mappingservice/implementation/src/main/java/org/opendaylight/lispflowmapping/implementation/serializer/address/LispAddressSerializer.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.implementation.serializer.address;
   9
  10 import java.nio.ByteBuffer;
  11
  12 import org.opendaylight.lispflowmapping.implementation.lisp.exception.LispSerializationException;
  13 import org.opendaylight.lispflowmapping.implementation.serializer.address.factory.LispAFIAddressSerializerFactory;
  14 import org.opendaylight.lispflowmapping.type.AddressFamilyNumberEnum;
  15 import org.opendaylight.yang.gen.v1.urn.opendaylight.lfm.control.plane.rev150314.LispAFIAddress;
  16
  17 public class LispAddressSerializer {
  18
  19     private static final LispAddressSerializer INSTANCE = new LispAddressSerializer();
  20
  21     // Private constructor prevents instantiation from other classes
  22     protected LispAddressSerializer() {
  23     }
  24
  25     public static LispAddressSerializer getInstance() {
  26         return INSTANCE;
  27     }
  28
  29     protected void serializeData(ByteBuffer buffer, LispAFIAddress lispAddress) {
  30         throw new RuntimeException("UnImplemented");
  31     }
  32
  33     protected LispAFIAddress deserializeData(ByteBuffer buffer) {
  34         throw new RuntimeException("UnImplemented");
  35     }
  36
  37     public void serialize(ByteBuffer buffer, LispAFIAddress lispAddress) {
  38         LispAddressSerializer serializer = LispAFIAddressSerializerFactory.getSerializer(AddressFamilyNumberEnum.valueOf(lispAddress.getAfi()));
  39         if (serializer == null) {
  40             throw new LispSerializationException("Unknown AFI type=" + lispAddress.getAfi());
  41         }
  42         serializeAFIAddressHeader(buffer, lispAddress);
  43         serializer.serializeData(buffer, lispAddress);
  44     }
  45
  46     protected static void serializeAFIAddressHeader(ByteBuffer buffer, LispAFIAddress lispAddress) {
  47         buffer.putShort(lispAddress.getAfi());
  48     }
  49
  50     public int getAddressSize(LispAFIAddress lispAddress) {
  51         AddressFamilyNumberEnum afiType = AddressFamilyNumberEnum.valueOf(lispAddress.getAfi());
  52         LispAddressSerializer serializer = LispAFIAddressSerializerFactory.getSerializer(afiType);
  53         if (serializer == null) {
  54             throw new LispSerializationException("Unknown AFI type=" + afiType);
  55         }
  56         return Length.AFI + serializer.getAddressSize(lispAddress);
  57     }
  58
  59     public LispAFIAddress deserialize(ByteBuffer buffer) {
  60         short afi = buffer.getShort();
  61         AddressFamilyNumberEnum afiType = AddressFamilyNumberEnum.valueOf(afi);
  62         LispAddressSerializer serializer = LispAFIAddressSerializerFactory.getSerializer(afiType);
  63         if (serializer == null) {
  64             throw new LispSerializationException("Unknown AFI type=" + afiType);
  65         }
  66         try {
  67             return serializer.deserializeData(buffer);
  68         } catch (RuntimeException e) {
  69             throw new LispSerializationException("Problem deserializing AFI=" + afiType, e);
  70         }
  71     }
  72
  73     private interface Length {
  74         int AFI = 2;
  75     }
  76
  77 }