Handle validation failure if not all switch fields received

The Ironic API has a validation on the LocalLinkConnectionType to
ensure all mandatory values are included. Handle failures which
could occur if the switch does not send all mandatory fields.

Change-Id: I8716a69586265a58520cc2c6bc0bbc00a7c159da
Story: 2004238
Task: 27761

ironic_inspector/plugins/local_link_connection.py

@@ -16,6 +16,7 @@
 import binascii
 
 from construct import core
+from ironicclient import exceptions
 import netaddr
 from oslo_config import cfg
 from oslo_utils import netutils
@@ -157,4 +158,9 @@ class GenericLocalLinkConnectionHook(base.ProcessingHook):
                     if patch is not None:
                         patches.append(patch)
 
-            node_info.patch_port(port, patches)
+            try:
+                node_info.patch_port(port, patches)
+            except exceptions.BadRequest as e:
+                LOG.warning("Failed to update port %(uuid)s: %(error)s",
+                            {'uuid': port.uuid, 'error': e},
+                            node_info=node_info)

ironic_inspector/test/unit/test_plugins_local_link_connection.py

@@ -11,6 +11,7 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 
+from ironicclient import exceptions
 import mock
 from oslo_config import cfg
 
@@ -211,3 +212,20 @@ class TestGenericLocalLinkConnectionHook(test_base.NodeTest):
         ]
         self.hook.before_update(self.data, self.node_info)
         self.assertCalledWithPatch(patches, mock_patch)
+
+    @mock.patch('ironic_inspector.plugins.local_link_connection.LOG')
+    @mock.patch.object(node_cache.NodeInfo, 'patch_port')
+    def test_patch_port_exception(self, mock_patch, mock_log):
+        self.data['all_interfaces'] = {
+             'em1': {"ip": self.ips[0], "mac": self.macs[0],
+                     "lldp_processed": {
+                        "switch_chassis_id": "192.0.2.1",
+                        "switch_port_id": "Ethernet2/66"}
+                     }
+        }
+
+        mock_patch.side_effect = exceptions.BadRequest('invalid data')
+        self.hook.before_update(self.data, self.node_info)
+        log_msg = ("Failed to update port %(uuid)s: %(error)s")
+        mock_log.warning.assert_called_with(log_msg, mock.ANY,
+                                            node_info=mock.ANY)

releasenotes/notes/handle-patch-port-failure-9a8b85749104506f.yaml

@@ -0,0 +1,6 @@
+---
+fixes:
+  - Fixes issue that can result in introspection failure when a network switch
+    sends incomplete information for LLDP switch_id or port_id.  The validation
+    expects these fields when a port is updated, this fix now handles the
+    validation exception.