mappingservice/yangmodel/src/main/java/org/opendaylight/lispflowmapping/lisp/serializer/address/LispSegmentLCAFAddressSerializer.java

   1 /*
   2  * Copyright (c) 2014 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.lisp.serializer.address;
   9
  10 import java.nio.ByteBuffer;
  11
  12 import org.opendaylight.lispflowmapping.lisp.serializer.exception.LispSerializationException;
  13 import org.opendaylight.lispflowmapping.lisp.type.AddressFamilyNumberEnum;
  14 import org.opendaylight.lispflowmapping.lisp.type.LispCanonicalAddressFormatEnum;
  15 import org.opendaylight.lispflowmapping.lisp.util.ByteUtil;
  16 import org.opendaylight.lispflowmapping.lisp.util.LispAFIConvertor;
  17 import org.opendaylight.yang.gen.v1.urn.opendaylight.lfm.control.plane.rev150314.LcafSegmentAddress;
  18 import org.opendaylight.yang.gen.v1.urn.opendaylight.lfm.control.plane.rev150314.LispAFIAddress;
  19 import org.opendaylight.yang.gen.v1.urn.opendaylight.lfm.control.plane.rev150314.lcafsegmentaddress.AddressBuilder;
  20 import org.opendaylight.yang.gen.v1.urn.opendaylight.lfm.control.plane.rev150314.lispaddress.lispaddresscontainer.address.lcafsegment.LcafSegmentAddrBuilder;
  21 import org.opendaylight.yang.gen.v1.urn.opendaylight.lfm.control.plane.rev150314.lispsimpleaddress.PrimitiveAddress;
  22
  23 public class LispSegmentLCAFAddressSerializer extends LispLCAFAddressSerializer {
  24
  25     private static final int MAX_INSTANCE_ID = 16777216;
  26     private static final LispSegmentLCAFAddressSerializer INSTANCE = new LispSegmentLCAFAddressSerializer();
  27
  28     // Private constructor prevents instantiation from other classes
  29     private LispSegmentLCAFAddressSerializer() {
  30     }
  31
  32     public static LispSegmentLCAFAddressSerializer getInstance() {
  33         return INSTANCE;
  34     }
  35
  36     @Override
  37     protected short getLcafLength(LispAFIAddress lispAddress) {
  38         return (short) (Length.INSTANCE + LispAddressSerializer.getInstance().getAddressSize(
  39                 LispAFIConvertor.toAFIfromPrimitive(((LcafSegmentAddress) lispAddress).getAddress().getPrimitiveAddress())));
  40     }
  41
  42     @Override
  43     protected void serializeData(ByteBuffer buffer, LispAFIAddress lispAddress) {
  44         // The IID mask-len field is in the LCAF header on the res2 position
  45         buffer.put(buffer.position() - 3, ((LcafSegmentAddress) lispAddress).getIidMaskLength().byteValue());
  46
  47         buffer.putInt(((LcafSegmentAddress) lispAddress).getInstanceId().intValue());
  48         LispAddressSerializer.getInstance().serialize(buffer, LispAFIConvertor.toAFIfromPrimitive(((LcafSegmentAddress) lispAddress).getAddress().getPrimitiveAddress()));
  49     }
  50
  51     @Override
  52     protected LcafSegmentAddress deserializeData(ByteBuffer buffer, byte res2, short length) {
  53         long instanceId = (int) ByteUtil.asUnsignedInteger(buffer.getInt());
  54
  55         if (instanceId > MAX_INSTANCE_ID) {
  56             throw new LispSerializationException("Instance ID is longer than 24 bits. got " + instanceId);
  57         }
  58         LispAFIAddress address = LispAddressSerializer.getInstance().deserialize(buffer);
  59         LcafSegmentAddrBuilder builder = new LcafSegmentAddrBuilder();
  60         builder.setInstanceId(instanceId);
  61         builder.setIidMaskLength((short) res2);
  62         builder.setAfi(AddressFamilyNumberEnum.LCAF.getIanaCode()).setLcafType((short) LispCanonicalAddressFormatEnum.SEGMENT.getLispCode())
  63                 .setAddress(new AddressBuilder().setPrimitiveAddress((PrimitiveAddress) LispAFIConvertor.toPrimitive(address)).build());
  64
  65         return builder.build();
  66     }
  67
  68     private interface Length {
  69         int INSTANCE = 4;
  70     }
  71 }