January 2011 - logback-user

Configure logback, Tomcat and webapps logging
by Giorgio Maria Santini 02 Feb '11

02 Feb '11

Hello, I'm trying to have my webapps logging with logback framework. I'm coming from a shell application where I've successfully had my logs handled by logback with no problems. Now I'm quite confusing using it with Tomcat. I've read about logback-access http://logback.qos.ch/access.html and it seems ok, but I don't understand where to put my config file for logback. Well, each of my webapps should have their own logback.xml configuration file, but in the manual it says to put the file in the global ${tomcat_home}/config folder, like to deny deploying a webapp with its configuration file under WEB-INF/classes path. There's a way to do it? I'm using Tomcat 6.0.30 and logback 0.9.24 Thanks a lot Giorgio Maria Santini

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Problem with ViewStatusMessagesServlet
by Maxime Carpentier 31 Jan '11

31 Jan '11

Hi, I've tried to follow online tutorial http://logback.qos.ch/access.html to view status message on ViewStatusMessagesServlet, but it keep saying "Could not find status manager" on the servlet's page...am i missing something ? i'm using logback 0.9.26, with maven/jetty plugin (exactly like logback-demo) my config : web-inf.xml : <servlet> <servlet-name>AccessViewStatusMessages</servlet-name> <servlet-class>ch.qos.logback.access.ViewStatusMessagesServlet</servlet-class> </servlet> <servlet-mapping> <servlet-name>AccessViewStatusMessages</servlet-name> <url-pattern>/lbAccessStatus</url-pattern> </servlet-mapping> logback-acess.xml : <configuration>  <statusListener class="ch.qos.logback.core.status.OnConsoleStatusListener" /> <appender name="STDOUT" class="ch.qos.logback.core.ConsoleAppender"> <encoder> <pattern>%h %l %u %user %date "%r" %s %b</pattern> </encoder> </appender> <appender-ref ref="STDOUT" /> </configuration> Thanxs for your help, Max

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Console Plugin for Eclipse status ?
by Grzegorz Szpetkowski 30 Jan '11

30 Jan '11

Hi, I found that Logback Console Plugin for Eclipse is compatible only up to LOGBack 0.9.9 (March 2008). I highly appreciate that actually there is version 0.9.28 (thanks a lot), but is this possible to improve Eclipse plugin (in other words to make it work with latest version of LOGBack) ? I don't have any knowledge/experience about developing Eclipse plugins, so I can't help with that. Also please add that plugin to Eclipse Marketplace (http://marketplace.eclipse.org) and perhaps update site (people are enjoying such things). Thanks, Grzegorz Szpetkowski

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Struggling with Tomcat6 and logback ...
by Gunnar Eketrapp 29 Jan '11

29 Jan '11

Hi! I have problems getting my webapp to start under tomcat6. I am currently facing problem such as ... Caused by: java.lang.ClassNotFoundException: org.codehaus.janino.ScriptEvaluator at org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1387) at org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1233) at java.lang.ClassLoader.loadClassInternal(ClassLoader.java:320) ... 37 more ... and I have placed following in tomcat's lib /usr/share/tomcat6/lib/logback-classic-0.9.28.jar /usr/share/tomcat6/lib/logback-core-0.9.28.jar Are there any known problems with logback and tomcat6 ? Thanks in advance, Gunnar Eketrapp

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Logback viewer
by Amit A Gadkari 28 Jan '11

28 Jan '11

We want to analysis files generated by Logback fileappender Which should be best log viewer for this? Do any log viewer provides web interface (servlet) for displaying files generated by logback file appender I understand that lilith is for online viewing of logevents generated by socket appender and for generating log file based on collected log events -- View this message in context: http://old.nabble.com/Logback-viewer-tp30789782p30789782.html Sent from the Logback User mailing list archive at Nabble.com.

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Logback viewer
by Gadkari Amit 28 Jan '11

28 Jan '11

We want to analysis files generated by Logback fileappender Which should be best log viewer for this? Do any log viewer provides web interface (servlet) for displaying files generated by logback file appender I understand that lilith is for online viewing of logevents generated by socket appender and for generating log file based on collected log events

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DBNameResolver
by Roy Cronise 28 Jan '11

28 Jan '11

Merritt: DBAppenderBase isn't in the loop, but has the event id column name(EVENT_ID) coded into it and doesn't use the DBNameResolver. The event id column name is needed when they create the prepared statement in DBAppenderBase and the database supports getGeneratedKeys. Maybe adding an abstract "getEventIdCol" in DBAppenderBase and implementing it in DBAppender(which has the DBNameResolver). Roy

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Failure to read logback.xml on Windows
by Matthias Treydte 27 Jan '11

27 Jan '11

Hello, I just found that the latest release (0.9.28) fails to find the logback.xml file on Windows: C:\temp\mwserv2>java -jar standalone-2.0-alpha-3-SNAPSHOT.jar -Dlog_level=DEBUG 15:09:48,612 |-INFO in ch.qos.logback.classic.LoggerContext[default] - Could NOT find resource [logback.groovy] 15:09:48,612 |-INFO in ch.qos.logback.classic.LoggerContext[default] - Could NOT find resource [logback-test.xml] 15:09:48,612 |-INFO in ch.qos.logback.classic.LoggerContext[default] - Found resource [logback.xml] at [jar:file:/C:/temp/mwserv2/standalone-2.0-alph a-3-SNAPSHOT.jar!/logback.xml] 15:09:48,628 |-ERROR in ch.qos.logback.core.joran.spi.ConfigurationWatchList@fe64b9 - URL [jar:file:/C:/temp/mwserv2/standalone-2.0-alpha-3-SNAPSHOT. jar!/logback.xml] is not of type file 15:09:48,691 |-INFO in ch.qos.logback.classic.joran.action.ConfigurationAction - debug attribute not set ... It seems to work on Linux, no other systems were tested. This problem does not occur with logback 0.9.27, so I think this is a regession. Kind regards, -Matthias PS: Thanks for this nice logging framework, and especially slf4j can be a life-saver! :-) -- For a successful technology, reality must take precedence over public relations, for nature cannot be fooled. (R.P. Feynman)

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DBNameResolver
by Roy Cronise 26 Jan '11

26 Jan '11

I am trying to use a DBNameResolver I've  written with DBAppender.  My tables and column names must be different than the default. I'm having an issue in the class DBAppenderBase since it looks like the "EVENT_ID" column name is used if generated keys are supported and doesn't use the name resolver. I couldn't find an open issue for this.  Is it a bug? Roy

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Configure logback to dump debug info when an error occurs?
by Satish Kumar 26 Jan '11

26 Jan '11

Hi, We currently use log4j and logging level in our production environment is set to ERROR, but in some cases having debug messages would help us in identifying the root causes of the errors. So wondering if it is possible to configure logback to dump debug info when an error occurs? My needs are the same as the one posted on stackoverflow: http://stackoverflow.com/questions/690431/how-to-configure-log4j-to-dump-de… Is there an appender in logback that provides this feature? Thanks, Satish

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