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59 lines
1.4 KiB
59 lines
1.4 KiB
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import os
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from random import randint
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class TapDevice(object):
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"""
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Utility class - adds/removes a tap device on the linux system. Can be used as a context manager.
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"""
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def __init__(self):
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self.num = randint(0, 100000)
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def create(self):
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os.system("ip tuntap add name {} mode tap".format(self))
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def destroy(self):
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os.system("ip link delete {}".format(self))
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def __str__(self):
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return "tap{}".format(self.num)
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def __enter__(self):
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self.create()
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return str(self)
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def __exit__(self, type, value, traceback):
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self.destroy()
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class Machine(object):
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"""
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All runnable types should subclass this
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"""
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def __init__(self, machine_spec):
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self.spec = machine_spec
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def run_machine(self):
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"""
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Run the machine and block until it exits (or was killed)
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"""
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raise NotImplemented()
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def stop_machine(self):
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"""
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Ask the machine to stop nicely
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"""
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raise NotImplemented()
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def kill_machine(self):
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"""
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Stop the machine, brutally
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"""
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raise NotImplemented()
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def get_datastore_path(self, datastore_name, *paths):
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"""
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Resolve the filesystem path for a path in the given datastore
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"""
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return self.spec.master.datastores.get(datastore_name).get_filepath(*paths)
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