7:21 p.m.
Hey,
I'm a developer from DrFTPD, a Java FTP Daemon, and I'm planning to use JBoss AOP
in a part of the project.
Our current code depends heavily on JPF (Java Plugin Framework). Quoting from JPF's
site: "The plug-in architecture used by Eclipse was taken as the basic model for JPF
in early 2004.". This frameworks provides an easy way of adding extensions, creating
a complex plugin hierarchy with dependencies, on-the-fly reloading of classes, etc... But
in order to manage all this nice stuff it relies heavilly on its own ClassLoaders (lots
are use, creating a complex ClassLoaders graph).
Well, enough of explanations, let's go to the real fun :P
Running an example that is distributed with JBoss AOP 2.0 CR8, I get the following
output:
| DEBUG main org.jboss.aop.instrument.InstrumentorFactory - Passed in instrumentor:
null
| DEBUG main org.jboss.aop.instrument.InstrumentorFactory - Defaulting instrumentor to:
org.jboss.aop.instrument.GeneratedAdvisorInstrumentor
| DEBUG main org.jboss.aop.AdvisorFactory - Passed in advisor: null
| DEBUG main org.jboss.aop.AdvisorFactory - [debug] Defaulting advisor to:
org.jboss.aop.ClassAdvisor
| DEBUG main org.jboss.aop.Deployment - jboss.aop.class.path is NULL
| DEBUG main org.jboss.aop.Deployment - jboss.aop.search.classpath: 'null' true
| DEBUG main org.jboss.aop.Deployment - jboss.aop.path: jboss-aop.xml
| DEBUG main org.jboss.aop.Deployment - jboss.aop.path[0]: jboss-aop.xml
| DEBUG main org.jboss.aop.Deployment - deploying
file:/home/flavio/drftpd/workspace/TestAOP/jboss-aop.xml
| DEBUG main org.jboss.aop.AspectXmlLoader - AspectXMLLoader using
managerorg.jboss.aop.AspectManager@126804e
| DEBUG main org.jboss.aop.instrument.Instrumentor - trying to transform test.Driver
| DEBUG main org.jboss.aop.instrument.CallerTransformer - There are no caller
pointcuts!
| DEBUG main org.jboss.aop.instrument.JoinpointSimpleClassifier -
javassist.CtMethod@44a4fe33[public static main ([Ljava/lang/String;)V] matches no
pointcuts
| DEBUG main org.jboss.aop.instrument.JoinpointSimpleClassifier -
javassist.CtMethod@ab371a54[public teste ()V] matches no pointcuts
| DEBUG main org.jboss.aop.instrument.JoinpointSimpleClassifier -
javassist.CtConstructor@b8c8e6[public Driver ()V] matches no pointcuts
| DEBUG main org.jboss.aop.instrument.JoinpointSimpleClassifier - test.POJO.var:I
matches pointcut: all(test.POJO)
| DEBUG main org.jboss.aop.instrument.JoinpointSimpleClassifier - test.POJO.var:I
matches pointcut: all(test.POJO)
| DEBUG main org.jboss.aop.instrument.JoinpointSimpleClassifier -
javassist.CtConstructor@281d4b[public POJO ()V] matches pointcut: all(test.POJO)
| DEBUG main org.jboss.aop.instrument.Instrumentor - was test.Driver converted: true
| DEBUG main org.jboss.aop.SuperClassesFirstWeavingStrategy - cannot compile,
isInterface: test.Interface
| --- new POJO(); ---
| DEBUG main org.jboss.aop.instrument.Instrumentor - trying to transform test.POJO
| DEBUG main org.jboss.aop.instrument.CallerTransformer - There are no caller
pointcuts!
