Refactor vendor detection and add Redfish implementation

Get rid of the TODO in the code and prepare for more management
interfaces supporting detect_vendor(). Vendor detecting now runs
during transition to manageable and on power state sync (essentially
same as before but for all drivers not only IPMI).

Update the IPMI implementation to no longer hide exceptions since
they're not handled on the upper level. Simplify the regex and fix
the docstring.

Add the Redfish implementation as a foundation for future
vendor-specific changes.

Change-Id: Ie521cf2295613dde5842cbf9a053540a40be4b9c

8 files changed, 166 insertions, 57 deletions

diff --git a/ironic/conductor/manager.py b/ironic/conductor/manager.py
index cacae082b..d22cd8525 100644
--- a/ironic/conductor/manager.py
+++ b/ironic/conductor/manager.py
@@ -1171,6 +1171,8 @@ class ConductorManager(base_manager.BaseConductorManager):
         if error is None:
             # Retrieve BIOS config settings for this node
             utils.node_cache_bios_settings(task, node)
+            # Cache the vendor if possible
+            utils.node_cache_vendor(task)
 
             if power_state != node.power_state:
                 old_power_state = node.power_state
@@ -3572,6 +3574,10 @@ def do_sync_power_state(task, count):
                          'retries': max_retries, 'err': e})
         return count
 
+    # Make sure we have the vendor cached (if for some reason it failed during
+    # the transition to manageable or a really old API version was used).
+    utils.node_cache_vendor(task)
+
     if node.power_state and node.power_state == power_state:
         # No action is needed
         return 0
diff --git a/ironic/conductor/utils.py b/ironic/conductor/utils.py
index fccb9261c..d0e2bbd15 100644
--- a/ironic/conductor/utils.py
+++ b/ironic/conductor/utils.py
@@ -1359,3 +1359,34 @@ def node_cache_bios_settings(task, node):
         msg = (_('Caching of bios settings failed on node %(node)s.')
                % {'node': node.uuid})
         LOG.exception(msg)
+
+
+def node_cache_vendor(task):
+    """Cache the vendor if it can be detected."""
+    properties = task.node.properties
+    if properties.get('vendor'):
+        return  # assume that vendors don't change on fly
+
+    try:
+        # We have no vendor stored, so we'll go ahead and
+        # call to store it.
+        vendor = task.driver.management.detect_vendor(task)
+        if not vendor:
+            return
+
+        # This function may be called without an exclusive lock, so get one
+        task.upgrade_lock(purpose='caching node vendor')
+    except exception.UnsupportedDriverExtension:
+        return
+    except Exception as exc:
+        LOG.warning('Unexpected exception when trying to detect vendor '
+                    'for node %(node)s. %(class)s: %(exc)s',
+                    {'node': task.node.uuid,
+                     'class': type(exc).__name__, 'exc': exc},
+                    exc_info=not isinstance(exc, exception.IronicException))
+        return
+
+    props = task.node.properties
+    props['vendor'] = vendor
+    task.node.properties = props
+    task.node.save()
diff --git a/ironic/drivers/modules/ipmitool.py b/ironic/drivers/modules/ipmitool.py
index 13391ef4e..9020b8234 100644
--- a/ironic/drivers/modules/ipmitool.py
+++ b/ironic/drivers/modules/ipmitool.py
@@ -939,25 +939,6 @@ class IPMIPower(base.PowerInterface):
             call).
 
         """
-        # NOTE(TheJulia): Temporary until we promote detect_vendor as
-        # a higher level management method and able to automatically
-        # run detection upon either power state sync or in the enrollment
-        # to management step.
-        try:
-            properties = task.node.properties
-            if not properties.get('vendor'):
-                # We have no vendor stored, so we'll go ahead and
-                # call to store it.
-                vendor = task.driver.management.detect_vendor(task)
-                if vendor:
-                    task.upgrade_lock()
-                    props = task.node.properties
-                    props['vendor'] = vendor
-                    task.node.properties = props
-                    task.node.save()
-        except exception.UnsupportedDriverExtension:
-            pass
-
         driver_info = _parse_driver_info(task.node)
         return _power_status(driver_info)
 
@@ -1244,12 +1225,7 @@ class IPMIManagement(base.ManagementInterface):
 
     @METRICS.timer('IPMIManagement.detect_vendor')
     def detect_vendor(self, task):
-        """Detects, stores, and returns the hardware vendor.
-
-        If the Node object ``properties`` field does not already contain
-        a ``vendor`` field, then this method is intended to query
-        Detects the BMC hardware vendor and stores the returned value
-        with-in the Node object ``properties`` field if detected.
+        """Detects and returns the hardware vendor.
 
