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From Chathura Widanage <chath...@adroitlogic.com>
Subject Re: Migrating from log4j to log4j2
Date Thu, 03 Dec 2015 05:34:59 GMT
Gary,
Thank you very much.
Is there a way to setLayout and setThreshold of an appender at runtime
using log4j 2, like we used to do with log4j 1.

Thanks.

On Thu, Dec 3, 2015 at 11:00 AM, Gary Gregory <garydgregory@gmail.com>
wrote:

> On Wed, Dec 2, 2015 at 12:12 PM, Chathura Widanage <
> chathura@adroitlogic.com
> > wrote:
>
> > We are developing a product(ESB) that will be used by an end user. In our
> > product we have provided an interface to alter the logging patterns
> > according the user preference in run time is self. We were able to do
> this
> > using log4j1. But I can't find a way to alter the pattern of appender in
> > run time using log4j2.
> >
> > In case of Console appender, we want to collect information about the
> > appenders, so user can view them in a GUI which is provided by our
> product.
> >
> > Please let me know if there is a possible way of doing these thing using
> > log4j2.
> >
> > I would be glad if you can mention the log4j2 methods or procedures that
> > can be used to performs the exact same function of the following log4j1
> > methods.
> >
> > setlayout
> >
> >
> https://logging.apache.org/log4j/1.2/apidocs/org/apache/log4j/Appender.html#setLayout(org.apache.log4j.Layout)
> >
> >
> https://logging.apache.org/log4j/1.2/apidocs/org/apache/log4j/AppenderSkeleton.html#setLayout(org.apache.log4j.Layout)
> >
> > setThreshold
> >
> >
> https://logging.apache.org/log4j/1.2/apidocs/org/apache/log4j/AppenderSkeleton.html#setThreshold(org.apache.log4j.Priority)
>
>
> Setting the log level is a topic usually address by calling the
> Configurator class.
>
> Gary
>
>
> >
> >
> > getTarget
> >
> >
> https://logging.apache.org/log4j/1.2/apidocs/org/apache/log4j/ConsoleAppender.html#getTarget()
> >
> > getEncoding
> >
> >
> https://logging.apache.org/log4j/1.2/apidocs/org/apache/log4j/ConsoleAppender.html#getFollow()
> >
> > Thanks in advance
> >
> >
> > On Wed, Dec 2, 2015 at 7:32 PM, Ralph Goers <ralph.goers@dslextreme.com>
> > wrote:
> >
> > > I’m not sure what you are trying to do with the pattern is necessary.
> The
> > > latest version of Log4j supports a PatternSelector that should provide
> > what
> > > you need.
> > >
> > > I am not sure why the updating of the ConsoleAppender is necessary. Why
> > > can’t that just be configured?
> > >
> > > Ralph
> > >
> > > > On Dec 2, 2015, at 12:29 AM, Chathura Widanage <
> > chathura@adroitlogic.com>
> > > wrote:
> > > >
> > > > Hi all,
> > > >
> > > > I am in a process of migrating an application from log4j1 to log4j2.
> > > > I have successfully migrated 98% of the application but I am stuck
> at a
> > > > point where it is required to alter the configurations of an Appender
> > at
> > > > the run time.
> > > >
> > > > Below is the piece of code that we used in log4j1
> > > >
> > > > public void updateAppender(AppenderView view) {
> > > >        auditLog.info("Updating the appender with the name : {}, of
> the
> > > > instance", view.getName());
> > > >        AppenderSkeleton appender = (AppenderSkeleton)
> > > > LogManager.getRootLogger().getAppender(view.getName());
> > > >
> > > >        if (view.getPattern() != null) {
> > > >            appender.setLayout(new PatternLayout(view.getPattern()));
> > > >        }
> > > >
> > > >        if (!"null".equals(view.getThreshold())) {
> > > >            appender.setThreshold(Level.toLevel(view.getThreshold()));
> > > >        }
> > > >    }
> > > >
> > > > Since in log4j2, there is no method called setLayout and setThreshold
> > in
> > > > Appender class, Can I know a way to implement the above functionality
> > > using
> > > > the log4j2 APIs.
> > > >
> > > > Further I want to migrate the following piece of code,
> > > >
> > > > else if (appender instanceof ConsoleAppender) {
> > > >            ConsoleAppender consoleAppender = (ConsoleAppender)
> > appender;
> > > >            properties.put(CONSOLE_APPENDER_TARGET,
> > > > consoleAppender.getTarget());
> > > >            properties.put(CONSOLE_APPENDER_ENCODING,
> > > > consoleAppender.getEncoding());
> > > >            properties.put(CONSOLE_APPENDER_FOLLOW,
> > > > String.valueOf(consoleAppender.getFollow()));
> > > >        }
> > > >
> > > > Here I don't find getTarget,getEncoding,getFollow methods in
> > > > ConsoleAppender class.
> > > >
> > > > Can some one please lead me to the way which I can implement the
> above
> > > > functionalities using log4j2 APIs.
> > > >
> > > > Thanks,
> > > > Chathura
> > >
> > >
> > >
> > > ---------------------------------------------------------------------
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> > > For additional commands, e-mail: log4j-user-help@logging.apache.org
> > >
> > >
> >
>
>
>
> --
> E-Mail: garydgregory@gmail.com | ggregory@apache.org
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