56 lines
1.4 KiB
Python
56 lines
1.4 KiB
Python
"""
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File based message handler for CircuitPython logging.
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Adafruit invests time and resources providing this open source code.
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Please support Adafruit and open source hardware by purchasing
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products from Adafruit!
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Written by Dave Astels for Adafruit Industries
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Copyright (c) 2018 Adafruit Industries
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Licensed under the MIT license.
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All text above must be included in any redistribution.
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"""
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#pylint:disable=missing-super-argument
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# Example:
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#
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#
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# from file_handler import FileHandler
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# import adafruit_logging as logging
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# l = logging.getLogger()
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# l.addHandler(FileHandler('log.txt'))
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# l.level = logging.ERROR
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# l.error("test")
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from adafruit_logging import LoggingHandler
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class FileHandler(LoggingHandler):
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def __init__(self, filename):
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"""Create an instance.
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:param filename: the name of the file to which to write messages
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"""
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self._filename = filename
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def format(self, level, msg):
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"""Generate a string to log.
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:param level: The level at which to log
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:param msg: The core message
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"""
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return super().format(level, msg) + '\r\n'
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def emit(self, level, msg):
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"""Generate the message and write it to the UART.
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:param level: The level at which to log
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:param msg: The core message
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"""
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with open(self._filename, 'a+') as f:
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f.write(self.format(level, msg))
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