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