org.apache.mina.filter.codec.serialization.ObjectSerializationEncoder Maven / Gradle / Ivy
/**
* Copyright 2007-2015, Kaazing Corporation. All rights reserved.
*
* 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 org.apache.mina.filter.codec.serialization;
import java.io.NotSerializableException;
import java.io.Serializable;
import org.apache.mina.core.buffer.IoBuffer;
import org.apache.mina.core.session.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 IoBuffer#putObject(Object)}.
*
* @author Apache MINA Project
*/
public class ObjectSerializationEncoder extends ProtocolEncoderAdapter {
private int maxObjectSize = Integer.MAX_VALUE; // 2GB
/**
* Creates a new instance.
*/
public ObjectSerializationEncoder() {
// Do nothing
}
/**
* 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();
}
IoBuffer buf = IoBuffer.allocate(64);
buf.setAutoExpand(true);
buf.putObject(message);
int objectSize = buf.position() - 4;
if (objectSize > maxObjectSize) {
throw new IllegalArgumentException(
"The encoded object is too big: " + objectSize + " (> "
+ maxObjectSize + ')');
}
buf.flip();
out.write(buf);
}
}