         :param task: A task from TaskManager.
         :raises: InvalidParameterValue if an invalid component, indicator
@@ -1258,20 +1234,11 @@ class IPMIManagement(base.ManagementInterface):
         :returns: String representing the BMC reported Vendor or
                   Manufacturer, otherwise returns None.
         """
-        try:
-            driver_info = _parse_driver_info(task.node)
-            out, err = _exec_ipmitool(driver_info, "mc info")
-            re_obj = re.search("Manufacturer Name .*: (.+)", out)
-            if re_obj:
-                bmc_vendor = str(re_obj.groups('')[0]).lower().split(':')
-                # Pull unparsed data and save the vendor
-                return bmc_vendor[-1]
-        except (exception.PasswordFileFailedToCreate,
-                processutils.ProcessExecutionError) as e:
-            LOG.warning('IPMI get boot device failed to detect vendor '
-                        'of bmc for %(node)s. Error %(err)s',
-                        {'node': task.node.uuid,
-                         'err': e})
+        driver_info = _parse_driver_info(task.node)
+        out, err = _exec_ipmitool(driver_info, "mc info")
+        re_obj = re.search("Manufacturer Name *: (.+)", out)
+        if re_obj:
+            return re_obj.group(1).lower()
 
     @METRICS.timer('IPMIManagement.get_sensors_data')
     def get_sensors_data(self, task):
diff --git a/ironic/drivers/modules/redfish/management.py b/ironic/drivers/modules/redfish/management.py
index 2e89d0aa1..9d49a21eb 100644
--- a/ironic/drivers/modules/redfish/management.py
+++ b/ironic/drivers/modules/redfish/management.py
@@ -677,6 +677,21 @@ class RedfishManagement(base.ManagementInterface):
                                 'component': component,
                                 'uuid': task.node.uuid})
 
+    def detect_vendor(self, task):
+        """Detects and returns the hardware vendor.
+
+        Uses the System's Manufacturer field.
+
+        :param task: A task from TaskManager.
+        :raises: InvalidParameterValue if an invalid component, indicator
+            or state is specified.
+        :raises: MissingParameterValue if a required parameter is missing
+        :raises: RedfishError on driver-specific problems.
+        :returns: String representing the BMC reported Vendor or
+                  Manufacturer, otherwise returns None.
+        """
+        return redfish_utils.get_system(task.node).manufacturer
+
     @METRICS.timer('RedfishManagement.update_firmware')
     @base.clean_step(priority=0, abortable=False, argsinfo={
         'firmware_images': {
diff --git a/ironic/tests/unit/conductor/test_manager.py b/ironic/tests/unit/conductor/test_manager.py
index b3d3f4251..c5fd84279 100644
--- a/ironic/tests/unit/conductor/test_manager.py
+++ b/ironic/tests/unit/conductor/test_manager.py
@@ -2981,6 +2981,7 @@ class DoNodeRescueTestCase(mgr_utils.CommonMixIn, mgr_utils.ServiceSetUpMixin,
 
