org.springframework.messaging.tcp.reactor.AbstractNioBufferReactorNettyCodec Maven / Gradle / Ivy
/*
* Copyright 2002-2018 the original author or authors.
*
* 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.springframework.messaging.tcp.reactor;
import java.nio.ByteBuffer;
import java.util.Collection;
import java.util.List;
import io.netty.buffer.ByteBuf;
import org.springframework.messaging.Message;
/**
* Convenient base class for {@link ReactorNettyCodec} implementations that need
* to work with NIO {@link ByteBuffer ByteBuffers}.
*
* @author Rossen Stoyanchev
* @since 5.0
* @param the message payload type
*/
public abstract class AbstractNioBufferReactorNettyCodec
implements ReactorNettyCodec
{
@Override
public Collection> decode(ByteBuf inputBuffer) {
ByteBuffer nioBuffer = inputBuffer.nioBuffer();
int start = nioBuffer.position();
List> messages = decodeInternal(nioBuffer);
inputBuffer.skipBytes(nioBuffer.position() - start);
return messages;
}
@Override
public void encode(Message message, ByteBuf outputBuffer) {
outputBuffer.writeBytes(encodeInternal(message));
}
protected abstract List> decodeInternal(ByteBuffer nioBuffer);
protected abstract ByteBuffer encodeInternal(Message message);
}