# INspired from Son Nguyen Kim gist here: https://gist.github.com/nguyenkims/e92df0f8bd49973f0c94bddf36ed7fd0

import logging

import sys, os

from logging.handlers import TimedRotatingFileHandler

from datetime import datetime as dt

FORMATTER = logging.Formatter(

"%(asctime)s - %(filename)s:%(lineno)s - %(funcName)s - %(levelname)s - %(message)s"

)

LOG_FILE = os.environ.get("LOG_OUTPUT_DIR", "") + dt.now().strftime(

"logs_%Y-%m-%dT%H-%M-%S.log"

)

LOG_LEVEL = os.environ.get("LOG_LEVEL", "DEBUG").upper()

def get_console_handler():

console_handler = logging.StreamHandler(sys.stdout)

console_handler.setFormatter(FORMATTER)

return console_handler

def get_file_handler():

file_handler = TimedRotatingFileHandler(LOG_FILE, when="midnight")

file_handler.setFormatter(FORMATTER)

return file_handler

def get_logger(logger_name):

logger = logging.getLogger(logger_name)

if logger.hasHandlers():

logger.handlers.clear()

logger.setLevel(LOG_LEVEL) # better to have too much log than not enough

logger.addHandler(get_console_handler())

logger.addHandler(get_file_handler())

# with this pattern, it's rarely necessary to propagate the error up to parent

logger.propagate = False

return logger