 @mgr_utils.mock_record_keepalive
 class DoNodeVerifyTestCase(mgr_utils.ServiceSetUpMixin, db_base.DbTestCase):
+    @mock.patch.object(conductor_utils, 'node_cache_vendor', autospec=True)
     @mock.patch('ironic.objects.node.NodeCorrectedPowerStateNotification',
                 autospec=True)
     @mock.patch('ironic.drivers.modules.fake.FakePower.get_power_state',
@@ -2988,7 +2989,7 @@ class DoNodeVerifyTestCase(mgr_utils.ServiceSetUpMixin, db_base.DbTestCase):
     @mock.patch('ironic.drivers.modules.fake.FakePower.validate',
                 autospec=True)
     def test__do_node_verify(self, mock_validate, mock_get_power_state,
-                             mock_notif):
+                             mock_notif, mock_cache_vendor):
         self._start_service()
         mock_get_power_state.return_value = states.POWER_OFF
         # Required for exception handling
@@ -3003,6 +3004,7 @@ class DoNodeVerifyTestCase(mgr_utils.ServiceSetUpMixin, db_base.DbTestCase):
         with task_manager.acquire(
                 self.context, node['id'], shared=False) as task:
             self.service._do_node_verify(task)
+            mock_cache_vendor.assert_called_once_with(task)
 
         self._stop_service()
 
@@ -4672,6 +4674,8 @@ class ManagerDoSyncPowerStateTestCase(db_base.DbTestCase):
         super(ManagerDoSyncPowerStateTestCase, self).setUp()
         self.service = manager.ConductorManager('hostname', 'test-topic')
         self.driver = mock.Mock(spec_set=drivers_base.BareDriver)
+        self.driver.management.detect_vendor.side_effect = \
+            exception.UnsupportedDriverExtension
         self.power = self.driver.power
         self.node = obj_utils.create_test_node(
             self.context, driver='fake-hardware', maintenance=False,
@@ -4984,6 +4988,24 @@ class ManagerDoSyncPowerStateTestCase(db_base.DbTestCase):
         self.assertFalse(node_power_action.called)
         self.task.upgrade_lock.assert_called_once_with()
 
+    @mock.patch.object(nova, 'power_update', autospec=True)
+    def test_vendor_detection(self, mock_power_update, node_power_action):
+        self.driver.management.detect_vendor.side_effect = [
+            "Fake Inc."
+        ]
+        self._do_sync_power_state(states.POWER_ON, states.POWER_OFF)
+
+        self.assertFalse(self.power.validate.called)
+        self.power.get_power_state.assert_called_once_with(self.task)
+        self.assertFalse(node_power_action.called)
+        self.assertEqual(states.POWER_OFF, self.node.power_state)
+        # node_cache_vendor calls upgrade_lock, then power update does it once
+        # more (which is safe because TaskManager checks its state)
+        self.assertEqual(2, self.task.upgrade_lock.call_count)
+        mock_power_update.assert_called_once_with(
+            self.task.context, self.node.instance_uuid, states.POWER_OFF)
+        self.assertEqual("Fake Inc.", self.node.properties['vendor'])
+
 
