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 com.google.common.base.Preconditions;
  11
  12 import io.netty.buffer.ByteBuf;
  13 import io.netty.buffer.Unpooled;
  14
  15 import org.opendaylight.protocol.concepts.Ipv6Util;
  16 import org.opendaylight.protocol.pcep.spi.PCEPDeserializerException;
  17 import org.opendaylight.protocol.pcep.spi.TlvParser;
  18 import org.opendaylight.protocol.pcep.spi.TlvSerializer;
  19 import org.opendaylight.protocol.pcep.spi.TlvUtil;
  20 import org.opendaylight.protocol.util.ByteArray;
  21 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.pcep.ietf.stateful.rev131222.lsp.identifiers.tlv.LspIdentifiers;
  22 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.pcep.ietf.stateful.rev131222.lsp.identifiers.tlv.LspIdentifiersBuilder;
  23 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.pcep.ietf.stateful.rev131222.lsp.identifiers.tlv.lsp.identifiers.AddressFamily;
  24 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.pcep.ietf.stateful.rev131222.lsp.identifiers.tlv.lsp.identifiers.address.family.Ipv6Case;
  25 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.pcep.ietf.stateful.rev131222.lsp.identifiers.tlv.lsp.identifiers.address.family.Ipv6CaseBuilder;
  26 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;
  27 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;
  28 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.pcep.types.rev131005.Tlv;
  29 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.rsvp.rev130820.Ipv6ExtendedTunnelId;
  30 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.rsvp.rev130820.LspId;
  31 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.rsvp.rev130820.TunnelId;
  32
  33 /**
  34  * Parser for {@link LspIdentifiers}
  35  */
  36 public final class Stateful07LSPIdentifierIpv6TlvParser implements TlvParser, TlvSerializer {
  37
  38     public static final int TYPE = 19;
  39
  40     private static final int EX_TUNNEL_ID6_F_LENGTH = 16;
  41
  42     private static final int V6_LENGTH = 52;
  43
  44     @Override
  45     public LspIdentifiers parseTlv(final ByteBuf buffer) throws PCEPDeserializerException {
  46         if (buffer == null) {
  47             return null;
  48         }
  49         if (buffer.readableBytes() != V6_LENGTH) {
  50             throw new IllegalArgumentException("Length " + buffer.readableBytes() + " does not match LSP Identifiers Ipv6 tlv length.");
  51         }
  52         final Ipv6Builder builder = new Ipv6Builder();
  53         builder.setIpv6TunnelSenderAddress(Ipv6Util.addressForBytes(ByteArray.readBytes(buffer, Ipv6Util.IPV6_LENGTH)));
  54         final LspId lspId = new LspId((long) buffer.readUnsignedShort());
  55         final TunnelId tunnelId = new TunnelId(buffer.readUnsignedShort());
  56         builder.setIpv6ExtendedTunnelId(new Ipv6ExtendedTunnelId(Ipv6Util.addressForBytes(ByteArray.readBytes(buffer,
  57                 EX_TUNNEL_ID6_F_LENGTH))));
  58         builder.setIpv6TunnelEndpointAddress(Ipv6Util.addressForBytes(ByteArray.readBytes(buffer, Ipv6Util.IPV6_LENGTH)));
  59         final AddressFamily afi = new Ipv6CaseBuilder().setIpv6(builder.build()).build();
  60         return new LspIdentifiersBuilder().setAddressFamily(afi).setLspId(lspId).setTunnelId(tunnelId).build();
  61     }
  62
  63     @Override
  64     public void serializeTlv(final Tlv tlv, final ByteBuf buffer) {
  65         Preconditions.checkArgument(tlv != null, "LspIdentifiersTlv is mandatory.");
  66         final LspIdentifiers lsp = (LspIdentifiers) tlv;
  67         final ByteBuf body = Unpooled.buffer();
  68         final Ipv6 ipv6 = ((Ipv6Case) lsp.getAddressFamily()).getIpv6();
  69         body.writeBytes(Ipv6Util.bytesForAddress(ipv6.getIpv6TunnelSenderAddress()));
  70         body.writeShort(lsp.getLspId().getValue().shortValue());
  71         body.writeShort(lsp.getTunnelId().getValue().shortValue());
  72         body.writeBytes(Ipv6Util.bytesForAddress(ipv6.getIpv6ExtendedTunnelId()));
  73         body.writeBytes(Ipv6Util.bytesForAddress(ipv6.getIpv6TunnelEndpointAddress()));
  74         TlvUtil.formatTlv(TYPE, body, buffer);
  75     }
  76 }