mirror of https://github.com/alibaba/arthas.git
switch to SpyAPI, clean Spy code
hengyunabc
5 years ago
parent
a55b471ea7
commit
1e52ea4530
@ -1,131 +0,0 @@
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package java.arthas;
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import java.lang.reflect.Method;
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/**
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* 间谍类<br/>
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* 藏匿在各个ClassLoader中
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* Created by vlinux on 15/8/23.
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*/
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public class Spy {
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public static final String ON_BEFORE = "methodOnBegin";
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public static final String ON_RETURN = "methodOnReturnEnd";
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public static final String ON_THROWS = "methodOnThrowingEnd";
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public static final String BEFORE_INVOKE = "methodOnInvokeBeforeTracing";
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public static final String AFTER_INVOKE = "methodOnInvokeAfterTracing";
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public static final String THROW_INVOKE = "methodOnInvokeThrowTracing";
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// -- 各种Advice的钩子引用 --
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public static volatile Method ON_BEFORE_METHOD;
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public static volatile Method ON_RETURN_METHOD;
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public static volatile Method ON_THROWS_METHOD;
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public static volatile Method BEFORE_INVOKING_METHOD;
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public static volatile Method AFTER_INVOKING_METHOD;
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public static volatile Method THROW_INVOKING_METHOD;
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/**
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* arthas's classloader 引用
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*/
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public static volatile ClassLoader CLASSLOADER;
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/**
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* 代理重设方法
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*/
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public static volatile Method AGENT_RESET_METHOD;
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/**
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* 用于普通的间谍初始化
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*/
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public static void init(
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ClassLoader classLoader,
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Method onBeforeMethod,
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Method onReturnMethod,
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Method onThrowsMethod,
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Method beforeInvokingMethod,
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Method afterInvokingMethod,
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Method throwInvokingMethod) {
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CLASSLOADER = classLoader;
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ON_BEFORE_METHOD = onBeforeMethod;
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ON_RETURN_METHOD = onReturnMethod;
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ON_THROWS_METHOD = onThrowsMethod;
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BEFORE_INVOKING_METHOD = beforeInvokingMethod;
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AFTER_INVOKING_METHOD = afterInvokingMethod;
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THROW_INVOKING_METHOD = throwInvokingMethod;
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}
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/**
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* Clean up the reference to com.taobao.arthas.agent.AgentLauncher$1
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* to avoid classloader leak.
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*/
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public static void destroy() {
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initEmptySpy();
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// clear the reference to ArthasClassLoader in AgentLauncher
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if (AGENT_RESET_METHOD != null) {
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try {
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AGENT_RESET_METHOD.invoke(null);
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} catch (Exception e) {
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e.printStackTrace();
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}
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}
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AGENT_RESET_METHOD = null;
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}
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private static void initEmptySpy() {
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try {
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Class<?> adviceWeaverClass = Spy.class;
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Method onBefore = adviceWeaverClass.getMethod(Spy.ON_BEFORE, int.class, ClassLoader.class, String.class,
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String.class, String.class, Object.class, Object[].class);
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Method onReturn = adviceWeaverClass.getMethod(Spy.ON_RETURN, Object.class);
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Method onThrows = adviceWeaverClass.getMethod(Spy.ON_THROWS, Throwable.class);
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Method beforeInvoke = adviceWeaverClass.getMethod(Spy.BEFORE_INVOKE, int.class, String.class, String.class,
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String.class, int.class);
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Method afterInvoke = adviceWeaverClass.getMethod(Spy.AFTER_INVOKE, int.class, String.class, String.class,
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String.class, int.class);
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Method throwInvoke = adviceWeaverClass.getMethod(Spy.THROW_INVOKE, int.class, String.class, String.class,
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String.class, int.class);
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Spy.init(null, onBefore, onReturn, onThrows, beforeInvoke, afterInvoke, throwInvoke);
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} catch (Exception e) {
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}
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}
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/**
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* empty method
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*
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* @see com.taobao.arthas.core.advisor.AdviceWeaver#methodOnBegin(int,
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* ClassLoader, String, String, String, Object, Object[])
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* @param adviceId
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* @param loader
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* @param className
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* @param methodName
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* @param methodDesc
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* @param target
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* @param args
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*/
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public static void methodOnBegin(int adviceId, ClassLoader loader, String className, String methodName,
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String methodDesc, Object target, Object[] args) {
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}
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/**
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* empty method
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*
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* @see com.taobao.arthas.core.advisor.AdviceWeaver#methodOnReturnEnd(Object)
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* @param returnObject
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*/
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public static void methodOnReturnEnd(Object returnObject) {
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}
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public static void methodOnThrowingEnd(Throwable throwable) {
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}
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public static void methodOnInvokeBeforeTracing(int adviceId, String owner, String name, String desc,
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int lineNumber) {
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}
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public static void methodOnInvokeAfterTracing(int adviceId, String owner, String name, String desc,
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int lineNumber) {
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}
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public static void methodOnInvokeThrowTracing(int adviceId, String owner, String name, String desc,
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int lineNumber) {
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}
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}
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