Support force update logical port

Sometimes, user want to use X-Allow-Overwrite header set to true to
force update the logical port

Change-Id: I3a82f73d67766b2105a6ffa4f4c465fb7b4a56e7

vmware_nsxlib/tests/unit/v3/test_resources.py

@@ -801,6 +801,34 @@ class LogicalPortTestCase(BaseTestResource):
             data=jsonutils.dumps(fake_port, sort_keys=True),
             headers=self.default_headers())
 
+    def test_update_port_with_force_true(self):
+        """Test modifying tags using tags attribute with force true"""
+        fake_port = copy.deepcopy(test_constants.FAKE_PORT)
+        orig_tags = [{'scope': 'a1', 'tag': 'b1'},
+                     {'scope': 'a2', 'tag': 'b2'}]
+        fake_port['tags'] = orig_tags
+        # Add a new tag
+        new_tags = [{'scope': 'a3', 'tag': 'b3'}]
+        mocked_resource = self.get_mocked_resource()
+
+        def get_fake_port(*args, **kwargs):
+            return copy.copy(fake_port)
+
+        mocked_resource.client.get = get_fake_port
+        mocked_resource.update(
+            fake_port['id'],
+            fake_port['attachment']['id'],
+            tags=new_tags, force=True)
+        # update expected result:
+        fake_port['tags'] = new_tags
+        headers = self.default_headers()
+        headers['X-Allow-Overwrite'] = 'true'
+        test_client.assert_json_call(
+            'put', mocked_resource,
+            'https://1.2.3.4/api/v1/logical-ports/%s' % fake_port['id'],
+            data=jsonutils.dumps(fake_port, sort_keys=True),
+            headers=headers)
+
 
 class LogicalRouterTestCase(BaseTestResource):
 

vmware_nsxlib/v3/resources.py

@@ -195,7 +195,7 @@ class LogicalPort(utils.NsxLibApiBase):
                vif_type=None, app_id=None,
                allocate_addresses=nsx_constants.ALLOCATE_ADDRESS_NONE,
                description=None, tn_uuid=None,
-               extra_configs=None):
+               extra_configs=None, force=False):
         # Do not allow tags & tags_update at the same call
         if tags_update and tags:
             raise exceptions.ManagerError(
@@ -219,8 +219,12 @@ class LogicalPort(utils.NsxLibApiBase):
             extra_configs=extra_configs,
             tags=tags))
 
+        headers = None
+        if force:
+            headers = {'X-Allow-Overwrite': 'true'}
+
         return self._update_resource(
-            self.get_path(lport_id), lport, retry=True)
+            self.get_path(lport_id), lport, headers=headers, retry=True)
 
     def get_by_attachment(self, attachment_type, attachment_id):
         """Return all logical port matching the attachment type and Id"""