openflow-protocol-impl/src/main/java/org/opendaylight/openflowjava/protocol/impl/serialization/factories/MeterModInputMessageFactory.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.serialization.factories;
  10
  11 import io.netty.buffer.ByteBuf;
  12
  13 import java.util.List;
  14
  15 import org.opendaylight.openflowjava.protocol.api.extensibility.MessageTypeKey;
  16 import org.opendaylight.openflowjava.protocol.api.extensibility.OFSerializer;
  17 import org.opendaylight.openflowjava.protocol.api.extensibility.SerializerRegistry;
  18 import org.opendaylight.openflowjava.protocol.api.extensibility.SerializerRegistryInjector;
  19 import org.opendaylight.openflowjava.util.ByteBufUtils;
  20 import org.opendaylight.openflowjava.protocol.api.util.EncodeConstants;
  21 import org.opendaylight.yang.gen.v1.urn.opendaylight.openflow.common.types.rev130731.MeterFlags;
  22 import org.opendaylight.yang.gen.v1.urn.opendaylight.openflow.protocol.rev130731.MeterBandCommons;
  23 import org.opendaylight.yang.gen.v1.urn.opendaylight.openflow.protocol.rev130731.MeterModInput;
  24 import org.opendaylight.yang.gen.v1.urn.opendaylight.openflow.protocol.rev130731.meter.band.header.MeterBand;
  25 import org.opendaylight.yang.gen.v1.urn.opendaylight.openflow.protocol.rev130731.meter.band.header.meter.band.MeterBandDropCase;
  26 import org.opendaylight.yang.gen.v1.urn.opendaylight.openflow.protocol.rev130731.meter.band.header.meter.band.MeterBandDscpRemarkCase;
  27 import org.opendaylight.yang.gen.v1.urn.opendaylight.openflow.protocol.rev130731.meter.band.header.meter.band.MeterBandExperimenterCase;
  28 import org.opendaylight.yang.gen.v1.urn.opendaylight.openflow.protocol.rev130731.meter.band.header.meter.band.meter.band.drop._case.MeterBandDrop;
  29 import org.opendaylight.yang.gen.v1.urn.opendaylight.openflow.protocol.rev130731.meter.band.header.meter.band.meter.band.dscp.remark._case.MeterBandDscpRemark;
  30 import org.opendaylight.yang.gen.v1.urn.opendaylight.openflow.protocol.rev130731.meter.band.header.meter.band.meter.band.experimenter._case.MeterBandExperimenter;
  31 import org.opendaylight.yang.gen.v1.urn.opendaylight.openflow.protocol.rev130731.meter.mod.Bands;
  32
  33 /**
  34  * Translates MeterMod messages
  35  * @author timotej.kubas
  36  * @author michal.polkorab
  37  */
  38 public class MeterModInputMessageFactory implements OFSerializer<MeterModInput>,
  39         SerializerRegistryInjector {
  40
  41     private static final byte MESSAGE_TYPE = 29;
  42     private static final short LENGTH_OF_METER_BANDS = 16;
  43     private static final short PADDING_IN_METER_BAND_DROP = 4;
  44     private static final short PADDING_IN_METER_BAND_DSCP_REMARK = 3;
  45     private SerializerRegistry registry;
  46
  47     @Override
  48     public void serialize(final MeterModInput message, final ByteBuf outBuffer) {
  49         ByteBufUtils.writeOFHeader(MESSAGE_TYPE, message, outBuffer, EncodeConstants.EMPTY_LENGTH);
  50         outBuffer.writeShort(message.getCommand().getIntValue());
  51         outBuffer.writeShort(createMeterFlagsBitmask(message.getFlags()));
  52         outBuffer.writeInt(message.getMeterId().getValue().intValue());
  53         serializeBands(message.getBands(), outBuffer);
  54         ByteBufUtils.updateOFHeaderLength(outBuffer);
  55     }
  56
  57     private static int createMeterFlagsBitmask(final MeterFlags flags) {
  58         return ByteBufUtils.fillBitMask(0,
  59                 flags.isOFPMFKBPS(),
  60                 flags.isOFPMFPKTPS(),
  61                 flags.isOFPMFBURST(),
  62                 flags.isOFPMFSTATS());
  63     }
  64
  65     private void serializeBands(final List<Bands> bands, final ByteBuf outBuffer) {
  66         if (bands != null) {
  67             for (Bands currentBand : bands) {
  68                 MeterBand meterBand = currentBand.getMeterBand();
  69                 if (meterBand instanceof MeterBandDropCase) {
  70                     MeterBandDropCase dropBandCase = (MeterBandDropCase) meterBand;
  71                     MeterBandDrop dropBand = dropBandCase.getMeterBandDrop();
  72                     writeBandCommonFields(dropBand, outBuffer);
  73                     ByteBufUtils.padBuffer(PADDING_IN_METER_BAND_DROP, outBuffer);
  74                 } else if (meterBand instanceof MeterBandDscpRemarkCase) {
  75                     MeterBandDscpRemarkCase dscpRemarkBandCase = (MeterBandDscpRemarkCase) meterBand;
  76                     MeterBandDscpRemark dscpRemarkBand = dscpRemarkBandCase.getMeterBandDscpRemark();
  77                     writeBandCommonFields(dscpRemarkBand, outBuffer);
  78                     outBuffer.writeByte(dscpRemarkBand.getPrecLevel());
  79                     ByteBufUtils.padBuffer(PADDING_IN_METER_BAND_DSCP_REMARK, outBuffer);
  80                 } else if (meterBand instanceof MeterBandExperimenterCase) {
  81                     OFSerializer<MeterBandExperimenter> serializer = registry.getSerializer(
  82                             new MessageTypeKey<>(EncodeConstants.OF13_VERSION_ID, MeterBandExperimenter.class));
  83                     MeterBandExperimenterCase experimenterBandCase = (MeterBandExperimenterCase) meterBand;
  84                     MeterBandExperimenter experimenterBand = experimenterBandCase.getMeterBandExperimenter();
  85                     serializer.serialize(experimenterBand, outBuffer);
  86                 }
  87             }
  88         }
  89     }
  90
  91     private static void writeBandCommonFields(final MeterBandCommons meterBand, final ByteBuf outBuffer) {
  92         outBuffer.writeShort(meterBand.getType().getIntValue());
  93         outBuffer.writeShort(LENGTH_OF_METER_BANDS);
  94         outBuffer.writeInt(meterBand.getRate().intValue());
  95         outBuffer.writeInt(meterBand.getBurstSize().intValue());
  96     }
  97
  98     @Override
  99     public void injectSerializerRegistry(final SerializerRegistry serializerRegistry) {
 100         registry = serializerRegistry;
 101     }
 102
 103 }