动态文件路径和python记录器配置文件中FileHandler的文件名 [英] Dynamic filepath & filename for FileHandler in logger config file in python

问题描述

我有一个Python日志配置文件，文件格式如下.

I have a python log config file with a filehandler of the below form.

[handler_filelog]
class: FileHandler
args = ('/var/tmp/log/client.log','a')

相反，我需要以下形式(动态生成的路径).

Instead, I need it in the below form (dynamically generated path).

[handler_filelog]
class: FileHandler
args = ('/var/tmp/log_<unique_string>/client.log','a')

该程序的多个实例可能正在运行，因此将使用无冲突的日志路径和文件. 记录程序一旦设置就无需更改，直到程序执行结束.

Multiple instances of the program may be running and hence non-conflicting log paths and files are to be used. The logger once setup need not change till end of program execution.

有没有一种使用配置文件方法来处理此问题的方法? 我不希望自己创建记录器/处理程序/格式化程序，因为我的日志配置文件包含许多此类记录器，并且基于配置文件的方法要好得多.

Is there a way to handle this using the config file approach? I am not keen on resorting to creating the loggers/handlers/formatters by myself since my log config file has many of these and config file based approach is much nicer.

(更新:我正在使用python 2.4)

(Update: I am using python 2.4)

推荐答案

这可以满足您的需求.您应该首先扩展FileHandler类.将其放在文件中，例如配置文件目录中的myHandler.py:

This does what you need. You should first extend the FileHandler class. Place this in a file, say myHandler.py in your config file's directory:

import logging
import random
import os
class myFileHandler(logging.FileHandler):
    def __init__(self,path,fileName,mode):
        r = random.randint(1,100000)
        path = path+"/log_"+str(r)
        os.mkdir(path)
        super(myFileHandler,self).__init__(path+"/"+fileName,mode)

然后在配置文件中，您可以像这样使用此自定义FileHandler

And then in the config file, you can use this custom FileHandler like this

class: myHandler.myFileHandler
args = ('/var/tmp','client.log','a')

我在我的机器上测试了这个

I tested this one on my machine

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