[python] logging.config.dictConfigのサンプル

logging_config.json

{
    "version": 1,
    "disable_existing_loggers": "true",
    "formatters": {
        "console": {
            "format": "[%(asctime)s][%(levelname)s] %(name)s %(filename)s:%(funcName)s:%(lineno)d | %(message)s",
            "datefmt": "%Y/%m/%d %H:%M:%S"
        }
    },
    "handlers": {
        "console": {
            "level": "DEBUG",
            "class": "logging.StreamHandler",
            "formatter": "console",
            "stream": "ext://sys.stderr"
        }
    },
    "loggers": {
        "": {
            "handlers": ["console"],
            "level": "ERROR",
            "propagate": "false"
        }
    }
}

logging_dictConfig_example.py

"""
logging.config.dictConfig() のサンプル

REFERENCES::
https://docs.python.jp/3/library/logging.config.html#logging-config-dictschema
https://docs.sentry.io/clients/python/integrations/logging/
"""
import logging.config

logging.config.dictConfig({
    'version': 1,
    'disable_existing_loggers': True,
    'formatters': {
        'console': {
            'format': '[%(asctime)s][%(levelname)s] %(name)s '
                      '%(filename)s:%(funcName)s:%(lineno)d | %(message)s',
            'datefmt': '%Y/%m/%d %H:%M:%S',
        }
    },
    'handlers': {
        'console': {
            'level': 'DEBUG',
            'class': 'logging.StreamHandler',
            'formatter': 'console',
            'stream': 'ext://sys.stderr'
        }
    },
    'loggers': {
        '': {
            'handlers': ['console'],
            'level': 'DEBUG',
            'propagate': False
        },
        '__main__': {
            'level': 'WARN',
            'propagate': True
        }
    }
})

logger = logging.getLogger(__name__)


def go():
    logger.debug('debug message')
    logger.info('info message')
    logger.warning('warning message')
    try:
        1 / 0
    except ZeroDivisionError:
        logger.error('error message', exc_info=True)
    try:
        1 / 0
    except ZeroDivisionError:
        logger.fatal('fatal message', exc_info=True)


if __name__ == '__main__':
    go()

logging_dictConfig_example2.py

"""
logging.config.dictConfig() のサンプル２
jsonファイルに設定を記載して、それを読み込むサンプルです。

REFERENCES::
https://docs.python.jp/3/library/logging.config.html#logging-config-dictschema
https://docs.sentry.io/clients/python/integrations/logging/
https://stackoverflow.com/questions/38323810/does-pythons-logging-config-dictconfig-apply-the-loggers-configuration-setti
"""
import logging
import logging.config
import json
import pathlib

config_file = pathlib.Path('logging_config.json')
with config_file.open(mode='r', encoding='utf-8') as fd_conf:
    logging.config.dictConfig(json.load(fd_conf))

logger = logging.getLogger(__name__)


def go():
    logger.debug('debug message')
    logger.info('info message')
    logger.warning('warning message')
    try:
        1 / 0
    except ZeroDivisionError:
        logger.error('error message', exc_info=True)


if __name__ == '__main__':
    go()