/*
* 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.commons.proxy.interceptor;
import org.apache.commons.proxy.Interceptor;
import org.apache.commons.proxy.Invocation;
import java.io.ByteArrayInputStream;
import java.io.ByteArrayOutputStream;
import java.io.IOException;
import java.io.ObjectInputStream;
import java.io.ObjectOutputStream;
/**
* An interceptor which makes a serialized copy of all parameters and return values. This
* is useful when testing remote services to ensure that all parameter/return types
* are in fact serializable/deserializable.
* @since 1.0
*/
public class SerializingInterceptor implements Interceptor
{
public Object intercept(Invocation invocation) throws Throwable
{
Object[] arguments = invocation.getArguments();
for (int i = 0; i < arguments.length; i++)
{
arguments[i] = serializedCopy(arguments[i]);
}
return serializedCopy(invocation.proceed());
}
private Object serializedCopy(Object original)
{
try
{
final ByteArrayOutputStream bout = new ByteArrayOutputStream();
final ObjectOutputStream oout = new ObjectOutputStream(bout);
oout.writeObject(original);
oout.close();
bout.close();
final ByteArrayInputStream bin = new ByteArrayInputStream(bout.toByteArray());
final ObjectInputStream oin = new ObjectInputStream(bin);
final Object copy = oin.readObject();
oin.close();
bin.close();
return copy;
}
catch (IOException e)
{
throw new RuntimeException( "Unable to make serialized copy of " +
original.getClass().getName() + " object.", e );
}
catch (ClassNotFoundException e)
{
throw new RuntimeException( "Unable to make serialized copy of " +
original.getClass().getName() + " object.", e );
}
}
}
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