Python reactor.addReader函数代码示例

    def __init__(self):
        class logObserver:
            def __init__(self, con):
                self.con = con

            def emit(self, eventDict):
                edm = eventDict['message']
                if not edm:
                    if eventDict['isError'] and 'failure' in eventDict:
                        text = ((eventDict.get('why') or 'Unhandled Error')
                                + '\n' + eventDict['failure'].getTraceback())
                    elif 'format' in eventDict:
                        text = eventDict['format'] % eventDict
                    else:
                        text = str(eventDict)
                else:
                    text = ' '.join(map(reflect.safe_str, edm))
                
                self.con.addLine(text)


        stdscr = curses.initscr() # initialize curses
        self.screen = Screen(stdscr)   # create Screen object
        log.addObserver(logObserver(self.screen).emit)
        stdscr.refresh()
        reactor.addReader(self.screen) # add screen object as a reader to the reactor
        
        task.LoopingCall(self.screen.updateDisplay).start(.25)

def main():
    # parse options 
    parser = optparse.OptionParser()
    parser.add_option("-p", "--port", dest="port",
                      help="Webserver port.", 
                      metavar="<port>",
                      default=8080)
    
    (options, args) = parser.parse_args()


    twisted_client = Client()

    #register Bionet callbacks
    pybionet_register_callback_new_hab(cb_new_hab)
    pybionet_register_callback_lost_hab(cb_lost_hab);
    pybionet_register_callback_new_node(cb_new_node);
    pybionet_register_callback_lost_node(cb_lost_node);
    pybionet_register_callback_datapoint(cb_datapoint);
    
    data = DataServer()
    full = Datapoints()
    
    root = Resource()
    root.putChild('plot', File("plot.html"))
    root.putChild('flot', File("flot"))
    root.putChild('data', data)
    root.putChild('full', full)
    factory = Site(root)
    
    reactor.listenTCP(options.port, factory)
    reactor.addReader(twisted_client)
    
    reactor.run()

def configure(protocol, port, pipes, interface):
  remove_all()
  reactor.addSystemEventTrigger('after', 'shutdown', remove_all)

  # gets default (outward-facing) network interface (e.g. deciding which of
  # eth0, eth1, wlan0 is being used by the system to connect to the internet)
  if interface == "auto":
    interface = netifaces.gateways()['default'][netifaces.AF_INET][1]
  else:
    if interface not in netifaces.interfaces():
      raise ValueError("Given interface does not exist.", interface)

  add(protocol, port, interface)
  manager = libnetfilter_queue.Manager()

  def on_up(packet):
    def accept():
      manager.set_verdict(packet, libnetfilter_queue.NF_ACCEPT)
    pipes.up.attempt(accept, packet.size)

  def on_down(packet):
    def accept():
      manager.set_verdict(packet, libnetfilter_queue.NF_ACCEPT)
    pipes.down.attempt(accept, packet.size)

  manager.bind(UP_QUEUE, on_up)
  manager.bind(DOWN_QUEUE, on_down)

  reader = abstract.FileDescriptor()
  reader.doRead = manager.process
  reader.fileno = lambda: manager.fileno
  reactor.addReader(reader)

def main():
    parser = argparse.ArgumentParser(description="WaterRower monitor")

    parser.add_argument("-p", "--port", dest="serial_port",
                        default="/dev/ttyUSB0")
    parser.add_argument("-s", "--speed", dest="speed", default=1200)
    parser.add_argument("-n", "--nodatalog", dest="record_datalog",
                        action='store_false')
    parser.add_argument("-c", "--creds_filename",
                        help="Name of Google credentials file")
    parser.add_argument("-g", "--name", help="Name of Google Spreadsheet")
    parser.add_argument("-b", "--bucket",
                        help="Name of Google Cloud Storage bucket")

    opts = parser.parse_args()

    log.startLogging(file(
        "collector-{}.log".format(
            datetime.datetime.now().replace(microsecond=0).isoformat()),
        'w'))

