/**
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership.
* The ASF licenses this file to You 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 org.apache.activemq.bugs;
import static org.junit.Assert.assertEquals;
import java.io.ByteArrayInputStream;
import java.io.ByteArrayOutputStream;
import java.io.ObjectOutputStream;
import java.io.Serializable;
import java.lang.reflect.InvocationHandler;
import java.lang.reflect.Method;
import java.util.ArrayList;
import java.util.List;
import org.apache.activemq.util.ClassLoadingAwareObjectInputStream;
import org.junit.Before;
import org.junit.Test;
/**
* Quick port to java to support AMQ build.
*
* This test demonstrates the classloader problem in the
* ClassLoadingAwareObjectInputStream impl. If the first interface in the proxy
* interfaces list is JDK and there are any subsequent interfaces that are NOT
* JDK interfaces the ClassLoadingAwareObjectInputStream will ignore their
* respective classloaders and cause the Proxy to throw an
* IllegalArgumentException because the core JDK classloader can't load the
* interfaces that are not JDK interfaces.
*
* See AMQ-3537
*
* @author jason.yankus
*
*/
@SuppressWarnings({ "rawtypes", "unchecked" })
public class AMQ3537Test implements InvocationHandler, Serializable {
private static final long serialVersionUID = 1L;
/**
* If the first and second element in this array are swapped, the test will
* fail.
*/
public static final Class[] TEST_CLASSES = new Class[] { List.class, NonJDKList.class, Serializable.class };
/** Underlying list */
private final List l = new ArrayList<String>();
@Before
public void setUp() throws Exception {
l.add("foo");
}
@Test
public void testDeserializeProxy() throws Exception {
// create the proxy
List proxy = (List) java.lang.reflect.Proxy.newProxyInstance(this.getClass().getClassLoader(), TEST_CLASSES, this);
// serialize it
ByteArrayOutputStream baos = new ByteArrayOutputStream();
ObjectOutputStream oos = new ObjectOutputStream(baos);
oos.writeObject(proxy);
byte[] serializedProxy = baos.toByteArray();
oos.close();
baos.close();
// deserialize the proxy
ClassLoadingAwareObjectInputStream claois =
new ClassLoadingAwareObjectInputStream(new ByteArrayInputStream(serializedProxy));
// this is where it fails due to the rudimentary classloader selection
// in ClassLoadingAwareObjectInputStream
List deserializedProxy = (List) claois.readObject();
claois.close();
// assert the invocation worked
assertEquals("foo", deserializedProxy.get(0));
}
@Override
public Object invoke(Object proxy, Method method, Object[] args) throws Throwable {
return method.invoke(l, args);
}
public interface NonJDKList {
int size();
}
}