More unit tests and rabbit hooks

nova/notifier/rabbit_notifier.py

@@ -13,12 +13,25 @@
 #    License for the specific language governing permissions and limitations
 #    under the License.
 
+import json
+
+import nova.context
+
+from nova import flags
+from nova import rpc
+
+FLAGS = flags.FLAGS
+
+flags.DEFINE_string('notification_topic', 'notifications', 
+                    'RabbitMQ topic used for Nova notifications')
+
 class RabbitNotifier(object):
     """Sends notifications to a specific RabbitMQ server and topic"""
+    pass
 
-    def __init__(self):
-        pass
-
-    def notify(self, model):
+    def notify(self, event_name, model):
         """Sends a notification to the RabbitMQ"""
-        pass
+        context = nova.context.get_admin_context()
+        topic = FLAGS.notification_topic
+        msg = { 'event_name': event_name, 'model': model.__dict__ }
+        rpc.cast(context, topic, json.dumps(msg))