记录多线程应用程序。 [Errno 24]打开的文件太多

Question

5个线程共享相同的记录器类实例和日志文件，并引发[Errno 24] Too many open files

尝试重写logging方法以在每次创建记录后关闭file handler。

class RootLogger():
    def __init__(self):
        self.logger = None

    # skeleton for creating custom logger
    # name - name of the logger, string or class/module name
    def set_config(self, name, logfile):
        self.logger = logging.getLogger(name)
        # format of the message
        formatter = logging.Formatter('%(asctime)s - [%(name)s] [%(levelname)s] %(message)s')
        # log file rotation, 8mb
        handler = RotatingFileHandler(logfile, maxBytes=8000000, backupCount=5)
        handler.setFormatter(formatter)
        self.logger.setLevel(logging.DEBUG)
        self.logger.addHandler(handler)
        self.logger.setLevel(logging.DEBUG)
        self.logger.propagate = False
        return self.logger

    # patch for excluding 'too many opened files' error
    def handler_close(self):
        handlers = self.logger.handlers
        for handler in handlers:
            handler.close()

    # override commands
    def info(self, msg):
        self.logger.info(msg)
        self.handler_close()

    def debug(self, msg):
        self.logger.debug(msg)
        self.handler_close()

    def error(self, msg):
        self.logger.error(msg)
        self.handler_close()

    def warning(self, msg):
        self.logger.warning(msg)
        self.handler_close()

    def critical(self, msg):
        self.logger.warning(msg)
        self.handler_close()