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# Copyright (C) 2000,2001 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., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
"""Outgoing queue runner."""
import sys
import os
from Mailman import mm_cfg
from Mailman import Errors
from Mailman.Queue.Runner import Runner
class OutgoingRunner(Runner):
def __init__(self, slice=None, numslices=1, cachelists=1):
Runner.__init__(self, mm_cfg.OUTQUEUE_DIR,
slice, numslices, cachelists)
def _dispose(self, mlist, msg, msgdata):
# Fortunately, we do not need the list lock to do deliveries.
handler = mm_cfg.DELIVERY_MODULE
modname = 'Mailman.Handlers.' + handler
mod = __import__(modname)
func = getattr(sys.modules[modname], 'process')
try:
pid = os.getpid()
func(mlist, msg, msgdata)
# Failsafe -- a child may have leaked through.
if pid <> os.getpid():
syslog('error', 'child process leaked through: %s' % modname)
os._exit(1)
except Errors.SomeRecipientsFailed:
# The delivery module being used (SMTPDirect or Sendmail) failed
# to deliver the message to one or all of the recipients. Requeue
# the message so that delivery to those temporary failures are
# retried later.
#
# Consult and adjust some meager metrics that try to decide
# whether it's worth continuing to attempt delivery of this
# message.
now = time.time()
recips = msgdata['recips']
last_recip_count = msgdata.get('last_recip_count', 0)
deliver_until = msgdata.get('deliver_until', now)
if len(recips) == last_recip_count:
# We didn't make any progress.
if now > deliver_until:
# We won't attempt delivery any longer.
return 0
else:
# Keep trying to delivery this for 3 days
deliver_until = now + mm_cfg.DELIVERY_RETRY_PERIOD
msgdata['last_recip_count'] = len(recips)
msgdata['deliver_until'] = deliver_until
# Requeue
return 1
except Exception, e:
# Some other exception occurred, which we definitely did not
# expect, so set this message up for requeuing.
self._log(e)
return 1
# We've successfully completed handling of this message
return 0
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