Re: [aspectj-users] LTW in JBoss 4

[Bernhard Berger <berber@xxxxxx>]

Thank you very much, Andy, for the link. I added to the configuration
-debug as well as -showWeaveInfo. This results in a long list of
messages where he tells that he weaves the application classes, for
instance:

[UnifiedClassLoader@...] debug weaving 'com.example.foo.Bar'

But he does not apply the aspect I have defined (there is no weaveinfo
in the log). 

Bernhard

On Di, 2011-05-24 at 22:45 -0700, Andy Clement wrote:
> Hi Bernhard,
> 
> You could refer to my article here for all the debug options around ltw:
> 
> http://andrewclement.blogspot.com/2009/02/load-time-weaving-basics.html
> 
> Beyond -verbose it talks about -debug - this option will actually tell
> you what classes are being passed to the weaver for weaving.
> 
> I'm sorry I can't answer specific info about JBoss though, there may
> be something extra that needs configuring if it is using some kind
> of unusual classloader hierarchies.
> 
> Andy
> 
> 2011/5/24 Bernhard Berger <berber@xxxxxx>:
> > On Di, 2011-05-24 at 16:31 +0200, Pasturel wrote:
> >> Le 24/05/2011 15:37, Bernhard Berger a écrit :
> >> > Hi,
> >> >
> >> > I have some problems with instrumenting a java enterprise application,
> >> > which perhaps is not a AspectJ issue. Maybe someone of you can help me.
> >> > Currently I'm trying to trace an enterprise application deployed to a
> >> > JBoss 4 server. My idea is to add a trace aspect to every call within a
> >> > certain package to extract a run-time call-graph.
> >> > I have implemented a small aspect and created a pointcut matching all
> >> > classes:
> >> >      pointcut myMethodCalls(): within(com.example.*)&&  call(* *(..));
> >> >
> >> > The aspect snippets call a tracer class before and after the call:
> >> > before() : myMethodCalls() {
> >> >    TraceMonitor.enterMethod(thisJoinPoint,
> >> > thisEnclosingJoinPointStaticPart);
> >> > }
> >> >
> >> > after() : myMethodCalls() {
> >> >    TraceMonitor.leaveMethod(thisJoinPoint);
> >> > }
> >> >
> >> > When instrumenting a commandline application, everything is working fine
> >> > and I receive the result I expect. But when I copy this to JBoss the
> >> > aspect is not added to the classes. BTW: I'm using LTW because I want
> >> > AspectJ to add the aspect to all classes (even to the one that are
> >> > generated at runtime).
> >> >
> >> > The only result I can see are tons of log messages like this:
> >> > [2@63cd66ea] info AspectJ Weaver Version 1.6.11 built on Tuesday Mar 15,
> >> > 2011 at 15:31:04 GMT
> >> > [2@63cd66ea] info register classloader org.jboss.mx.util.MBeanProxyExt
> >> > $2@63cd66ea
> >> > [2@63cd66ea] info using configuration /C:/test/bin/aop.xml
> >> > [2@63cd66ea] info register aspect de.uni_bremen.st.berber.aspectj.Trace
> >> >
> >> > which shows me that AspectJ is running but the fact that the classes are
> >> > not instrumented shows me, that I missed something. Perhaps some
> >> > configuration settings for JBoss. Can someone give me a hint?
> >> >
> >> > Thanks in advance
> >> >
> >> > Bernhard
> >>
> >> I suppose that the file /C:/test/bin/aop.xml declares the aspect. turn
> >> on  verbose mode in aop.xml
> >>
> >> Other way, JBoss has its own AOP weaver, => javassist . Perhaps a
> >> precedence between aspectj and javassist
> >
> > My aop.xml contains the line:
> >
> > <weaver options="-verbose" />
> >
> > and I'm enhanced the run script to add the following parameters to
> > jboss:
> >
> > -javaagent:c:\test\aspectjweaver.jar -Daj.weaving.verbose=true
> > -Dorg.aspectj.weaver.showWeaveInfo=true -Daj.weaving.debug=true
> > -Daj.weaving.trace=true
> > -Dorg.aspectj.weaver.loadtime.configuration=aop.xml -classpath "%
> > JBOSS_CLASSPATH%;c:\test\bin"
> >
> > The aop.xml and the aspect can be found in c:\test\bin. And in the log
> > there are very often the lines:
> >
> > 2011-05-25 06:32:35,277 ERROR [STDERR] [2@41d47b2b] info AspectJ Weaver
> > Version 1.6.11 built on Tuesday Mar 15, 2011 at 15:31:04 GMT
> > 2011-05-25 06:32:35,277 ERROR [STDERR] [2@41d47b2b] info register
> > classloader org.jboss.mx.util.MBeanProxyExt$2@41d47b2b
> > 2011-05-25 06:32:35,277 ERROR [STDERR] [2@41d47b2b] info using
> > configuration /C:/test/bin/aop.xml
> > 2011-05-25 06:32:35,292 ERROR [STDERR] [2@41d47b2b] info register aspect
> > de.uni_bremen.st.berber.aspectj.Trace
> >
> > ...
> >
> > 2011-05-25 06:32:36,135 ERROR [STDERR] [2@4ca68fd8] info AspectJ Weaver
> > Version 1.6.11 built on Tuesday Mar 15, 2011 at 15:31:04 GMT
> > 2011-05-25 06:32:36,135 ERROR [STDERR] [2@4ca68fd8] info register
> > classloader org.jboss.mx.util.MBeanProxyExt$2@4ca68fd8
> > 2011-05-25 06:32:36,135 ERROR [STDERR] [2@4ca68fd8] info using
> > configuration /C:/test/bin/aop.xml
> > 2011-05-25 06:32:36,150 ERROR [STDERR] [2@4ca68fd8] info register aspect
> > de.uni_bremen.st.berber.aspectj.Trace
> >
> > ...
> >
> > 2011-05-25 06:34:08,809 ERROR [STDERR] [JasperLoader@331a0501] info
> > AspectJ Weaver Version 1.6.11 built on Tuesday Mar 15, 2011 at 15:31:04
> > GMT
> > 2011-05-25 06:34:08,809 ERROR [STDERR] [JasperLoader@331a0501] info
> > register classloader org.apache.jasper.servlet.JasperLoader@331a0501
> > 2011-05-25 06:34:08,825 ERROR [STDERR] [JasperLoader@331a0501] info
> > using configuration /C:/test/bin/aop.xml
> > 2011-05-25 06:34:08,825 ERROR [STDERR] [JasperLoader@331a0501] info
> > register aspect de.uni_bremen.st.berber.aspectj.Trace
> >
> > Entries that he advises some joinpoints is missing. I even deleted the
> > javassist.jar from the deployment directory to make sure he isn't using
> > it.
> >
> > Regards
> >
> > Bernhard