heipacker

package com.dlmu.agent.test;

/**
 * Created by fupan on 16-4-2.
 */
public class HelloWorld {

    public static void main(String[] args) {
        System.out.println("hello, world.");
    }

heipacker

hey,hey,hey

heipacker

package com.dlmu.agent;

import java.lang.instrument.Instrumentation;

/**
 * Created by fupan on 16-4-2.
 */
public class AgentTest {

    private static Instrumentation inst = null;

heipacker

private static Instrumentation instrumentation() {
        ClassLoader mainAppLoader = ClassLoader.getSystemClassLoader();
        try {
            Class<?> javaAgentClass = mainAppLoader.loadClass("com.dlmu.agent.AgentTest");
            Method method = javaAgentClass.getDeclaredMethod("instrumentation", new Class[0]);
            return (Instrumentation) method.invoke(null, new Object[0]);
        } catch (Throwable e) {
            System.out.println("can not get agent class" + e.getStackTrace());
            return null;
        }

heipacker

    private static void addCode(Instrumentation instrumentation) {
        Class[] allLoadedClasses = instrumentation.getAllLoadedClasses();
        System.out.println("all load classes length:" + allLoadedClasses.length);
        System.out.println("object size:" + instrumentation.getObjectSize(new Object()));
        instrumentation.addTransformer(new ClassFileTransformer() {
            @Override
            public byte[] transform(ClassLoader loader, String className, Class<?> classBeingRedefined, ProtectionDomain protectionDomain, byte[] classfileBuffer) throws IllegalClassFormatException {
                if (classBeingRedefined != null) return null;
                System.out.println("class transform " + className);
                return classfileBuffer;

heipacker

    private String jarFilePath = "/home/fupan/IdeaProjects/agentTest/agent-jar/target/agent-jar-1.0-SNAPSHOT.jar";

    private static void attachAgent() {
        TestAgent testAgent = new TestAgent();
        testAgent.loadAgent();
    }

    void loadAgent() {
        VirtualMachine vm;

heipacker

    /**
     * Registers the supplied transformer.
     * <P>
     * Same as <code>addTransformer(transformer, false)</code>.
     *
     * @param transformer          the transformer to register
     * @throws java.lang.NullPointerException if passed a <code>null</code> transformer
     * @see    #addTransformer(ClassFileTransformer,boolean)
     */
    void

heipacker

package com.dlmu.agent.server;

import java.lang.instrument.ClassFileTransformer;
import java.lang.instrument.IllegalClassFormatException;
import java.security.ProtectionDomain;

/**
 * Created by fupan on 16-4-9.
 */
public class SimpleClassFileTransformer implements ClassFileTransformer {

heipacker

package com.dlmu.agent.server;

import net.bytebuddy.agent.builder.AgentBuilder;
import net.bytebuddy.description.type.TypeDescription;
import net.bytebuddy.dynamic.DynamicType;
import net.bytebuddy.implementation.MethodDelegation;
import net.bytebuddy.implementation.SuperMethodCall;
import net.bytebuddy.matcher.ElementMatchers;

import java.lang.instrument.ClassFileTransformer;

heipacker

package com.dlmu.agent.server;

import net.bytebuddy.implementation.bind.annotation.Origin;

import java.lang.reflect.Method;

/**
 * Created by fupan on 16-4-9.
 */
public class DelagateLogging {