2012-07-07 112 views
0

我想写一个简单的记录器,但我得到一个异常抛出。我希望得到一些关于为什么抛出这个异常的建议,但也会欣赏一些设计建议(请记住,我想保持这种简单)。简单的旋转Python记录器(RotatingFileHandler)

代码:

import logging 
import logging.handlers 

class Logger: 

    @staticmethod 
    def log_to_file(logText): 

     logFile = logging.handlers.RotatingFileHandler('/var/log/sosms/sosmsd.log', 'a', 1000, 5) 
     formatter = logging.Formatter() 
     logFile.setFormatter(formatter) 

     logFile.emit(logText) 

     return 

输出:

[email protected]:/var/log/sosms$ /etc/rc.local 
Traceback (most recent call last): 
    File "/usr/lib/python2.7/logging/handlers.py", line 77, in emit 
    if self.shouldRollover(record): 
    File "/usr/lib/python2.7/logging/handlers.py", line 156, in shouldRollover 
    msg = "%s\n" % self.format(record) 
    File "/usr/lib/python2.7/logging/__init__.py", line 719, in format 
    return fmt.format(record) 
    File "/usr/lib/python2.7/logging/__init__.py", line 464, in format 
    record.message = record.getMessage() 
AttributeError: 'str' object has no attribute 'getMessage' 
Traceback (most recent call last): 
    File "/git/sosms/sosmsd/Main.py", line 10, in <module> 
    Logger.Logger.log_to_file('SOSMSD starting..') 
    File "/git/sosms/sosmsd/Logger.py", line 14, in log_to_file 
    logFile.emit(logText) 
    File "/usr/lib/python2.7/logging/handlers.py", line 83, in emit 
    self.handleError(record) 
    File "/usr/lib/python2.7/logging/__init__.py", line 799, in handleError 
    record.filename, record.lineno)) 
AttributeError: 'str' object has no attribute 'filename' 
+0

一个建议:你的封装日志实现一类是不必要的。 – 2012-07-08 00:52:24

回答

3

由于处理程序的.emit()需要记录,而不是一个字符串。

http://docs.python.org/library/logging.handlers.html

你可能不希望创建自己的记录器类,只需检索一个使用Logging.getLogger(__name__)(或类似),并调用适当的方法(.error(logText)为例)。
编辑:你绝对不想在每次登录时创建一个新的处理程序,通常应该为每个应用程序创建一次。对于简单的情况,你可以简单地使用logging.basicConfig()

http://docs.python.org/library/logging.html