separate new and dirty queues

1 files changed, 20 insertions, 6 deletions

diff --git a/src/leap/mail/messageflow.py b/src/leap/mail/messageflow.py
index 80121c8..c8f224c 100644
--- a/src/leap/mail/messageflow.py
+++ b/src/leap/mail/messageflow.py
@@ -49,7 +49,7 @@ class IMessageProducer(Interface):
     entities.
     """
 
-    def push(self, item):
+    def push(self, item, state=None):
         """
         Push a new item in the queue.
         """
@@ -101,6 +101,10 @@ class MessageProducer(object):
     # and consumption is not likely (?) to consume huge amounts of memory in
     # our current settings, so the need to pause the stream is not urgent now.
 
+    # TODO use enum
+    STATE_NEW = 1
+    STATE_DIRTY = 2
+
     def __init__(self, consumer, queue=Queue.Queue, period=1):
         """
         Initializes the MessageProducer
@@ -115,7 +119,8 @@ class MessageProducer(object):
         # it should implement a `consume` method
         self._consumer = consumer
 
-        self._queue = queue()
+        self._queue_new = queue()
+        self._queue_dirty = queue()
         self._period = period
 
         self._loop = LoopingCall(self._check_for_new)
@@ -130,7 +135,7 @@ class MessageProducer(object):
         If the queue is found empty, the loop is stopped. It will be started
         again after the addition of new items.
         """
-        self._consumer.consume(self._queue)
+        self._consumer.consume((self._queue_new, self._queue_dirty))
         if self.is_queue_empty():
             self.stop()
 
@@ -138,11 +143,13 @@ class MessageProducer(object):
         """
         Return True if queue is empty, False otherwise.
         """
-        return self._queue.empty()
+        new = self._queue_new
+        dirty = self._queue_dirty
+        return new.empty() and dirty.empty()
 
     # public methods: IMessageProducer
 
-    def push(self, item):
+    def push(self, item, state=None):
         """
         Push a new item in the queue.
 
@@ -150,7 +157,14 @@ class MessageProducer(object):
         """
         # XXX this might raise if the queue does not accept any new
         # items. what to do then?
-        self._queue.put(item)
+        queue = self._queue_new
+
+        if state == self.STATE_NEW:
+            queue = self._queue_new
+        if state == self.STATE_DIRTY:
+            queue = self._queue_dirty
+
+        queue.put(item)
         self.start()
 
     def start(self):