90 lines
2.3 KiB
Python
90 lines
2.3 KiB
Python
# Copyright (c) Twisted Matrix Laboratories.
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# See LICENSE for details.
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"""
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Maintainer: Jp Calderone
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"""
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from twisted.news import nntp
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from twisted.internet import protocol, reactor
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import time
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class NNTPFactory(protocol.ServerFactory):
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"""A factory for NNTP server protocols."""
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protocol = nntp.NNTPServer
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def __init__(self, backend):
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self.backend = backend
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def buildProtocol(self, connection):
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p = self.protocol()
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p.factory = self
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return p
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class UsenetClientFactory(protocol.ClientFactory):
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def __init__(self, groups, storage):
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self.lastChecks = {}
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self.groups = groups
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self.storage = storage
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def clientConnectionLost(self, connector, reason):
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pass
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def clientConnectionFailed(self, connector, reason):
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print 'Connection failed: ', reason
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def updateChecks(self, addr):
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self.lastChecks[addr] = time.mktime(time.gmtime())
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def buildProtocol(self, addr):
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last = self.lastChecks.setdefault(addr, time.mktime(time.gmtime()) - (60 * 60 * 24 * 7))
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p = nntp.UsenetClientProtocol(self.groups, last, self.storage)
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p.factory = self
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return p
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# XXX - Maybe this inheritence doesn't make so much sense?
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class UsenetServerFactory(NNTPFactory):
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"""A factory for NNTP Usenet server protocols."""
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protocol = nntp.NNTPServer
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def __init__(self, backend, remoteHosts = None, updatePeriod = 60):
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NNTPFactory.__init__(self, backend)
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self.updatePeriod = updatePeriod
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self.remoteHosts = remoteHosts or []
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self.clientFactory = UsenetClientFactory(self.remoteHosts, self.backend)
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def startFactory(self):
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self._updateCall = reactor.callLater(0, self.syncWithRemotes)
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def stopFactory(self):
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if self._updateCall:
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self._updateCall.cancel()
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self._updateCall = None
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def buildProtocol(self, connection):
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p = self.protocol()
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p.factory = self
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return p
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def syncWithRemotes(self):
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for remote in self.remoteHosts:
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reactor.connectTCP(remote, 119, self.clientFactory)
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self._updateCall = reactor.callLater(self.updatePeriod, self.syncWithRemotes)
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# backwards compatability
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Factory = UsenetServerFactory
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