 @mock.patch.object(waiters, 'wait_for_all',
                    new=mock.MagicMock(return_value=(0, 0)))
diff --git a/ironic/tests/unit/conductor/test_utils.py b/ironic/tests/unit/conductor/test_utils.py
index a41559898..8d0bf5f35 100644
--- a/ironic/tests/unit/conductor/test_utils.py
+++ b/ironic/tests/unit/conductor/test_utils.py
@@ -2195,3 +2195,76 @@ class StoreAgentCertificateTestCase(db_base.DbTestCase):
         self.assertEqual(self.fname, result)
         with open(self.fname, 'rt') as fp:
             self.assertEqual('cert text', fp.read())
+
+
+@mock.patch.object(fake.FakeManagement, 'detect_vendor', autospec=True,
+                   return_value="Fake Inc.")
+class CacheVendorTestCase(db_base.DbTestCase):
+
+    def setUp(self):
+        super(CacheVendorTestCase, self).setUp()
+        self.node = obj_utils.create_test_node(self.context,
+                                               driver='fake-hardware',
+                                               properties={})
+
+    def test_ok(self, mock_detect):
+        with task_manager.acquire(self.context, self.node.id,
+                                  shared=True) as task:
+            conductor_utils.node_cache_vendor(task)
+            self.assertFalse(task.shared)
+            mock_detect.assert_called_once_with(task.driver.management, task)
+
+        self.node.refresh()
+        self.assertEqual("Fake Inc.", self.node.properties['vendor'])
+
+    def test_already_present(self, mock_detect):
+        self.node.properties = {'vendor': "Fake GmbH"}
+        self.node.save()
+
+        with task_manager.acquire(self.context, self.node.id,
+                                  shared=True) as task:
+            conductor_utils.node_cache_vendor(task)
+            self.assertTrue(task.shared)
+
+        self.node.refresh()
+        self.assertEqual("Fake GmbH", self.node.properties['vendor'])
+        self.assertFalse(mock_detect.called)
+
+    def test_empty(self, mock_detect):
+        mock_detect.return_value = None
+        with task_manager.acquire(self.context, self.node.id,
+                                  shared=True) as task:
+            conductor_utils.node_cache_vendor(task)
+            self.assertTrue(task.shared)
+            mock_detect.assert_called_once_with(task.driver.management, task)
+
+        self.node.refresh()
+        self.assertNotIn('vendor', self.node.properties)
+
+    @mock.patch.object(conductor_utils.LOG, 'warning', autospec=True)
+    def test_unsupported(self, mock_log, mock_detect):
+        mock_detect.side_effect = exception.UnsupportedDriverExtension
+
+        with task_manager.acquire(self.context, self.node.id,
+                                  shared=True) as task:
+            conductor_utils.node_cache_vendor(task)
+            self.assertTrue(task.shared)
+            mock_detect.assert_called_once_with(task.driver.management, task)
+
+        self.node.refresh()
+        self.assertNotIn('vendor', self.node.properties)
+        self.assertFalse(mock_log.called)
+
+    @mock.patch.object(conductor_utils.LOG, 'warning', autospec=True)
+    def test_failed(self, mock_log, mock_detect):
+        mock_detect.side_effect = RuntimeError
+
+        with task_manager.acquire(self.context, self.node.id,
+                                  shared=True) as task:
+            conductor_utils.node_cache_vendor(task)
+            self.assertTrue(task.shared)
+            mock_detect.assert_called_once_with(task.driver.management, task)
+
+        self.node.refresh()
+        self.assertNotIn('vendor', self.node.properties)
+        self.assertTrue(mock_log.called)
diff --git a/ironic/tests/unit/drivers/modules/redfish/test_management.py b/ironic/tests/unit/drivers/modules/redfish/test_management.py
index a1fb4e8d0..dc67e17d6 100644
--- a/ironic/tests/unit/drivers/modules/redfish/test_management.py
+++ b/ironic/tests/unit/drivers/modules/redfish/test_management.py
@@ -702,6 +702,14 @@ class RedfishManagementTestCase(db_base.DbTestCase):
 
             self.assertEqual(indicator_states.ON, state)
 
+    @mock.patch.object(redfish_utils, 'get_system', autospec=True)
+    def test_detect_vendor(self, mock_get_system):
+        mock_get_system.return_value.manufacturer = "Fake GmbH"
+        with task_manager.acquire(self.context, self.node.uuid,
+                                  shared=True) as task:
+            response = task.driver.management.detect_vendor(task)
+            self.assertEqual("Fake GmbH", response)
+
     @mock.patch.object(manager_utils, 'node_power_action', autospec=True)
     @mock.patch.object(deploy_utils, 'get_async_step_return_state',
                        autospec=True)
diff --git a/ironic/tests/unit/drivers/modules/test_ipmitool.py b/ironic/tests/unit/drivers/modules/test_ipmitool.py
index f4d54e74c..7a172ec2d 100644
--- a/ironic/tests/unit/drivers/modules/test_ipmitool.py
+++ b/ironic/tests/unit/drivers/modules/test_ipmitool.py
@@ -1541,16 +1541,14 @@ class IPMIToolPrivateMethodTestCase(
 
         self.assertEqual(expected, mock_exec.call_args_list)
 
