divconq.bus.net.StreamEncoder.java Source code

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Here is the source code for divconq.bus.net.StreamEncoder.java

Source

/* ************************************************************************
#
#  DivConq
#
#  http://divconq.com/
#
#  Copyright:
#    Copyright 2014 eTimeline, LLC. All rights reserved.
#
#  License:
#    See the license.txt file in the project's top-level directory for details.
#
#  Authors:
#    * Andy White
#
************************************************************************ */
package divconq.bus.net;

import io.netty.buffer.ByteBuf;
import io.netty.channel.ChannelHandlerContext;
import io.netty.handler.codec.MessageToByteEncoder;

public class StreamEncoder extends MessageToByteEncoder<StreamMessage> {

    @Override
    protected void encode(ChannelHandlerContext ctx, StreamMessage msg, ByteBuf out) throws Exception {
        msg.toSerial(out);

        if (msg.hasData()) {
            ByteBuf bb = msg.getData();

            try {
                bb.readerIndex(0);
                out.writeInt(bb.readableBytes());
                out.writeBytes(bb);
            } finally {
                bb.release(); // buffer no longer needed
            }
        } else
            out.writeInt(0);
    }
}