support MethodInfo binding

bytekit/src/main/java/com/taobao/arthas/bytekit/asm/binding/Binding.java

@@ -312,6 +312,21 @@ public abstract class Binding {
         }
     }
 
+    @Documented
+    @Retention(RetentionPolicy.RUNTIME)
+    @java.lang.annotation.Target(ElementType.PARAMETER)
+    @BindingParserHandler(parser = MethodInfoBindingParser.class)
+    public static @interface MethodInfo {
+        boolean optional() default false;
+    }
+
+    public static class MethodInfoBindingParser implements BindingParser {
+        @Override
+        public Binding parse(Annotation annotation) {
+            return new MethodDeclarationBinding();
+        }
+    }
+
     @Documented
     @Retention(RetentionPolicy.RUNTIME)
     @java.lang.annotation.Target(ElementType.PARAMETER)

bytekit/src/main/java/com/taobao/arthas/bytekit/asm/binding/MethodInfoBinding.java

@@ -0,0 +1,30 @@
+package com.taobao.arthas.bytekit.asm.binding;
+
+import com.alibaba.arthas.deps.org.objectweb.asm.Type;
+import com.alibaba.arthas.deps.org.objectweb.asm.tree.InsnList;
+import com.alibaba.arthas.deps.org.objectweb.asm.tree.MethodNode;
+import com.taobao.arthas.bytekit.asm.MethodProcessor;
+import com.taobao.arthas.bytekit.utils.AsmOpUtils;
+
+/**
+ * method name | method desc 的方式组织
+ * 
+ * TODO 是否要有 line number ?
+ * 
+ * @author hengyunabc 2020-05-16
+ *
+ */
+public class MethodInfoBinding extends Binding {
+
+    @Override
+    public void pushOntoStack(InsnList instructions, BindingContext bindingContext) {
+        MethodProcessor methodProcessor = bindingContext.getMethodProcessor();
+        MethodNode methodNode = methodProcessor.getMethodNode();
+        AsmOpUtils.ldc(instructions, methodNode.name + methodNode.desc);
+    }
+
+    @Override
+    public Type getType(BindingContext bindingContext) {
+        return Type.getType(String.class);
+    }
+}

core/src/main/java/com/taobao/arthas/core/advisor/Enhancer.java

@@ -92,23 +92,21 @@ public class Enhancer implements ClassFileTransformer {
 
         @AtEnter(inline = true)
         public static void atEnter(@Binding.This Object target, @Binding.Class Class<?> clazz,
-                @Binding.MethodName String methodName, @Binding.MethodDesc String methodDesc,
+                @Binding.MethodInfo String methodInfo, @Binding.Args Object[] args) {
-                @Binding.Args Object[] args) {
+            SpyAPI.atEnter(clazz, methodInfo, target, args);
-            SpyAPI.atEnter(clazz, methodName, methodDesc, target, args);
         }
 
         @AtExit(inline = true)
         public static void atExit(@Binding.This Object target, @Binding.Class Class<?> clazz,
-                @Binding.MethodName String methodName, @Binding.MethodDesc String methodDesc,
+                @Binding.MethodInfo String methodInfo, @Binding.Args Object[] args, @Binding.Return Object returnObj) {
-                @Binding.Args Object[] args, @Binding.Return Object returnObj) {
+            SpyAPI.atExit(clazz, methodInfo, target, args, returnObj);
-            SpyAPI.atExit(clazz, methodName, methodDesc, target, args, returnObj);
         }
 
         @AtExceptionExit(inline = true)
         public static void atExceptionExit(@Binding.This Object target, @Binding.Class Class<?> clazz,
-                @Binding.MethodName String methodName, @Binding.MethodDesc String methodDesc,
+                @Binding.MethodInfo String methodInfo, @Binding.Args Object[] args,
-                @Binding.Args Object[] args, @Binding.Throwable Throwable throwable) {
+                @Binding.Throwable Throwable throwable) {
-            SpyAPI.atExceptionExit(clazz, methodName, methodDesc, target, args, throwable);
+            SpyAPI.atExceptionExit(clazz, methodInfo, target, args, throwable);
         }
     }
 

spy/src/main/java/java/arthas/SpyAPI.java

@@ -32,18 +32,18 @@ public class SpyAPI {
         spyInstance = spy;
     }
 
-    public static void atEnter(Class<?> clazz, String methodName, String methodDesc, Object target, Object[] args) {
+    public static void atEnter(Class<?> clazz, String methodInfo, Object target, Object[] args) {
-        spyInstance.atEnter(clazz, methodName, methodDesc, target, args);
+        spyInstance.atEnter(clazz, methodInfo, target, args);
     }
 
-    public static void atExit(Class<?> clazz, String methodName, String methodDesc, Object target, Object[] args,
+    public static void atExit(Class<?> clazz, String methodInfo, Object target, Object[] args,
             Object returnObject) {
-        spyInstance.atExit(clazz, methodName, methodDesc, target, args, returnObject);
+        spyInstance.atExit(clazz, methodInfo, target, args, returnObject);
     }
 
-    public static void atExceptionExit(Class<?> clazz, String methodName, String methodDesc, Object target,
+    public static void atExceptionExit(Class<?> clazz, String methodInfo, Object target,
             Object[] args, Throwable throwable) {
-        spyInstance.atExceptionExit(clazz, methodName, methodDesc, target, args, throwable);
+        spyInstance.atExceptionExit(clazz, methodInfo, target, args, throwable);
     }
 
     public static void atBeforeInvoke(Class<?> clazz, String invokeInfo, Object target) {
@@ -59,13 +59,13 @@ public class SpyAPI {
     }
 
     public static abstract class AbstractSpy {
-        public abstract void atEnter(Class<?> clazz, String methodName, String methodDesc, Object target,
+        public abstract void atEnter(Class<?> clazz, String methodInfo, Object target,
                 Object[] args);
 
-        public abstract void atExit(Class<?> clazz, String methodName, String methodDesc, Object target, Object[] args,
+        public abstract void atExit(Class<?> clazz, String methodInfo, Object target, Object[] args,
                 Object returnObject);
 
-        public abstract void atExceptionExit(Class<?> clazz, String methodName, String methodDesc, Object target,
+        public abstract void atExceptionExit(Class<?> clazz, String methodInfo, Object target,
                 Object[] args, Throwable throwable);
 
         public abstract void atBeforeInvoke(Class<?> clazz, String invokeInfo, Object target);
@@ -78,16 +78,16 @@ public class SpyAPI {
     static class NopSpy extends AbstractSpy {
 
         @Override
-        public void atEnter(Class<?> clazz, String methodName, String methodDesc, Object target, Object[] args) {
+        public void atEnter(Class<?> clazz, String methodInfo, Object target, Object[] args) {
         }
 
         @Override
-        public void atExit(Class<?> clazz, String methodName, String methodDesc, Object target, Object[] args,
+        public void atExit(Class<?> clazz, String methodInfo, Object target, Object[] args,
                 Object returnObject) {
         }
 
         @Override
-        public void atExceptionExit(Class<?> clazz, String methodName, String methodDesc, Object target, Object[] args,
+        public void atExceptionExit(Class<?> clazz, String methodInfo, Object target, Object[] args,
                 Throwable throwable) {
         }