2 * Copyright (c) 2013 Pantheon Technologies s.r.o. and others. All rights reserved.
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
9 package org.opendaylight.openflowjava.protocol.impl.core;
11 import io.netty.channel.ChannelHandlerContext;
12 import io.netty.handler.codec.MessageToMessageDecoder;
14 import java.util.List;
16 import org.opendaylight.openflowjava.protocol.impl.deserialization.DeserializationFactory;
17 import org.opendaylight.openflowjava.statistics.CounterEventTypes;
18 import org.opendaylight.openflowjava.statistics.StatisticsCounters;
19 import org.opendaylight.openflowjava.util.ByteBufUtils;
20 import org.opendaylight.yangtools.yang.binding.DataObject;
21 import org.slf4j.Logger;
22 import org.slf4j.LoggerFactory;
25 * Transforms OpenFlow Protocol messages to POJOs
26 * @author michal.polkorab
28 public class OFDecoder extends MessageToMessageDecoder<VersionMessageWrapper> {
30 private static final Logger LOGGER = LoggerFactory.getLogger(OFDecoder.class);
31 private final StatisticsCounters statisticsCounter;
33 // TODO: make this final?
34 private DeserializationFactory deserializationFactory;
37 * Constructor of class
40 LOGGER.trace("Creating OF 1.3 Decoder");
41 // TODO: pass as argument
42 statisticsCounter = StatisticsCounters.getInstance();
46 protected void decode(ChannelHandlerContext ctx, VersionMessageWrapper msg,
47 List<Object> out) throws Exception {
48 statisticsCounter.incrementCounter(CounterEventTypes.US_RECEIVED_IN_OFJAVA);
49 if (LOGGER.isDebugEnabled()) {
50 LOGGER.debug("VersionMessageWrapper received");
51 LOGGER.debug("<< {}", ByteBufUtils.byteBufToHexString(msg.getMessageBuffer()));
55 final DataObject dataObject = deserializationFactory.deserialize(msg.getMessageBuffer(),
57 if (dataObject == null) {
58 LOGGER.warn("Translated POJO is null");
59 statisticsCounter.incrementCounter(CounterEventTypes.US_DECODE_FAIL);
62 statisticsCounter.incrementCounter(CounterEventTypes.US_DECODE_SUCCESS);
64 } catch (Exception e) {
65 LOGGER.warn("Message deserialization failed", e);
66 statisticsCounter.incrementCounter(CounterEventTypes.US_DECODE_FAIL);
68 msg.getMessageBuffer().release();
73 * @param deserializationFactory
75 public void setDeserializationFactory(DeserializationFactory deserializationFactory) {
76 this.deserializationFactory = deserializationFactory;