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https://issues.apache.org/jira/browse/LOG4J2-3334?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17495096#comment-17495096
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Ralph Goers commented on LOG4J2-3334:
-------------------------------------
I have created a test for this in 2.17.2-SNAPSHOT and it works as expected. Can
you please retest using the latest snapshot?
> Configurator.setLevel adding an incomplete LoggerConfig
> -------------------------------------------------------
>
> Key: LOG4J2-3334
> URL: https://issues.apache.org/jira/browse/LOG4J2-3334
> Project: Log4j 2
> Issue Type: Bug
> Components: Core
> Affects Versions: 2.17.1
> Reporter: Mircea Lemnaru
> Priority: Major
>
> I am trying to set the log levels for my application programatically and I
> was using the method: *Configurator.setLevel*
>
> {code:java}
> private static boolean setLevel(final String loggerName, final Level level,
> final Configuration config) {
> boolean set;
> LoggerConfig loggerConfig = config.getLoggerConfig(loggerName);
> if (!loggerName.equals(loggerConfig.getName())) {
> // TODO Should additivity be inherited?
> loggerConfig = new LoggerConfig(loggerName, level, true);
> config.addLogger(loggerName, loggerConfig);
> loggerConfig.setLevel(level);
> set = true;
> } else {
> set = setLevel(loggerConfig, level);
> }
> return set;
> } {code}
> In my applicationI have the following loggers structure:
>
> *com.myapp.service* -> set on TRACE from XML config
> Then I have the class: com.myapp.service.common.ServiceUtils with a logger
> defined for it like this: {{Logger log =
> LogManager.getLogger(this.getClass());}}
> And in this class, a bunch of log statements on *TRACE*
> Then I am trying to set the log level to *INFO* for the whole
> com.myapp.service.common package. To suppress the *TRACE* logs for example.
> If I do this , Configurator will do the following:
> # will try to fetch a LoggerConfig for the *common* package
> # because there is nothing defined for that package only for the parent ...
> it will return the config for that package
> # because the names differ it will create a new LogConfig with the new
> logger name and level but {color:#FF0000}without any appenders or appenders
> refs{color}
> # then it will add this to the config and reload loggers
> At this moment the logs from the end class are not printed anymore.
> Now , I again set the level for com.myapp.service.common logger , but this
> time to {*}TRACE{*}. In order to re-enable the logs.
> Still , I can't see anything in the logs.
> After investigating it seems that adding the LoggerConfig without the
> appenders copied from parent , is causing this behaviour.
> If for example I change the setLevel method to also add the appender refs and
> appenders when creating the LoggerConfig object , everything is good and
> logging works as expected.
> Thank you
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