############################################################################ # # Copyright (c) 2007 Nexedi SARL and Contributors. All Rights Reserved. # Vincent Pelletier <vincent@nexedi.com> # # WARNING: This program as such is intended to be used by professional # programmers who take the whole responsability of assessing all potential # consequences resulting from its eventual inadequacies and bugs # End users who are looking for a ready-to-use solution with commercial # garantees and support are strongly adviced to contract a Free Software # Service Company # # 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. # ############################################################################## from ZEO.ClientStorage import ClientStorage from zLOG import LOG, WARNING, INFO LAST_COMMITED_TID_PROPERTY_ID = '_last_commited_tid' # Hook tpc_finish's hook method. # New hook must be a local method because it must access tpc_finish's "self" # and original hook. LOG('TIDStorage',INFO,'Monkey patching ClientStorage.tpc_finish and ClientStorage.getLastCommitedTID') original_tpc_finish = ClientStorage.tpc_finish def tpc_finish(self, txn, f=None): def saveTIDOnInstance(tid): if f is not None: f(tid) setattr(self, LAST_COMMITED_TID_PROPERTY_ID, tid) return original_tpc_finish(self, txn, f=saveTIDOnInstance) ClientStorage.tpc_finish = tpc_finish def getLastCommitedTID(self): """ Return last commited tid for this storage, or None if no transaction was commited yet. """ return getattr(self, LAST_COMMITED_TID_PROPERTY_ID, None) ClientStorage.getLastCommitedTID = getLastCommitedTID