Robert, It's right that what you think about the classloader for each module. In OSGi environment, every bundle has its own classloader. It seems I have to wait for the availability of 2.0 version of sysout-over-slf4j.
For the error caused by '>', thanks for your analysis, I check the bundle org.apache.felix.shell.tui which provides a simple, text-based user interface for the Apache Felix Shell and update it from 1.0.2 to 1.4.1, the latest version. Then the latest one works well with Sysout-over-slf4j. In 1.4.1 version, as you say, it indeed print '>' without a line break. Perhaps the older version has some problem. Thanks a lot. > -----Original Message----- > From: logback-user-boun...@qos.ch [mailto:logback-user-boun...@qos.ch] > On Behalf Of Robert Elliot > Sent: Thursday, July 21, 2011 8:39 PM > To: logback users list > Subject: Re: [logback-user] how to redirect system.out/err to a file? > > I'm afraid I know very little about OSGi; I believe it uses separate class > loaders > for each module? In which case it will not work very well with > sysout-over-slf4j at all. I'd need to know more about OSGi in general and how > SLF4J works with OSGi's class loading in particular in order to tackle it. > > In terms of the error - it looks as if something is printing to System.out > without > a line break at the end sufficiently often that the buffer it maintains > inside is > blowing up. I'd guess that felix is doing something like: > > System.out.println("message\n>"); > > in order to leave a > style prompt after each response. Because that doesn't > end with a line break sysout-over-slf4j assumes you want it to be built up > into a > single log message - which is presumably getting so large it blows up with an > OutOfMemory error. > > Sysout-over-slf4j 2 takes a different (and safer) approach which should solve > this; it just needs me to a) document it and b) sort out the maven reporting > now I've moved to Maven 3. > > > ----- Original Message ----- > > From: "Zhangguangchao" <zhangguangc...@huawei.com> > > To: "logback users list" <logback-user@qos.ch> > > Cc: "Qinyanxin" <qinyan...@huawei.com> > > Sent: Thursday, 21 July, 2011 8:03:57 AM > > Subject: Re: [logback-user] how to redirect system.out/err to a file? > > Hi, David, > > Thanks for your information, it helps a lot. > > > > But it seems that sysout-over-slf4j has not supported OSGi yet. And I > > can't redirect the system.out/err from various bundle which has its > > own classloader in OSGi environment. If sysout-over-slf4j works like > > log4j-over-slf4j, that will be very cool. > > > > Do you have any other advice ? Thanks. > > > > Another question is when I redirect felix-main system.out into a file, > > it casts an exception as follows: > > > > 2011-07-21 14:21:48,142 ERROR [Felix Shell TUI] java.lang.ThreadGroup > > [LogLevel.java:88] Exception in thread "Felix Shell TUI" > > java.lang.OutOfMemoryError: Java heap space > > 2011-07-21 14:21:48,143 ERROR [Felix Shell TUI] java.lang.ThreadGroup > > [LogLevel.java:88] at java.util.Arrays.copyOf(Arrays.java:2882) > > 2011-07-21 14:21:48,143 ERROR [Felix Shell TUI] java.lang.ThreadGroup > > [LogLevel.java:88] at > > > java.lang.AbstractStringBuilder.expandCapacity(AbstractStringBuilder.java:100 > ) > > 2011-07-21 14:21:48,143 ERROR [Felix Shell TUI] java.lang.ThreadGroup > > [LogLevel.java:88] at > > java.lang.AbstractStringBuilder.append(AbstractStringBuilder.java:390) > > 2011-07-21 14:21:48,143 ERROR [Felix Shell TUI] java.lang.ThreadGroup > > [LogLevel.java:88] at > > java.lang.StringBuilder.append(StringBuilder.java:119) > > 2011-07-21 14:21:48,143 ERROR [Felix Shell TUI] java.lang.ThreadGroup > > [LogLevel.java:88] at > > > uk.org.lidalia.sysoutslf4j.context.LoggerAppenderImpl.append(LoggerAppende > rImpl.java:52) > > 2011-07-21 14:21:48,144 ERROR [Felix Shell TUI] java.lang.ThreadGroup > > [LogLevel.java:88] at > > > uk.org.lidalia.sysoutslf4j.system.SLF4JPrintStreamDelegate.delegatePrint(SLF4 > JPrintStreamDelegate.java:68) > > 2011-07-21 14:21:48,144 ERROR [Felix Shell TUI] java.lang.ThreadGroup > > [LogLevel.java:88] at > > > uk.org.lidalia.sysoutslf4j.system.SLF4JPrintStreamImpl.print(SLF4JPrintStreamI > mpl.java:251) > > 2011-07-21 14:21:48,144 ERROR [Felix Shell TUI] java.lang.ThreadGroup > > [LogLevel.java:88] at > > org.apache.felix.shell.tui.Activator$ShellTuiRunnable.run(Activator.java:133) > > 2011-07-21 14:21:48,144 ERROR [Felix Shell TUI] java.lang.ThreadGroup > > [LogLevel.java:88] at java.lang.Thread.run(Thread.java:619) > > > > And in the log file there are lots of '>' which appears on the felix > > terminal console. It seems that '>' is printed by felix and then > > redirected to sysout-over-slf4j. However it has too many '>' and > > SLF4JPrintStreamImpl goes down. Am I right? > > Is this a bug of sysout-over-slf4j? > > > > Here is a list I use: felix 3.2.0, slf4j-api-1.6.1, logback-* -0.9.28 > > and sysout-over-slf4j-1.0.2. > > Any advice? > > > > > > From: logback-user-boun...@qos.ch [mailto:logback-user-boun...@qos.ch] > > 代表 David Roussel > > at: 2011年7月20日 2:57 > > Receiver: logback users list > > Subject: Re: [logback-user] how to redirect system.out/err to a file? > > > > Dominic, > > > > That work mentioned by rob was done, and he sent a notification to > > this this a while back. > > > > You can find all the instructions here: > > http://projects.lidalia.org.uk/sysout-over-slf4j/ > > > > There are some restrictions, so do read the docs. > > > > David > > > > On 19 Jul 2011, at 07:42, Zhangguangchao wrote: > > > > > > > > Hi, > > Is there a configuration to redirect STDOUT to a file? > > By the way, I found the same question asked in > > http://www.qos.ch/pipermail/logback-user/2009-June/001141.html and I > > wanna know whether it is fixed and how. And I didn't found the new > > feature about ConsoleAppender configuration changed in Logback News. > > > > Thanks a lot. > > > > Dominic Zhang > > > > _______________________________________________ > > Logback-user mailing list > > Logback-user@qos.ch > > http://qos.ch/mailman/listinfo/logback-user > > > > _______________________________________________ > > Logback-user mailing list > > Logback-user@qos.ch > > http://qos.ch/mailman/listinfo/logback-user > _______________________________________________ > Logback-user mailing list > Logback-user@qos.ch > http://qos.ch/mailman/listinfo/logback-user _______________________________________________ Logback-user mailing list Logback-user@qos.ch http://qos.ch/mailman/listinfo/logback-user
