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32 lines
963 B
Python
32 lines
963 B
Python
"""Classifier-related functions."""
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import re
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import functools
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import logging
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logger = logging.getLogger(__name__)
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class Classifier(object):
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def __init__(self, classifier):
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self.classifier = classifier
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@functools.lru_cache(maxsize=None)
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def scope(self, device):
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"""Build scope for a given device from the classifier structure."""
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matchers = self.classifier["matchers"]
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scope = {}
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for matcher in matchers:
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for regex in matcher:
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mo = re.search(regex, device)
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if mo:
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logger.debug("device {} match regex {}".format(device,
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regex))
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for k, v in matcher[regex].items():
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if isinstance(v, str):
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scope[k] = mo.expand(v)
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else:
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scope[k] = v
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return scope
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