Extends the exception.wrap_exception decorator to optionally send an update to the notification system in the event of a failure.

nova/notifier/api.py

@@ -17,7 +17,9 @@ import uuid
 
 from nova import flags
 from nova import utils
+from nova import log as logging
 
+LOG = logging.getLogger('nova.exception')
 
 FLAGS = flags.FLAGS
 
@@ -37,6 +39,12 @@ class BadPriorityException(Exception):
     pass
 
 
+def publisher_id(service, host=None):
+    if not host:
+        host = FLAGS.host
+    return "%s.%s" % (service, host)
+
+
 def notify(publisher_id, event_type, priority, payload):
     """
     Sends a notification using the specified driver
@@ -79,4 +87,8 @@ def notify(publisher_id, event_type, priority, payload):
                    priority=priority,
                    payload=payload,
                    timestamp=str(utils.utcnow()))
+    try:
         driver.notify(msg)
+    except Exception, e:
+        LOG.exception(_("Problem '%(e)s' attempting to "
+                        "send to notification system." % locals()))

nova/rpc.py

@@ -219,7 +219,7 @@ class AdapterConsumer(Consumer):
             return
         self.pool.spawn_n(self._process_data, msg_id, ctxt, method, args)
 
-    @exception.wrap_exception
+    @exception.wrap_exception()
     def _process_data(self, msg_id, ctxt, method, args):
         """Thread that maigcally looks for a method on the proxy
         object and calls it.