pcep/ietf-stateful07/src/main/java/org/opendaylight/protocol/pcep/ietf/stateful07/Stateful07LSPIdentifierIpv6TlvParser.java

   1 /*
   2  * Copyright (c) 2013 Cisco Systems, 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.protocol.pcep.ietf.stateful07;
   9
  10 import org.opendaylight.protocol.concepts.Ipv6Util;
  11 import org.opendaylight.protocol.pcep.spi.PCEPDeserializerException;
  12 import org.opendaylight.protocol.pcep.spi.TlvParser;
  13 import org.opendaylight.protocol.pcep.spi.TlvSerializer;
  14 import org.opendaylight.protocol.util.ByteArray;
  15 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.pcep.ietf.stateful.rev131222.lsp.identifiers.tlv.LspIdentifiers;
  16 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.pcep.ietf.stateful.rev131222.lsp.identifiers.tlv.LspIdentifiersBuilder;
  17 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.pcep.ietf.stateful.rev131222.lsp.identifiers.tlv.lsp.identifiers.AddressFamily;
  18 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.pcep.ietf.stateful.rev131222.lsp.identifiers.tlv.lsp.identifiers.address.family.Ipv6Case;
  19 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.pcep.ietf.stateful.rev131222.lsp.identifiers.tlv.lsp.identifiers.address.family.Ipv6CaseBuilder;
  20 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.pcep.ietf.stateful.rev131222.lsp.identifiers.tlv.lsp.identifiers.address.family.ipv6._case.Ipv6;
  21 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.pcep.ietf.stateful.rev131222.lsp.identifiers.tlv.lsp.identifiers.address.family.ipv6._case.Ipv6Builder;
  22 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.pcep.types.rev131005.Tlv;
  23 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.rsvp.rev130820.Ipv6ExtendedTunnelId;
  24 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.rsvp.rev130820.LspId;
  25 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.rsvp.rev130820.TunnelId;
  26
  27 /**
  28  * Parser for {@link LspIdentifiers}
  29  */
  30 public class Stateful07LSPIdentifierIpv6TlvParser implements TlvParser, TlvSerializer {
  31
  32         public static final int TYPE = 19;
  33
  34         private static final int IP6_F_LENGTH = 16;
  35         private static final int EX_TUNNEL_ID6_F_LENGTH = 16;
  36
  37         private static final int LSP_ID_F_LENGTH = 2;
  38         private static final int TUNNEL_ID_F_LENGTH = 2;
  39
  40         private static final int V6_LENGTH = 52;
  41
  42         @Override
  43         public LspIdentifiers parseTlv(final byte[] valueBytes) throws PCEPDeserializerException {
  44                 if (valueBytes == null || valueBytes.length == 0) {
  45                         throw new IllegalArgumentException("Value bytes array is mandatory. Can't be null or empty.");
  46                 }
  47                 if (valueBytes.length != V6_LENGTH) {
  48                         throw new IllegalArgumentException("Length " + valueBytes.length + " does not match LSP Identifiers Ipv6 tlv length.");
  49                 }
  50                 int position = 0;
  51                 final Ipv6Builder builder = new Ipv6Builder();
  52                 builder.setIpv6TunnelSenderAddress(Ipv6Util.addressForBytes(ByteArray.subByte(valueBytes, position, IP6_F_LENGTH)));
  53                 position += IP6_F_LENGTH;
  54                 final LspId lspId = new LspId(ByteArray.bytesToLong(ByteArray.subByte(valueBytes, position, LSP_ID_F_LENGTH)));
  55                 position += LSP_ID_F_LENGTH;
  56                 final TunnelId tunnelId = new TunnelId(ByteArray.bytesToInt(ByteArray.subByte(valueBytes, position, TUNNEL_ID_F_LENGTH)));
  57                 position += TUNNEL_ID_F_LENGTH;
  58                 builder.setIpv6ExtendedTunnelId(new Ipv6ExtendedTunnelId(Ipv6Util.addressForBytes(ByteArray.subByte(valueBytes, position,
  59                                 EX_TUNNEL_ID6_F_LENGTH))));
  60                 position += EX_TUNNEL_ID6_F_LENGTH;
  61                 builder.setIpv6TunnelEndpointAddress(Ipv6Util.addressForBytes(ByteArray.subByte(valueBytes, position, IP6_F_LENGTH)));
  62                 final AddressFamily afi = new Ipv6CaseBuilder().setIpv6(builder.build()).build();
  63                 return new LspIdentifiersBuilder().setAddressFamily(afi).setLspId(lspId).setTunnelId(tunnelId).build();
  64         }
  65
  66         @Override
  67         public byte[] serializeTlv(final Tlv tlv) {
  68                 if (tlv == null) {
  69                         throw new IllegalArgumentException("LspIdentifiersTlv is mandatory.");
  70                 }
  71                 final byte[] bytes = new byte[V6_LENGTH];
  72                 int offset = 0;
  73                 final LspIdentifiers lsp = (LspIdentifiers) tlv;
  74                 final Ipv6 ipv6 = ((Ipv6Case) lsp.getAddressFamily()).getIpv6();
  75                 ByteArray.copyWhole(Ipv6Util.bytesForAddress(ipv6.getIpv6TunnelSenderAddress()), bytes, offset);
  76                 offset += IP6_F_LENGTH;
  77                 ByteArray.copyWhole(ByteArray.longToBytes(lsp.getLspId().getValue(), LSP_ID_F_LENGTH), bytes, offset);
  78                 offset += LSP_ID_F_LENGTH;
  79                 ByteArray.copyWhole(ByteArray.intToBytes(lsp.getTunnelId().getValue(), TUNNEL_ID_F_LENGTH), bytes, offset);
  80                 offset += TUNNEL_ID_F_LENGTH;
  81                 ByteArray.copyWhole(Ipv6Util.bytesForAddress(ipv6.getIpv6ExtendedTunnelId()), bytes, offset);
  82                 offset += EX_TUNNEL_ID6_F_LENGTH;
  83                 ByteArray.copyWhole(Ipv6Util.bytesForAddress(ipv6.getIpv6TunnelEndpointAddress()), bytes, offset);
  84                 return bytes;
  85         }
  86
  87         @Override
  88         public int getType() {
  89                 return TYPE;
  90         }
  91 }