mappingservice/lisp-proto/src/main/java/org/opendaylight/lispflowmapping/lisp/serializer/address/Ipv4PrefixBinarySerializer.java

   1 /*
   2  * Copyright (c) 2016 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 com.google.common.net.InetAddresses;
  11 import java.net.InetAddress;
  12 import java.net.UnknownHostException;
  13 import java.nio.ByteBuffer;
  14 import org.opendaylight.lispflowmapping.lisp.serializer.address.Ipv4Serializer.Length;
  15 import org.opendaylight.lispflowmapping.lisp.serializer.exception.LispSerializationException;
  16 import org.opendaylight.lispflowmapping.lisp.util.MaskUtil;
  17 import org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.iana.afn.safi.rev130704.AddressFamily;
  18 import org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.inet.types.rev130715.IpPrefix;
  19 import org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.inet.types.rev130715.Ipv4Prefix;
  20 import org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.lisp.address.types.rev151105.LispAddress;
  21 import org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.lisp.address.types.rev151105.SimpleAddress;
  22 import org.opendaylight.yang.gen.v1.urn.opendaylight.lfm.inet.binary.types.rev160303.Ipv4AddressBinary;
  23 import org.opendaylight.yang.gen.v1.urn.opendaylight.lfm.lisp.binary.address.types.rev160504.Ipv4PrefixBinaryAfi;
  24 import org.opendaylight.yang.gen.v1.urn.opendaylight.lfm.lisp.binary.address.types.rev160504.augmented.lisp.address.address.Ipv4PrefixBinary;
  25 import org.opendaylight.yang.gen.v1.urn.opendaylight.lfm.lisp.binary.address.types.rev160504.augmented.lisp.address.address.Ipv4PrefixBinaryBuilder;
  26 import org.opendaylight.yang.gen.v1.urn.opendaylight.lfm.lisp.proto.rev151105.eid.container.Eid;
  27 import org.opendaylight.yang.gen.v1.urn.opendaylight.lfm.lisp.proto.rev151105.eid.container.EidBuilder;
  28 import org.opendaylight.yang.gen.v1.urn.opendaylight.lfm.lisp.proto.rev151105.rloc.container.Rloc;
  29 import org.opendaylight.yangtools.yang.common.Uint8;
  30 import org.slf4j.Logger;
  31 import org.slf4j.LoggerFactory;
  32
  33 /**
  34  * Class to (de)serialize IPv4 prefixes from/to byte[] representation.
  35  *
  36  * @author Lorand Jakab
  37  */
  38 public final class Ipv4PrefixBinarySerializer extends LispAddressSerializer {
  39
  40     protected static final Logger LOG = LoggerFactory.getLogger(Ipv4PrefixBinarySerializer.class);
  41
  42     private static final Ipv4PrefixBinarySerializer INSTANCE = new Ipv4PrefixBinarySerializer();
  43
  44     // Private constructor prevents instantiation from other classes
  45     private Ipv4PrefixBinarySerializer() {
  46     }
  47
  48     public static Ipv4PrefixBinarySerializer getInstance() {
  49         return INSTANCE;
  50     }
  51
  52     @Override
  53     public int getAddressSize(LispAddress lispAddress) {
  54         // XXX does this need to worry about the mask too?
  55         return Length.IPV4;
  56     }
  57
  58     @Override
  59     public int getAddressSize(SimpleAddress simpleAddress) {
  60         // XXX does this need to worry about the mask too?
  61         return Length.IPV4;
  62     }
  63
  64     @Override
  65     protected short getAfi() {
  66         return (short) AddressFamily.IpV4.getIntValue();
  67     }
  68
  69     @Override
  70     protected void serializeData(ByteBuffer buffer, LispAddress lispAddress) {
  71         Ipv4PrefixBinary prefix = (Ipv4PrefixBinary) lispAddress.getAddress();
  72         buffer.put(prefix.getIpv4AddressBinary().getValue());
  73     }
  74
  75     @Override
  76     protected void serializeData(ByteBuffer buffer, SimpleAddress address) {
  77         buffer.put(InetAddresses.forString(MaskUtil.getAddressStringForIpPrefix(address.getIpPrefix())).getAddress());
  78     }
  79
  80     @Override
  81     protected Eid deserializeEidData(ByteBuffer buffer, LispAddressSerializerContext ctx) {
  82         byte[] ipBuffer = new byte[4];
  83         buffer.get(ipBuffer);
  84         Ipv4PrefixBinary prefix = new Ipv4PrefixBinaryBuilder()
  85                 .setIpv4AddressBinary(new Ipv4AddressBinary(ipBuffer))
  86                         .setIpv4MaskLength(Uint8.valueOf(ctx.getMaskLen()))
  87                         .build();
  88         EidBuilder eb = new EidBuilder();
  89         eb.setAddressType(Ipv4PrefixBinaryAfi.class);
  90         eb.setVirtualNetworkId(getVni(ctx));
  91         eb.setAddress(prefix);
  92         return eb.build();
  93     }
  94
  95     @Override
  96     protected Rloc deserializeRlocData(ByteBuffer buffer) {
  97         throw new LispSerializationException("RLOCs should not be deserialized into prefixes!");
  98     }
  99
 100     @Override
 101     protected SimpleAddress deserializeSimpleAddressData(ByteBuffer buffer, LispAddressSerializerContext ctx) {
 102         byte[] ipBuffer = new byte[4];
 103         InetAddress address = null;
 104         buffer.get(ipBuffer);
 105         try {
 106             address = InetAddress.getByAddress(ipBuffer);
 107         } catch (UnknownHostException e) {
 108             LOG.debug("Unknown host {}", ipBuffer, e);
 109         }
 110         return new SimpleAddress(new IpPrefix(new Ipv4Prefix(address.getHostAddress() + "/" + ctx.getMaskLen())));
 111     }
 112 }