pcep/ietf-stateful/src/main/java/org/opendaylight/protocol/pcep/ietf/stateful/StatefulLSPIdentifierIpv6TlvParser.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.stateful;
   9
  10 import static com.google.common.base.Preconditions.checkArgument;
  11
  12 import io.netty.buffer.ByteBuf;
  13 import io.netty.buffer.Unpooled;
  14 import org.opendaylight.protocol.pcep.PCEPDeserializerException;
  15 import org.opendaylight.protocol.pcep.spi.TlvParser;
  16 import org.opendaylight.protocol.pcep.spi.TlvSerializer;
  17 import org.opendaylight.protocol.pcep.spi.TlvUtil;
  18 import org.opendaylight.protocol.util.Ipv6Util;
  19 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.pcep.ietf.stateful.rev200720.lsp.identifiers.tlv.LspIdentifiers;
  20 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.pcep.ietf.stateful.rev200720.lsp.identifiers.tlv.LspIdentifiersBuilder;
  21 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.pcep.ietf.stateful.rev200720.lsp.identifiers.tlv.lsp.identifiers.AddressFamily;
  22 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.pcep.ietf.stateful.rev200720.lsp.identifiers.tlv.lsp.identifiers.address.family.Ipv6Case;
  23 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.pcep.ietf.stateful.rev200720.lsp.identifiers.tlv.lsp.identifiers.address.family.Ipv6CaseBuilder;
  24 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.pcep.ietf.stateful.rev200720.lsp.identifiers.tlv.lsp.identifiers.address.family.ipv6._case.Ipv6;
  25 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.pcep.ietf.stateful.rev200720.lsp.identifiers.tlv.lsp.identifiers.address.family.ipv6._case.Ipv6Builder;
  26 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.pcep.types.rev181109.Tlv;
  27 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.rsvp.rev150820.Ipv6ExtendedTunnelId;
  28 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.rsvp.rev150820.LspId;
  29 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.rsvp.rev150820.TunnelId;
  30 import org.opendaylight.yangtools.yang.common.Uint32;
  31 import org.opendaylight.yangtools.yang.common.netty.ByteBufUtils;
  32
  33 /**
  34  * Parser for {@link LspIdentifiers}.
  35  */
  36 public final class StatefulLSPIdentifierIpv6TlvParser implements TlvParser, TlvSerializer {
  37     public static final int TYPE = 19;
  38
  39     private static final int V6_LENGTH = 52;
  40
  41     @Override
  42     public LspIdentifiers parseTlv(final ByteBuf buffer) throws PCEPDeserializerException {
  43         if (buffer == null) {
  44             return null;
  45         }
  46         checkArgument(buffer.readableBytes() == V6_LENGTH, "Length %s does not match LSP Identifiers Ipv6 tlv length.",
  47                 buffer.readableBytes());
  48         final Ipv6Builder builder = new Ipv6Builder();
  49         builder.setIpv6TunnelSenderAddress(Ipv6Util.addressForByteBuf(buffer));
  50         final LspId lspId = new LspId(Uint32.valueOf(buffer.readUnsignedShort()));
  51         final TunnelId tunnelId = new TunnelId(ByteBufUtils.readUint16(buffer));
  52         builder.setIpv6ExtendedTunnelId(new Ipv6ExtendedTunnelId(Ipv6Util.addressForByteBuf(buffer)));
  53         builder.setIpv6TunnelEndpointAddress(Ipv6Util.addressForByteBuf(buffer));
  54         final AddressFamily afi = new Ipv6CaseBuilder().setIpv6(builder.build()).build();
  55         return new LspIdentifiersBuilder().setAddressFamily(afi).setLspId(lspId).setTunnelId(tunnelId).build();
  56     }
  57
  58     @Override
  59     public void serializeTlv(final Tlv tlv, final ByteBuf buffer) {
  60         checkArgument(tlv instanceof LspIdentifiers, "LspIdentifiersTlv is mandatory.");
  61         final LspIdentifiers lsp = (LspIdentifiers) tlv;
  62         final ByteBuf body = Unpooled.buffer();
  63         final Ipv6 ipv6 = ((Ipv6Case) lsp.getAddressFamily()).getIpv6();
  64         checkArgument(ipv6.getIpv6TunnelSenderAddress() != null, "Ipv6TunnelSenderAddress is mandatory.");
  65         Ipv6Util.writeIpv6Address(ipv6.getIpv6TunnelSenderAddress(), body);
  66
  67         final LspId lspId = lsp.getLspId();
  68         checkArgument(lspId != null, "LspId is mandatory.");
  69         body.writeShort(lspId.getValue().shortValue());
  70         final TunnelId tunnelId = lsp.getTunnelId();
  71         checkArgument(tunnelId != null, "TunnelId is mandatory.");
  72         ByteBufUtils.write(body, tunnelId.getValue());
  73         checkArgument(ipv6.getIpv6ExtendedTunnelId() != null, "Ipv6ExtendedTunnelId is mandatory.");
  74         Ipv6Util.writeIpv6Address(ipv6.getIpv6ExtendedTunnelId(), body);
  75         checkArgument(ipv6.getIpv6TunnelEndpointAddress() != null, "Ipv6TunnelEndpointAddress is mandatory.");
  76         Ipv6Util.writeIpv6Address(ipv6.getIpv6TunnelEndpointAddress(), body);
  77         TlvUtil.formatTlv(TYPE, body, buffer);
  78     }
  79 }