mappingservice/implementation/src/main/java/org/opendaylight/lispflowmapping/implementation/serializer/address/LispTrafficEngineeringLCAFAddressSerializer.java

   1 /*
   2  * Copyright (c) 2013 Contextream, Inc. 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.lispflowmapping.implementation.serializer.address;
   9
  10 import java.nio.ByteBuffer;
  11 import java.util.ArrayList;
  12 import java.util.List;
  13
  14 import org.apache.commons.lang3.BooleanUtils;
  15 import org.opendaylight.lispflowmapping.implementation.serializer.address.factory.LispAFIAddressSerializerFactory;
  16 import org.opendaylight.lispflowmapping.implementation.util.ByteUtil;
  17 import org.opendaylight.lispflowmapping.implementation.util.LispAFIConvertor;
  18 import org.opendaylight.lispflowmapping.type.AddressFamilyNumberEnum;
  19 import org.opendaylight.lispflowmapping.type.LispCanonicalAddressFormatEnum;
  20 import org.opendaylight.yang.gen.v1.lispflowmapping.rev131031.LcafTrafficEngineeringAddress;
  21 import org.opendaylight.yang.gen.v1.lispflowmapping.rev131031.LispAFIAddress;
  22 import org.opendaylight.yang.gen.v1.lispflowmapping.rev131031.lcaftrafficengineeringaddress.Hops;
  23 import org.opendaylight.yang.gen.v1.lispflowmapping.rev131031.lcaftrafficengineeringaddress.HopsBuilder;
  24 import org.opendaylight.yang.gen.v1.lispflowmapping.rev131031.lispaddress.lispaddresscontainer.address.LcafTrafficEngineeringBuilder;
  25 import org.opendaylight.yang.gen.v1.lispflowmapping.rev131031.lispsimpleaddress.PrimitiveAddress;
  26 import org.opendaylight.yang.gen.v1.lispflowmapping.rev131031.reencaphop.HopBuilder;
  27
  28 public class LispTrafficEngineeringLCAFAddressSerializer extends LispLCAFAddressSerializer {
  29
  30     private static final LispTrafficEngineeringLCAFAddressSerializer INSTANCE = new LispTrafficEngineeringLCAFAddressSerializer();
  31
  32     // Private constructor prevents instantiation from other classes
  33     private LispTrafficEngineeringLCAFAddressSerializer() {
  34     }
  35
  36     public static LispTrafficEngineeringLCAFAddressSerializer getInstance() {
  37         return INSTANCE;
  38     }
  39
  40     @Override
  41     protected short getLcafLength(LispAFIAddress lispAddress) {
  42         short totalSize = 0;
  43         if (((LcafTrafficEngineeringAddress) lispAddress).getHops() != null) {
  44             for (Hops hop : ((LcafTrafficEngineeringAddress) lispAddress).getHops()) {
  45                 totalSize += LispAddressSerializer.getInstance().getAddressSize((LispAFIAddress) hop.getHop().getPrimitiveAddress()) + 2;
  46             }
  47         }
  48         return totalSize;
  49     }
  50
  51     @Override
  52     protected void serializeData(ByteBuffer buffer, LispAFIAddress lispAddress) {
  53         if (((LcafTrafficEngineeringAddress) lispAddress).getHops() != null) {
  54             for (Hops hop : ((LcafTrafficEngineeringAddress) lispAddress).getHops()) {
  55                 serializeAFIAddressHeader(buffer, (LispAFIAddress) hop.getHop().getPrimitiveAddress());
  56                 buffer.put((byte) 0);
  57                 buffer.put((byte) (ByteUtil.boolToBit(BooleanUtils.isTrue(hop.isLookup()), Flags.LOOKUP) | //
  58                         ByteUtil.boolToBit(BooleanUtils.isTrue(hop.isRLOCProbe()), Flags.RLOC_PROBE) | //
  59                 ByteUtil.boolToBit(BooleanUtils.isTrue(hop.isStrict()), Flags.STRICT)));
  60                 LispAddressSerializer serializer = LispAFIAddressSerializerFactory.getSerializer(AddressFamilyNumberEnum
  61                         .valueOf(((LispAFIAddress) hop.getHop().getPrimitiveAddress()).getAfi()));
  62                 serializer.serializeData(buffer, (LispAFIAddress) hop.getHop().getPrimitiveAddress());
  63             }
  64         }
  65     }
  66
  67     @Override
  68     protected LcafTrafficEngineeringAddress deserializeData(ByteBuffer buffer, byte res2, short length) {
  69         List<Hops> hops = new ArrayList<Hops>();
  70         while (length > 0) {
  71             short afi = buffer.getShort();
  72             LispAddressSerializer serializer = LispAFIAddressSerializerFactory.getSerializer(AddressFamilyNumberEnum.valueOf(afi));
  73             byte flags = (byte) buffer.getShort();
  74             boolean lookup = ByteUtil.extractBit(flags, Flags.LOOKUP);
  75             boolean RLOCProbe = ByteUtil.extractBit(flags, Flags.RLOC_PROBE);
  76             boolean strict = ByteUtil.extractBit(flags, Flags.STRICT);
  77             LispAFIAddress address = serializer.deserializeData(buffer);
  78             HopsBuilder builder = new HopsBuilder();
  79             builder.setLookup(lookup);
  80             builder.setRLOCProbe(RLOCProbe);
  81             builder.setStrict(strict);
  82             builder.setHop(new HopBuilder().setPrimitiveAddress((PrimitiveAddress) LispAFIConvertor.toPrimitive(address)).build());
  83             length -= LispAddressSerializer.getInstance().getAddressSize((LispAFIAddress) builder.getHop().getPrimitiveAddress()) + 2;
  84             hops.add(builder.build());
  85         }
  86         return new LcafTrafficEngineeringBuilder().setAfi(AddressFamilyNumberEnum.LCAF.getIanaCode())
  87                 .setLcafType((short) LispCanonicalAddressFormatEnum.TRAFFIC_ENGINEERING.getLispCode()).setHops(hops).build();
  88     }
  89
  90     private interface Flags {
  91         int LOOKUP = 0x04;
  92         int RLOC_PROBE = 0x02;
  93         int STRICT = 0x01;
  94     }
  95
  96 }