mappingservice/lisp-proto/src/main/java/org/opendaylight/lispflowmapping/lisp/serializer/address/Ipv4PrefixSerializer.java

   1 /*
   2  * Copyright (c) 2015 Cisco Systems, Inc.  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.net.Inet4Address;
  11 import java.net.InetAddress;
  12 import java.net.UnknownHostException;
  13 import java.nio.ByteBuffer;
  14
  15 import org.opendaylight.lispflowmapping.lisp.serializer.address.Ipv4Serializer.Length;
  16 import org.opendaylight.lispflowmapping.lisp.serializer.exception.LispSerializationException;
  17 import org.opendaylight.lispflowmapping.lisp.util.MaskUtil;
  18 import org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.iana.afn.safi.rev130704.AddressFamily;
  19 import org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.inet.types.rev100924.IpPrefix;
  20 import org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.lisp.address.types.rev151105.Ipv4PrefixAfi;
  21 import org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.lisp.address.types.rev151105.LispAddress;
  22 import org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.lisp.address.types.rev151105.SimpleAddress;
  23 import org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.lisp.address.types.rev151105.lisp.address.address.Ipv4Prefix;
  24 import org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.lisp.address.types.rev151105.lisp.address.address.Ipv4PrefixBuilder;
  25 import org.opendaylight.yang.gen.v1.urn.opendaylight.lfm.lisp.proto.rev151105.eid.container.Eid;
  26 import org.opendaylight.yang.gen.v1.urn.opendaylight.lfm.lisp.proto.rev151105.eid.container.EidBuilder;
  27 import org.opendaylight.yang.gen.v1.urn.opendaylight.lfm.lisp.proto.rev151105.rloc.container.Rloc;
  28 import org.slf4j.Logger;
  29 import org.slf4j.LoggerFactory;
  30
  31 /**
  32  * @author Lorand Jakab
  33  *
  34  */
  35 public final class Ipv4PrefixSerializer extends LispAddressSerializer {
  36
  37     protected static final Logger LOG = LoggerFactory.getLogger(Ipv4PrefixSerializer.class);
  38
  39     private static final Ipv4PrefixSerializer INSTANCE = new Ipv4PrefixSerializer();
  40
  41     // Private constructor prevents instantiation from other classes
  42     private Ipv4PrefixSerializer() {
  43     }
  44
  45     public static Ipv4PrefixSerializer getInstance() {
  46         return INSTANCE;
  47     }
  48
  49     @Override
  50     public int getAddressSize(LispAddress lispAddress) {
  51         return Length.IPV4; // XXX does this need to worry about the mask too?
  52     }
  53
  54     @Override
  55     public int getAddressSize(SimpleAddress simpleAddress) {
  56         return Length.IPV4; // XXX does this need to worry about the mask too?
  57     }
  58
  59     @Override
  60     protected short getAfi() {
  61         return (short) AddressFamily.IpV4.getIntValue();
  62     }
  63
  64     @Override
  65     protected void serializeData(ByteBuffer buffer, LispAddress lispAddress) {
  66         Ipv4Prefix prefix = (Ipv4Prefix) lispAddress.getAddress();
  67         String address = MaskUtil.getAddressStringForIpv4Prefix(prefix);
  68         try {
  69             buffer.put(Inet4Address.getByName(address).getAddress());
  70         } catch (UnknownHostException e) {
  71             LOG.debug("Unknown host {}", address, e);
  72         }
  73     }
  74
  75     @Override
  76     protected void serializeData(ByteBuffer buffer, SimpleAddress address) {
  77         try {
  78             buffer.put(Inet4Address.getByName(MaskUtil.getAddressStringForIpPrefix(address.getIpPrefix())).getAddress());
  79         } catch (UnknownHostException e) {
  80         }
  81     }
  82
  83     @Override
  84     protected Eid deserializeEidData(ByteBuffer buffer, LispAddressSerializerContext ctx) {
  85         EidBuilder eb = new EidBuilder();
  86         eb.setAddressType(Ipv4PrefixAfi.class);
  87         eb.setVirtualNetworkId(getVni(ctx));
  88         eb.setAddress(new Ipv4PrefixBuilder().setIpv4Prefix(deserializeData(buffer, ctx)).build());
  89         return eb.build();
  90     }
  91
  92     @Override
  93     protected Rloc deserializeRlocData(ByteBuffer buffer) {
  94         throw new LispSerializationException("RLOCs should not be deserialized into prefixes!");
  95     }
  96
  97     @Override
  98     protected SimpleAddress deserializeSimpleAddressData(ByteBuffer buffer, LispAddressSerializerContext ctx) {
  99         return new SimpleAddress(new IpPrefix(deserializeData(buffer, ctx)));
 100     }
 101
 102     private org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.inet.types.rev100924.Ipv4Prefix
 103     deserializeData(ByteBuffer buffer, LispAddressSerializerContext ctx) {
 104         byte[] ipBuffer = new byte[4];
 105         InetAddress address = null;
 106         buffer.get(ipBuffer);
 107         try {
 108             address = InetAddress.getByAddress(ipBuffer);
 109         } catch (UnknownHostException e) {
 110             LOG.debug("Unknown host {}", ipBuffer, e);
 111         }
 112         return new org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.inet.types.rev100924.Ipv4Prefix(
 113                 address.getHostAddress() + "/" + ctx.getMaskLen());
 114     }
 115 }