Source code for otestpoint.labtools.subject

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# Copyright (c) 2016-2017 - Adjacent Link LLC, Bridgewater, New Jersey
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class Subject(object):
    def __init__(self,stream):
        self._stream = stream
        self._observers = set()

    def notify_observers(self):
        for observer in self._observers:
            observer.notify(self)

    def attach(self,observer):
        self._observers.add(observer)

    def dettach(self,observer):
        self._observers.remove(observer)

    def stream(self):
        return self._stream

    def state(self):
        raise NotImplemented

    def name(self):
        raise NotImplemented