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 static org.opendaylight.protocol.util.ByteBufWriteUtil.writeIpv6Address;
  11 import static org.opendaylight.protocol.util.ByteBufWriteUtil.writeShort;
  12 import static org.opendaylight.protocol.util.ByteBufWriteUtil.writeUnsignedShort;
  13
  14 import com.google.common.base.Preconditions;
  15 import io.netty.buffer.ByteBuf;
  16 import io.netty.buffer.Unpooled;
  17 import org.opendaylight.protocol.pcep.spi.PCEPDeserializerException;
  18 import org.opendaylight.protocol.pcep.spi.TlvParser;
  19 import org.opendaylight.protocol.pcep.spi.TlvSerializer;
  20 import org.opendaylight.protocol.pcep.spi.TlvUtil;
  21 import org.opendaylight.protocol.util.ByteArray;
  22 import org.opendaylight.protocol.util.Ipv6Util;
  23 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.pcep.ietf.stateful.rev131222.lsp.identifiers.tlv.LspIdentifiers;
  24 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.pcep.ietf.stateful.rev131222.lsp.identifiers.tlv.LspIdentifiersBuilder;
  25 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.pcep.ietf.stateful.rev131222.lsp.identifiers.tlv.lsp.identifiers.AddressFamily;
  26 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.pcep.ietf.stateful.rev131222.lsp.identifiers.tlv.lsp.identifiers.address.family.Ipv6Case;
  27 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.pcep.ietf.stateful.rev131222.lsp.identifiers.tlv.lsp.identifiers.address.family.Ipv6CaseBuilder;
  28 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;
  29 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;
  30 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.pcep.types.rev131005.Tlv;
  31 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.rsvp.rev130820.Ipv6ExtendedTunnelId;
  32 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.rsvp.rev130820.LspId;
  33 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.rsvp.rev130820.TunnelId;
  34
  35 /**
  36  * Parser for {@link LspIdentifiers}
  37  */
  38 public final class Stateful07LSPIdentifierIpv6TlvParser implements TlvParser, TlvSerializer {
  39
  40     public static final int TYPE = 19;
  41
  42     private static final int EX_TUNNEL_ID6_F_LENGTH = 16;
  43
  44     private static final int V6_LENGTH = 52;
  45
  46     @Override
  47     public LspIdentifiers parseTlv(final ByteBuf buffer) throws PCEPDeserializerException {
  48         if (buffer == null) {
  49             return null;
  50         }
  51         if (buffer.readableBytes() != V6_LENGTH) {
  52             throw new IllegalArgumentException("Length " + buffer.readableBytes() + " does not match LSP Identifiers Ipv6 tlv length.");
  53         }
  54         final Ipv6Builder builder = new Ipv6Builder();
  55         builder.setIpv6TunnelSenderAddress(Ipv6Util.addressForBytes(ByteArray.readBytes(buffer, Ipv6Util.IPV6_LENGTH)));
  56         final LspId lspId = new LspId((long) buffer.readUnsignedShort());
  57         final TunnelId tunnelId = new TunnelId(buffer.readUnsignedShort());
  58         builder.setIpv6ExtendedTunnelId(new Ipv6ExtendedTunnelId(Ipv6Util.addressForBytes(ByteArray.readBytes(buffer,
  59                 EX_TUNNEL_ID6_F_LENGTH))));
  60         builder.setIpv6TunnelEndpointAddress(Ipv6Util.addressForBytes(ByteArray.readBytes(buffer, Ipv6Util.IPV6_LENGTH)));
  61         final AddressFamily afi = new Ipv6CaseBuilder().setIpv6(builder.build()).build();
  62         return new LspIdentifiersBuilder().setAddressFamily(afi).setLspId(lspId).setTunnelId(tunnelId).build();
  63     }
  64
  65     @Override
  66     public void serializeTlv(final Tlv tlv, final ByteBuf buffer) {
  67         Preconditions.checkArgument(tlv != null && tlv instanceof LspIdentifiers, "LspIdentifiersTlv is mandatory.");
  68         final LspIdentifiers lsp = (LspIdentifiers) tlv;
  69         final ByteBuf body = Unpooled.buffer();
  70         final Ipv6 ipv6 = ((Ipv6Case) lsp.getAddressFamily()).getIpv6();
  71         Preconditions.checkArgument(ipv6.getIpv6TunnelSenderAddress() != null, "Ipv6TunnelSenderAddress is mandatory.");
  72         writeIpv6Address(ipv6.getIpv6TunnelSenderAddress(), body);
  73         Preconditions.checkArgument(lsp.getLspId() != null, "LspId is mandatory.");
  74         writeShort(lsp.getLspId().getValue().shortValue(), body);
  75         Preconditions.checkArgument(lsp.getTunnelId() != null, "TunnelId is mandatory.");
  76         writeUnsignedShort(lsp.getTunnelId().getValue(), body);
  77         Preconditions.checkArgument(ipv6.getIpv6ExtendedTunnelId() != null, "Ipv6ExtendedTunnelId is mandatory.");
  78         writeIpv6Address(ipv6.getIpv6ExtendedTunnelId(), body);
  79         Preconditions.checkArgument(ipv6.getIpv6TunnelEndpointAddress() != null, "Ipv6TunnelEndpointAddress is mandatory.");
  80         writeIpv6Address(ipv6.getIpv6TunnelEndpointAddress(), body);
  81         TlvUtil.formatTlv(TYPE, body, buffer);
  82     }
  83 }