a custom python logger handler

customLogHandler.py

import os
import logging
from logging.handlers import RotatingFileHandler

class RotatingFileHandlerPlus(RotatingFileHandler):

    def __init__(self, filename, *arg, **kwarg):
        logPath = os.environ.get('X_JOB_LOG_PATH')
        if logPath:
            filename = logPath

        super(RotatingFileHandlerPlus, self).__init__(filename, *arg, **kwarg);


class ContextFormatter(logging.Formatter):
    """
    This is a filter which injects contextual information into the log.

    Rather than use actual contextual information, we just use random
    data in this demo.
    """

    def format(self, record):
        # print record.getMessage()
        s = super(ContextFormatter, self).format(record)
        s = s.replace('\n', '\\n')

        return s

[handler_fileHandler]
class=messageSub.lib.loghandler.RotatingFileHandlerPlus
level=DEBUG
formatter=simpleFormatter
args=('log.log','a',2000000,5,)

[formatter_simpleFormatter]
format=[%(asctime)s] [%(levelname)s] %(name)s - %(message)s
datefmt=
class=messageSub.lib.loghandler.ContextFormatter