March 2013 - logback-user - mailman3.qos.ch

Re: [logback-user] Logback suddenly stopped logging
by Andreas Dejung 19 Jun '14

19 Jun '14

I had the same problem and I think I know why J Solaris does interrupt IO blocked thread which then causes the OutputStreamAppender to catch the IOException in line 218 (version 0.9.24). I actually run version 0.9.18 but this part has not change so I guess it will behave the same way. If we look at http://bugs.sun.com/bugdatabase/view_bug.do?bug_id=4385444 InterruptedIOException should not be required by platform specification (sol) And log4j https://issues.apache.org/bugzilla/show_bug.cgi?id=44157 InterruptedIOException ignored by log4j I think it should be solved the same why } catch (InterruptedIOException iioe){ //give the thread a changes to act on interruption and then carry on Thread.currentThread().interrupt(); } catch (IOException ioe) { // as soon as an exception occurs, move to non-started state // and add a single ErrorStatus to the SM. this.started = false; addStatus(new ErrorStatus("IO failure in appender", this, ioe)); } I could not find the jira entry mentioned in this thread therefore I write it here J BTY the jvm option -XX:-UseVMInterruptibleIO does prevent the interruption by solaris but that's only a workaround and not solving the problem ;) Cheers Andy

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Re: [logback-user] Add header-lines to each log file
by Schoeftner, Thomas 20 May '14

20 May '14

Sorry to bump this topic again. Any ideas? Thanks, -Tom

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Replacing Tomcat7 Logging with Logback?
by James Carr 17 Sep '13

17 Sep '13

Hi All, Is there a good tutorial or documentation on replacing Tomcat's default logging with logback? So far my searches turn up http://logback.qos.ch/access.html which only seems to work with access logs, not the actual server logging itself. Thanks, James

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Is grouped (deferred) log statements from same threads possible using logback?
by janolaveide＠gmail.com 22 Apr '13

22 Apr '13

I have read about the Mapped Diagnostic Context, and although useful, the log statements from different threads still appear interspersed in the output. What I would like is to have all log statements from a thread outout consecutively when that thread is done (and I know what and when "done" is) For example : Thread A starts at time T-Astart, performs logging at various points, and is done at T-Adone. Before A is done, at time T-Bstart (T-Adone < T-Bstart < T-Adone) another thread B starts processing, does the same kind of logging and finishes at T-Bdone. Now, I would like all logging statements from thread A to appear before the logging statements from Thread B, and not interspersed as the MDC examples I have seen. Is this kind of deferred, grouped logging possible with logback ? -- View this message in context: http://logback.10977.n7.nabble.com/Is-grouped-deferred-log-statements-from-… Sent from the Users mailing list archive at Nabble.com.

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Oldest archive files not removed when using SizeAndTimeBasedFNATP when rolling over and there are multiple archive files for the oldest interval.
by Jan-Olav Eide 22 Apr '13

22 Apr '13

Hello, using the following programmatic configuration there seems to be a problem with how the maxHistory argument is implemented. I roll over multiple times withing the time interval (every minute here), creating the following files : (maxHistory = 3) trace.log (active file) trace-2013-03-13-16.14.0.log.zip trace-2013-03-13-16.13.0.log.zip trace-2013-03-13-16.12.2.log.zip trace-2013-03-13-16.12.1.log.zip trace-2013-03-13-16.12.0.log.zip The nex time rollover occurs, the 16.13.0.log.zip file is removed, and not the oldest ones (12.{1,2,3} as I would have expected. Is this intended behaviour ? Or is it a problem with my configuration ? public static Logger createTimeAndSizeRollingLogger(String fileBase, String maxSize, int maxHistory, String resolutionPattern) { LoggerContext loggerContext = (LoggerContext) LoggerFactory.getILoggerFactory(); RollingFileAppender<ILoggingEvent> appender = new RollingFileAppender<ILoggingEvent>(); appender.setContext(loggerContext); appender.setFile(fileBase + ".log"); TimeBasedRollingPolicy<ILoggingEvent> timePolicy = new TimeBasedRollingPolicy<ILoggingEvent>(); timePolicy.setFileNamePattern(fileBase + "_%d{" + resolutionPattern + "}-%i.log.zip"); timePolicy.setContext(loggerContext); timePolicy.setMaxHistory(maxHistory); timePolicy.setParent(appender); appender.setRollingPolicy(timePolicy); SizeAndTimeBasedFNATP<ILoggingEvent> rollingPolicy = new SizeAndTimeBasedFNATP<ILoggingEvent>(); rollingPolicy.setMaxFileSize(maxSize); rollingPolicy.setTimeBasedRollingPolicy(timePolicy); rollingPolicy.setContext(loggerContext); timePolicy.setTimeBasedFileNamingAndTriggeringPolicy(rollingPolicy); timePolicy.start(); rollingPolicy.start(); PatternLayoutEncoder encoder = new PatternLayoutEncoder(); encoder.setContext(loggerContext); encoder.setPattern("%msg%n"); encoder.start(); appender.setEncoder(encoder); appender.start(); Logger logger = loggerContext.getLogger(fileBase); logger.setLevel(Level.TRACE); logger.addAppender(appender); StatusPrinter.print(loggerContext); return logger; }

