~mailman-coders/mailman/2.1

# Copyright (C) 2001,2002 by the Free Software Foundation, Inc.

#

# This program is free software; you can redistribute it and/or

# modify it under the terms of the GNU General Public License

# as published by the Free Software Foundation; either version 2

# of the License, or (at your option) any later version.

#

# This program is distributed in the hope that it will be useful,

# but WITHOUT ANY WARRANTY; without even the implied warranty of

# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the

# GNU General Public License for more details.

#

# You should have received a copy of the GNU General Public License

# along with this program; if not, write to the Free Software

# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.

"""A factory of Switchboards with caching."""

from Mailman.Queue.Switchboard import Switchboard

# a mapping from queue directory to Switchboard instance

_sbcache = {}

def get_switchboard(qdir):

    switchboard = _sbcache.setdefault(qdir, Switchboard(qdir))

    return switchboard