Merge "Remove unneeded call to conductor in network interface" into stable/havana

2 files changed, 26 insertions, 35 deletions

diff --git a/nova/network/neutronv2/api.py b/nova/network/neutronv2/api.py
index 61476ae02c..3efe77ec6b 100644
--- a/nova/network/neutronv2/api.py
+++ b/nova/network/neutronv2/api.py
@@ -20,6 +20,7 @@ import time
 
 from neutronclient.common import exceptions as neutron_client_exc
 from oslo.config import cfg
+import six
 
 from nova.compute import flavors
 from nova import conductor
@@ -991,12 +992,15 @@ class API(base.Base):
         data = client.list_ports(**search_opts)
         ports = data.get('ports', [])
         nw_info = network_model.NetworkInfo()
+
+        # Unfortunately, this is sometimes in unicode and sometimes not
+        if isinstance(instance['info_cache']['network_info'], six.text_type):
+            ifaces = jsonutils.loads(instance['info_cache']['network_info'])
+        else:
+            ifaces = instance['info_cache']['network_info']
+
         if networks is None:
-            # retrieve networks from info_cache to get correct nic order
-            network_cache = self.conductor_api.instance_get_by_uuid(
-                context, instance['uuid'])['info_cache']['network_info']
-            network_cache = jsonutils.loads(network_cache)
-            net_ids = [iface['network']['id'] for iface in network_cache]
+            net_ids = [iface['network']['id'] for iface in ifaces]
             networks = self._get_available_networks(context,
                                                     instance['project_id'],
                                                     net_ids)
@@ -1004,14 +1008,6 @@ class API(base.Base):
         # ensure ports are in preferred network order, and filter out
         # those not attached to one of the provided list of networks
         else:
-
-            # Unfortunately, this is sometimes in unicode and sometimes not
-            if isinstance(instance['info_cache']['network_info'], unicode):
-                ifaces = jsonutils.loads(
-                    instance['info_cache']['network_info'])
-            else:
-                ifaces = instance['info_cache']['network_info']
-
             # Include existing interfaces so they are not removed from the db.
             # Needed when interfaces are added to existing instances.
             for iface in ifaces:
diff --git a/nova/tests/network/test_neutronv2.py b/nova/tests/network/test_neutronv2.py
index 04ec25de70..a6d150b5c6 100644
--- a/nova/tests/network/test_neutronv2.py
+++ b/nova/tests/network/test_neutronv2.py
@@ -15,12 +15,14 @@
 #
 # vim: tabstop=4 shiftwidth=4 softtabstop=4
 
+import copy
 import uuid
 
 import mox
 from neutronclient.common import exceptions
 from neutronclient.v2_0 import client
 from oslo.config import cfg
+import six
 
 from nova.compute import flavors
 from nova.conductor import api as conductor_api
@@ -401,18 +403,14 @@ class TestNeutronv2Base(test.TestCase):
                                           self.instance['uuid'],
                                           mox.IgnoreArg())
         port_data = number == 1 and self.port_data1 or self.port_data2
-        nets = number == 1 and self.nets1 or self.nets2
-        self.mox.StubOutWithMock(conductor_api.API,
-                                 'instance_get_by_uuid')
-
         net_info_cache = []
         for port in port_data:
             net_info_cache.append({"network": {"id": port['network_id']}})
-        info_cache = {'info_cache': {'network_info':
-                                     jsonutils.dumps(net_info_cache)}}
+        instance = copy.copy(self.instance)
+        # This line here does not wrap net_info_cache in jsonutils.dumps()
+        # intentionally to test the other code path when it's not unicode.
+        instance['info_cache'] = {'network_info': net_info_cache}
 
-        api.conductor_api.instance_get_by_uuid(
-            mox.IgnoreArg(), mox.IgnoreArg()).AndReturn(info_cache)
         self.moxed_client.list_ports(
             tenant_id=self.instance['project_id'],
             device_id=self.instance['uuid']).AndReturn(
@@ -439,7 +437,7 @@ class TestNeutronv2Base(test.TestCase):
                 device_owner='network:dhcp').AndReturn(
                     {'ports': []})
         self.mox.ReplayAll()
-        nw_inf = api.get_instance_nw_info(self.context, self.instance)
+        nw_inf = api.get_instance_nw_info(self.context, instance)
         for i in xrange(0, number):
             self._verify_nw_info(nw_inf, i)
 
@@ -579,16 +577,15 @@ class TestNeutronv2(TestNeutronv2Base):
         net_info_cache = []
         for port in self.port_data3:
             net_info_cache.append({"network": {"id": port['network_id']}})
-        info_cache = {'info_cache': {'network_info':
-                                     jsonutils.dumps(net_info_cache)}}
-
-        api.conductor_api.instance_get_by_uuid(
-            mox.IgnoreArg(), mox.IgnoreArg()).AndReturn(info_cache)
+        instance = copy.copy(self.instance)
+        instance['info_cache'] = {'network_info':
+                                  six.text_type(
+                                    jsonutils.dumps(net_info_cache))}
 
         self.mox.ReplayAll()
 
         nw_inf = api.get_instance_nw_info(self.context,
-                                          self.instance)
+                                          instance)
 
         id_suffix = 3
         self.assertEquals(0, len(nw_inf.fixed_ips()))
@@ -890,17 +887,15 @@ class TestNeutronv2(TestNeutronv2Base):
         port_data = number == 1 and self.port_data1 or self.port_data2
         nets = number == 1 and self.nets1 or self.nets2
         self.moxed_client.delete_port(port_data[0]['id'])
-        self.mox.StubOutWithMock(conductor_api.API,
-                                 'instance_get_by_uuid')
 
         net_info_cache = []
         for port in port_data:
             net_info_cache.append({"network": {"id": port['network_id']}})
-        info_cache = {'info_cache': {'network_info':
-                                     jsonutils.dumps(net_info_cache)}}
+        instance = copy.copy(self.instance)
+        instance['info_cache'] = {'network_info':
+                                  six.text_type(
+                                    jsonutils.dumps(net_info_cache))}
         api = neutronapi.API()
-        api.conductor_api.instance_get_by_uuid(
-            mox.IgnoreArg(), mox.IgnoreArg()).AndReturn(info_cache)
         neutronv2.get_client(mox.IgnoreArg(), admin=True).AndReturn(
             self.moxed_client)
         self.moxed_client.list_ports(
@@ -924,7 +919,7 @@ class TestNeutronv2(TestNeutronv2Base):
 
         self.mox.ReplayAll()
 
-        nwinfo = api.deallocate_port_for_instance(self.context, self.instance,
+        nwinfo = api.deallocate_port_for_instance(self.context, instance,
                                                   port_data[0]['id'])
         self.assertEqual(len(nwinfo), len(port_data[1:]))
         if len(port_data) > 1: