_logging.py

# Copyright (c) 2022 Nariaki Tateiwa

# Permission is hereby granted, free of charge, to any person obtaining a 
# copy of this software and associated documentation files (the 
# "Software"), to deal in the Software without restriction, including 
# without limitation the rights to use, copy, modify, merge, publish, 
# distribute, sublicense, and/or sell copies of the Software, and to 
# permit persons to whom the Software is furnished to do so, subject to 
# the following conditions:

# The above copyright notice and this permission notice shall be 
# included in all copies or substantial portions of the Software.

# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, 
# EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF 
# MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND 
# NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE 
# LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION 
# OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION 
# WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.



import logging

from colorlog import ColoredFormatter

class ColorLogger:
    def __init__(self):
        """Return a logger with a ColoredFormatter."""
        self.formatter = ColoredFormatter(
            "%(log_color)s%(levelname)s:%(name)s:%(funcName)s(%(lineno)s):%(message)s",
            datefmt=None,
            reset=True,
            log_colors={
                'DEBUG':    'cyan',
                'INFO':     'green',
                'WARNING':  'yellow',
                'ERROR':    'red',
                'CRITICAL': 'red,bg_white',
            }
        )

        logger = logging.getLogger()
        self.root_logger = logger

        self.setStreamHandler()


    def setStreamHandler(self):
        handler = logging.StreamHandler()
        handler.setFormatter(self.formatter)
        self.root_logger.addHandler(handler)


    def setFileHandler(self, filename="log", log_level=10):
        handler = logging.FileHandler(filename=filename)
        handler.setFormatter(self.formatter)
        handler.setLevel(log_level)
        self.root_logger.addHandler(handler)


    def setLevel(self, log_level):
        self.root_logger.setLevel(log_level)
        return self.root_logger


    def __call__(self, name):
        return self.root_logger.getChild(name)


getLogger  = ColorLogger()
setLevel   = getLogger.setLevel
setLogFile = getLogger.setFileHandler