[aspectj-users] Monitoring JBOSS

[garcia@xxxxxxxxx]

Hi everybody, I'm trying to monitor JBOSS's behaviour using AOP. I'm 
interested in monitoring javax.servlet.Servlet.service(...)  and 
org.jboss.ejb.Container.invoke(...) method's execution.
I got no problem monitoring servlets but got some troubles when monitoring 
container's invokes.

I created the following aspect file:


aspect container {
pointcut po0_execution (org.jboss.ejb.Container objo,java.lang.String 
p0,java.lang.Object[] p1,java.lang.String[] 
p2):target(objo)&&(execution(java.lang.Object 
invoke(java.lang.String,java.lang.Object[],java.lang.String[])))&&args(p0, p1, 
p2);

before(org.jboss.ejb.Container objo,java.lang.String p0,java.lang.Object[] 
p1,java.lang.String[] p2):po0_execution(objo,p0, p1, p2){
/*You can acces to those objects using their name
Caller object :org.jboss.ejb.Container objo
Parameter 0:java.lang.String p0
Parameter 1:java.lang.Object[] p1
Parameter 2:java.lang.String[] p2
*/
System.out.println("Someone is invoking me");
}
after(org.jboss.ejb.Container objo,java.lang.String p0,java.lang.Object[] 
p1,java.lang.String[] p2):po0_execution(objo,p0, p1, p2){
/*You can acces to those objects using their name
Caller object :org.jboss.ejb.Container objo
Parameter 0:java.lang.String p0
Parameter 1:java.lang.Object[] p1
Parameter 2:java.lang.String[] p2
*/

}
pointcut po1_execution (org.jboss.ejb.Container 
objo):target(objo)&&(execution(void start()));

before(org.jboss.ejb.Container objo):po1_execution(objo){
/*You can acces to those objects using their name
Caller object :org.jboss.ejb.Container objo
*/
System.out.println("start");
}
after(org.jboss.ejb.Container objo):po1_execution(objo){
/*You can acces to those objects using their name
Caller object :org.jboss.ejb.Container objo
*/

}
pointcut po2_execution (org.jboss.ejb.Container 
objo):target(objo)&&(execution(void stop()));

before(org.jboss.ejb.Container objo):po2_execution(objo){
/*You can acces to those objects using their name
Caller object :org.jboss.ejb.Container objo
*/
System.out.println("stop");
}
after(org.jboss.ejb.Container objo):po2_execution(objo){
/*You can acces to those objects using their name
Caller object :org.jboss.ejb.Container objo
*/

}
pointcut po3_call (org.jboss.ejb.Container objo,java.lang.String 
p0,java.lang.Object[] p1,java.lang.String[] 
p2):target(objo)&&(call(java.lang.Object 
invoke(java.lang.String,java.lang.Object[],java.lang.String[])))&&args(p0, p1, 
p2);

before(org.jboss.ejb.Container objo,java.lang.String p0,java.lang.Object[] 
p1,java.lang.String[] p2):po3_call(objo,p0, p1, p2){
/*You can acces to those objects using their name
Caller object :org.jboss.ejb.Container objo
Parameter 0:java.lang.String p0
Parameter 1:java.lang.Object[] p1
Parameter 2:java.lang.String[] p2
*/

}
after(org.jboss.ejb.Container objo,java.lang.String p0,java.lang.Object[] 
p1,java.lang.String[] p2):po3_call(objo,p0, p1, p2){
/*You can acces to those objects using their name
Caller object :org.jboss.ejb.Container objo
Parameter 0:java.lang.String p0
Parameter 1:java.lang.Object[] p1
Parameter 2:java.lang.String[] p2
*/

}
pointcut po4_call (org.jboss.ejb.Container objo):target(objo)&&(call(void 
start()));

before(org.jboss.ejb.Container objo):po4_call(objo){
/*You can acces to those objects using their name
Caller object :org.jboss.ejb.Container objo
*/
System.out.println("call start");
}
after(org.jboss.ejb.Container objo):po4_call(objo){
/*You can acces to those objects using their name
Caller object :org.jboss.ejb.Container objo
*/

}
pointcut po5_call (org.jboss.ejb.Container objo):target(objo)&&(call(void 
stop()));

before(org.jboss.ejb.Container objo):po5_call(objo){
/*You can acces to those objects using their name
Caller object :org.jboss.ejb.Container objo
*/
System.out.println("call stop");
}
after(org.jboss.ejb.Container objo):po5_call(objo){
/*You can acces to those objects using their name
Caller object :org.jboss.ejb.Container objo
*/

}
}

But nothing is displayed in the screen :(. Does anybody has any clues about 
what's happenning and why those message aren't displayed ?.

Thanks everybody.

Dave Garcia

Politecnical University of Catalonia.