.path.isfile') - def test__should_reprovision_with_true_cfg(self, isfile, write_f, *args): - """The _should_reprovision method should return true with config - flag present.""" - isfile.return_value = False - dsa = dsaz.DataSourceAzure({}, distro=None, paths=self.paths) - self.assertTrue(dsa._should_reprovision( - (None, None, {'PreprovisionedVm': True}, None))) - - @mock.patch('os.path.isfile') - def test__should_reprovision_with_file_existing(self, isfile, *args): - """The _should_reprovision method should return True if the sentinal - exists.""" - isfile.return_value = True - dsa = dsaz.DataSourceAzure({}, distro=None, paths=self.paths) - self.assertTrue(dsa._should_reprovision( - (None, None, {'preprovisionedvm': False}, None))) - - @mock.patch('os.path.isfile') - def test__should_reprovision_returns_false(self, isfile, *args): - """The _should_reprovision method should return False - if config and sentinal are not present.""" - isfile.return_value = False - dsa = dsaz.DataSourceAzure({}, distro=None, paths=self.paths) - self.assertFalse(dsa._should_reprovision((None, None, {}, None))) - # vi: ts=4 expandtab |