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# Copyright (C) 2008-2017 by the Free Software Foundation, Inc.
#
# This file is part of GNU Mailman.
#
# GNU Mailman 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 3 of the License, or (at your option)
# any later version.
#
# GNU Mailman 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
# GNU Mailman. If not, see <http://www.gnu.org/licenses/>.
"""Application support for pipeline processing."""
import logging
from mailman.app.bounces import bounce_message
from mailman.config import config
from mailman.interfaces.handler import IHandler
from mailman.interfaces.pipeline import (
DiscardMessage, IPipeline, RejectMessage)
from mailman.utilities.plugins import add_pluggable_components
from public import public
dlog = logging.getLogger('mailman.debug')
vlog = logging.getLogger('mailman.vette')
@public
def process(mlist, msg, msgdata, pipeline_name='built-in'):
"""Process the message through the given pipeline.
:param mlist: the IMailingList for this message.
:param msg: The Message object.
:param msgdata: The message metadata dictionary.
:param pipeline_name: The name of the pipeline to process through.
"""
message_id = msg.get('message-id', 'n/a')
pipeline = config.pipelines[pipeline_name]
for handler in pipeline:
dlog.debug('{} pipeline {} processing: {}'.format(
message_id, pipeline_name, handler.name))
try:
handler.process(mlist, msg, msgdata)
except DiscardMessage as error:
vlog.info(
'{} discarded by "{}" pipeline handler "{}": {}'.format(
message_id, pipeline_name, handler.name, error.message))
except RejectMessage as error:
vlog.info(
'{} rejected by "{}" pipeline handler "{}": {}'.format(
message_id, pipeline_name, handler.name, error.message))
bounce_message(mlist, msg, error)
@public
def initialize():
"""Initialize the pipelines."""
# Find all handlers in the registered plugins.
add_pluggable_components('handlers', IHandler, config.handlers)
# Set up some pipelines.
add_pluggable_components('pipelines', IPipeline, config.pipelines)
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