Fix issue with neutron_api tests

There is a potential race condition when running
the unit tests with how eventlet is loaded. This
patch changes the neutron api implementation to use
GreenThreadPoolExecutor to make sure that
it does not fail depending on when eventlet applies
it's monkey patching.

Change-Id: I051d3ad8cd5af9b52d90dc28ebe99a3f0c8a17f2

designate/network_api/neutron.py

@@ -15,6 +15,7 @@
 #
 # Copied partially from nova
 import concurrent.futures
+import futurist
 from neutronclient.common import exceptions as neutron_exceptions
 from neutronclient.v2_0 import client as clientv20
 from oslo_config import cfg
@@ -66,7 +67,7 @@ def list_floatingips(self, context, region=None):
         )
 
         floating_ips = []
-        with concurrent.futures.ThreadPoolExecutor(max_workers=5) as executor:
+        with futurist.GreenThreadPoolExecutor(max_workers=5) as executor:
             executors = [
                 executor.submit(
                     self._get_floating_ips,

designate/tests/unit/network_api/test_neutron.py

@@ -0,0 +1,140 @@
+# Copyright 2013 Hewlett-Packard Development Company, L.P.
+#
+# Author: Endre Karlson <endre.karlson@hpe.com>
+#
+# Licensed under the Apache License, Version 2.0 (the "License"); you may
+# not use this file except in compliance with the License. You may obtain
+# a copy of the License at
+#
+#      http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
+# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
+# License for the specific language governing permissions and limitations
+# under the License.
+import mock
+from neutronclient.common import exceptions as neutron_exceptions
+from neutronclient.v2_0 import client as clientv20
+from oslo_config import cfg
+from oslo_config import fixture as cfg_fixture
+import oslotest.base
+
+from designate import context
+from designate import exceptions
+from designate.network_api import get_network_api
+from designate.network_api import neutron
+
+CONF = cfg.CONF
+
+
+class NeutronNetworkAPITest(oslotest.base.BaseTestCase):
+    def setUp(self):
+        super(NeutronNetworkAPITest, self).setUp()
+        self.useFixture(cfg_fixture.Config(CONF))
+
+        CONF.set_override(
+            'endpoints', ['RegionOne|http://localhost:9696'],
+            'network_api:neutron'
+        )
+
+        self.api = get_network_api('neutron')
+        self.context = context.DesignateContext(
+            user_id='12345', project_id='54321',
+        )
+
+    @mock.patch.object(clientv20, 'Client')
+    def test_get_client(self, mock_client):
+        neutron.get_client(self.context, 'http://localhost:9696')
+
+        kwargs = mock_client.call_args.kwargs
+
+        self.assertIn('endpoint_url', kwargs)
+        self.assertIn('timeout', kwargs)
+        self.assertIn('insecure', kwargs)
+        self.assertIn('ca_cert', kwargs)
+
+        self.assertNotIn('token', kwargs)
+        self.assertNotIn('username', kwargs)
+
+        self.assertEqual('http://localhost:9696', kwargs['endpoint_url'])
+
+    @mock.patch.object(clientv20, 'Client')
+    def test_get_client_using_token(self, mock_client):
+        self.context = context.DesignateContext(
+            user_id='12345', project_id='54321', auth_token='token',
+        )
+
+        neutron.get_client(self.context, 'http://localhost:9696')
+
+        kwargs = mock_client.call_args.kwargs
+
+        self.assertIn('token', kwargs)
+        self.assertIn('auth_strategy', kwargs)
+        self.assertNotIn('username', kwargs)
+
+        self.assertEqual('http://localhost:9696', kwargs['endpoint_url'])
+        self.assertEqual(kwargs['token'], self.context.auth_token)
+
+    @mock.patch.object(clientv20, 'Client')
+    def test_get_client_using_admin(self, mock_client):
+        CONF.set_override(
+            'admin_username', 'test',
+            'network_api:neutron'
+        )
+
+        neutron.get_client(self.context, 'http://localhost:9696')
+
+        kwargs = mock_client.call_args.kwargs
+
+        self.assertIn('auth_strategy', kwargs)
+        self.assertIn('username', kwargs)
+        self.assertIn('project_name', kwargs)
+        self.assertIn('password', kwargs)
+        self.assertIn('auth_url', kwargs)
+        self.assertNotIn('token', kwargs)
+
+        self.assertEqual('http://localhost:9696', kwargs['endpoint_url'])
+        self.assertEqual(
+            kwargs['username'], CONF['network_api:neutron'].admin_username
+        )
+
+    @mock.patch.object(neutron, 'get_client')
+    def test_list_floatingips(self, get_client):
+        driver = mock.Mock()
+        driver.list_floatingips.return_value = {'floatingips': [
+            {
+                'id': '123',
+                'floating_ip_address': '192.168.0.100',
+                'region': 'RegionOne'
+            },
+            {
+                'id': '456',
+                'floating_ip_address': '192.168.0.200',
+                'region': 'RegionOne'
+            },
+        ]}
+        get_client.return_value = driver
+
+        self.assertEqual(2, len(self.api.list_floatingips(self.context)))
+
+    @mock.patch.object(neutron, 'get_client')
+    def test_list_floatingips_unauthorized(self, get_client):
+        driver = mock.Mock()
+        driver.list_floatingips.side_effect = neutron_exceptions.Unauthorized
+        get_client.return_value = driver
+
+        self.assertEqual(0, len(self.api.list_floatingips(self.context)))
+
+    @mock.patch.object(neutron, 'get_client')
+    def test_list_floatingips_communication_failure(self, get_client):
+        driver = mock.Mock()
+        driver.list_floatingips.side_effect = (
+            neutron_exceptions.NeutronException
+        )
+        get_client.return_value = driver
+
+        self.assertRaises(
+            exceptions.NeutronCommunicationFailure,
+            self.api.list_floatingips, self.context
+        )