1 files changed, 34 insertions, 1 deletions
diff --git a/python/pgq/consumer.py b/python/pgq/consumer.py
index 294519d8..d109f749 100644
--- a/python/pgq/consumer.py
+++ b/python/pgq/consumer.py
@@ -4,17 +4,47 @@
 """
 
 from pgq.baseconsumer import BaseConsumer, BaseBatchWalker
-from pgq.event import *
+from pgq.event import Event
 
 __all__ = ['Consumer']
 
 
+# Event status codes
+EV_UNTAGGED = -1
+EV_RETRY = 0
+EV_DONE = 1
+
+
+class RetriableEvent(Event):
+    """Event which can be retryed
+
+    Consumer is supposed to tag them after processing.
+    """
+
+    __slots__ = ('_status', )
+
+    def __init__(self, queue_name, row):
+        super(RetriableEvent, self).__init__(self, queue_name, row)
+        self._status = EV_DONE
+
+    def tag_done(self):
+        self._status = EV_DONE
+
+    def get_status(self):
+        return self._status
+
+    def tag_retry(self, retry_time = 60):
+        self._status = EV_RETRY
+        self.retry_time = retry_time
+
+
 class RetriableWalkerEvent(RetriableEvent):
     """Redirects status flags to RetriableBatchWalker.
 
     That way event data can be gc'd immediately and
     tag_done() events don't need to be remembered.
     """
+    __slots__ = ('_walker', )
     def __init__(self, walker, queue, row):
         Event.__init__(self, queue, row)
         self._walker = walker
@@ -60,6 +90,9 @@ class Consumer(BaseConsumer):
 
     _batch_walker_class = RetriableBatchWalker
 
+    def _make_event(self, queue_name, row):
+        return RetriableEvent(queue_name, row)
+
     def _flush_retry(self, curs, batch_id, list):
         """Tag retry events."""