Perhaps the simplest thing to do is to add the packages attribute to your
log4j2.xml configuration file. Set the value to the package of your custom
plugin.
<Configuration status="trace" packages="com.mycomp.pluginpackage">
...
Remko
Sent from my iPhone
> On 2015/08/28, at 6:42, Nicholas Duane <nic...@msn.com> wrote:
>
>
>
>
> 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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