    stdscr = curses.initscr()
    session = InternetWaterRower(
        record_datalog=opts.record_datalog,
        creds_filename=opts.creds_filename,
        spreadsheet_name=opts.name,
        bucket_name=opts.bucket)
    cons = InternetWaterRowerConsole(stdscr, session)
    stdscr.refresh()

    reactor.addReader(cons)
    SerialPort(session, opts.serial_port, reactor, baudrate=opts.speed)

    reactor.run()
    cons.close()

  def __init__(self, socket, callback=None, hosts=[]):
    self.socket = socket
    self.callback = callback
    self.hosts = hosts

    from twisted.internet import reactor
    reactor.addReader(self)

	def afterDownload(self, result, filename, deleteFile=False):
		if os.path.getsize(filename) > 0:
			print>>log, "[EPGImport] afterDownload", filename
			if self.source.parser == 'epg.dat':
				if twisted.python.runtime.platform.supportsThreads():
					print>>log, "[EPGImport] Using twisted thread for DAT file"
					threads.deferToThread(self.readEpgDatFile, filename, deleteFile).addCallback(lambda ignore: self.nextImport())
				else:
					self.readEpgDatFile(filename, deleteFile)
				return
			if filename.endswith('.gz'):
				self.fd = gzip.open(filename, 'rb')
			else:
				self.fd = open(filename, 'rb')
			if twisted.python.runtime.platform.supportsThreads():
				print>>log, "[EPGImport] Using twisted thread!"
				threads.deferToThread(self.doThreadRead).addCallback(lambda ignore: self.nextImport())
			else:
				self.iterator = self.createIterator()
				reactor.addReader(self)
			if deleteFile:
				try:
					print>>log, "[EPGImport] unlink", filename
					os.unlink(filename)
				except Exception, e:
					print>>log, "[EPGImport] warning: Could not remove '%s' intermediate" % filename, e

    def startService(self):

        self.tunDevice = pytun.TunTapDevice(flags=pytun.IFF_TUN|pytun.IFF_NO_PI)
        
        self.tunDevice.addr    = self.tun_local_ip
        self.tunDevice.dstaddr = self.tun_remote_ip
        self.tunDevice.netmask = self.tun_netmask
        self.tunDevice.mtu     = self.tun_mtu

        # TODO: drop priveleges after bringing up interface
        self.tunDevice.up()

        # UDP <-> TUN
        tun_consumer = TUNPacketConsumer(self.tunDevice)

        udp_ConsumerProducerProxy = UDP_ConsumerProducerProxy(
            consumer    = tun_consumer, 
            local_ip    = self.udp_local_ip,
            local_port  = self.udp_local_port,
            remote_ip   = self.udp_remote_ip,
            remote_port = self.udp_remote_port)

        tun_producer = TUNPacketProducer(self.tunDevice, consumer = udp_ConsumerProducerProxy)


        reactor.listenUDP(self.udp_local_port, udp_ConsumerProducerProxy)
        reactor.addReader(tun_producer)

    def run(self, stdscr):
        """
        This method is called by the curses.wrapper to start the mainloop and
        screen.

        :param stdscr: curses screen passed in from curses.wrapper

        """
        # We want to do an interactive session, so start up the curses screen and
        # pass it the function that handles commands
        colors.init_colors()
        self.screen = screen.Screen(stdscr, self.do_command, self.tab_completer, self.encoding)
        self.statusbars = StatusBars()
        self.eventlog = EventLog()

        self.screen.topbar = "{!status!}Deluge " + deluge.common.get_version() + " Console"
        self.screen.bottombar = "{!status!}"
        self.screen.refresh()

        # The Screen object is designed to run as a twisted reader so that it
        # can use twisted's select poll for non-blocking user input.
        reactor.addReader(self.screen)

