增加大量的复杂结构，用于定义对类的拦截，以及实例级上下文存储。#36

skywalking-api/src/main/java/com/ai/cloud/skywalking/plugin/interceptor/EnhanceClazz4Interceptor.java

@@ -36,7 +36,10 @@ public class EnhanceClazz4Interceptor {
 		}
 	}
 
-	private void enhance0(String enhanceOriginClassName) {
+	private void enhance0(String interceptorDefineClassName) throws InstantiationException, IllegalAccessException, ClassNotFoundException {
+		InterceptorDefine define = (InterceptorDefine)Class.forName(interceptorDefineClassName).newInstance();
+		
+		String enhanceOriginClassName = define.getBeInterceptedClassName();
 		/**
 		 * add '$$Origin' at the end of be enhanced classname <br/>
 		 * such as: class com.ai.cloud.TestClass to class com.ai.cloud.TestClass$$Origin
@@ -48,5 +51,13 @@ public class EnhanceClazz4Interceptor {
 				.make()
 				.load(ClassLoader.getSystemClassLoader(),
 						ClassLoadingStrategy.Default.INJECTION).getLoaded();
+		
+		/**
+		 * define class as origin class name. and inject to classloader. <br/>
+		 * new class need:<br/>
+		 * 1.implement com.ai.cloud.skywalking.plugin.interceptor.IEnhancedClassInstanceContext();  <br/>
+		 * 2.add field '_$EnhancedClassInstanceContext' of type EnhancedClassInstanceContext
+		 * 3.intercept constructor and method if required by interceptorDefineClass
+		 */
 	}
 }

skywalking-api/src/main/java/com/ai/cloud/skywalking/plugin/interceptor/EnhancedClassInstanceContext.java

+package com.ai.cloud.skywalking.plugin.interceptor;
+
+import java.util.HashMap;
+import java.util.Map;
+
+/**
+ * 被增强的类实例，需扩展的context属性，用于在不同的方法，或者构造函数间保存实例
+ * 
+ * @author wusheng
+ *
+ */
+public class EnhancedClassInstanceContext {
+	public static final String FIELD_NAME = "_$EnhancedClassInstanceContext";
+	
+	private Map<Object, Object> context = new HashMap<Object, Object>();
+	
+	
+}

skywalking-api/src/main/java/com/ai/cloud/skywalking/plugin/interceptor/IAroundInterceptor.java

+package com.ai.cloud.skywalking.plugin.interceptor;
+
+public interface IAroundInterceptor {
+	public void onConstruct(EnhancedClassInstanceContext context);
+	
+	public void beforeMethod(EnhancedClassInstanceContext context);
+	
+	public void afterMethod(EnhancedClassInstanceContext context);
+	
+	
+}

skywalking-api/src/main/java/com/ai/cloud/skywalking/plugin/interceptor/IEnhancedClassInstanceContext.java

+package com.ai.cloud.skywalking.plugin.interceptor;
+
+/**
+ * 被增强的类,会实现此接口，用于快速获取实例级属性上下文扩展<br/>
+ * @see com.ai.cloud.skywalking.plugin.interceptor.EnhanceClazz4Interceptor.enhance0()
+ * 
+ * @author wusheng
+ *
+ */
+public interface IEnhancedClassInstanceContext {
+	public EnhancedClassInstanceContext getEnhancedClassInstanceContext();
+}

skywalking-api/src/main/java/com/ai/cloud/skywalking/plugin/interceptor/InterceptorDefine.java

+package com.ai.cloud.skywalking.plugin.interceptor;
+
+public interface InterceptorDefine {
+	public String getBeInterceptedClassName();
+	
+	public String[] getBeInterceptedMethods();
+	
+	public IAroundInterceptor instance();
+}

skywalking-api/src/test/java/test/ai/cloud/bytebuddy/SimulateMain.java

@@ -11,7 +11,7 @@ import net.bytebuddy.pool.TypePool;
 
 public class SimulateMain {
 	public static void main(String[] args) throws NoSuchFieldException,
-			SecurityException, InstantiationException, IllegalAccessException {
+			SecurityException, InstantiationException, IllegalAccessException, ClassNotFoundException {
 		TypePool typePool = TypePool.Default.ofClassPath();
 
 		Class<?> newClazz = new ByteBuddy()
@@ -39,6 +39,9 @@ public class SimulateMain {
 		// System.out.println(t22.testA("1"));
 		TestClass t = new TestClass("abc");
 		System.out.println(t.testA("1"));
+		
+		t = new TestClass("abc");
+		System.out.println(t.testA("1"));
 
 //		TestClass t2 = null;
 //		try {