/*
* Copyright 2013 Basho Technologies Inc.
*
* 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 com.basho.riak.client.core.netty;
import com.basho.riak.client.core.RiakMessage;
import io.netty.buffer.ByteBuf;
import io.netty.channel.ChannelHandlerContext;
import io.netty.handler.codec.ByteToMessageCodec;
import java.util.List;
/**
*
* @author Brian Roach <roach at basho dot com>
*/
public class RiakMessageCodec extends ByteToMessageCodec<RiakMessage>
{
@Override
protected void encode(ChannelHandlerContext ctx, RiakMessage msg, ByteBuf out) throws Exception
{
int length = msg.getData().length + 1;
out.writeInt(length);
out.writeByte(msg.getCode());
out.writeBytes(msg.getData());
}
@Override
protected void decode(ChannelHandlerContext ctx, ByteBuf in, List<Object> out) throws Exception
{
// Make sure we have 4 bytes
if (in.readableBytes() >= 4)
{
in.markReaderIndex();
int length = in.readInt();
// See if we have the full frame.
if (in.readableBytes() < length)
{
in.resetReaderIndex();
return;
}
else
{
byte code = in.readByte();
byte[] array = new byte[length - 1];
in.readBytes(array);
out.add(new RiakMessage(code,array));
}
}
}
}