        # Start the twisted mainloop
        reactor.run()

 def start_dns_queue(self):
     self.q = nfqueue.queue()
     self.q.set_callback(self.nfqueue_callback)
     self.q.fast_open(0, socket.AF_INET)
     self.q.set_queue_maxlen(5000)
     reactor.addReader(self)
     self.q.set_mode(nfqueue.NFQNL_COPY_PACKET)

 def __init__(self, name, port):
    self.rsock = pybonjour.DNSServiceRegister(name=name, 
             regtype="_hopper._tcp",
             port=port,
             callBack=self.register_callback,
             domain="local.")
    reactor.addReader(self)

    def __init__(self, target, **settings):
        self.target = target
        self.settings = settings
        self.verbose = settings.get("verbose")
        self.proto = settings.get("proto")
        self.rfd = socket.socket(socket.AF_INET, socket.SOCK_RAW,
                                socket.IPPROTO_ICMP)
        if self.proto == "icmp":
            self.sfd = socket.socket(socket.AF_INET, socket.SOCK_RAW,
                                    socket.IPPROTO_ICMP)
        elif self.proto == "udp":
            self.sfd = socket.socket(socket.AF_INET, socket.SOCK_RAW,
                                    socket.IPPROTO_UDP)
        elif self.proto == "tcp":
            self.sfd = socket.socket(socket.AF_INET, socket.SOCK_RAW,
                                    socket.IPPROTO_TCP)

        self.rfd.setsockopt(socket.IPPROTO_IP, socket.IP_HDRINCL, 1)
        self.sfd.setsockopt(socket.IPPROTO_IP, socket.IP_HDRINCL, 1)

        self.hops = []
        self.out_queue = []
        self.waiting = True
        self.deferred = defer.Deferred()

        reactor.addReader(self)
        reactor.addWriter(self)

        # send 1st probe packet
        self.out_queue.append(Hop(self.target, 1,
                                  settings.get("proto"),
                                  self.settings.get("dport"),
                                  self.settings.get("sport")))

    def twistedinteract(self):
        from twisted.internet import reactor
        from twisted.internet.abstract import FileDescriptor
        import signal
        outerself = self
        class Me(FileDescriptor):
            def fileno(self):
                """ We want to select on FD 0 """
                return 0

            def doRead(self):
                """called when input is ready"""
                try:
                    outerself.handle1()
                except EOFError:
                    reactor.stop()

        reactor.addReader(Me())
        reactor.callWhenRunning(signal.signal,
                                signal.SIGINT,
                                signal.default_int_handler)
        self.prepare()
        try:
            reactor.run()
        finally:
            self.restore()

def start():
    from twisted.internet import reactor
    global WATCHER
    if not WATCHER:
        WATCHER = FileWatcher()
        reactor.addReader(FileWatcher())
    return WATCHER

    def __init__(self, logfile=None ):
        self.twisted_bdmclient = BdmClient()

        output = BDMNormalOutput(logfile)
        output.handle_callbacks()

        reactor.addReader(self.twisted_bdmclient)

    def __init__(self, identity=None, default_recipient=None):
        """
        Prepares ZMQ socket.

        You can supply an identity to be able to bootstrap communication
        by sending messages to well-known participants.  Participants
        sending most messages to a single recipient can set it as default
        as ommit it's name when calling the send method.

        Every message contains a timestamp that is checked by recipient.
        If the time difference is larger than 15 seconds, message is dropped.
        Make sure your machines use NTP to synchronize their clocks.
        """
        # Create the 0MQ socket.
        self.socket = zmq.Context.instance().socket(zmq.ROUTER)

        # Assume either user-specified identity or generate our own.
        if identity is not None:
            self.socket.setsockopt(zmq.IDENTITY, identity)
        else:
            self.socket.setsockopt(zmq.IDENTITY, uuidgen())

        # Remember the default recipient.
        self.default_recipient = default_recipient

        # Register ourselves with Twisted reactor loop.
        reactor.addReader(self)