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Include file element with wildcard match
by Dirk Högemann 15 Jul '14

15 Jul '14

Hello, is there a way to include files in the logback configuration file using a wildcard match? For example: *<include file="/src/main/java/chapters/configuration/*-includedConfig.xml"/>* The requirement would be than to read all files matching the *-includeConfig.xml pattern. Is there a way to configure this, or, if not, can anyone give me a starting point to extend the library with custom code for this? Best regards, Dirk

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Apache Sling Commons Log - Integrating Logback with OSGi
by Chetan Mehrotra 14 Jul '14

14 Jul '14

Hi, As part of Apache Sling project we have created a Sling Commons Log module which integrates Logback with OSGi. It might be interesting for Logback and/or slf4j users, see below for more info. Chetan Mehrotra Sling Commons Log =============== doc - http://sling.apache.org/documentation/development/logging.html release - http://sling.apache.org/site/downloads.cgi source - http://svn.apache.org/repos/asf/sling/trunk/bundles/commons/log/ Features: ------------- 1. LogBack configuration can be provided via Logback config xml or via OSGi configuration enabling runtime modification of configuration. 2. Supports Appenders registered as OSGi Services 3. Supports Filters and TurboFilters registered as OSGi Services 4. Support providing Logback configuration as fragments through OSGi Service Registry 5. Support for referring to Appenders registered as OSGi services from within Logback config 6. Exposes Logback runtime state through the Felix WebConsole Plugin 7. Web UI based log configuration with type ahead support for Logger categories Apart from Slf4j API bundle the Sling Commons Log bundle has no dependency on other Sling bundles and can be used in any OSGi framework. Maven: ----------- <dependency> <groupId>org.apache.sling</groupId> <artifactId>org.apache.sling.commons.log</artifactId> <version>4.0.0</version> </dependency> We hope that it might be useful to broader user community specially while using Logback in OSGi environments Chetan Mehrotra PS: Apologies for cross posting. Sling Commons Log might be useful to both user communities hence sending it to both

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Logback contrib and json/jackson layout
by Ricardo Borillo 08 Jul '14

08 Jul '14

Hi all, I'm trying to use logback-contrib JSON layout: https://github.com/qos-ch/logback-contrib The problem is that seems to be defined for logback-core 1.0.9 and we are using 1.1.1 currently in our application. Is there any possibility to upgrade? Do you guys want me to issue a pull request? --- Salut, ==================================== Ricardo Borillo Domenech ~ @borillo http://xml-utils.com

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Android pro guard warnings building with ant
by Chris Kelly 08 Jul '14

