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Date: Thu, 20 Jan 2005 18:34:06 -0500
From: Patrick Lacson <placson@gmail.com>
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To: Tomcat Users List <tomcat-user@jakarta.apache.org>
Subject: Re: reload log4j.properties on-the-fly?
References: <207fa8f050121100215234d6d@mail.gmail.com>
In-Reply-To: <207fa8f050121100215234d6d@mail.gmail.com>
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Andy,

Try the following to enable the log4j watchdog:

    public static void configure(final String configFile, final long 
delay, final Logger logger) {
        PropertyConfigurator.configureAndWatch(configFile,delay);
        FileWatchdog watcher = new FileWatchdog(configFile) {
            public void doOnChange() {
                new PropertyConfigurator().doConfigure(
                    filename, LogManager.getLoggerRepository()
                );
                if (logger != null) {
                    logger.info("Re-read configuration file " + filename);
                }
            }
        };
       
        watcher.setDelay(delay);
        watcher.start();
    }


Andy Kriger wrote:

>I am running Tomcat 5.5 with log4j logging (log4j.properties in common/classes).
>
>Is it possible to make changes to the log4j properties and have the
>changes reloaded on-the-fly instead of having to restart Tomcat in
>order to pick up changes? This would be very useful for those times
>debug level logging or specific class logging is needed where
>generally that level of logging is not required.
>
>thx
>andy
>
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