2 * Copyright (c) 2016 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
8 package org.opendaylight.openflowplugin.impl.protocol.serialization.messages;
10 import com.google.common.base.MoreObjects;
11 import io.netty.buffer.ByteBuf;
12 import java.util.Optional;
13 import org.opendaylight.openflowjava.protocol.api.extensibility.OFSerializer;
14 import org.opendaylight.openflowjava.protocol.api.extensibility.SerializerRegistry;
15 import org.opendaylight.openflowjava.protocol.api.extensibility.SerializerRegistryInjector;
16 import org.opendaylight.openflowjava.protocol.api.keys.ExperimenterIdSerializerKey;
17 import org.opendaylight.openflowjava.protocol.api.util.EncodeConstants;
18 import org.opendaylight.openflowjava.util.ByteBufUtils;
19 import org.opendaylight.yang.gen.v1.urn.opendaylight.meter.types.rev130918.MeterFlags;
20 import org.opendaylight.yang.gen.v1.urn.opendaylight.meter.types.rev130918.MeterMessage;
21 import org.opendaylight.yang.gen.v1.urn.opendaylight.meter.types.rev130918.band.type.band.type.Drop;
22 import org.opendaylight.yang.gen.v1.urn.opendaylight.meter.types.rev130918.band.type.band.type.DscpRemark;
23 import org.opendaylight.yang.gen.v1.urn.opendaylight.meter.types.rev130918.band.type.band.type.Experimenter;
24 import org.opendaylight.yang.gen.v1.urn.opendaylight.meter.types.rev130918.meter.MeterBandHeaders;
25 import org.opendaylight.yang.gen.v1.urn.opendaylight.openflow.common.types.rev130731.MeterBandType;
26 import org.slf4j.Logger;
27 import org.slf4j.LoggerFactory;
30 * Translates MeterMod messages
31 * OF protocol versions: 1.3.
33 public class MeterMessageSerializer extends AbstractMessageSerializer<MeterMessage> implements
34 SerializerRegistryInjector {
35 private static final Logger LOG = LoggerFactory.getLogger(MeterMessageSerializer.class);
36 private static final short LENGTH_OF_METER_BANDS = 16;
37 private static final short PADDING_IN_METER_BAND_DROP = 4;
38 private static final short PADDING_IN_METER_BAND_DSCP_REMARK = 3;
40 private SerializerRegistry registry;
43 public void serialize(final MeterMessage message, final ByteBuf outBuffer) {
44 final int index = outBuffer.writerIndex();
45 super.serialize(message, outBuffer);
46 outBuffer.writeShort(message.getCommand().getIntValue());
47 outBuffer.writeShort(createMeterFlagsBitMask(
48 MoreObjects.firstNonNull(message.getFlags(), new MeterFlags(false, false, true, false))));
49 outBuffer.writeInt(message.getMeterId().getValue().intValue());
50 serializeBands(message.getMeterBandHeaders(), outBuffer);
51 outBuffer.setShort(index + 2, outBuffer.writerIndex() - index);
55 protected byte getMessageType() {
59 private void serializeBands(final MeterBandHeaders meterBandHeaders, final ByteBuf outBuffer) {
60 if (meterBandHeaders != null && meterBandHeaders.getMeterBandHeader() != null) {
61 meterBandHeaders.nonnullMeterBandHeader().values().forEach(meterBandHeader ->
62 Optional.ofNullable(meterBandHeader.getMeterBandTypes())
63 .flatMap(m -> Optional.ofNullable(m.getFlags()))
64 .ifPresent(flags -> Optional.ofNullable(meterBandHeader.getBandType()).ifPresent(type -> {
65 if (flags.isOfpmbtDrop()) {
66 final Drop band = (Drop) type;
67 outBuffer.writeShort(MeterBandType.OFPMBTDROP.getIntValue());
69 outBuffer.writeShort(LENGTH_OF_METER_BANDS);
70 outBuffer.writeInt(band.getDropRate().intValue());
71 outBuffer.writeInt(band.getDropBurstSize().intValue());
72 outBuffer.writeZero(PADDING_IN_METER_BAND_DROP);
73 } else if (flags.isOfpmbtDscpRemark()) {
74 final DscpRemark band = (DscpRemark) type;
75 outBuffer.writeShort(MeterBandType.OFPMBTDSCPREMARK.getIntValue());
77 outBuffer.writeShort(LENGTH_OF_METER_BANDS);
78 outBuffer.writeInt(band.getDscpRemarkRate().intValue());
79 outBuffer.writeInt(band.getDscpRemarkBurstSize().intValue());
80 outBuffer.writeByte(band.getPrecLevel().toJava());
81 outBuffer.writeZero(PADDING_IN_METER_BAND_DSCP_REMARK);
82 } else if (flags.isOfpmbtExperimenter()) {
83 final Experimenter band = (Experimenter) type;
85 // TODO: finish experimenter serialization
86 final ExperimenterIdSerializerKey<Experimenter> key =
87 new ExperimenterIdSerializerKey<>(
88 EncodeConstants.OF13_VERSION_ID,
89 band.getExperimenter().toJava(),
90 (Class<Experimenter>) type.implementedInterface());
93 final OFSerializer<Experimenter> serializer = registry.getSerializer(key);
94 serializer.serialize(band, outBuffer);
95 } catch (final IllegalStateException e) {
96 LOG.warn("Serializer for key: {} wasn't found", key, e);
104 public void injectSerializerRegistry(final SerializerRegistry serializerRegistry) {
105 registry = serializerRegistry;
108 private static int createMeterFlagsBitMask(final MeterFlags flags) {
109 return ByteBufUtils.fillBitMask(0,
111 flags.isMeterPktps(),
112 flags.isMeterBurst(),
113 flags.isMeterStats());