[logback-user] Retrieving the log filenames

[David Roussel]

You probably don't want commons logging on your classpath.  See here: http://www.slf4j.org/legacy.html


On 29 Mar 2011, at 13:53, Clemens Siebler wrote:

> Thanks Ceki, that could be the issue. I currently have a bunch of jars in my classpath, that all have to do with logging:
> 
> commons-logging-api.jar
> commons-logging.jar
> log4j.jar
> logback-classic-0.9.21.jar
> logback-core-0.9.21.jar 
> slf4j-api-1.6.1.jar
> 
> I use Jetty+Spring Framework and the latter one requires Log4j and the commons-logging jars. The part of the application that I wrote, only uses Logback+Slf4j. Any ideas how to get away with this?
> 
> 
> On Tue, Mar 29, 2011 at 2:32 PM, Ceki Gulcu <ceki at qos.ch> wrote:
> Hello Clemens,
> 
> Lance's suggestion is almost certaint on target. Do check your classpath to see if there are multiple instances of logback-classic lying around.
> --
> Ceki
> 
> On 29.03.2011 14:13, Clemens Siebler wrote:
> Thanks for the hint Lance! I feel like this could be the issue. However,
> I haven't managed to actually find a solution to it. I tried starting my
> application with -verbose:class, but I can only see one entry of:
> [Loaded ch.qos.logback.classic.LoggerContext from
> file:/yyy/logback-classic-0.9.21.jar]. I suppose there should be
> multiple of these, if that actually is the problem? Thanks for your help!
> 
> 
> On Fri, Mar 25, 2011 at 4:54 PM, Lance White <lance.white at logicscope.com
> <mailto:lance.white at logicscope.com>> wrote:
> 
>     >> However, when I try to use this code outside of my test
>    environement, I get the following Exception on the first line:
>     >> java.lang.ClassCastException:
>    ch.qos.logback.classic.LoggerContext cannot be cast to
>    ch.qos.logback.classic.LoggerContext
> 
>    This is usually a multiple classloader problem.
> 
>    Lance
> 
>    *From:*logback-user-bounces at qos.ch
>    <mailto:logback-user-bounces at qos.ch>
>    [mailto:logback-user-bounces at qos.ch
>    <mailto:logback-user-bounces at qos.ch>] *On Behalf Of *Clemens Siebler
>    *Sent:* 24 March 2011 16:16
>    *To:* logback users list
>    *Subject:* Re: [logback-user] Retrieving the log filenames
> 
>    Ok, I figured out how to get at least the base logfile:
>             LoggerContext ctx = (LoggerContext)
>    LoggerFactory.getILoggerFactory();
>             for (Logger l : ctx.getLoggerList()) {
>                 ch.qos.logback.classic.Logger log =
>    (ch.qos.logback.classic.Logger) l;
>                 Iterator<Appender<ILoggingEvent>> it =
>    log.iteratorForAppenders();
>                 while (it.hasNext()) {
>                     Appender<ILoggingEvent> ap = it.next();
>                     if (ap instanceof FileAppender<?> || ap instanceof
>    RollingFileAppender<?>) {
>                         FileAppender<?> fileAppender = (FileAppender<?>)ap;
>                         System.out.println(fileAppender.getFile());
>                     }
>                 }
>             }
> 
>    However, when I try to use this code outside of my test
>    environement, I get the following Exception on the first line:
>    java.lang.ClassCastException: ch.qos.logback.classic.LoggerContext
>    cannot be cast to ch.qos.logback.classic.LoggerContext
> 
>    Any ideas? I'm currently using Jetty, slf4j and logback. However, it
>    seems that there are still some dependencies on log4j in Jetty that
>    I can't get rid of...
> 
>    On Tue, Mar 22, 2011 at 10:23 AM, Clemens Siebler
>    <clemens.siebler at googlemail.com
>    <mailto:clemens.siebler at googlemail.com>> wrote:
> 
>    As far as log4j goes, the getAppender function can be used. However,
>    I have not managed to get this one working for logback. Any ideas?
> 
>    On Mon, Mar 21, 2011 at 3:42 PM, Clemens Siebler
>    <clemens.siebler at googlemail.com
>    <mailto:clemens.siebler at googlemail.com>> wrote:
> 
>    Let's assume the user only changes the logging levels/filter during
>    runtime, nothing else.
> 
>    On Mon, Mar 21, 2011 at 3:32 PM, David Roussel
>    <nabble at diroussel.xsmail.com <mailto:nabble at diroussel.xsmail.com>>
> 
>    wrote:
> 
>    Would a change notifier be told of the new filename?  I'm not sure,
>    but it's worth a check.
> 
> 
>    On 21 Mar 2011, at 13:56, Clemens Siebler
>    <clemens.siebler at googlemail.com
>    <mailto:clemens.siebler at googlemail.com>> wrote:
> 
>     > Hi all,
>     >
>     > I'm currently using Logback (SLF4J) with a TimeBasedRollingPolicy
>    defined in logback.xml. Everything works fine, however, I'd like to
>    retrieve the filenames of the current logging session since the
>    application started. The user can obviously change the log filenames
>    and policies in logback.xml, so I don't want them hardcoded in the
>    source. My goal is to retrieve these filenames straight within Java
>    in order to do some more processing with them. Is there any
>    possibility in logback/slf4j to retrieve those names?
>     >
>     > I currently aquire the logger via:
>     > Logger logger = LoggerFactory.getLogger(Test.class);
>     >
>     > but obviously, this Logger object in particular doesn't provide
>    such functionality. Any ideas?
>     >
>     > Thanks in advance,
>     > Clemens
> 
> 
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