import yaml

def load_config(config_file):
    with open(config_file, "r", encoding="utf-8") as f:
        data = yaml.safe_load(f)
    return data

def setup_logging(config):
    import logging
    from logging.handlers import RotatingFileHandler

    LOG_FORMAT = '%(asctime)s - %(levelname)s - %(message)s'
    logging.basicConfig(level=config['logging']['level'], format=LOG_FORMAT)
    file_handler = RotatingFileHandler(
        config['logging']['file'],
        maxBytes=config['logging']['max_size'],
        backupCount=config['logging']['backup_count'],
        encoding='utf-8'
    )
    file_handler.setFormatter(logging.Formatter(LOG_FORMAT))
    logger = logging.getLogger()
    logger.addHandler(file_handler)