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Why are encoder-less appenders not consistently allowed?
by Stuart Rossiter 19 Apr '13

19 Apr '13

I have a need to dynamically adjust appenders at run-time to use a custom Layout. What I really want is to have encoder-less appenders set up (via the config file) and then add the appropriate LayoutWrappingEncoder programmatically. This works fine for a basic FileAppender. *However*, this fails for a ConsoleAppender, or (interestingly) for a FileAppender created dynamically by a SiftingAppender. (You get errors that an encoder has to be set and that the init method can't be invoked.) Is there a reason for this inconsistency? I suspect it might just be that there is inconsistent handling internally of when an appender is started(??). (I assume the init method that is being referred to in the error messages is start().) (The context is that this is logging from a simulation. I want all log messages to be prefixed with the simulation time, which is something that is only available within the application, and differs per logged message. I guess I could use a SimTime MDC key which is updated before each message logged, but that's a bit clumsy. Doing it generically inside a Layout, independent of the rest of the simulation code, is much better.) Stuart -- ________________________________ Stuart Rossiter

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Timing of sifting appender dynamic appender instantiation
by Stuart Rossiter 11 Apr '13

11 Apr '13

The manual states that appenders get dynamically added by SiftingAppender when the relevant MDC key is altered: "Whenever the "userid" MDC key is assigned a new value, a new FileAppender instance will be built from scratch." However, I found that it was only created when I logged my first message using a relevant Logger. (And confirmed this by using an OnConsoleStatusListener in my configuration file.) Is this a bug? A documentation error? This is a problem because I need to programmatically adjust this appender (from the 'base' set up by the configuration file) before I use it. I currently have to log a spurious message first so that the appender is created, and then adjust it. Stuart -- ________________________________ Stuart Rossiter

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Multi thread logging for Sift appender
by Sumit Anvekar 11 Apr '13

11 Apr '13

Hi all, I am using logback in a webapplication and logs work fine. However i also have another timer task started on application start up. logs from this timer task are getting displayed correctly on console using ConsoleAppender, however they do not appear in my rolling file sift appender (other logs from my webapplication are logged fine). Can anyone suggest what could be the problem? -- Happy Coding, Sumit

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(Important) Dynamically change the scan period
by Yihya Hugirat 08 Apr '13

08 Apr '13

hi all, i have migrated to logback to be able to change the log levels dynamically. i'm testing it now with calssfish 3.01 and somehow it is not working when i change the levels in logback.xml there nothing happens. by deploying from netbeans i get the following: |-INFO in ch.qos.logback.classic.turbo.ReconfigureOnChangeFilter@11bfee0 - Will scan for changes in [[C:\Dokumente und Einstellungen\user_Home\Eigene Dateien\NetBeansProjects\WS-LDAP\build\web\WEB-INF\classes\logback.xml]] every 15 seconds. but when i change the levels in this file nothing happens Any help will be appreciated Hugirat -- إِنَّ الَّذِينَ يُحِبُّونَ أَنْ تَشِيعَ الْفَاحِشَةُ فِي الَّذِينَ آمَنُوا لَهُمْ عَذَابٌ أَلِيمٌ فِي الدُّنْيَا وَالآخِرَةِ وَاللَّهُ يَعْلَمُ وَأَنْتُمْ لا تَعْلَمُونَ My public key please use it when you contact me: هذا مفتاحي العام الرجاء أستخدامه عند الإتصال بي: 09BA B710 4B98 ECDA 8C0A 6CB1 2E1E CF88 6A12 F2C3

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Logback in combination with slf4j: which versions should I use ?
by stlecho 08 Apr '13

08 Apr '13

Hello, With regards to the combination of logback-core and slf4j-api. If I want to use v1.0.11 of logback-core, which version of slf4j-api should I use to avoid the getResourceOccurenceCount error ? -logback-core v0.9.30 in combination with slf4j-api v1.6.3 works perfectly -logback-core v1.0.11 in combination with slf4j-api v1.6.3 results in java.lang.NoSuchMethodError: ch.qos.logback.core.util.Loader.getResourceOccurenceCount(Ljava/lang/String;Ljava/lang/ClassLoader;)Ljava/util/List; -logback-core v1.0.11 in combination with slf4j-api v1.7.5 works perfectly result in java.lang.NoSuchMethodError: ch.qos.logback.core.util.Loader.getResourceOccurenceCount(Ljava/lang/String;Ljava/lang/ClassLoader;)Ljava/util/List; Regards, Stefan Lecho -- View this message in context: http://logback.10977.n7.nabble.com/Logback-in-combination-with-slf4j-which-… Sent from the Users mailing list archive at Nabble.com.

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