08 Jul '14

Hello, I've been building an app with log back-android and have it configured to use file and logcat appenders. It works exactly as I want when building a debug version via Eclipse ADT or with 'ant debug'. However, with a release build and Proguard enabled, I have ~50 warnings locating referenced classes from the javax.xml.Stream package. As far as I can tell, this package doesn't existin in android. Is there any additional dependency I have overlooked? I have downloaded both the slf4j and logback-android jar's and added the documented Proguard rules to my project as well. Below is a sample of my 'ant release' build log where project1 is my app and dependency is an android library project. [proguard] Reading input... [proguard] Reading program jar [/Users/chris/Projects/android/Android/project1/bin/proguard/original.jar] [proguard] Reading program jar [/Users/chris/Projects/android/Android/dependency/bin/classes.jar] [proguard] Reading program jar [/Users/chris/Projects/android/Android/Licensing/bin/classes.jar] [proguard] Reading program jar [/Users/chris/Projects/android/Android/dependency/libs/slf4j-api-1.7.6.jar] [proguard] Reading program jar [/Users/chris/Projects/android/Android/dependency/libs/logback-android-1.1.1-2.jar] [proguard] Reading program jar [/Users/chris/Projects/android/Android/project1/libs/android-support-v4.jar] [proguard] Reading library jar [/Users/chris/Projects/android/adt-bundle-mac-x86_64-20140624/sdk/platforms/android-19/android.jar] [proguard] Initializing... [proguard] Warning: ch.qos.logback.core.joran.event.stax.BodyEvent: can't find referenced class javax.xml.stream.Location [proguard] Warning: ch.qos.logback.core.joran.event.stax.BodyEvent: can't find referenced class javax.xml.stream.Location [proguard] Warning: ch.qos.logback.core.joran.event.stax.BodyEvent: can't find referenced class javax.xml.stream.Location [proguard] Warning: ch.qos.logback.core.joran.event.stax.BodyEvent: can't find referenced class javax.xml.stream.Location [proguard] Warning: ch.qos.logback.core.joran.event.stax.EndEvent: can't find referenced class javax.xml.stream.Location [proguard] Warning: ch.qos.logback.core.joran.event.stax.EndEvent: can't find referenced class javax.xml.stream.Location [proguard] Warning: ch.qos.logback.core.joran.event.stax.EndEvent: can't find referenced class javax.xml.stream.Location [proguard] Warning: ch.qos.logback.core.joran.event.stax.EndEvent: can't find referenced class javax.xml.stream.Location [proguard] Warning: ch.qos.logback.core.joran.event.stax.StartEvent: can't find referenced class javax.xml.stream.events.Attribute [proguard] Warning: ch.qos.logback.core.joran.event.stax.StartEvent: can't find referenced class javax.xml.stream.events.Attribute [proguard] Warning: ch.qos.logback.core.joran.event.stax.StartEvent: can't find referenced class javax.xml.stream.Location Thanks for the help, Chris

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Cannot configure Pax logging to use the loggback config instead of the standard log4j properties like syntax
by Srikanth Hugar 03 Jul '14

03 Jul '14

I have some services in tomcat and trying to move to apache karaf. I have a existing service which uses logback for logging configuration. I tried to make same configuration in osgi, but could not achieve. Any please let me know what could be the problem? org.ops4j.pax.logging.cfg org.ops4j.pax.logging.logback.config.file=${karaf.home}/etc/logback.xml logback.xml is available at ${karaf.home}/etc/ --. Apache Karaf version : 3.0 , pax logging 1.7.1 which is packaged with karaf from build. After above configuration change, my karaf.log contents are : Jul 02, 2014 4:21:32 PM org.apache.karaf.main.lock.SimpleFileLock lock ..................................................................... INFO: Lock acquired Jul 02, 2014 4:21:32 PM org.apache.karaf.main.Main$KarafLockCallback lockAquired INFO: Lock acquired. Setting startlevel to 100 -- Srikanth www.srikanthugar.in

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Stopping LoggerContext while using AsyncAppender
by Paresh 27 Jun '14

27 Jun '14

I am trying to use AsyncAppender in a standalone application which currently uses RollingFileAppender. AsyncAppender documentation mentions that , Upon application shutdown or redeploy, AsyncAppender must be stopped in order to stop and reclaim the worker thread and to flush the logging events from the queue. This can be achieved by stopping the LoggerContext which will close all appenders, including any AsyncAppender instances. At the time of stoping the application, we use 'kill' command. Had it been a web application, i could have written code to stop the LoggerContext from within contextDestroyed() of ServletContextListener. So,i would like to know, 1. Is it necessary to stop the LoggerContext while using AsyncAppender. 2. Wont stopping the application, stop the worker thread and flush logging events in queue 3. Any other way it can be performed.

