/*
* Copyright 2016 NAVER Corp.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package com.navercorp.pinpoint.profiler.instrument;
import com.navercorp.pinpoint.profiler.util.JavaAssistUtils;
import org.junit.Before;
import org.junit.Test;
import org.objectweb.asm.Type;
import org.objectweb.asm.tree.ClassNode;
import org.objectweb.asm.tree.MethodNode;
import java.lang.reflect.Method;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
/**
* @author jaehong.kim
*/
public class ASMMethodNodeAdapterAddDelegatorTest {
private ASMClassNodeLoader.TestClassLoader classLoader;
@Before
public void before() {
this.classLoader = ASMClassNodeLoader.getClassLoader();
}
@Test
public void addDelegatorMethod() throws Exception {
Class<?> clazz = addDelegatorMethod("com.navercorp.pinpoint.profiler.instrument.mock.ExtendedClass", "com.navercorp.pinpoint.profiler.instrument.mock.BaseClass", "base");
Method method = clazz.getDeclaredMethod("base");
method.invoke(clazz.newInstance());
}
@Test
public void addDelegatorStaticMethod() throws Exception {
Class<?> clazz = addDelegatorMethod("com.navercorp.pinpoint.profiler.instrument.mock.ExtendedClass", "com.navercorp.pinpoint.profiler.instrument.mock.BaseClass", "getInstance");
Method method = clazz.getDeclaredMethod("getInstance");
method.invoke(clazz.newInstance());
}
@Test
public void addDelegatorPublicArgByteReturnVoidMethod() throws Exception {
Class<?> clazz = addDelegatorMethod("com.navercorp.pinpoint.profiler.instrument.mock.DelegatorClass", "com.navercorp.pinpoint.profiler.instrument.mock.DelegatorSuperClass", "publicArgByteReturnVoid");
Method method = clazz.getDeclaredMethod("publicArgByteReturnVoid", byte.class);
byte args = 1;
method.invoke(clazz.newInstance(), args);
}
@Test
public void addDelegatorPublicArgStringReturnStringMethod() throws Exception {
Class<?> clazz = addDelegatorMethod("com.navercorp.pinpoint.profiler.instrument.mock.DelegatorClass", "com.navercorp.pinpoint.profiler.instrument.mock.DelegatorSuperClass", "publicArgStringReturnString");
Method method = clazz.getDeclaredMethod("publicArgStringReturnString", String.class);
String args = "";
Object result = method.invoke(clazz.newInstance(), args);
}
@Test
public void addDelegatorPublicArgStringReturnStringArrayMethod() throws Exception {
Class<?> clazz = addDelegatorMethod("com.navercorp.pinpoint.profiler.instrument.mock.DelegatorClass", "com.navercorp.pinpoint.profiler.instrument.mock.DelegatorSuperClass", "publicArgStringReturnStringArray");
Method method = clazz.getDeclaredMethod("publicArgStringReturnStringArray", String.class, String.class);
Object result = method.invoke(clazz.newInstance(), "foo", "bar");
}
@Test
public void addDelegatorPublicArgStringReturnStringArraysMethod() throws Exception {
Class<?> clazz = addDelegatorMethod("com.navercorp.pinpoint.profiler.instrument.mock.DelegatorClass", "com.navercorp.pinpoint.profiler.instrument.mock.DelegatorSuperClass", "publicArgStringReturnStringArrays");
Method method = clazz.getDeclaredMethod("publicArgStringReturnStringArrays", String.class, String.class, String.class);
Object result = method.invoke(clazz.newInstance(), "foo", "bar", "zoo");
if (result instanceof String[][]) {
String[][] array = (String[][]) result;
}
}
@Test
public void addDelegatorPublicArgInterfaceReturnVoidMethod() throws Exception {
Class<?> clazz = addDelegatorMethod("com.navercorp.pinpoint.profiler.instrument.mock.DelegatorClass", "com.navercorp.pinpoint.profiler.instrument.mock.DelegatorSuperClass", "publicArgInterfaceReturnVoid");
Method method = clazz.getDeclaredMethod("publicArgInterfaceReturnVoid", Map.class, Map.class, Map.class);
Map map = new HashMap();
method.invoke(clazz.newInstance(), map, map, map);
}
@Test
public void addDelegatorPublicArgsReturnVoidMethod() throws Exception {
Class<?> clazz = addDelegatorMethod("com.navercorp.pinpoint.profiler.instrument.mock.DelegatorClass", "com.navercorp.pinpoint.profiler.instrument.mock.DelegatorSuperClass", "publicArgsReturnVoid");
Method method = clazz.getDeclaredMethod("publicArgsReturnVoid", Object[].class);
Object[] args = new Object[1];
method.invoke(clazz.newInstance(), args);
}
private Class<?> addDelegatorMethod(final String targetClassName, final String superClassName, final String methodName) throws Exception {
final ClassNode superClassNode = ASMClassNodeLoader.get(superClassName);
List<MethodNode> methodNodes = superClassNode.methods;
final MethodNode methodNode = findMethodNode(methodName, methodNodes);
classLoader.setTargetClassName(targetClassName);
classLoader.setCallbackHandler(new ASMClassNodeLoader.CallbackHandler() {
@Override
public void handle(final ClassNode classNode) {
String[] exceptions = null;
if (methodNode.exceptions != null) {
exceptions = methodNode.exceptions.toArray(new String[methodNode.exceptions.size()]);
}
final MethodNode newMethodNode = new MethodNode(methodNode.access, methodNode.name, methodNode.desc, methodNode.signature, exceptions);
final ASMMethodNodeAdapter methodNodeAdapter = new ASMMethodNodeAdapter(classNode.name, newMethodNode);
methodNodeAdapter.addDelegator(JavaAssistUtils.javaNameToJvmName(superClassName));
classNode.methods.add(newMethodNode);
}
});
return classLoader.loadClass(targetClassName);
}
private MethodNode findMethodNode(final String methodName, final List<MethodNode> methodNodes) {
for (MethodNode methodNode : methodNodes) {
if (methodNode.name.equals(methodName)) {
return methodNode;
}
}
return null;
}
}