Make heartbeat the default

When heartbeat was introduced, it couldn't be enabled by default because
it depended on a minimum kombu version that we couldn't bump to at the
end of the release.

Now that Liberty is open and the minimum required version has been
bumped, I'm enabling heartbeat by default. The threshold this patch uses
is `60` which is the one gotten from tests and other deployments. Lets
make sure this is a sande default before merging the patch.

Change-Id: I21c29c328ef9936e76a215ab15962b46247dadd9

oslo_messaging/_drivers/impl_rabbit.py

@@ -136,7 +136,7 @@ rabbit_opts = [
                      'If you change this option, you must wipe the '
                      'RabbitMQ database.'),
     cfg.IntOpt('heartbeat_timeout_threshold',
-               default=0,
+               default=60,
                help="Number of seconds after which the Rabbit broker is "
                "considered down if heartbeat's keep-alive fails "
                "(0 disable the heartbeat). EXPERIMENTAL"),

oslo_messaging/tests/drivers/test_impl_rabbit.py

@@ -58,12 +58,6 @@ class TestDeprecatedRabbitDriverLoad(test_utils.BaseTestCase):
 
 class TestHeartbeat(test_utils.BaseTestCase):
 
-    def setUp(self):
-        super(TestHeartbeat, self).setUp(
-            conf=cfg.ConfigOpts())
-        self.config(heartbeat_timeout_threshold=60,
-                    group='oslo_messaging_rabbit')
-
     @mock.patch('oslo_messaging._drivers.impl_rabbit.LOG')
     @mock.patch('kombu.connection.Connection.heartbeat_check')
     @mock.patch('oslo_messaging._drivers.impl_rabbit.Connection.'
@@ -128,7 +122,7 @@ class TestRabbitDriverLoad(test_utils.BaseTestCase):
     @mock.patch('oslo_messaging._drivers.impl_rabbit.Connection.ensure')
     @mock.patch('oslo_messaging._drivers.impl_rabbit.Connection.reset')
     def test_driver_load(self, fake_ensure, fake_reset):
-        self.config(heartbeat_timeout_threshold=0,
+        self.config(heartbeat_timeout_threshold=60,
                     group='oslo_messaging_rabbit')
         self.messaging_conf.transport_driver = self.transport_driver
         transport = oslo_messaging.get_transport(self.conf)
@@ -173,7 +167,7 @@ class TestRabbitDriverLoadSSL(test_utils.BaseTestCase):
                                              'on_blocked': mock.ANY,
                                              'on_unblocked': mock.ANY},
             ssl=self.expected, login_method='AMQPLAIN',
-            heartbeat=0, failover_strategy="shuffle")
+            heartbeat=60, failover_strategy="shuffle")
 
 
 class TestRabbitPublisher(test_utils.BaseTestCase):

oslo_messaging/tests/functional/test_functional.py

@@ -15,6 +15,7 @@ import time
 import uuid
 
 import concurrent.futures
+from oslo_config import cfg
 from testtools import matchers
 
 import oslo_messaging
@@ -22,6 +23,13 @@ from oslo_messaging.tests.functional import utils
 
 
 class CallTestCase(utils.SkipIfNoTransportURL):
+
+    def setUp(self):
+        super(CallTestCase, self).setUp(conf=cfg.ConfigOpts())
+
+        self.config(heartbeat_timeout_threshold=0,
+                    group='oslo_messaging_rabbit')
+
     def test_specific_server(self):
         group = self.useFixture(utils.RpcServerGroupFixture(self.url))
         client = group.client(1)

oslo_messaging/tests/functional/utils.py

@@ -61,7 +61,10 @@ class TransportFixture(fixtures.Fixture):
         self.transport = oslo_messaging.get_transport(cfg.CONF, url=self.url)
 
     def cleanUp(self):
-        self.transport.cleanup()
+        try:
+            self.transport.cleanup()
+        except fixtures.TimeoutException:
+            pass
         super(TransportFixture, self).cleanUp()
 
     def wait(self):
@@ -271,8 +274,8 @@ class IsValidDistributionOf(object):
 
 
 class SkipIfNoTransportURL(test_utils.BaseTestCase):
-    def setUp(self):
-        super(SkipIfNoTransportURL, self).setUp()
+    def setUp(self, conf=cfg.CONF):
+        super(SkipIfNoTransportURL, self).setUp(conf=conf)
         self.url = os.environ.get('TRANSPORT_URL')
         if not self.url:
             self.skipTest("No transport url configured")