| DEBUG main org.jboss.aop.instrument.JoinpointSimpleClassifier -
javassist.CtMethod@6fab46b6[public someMethod ()V] matches pointcut: all(test.POJO)
| DEBUG main org.jboss.aop.instrument.JoinpointSimpleClassifier -
javassist.CtConstructor@1cd0888[public POJO ()V] matches pointcut: all(test.POJO)
| DEBUG main org.jboss.aop.instrument.JoinpointSimpleClassifier -
javassist.CtConstructor@1cd0888[public POJO ()V] matches pointcut: all(test.POJO)
| DEBUG main org.jboss.aop.instrument.JoinpointSimpleClassifier - test.POJO.var:I
matches pointcut: all(test.POJO)
| DEBUG main org.jboss.aop.instrument.JoinpointSimpleClassifier - test.POJO.var:I
matches pointcut: all(test.POJO)
| DEBUG main org.jboss.aop.instrument.Instrumentor - was test.POJO converted: true
| DEBUG main org.jboss.aop.ClassAdvisor - Creating chains for class test.POJO
sun.misc.Launcher$AppClassLoader@17182c1
| DEBUG main org.jboss.aop.ClassAdvisor - iterate binding
file:/home/flavio/drftpd/workspace/TestAOP/jboss-aop.xml0 all(test.POJO)
| [debug] method matched binding: public void test.POJO.someMethod()
| DEBUG main org.jboss.aop.advice.AdviceBinding - added advisor: test.POJO from binding:
file:/home/flavio/drftpd/workspace/TestAOP/jboss-aop.xml0
| DEBUG main org.jboss.aop.advice.AdviceBinding - added advisor: test.POJO from binding:
file:/home/flavio/drftpd/workspace/TestAOP/jboss-aop.xml0
| [debug] field matched read binding: public int test.POJO.var
| [debug] field matched write binding: public int test.POJO.var
| DEBUG main org.jboss.aop.advice.AdviceBinding - added advisor: test.POJO from binding:
file:/home/flavio/drftpd/workspace/TestAOP/jboss-aop.xml0
| [debug] constructor matched binding: public test.POJO()
| DEBUG main org.jboss.aop.advice.AdviceBinding - added advisor: test.POJO from binding:
file:/home/flavio/drftpd/workspace/TestAOP/jboss-aop.xml0
| DEBUG main org.jboss.aop.MethodMatchInfo - populate bindings for public void
test.POJO.someMethod() all bindings
| DEBUG main org.jboss.aop.MethodMatchInfo - 0 test.POJO all(test.POJO) : 1
| DEBUG main org.jboss.aop.MethodMatchInfo - populate bindings for public void
test.POJO.someMethod() actual bindings
| DEBUG main org.jboss.aop.MethodMatchInfo - 0 test.POJO all(test.POJO) : 1
| DEBUG main org.jboss.aop.advice.AdviceBinding - added advisor: test.POJO from binding:
file:/home/flavio/drftpd/workspace/TestAOP/jboss-aop.xml0
| DEBUG main org.jboss.aop.instrument.Instrumentor - trying to transform
test.SimpleInterceptor
| DEBUG main org.jboss.aop.instrument.CallerTransformer - There are no caller
pointcuts!
| DEBUG main org.jboss.aop.instrument.JoinpointSimpleClassifier -
javassist.CtMethod@26562bc2[public getName ()Ljava/lang/String;] matches no pointcuts
| DEBUG main org.jboss.aop.instrument.JoinpointSimpleClassifier -
javassist.CtMethod@2ff3c113[public invoke
(Lorg/jboss/aop/joinpoint/Invocation;)Ljava/lang/Object;] matches no pointcuts
| DEBUG main org.jboss.aop.instrument.JoinpointSimpleClassifier -
javassist.CtConstructor@633e5e[public SimpleInterceptor ()V] matches no pointcuts
| DEBUG main org.jboss.aop.instrument.Instrumentor - was test.SimpleInterceptor
converted: false
| DEBUG main org.jboss.aop.advice.AspectFactoryWithClassLoaderSupport - Using context
classloader sun.misc.Launcher$AppClassLoader@17182c1 to load aspect
test.SimpleInterceptor
| <<< Entering SimpleInterceptor type: test.JoinPoint_constructor_POJO_0_1$aop
| empty constructor
| >>> Leaving SimpleInterceptor
| --- pojo.someMethod(); ---
| <<< Entering SimpleInterceptor type:
test.JoinPoint_someMethod2315001504750198986_2$aop
| someMethod
| >>> Leaving SimpleInterceptor
| --- pojo.var++; ---
| <<< Entering SimpleInterceptor type: test.JoinPoint_r_var_3$aop
| >>> Leaving SimpleInterceptor
| <<< Entering SimpleInterceptor type: test.JoinPoint_w_var_4$aop
| >>> Leaving SimpleInterceptor
|
In order to run the application I used the following Java Parameters:
| -Dlog4j.configuration=file:log4j-debug.properties
| -Djboss.aop.verbose=true
| -Djboss.aop.path=jboss-aop.xml
| -javaagent:lib/jboss-aop-jdk50.jar
|
So the example works fine, I can see that from the logs.
