/*
* 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.mina.filter.codec.serialization;
import java.io.NotSerializableException;
import java.io.Serializable;
import org.apache.mina.common.ByteBuffer;
import org.apache.mina.common.IoSession;
import org.apache.mina.filter.codec.ProtocolEncoder;
import org.apache.mina.filter.codec.ProtocolEncoderAdapter;
import org.apache.mina.filter.codec.ProtocolEncoderOutput;
/**
* A {@link ProtocolEncoder} which serializes {@link Serializable} Java objects
* using {@link ByteBuffer#putObject(Object)}.
*
* @author The Apache Directory Project (mina-dev@directory.apache.org)
* @version $Rev: 451854 $, $Date: 2006-10-02 11:30:11 +0900 (월, 02 10월 2006) $
*/
public class ObjectSerializationEncoder extends ProtocolEncoderAdapter
{
private int maxObjectSize = Integer.MAX_VALUE; // 2GB
/**
* Creates a new instance.
*/
public ObjectSerializationEncoder()
{
}
/**
* Returns the allowed maximum size of the encoded object.
* If the size of the encoded object exceeds this value, this encoder
* will throw a {@link IllegalArgumentException}. The default value
* is {@link Integer#MAX_VALUE}.
*/
public int getMaxObjectSize()
{
return maxObjectSize;
}
/**
* Sets the allowed maximum size of the encoded object.
* If the size of the encoded object exceeds this value, this encoder
* will throw a {@link IllegalArgumentException}. The default value
* is {@link Integer#MAX_VALUE}.
*/
public void setMaxObjectSize( int maxObjectSize )
{
if( maxObjectSize <= 0 )
{
throw new IllegalArgumentException( "maxObjectSize: " + maxObjectSize );
}
this.maxObjectSize = maxObjectSize;
}
public void encode( IoSession session, Object message, ProtocolEncoderOutput out ) throws Exception
{
if( !( message instanceof Serializable ) )
{
throw new NotSerializableException();
}
ByteBuffer buf = ByteBuffer.allocate( 64 );
buf.setAutoExpand( true );
buf.putObject( message );
int objectSize = buf.position() - 4;
if( objectSize > maxObjectSize )
{
buf.release();
throw new IllegalArgumentException( "The encoded object is too big: " + objectSize + " (> " + maxObjectSize + ')' );
}
buf.flip();
out.write( buf );
}
}