openflowjava/openflow-protocol-impl/src/main/java/org/opendaylight/openflowjava/protocol/impl/core/OFDatagramPacketEncoder.java

   1 /*
   2  * Copyright (c) 2014 Pantheon Technologies s.r.o. and others. All rights reserved.
   3  *
   4  * This program and the accompanying materials are made available under the
   5  * terms of the Eclipse Public License v1.0 which accompanies this distribution,
   6  * and is available at http://www.eclipse.org/legal/epl-v10.html
   7  */
   8
   9 package org.opendaylight.openflowjava.protocol.impl.core;
  10
  11 import io.netty.buffer.ByteBuf;
  12 import io.netty.buffer.PooledByteBufAllocator;
  13 import io.netty.channel.ChannelHandlerContext;
  14 import io.netty.channel.socket.DatagramPacket;
  15 import io.netty.handler.codec.MessageToMessageEncoder;
  16 import io.netty.util.concurrent.Future;
  17 import java.util.List;
  18 import org.opendaylight.openflowjava.protocol.impl.core.connection.UdpMessageListenerWrapper;
  19 import org.opendaylight.openflowjava.protocol.impl.serialization.SerializationFactory;
  20 import org.slf4j.Logger;
  21 import org.slf4j.LoggerFactory;
  22
  23 /**
  24  * Encoder for datagram packets.
  25  *
  26  * @author michal.polkorab
  27  */
  28 public class OFDatagramPacketEncoder extends MessageToMessageEncoder<UdpMessageListenerWrapper> {
  29
  30     private static final Logger LOG = LoggerFactory.getLogger(OFDatagramPacketEncoder.class);
  31     private SerializationFactory serializationFactory;
  32
  33     @Override
  34     @SuppressWarnings("checkstyle:IllegalCatch")
  35     protected void encode(final ChannelHandlerContext ctx,
  36             final UdpMessageListenerWrapper wrapper, final List<Object> out) throws Exception {
  37         LOG.trace("Encoding");
  38         try {
  39             ByteBuf buffer = PooledByteBufAllocator.DEFAULT.buffer();
  40             serializationFactory.messageToBuffer(wrapper.getMsg().getVersion(), buffer, wrapper.getMsg());
  41             out.add(new DatagramPacket(buffer, wrapper.getAddress()));
  42         } catch (RuntimeException e) {
  43             LOG.warn("Message serialization failed: {}", e.getMessage());
  44             Future<Void> newFailedFuture = ctx.newFailedFuture(e);
  45             wrapper.getListener().operationComplete(newFailedFuture);
  46             return;
  47         }
  48     }
  49
  50     public void setSerializationFactory(final SerializationFactory serializationFactory) {
  51         this.serializationFactory = serializationFactory;
  52     }
  53 }