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 com.google.common.net.InetAddresses;
  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.rev130715.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  * Class to (de)serialize IPv4 prefixes from/to String representation.
  33  *
  34  * @author Lorand Jakab
  35  *
  36  */
  37 public final class Ipv4PrefixSerializer extends LispAddressSerializer {
  38
  39     protected static final Logger LOG = LoggerFactory.getLogger(Ipv4PrefixSerializer.class);
  40
  41     private static final Ipv4PrefixSerializer INSTANCE = new Ipv4PrefixSerializer();
  42
  43     // Private constructor prevents instantiation from other classes
  44     private Ipv4PrefixSerializer() {
  45     }
  46
  47     public static Ipv4PrefixSerializer getInstance() {
  48         return INSTANCE;
  49     }
  50
  51     @Override
  52     public int getAddressSize(LispAddress lispAddress) {
  53         // XXX does this need to worry about the mask too?
  54         return Length.IPV4;
  55     }
  56
  57     @Override
  58     public int getAddressSize(SimpleAddress simpleAddress) {
  59         // XXX does this need to worry about the mask too?
  60         return Length.IPV4;
  61     }
  62
  63     @Override
  64     protected short getAfi() {
  65         return (short) AddressFamily.IpV4.getIntValue();
  66     }
  67
  68     @Override
  69     protected void serializeData(ByteBuffer buffer, LispAddress lispAddress) {
  70         Ipv4Prefix prefix = (Ipv4Prefix) lispAddress.getAddress();
  71         String address = MaskUtil.getAddressStringForIpv4Prefix(prefix);
  72         buffer.put(InetAddresses.forString(address).getAddress());
  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         EidBuilder eb = new EidBuilder();
  83         eb.setAddressType(Ipv4PrefixAfi.class);
  84         eb.setVirtualNetworkId(getVni(ctx));
  85         eb.setAddress(new Ipv4PrefixBuilder().setIpv4Prefix(deserializeData(buffer, ctx)).build());
  86         return eb.build();
  87     }
  88
  89     @Override
  90     protected Rloc deserializeRlocData(ByteBuffer buffer) {
  91         throw new LispSerializationException("RLOCs should not be deserialized into prefixes!");
  92     }
  93
  94     @Override
  95     protected SimpleAddress deserializeSimpleAddressData(ByteBuffer buffer, LispAddressSerializerContext ctx) {
  96         return new SimpleAddress(new IpPrefix(deserializeData(buffer, ctx)));
  97     }
  98
  99     private static org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.inet.types.rev130715.Ipv4Prefix
 100             deserializeData(ByteBuffer buffer, LispAddressSerializerContext ctx) {
 101         byte[] ipBuffer = new byte[4];
 102         InetAddress address = null;
 103         buffer.get(ipBuffer);
 104         try {
 105             address = InetAddress.getByAddress(ipBuffer);
 106         } catch (UnknownHostException e) {
 107             LOG.debug("Unknown host {}", ipBuffer, e);
 108         }
 109         return new org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.inet.types.rev130715.Ipv4Prefix(
 110                 address.getHostAddress() + "/" + ctx.getMaskLen());
 111     }
 112 }