But when I try to run DrFTPD using the same parameters I used to run the example I only
get the following output:
| [aop-debug] org.jboss.aop.instrument.InstrumentorFactory Passed in instrumentor: null
| [aop-debug] org.jboss.aop.instrument.InstrumentorFactory Defaulting instrumentor to:
org.jboss.aop.instrument.GeneratedAdvisorInstrumentor
| [aop-debug] org.jboss.aop.AdvisorFactory Passed in advisor: null
| [aop-debug] org.jboss.aop.AdvisorFactory [debug] Defaulting advisor to:
org.jboss.aop.ClassAdvisor
| [aop-debug] org.jboss.aop.Deployment jboss.aop.class.path is NULL
| [aop-debug] org.jboss.aop.Deployment jboss.aop.search.classpath: 'null' true
| [aop-debug] org.jboss.aop.Deployment jboss.aop.path: conf/aop
| [aop-debug] org.jboss.aop.Deployment jboss.aop.path[0]: conf/aop
| [aop-debug] org.jboss.aop.Deployment deploying
file:/home/flavio/drftpd/trunk/conf/aop/lucene-aop.xml
| [aop-debug] org.jboss.aop.AspectXmlLoader AspectXMLLoader using
managerorg.jboss.aop.AspectManager@503429
| [aop-debug] org.jboss.aop.SuperClassesFirstWeavingStrategy cannot compile,
isInterface: org.java.plugin.boot.ApplicationInitializer
| [aop-debug] org.jboss.aop.SuperClassesFirstWeavingStrategy cannot compile,
isInterface: org.java.plugin.boot.SplashHandler
| [aop-debug] org.jboss.aop.SuperClassesFirstWeavingStrategy cannot compile,
isInterface: org.java.plugin.boot.BootErrorHandler
| [aop-debug] org.jboss.aop.SuperClassesFirstWeavingStrategy cannot compile,
isInterface: org.java.plugin.boot.PluginsCollector
| [aop-debug] org.jboss.aop.SuperClassesFirstWeavingStrategy warning, isFrozen:
org.apache.log4j.Category [class path: sun.misc.Launcher$AppClassLoader@17182c1:] - dcl
sun.misc.Launcher$AppClassLoader@17182c1
| [aop-debug] org.jboss.aop.SuperClassesFirstWeavingStrategy cannot compile,
isInterface: org.apache.log4j.spi.AppenderAttachable
| [aop-debug] org.jboss.aop.SuperClassesFirstWeavingStrategy cannot compile,
isInterface: org.apache.commons.logging.Log
| [aop-debug] org.jboss.aop.SuperClassesFirstWeavingStrategy cannot compile,
isInterface: org.apache.log4j.spi.LoggerRepository
| [aop-debug] org.jboss.aop.SuperClassesFirstWeavingStrategy cannot compile,
isInterface: org.apache.log4j.spi.RepositorySelector
| [aop-debug] org.jboss.aop.SuperClassesFirstWeavingStrategy cannot compile,
isInterface: org.apache.log4j.spi.RendererSupport
| [aop-debug] org.jboss.aop.SuperClassesFirstWeavingStrategy cannot compile,
isInterface: org.apache.log4j.spi.LoggerFactory
| [aop-debug] org.jboss.aop.SuperClassesFirstWeavingStrategy cannot compile,
isInterface: org.apache.log4j.or.ObjectRenderer
|
That's not all the output, but the rest is pretty much the same.
Java Parameters:
| -Dlog4j.configuration=file:conf/log4j-debug-nojpf.properties
| -Djpf.boot.config=conf/boot-master.properties
| -Djava.library.path=lib
| -Djboss.aop.verbose=true
| -Djboss.aop.path=conf/aop
| -javaagent:lib/aop/jboss-aop-jdk50.jar
|
And the jboss-aop.xml
| <?xml version="1.0" encoding="UTF-8"?>
| <aop>
|
| <bind pointcut="all(org.drftpd.vfs.index.lucene.LuceneEngine)">
| <interceptor
class="org.drftpd.vfs.index.lucene.SimpleInterceptor"/>
| </bind>
|
| </aop>
|
As you can notice, the output is veery diferent when running the example (lots of lines
saying that JBoss AOP found a pointcut match and all that suff) from when running DrFTPD,
so I bet I'm making some kind of mistake or JPF and JBoss AOP cannot co-exist or
something like this.
I'm willing to provide anymore info you need in order to trace my problem.
Thanks in advance,
Flavio 'fr0w' Costa
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