39 lines
1,016 B
Python
39 lines
1,016 B
Python
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import datetime
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import fcntl
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import socket
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import struct
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from contextlib import contextmanager
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from enum import Enum
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from ereuse_utils import Dumpeable
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class Severity(Enum):
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Info = 'Info'
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Error = 'Error'
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def get_hw_addr(ifname):
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# http://stackoverflow.com/a/4789267/1538221
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s = socket.socket(socket.AF_INET, socket.SOCK_DGRAM)
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info = fcntl.ioctl(s.fileno(), 0x8927, struct.pack('256s', ifname[:15]))
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return ':'.join('%02x' % ord(char) for char in info[18:24])
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class Measurable(Dumpeable):
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"""A base class that allows measuring execution times."""
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def __init__(self) -> None:
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super().__init__()
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self.elapsed = None
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@contextmanager
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def measure(self):
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init = datetime.datetime.now(datetime.timezone.utc)
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yield
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self.elapsed = datetime.datetime.now(datetime.timezone.utc) - init
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try:
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assert self.elapsed.total_seconds() > 0
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except AssertionError:
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self.elapsed = datetime.timedelta(seconds=0)
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