openflow-protocol-impl/src/main/java/org/opendaylight/openflowjava/protocol/impl/deserialization/factories/MeterModInputMessageFactory.java

   1 /*
   2  * Copyright (c) 2015 NetIDE Consortium 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 package org.opendaylight.openflowjava.protocol.impl.deserialization.factories;
   9
  10 import io.netty.buffer.ByteBuf;
  11 import java.util.ArrayList;
  12 import java.util.List;
  13 import org.opendaylight.openflowjava.protocol.api.extensibility.DeserializerRegistry;
  14 import org.opendaylight.openflowjava.protocol.api.extensibility.DeserializerRegistryInjector;
  15 import org.opendaylight.openflowjava.protocol.api.extensibility.OFDeserializer;
  16 import org.opendaylight.openflowjava.protocol.api.util.EncodeConstants;
  17 import org.opendaylight.openflowjava.util.ExperimenterDeserializerKeyFactory;
  18 import org.opendaylight.yang.gen.v1.urn.opendaylight.openflow.common.types.rev130731.MeterBandType;
  19 import org.opendaylight.yang.gen.v1.urn.opendaylight.openflow.common.types.rev130731.MeterFlags;
  20 import org.opendaylight.yang.gen.v1.urn.opendaylight.openflow.common.types.rev130731.MeterId;
  21 import org.opendaylight.yang.gen.v1.urn.opendaylight.openflow.common.types.rev130731.MeterModCommand;
  22 import org.opendaylight.yang.gen.v1.urn.opendaylight.openflow.protocol.rev130731.MeterModInput;
  23 import org.opendaylight.yang.gen.v1.urn.opendaylight.openflow.protocol.rev130731.MeterModInputBuilder;
  24 import org.opendaylight.yang.gen.v1.urn.opendaylight.openflow.protocol.rev130731.meter.band.header.meter.band.MeterBandDropCaseBuilder;
  25 import org.opendaylight.yang.gen.v1.urn.opendaylight.openflow.protocol.rev130731.meter.band.header.meter.band.MeterBandDscpRemarkCaseBuilder;
  26 import org.opendaylight.yang.gen.v1.urn.opendaylight.openflow.protocol.rev130731.meter.band.header.meter.band.MeterBandExperimenterCase;
  27 import org.opendaylight.yang.gen.v1.urn.opendaylight.openflow.protocol.rev130731.meter.band.header.meter.band.meter.band.drop._case.MeterBandDropBuilder;
  28 import org.opendaylight.yang.gen.v1.urn.opendaylight.openflow.protocol.rev130731.meter.band.header.meter.band.meter.band.dscp.remark._case.MeterBandDscpRemarkBuilder;
  29 import org.opendaylight.yang.gen.v1.urn.opendaylight.openflow.protocol.rev130731.meter.mod.Bands;
  30 import org.opendaylight.yang.gen.v1.urn.opendaylight.openflow.protocol.rev130731.meter.mod.BandsBuilder;
  31
  32 /**
  33  * @author giuseppex.petralia@intel.com
  34  *
  35  */
  36 public class MeterModInputMessageFactory implements OFDeserializer<MeterModInput>, DeserializerRegistryInjector {
  37
  38     private DeserializerRegistry registry;
  39     private static final byte PADDING_IN_METER_BAND_DROP_HEADER = 4;
  40     private static final byte PADDING_IN_METER_BAND_DSCP_HEADER = 3;
  41
  42     @Override
  43     public void injectDeserializerRegistry(DeserializerRegistry deserializerRegistry) {
  44         registry = deserializerRegistry;
  45     }
  46
  47     @Override
  48     public MeterModInput deserialize(ByteBuf rawMessage) {
  49         MeterModInputBuilder builder = new MeterModInputBuilder();
  50         builder.setVersion((short) EncodeConstants.OF13_VERSION_ID);
  51         builder.setXid(rawMessage.readUnsignedInt());
  52         builder.setCommand(MeterModCommand.forValue(rawMessage.readUnsignedShort()));
