Mailman/queue/sbcache.py

   1 # Copyright (C) 2001-2007 by the Free Software Foundation, Inc.
   2 #
   3 # This program is free software; you can redistribute it and/or
   4 # modify it under the terms of the GNU General Public License
   5 # as published by the Free Software Foundation; either version 2
   6 # of the License, or (at your option) any later version.
   7 #
   8 # This program is distributed in the hope that it will be useful,
   9 # but WITHOUT ANY WARRANTY; without even the implied warranty of
  10 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  11 # GNU General Public License for more details.
  12 #
  13 # You should have received a copy of the GNU General Public License
  14 # along with this program; if not, write to the Free Software
  15 # Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301,
  16 # USA.
  17
  18 """A factory of Switchboards with caching."""
  19
  20 from Mailman.Queue.Switchboard import Switchboard
  21
  22 # a mapping from queue directory to Switchboard instance
  23 _sbcache = {}
  24
  25 def get_switchboard(qdir):
  26     switchboard = _sbcache.setdefault(qdir, Switchboard(qdir))
  27     return switchboard