Support NO_SNAT & NO_DNAT rules in NSX 2.2

Adding flag ro mark the support of new NAAT rules actions in version
2.2, and adding validation for this field on create & update.

Change-Id: I4d99193caac6940911cc071016359a1361428967

vmware_nsxlib/tests/unit/v3/test_resources.py

@@ -660,9 +660,9 @@ class LogicalRouterTestCase(BaseTestResource):
             test_constants.FAKE_ROUTER_UUID, router_body=fake_router)
         self.assertEqual(test_constants.FAKE_ROUTER_FW_SEC_UUID, section_id)
 
-    def _test_nat_rule_create(self, nsx_version, add_bypas_arg):
+    def _test_nat_rule_create(self, nsx_version, add_bypas_arg=True,
+                              action='SNAT', expect_failure=False):
         router = self.get_mocked_resource()
-        action = 'SNAT'
         translated_net = '1.1.1.1'
         priority = 10
 
@@ -679,11 +679,18 @@ class LogicalRouterTestCase(BaseTestResource):
         # Ignoring 'bypass_firewall' with version 1.1
         with mock.patch("vmware_nsxlib.v3.NsxLib.get_version",
                         return_value=nsx_version):
-            router.add_nat_rule(test_constants.FAKE_ROUTER_UUID,
-                                action=action,
-                                translated_network=translated_net,
-                                rule_priority=priority,
-                                bypass_firewall=False)
+            try:
+                router.add_nat_rule(test_constants.FAKE_ROUTER_UUID,
+                                    action=action,
+                                    translated_network=translated_net,
+                                    rule_priority=priority,
+                                    bypass_firewall=False)
+            except exceptions.InvalidInput as e:
+                if expect_failure:
+                    return
+                else:
+                    self.fail("Failed to create NAT rule: %s", e)
+
             test_client.assert_json_call(
                 'post', router,
                 ('https://1.2.3.4/api/v1/logical-routers/%s/nat/rules' %
@@ -693,11 +700,25 @@ class LogicalRouterTestCase(BaseTestResource):
 
     def test_nat_rule_create_v1(self):
         # Ignoring 'bypass_firewall' with version 1.1
-        self._test_nat_rule_create('1.1.0', False)
+        self._test_nat_rule_create('1.1.0', add_bypas_arg=False)
 
     def test_nat_rule_create_v2(self):
         # Sending 'bypass_firewall' with version 1.1
-        self._test_nat_rule_create('2.0.0', True)
+        self._test_nat_rule_create('2.0.0')
+
+    def test_nat_rule_create_v22_NO_DNAT(self):
+        # NO_DNAT is supported from 2.2 & up
+        self._test_nat_rule_create('2.2.0', action='NO_DNAT')
+
+    def test_nat_rule_create_v2_NO_DNAT(self):
+        # NO_DNAT is supported from 2.2 & up
+        self._test_nat_rule_create('2.0.0', action='NO_DNAT',
+                                   expect_failure=True)
+
+    def test_nat_rule_create_invalid(self):
+        # NO_DNAT is supported from 2.2 & up
+        self._test_nat_rule_create('2.0.0', action='INVALID',
+                                   expect_failure=True)
 
     def test_nat_rule_list(self):
         router = self.get_mocked_resource()

vmware_nsxlib/v3/__init__.py

@@ -322,7 +322,8 @@ class NsxLib(NsxLibBase):
                 feature == nsx_constants.FEATURE_ON_BEHALF_OF or
                 feature == nsx_constants.FEATURE_RATE_LIMIT or
                 feature == nsx_constants.FEATURE_TRUNK_VLAN or
-                feature == nsx_constants.FEATURE_ROUTER_TRANSPORT_ZONE):
+                feature == nsx_constants.FEATURE_ROUTER_TRANSPORT_ZONE or
+                feature == nsx_constants.FEATURE_NO_DNAT_NO_SNAT):
                 return True
 
         if (version.LooseVersion(self.get_version()) >=

vmware_nsxlib/v3/core_resources.py

@@ -512,6 +512,20 @@ class NsxLibLogicalRouter(utils.NsxLibApiBase):
                                        'res': resource,
                                        'values': kwargs})
 
+    def _validate_nat_rule_action(self, action):
+        if not action:
+            return
+        if action in ['SNAT', 'DNAT', 'NO_NAT', 'REFLEXIVE']:
+            # legal values for all NSX versions
+            return
+        if (action not in ['NO_SNAT', 'NO_DNAT'] or (
+            self.nsxlib and not self.nsxlib.feature_supported(
+                nsx_constants.FEATURE_NO_DNAT_NO_SNAT))):
+            raise exceptions.InvalidInput(
+                operation="Create/Update NAT rule",
+                arg_val=action,
+                arg_name='action')
+
     def add_nat_rule(self, logical_router_id, action, translated_network,
                      source_net=None, dest_net=None,
                      enabled=True, rule_priority=None,
@@ -519,6 +533,7 @@ class NsxLibLogicalRouter(utils.NsxLibApiBase):
                      match_resource_type=None,
                      bypass_firewall=True,
                      tags=None):
+        self._validate_nat_rule_action(action)
         resource = 'logical-routers/%s/nat/rules' % logical_router_id
         body = {'action': action,
                 'enabled': enabled,
@@ -595,6 +610,8 @@ class NsxLibLogicalRouter(utils.NsxLibApiBase):
         return self.client.list(resource)
 
     def update_nat_rule(self, logical_router_id, nat_rule_id, **kwargs):
+        if 'action' in kwargs:
+            self._validate_nat_rule_action(kwargs['action'])
         resource = 'logical-routers/%s/nat/rules/%s' % (
             logical_router_id, nat_rule_id)
         return self._update_resource(resource, kwargs, retry=True)

vmware_nsxlib/v3/nsx_constants.py

@@ -141,3 +141,4 @@ FEATURE_IPSEC_VPN = 'IPSec VPN'
 FEATURE_ON_BEHALF_OF = 'On Behalf Of'
 FEATURE_TRUNK_VLAN = 'Trunk Vlan'
 FEATURE_ROUTER_TRANSPORT_ZONE = 'Router Transport Zone'
+FEATURE_NO_DNAT_NO_SNAT = 'No DNAT/No SNAT'