OVS: update status according to admin_state_up

Fixes bug 1099099

In addition to this the code does the following:
1. validates if the port exists on the OVS when a port update event takes
   place
2. when a port is created the initial state is set as 'DOWN'. this is
   later updated by the agent when it is detected as up

Change-Id: I917d4b5aa8df7395fcaa841d77083546478739d2

quantum/plugins/openvswitch/agent/ovs_quantum_agent.py

@@ -199,13 +199,24 @@ class OVSQuantumAgent(object):
     def port_update(self, context, **kwargs):
         LOG.debug(_("port_update received"))
         port = kwargs.get('port')
+        # Validate that port is on OVS
+        vif_port = self.int_br.get_vif_port_by_id(port['id'])
+        if not vif_port:
+            return
         network_type = kwargs.get('network_type')
         segmentation_id = kwargs.get('segmentation_id')
         physical_network = kwargs.get('physical_network')
-        vif_port = self.int_br.get_vif_port_by_id(port['id'])
         self.treat_vif_port(vif_port, port['id'], port['network_id'],
                             network_type, physical_network,
                             segmentation_id, port['admin_state_up'])
+        if port['admin_state_up']:
+            # update plugin about port status
+            self.plugin_rpc.update_device_up(self.context, port['id'],
+                                             self.agent_id)
+        else:
+            # update plugin about port status
+            self.agent.plugin_rpc.update_device_down(self.context, port['id'],
+                                                     self.agent.agent_id)
 
     def tunnel_update(self, context, **kwargs):
         LOG.debug(_("tunnel_update received"))

quantum/plugins/openvswitch/ovs_quantum_plugin.py

@@ -81,8 +81,10 @@ class OVSRpcCallbacks(dhcp_rpc_base.DhcpRpcCallbackMixin,
                      'network_type': binding.network_type,
                      'segmentation_id': binding.segmentation_id,
                      'physical_network': binding.physical_network}
-            # Set the port status to UP
-            ovs_db_v2.set_port_status(port['id'], q_const.PORT_STATUS_ACTIVE)
+            new_status = (q_const.PORT_STATUS_ACTIVE if port['admin_state_up']
+                          else q_const.PORT_STATUS_DOWN)
+            if port['status'] != new_status:
+                ovs_db_v2.set_port_status(port['id'], new_status)
         else:
             entry = {'device': device}
             LOG.debug(_("%s can not be found in database"), device)
@@ -99,14 +101,29 @@ class OVSRpcCallbacks(dhcp_rpc_base.DhcpRpcCallbackMixin,
         if port:
             entry = {'device': device,
                      'exists': True}
-            # Set port status to DOWN
-            ovs_db_v2.set_port_status(port['id'], q_const.PORT_STATUS_DOWN)
+            if port['status'] != q_const.PORT_STATUS_DOWN:
+                # Set port status to DOWN
+                ovs_db_v2.set_port_status(port['id'], q_const.PORT_STATUS_DOWN)
         else:
             entry = {'device': device,
                      'exists': False}
             LOG.debug(_("%s can not be found in database"), device)
         return entry
 
+    def update_device_up(self, rpc_context, **kwargs):
+        """Device is up on agent"""
+        agent_id = kwargs.get('agent_id')
+        device = kwargs.get('device')
+        LOG.debug(_("Device %(device)s up on %(agent_id)s"),
+                  locals())
+        port = ovs_db_v2.get_port(device)
+        if port:
+            if port['status'] != q_const.PORT_STATUS_ACTIVE:
+                ovs_db_v2.set_port_status(port['id'],
+                                          q_const.PORT_STATUS_ACTIVE)
+        else:
+            LOG.debug(_("%s can not be found in database"), device)
+
     def tunnel_sync(self, rpc_context, **kwargs):
         """Update new tunnel.
 
@@ -502,6 +519,8 @@ class OVSQuantumPluginV2(db_base_plugin_v2.QuantumDbPluginV2,
         return port
 
     def create_port(self, context, port):
+        # Set port status as 'DOWN'. This will be updated by agent
+        port['port']['status'] = q_const.PORT_STATUS_DOWN
         port = super(OVSQuantumPluginV2, self).create_port(context, port)
         return self._extend_port_dict_binding(context, port)
 

quantum/tests/unit/cisco/test_network_plugin.py

@@ -38,6 +38,7 @@ class CiscoNetworkPluginV2TestCase(test_db_plugin.QuantumDbPluginV2TestCase):
         with mock.patch.object(network_db_v2,
                                'initialize', new=new_init):
             super(CiscoNetworkPluginV2TestCase, self).setUp(self._plugin_name)
+        self.port_create_status = 'DOWN'
 
     def _get_plugin_ref(self):
         plugin_obj = QuantumManager.get_plugin()

quantum/tests/unit/openvswitch/test_openvswitch_plugin.py

@@ -25,6 +25,7 @@ class OpenvswitchPluginV2TestCase(test_plugin.QuantumDbPluginV2TestCase):
 
     def setUp(self):
         super(OpenvswitchPluginV2TestCase, self).setUp(self._plugin_name)
+        self.port_create_status = 'DOWN'
 
 
 class TestOpenvswitchBasicGet(test_plugin.TestBasicGet,
@@ -44,6 +45,11 @@ class TestOpenvswitchPortsV2(test_plugin.TestPortsV2,
     VIF_TYPE = portbindings.VIF_TYPE_OVS
     HAS_PORT_FILTER = False
 
+    def test_update_port_status_build(self):
+        with self.port() as port:
+            self.assertEqual(port['port']['status'], 'DOWN')
+            self.assertEqual(self.port_create_status, 'DOWN')
+
 
 class TestOpenvswitchNetworksV2(test_plugin.TestNetworksV2,
                                 OpenvswitchPluginV2TestCase):

quantum/tests/unit/openvswitch/test_ovs_rpcapi.py

@@ -108,3 +108,10 @@ class rpcApiTestCase(unittest2.TestCase):
         self._test_ovs_api(rpcapi, topics.PLUGIN,
                            'tunnel_sync', rpc_method='call',
                            tunnel_ip='fake_tunnel_ip')
+
+    def test_update_device_up(self):
+        rpcapi = agent_rpc.PluginApi(topics.PLUGIN)
+        self._test_ovs_api(rpcapi, topics.PLUGIN,
+                           'update_device_up', rpc_method='call',
+                           device='fake_device',
+                           agent_id='fake_agent_id')