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1 # -*- Mode: Python; test-case-name: flumotion.test.test_common_signals -*- 2 # vi:si:et:sw=4:sts=4:ts=4 3 # 4 # Flumotion - a streaming media server 5 # Copyright (C) 2007 Fluendo, S.L. (www.fluendo.com). 6 # All rights reserved. 7 8 # This file may be distributed and/or modified under the terms of 9 # the GNU General Public License version 2 as published by 10 # the Free Software Foundation. 11 # This file is distributed without any warranty; without even the implied 12 # warranty of merchantability or fitness for a particular purpose. 13 # See "LICENSE.GPL" in the source distribution for more information. 14 15 # Licensees having purchased or holding a valid Flumotion Advanced 16 # Streaming Server license may use this file in accordance with the 17 # Flumotion Advanced Streaming Server Commercial License Agreement. 18 # See "LICENSE.Flumotion" in the source distribution for more information. 19 20 # Headers in this file shall remain intact. 21 22 from flumotion.common import log 2325 __signals__ = () 26 27 __signalConnections = None 28 __signalId = 0 29 336835 self.__ensureSignals() 36 37 if signalName not in self.__signals__: 38 raise ValueError('Unknown signal for object of type %r: %s' 39 % (type(self), signalName)) 40 41 sid = self.__signalId 42 self.__signalConnections[sid] = (signalName, proc, args, kwargs) 43 self.__signalId += 1 44 return sid4547 self.__ensureSignals() 48 49 if signalId not in self.__signalConnections: 50 raise ValueError('Unknown signal ID: %s' % (signalId,)) 51 52 del self.__signalConnections[signalId]5355 self.__ensureSignals() 56 if signalName not in self.__signals__: 57 raise ValueError('Emitting unknown signal %s' % signalName) 58 59 connections = self.__signalConnections 60 for name, proc, pargs, pkwargs in connections.values(): 61 if name == signalName: 62 try: 63 proc(self, *(args + pargs), **pkwargs) 64 except Exception, e: 65 log.warning("signalmixin", "Exception calling " 66 "signal handler %r: %s", proc, 67 log.getExceptionMessage(e))
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