October 2012 - logback-user

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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(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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Externalized Logback configuration for web applications
by Perryn Fowler 01 Feb '13

01 Feb '13

Hello, I have a logging use case that I would think was relatively common, but that does not seem to be supported particularly well by logback. I wanted to see what the logback community thinks/advises. The details of the use case - I am writing java web apps to be deployed to JEE web containers. - I want the logging config to be external to the wars, so that I can use the same wars in different environments, but configure logging differently. - I want to be able to deploy several different wars to the same web container and have them use different logging configurations. The logback documentation seems to push towards either packaging the logback config in the wars, or sharing an external logging config between them. (Whereas I want separate external logging configuration for each war) I hope that makes sense. The JNDI support described here: http://logback.qos.ch/manual/loggingSeparation.html looks like it might be of use, but it does seem to require that the config files are placed in WEB-INF/classes and I would prefer they are completely external to the war. I have found a number of people who have coded up their own solutions, notably: http://blog.iprofs.nl/tag/logback/ and https://bowerstudios.com/node/896 That doesn't look too bad, but wondering what the community thinks of these approaches -- ----------------------- Perryn Fowler

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SMTPAppender, HTMLLayout with text/plain
by Filipe Sousa 14 Nov '12

14 Nov '12

Hi. For some reason I'm receiving email reports with mime type text/plain and my email client shows all the html code. I'm attaching a report sent by logback. I'm using javax.mail 1.4.4 and this logback (1.0.3) configuration <?xml version="1.0" encoding="UTF-8"?> <configuration scan="true" scanPeriod="5000"> <appender name="file" class="ch.qos.logback.core.rolling.RollingFileAppender"> <file>../logs/sama.log</file> <rollingPolicy class="ch.qos.logback.core.rolling.TimeBasedRollingPolicy"> <fileNamePattern>logFile.%d{yyyy-MM-dd}.log</fileNamePattern> <maxHistory>30</maxHistory> </rollingPolicy> <encoder> <pattern>%d [%thread] %-5level %logger{36} - %msg%n</pattern> </encoder> </appender> <appender name="mail" class="ch.qos.logback.classic.net.SMTPAppender"> <smtpHost>mail.ipb.pt</smtpHost> <to>filipe(a)ipb.pt</to> <from>noreply(a)ipb.pt</from> <subject>[sama]: %logger{20} - %m</subject> <layout class="ch.qos.logback.classic.html.HTMLLayout" /> <filter class="ch.qos.logback.classic.filter.ThresholdFilter"> <level>WARN</level> </filter> </appender> <logger name="org.eclipse.jetty" level="WARN" /> <logger name="org.apache.cxf" level="WARN"/> <logger name="pt.ipb.sama" level="WARN" /> <root level="WARN"> <appender-ref ref="file" /> <appender-ref ref="mail"/> </root> </configuration> Thanks -- Filipe Sousa

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Quotes doubled in logs?
by David Balažic 06 Nov '12

06 Nov '12

Hi! I the logs of our application I noticed that quotes get doubled. For example: - app received xml contents: <?xml version=''1'' ?> ... Those are two single quotes before the 1 and then two single quotes after it. That is not valid XML so the app would refuse it, but is does not. So the doubled quotes must appears somewhere in the logging. We use slf4j 1.6.1 and logback 0.9.28. Could this be something in logback? Did anyone else experience something similar? Regards, David

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Re: [logback-user] Jetty: How to get multiple web applications log to a common log file
by gaurav419＠gmail.com 04 Nov '12

04 Nov '12

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Jetty: How to get multiple web applications log to a common log file
by Gaurav Kumar 01 Nov '12

01 Nov '12

Hi, I am using Jetty webserver and logback for logging. I have a scenario with multiple Web Applications (so multiple wars into jetty/webapps dir). Each war has its own copy of logback-classic, logback-core and slf4j-api. There is a common copy of logback.xml in jetty/resources (pasted below). My intent is to maintain a logfile named "testapp.<date>.log" which should be used by all the wars for logging. Further, I want a rollover of this file on every startup. I am able to achieve this except that each war is trying to create its own version of the log file so when each war is loaded it creates its own logfile archiving the earlier logfile created by the earlier war. This continues till all wars are loaded thus creating these many log files per startup. The archived files are are named "testapp.<date>.log.<time in millisec>. Is there a way to ask all wars to log into the same file? *logback.xml file content:* *<configuration> <timestamp key="dateStr" datePattern="yyyy-MM-dd" timeReference="contextBirth"/>--> <timestamp key="timeStr" datePattern="HHmmssSSS" timeReference="contextBirth"/>--> <appender name="STDOUT" class="ch.qos.logback.core.ConsoleAppender"> <encoder> <pattern>%date{MMM dd}, %date{yyyy hh:mm:ss a} %class %method:%line %n%level: %message%n </pattern> </encoder> </appender> <appender name="FILE" class="ch.qos.logback.core.rolling.RollingFileAppender"> <file>${jetty.home}/logs/Baywatch.${dateStr}.log</file> <rollingPolicy class="ch.qos.logback.core.rolling.TimeBasedRollingPolicy">  <fileNamePattern>${jetty.home}/logs/Baywatch.%d{yyyy-MM-dd}.log.${timeStr}</fileNamePattern>  <maxHistory>30</maxHistory> <cleanHistoryOnStart>true</cleanHistoryOnStart>  <timeBasedFileNamingAndTriggeringPolicy class="com.bmc.ola.utils. LogbackLogTriggeringPolicy"/> </rollingPolicy> <encoder> <pattern>%date{MMM dd}, %date{yyyy hh:mm:ss a} %class %method:%line %n%level: %message%n </pattern> </encoder> </appender> <root level="INFO"> <appender-ref ref="FILE" /> </root> </configuration>* *LogbackLogTriggeringPolicy.java is:* *@NoAutoStart public class LogbackLogTriggeringPolicy<E> extends DefaultTimeBasedFileNamingAndTriggeringPolicy<E> { @Override public void start() { super.start(); nextCheck = 0L; addInfo("gktest123"); isTriggeringEvent(null, null); try { tbrp.rollover(); } catch (RolloverFailure e) { //Do nothing } } } * Thanks.

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alternate configuration files on the classpath
by Steve Cohen 31 Oct '12

31 Oct '12

In the logback manual, http://logback.qos.ch/manual/configuration.html#configFileProperty, there is the following section > Specifying the location of the default configuration file as a system property > > If you wish, you can specify the location of the default configuration file with a system property named logback.configurationFile. The value of this property can be a URL, a resource on the class path or a path to a file external to the application. > > java -Dlogback.configurationFile=/path/to/config.xml chapters.configuration.MyApp1 There is no example of using this property to refer to a configuration file on the classpath, for example, an alternate configuration file deployed in an application jar file. This is my requirement. I have two executables, the main one, and an auto-installer for it, code for which lives in the same jar file, with each executable launched by its own batch file. I tried placing an alternate config file on the root of the classpath inside the jar file (at the same directory as logback.xml). this does not seem to work. What is the correct format for defining -Dlogback.configurationFile= for a resource located in a jar file on the classpath or, for that matter, any other classpath resource more generically?

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