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

   1 /*
   2  * Copyright (c) 2013 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.channel.ChannelHandlerContext;
  13 import io.netty.handler.codec.MessageToByteEncoder;
  14 import io.netty.util.concurrent.Future;
  15
  16 import org.opendaylight.openflowjava.protocol.impl.core.connection.MessageListenerWrapper;
  17 import org.opendaylight.openflowjava.protocol.impl.serialization.SerializationFactory;
  18 import org.opendaylight.openflowjava.statistics.CounterEventTypes;
  19 import org.opendaylight.openflowjava.statistics.StatisticsCounters;
  20 import org.slf4j.Logger;
  21 import org.slf4j.LoggerFactory;
  22
  23 /**
  24  * Transforms OpenFlow Protocol messages to POJOs
  25  * @author michal.polkorab
  26  * @author timotej.kubas
  27  */
  28 public class OFEncoder extends MessageToByteEncoder<MessageListenerWrapper> {
  29
  30     private static final Logger LOGGER = LoggerFactory.getLogger(OFEncoder.class);
  31     private SerializationFactory serializationFactory;
  32     private StatisticsCounters statisticsCounters;
  33
  34     /** Constructor of class */
  35     public OFEncoder() {
  36         statisticsCounters = StatisticsCounters.getInstance();
  37         LOGGER.trace("Creating OF13Encoder");
  38     }
  39
  40     @Override
  41     protected void encode(ChannelHandlerContext ctx, MessageListenerWrapper wrapper, ByteBuf out)
  42             throws Exception {
  43         LOGGER.trace("Encoding");
  44         try {
  45             serializationFactory.messageToBuffer(wrapper.getMsg().getVersion(), out, wrapper.getMsg());
  46             statisticsCounters.incrementCounter(CounterEventTypes.DS_ENCODE_SUCCESS);
  47         } catch(Exception e) {
  48             LOGGER.warn("Message serialization failed ", e);
  49             statisticsCounters.incrementCounter(CounterEventTypes.DS_ENCODE_FAIL);
  50             Future<Void> newFailedFuture = ctx.newFailedFuture(e);
  51             wrapper.getListener().operationComplete(newFailedFuture);
  52             out.clear();
  53             return;
  54         }
  55     }
  56
  57     /**
  58      * @param serializationFactory
  59      */
  60     public void setSerializationFactory(SerializationFactory serializationFactory) {
  61         this.serializationFactory = serializationFactory;
  62     }
  63
  64 }