On Tue, Dec 27, 2011 at 12:07 PM, ceki <ceki@qos.ch> wrote:

Hi César,

My response is inline.

On 27.12.2011 10:19, César Álvarez Núñez wrote:

Hi all,

Our application makes an intensive use of Profiler
(http://www.slf4j.org/extensions.html#profiler).
It has been very useful during the development stage an we would like to
keep it at production stage but there is a problem since its "log level"
is hard-coded to "debug".

Currently the profiler use the same application class logger so if log
level is set to "info" in our production environment we lose the
"profiler" log :-(

Alternatives:

* Use different loggers for application and profiler >-->> It requires

to refactoring all the code and remember that any new Profiler that
will be used need to set a custom logger instead of the default
class logger.

* Open a request to modify Profiler in order to set a custom log level.

This makes sense. See first if the TurboFilter described below
approach works for you. Otherwise, please file a bug report requesting
for this feature.

* Keep minimum log level to "debug" and make use of a Filter to accept

any log event with marker=PROFILER, otherwise only accept if log
level >= INFO >-->> It only will work with LogBack but Profiler
belongs to SLF4J so it should work with any bridge.

Have you considered using a TurboFilter [1]? Here is a TurboFilter
which will enable profiler logs for all logging levels.

import ch.qos.logback.classic.Level;
import ch.qos.logback.classic.Logger;
import ch.qos.logback.classic.turbo.TurboFilter;
import ch.qos.logback.core.spi.FilterReply;
import org.slf4j.Marker;
import org.slf4j.MarkerFactory;

public class ProfilingEnabler extends TurboFilter {

Marker profilerMarker =
MarkerFactory.getMarker(Profiler.PROFILER_MARKER_NAME);

@Override
public FilterReply decide(Marker marker, Logger logger, Level level,
String format, Object[] params, Throwable t){
if(marker == profilerMarker) return FilterReply.ACCEPT;
else return FilterReply.NEUTRAL;
}
}

[1] http://logback.qos.ch/manual/filters.html#TurboFilter

/César.

Cheers,
--
Ceki
http://twitter.com/#!/ceki
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