  53         builder.setFlags(createMeterFlags(rawMessage.readUnsignedShort()));
  54         builder.setMeterId(new MeterId(rawMessage.readUnsignedInt()));
  55         List<Bands> bandsList = new ArrayList<>();
  56         while (rawMessage.readableBytes() > 0) {
  57             BandsBuilder bandsBuilder = new BandsBuilder();
  58             int bandStartIndex = rawMessage.readerIndex();
  59             int bandType = rawMessage.readUnsignedShort();
  60             switch (bandType) {
  61             case 1:
  62                 MeterBandDropCaseBuilder bandDropCaseBuilder = new MeterBandDropCaseBuilder();
  63                 MeterBandDropBuilder bandDropBuilder = new MeterBandDropBuilder();
  64                 bandDropBuilder.setType(MeterBandType.forValue(bandType));
  65                 rawMessage.readUnsignedShort();
  66                 bandDropBuilder.setRate(rawMessage.readUnsignedInt());
  67                 bandDropBuilder.setBurstSize(rawMessage.readUnsignedInt());
  68                 rawMessage.skipBytes(PADDING_IN_METER_BAND_DROP_HEADER);
  69                 bandDropCaseBuilder.setMeterBandDrop(bandDropBuilder.build());
  70                 bandsBuilder.setMeterBand(bandDropCaseBuilder.build());
  71                 break;
  72             case 2:
  73                 MeterBandDscpRemarkCaseBuilder bandDscpRemarkCaseBuilder = new MeterBandDscpRemarkCaseBuilder();
  74                 MeterBandDscpRemarkBuilder bandDscpRemarkBuilder = new MeterBandDscpRemarkBuilder();
  75                 bandDscpRemarkBuilder.setType(MeterBandType.forValue(bandType));
  76                 rawMessage.readUnsignedShort();
  77                 bandDscpRemarkBuilder.setRate(rawMessage.readUnsignedInt());
  78                 bandDscpRemarkBuilder.setBurstSize(rawMessage.readUnsignedInt());
  79                 bandDscpRemarkBuilder.setPrecLevel(rawMessage.readUnsignedByte());
  80                 rawMessage.skipBytes(PADDING_IN_METER_BAND_DSCP_HEADER);
  81                 bandDscpRemarkCaseBuilder.setMeterBandDscpRemark(bandDscpRemarkBuilder.build());
  82                 bandsBuilder.setMeterBand(bandDscpRemarkCaseBuilder.build());
  83                 break;
  84             case 0xFFFF:
  85                 long expId = rawMessage
  86                         .getUnsignedInt(rawMessage.readerIndex() + 2 * EncodeConstants.SIZE_OF_INT_IN_BYTES);
  87                 rawMessage.readerIndex(bandStartIndex);
  88                 OFDeserializer<MeterBandExperimenterCase> deserializer = registry
  89                         .getDeserializer(ExperimenterDeserializerKeyFactory
  90                                 .createMeterBandDeserializerKey(EncodeConstants.OF13_VERSION_ID, expId));
  91                 bandsBuilder.setMeterBand(deserializer.deserialize(rawMessage));
  92                 break;
  93             }
  94             bandsList.add(bandsBuilder.build());
  95         }
  96         builder.setBands(bandsList);
  97         return builder.build();
  98     }
  99
 100     private static MeterFlags createMeterFlags(int input) {
 101         final Boolean mfKBPS = (input & (1 << 0)) != 0;
 102         final Boolean mfPKTPS = (input & (1 << 1)) != 0;
 103         final Boolean mfBURST = (input & (1 << 2)) != 0;
 104         final Boolean mfSTATS = (input & (1 << 3)) != 0;
 105         return new MeterFlags(mfBURST, mfKBPS, mfPKTPS, mfSTATS);
 106     }
 107
 108 }