[logback-user] runtime configuration

[Ceki Gulcu]

This is a known bug which was recently corrected. See
http://jira.qos.ch/browse/LBCLASSIC-83 for details.

Setting logger levels to null is fairly easy to do. However, loggers cannot be 
removed due to consistency reasons. If you'd like loggers to be nulled during 
reset, then may I ask you to create a jira issue?

mateusz jedruch wrote:
> Actually I need two things:
> 
> * set the level of logger to null
> * reset the configuration of logger context to be the same as the one
> when application started (before any runtime changes)
> 
> BTW using the ch.qos.logback.classic.jmx.Configurator is possible to get
> NPE:
> 
>         Configurator config = new Configurator(lc);
>         config.setLoggerLevel("foo.bar", "null");  //ok, level of
> foo.bar is null
>         config.setLoggerLevel("foo.bar", "info");  //ok, level of
> foo.bar is INFO
>         config.setLoggerLevel("foo.bar", "null"); //NPE
> 
> Stack trace:
> Exception in thread "main" java.lang.NullPointerException
> 	at ch.qos.logback.classic.Logger.setLevel(Logger.java:193)
> 	at ch.qos.logback.classic.jmx.Configurator.setLoggerLevel(Configurator.java:92)
>         ...
> -mateusz
> 
> On Thu, Dec 4, 2008 at 4:23 PM, Ceki Gulcu <ceki at qos.ch> wrote:
>> LoggerContext.reset (aka shutdownAndReset) does not touch logger levels. This is
>>  a relic from log4j, which behaves in the same way. Would you like the level
>> values nulled as well?
>>
>> mateusz jedruch wrote:
>>> Hi,
>>> I am preparing something like web interface for my app logging configuration,
>>> similar to yours JMX configurator.
>>> As I noticed when you add new logger in the runtime then it is impossible
>>> to remove it (set its log level null). I have checked the shutdownAndReset()
>>> and id doesn't work.
>>>
>>> I have attached the source code which should explain you what I would like
>>> achieved. Could you check it?
>>>
>>> Thanks,
>>> -mateusz
>>>
>>> package foo;
>>>
>>> import org.slf4j.Logger;
>>> import org.slf4j.LoggerFactory;
>>>
>>> import ch.qos.logback.classic.Level;
>>> import ch.qos.logback.classic.LoggerContext;
>>> import ch.qos.logback.classic.jmx.Configurator;
>>>
>>> public class Main {
>>>
>>>     private static final Logger LOGGER = LoggerFactory.getLogger(Main.class);
>>>
>>>     public static void main(String[] args) {
>>>         LOGGER.info("Message #1"); //shouldn't be logged, LOGGER's
>>> level is null so takes root's off level
>>>         LoggerContext lc = (LoggerContext) LoggerFactory.getILoggerFactory();
>>>         ch.qos.logback.classic.Logger log = lc.getLogger(LOGGER.getName());
>>>         log.setLevel(Level.INFO);
>>>         LOGGER.info("Message #2"); //should be logged, LOGGER's level is info
>>>         Configurator config = new Configurator(lc);
>>>         config.reload(); //shutdownAndReset() is call inside this method
>>>         LOGGER.info("Message #3"); // why it is logged here ? LOGGER's
>>> level is still INFO, shouldn't be null ?
>>>     }
>>> }
>>>
>>> logback.xml:
>>>
>>> <configuration>
>>> <appender name="STDOUT" class="ch.qos.logback.core.ConsoleAppender">
>>>     <layout class="ch.qos.logback.classic.PatternLayout">
>>>         <Pattern>%d{HH:mm:ss.SSS} [%thread] %5level %logger{18} -
>>> %msg%n</Pattern>
>>>     </layout>
>>> </appender>
>>>
>>> <root>
>>>     <level value="off" />
>>>     <appender-ref ref="STDOUT" />
>>> </root>
>>> </configuration>
>>> _______________________________________________
>>> Logback-user mailing list
>>> Logback-user at qos.ch
>>> http://qos.ch/mailman/listinfo/logback-user
>>>
>> --
>> Ceki Gülcü
>> Logback: The reliable, generic, fast and flexible logging framework for Java.
>> http://logback.qos.ch
>> _______________________________________________
>> Logback-user mailing list
>> Logback-user at qos.ch
>> http://qos.ch/mailman/listinfo/logback-user
>>
> _______________________________________________
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> Logback-user at qos.ch
> http://qos.ch/mailman/listinfo/logback-user
> 

-- 
Ceki Gülcü
Logback: The reliable, generic, fast and flexible logging framework for Java.
http://logback.qos.ch