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.serialization.factories;
11 import io.netty.buffer.ByteBuf;
13 import java.util.HashMap;
14 import java.util.List;
17 import org.opendaylight.openflowjava.protocol.impl.serialization.OFSerializer;
18 import org.opendaylight.openflowjava.protocol.impl.util.ByteBufUtils;
19 import org.opendaylight.yang.gen.v1.urn.opendaylight.openflow.common.types.rev130731.MeterFlags;
20 import org.opendaylight.yang.gen.v1.urn.opendaylight.openflow.protocol.rev130731.MeterBandCommons;
21 import org.opendaylight.yang.gen.v1.urn.opendaylight.openflow.protocol.rev130731.MeterModInput;
22 import org.opendaylight.yang.gen.v1.urn.opendaylight.openflow.protocol.rev130731.meter.band.header.MeterBand;
23 import org.opendaylight.yang.gen.v1.urn.opendaylight.openflow.protocol.rev130731.meter.band.header.meter.band.MeterBandDrop;
24 import org.opendaylight.yang.gen.v1.urn.opendaylight.openflow.protocol.rev130731.meter.band.header.meter.band.MeterBandDscpRemark;
25 import org.opendaylight.yang.gen.v1.urn.opendaylight.openflow.protocol.rev130731.meter.band.header.meter.band.MeterBandExperimenter;
26 import org.opendaylight.yang.gen.v1.urn.opendaylight.openflow.protocol.rev130731.meter.mod.Bands;
29 * Translates MeterMod messages
30 * @author timotej.kubas
31 * @author michal.polkorab
33 public class MeterModInputMessageFactory implements OFSerializer<MeterModInput> {
34 private static final byte MESSAGE_TYPE = 29;
35 private static final int MESSAGE_LENGTH = 16;
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;
39 private static MeterModInputMessageFactory instance;
41 private MeterModInputMessageFactory() {
46 * @return singleton factory
48 public static synchronized MeterModInputMessageFactory getInstance() {
49 if (instance == null) {
50 instance = new MeterModInputMessageFactory();
56 public void messageToBuffer(short version, ByteBuf out,
57 MeterModInput message) {
58 ByteBufUtils.writeOFHeader(instance, message, out);
59 out.writeShort(message.getCommand().getIntValue());
60 out.writeShort(createMeterFlagsBitmask(message.getFlags()));
61 out.writeInt(message.getMeterId().getValue().intValue());
62 encodeBands(message.getBands(), out);
66 public int computeLength(MeterModInput message) {
67 int length = MESSAGE_LENGTH;
68 if (message.getBands() != null) {
69 length += message.getBands().size() * LENGTH_OF_METER_BANDS;
75 public byte getMessageType() {
79 private static int createMeterFlagsBitmask(MeterFlags flags) {
80 int meterFlagBitmask = 0;
81 Map<Integer, Boolean> meterModFlagsMap = new HashMap<>();
82 meterModFlagsMap.put(0, flags.isOFPMFKBPS());
83 meterModFlagsMap.put(1, flags.isOFPMFPKTPS());
84 meterModFlagsMap.put(2, flags.isOFPMFBURST());
85 meterModFlagsMap.put(3, flags.isOFPMFSTATS());
87 meterFlagBitmask = ByteBufUtils.fillBitMaskFromMap(meterModFlagsMap);
88 return meterFlagBitmask;
91 private static void encodeBands(List<Bands> bands, ByteBuf outBuffer) {
93 for (Bands currentBand : bands) {
94 MeterBand meterBand = currentBand.getMeterBand();
95 writeBandCommonFields((MeterBandCommons) meterBand, outBuffer);
96 if (meterBand instanceof MeterBandDrop) {
97 ByteBufUtils.padBuffer(PADDING_IN_METER_BAND_DROP, outBuffer);
98 } else if (meterBand instanceof MeterBandDscpRemark) {
99 MeterBandDscpRemark dscpRemarkBand = (MeterBandDscpRemark) meterBand;
100 outBuffer.writeByte(dscpRemarkBand.getPrecLevel());
101 ByteBufUtils.padBuffer(PADDING_IN_METER_BAND_DSCP_REMARK, outBuffer);
102 } else if (meterBand instanceof MeterBandExperimenter) {
103 MeterBandExperimenter experimenterBand = (MeterBandExperimenter) meterBand;
104 outBuffer.writeInt(experimenterBand.getExperimenter().intValue());
110 private static void writeBandCommonFields(MeterBandCommons meterBand, ByteBuf outBuffer) {
111 outBuffer.writeShort(meterBand.getType().getIntValue());
112 outBuffer.writeShort(LENGTH_OF_METER_BANDS);
113 outBuffer.writeInt(meterBand.getRate().intValue());
114 outBuffer.writeInt(meterBand.getBurstSize().intValue());