Accessing Topology

class topo_reader(DynamicPolicy):
    """
    Policy that stores the topology
    """
    def __init__(self):
        self.network = None
        super(topo_reader,self).__init__()

    def set_network(self, network):
        self.network = network

    def read_topology(self):
        return self.network.topology

    def __repr__(self):
        return "topo_reader"

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