def _handle_BarrierIn(self, barrier):
# yeah. barrier in. time to sync some of these flows
if barrier.xid in self._pending_barrier_to_ops:
added = []
removed = []
#print "barrier in: pending for barrier: %d: %s" % (barrier.xid,
# self._pending_barrier_to_ops[barrier.xid])
for op in self._pending_barrier_to_ops[barrier.xid]:
(command, entry) = op
if (command == OFSyncFlowTable.ADD):
self.flow_table.add_entry(entry)
added.append(entry)
else:
removed.extend(
self.flow_table.remove_matching_entries(
entry.match,
entry.priority,
strict=command == OFSyncFlowTable.REMOVE_STRICT))
#print "op: %s, pending: %s" % (op, self._pending)
if op in self._pending: self._pending.remove(op)
self._pending_op_to_barrier.pop(op, None)
del self._pending_barrier_to_ops[barrier.xid]
self.raiseEvent(FlowTableModification(added=added,
removed=removed))
return EventHalt
else:
return EventContinue
def _handle_FlowRemoved (self, event):
"""
process a flow removed event -- remove the matching flow from the table.
"""
flow_removed = event.ofp
for entry in self.flow_table.entries:
if (flow_removed.match == entry.match
and flow_removed.priority == entry.priority):
self.flow_table.remove_entry(entry)
self.raiseEvent(FlowTableModification(removed=[entry]))
return EventHalt
return EventContinue