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Web View of Log Entries
by Chris DaMour 20 Jun '14

20 Jun '14

Anyone ever come across a library that would work something like a servlet i can drop into my web app that exposes a /logging or some like path to view the last N log messages? Open to ideas..but NOT looking to send my logs to a third party service (ala splunk)

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logback-access and %I for thread name
by Wolfey 20 Jun '14

20 Jun '14

Hi, I would like to migrate from org.apache.catalina.valves.AccessLogValve with pattern %h %l %u %t '%r' %s %b %I %D to ch.qos.logback.access.tomcat.LogbackValve. I couldn't find support for %I for logging the thread name in logback-access. Am I missing something or is this not possible? Regards, Wolfey

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How to format (mask certain strings) when using SyslogAppender
by Kumar Pandey 19 Jun '14

19 Jun '14

All I extend ch.qos.logback.classic.PatternLayout and override doLayout() to mask certain things like credit card number using reg-ex. This works great with FileAppender and ConsoleAppender. However while configuring SyslogAppender I found out that we can only use suffixPattern to format the content and PatternLayout cannot be specified. Here is the explanation on Logback site -- Given that the format of a syslog request follows strict rules, you cannot freely specify the layout to be used with SyslogAppender. However, you can use SuffixPattern option instead to influence the contents of the message sent to the syslog daemon. So what are my options to change the string content before its sent to SyslogAppender ? I'm on logback version 1.0.3 . Thanks Kumar

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IllegalStateException caused by logback 1.1.2
by Gena Makhomed 19 Jun '14

19 Jun '14

Hello, All! to prevent "AsynAppender thread leak" as described in http://jira.qos.ch/browse/LOGBACK-867 I use recommended in documentation http://logback.qos.ch/manual/appenders.html#AsyncAppender approach: public class LogbackShutdownHook implements ServletContextListener { // ... @Override public void contextDestroyed(ServletContextEvent sce) { logger.info("******* stop logger *******"); LoggerContext loggerContext = (LoggerContext) LoggerFactory.getILoggerFactory(); loggerContext.stop(); } } web.xml: <listener> <listener-class>com.pb.ivrcgate.util.servlet.LogbackShutdownHook</listener-class> </listener> but this causes IllegalStateException in tomcat log: May 28, 2014 3:36:36 PM org.apache.catalina.loader.WebappClassLoader loadClass INFO: Illegal access: this web application instance has been stopped already. Could not load ch.qos.logback.core.status.WarnStatus. The eventual following java.lang.IllegalStateException at org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1612) at org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1571) at ch.qos.logback.classic.LoggerContext.noAppenderDefinedWarning(LoggerContext.java:175) at ch.qos.logback.classic.Logger.callAppenders(Logger.java:267) at ch.qos.logback.classic.Logger.buildLoggingEventAndAppend(Logger.java:442) at ch.qos.logback.classic.Logger.filterAndLog_0_Or3Plus(Logger.java:396) at ch.qos.logback.classic.Logger.log(Logger.java:788) at org.apache.commons.logging.impl.SLF4JLocationAwareLog.debug(SLF4JLocationAwareLog.java:133) at org.apache.http.impl.conn.PoolingHttpClientConnectionManager.shutdown(PoolingHttpClientConnectionManager.java:345) at org.apache.http.impl.conn.PoolingHttpClientConnectionManager.finalize(PoolingHttpClientConnectionManager.java:168) at java.lang.ref.Finalizer.invokeFinalizeMethod(Native Method) at java.lang.ref.Finalizer.runFinalizer(Finalizer.java:101) at java.lang.ref.Finalizer.access$100(Finalizer.java:32) at java.lang.ref.Finalizer$FinalizerThread.run(Finalizer.java:190) in my webapp org.apache.httpcomponents:httpclient:4.3.3 used. sourse PoolingHttpClientConnectionManager.java line #345 is: this.log.debug("Connection manager is shutting down"); ============================================================== how to prevent IllegalStateException in tomcat log? I am doing something wrong, or this is bug in logback code? 1) may be method shutdown() should be added to logback, and after shutdown - all events and messages should be silently ignored? 2) or better add to logback new "fallback mode" - in this mode all async appenders should be stopped and all buffers disabled, all events written to logs and flushed immediately, without delays. "fallback mode" can be used in contextDestroyed() methods or in low memory conditions, before near OutOfMemoryError to prevent any logging events lost in buffers and queues. 3) ................................... something else? -- Best regards, Gena

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