Merge "Fix NVP plugin to send notifications for gateway-less subnets"

neutron/plugins/nicira/dhcp_meta/rpc.py

@@ -77,11 +77,7 @@ def handle_port_dhcp_access(plugin, context, port_data, action):
     if active_port:
         subnet_id = port_data['fixed_ips'][0]['subnet_id']
         subnet = plugin.get_subnet(context, subnet_id)
-        if (cfg.CONF.dhcp_agent_notification and subnet.get('gateway_ip')
-            or action == 'delete_port'):
-            dhcp_notifier = dhcp_rpc_agent_api.DhcpAgentNotifyAPI()
-            dhcp_notifier.notify(
-                context, {'subnet': subnet}, 'subnet.update.end')
+        _notify_rpc_agent(context, {'subnet': subnet}, 'subnet.update.end')
 
 
 def handle_port_metadata_access(context, port, is_delete=False):
@@ -205,12 +201,8 @@ def _create_metadata_access_network(plugin, context, router_id):
         # as it will be removed with the network
         plugin.delete_network(context, meta_net['id'])
 
-    if cfg.CONF.dhcp_agent_notification:
-        # We need to send a notification to the dhcp agent in
-        # order to start the metadata agent proxy
-        dhcp_notifier = dhcp_rpc_agent_api.DhcpAgentNotifyAPI()
-        dhcp_notifier.notify(context, {'network': meta_net},
-                             'network.create.end')
+    # Tell to start the metadata agent proxy
+    _notify_rpc_agent(context, {'network': meta_net}, 'network.create.end')
 
 
 def _destroy_metadata_access_network(plugin, context, router_id, ports):
@@ -233,11 +225,12 @@ def _destroy_metadata_access_network(plugin, context, router_id, ports):
         # must re-add the router interface
         plugin.add_router_interface(context, router_id,
                                     {'subnet_id': meta_sub_id})
+     # Tell to stop the metadata agent proxy
+    _notify_rpc_agent(
+        context, {'network': {'id': meta_net_id}}, 'network.delete.end')
 
+
+def _notify_rpc_agent(context, payload, event):
     if cfg.CONF.dhcp_agent_notification:
-        # We need to send a notification to the dhcp agent in
-        # order to stop the metadata agent proxy
         dhcp_notifier = dhcp_rpc_agent_api.DhcpAgentNotifyAPI()
-        dhcp_notifier.notify(context,
-                             {'network': {'id': meta_net_id}},
-                             'network.delete.end')
+        dhcp_notifier.notify(context, payload, event)

neutron/tests/unit/nicira/test_agent_scheduler.py

@@ -14,7 +14,9 @@
 #    under the License.
 
 import mock
+from oslo.config import cfg
 
+from neutron.common import constants
 from neutron.common.test_lib import test_config
 from neutron.plugins.nicira.common import sync
 from neutron.tests.unit.nicira import fake_nvpapiclient
@@ -50,6 +52,7 @@ class NVPDhcpAgentNotifierTestCase(test_base.OvsDhcpAgentNotifierTestCase):
         self.addCleanup(self.fc.reset_all)
         self.addCleanup(patch_sync.stop)
         self.addCleanup(self.mock_nvpapi.stop)
+        self.addCleanup(cfg.CONF.reset)
 
     def _notification_mocks(self, hosts, mock_dhcp, net, subnet, port):
         host_calls = {}
@@ -75,3 +78,23 @@ class NVPDhcpAgentNotifierTestCase(test_base.OvsDhcpAgentNotifierTestCase):
                     topic='dhcp_agent.' + host)]
             host_calls[host] = expected_calls
         return host_calls
+
+    def _test_gateway_subnet_notification(self, gateway='10.0.0.1'):
+        cfg.CONF.set_override('metadata_mode', 'dhcp_host_route', 'NVP')
+        hosts = ['hosta']
+        [mock_dhcp, net, subnet, port] = self._network_port_create(
+            hosts, gateway=gateway, owner=constants.DEVICE_OWNER_DHCP)
+        found = False
+        for call, topic in mock_dhcp.call_args_list:
+            method = call[1]['method']
+            if method == 'subnet_update_end':
+                found = True
+                break
+        self.assertTrue(found)
+        self.assertEqual(subnet['subnet']['gateway_ip'], gateway)
+
+    def test_gatewayless_subnet_notification(self):
+        self._test_gateway_subnet_notification(gateway=None)
+
+    def test_subnet_with_gateway_notification(self):
+        self._test_gateway_subnet_notification()

neutron/tests/unit/openvswitch/test_agent_scheduler.py

@@ -1018,7 +1018,8 @@ class OvsDhcpAgentNotifierTestCase(OvsAgentSchedulerTestCaseBase):
                     payload={'admin_state_up': False}),
                 topic='dhcp_agent.' + DHCP_HOSTA)
 
-    def _network_port_create(self, hosts):
+    def _network_port_create(
+        self, hosts, gateway=attributes.ATTR_NOT_SPECIFIED, owner=None):
         for host in hosts:
             self._register_one_agent_state(
                 {'binary': 'neutron-dhcp-agent',
@@ -1030,9 +1031,17 @@ class OvsDhcpAgentNotifierTestCase(OvsAgentSchedulerTestCaseBase):
         with mock.patch.object(self.dhcp_notifier, 'cast') as mock_dhcp:
             with self.network(do_delete=False) as net1:
                 with self.subnet(network=net1,
+                                 gateway_ip=gateway,
                                  do_delete=False) as subnet1:
-                    with self.port(subnet=subnet1, no_delete=True) as port:
-                        return [mock_dhcp, net1, subnet1, port]
+                    if owner:
+                        with self.port(subnet=subnet1,
+                                       no_delete=True,
+                                       device_owner=owner) as port:
+                            return [mock_dhcp, net1, subnet1, port]
+                    else:
+                        with self.port(subnet=subnet1,
+                                       no_delete=True) as port:
+                            return [mock_dhcp, net1, subnet1, port]
 
     def _notification_mocks(self, hosts, mock_dhcp, net, subnet, port):
         host_calls = {}