Limnoria/src/twistedDrivers.py

#!/usr/bin/env python

###
# Copyright (c) 2002, Jeremiah Fincher
# All rights reserved.
#
# Redistribution and use in source and binary forms, with or without
# modification, are permitted provided that the following conditions are met:
#
#   * Redistributions of source code must retain the above copyright notice,
#     this list of conditions, and the following disclaimer.
#   * Redistributions in binary form must reproduce the above copyright notice,
#     this list of conditions, and the following disclaimer in the
#     documentation and/or other materials provided with the distribution.
#   * Neither the name of the author of this software nor the name of
#     contributors to this software may be used to endorse or promote products
#     derived from this software without specific prior written consent.
#
# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
# AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
# IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
# ARE DISCLAIMED.  IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
# LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
# CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
# SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
# INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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# ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
# POSSIBILITY OF SUCH DAMAGE.
###

__revision__ = "$Id$"

import fix

import time

import log
import conf
import ircdb
import drivers
import ircmsgs

from twisted.internet import reactor
from twisted.protocols.basic import LineReceiver
from twisted.internet.protocol import ReconnectingClientFactory

class TwistedRunnerDriver(drivers.IrcDriver):
    def run(self):
        try:
            reactor.iterate(conf.supybot.drivers.poll())
        except:
            log.exception('Uncaught exception outside reactor:')

class SupyIrcProtocol(LineReceiver):
    delimiter = '\n'
    MAX_LENGTH = 1024
    def __init__(self):
        self.mostRecentCall = reactor.callLater(1, self.checkIrcForMsgs)

    def lineReceived(self, line):
        start = time.time()
        msg = ircmsgs.IrcMsg(line)
        #log.debug('Time to parse IrcMsg: %s', time.time()-start)
        self.irc.feedMsg(msg)

    def checkIrcForMsgs(self):
        if self.connected:
            msg = self.irc.takeMsg()
            if msg:
                self.transport.write(str(msg))
        self.mostRecentCall = reactor.callLater(1, self.checkIrcForMsgs)

    def connectionLost(self, failure):
        self.mostRecentCall.cancel()
        self.irc.reset()
        log.warning(failure.getErrorMessage())

    def connectionMade(self):
        self.irc.reset()
        self.irc.driver = self

    def die(self):
        log.info('Driver for %s dying.', self.irc)
        self.factory.continueTrying = False
        self.transport.loseConnection()

    def reconnect(self):
        self.transport.loseConnection()


class SupyReconnectingFactory(ReconnectingClientFactory):
    maxDelay = 300
    protocol = SupyIrcProtocol
    def __init__(self, (server, port), irc):
        self.irc = irc
        self.server = (server, port)
        reactor.connectTCP(server, port, self)

    def buildProtocol(self, addr):
        protocol = ReconnectingClientFactory.buildProtocol(self, addr)
        protocol.irc = self.irc
        return protocol

    def die(self):
        pass

Driver = SupyReconnectingFactory

try:
    ignore(poller)
except NameError:
    poller = TwistedRunnerDriver()
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