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 import org.opendaylight.openflowjava.protocol.impl.core.connection.MessageListenerWrapper;
  16 import org.opendaylight.openflowjava.protocol.impl.serialization.SerializationFactory;
  17 import org.opendaylight.openflowjava.statistics.CounterEventTypes;
  18 import org.opendaylight.openflowjava.statistics.StatisticsCounters;
  19 import org.opendaylight.yang.gen.v1.urn.opendaylight.openflow.protocol.rev130731.FlowModInput;
  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 LOG = LoggerFactory.getLogger(OFEncoder.class);
  31     private SerializationFactory serializationFactory;
  32     private final StatisticsCounters statisticsCounters;
  33
  34     /** Constructor of class */
  35     public OFEncoder() {
  36         statisticsCounters = StatisticsCounters.getInstance();
  37         LOG.trace("Creating OF13Encoder");
  38     }
  39
  40     @Override
  41     protected void encode(final ChannelHandlerContext ctx, final MessageListenerWrapper wrapper, final ByteBuf out)
  42             throws Exception {
  43         LOG.trace("Encoding");
  44         try {
  45             serializationFactory.messageToBuffer(wrapper.getMsg().getVersion(), out, wrapper.getMsg());
  46             if(wrapper.getMsg() instanceof FlowModInput){
  47                 statisticsCounters.incrementCounter(CounterEventTypes.DS_FLOW_MODS_SENT);
  48             }
  49             statisticsCounters.incrementCounter(CounterEventTypes.DS_ENCODE_SUCCESS);
  50         } catch(final Exception e) {
  51             LOG.warn("Message serialization failed ", e);
  52             statisticsCounters.incrementCounter(CounterEventTypes.DS_ENCODE_FAIL);
  53             if (wrapper.getListener() != null) {
  54                 final Future<Void> newFailedFuture = ctx.newFailedFuture(e);
  55                 wrapper.getListener().operationComplete(newFailedFuture);
  56             }
  57             out.clear();
  58             return;
  59         }
  60     }
  61
  62     /**
  63      * @param serializationFactory
  64      */
  65     public void setSerializationFactory(final SerializationFactory serializationFactory) {
  66         this.serializationFactory = serializationFactory;
  67     }
  68
  69 }