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.impl.tlv.TlvUtil;
  12 import org.opendaylight.protocol.pcep.spi.PCEPDeserializerException;
  13 import org.opendaylight.protocol.pcep.spi.TlvParser;
  14 import org.opendaylight.protocol.pcep.spi.TlvSerializer;
  15 import org.opendaylight.protocol.util.ByteArray;
  16 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.pcep.ietf.stateful.rev131222.lsp.identifiers.tlv.LspIdentifiers;
  17 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.pcep.ietf.stateful.rev131222.lsp.identifiers.tlv.LspIdentifiersBuilder;
  18 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.pcep.ietf.stateful.rev131222.lsp.identifiers.tlv.lsp.identifiers.AddressFamily;
  19 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.pcep.ietf.stateful.rev131222.lsp.identifiers.tlv.lsp.identifiers.address.family.Ipv6Case;
  20 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.pcep.ietf.stateful.rev131222.lsp.identifiers.tlv.lsp.identifiers.address.family.Ipv6CaseBuilder;
  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.Ipv6;
  22 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;
  23 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.pcep.types.rev131005.Tlv;
  24 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.rsvp.rev130820.Ipv6ExtendedTunnelId;
  25 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.rsvp.rev130820.LspId;
  26 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.rsvp.rev130820.TunnelId;
  27
  28 /**
  29  * Parser for {@link LspIdentifiers}
  30  */
  31 public final class Stateful07LSPIdentifierIpv6TlvParser implements TlvParser, TlvSerializer {
  32
  33         public static final int TYPE = 19;
  34
  35         private static final int IP6_F_LENGTH = 16;
  36         private static final int EX_TUNNEL_ID6_F_LENGTH = 16;
  37
  38         private static final int LSP_ID_F_LENGTH = 2;
  39         private static final int TUNNEL_ID_F_LENGTH = 2;
  40
  41         private static final int V6_LENGTH = 52;
  42
  43         @Override
  44         public LspIdentifiers parseTlv(final byte[] valueBytes) throws PCEPDeserializerException {
  45                 if (valueBytes == null || valueBytes.length == 0) {
  46                         throw new IllegalArgumentException("Value bytes array is mandatory. Can't be null or empty.");
  47                 }
  48                 if (valueBytes.length != V6_LENGTH) {
  49                         throw new IllegalArgumentException("Length " + valueBytes.length + " does not match LSP Identifiers Ipv6 tlv length.");
  50                 }
  51                 int position = 0;
  52                 final Ipv6Builder builder = new Ipv6Builder();
  53                 builder.setIpv6TunnelSenderAddress(Ipv6Util.addressForBytes(ByteArray.subByte(valueBytes, position, IP6_F_LENGTH)));
  54                 position += IP6_F_LENGTH;
  55                 final LspId lspId = new LspId(ByteArray.bytesToLong(ByteArray.subByte(valueBytes, position, LSP_ID_F_LENGTH)));
  56                 position += LSP_ID_F_LENGTH;
  57                 final TunnelId tunnelId = new TunnelId(ByteArray.bytesToInt(ByteArray.subByte(valueBytes, position, TUNNEL_ID_F_LENGTH)));
  58                 position += TUNNEL_ID_F_LENGTH;
  59                 builder.setIpv6ExtendedTunnelId(new Ipv6ExtendedTunnelId(Ipv6Util.addressForBytes(ByteArray.subByte(valueBytes, position,
  60                                 EX_TUNNEL_ID6_F_LENGTH))));
  61                 position += EX_TUNNEL_ID6_F_LENGTH;
  62                 builder.setIpv6TunnelEndpointAddress(Ipv6Util.addressForBytes(ByteArray.subByte(valueBytes, position, IP6_F_LENGTH)));
  63                 final AddressFamily afi = new Ipv6CaseBuilder().setIpv6(builder.build()).build();
  64                 return new LspIdentifiersBuilder().setAddressFamily(afi).setLspId(lspId).setTunnelId(tunnelId).build();
  65         }
  66
  67         @Override
  68         public byte[] serializeTlv(final Tlv tlv) {
  69                 if (tlv == null) {
  70                         throw new IllegalArgumentException("LspIdentifiersTlv is mandatory.");
  71                 }
  72                 final byte[] bytes = new byte[V6_LENGTH];
  73                 int offset = 0;
  74                 final LspIdentifiers lsp = (LspIdentifiers) tlv;
  75                 final Ipv6 ipv6 = ((Ipv6Case) lsp.getAddressFamily()).getIpv6();
  76                 ByteArray.copyWhole(Ipv6Util.bytesForAddress(ipv6.getIpv6TunnelSenderAddress()), bytes, offset);
  77                 offset += IP6_F_LENGTH;
  78                 ByteArray.copyWhole(ByteArray.longToBytes(lsp.getLspId().getValue(), LSP_ID_F_LENGTH), bytes, offset);
  79                 offset += LSP_ID_F_LENGTH;
  80                 ByteArray.copyWhole(ByteArray.intToBytes(lsp.getTunnelId().getValue(), TUNNEL_ID_F_LENGTH), bytes, offset);
  81                 offset += TUNNEL_ID_F_LENGTH;
  82                 ByteArray.copyWhole(Ipv6Util.bytesForAddress(ipv6.getIpv6ExtendedTunnelId()), bytes, offset);
  83                 offset += EX_TUNNEL_ID6_F_LENGTH;
  84                 ByteArray.copyWhole(Ipv6Util.bytesForAddress(ipv6.getIpv6TunnelEndpointAddress()), bytes, offset);
  85                 return TlvUtil.formatTlv(TYPE, bytes);
  86         }
  87
  88         @Override
  89         public int getType() {
  90                 return TYPE;
  91         }
  92 }