Mike,
Did you resolve this issue?
Gary
On Wed, Apr 3, 2019 at 1:57 PM Mike Garcia <mikegarcia2...@hotmail.com>
wrote:
> I'm trying to add a log4j2 file appender at runtime. I have a process
> that has it's own log4j2.xml config file which logs to a rolling file
> appender and the console. This process will receive requests from other
> processes. It creates an output folder that I want to create a log file in
> for the output during that run. So, I add a file appender in code, then
> remove it when the job is complete. This worked in log4j 1.x but doesn't
> work now that I updated to log4j2. Here's the code to add the appender:
>
> final LoggerContext loggerContext = (LoggerContext)
> LogManager.getContext(false);
> final Configuration config = loggerContext.getConfiguration();
> FileAppender appender =
>
> FileAppender.newBuilder().withName("MyFileAppender").withAppend(false)
> .withFileName(new File(myOutputDirectory,
> "log.txt").toString())
> .withLayout(
> PatternLayout.newBuilder().withPattern("%d [%t]
> %-5p %c - %m%n").build())
> .setConfiguration(loggerContext.getConfiguration()).build();
> appender.start();
> config.addAppender(appender);
>
>
> loggerContext.getRootLogger().addAppender(loggerContext.getConfiguration().getAppender(appender.getName()));
> loggerContext.updateLoggers();
>
> The log.txt file is create but nothing is written to it. I also close the
> appender like this:
>
> if (appender != null && loggerContext != null)
> {
> appender.stop();
> Configuration config = loggerContext.getConfiguration();
> config.getRootLogger().removeAppender("OOEngineFileAppender");
> loggerContext.getRootLogger().removeAppender(appender);
> loggerContext.updateLoggers();
> }
>
> Any idea what I'm doing wrong?
>
> BTW, I turned on log4j2 debug via the command line switch and I see this
> output when I add the new appender:
>
> DEBUG StatusLogger Not in a ServletContext environment, thus not
> loading WebLookup plugin.
> DEBUG StatusLogger PluginManager 'Converter' found 44 plugins
> DEBUG StatusLogger Starting OutputStreamManager
> SYSTEM_OUT.false.false-2
> DEBUG StatusLogger Starting FileManager
> e:\temp\OutputDir\TaskRun_20190402_215311_122\log.txt
>
> Thanks,
> -Mike
>
>
