easy_tpp/utils/log_utils.py

import logging
import sys
import typing

from easy_tpp.utils.const import LogConst

# -------- log setting ---------
DEFAULT_LOGGER = "easytpp.logger"


class CustomFormatter(logging.Formatter):
    grey = "\x1b[38;20m"
    yellow = "\x1b[33;20m"
    red = "\x1b[31;20m"
    bold_red = "\x1b[31;1m"
    reset = "\x1b[0m"
    format = LogConst.DEFAULT_FORMAT_LONG

    FORMATS = {
        logging.DEBUG: grey + format + reset,
        logging.INFO: grey + format + reset,
        logging.WARNING: yellow + format + reset,
        logging.ERROR: red + format + reset,
        logging.CRITICAL: bold_red + format + reset
    }

    def format(self, record):
        log_fmt = self.FORMATS.get(record.levelno)
        formatter = logging.Formatter(log_fmt)
        return formatter.format(record)


DEFAULT_FORMATTER = CustomFormatter()

_ch = logging.StreamHandler(stream=sys.stdout)
_ch.setFormatter(DEFAULT_FORMATTER)

_DEFAULT_HANDLERS = [_ch]

_LOGGER_CACHE = {}  # type: typing.Dict[str, logging.Logger]


def get_logger(name, level="INFO", handlers=None, update=False):
    if name in _LOGGER_CACHE and not update:
        return _LOGGER_CACHE[name]
    logger = logging.getLogger(name)
    logger.setLevel(level)
    logger.handlers = handlers or _DEFAULT_HANDLERS
    logger.propagate = False
    return logger


# -------------------------- Singleton Object --------------------------
default_logger = get_logger(DEFAULT_LOGGER)