-    @mock.patch.object(ipmi.IPMIManagement, 'detect_vendor', autospec=True)
     @mock.patch.object(ipmi, '_exec_ipmitool', autospec=True)
     @mock.patch('oslo_utils.eventletutils.EventletEvent.wait', autospec=True)
-    def test__soft_power_off(self, sleep_mock, mock_exec, mock_vendor):
+    def test__soft_power_off(self, sleep_mock, mock_exec):
         def side_effect(driver_info, command, **kwargs):
             resp_dict = {"power status": ["Chassis Power is off\n", None],
                          "power soft": [None, None]}
             return resp_dict.get(command, ["Bad\n", None])
 
-        mock_vendor.return_value = None
         mock_exec.side_effect = side_effect
 
         expected = [mock.call(self.info, "power soft"),
@@ -1561,13 +1559,10 @@ class IPMIToolPrivateMethodTestCase(
 
         self.assertEqual(expected, mock_exec.call_args_list)
         self.assertEqual(states.POWER_OFF, state)
-        self.assertTrue(mock_vendor.called)
 
-    @mock.patch.object(ipmi.IPMIManagement, 'detect_vendor', autospec=True)
     @mock.patch.object(ipmi, '_exec_ipmitool', autospec=True)
     @mock.patch('oslo_utils.eventletutils.EventletEvent.wait', autospec=True)
-    def test__soft_power_off_max_retries(self, sleep_mock, mock_exec,
-                                         mock_vendor):
+    def test__soft_power_off_max_retries(self, sleep_mock, mock_exec):
 
         def side_effect(driver_info, command, **kwargs):
             resp_dict = {"power status": ["Chassis Power is on\n", None],
@@ -1586,8 +1581,6 @@ class IPMIToolPrivateMethodTestCase(
                               ipmi._soft_power_off, task, self.info, timeout=2)
 
         self.assertEqual(expected, mock_exec.call_args_list)
-        # Should be removed when detect_vendor automatic invocation is moved.
-        self.assertFalse(mock_vendor.called)
 
     @mock.patch.object(ipmi, '_power_status', autospec=True)
     @mock.patch.object(ipmi, '_exec_ipmitool', autospec=True)
@@ -1661,9 +1654,8 @@ class IPMIToolDriverTestCase(Base):
             self.assertEqual(sorted(expected),
                              sorted(task.driver.get_properties()))
 
-    @mock.patch.object(ipmi.IPMIManagement, 'detect_vendor', autospec=True)
     @mock.patch.object(ipmi, '_exec_ipmitool', autospec=True)
-    def test_get_power_state(self, mock_exec, mock_detect):
+    def test_get_power_state(self, mock_exec):
         returns = iter([["Chassis Power is off\n", None],
                         ["Chassis Power is on\n", None],
                         ["\n", None]])
@@ -1671,7 +1663,6 @@ class IPMIToolDriverTestCase(Base):
                     mock.call(self.info, "power status", kill_on_timeout=True),
                     mock.call(self.info, "power status", kill_on_timeout=True)]
         mock_exec.side_effect = returns
-        mock_detect.return_value = None
 
         with task_manager.acquire(self.context, self.node.uuid) as task:
             pstate = self.power.get_power_state(task)
@@ -1684,20 +1675,16 @@ class IPMIToolDriverTestCase(Base):
             self.assertEqual(states.ERROR, pstate)
 
         self.assertEqual(mock_exec.call_args_list, expected)
-        self.assertEqual(3, mock_detect.call_count)
 
-    @mock.patch.object(ipmi.IPMIManagement, 'detect_vendor', autospec=True)
     @mock.patch.object(ipmi, '_exec_ipmitool', autospec=True)
-    def test_get_power_state_exception(self, mock_exec, mock_vendor):
+    def test_get_power_state_exception(self, mock_exec):
         mock_exec.side_effect = processutils.ProcessExecutionError("error")
-        mock_vendor.return_value = None
         with task_manager.acquire(self.context, self.node.uuid) as task:
             self.assertRaises(exception.IPMIFailure,
                               self.power.get_power_state,
                               task)
         mock_exec.assert_called_once_with(self.info, "power status",
                                           kill_on_timeout=True)
-        self.assertEqual(1, mock_vendor.call_count)
 
     @mock.patch.object(ipmi, '_power_on', autospec=True)
     @mock.patch.object(ipmi, '_power_off', autospec=True)