Comments (5)
If you are registering the interceptor after the program has started, the class will be loaded already.
To instrument loaded classes, have a look at retransformation. This will however also require you to use Advice
in most cases.
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If you are registering the interceptor after the program has started, the class will be loaded already.
To instrument loaded classes, have a look at retransformation. This will however also require you to use
Advice
in most cases.
Do I need to call the following code?
But this doesn't work either, please advise
try {
inst.retransformClasses(allLoadedClass);
} catch (UnmodifiableClassException e) {
throw new RuntimeException(e);
}
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I want to intercept the specified method again after the class has been loaded
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Register a RetransformationStrategy. This will normally require Advice.
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Is it like this? When "org.example.ScheduleTest" is loaded, it still doesn't work
new AgentBuilder.Default()
.type(ElementMatchers.named("org.example.ScheduleTest"))
.transform((builder, typeDescription, classLoader, module,protectionDomain) -> builder
.method(ElementMatchers.any())
.intercept(Advice.to(Interceptor.class)))
.with(AgentBuilder.RedefinitionStrategy.REDEFINITION)
.installOn(inst);
public class Interceptor {
@Advice.OnMethodEnter
static long invokeBeforeEachMethod(
@Advice.Origin String method) {
System.out.println("Entering to invoke : " + method);
return System.currentTimeMillis();
}
@Advice.OnMethodExit
static void invokeWhileExitingEachMethod(@Advice.Origin String method,
@Advice.Enter long startTime) {
System.out.println(
"Method " + method + " took " + (System.currentTimeMillis() - startTime) + "ms");
}
}
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