Based on your previous comments I assume one would show up out-of-the-box at
some point. Of course I need mine now so unfortunately I have to write one.
Any input on my questions below?
Thanks,
Nick
> Date: Thu, 27 Aug 2015 12:20:07 -0700
> Subject: Re: plugins
> From: garydgreg...@gmail.com
> To: log4j-user@logging.apache.org
>
> Note that I wrote such a filter, which is under review ATM here:
>
> - https://issues.apache.org/jira/browse/LOG4J2-1106
> - https://issues.apache.org/jira/browse/LOG4J2-1105
>
> Gary
>
> On Thu, Aug 27, 2015 at 11:51 AM, Nicholas Duane <nic...@msn.com> wrote:
>
> >
> >
> >
> > I've got a couple questions regarding plugins I'm hoping someone might be
> > able to help me with. I checked the docs and it's still not quite clear.
> >
> > 1. I'm unsure what to set printObject to in my Plugin annotation. From
> > http://logging.apache.org/log4j/2.x/manual/extending.html it says:
> >
> > "Specifying the printObject attribute with a value of "true" indicates
> > that a call to toString will format the arguments to the filter as the
> > configuration is being processed."
> >
> > which unfortunately doesn't clear things up any. I looked at the docs for
> > printObject and that doesn't say anything other than it's a Boolean and its
> > default is false.
> >
> > 2. I created a LevelRangeFiler and I'm trying to figure out how to get it
> > loaded by log4j. I read over the instructions on plugins located at
> > http://logging.apache.org/log4j/2.x/manual/plugins.html but since I'm a
> > java noob I'm still a bit lost. I'm wondering, if I just have a .java
> > class which I compile to a .class file, can that be used? If so, how?
> >
> > Below is the filter I wrote based on looking at the threshold filter
> > example at http://logging.apache.org/log4j/2.x/manual/extending.html.
> >
> > import org.apache.logging.log4j.core.filter.AbstractFilter;
> > import org.apache.logging.log4j.core.Filter;
> > import org.apache.logging.log4j.core.config.plugins.Plugin;
> > import org.apache.logging.log4j.core.config.plugins.PluginAttribute;
> > import org.apache.logging.log4j.core.config.plugins.PluginFactory;
> > import org.apache.logging.log4j.Level;
> > import org.apache.logging.log4j.core.LogEvent;
> > import org.apache.logging.log4j.core.Logger;
> > import org.apache.logging.log4j.Marker;
> > import org.apache.logging.log4j.message.Message;
> >
> > @Plugin(name="LevelRangeFilter", category="Core", elementType="filter",
> > printObject=true)
> > public class LevelRangeFilter extends AbstractFilter
> > {
> > private final Level minLevel;
> > private final Level maxLevel;
> >
> > public LevelRangeFilter(Level minLevel, Level maxLevel,
> > Filter.Result onMatch, Filter.Result onMismatch)
> > {
> > super(onMatch, onMismatch);
> > this.minLevel = minLevel;
> > this.maxLevel = maxLevel;
> > }
> >
> > private Result filter(Level level)
> > {
> > if (level.isMoreSpecificThan(this.minLevel) &&
> > level.isLessSpecificThan(this.maxLevel))
> > {
> > return this.onMatch;
> > }
> > return this.onMismatch;
> > }
> >
> > public Filter.Result filter(Logger logger, Level level,
> > Marker marker, String msg, Object[] params)
> > {
> > return filter(level);
> > }
> >
> > public Filter.Result filter(Logger logger, Level level,
> > Marker marker, Object msg, Throwable t)
> > {
> > return filter(level);
> > }
> >
> > public Filter.Result filter(Logger logger, Level level,
> > Marker marker, Message msg, Throwable t)
> > {
> > return filter(level);
> > }
> >
> > public Filter.Result filter(LogEvent event)
> > {
> > return filter(event.getLevel());
> > }
> >
> > @PluginFactory
> > public static LevelRangeFilter createFilter(
> > @PluginAttribute(value="minLevel",
> > defaultString="DEBUG") Level minLevel,
> > @PluginAttribute(value="maxLevel",
> > defaultString="FATAL") Level maxLevel,
> > @PluginAttribute(value="onMatch",
> > defaultString="NEUTRAL") Result onMatch,
> > @PluginAttribute(value="onMismatch",
> > defaultString="DENY") Result onMismatch)
> > {
> > return new LevelRangeFilter(minLevel, maxLevel, onMatch, onMismatch);
> > }
> > }
> >
> > Thanks,
> > Nick
> >
> >
> >
>
>
>
>
> --
> E-Mail: garydgreg...@gmail.com | ggreg...@apache.org
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