> Is it possible to get a list of appenders (independent of
> loggers) and control their output (level = off...level = ???)
> so as to be able to control them globally (for all loggers to
> use), or do I have to do each appender for each logger in a
> series of foreach loops?
Appenders are only available through their logger.
foreach(log4net.ILog log in log4net.LogManager.GetCurrentLoggers())
{
foreach(log4net.Appender.IAppender appender in
((log4net.Repository.Hierarchy.Logger)log.Logger).Appenders)
{
do something with the appender...
}
}
It is possible to attach the same appender instance to more than one
logger, therefore you may want to add all the appenders to a collection
and unique them. Appender Names are not currently guaranteed to be
unique.
Nicko
>
> Thanks,
>
> Dave Witt
>
> ps. If you haven't figured it out yet, I am trying to build
> a simple utility to manage the operation of loggers (levels)
> and appenders (on/off) to help our support folks manage
> log4net at a higher level than us as developers do :-)
>
>
>
> At 07:29 PM 9/26/2004, you wrote:
> >
> > > Thanks for the quick reply!!!!!! How about 2 more questions...?
> > >
> > > 1) I am using loglevel = log.Logger.Repository.Threshold.Name
> > > as the mechanism to get a logger's level. Is that the
> best way to
> > > get the level for a given logger?
> >
> >That will give you the level for the whole repository not for the
> >logger.
> >
> >You need to do:
> >
> >((log4net.Repository.Hierarchy.Logger)log.Logger).Level.Name
> >
> >The log4net API is optimised for the configurator rather than
> >programmatic configuration, this does mean that there is
> rather a lot
> >of casting required to do it programmatically.
> >
> >
> > > 2) Does it hurt (do bad things) to call the DOMConfigurator more
> > > than once? I have been whenever I started a logger
> (didn't mean to)
> > > but everything seems to be working.
> >
> >Well it will hurt performance, but it is safe to reload the
> >configuration. You can even ask the DOMConfigurator to watch
> a file for
> >changes and reload the configuration automatically.
> >
> >Cheers,
> >Nicko
> >
> >
> > >
> > > Once again, THANKS FOR THE QUICK REPLY!!!!!!
> > >
> > > Dave Witt
> > >
> > > ps. You and your group have done a wonderful job on this!!!!!!!!
> > >
> > >
> > >
> > >
> > > At 06:29 PM 9/26/2004, you wrote:
> > > >Dave,
> > > >
> > > > > Is there a method that allows me to set a logger level
> > > without going
> > > > > through the repository?
> > > >
> > > >You can set the Level property on the
> > > >log4net.Repository.Hierarchy.Logger object. You can do this
> > > in a number
> > > >of ways but the simplest is:
> > > >
> > > >log4net.Repository.Hierarchy.Logger logger =
> > > >((log4net.Repository.Hierarchy.Logger)log4net.LogManager.GetL
> >ogger("foo"
> > > >).Logger);
> > > >logger.Level = logger.Repository.LevelMap["DEBUG"];
> > > >
> > > >
> > > >This lets you set the level for an individual logger.
> > > >
> > > >
> > > > >
> > > > > 2) Is there a way to enable/disable appenders
> programmatically?
> > > >
> > > >Appenders have a Threshold level (or at least the
> > > AppenderSkeleton does
> > > >and appenders should be derived from that) that you can set to
> > > >Level.Off which will prevent any logging from occurring
> > > through that appender.
> > > >
> > > >log4net.Repository.Hierarchy.Logger logger =
> > > >((log4net.Repository.Hierarchy.Logger)log4net.LogManager.GetL
> >ogger("foo"
> > > >).Logger);
> > > >log4net.Appender.AppenderSkeleton appender =
> > >
> >(log4net.Appender.AppenderSkeleton)logger.GetAppender("myAppender")
> > > >;
> > > >appender.Threshold = Level.Off.
> > > >
> > > >
> > > >This will not shutdown the appender, e.g. the FileAppender
> > > will still
> > > >hold a write lock on the output file. You may want instead to
> > > >remove the appender from the Logger and close it.
> > > >
> > > >
> > > >log4net.Repository.Hierarchy.Logger logger =
> > > >((log4net.Repository.Hierarchy.Logger)log4net.LogManager.GetL
> >ogger("foo"
> > > >).Logger);
> > > >log4net.Appender.IAppender appender =
> > > logger.GetAppender("myAppender");
> > > >logger.RemoveAppender(appender); appender.Close();
> > > >
> > > >An appender cannot be revived after it has been closed.
> > > >
> > > >
> > > >Cheers,
> > > >Nicko
> > >
> > >
> > >
> > >
>
>
>
>
