dynamic routing based on level

[Mi...@ubs.com]

Hi There,

I am trying to use Log4j to figure out a way to dynamiclly use a different appender depending on the severity level.  For example, if the level of the message being logged is below ERROR I would just log it to a file.  But if the level is or above ERROR I want to be able to log it to, say, a database (or send a jms message).  What would be the strategy to handle this?  

I guess one way is to extend the Logger class and override those log metheds (error, fatal, etc).  But I'd prefer to use delegation to handle it.  In other words, if I could wrapper around the Logger class, and the client will make call through the wrapper.  And the wrapper would internally enhance those methods (error, fatal, etc) and then delegate to the Logger.  But not sure if that approach would work as I think this would require a separate instance of the wrapper in pair with each instance of the Logger during runtime.  

I wonder if anybody has done something to that effect?  Any help appreciated.

Mike

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Re: dynamic routing based on level

[Jim Moore <mo...@gmail.com>]

Check the FAQ: http://logging.apache.org/log4j/docs/faq.html#2.9


On Tue, 31 Aug 2004 12:22:05 -0400, mike.yu@ubs.com <mi...@ubs.com> wrote:
> Hi There,
> 
> I am trying to use Log4j to figure out a way to dynamiclly use a different appender depending on the severity level.  For example, if the level of the message being logged is below ERROR I would just log it to a file.  But if the level is or above ERROR I want to be able to log it to, say, a database (or send a jms message).  What would be the strategy to handle this?
> 
> I guess one way is to extend the Logger class and override those log metheds (error, fatal, etc).  But I'd prefer to use delegation to handle it.  In other words, if I could wrapper around the Logger class, and the client will make call through the wrapper.  And the wrapper would internally enhance those methods (error, fatal, etc) and then delegate to the Logger.  But not sure if that approach would work as I think this would require a separate instance of the wrapper in pair with each instance of the Logger during runtime.
> 
> I wonder if anybody has done something to that effect?  Any help appreciated.
> 
> Mike

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