def __init__(self, te=None, ts=None, c=None, beta=None):
self.te = TrafficEmulator() if te is None else te
self.ts = TrafficServer() if ts is None else ts
self.c = DummyController() if c is None else c
self.epoch = 0
self.last_reward = None
self.last_cost = None
self.BETA = beta
