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# -*- coding: utf-8 -*- | |
## begin license ## | |
# | |
# "Meresco Core" is an open-source library containing components to build searchengines, repositories and archives. | |
# | |
# Copyright (C) 2007-2009 SURF Foundation. http://www.surf.nl | |
# Copyright (C) 2007 SURFnet. http://www.surfnet.nl | |
# Copyright (C) 2007-2010 Seek You Too (CQ2) http://www.cq2.nl | |
# Copyright (C) 2007-2009 Stichting Kennisnet Ict op school. http://www.kennisnetictopschool.nl | |
# Copyright (C) 2010 Stichting Kennisnet http://www.kennisnet.nl | |
# Copyright (C) 2011-2012 Seecr (Seek You Too B.V.) http://seecr.nl | |
# | |
# This file is part of "Meresco Core" | |
# | |
# "Meresco Core" 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. | |
# | |
# "Meresco Core" 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 "Meresco Core"; if not, write to the Free Software | |
# Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA | |
# | |
## end license ## | |
from weightless.core import NoneOfTheObserversRespond, DeclineMessage | |
from meresco.core import Observable | |
from transaction import TransactionException, Transaction | |
class TransactionScope(Observable): | |
def __init__(self, transactionName, name=None): | |
Observable.__init__(self, name=transactionName if name is None else name) | |
self._transactionName = transactionName | |
def all_unknown(self, message, *args, **kwargs): | |
__callstack_var_tx__ = Transaction(name=self._transactionName) | |
yield self.once.begin(self._transactionName) | |
try: | |
yield self.all.unknown(message, *args, **kwargs) | |
yield __callstack_var_tx__.commit() | |
except TransactionException: | |
yield __callstack_var_tx__.rollback() | |
def any_unknown(self, message, *args, **kwargs): | |
__callstack_var_tx__ = Transaction(name=self._transactionName) | |
yield self.once.begin(name=self._transactionName) | |
try: | |
try: | |
response = yield self.any.unknown(message, *args, **kwargs) | |
except NoneOfTheObserversRespond: | |
raise DeclineMessage | |
yield __callstack_var_tx__.commit() | |
raise StopIteration(response) | |
except TransactionException: | |
yield __callstack_var_tx__.rollback() |