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glasnost/servers/AssertionsServer/AssertionsServer.py

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4.9 KiB
Python
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#!/usr/bin/env python
# -*- coding: iso-8859-15 -*-
# Glasnost
# By: Odile Bénassy <obenassy@entrouvert.com>
# Romain Chantereau <rchantereau@entrouvert.com>
# Nicolas Clapiès <nclapies@easter-eggs.org>
# Pierre-Antoine Dejace <padejace@entrouvert.be>
# Thierry Dulieu <tdulieu@easter-eggs.com>
# Florent Monnier <monnier@codelutin.com>
# Cédric Musso <cmusso@easter-eggs.org>
# Frédéric Péters <fpeters@entrouvert.be>
# Benjamin Poussin <poussin@codelutin.com>
# Emmanuel Raviart <eraviart@entrouvert.com>
# Sébastien Régnier <regnier@codelutin.com>
# Emmanuel Saracco <esaracco@easter-eggs.com>
#
# Copyright (C) 2000, 2001 Easter-eggs & Emmanuel Raviart
# Copyright (C) 2002 Odile Bénassy, Code Lutin, Thierry Dulieu, Easter-eggs,
# Entr'ouvert, Frédéric Péters, Benjamin Poussin, Emmanuel Raviart,
# Emmanuel Saracco & Théridion
# Copyright (C) 2003 Odile Bénassy, Romain Chantereau, Nicolas Clapiès,
# Code Lutin, Pierre-Antoine Dejace, Thierry Dulieu, Easter-eggs,
# Entr'ouvert, Florent Monnier, Cédric Musso, Ouvaton, Frédéric Péters,
# Benjamin Poussin, Rodolphe Quiédeville, Emmanuel Raviart, Sébastien
# Régnier, Emmanuel Saracco, Théridion & Vecam
#
# 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.
__doc__ = """Glasnost Assertions Server"""
__version__ = '$Revision$'[11:-2]
import md5
import sys
import time
import whrandom
glasnostPythonDir = '/usr/local/lib/glasnost-devel' # changed on make install
sys.path.insert(0, glasnostPythonDir)
import glasnost
import glasnost.common.context as context
import glasnost.common.faults as faults
import glasnost.server.ObjectsServer as objects
applicationName = 'AssertionsServer'
applicationRole = 'assertions'
dispatcher = None
expirationTime = 1 * 60
class AssertionsVirtualServer(objects.VirtualServer):
assertions = None
assertionExpirationTimes = None
def init(self):
objects.VirtualServer.init(self)
self.assertions = {}
self.assertionExpirationTimes = {}
class AssertionsServer(objects.Server):
VirtualServer = AssertionsVirtualServer
def addAssertion(self, assertion):
virtualServerId = context.getVar('applicationId')
virtualServer = self.getVirtualServer(virtualServerId)
virtualServer.lock.acquire()
while 1:
digest = md5.new(assertion)
randomSalt = str(self.randomGenerator.uniform(0.1, 1))[2:]
digest.update(randomSalt)
artifact = digest.hexdigest()
if not virtualServer.assertions.has_key(artifact):
break
virtualServer.assertions[artifact] = assertion
virtualServer.assertionExpirationTimes[artifact] \
= time.time() + expirationTime
virtualServer.lock.release()
virtualServer.markCoreAsDirty()
return artifact
def convertVirtualServersIds(self, sourceDispatcherId,
destinationDispatcherId):
# Erase the assertions when converting ids.
return 0
def getAssertion(self, artifact):
virtualServerId = context.getVar('applicationId')
virtualServer = self.getVirtualServer(virtualServerId)
# Remove expired assertions.
currentTime = time.time()
for artifact2 in virtualServer.assertions.keys():
if currentTime > virtualServer.assertionExpirationTimes[artifact2]:
del virtualServer.assertions[artifact2]
del virtualServer.assertionExpirationTimes[artifact2]
if not virtualServer.assertions.has_key(artifact):
raise faults.WrongArtifact(artifact)
assertion = virtualServer.assertions[artifact]
del virtualServer.assertions[artifact]
del virtualServer.assertionExpirationTimes[artifact]
virtualServer.markCoreAsDirty()
return assertion
def init(self):
self.randomGenerator = whrandom.whrandom()
objects.Server.init(self)
def registerPublicMethods(self):
objects.Server.registerPublicMethods(self)
self.registerPublicMethod('addAssertion')
self.registerPublicMethod('getAssertion')
assertionsServer = AssertionsServer()
if __name__ == "__main__":
assertionsServer.launch(applicationName, applicationRole)