50 lines
1.6 KiB
Python
50 lines
1.6 KiB
Python
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"""Helpers for logging allowing more advanced logging styles to be used."""
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import inspect
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import logging
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class KeywordMessage:
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"""
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Represents a logging message with keyword arguments.
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Adapted from: https://stackoverflow.com/a/24683360/2267718
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"""
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def __init__(self, fmt, args, kwargs):
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"""Initialize a new BraceMessage object."""
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self._fmt = fmt
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self._args = args
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self._kwargs = kwargs
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def __str__(self):
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"""Convert the object to a string for logging."""
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return str(self._fmt).format(*self._args, **self._kwargs)
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class KeywordStyleAdapter(logging.LoggerAdapter):
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"""Represents an adapter wrapping the logger allowing KeywordMessages."""
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def __init__(self, logger, extra=None):
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"""Initialize a new StyleAdapter for the provided logger."""
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super(KeywordStyleAdapter, self).__init__(logger, extra or {})
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def log(self, level, msg, *args, **kwargs):
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"""Log the message provided at the appropriate level."""
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if self.isEnabledFor(level):
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msg, log_kwargs = self.process(msg, kwargs)
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self.logger._log( # pylint: disable=protected-access
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level, KeywordMessage(msg, args, kwargs), (), **log_kwargs
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)
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def process(self, msg, kwargs):
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"""Process the keyward args in preparation for logging."""
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return (
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msg,
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{
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k: kwargs[k]
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for k in inspect.getfullargspec(
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self.logger._log # pylint: disable=protected-access
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).args[1:] if k in kwargs
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}
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)
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