# # Copyright (c) 2006 The Apache Software Foundation # # Licensed under the Apache License, Version 2.0 (the "License"); # you may not use this file except in compliance with the License. # You may obtain a copy of the License at # # http://www.apache.org/licenses/LICENSE-2.0 # # Unless required by applicable law or agreed to in writing, software # distributed under the License is distributed on an "AS IS" BASIS, # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. # See the License for the specific language governing permissions and # limitations under the License. # """ Delegate implementation intended for use with the peer module. """ import threading, inspect from spec import pythonize class Delegate: def __init__(self): self.handlers = {} self.invokers = {} # initialize all the mixins self.invoke_all("init") def invoke_all(self, meth, *args, **kwargs): for cls in inspect.getmro(self.__class__): if hasattr(cls, meth): getattr(cls, meth)(self, *args, **kwargs) def dispatch(self, channel, message): method = message.method spec = method.klass.spec try: handler = self.handlers[method] except KeyError: name = "%s_%s" % (pythonize(method.klass.name), pythonize(method.name)) handler = getattr(self, name) self.handlers[method] = handler return handler(channel, message) def close(self, reason): self.invoke_all("close", reason)