61 lines
1.6 KiB
Python
61 lines
1.6 KiB
Python
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class MpLinkCharacteristics:
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tcNetemParent = "5:1"
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tcNetemHandle = "10:"
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def __init__(self, id, delay, queueSize, bandwidth, loss, back_up=False):
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self.id = id
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self.delay = delay
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self.queueSize = queueSize
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self.bandwidth = bandwidth
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self.loss = loss
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self.netemAt = []
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self.back_up = back_up
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def addNetemAt(self, n):
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if len(self.netemAt) == 0:
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n.delta = n.at
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self.netemAt.append(n)
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else:
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if n.at > self.netemAt[-1].at:
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n.delta = n.at - self.netemAt[-1].at
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self.netemAt.append(n)
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else:
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print("Do not take into account " + n.__str__() + \
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"because ooo !")
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pass
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def buildNetemCmd(self, ifname):
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cmd = ""
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for n in self.netemAt:
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cmd = cmd + "sleep " + str(n.delta)
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cmd = cmd + " && "
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cmd = cmd + " tc qdisc change dev " + ifname + " "
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cmd = cmd + " parent " + MpLinkCharacteristics.tcNetemParent
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cmd = cmd + " handle " + MpLinkCharacteristics.tcNetemHandle
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cmd = cmd + " netem " + n.cmd + " && "
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cmd = cmd + " true &"
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return cmd
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def asDict(self):
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d = {}
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d['bw'] = float(self.bandwidth)
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d['delay'] = self.delay + "ms"
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d['loss'] = float(self.loss)
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d['max_queue_size'] = int(self.queueSize)
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return d
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def __str__(self):
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s = "Link id : " + str(self.id) + "\n"
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s = s + "\tDelay : " + str(self.delay) + "\n"
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s = s + "\tQueue Size : " + str(self.queueSize) + "\n"
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s = s + "\tBandwidth : " + str(self.bandwidth) + "\n"
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s = s + "\tLoss : " + str(self.loss) + "\n"
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s = s + "\tBack up : " + str(self.back_up) + "\n"
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for l in self.netemAt:
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s = s + "\t" + l.__str__() + "\n"
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return s
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