[logback-dev] [JIRA] Updated: (LBCLASSIC-300) Add ability to manually specify configuration BEFORE autoconfiguration
noreply-jira at qos.ch
Wed Oct 19 20:46:12 CEST 2011
[ http://jira.qos.ch/browse/LBCLASSIC-300?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Phil updated LBCLASSIC-300:
CliTest.java is the simple runnable class that I profiled with yourkit.
> Add ability to manually specify configuration BEFORE autoconfiguration
> Key: LBCLASSIC-300
> URL: http://jira.qos.ch/browse/LBCLASSIC-300
> Project: logback-classic
> Issue Type: Improvement
> Affects Versions: 0.9.29
> Reporter: Phil
> Assignee: Logback dev list
> Priority: Minor
> Attachments: CliTest.java, CliTest.txt
> In order to make logback initialization faster, I would like the ability to programmatically configure logback and avoid the logic that happens in ContextInitializer.autoConfig().
> Specifically, refer to this stack that occurs when getILoggerFactory() is initially called...
> ch.qos.logback.classic.util.ContextInitializer.autoConfig() line: 147
> org.slf4j.impl.StaticLoggerBinder.init() line: 85
> org.slf4j.impl.StaticLoggerBinder.<clinit>() line: 55
> org.slf4j.LoggerFactory.bind() line: 121
> org.slf4j.LoggerFactory.performInitialization() line: 111
> org.slf4j.LoggerFactory.getILoggerFactory() line: 268
> Now, for some background...
> I am using logback for a fast executing CLI program. Right now, initializing logback dominates the execution time of my CLIs. For example...
> When I started with logback, I was using logback.xml. If one of my CLIs took 1.5 seconds to run, I would see that initializing logback was taking 1 of those seconds (I used the yourkit profiler to identify this). 66% of the execution time is unacceptable.
> So, I switched from using logback.xml to programatically configuring logback in Java with the following code..
> LoggerContext loggingContext = (LoggerContext) LoggerFactory.getILoggerFactory();
> FileAppender<ILoggingEvent> fileAppender = new FileAppender<ILoggingEvent>();
> Logger rootLogger = loggingContext.getLogger(Logger.ROOT_LOGGER_NAME);
> This reduced the initialization time quite a bit. Now logback initialization is taking about .3 seconds. This is much better.
> However, I still think this can be improved by completely skipping the auto config logic.
> The initial call to LoggerFactory.getILoggerFactory() will attempt to auto configure logback.... which searches for groovy files, xml files, and falls back to BasicConfigurator. I don't need this auto configuration logic, since I am just going reset it and configure it myself anyway.
> I would like the ability to programmatically configure logback and totally avoid this auto configuration.
> Ideally I would be able to construct a LoggerContext instance, or the root Logger, or something. Then allow slf4j to bind to it without going through the auto config steps.
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