mappingservice/yangmodel/src/main/java/org/opendaylight/lispflowmapping/lisp/serializer/address/LispLCAFAddressSerializer.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.address.factory.LispLCAFAddressSerializerFactory;
  13 import org.opendaylight.lispflowmapping.lisp.serializer.exception.LispSerializationException;
  14 import org.opendaylight.lispflowmapping.lisp.type.LispCanonicalAddressFormatEnum;
  15 import org.opendaylight.lispflowmapping.lisp.util.ByteUtil;
  16 import org.opendaylight.yang.gen.v1.urn.opendaylight.lfm.control.plane.rev150314.LispAFIAddress;
  17 import org.opendaylight.yang.gen.v1.urn.opendaylight.lfm.control.plane.rev150314.LispLcafAddress;
  18
  19 public class LispLCAFAddressSerializer extends LispAddressSerializer {
  20
  21     private static final LispLCAFAddressSerializer INSTANCE = new LispLCAFAddressSerializer();
  22
  23     // Private constructor prevents instantiation from other classes
  24     protected LispLCAFAddressSerializer() {
  25     }
  26
  27     public static LispLCAFAddressSerializer getInstance() {
  28         return INSTANCE;
  29     }
  30
  31     @Override
  32     protected LispLcafAddress deserializeData(ByteBuffer buffer) {
  33         buffer.position(buffer.position() + Length.RES + Length.FLAGS);
  34         byte lispCode = (byte) ByteUtil.getUnsignedByte(buffer);
  35         LispCanonicalAddressFormatEnum lcafType = LispCanonicalAddressFormatEnum.valueOf(lispCode);
  36         byte res2 = buffer.get();
  37         short length = buffer.getShort();
  38
  39         LispLCAFAddressSerializer serializer = LispLCAFAddressSerializerFactory.getLCAFSerializer(lcafType);
  40         if (serializer == null) {
  41             throw new LispSerializationException("Unknown LispLCAFAddress type=" + lispCode);
  42         }
  43         return serializer.deserializeData(buffer, res2, length);
  44     }
  45
  46     protected LispLcafAddress deserializeData(ByteBuffer buffer, byte res2, short length) {
  47         throw new RuntimeException("Not implemented");
  48     }
  49
  50     @Override
  51     public int getAddressSize(LispAFIAddress lispAddress) {
  52         return Length.LCAF_HEADER
  53                 + LispLCAFAddressSerializerFactory.getLCAFSerializer(
  54                         LispCanonicalAddressFormatEnum.valueOf(((LispLcafAddress) lispAddress).getLcafType())).getLcafLength(lispAddress);
  55     }
  56
  57     protected short getLcafLength(LispAFIAddress lispAddress) {
  58         throw new RuntimeException("Not implemented");
  59     }
  60
  61     @Override
  62     protected void serializeData(ByteBuffer buffer, LispAFIAddress lispAddress) {
  63         serializeLCAFAddressHeader(buffer, lispAddress);
  64
  65         LispLCAFAddressSerializer lcafSerializer = LispLCAFAddressSerializerFactory.getLCAFSerializer(LispCanonicalAddressFormatEnum
  66                 .valueOf(((LispLcafAddress) lispAddress).getLcafType()));
  67         lcafSerializer.serializeData(buffer, lispAddress);
  68     }
  69
  70     private void serializeLCAFAddressHeader(ByteBuffer buffer, LispAFIAddress lispAddress) {
  71         LispLcafAddress lispLcafAddress = (LispLcafAddress) lispAddress;
  72         buffer.putShort((short) 0); // RES + Flags.
  73         buffer.put(lispLcafAddress.getLcafType().byteValue());
  74         buffer.put((byte) 0);
  75         LispLCAFAddressSerializer lcafSerializer = LispLCAFAddressSerializerFactory.getLCAFSerializer(LispCanonicalAddressFormatEnum
  76                 .valueOf(lispLcafAddress.getLcafType()));
  77         buffer.putShort(lcafSerializer.getLcafLength(lispAddress));
  78     }
  79
  80     private interface Length {
  81         int RES = 1;
  82         int FLAGS = 1;
  83
  84         int LCAF_HEADER = 6;
  85     }
  86 }