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https://issues.apache.org/jira/browse/LOG4J2-468?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13851830#comment-13851830
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Andre Bogus commented on LOG4J2-468:
------------------------------------
What would the runtime semantics for "adding a new Logger" be?
* Getting a Logger object from the LogManager - You can already do that, just
call LogManager.getLogger(). No new feature here.
* Setting the log level for a logger at runtime: You may want to look into the
JMX extensions, which I haven't tested yet, but the docs promise to allow
things like setting log levels.
* Adding ore redirecting an appender. This will need a property in your
configuration, along with a routing appender and calling reconfigure. For
example:
{noformat}<?xml version="1.0" encoding="UTF-8" ?>
<configuration status="warn">
<properties>
<property name="filename">$${sys:LOG_FILENAME}</property>
</properties>
<appenders>
<Routing name="routing">
<Routes pattern="$${ctx:zwangsgruppe}">
<Route>
<File name="file" fileName="${filename}">
<PatternLayout pattern="..."/>
</File>
</Route>
</Routes>
</Routing>
</appenders>
...
</configuration>
{noformat}
(Yeah, it's ugly) Then in the code, you can do:
System.setProperty("LOG_FILENAME", logFilename);
((org.apache.logging.log4j.core.LoggerContext)LogManager.getContext()).reconfigure();
Not very nice either, but it should work.
> Dynamically (programmatically) add logger in Log4j2
> ---------------------------------------------------
>
> Key: LOG4J2-468
> URL: https://issues.apache.org/jira/browse/LOG4J2-468
> Project: Log4j 2
> Issue Type: New Feature
> Reporter: Dean Anderson
>
> Please add the ability for someone to dynamically add a new Logger
> programmatically.
> Thank you.
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