I don't think the implementation is the issue, though if/when I get my plugin
loading and it doesn't work I will certainly try to compare against what Gary
wrote. Right now I'm just trying to figure out how to get my plugin loaded.
I've got my class file, LevelRangeFilter.java which I compiled to a .class
file. It resides in the same directory as my HelloWorld.class file which
contains my "main". I was hoping my plugin would get loaded but it doesn't
seem to be. What's the easiest way for me to get it loaded? Right now when I
run my program I'm seeing the following error from log4net:
2015-08-27 15:23:09,682 ERROR File contains an invalid element or attribute
"LevelRangeFilter"
Here is my config:
<?xml version="1.0" encoding="UTF-8"?>
<Configuration status="trace" verbose="true" packages="LevelRangeFilter">
<CustomLevels>
<CustomLevel name="INFOM1" intLevel="399"/>
<CustomLevel name="INFOP1" intLevel="401"/>
</CustomLevels>
<Appenders>
<File name="info" fileName="info.log">
<PatternLayout>
<Pattern>%d %p %c{1.} [%t] %m%n</Pattern>
</PatternLayout>
<LevelRangeFilter minLevel="INFO" maxLevel="INFO" onMatch="ACCEPT"/>
</File>
</Appenders>
<Loggers>
<Logger name="HelloWorld" level="ALL">
<AppenderRef ref="info"/>
</Logger>
<Root>
</Root>
</Loggers>
</Configuration>
Thanks,
Nick
> Subject: Re: plugins
> From: ralph.go...@dslextreme.com
> Date: Thu, 27 Aug 2015 14:20:28 -0700
> To: log4j-user@logging.apache.org
>
> Can’t you just compare what you wrote to what Gary wrote? If you build your
> project then it should get packaged in a jar and automatically have the file
> Log4j uses to quickly load the plugin.
>
> Ralph
>
> > On Aug 27, 2015, at 12:50 PM, Nicholas Duane <nic...@msn.com> wrote:
> >
> > 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
> >> Java Persistence with Hibernate, Second Edition
> >> <http://www.manning.com/bauer3/>
> >> JUnit in Action, Second Edition <http://www.manning.com/tahchiev/>
> >> Spring Batch in Action <http://www.manning.com/templier/>
> >> Blog: http://garygregory.wordpress.com
> >> Home: http://garygregory.com/
> >> Tweet! http://twitter.com/GaryGregory
> >
>
>
>
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