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# Copyright (C) 2007-2012 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/>.
"""Implementations of the IRequests and IListRequests interfaces."""
from __future__ import absolute_import, unicode_literals
__metaclass__ = type
__all__ = [
'Requests',
]
from datetime import timedelta
from storm.locals import AutoReload, Int, RawStr, Reference, Unicode
from zope.component import getUtility
from zope.interface import implements
from mailman.config import config
from mailman.database.model import Model
from mailman.database.types import Enum
from mailman.interfaces.pending import IPendable, IPendings
from mailman.interfaces.requests import IListRequests, IRequests, RequestType
class DataPendable(dict):
implements(IPendable)
class ListRequests:
implements(IListRequests)
def __init__(self, mailing_list):
self.mailing_list = mailing_list
@property
def count(self):
return config.db.store.find(
_Request, mailing_list=self.mailing_list).count()
def count_of(self, request_type):
return config.db.store.find(
_Request,
mailing_list=self.mailing_list, request_type=request_type).count()
@property
def held_requests(self):
results = config.db.store.find(
_Request, mailing_list=self.mailing_list)
for request in results:
yield request
def of_type(self, request_type):
results = config.db.store.find(
_Request,
mailing_list=self.mailing_list, request_type=request_type)
for request in results:
yield request
def hold_request(self, request_type, key, data=None):
if request_type not in RequestType:
raise TypeError(request_type)
if data is None:
data_hash = None
else:
# We're abusing the pending database as a way of storing arbitrary
# key/value pairs, where both are strings. This isn't ideal but
# it lets us get auxiliary data almost for free. We may need to
# lock this down more later.
pendable = DataPendable()
pendable.update(data)
token = getUtility(IPendings).add(pendable, timedelta(days=5000))
data_hash = token
request = _Request(key, request_type, self.mailing_list, data_hash)
config.db.store.add(request)
return request.id
def get_request(self, request_id):
result = config.db.store.get(_Request, request_id)
if result is None:
return None
if result.data_hash is None:
return result.key, result.data_hash
pendable = getUtility(IPendings).confirm(
result.data_hash, expunge=False)
data = dict()
data.update(pendable)
return result.key, data
def delete_request(self, request_id):
request = config.db.store.get(_Request, request_id)
if request is None:
raise KeyError(request_id)
# Throw away the pended data.
getUtility(IPendings).confirm(request.data_hash)
config.db.store.remove(request)
class Requests:
implements(IRequests)
def get_list_requests(self, mailing_list):
return ListRequests(mailing_list)
class _Request(Model):
"""Table for mailing list hold requests."""
id = Int(primary=True, default=AutoReload)
key = Unicode()
request_type = Enum(RequestType)
data_hash = RawStr()
mailing_list_id = Int()
mailing_list = Reference(mailing_list_id, 'MailingList.id')
def __init__(self, key, request_type, mailing_list, data_hash):
super(_Request, self).__init__()
self.key = key
self.request_type = request_type
self.mailing_list = mailing_list
self.data_hash = data_hash
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