wamp.py 文件源码

def signal(self, name):
        """
        Decorator attaching a function as handler for application signals.

        Signals are local events triggered internally and exposed to the
        developer to be able to react to the application lifecycle.

        If the function yield, it will be assumed that it's an asynchronous
        coroutine and inlineCallbacks will be applied to it.

        Current signals :

           - `onjoined`: Triggered after the application session has joined the
              realm on the router and registered/subscribed all procedures
              and event handlers that were setup via decorators.
           - `onleave`: Triggered when the application session leaves the realm.

        .. code-block:: python

           @app.signal('onjoined')
           def _():
              # do after the app has join a realm

        :param name: The name of the signal to watch.
        :type name: unicode
        """
        def decorator(func):
            if inspect.isgeneratorfunction(func):
                func = inlineCallbacks(func)
            self._signals.setdefault(name, []).append(func)
            return func
        return decorator