Madan Jampani | ab6d311 | 2014-10-02 16:30:14 -0700 | [diff] [blame] | 1 | package org.onlab.netty; |
| 2 | |
Madan Jampani | 29e5dfd | 2014-10-07 17:26:25 -0700 | [diff] [blame^] | 3 | import org.slf4j.Logger; |
| 4 | import org.slf4j.LoggerFactory; |
| 5 | |
Madan Jampani | ab6d311 | 2014-10-02 16:30:14 -0700 | [diff] [blame] | 6 | import io.netty.buffer.ByteBuf; |
Madan Jampani | ddf7622 | 2014-10-04 23:48:44 -0700 | [diff] [blame] | 7 | import io.netty.channel.ChannelHandler.Sharable; |
Madan Jampani | ab6d311 | 2014-10-02 16:30:14 -0700 | [diff] [blame] | 8 | import io.netty.channel.ChannelHandlerContext; |
| 9 | import io.netty.handler.codec.MessageToByteEncoder; |
| 10 | |
| 11 | /** |
| 12 | * Encode InternalMessage out into a byte buffer. |
| 13 | */ |
Madan Jampani | ddf7622 | 2014-10-04 23:48:44 -0700 | [diff] [blame] | 14 | @Sharable |
Madan Jampani | ab6d311 | 2014-10-02 16:30:14 -0700 | [diff] [blame] | 15 | public class MessageEncoder extends MessageToByteEncoder<InternalMessage> { |
| 16 | |
Madan Jampani | 29e5dfd | 2014-10-07 17:26:25 -0700 | [diff] [blame^] | 17 | private final Logger log = LoggerFactory.getLogger(getClass()); |
| 18 | |
Madan Jampani | ab6d311 | 2014-10-02 16:30:14 -0700 | [diff] [blame] | 19 | // onosiscool in ascii |
| 20 | public static final byte[] PREAMBLE = "onosiscool".getBytes(); |
Madan Jampani | 938aa43 | 2014-10-04 17:37:23 -0700 | [diff] [blame] | 21 | public static final int HEADER_VERSION = 1; |
| 22 | public static final int SERIALIZER_VERSION = 1; |
| 23 | |
Madan Jampani | ab6d311 | 2014-10-02 16:30:14 -0700 | [diff] [blame] | 24 | |
Madan Jampani | 53e44e6 | 2014-10-07 12:39:51 -0700 | [diff] [blame] | 25 | private static final KryoSerializer SERIALIZER = new KryoSerializer(); |
Madan Jampani | ab6d311 | 2014-10-02 16:30:14 -0700 | [diff] [blame] | 26 | |
| 27 | @Override |
Madan Jampani | 86ed055 | 2014-10-03 16:45:42 -0700 | [diff] [blame] | 28 | protected void encode( |
| 29 | ChannelHandlerContext context, |
| 30 | InternalMessage message, |
Madan Jampani | ab6d311 | 2014-10-02 16:30:14 -0700 | [diff] [blame] | 31 | ByteBuf out) throws Exception { |
| 32 | |
Madan Jampani | 938aa43 | 2014-10-04 17:37:23 -0700 | [diff] [blame] | 33 | // write version |
| 34 | out.writeInt(HEADER_VERSION); |
| 35 | |
Madan Jampani | ab6d311 | 2014-10-02 16:30:14 -0700 | [diff] [blame] | 36 | // write preamble |
| 37 | out.writeBytes(PREAMBLE); |
| 38 | |
Madan Jampani | 53e44e6 | 2014-10-07 12:39:51 -0700 | [diff] [blame] | 39 | try { |
| 40 | SERIALIZER.encode(message); |
| 41 | } catch (Exception e) { |
| 42 | e.printStackTrace(); |
| 43 | } |
| 44 | byte[] payload = SERIALIZER.encode(message); |
Madan Jampani | ab6d311 | 2014-10-02 16:30:14 -0700 | [diff] [blame] | 45 | |
Madan Jampani | 86ed055 | 2014-10-03 16:45:42 -0700 | [diff] [blame] | 46 | // write payload length |
Madan Jampani | ab6d311 | 2014-10-02 16:30:14 -0700 | [diff] [blame] | 47 | out.writeInt(payload.length); |
| 48 | |
Yuta HIGUCHI | 993d7aa | 2014-10-06 22:54:38 -0700 | [diff] [blame] | 49 | // write payloadSerializer version |
Madan Jampani | 938aa43 | 2014-10-04 17:37:23 -0700 | [diff] [blame] | 50 | out.writeInt(SERIALIZER_VERSION); |
| 51 | |
Madan Jampani | 86ed055 | 2014-10-03 16:45:42 -0700 | [diff] [blame] | 52 | // write payload. |
Madan Jampani | ab6d311 | 2014-10-02 16:30:14 -0700 | [diff] [blame] | 53 | out.writeBytes(payload); |
| 54 | } |
Madan Jampani | 29e5dfd | 2014-10-07 17:26:25 -0700 | [diff] [blame^] | 55 | |
| 56 | @Override |
| 57 | public void exceptionCaught(ChannelHandlerContext context, Throwable cause) { |
| 58 | log.error("Exception inside channel handling pipeline.", cause); |
| 59 | context.close(); |
| 60 | } |
Madan Jampani | ab6d311 | 2014-10-02 16:30:14 -0700 | [diff] [blame] | 61 | } |