pcep/ietf-stateful07/src/main/java/org/opendaylight/protocol/pcep/ietf/stateful07/Stateful07LSPIdentifierIpv4TlvParser.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 com.google.common.base.Preconditions.checkArgument;
  11 import static org.opendaylight.protocol.util.ByteBufWriteUtil.writeIpv4Address;
  12
  13 import io.netty.buffer.ByteBuf;
  14 import io.netty.buffer.Unpooled;
  15 import org.opendaylight.protocol.pcep.spi.PCEPDeserializerException;
  16 import org.opendaylight.protocol.pcep.spi.TlvParser;
  17 import org.opendaylight.protocol.pcep.spi.TlvSerializer;
  18 import org.opendaylight.protocol.pcep.spi.TlvUtil;
  19 import org.opendaylight.protocol.util.Ipv4Util;
  20 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.pcep.ietf.stateful.rev181109.lsp.identifiers.tlv.LspIdentifiers;
  21 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.pcep.ietf.stateful.rev181109.lsp.identifiers.tlv.LspIdentifiersBuilder;
  22 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.pcep.ietf.stateful.rev181109.lsp.identifiers.tlv.lsp.identifiers.AddressFamily;
  23 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.pcep.ietf.stateful.rev181109.lsp.identifiers.tlv.lsp.identifiers.address.family.Ipv4Case;
  24 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.pcep.ietf.stateful.rev181109.lsp.identifiers.tlv.lsp.identifiers.address.family.Ipv4CaseBuilder;
  25 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.pcep.ietf.stateful.rev181109.lsp.identifiers.tlv.lsp.identifiers.address.family.Ipv6Case;
  26 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.pcep.ietf.stateful.rev181109.lsp.identifiers.tlv.lsp.identifiers.address.family.ipv4._case.Ipv4;
  27 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.pcep.ietf.stateful.rev181109.lsp.identifiers.tlv.lsp.identifiers.address.family.ipv4._case.Ipv4Builder;
  28 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.pcep.types.rev181109.Tlv;
  29 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.rsvp.rev150820.Ipv4ExtendedTunnelId;
  30 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.rsvp.rev150820.LspId;
  31 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.rsvp.rev150820.TunnelId;
  32 import org.opendaylight.yangtools.yang.common.Uint32;
  33 import org.opendaylight.yangtools.yang.common.netty.ByteBufUtils;
  34
  35 /**
  36  * Parser for {@link LspIdentifiers}.
  37  */
  38 public final class Stateful07LSPIdentifierIpv4TlvParser implements TlvParser, TlvSerializer {
  39     public static final int TYPE = 18;
  40
  41     private static final int V4_LENGTH = 16;
  42
  43     @Override
  44     public LspIdentifiers parseTlv(final ByteBuf buffer) throws PCEPDeserializerException {
  45         if (buffer == null) {
  46             return null;
  47         }
  48         checkArgument(buffer.readableBytes() == V4_LENGTH, "Length %s does not match LSP Identifiers Ipv4 tlv length.",
  49                 buffer.readableBytes());
  50         final Ipv4Builder builder = new Ipv4Builder()
  51                 .setIpv4TunnelSenderAddress(Ipv4Util.noZoneAddressForByteBuf(buffer));
  52         final LspId lspId = new LspId(Uint32.valueOf(buffer.readUnsignedShort()));
  53         final TunnelId tunnelId = new TunnelId(ByteBufUtils.readUint16(buffer));
  54         builder.setIpv4ExtendedTunnelId(new Ipv4ExtendedTunnelId(Ipv4Util.noZoneAddressForByteBuf(buffer)));
  55         builder.setIpv4TunnelEndpointAddress(Ipv4Util.noZoneAddressForByteBuf(buffer));
  56         final AddressFamily afi = new Ipv4CaseBuilder().setIpv4(builder.build()).build();
  57         return new LspIdentifiersBuilder()
  58                 .setAddressFamily(afi)
  59                 .setLspId(lspId)
  60                 .setTunnelId(tunnelId)
  61                 .build();
  62     }
  63
  64     @Override
  65     public void serializeTlv(final Tlv tlv, final ByteBuf buffer) {
  66         checkArgument(tlv instanceof LspIdentifiers, "LspIdentifiersTlv is mandatory.");
  67         final LspIdentifiers lsp = (LspIdentifiers) tlv;
  68         final AddressFamily afi = lsp.getAddressFamily();
  69         final ByteBuf body = Unpooled.buffer();
  70         if (afi.implementedInterface().equals(Ipv6Case.class)) {
  71             new Stateful07LSPIdentifierIpv6TlvParser().serializeTlv(tlv, buffer);
  72         }
  73         final Ipv4 ipv4 = ((Ipv4Case) afi).getIpv4();
  74         checkArgument(ipv4.getIpv4TunnelSenderAddress() != null, "Ipv4TunnelSenderAddress is mandatory.");
  75         writeIpv4Address(ipv4.getIpv4TunnelSenderAddress(), body);
  76         checkArgument(lsp.getLspId() != null, "LspId is mandatory.");
  77         body.writeShort(lsp.getLspId().getValue().shortValue());
  78         final TunnelId tunnelId = lsp.getTunnelId();
  79         checkArgument(tunnelId != null, "TunnelId is mandatory.");
  80         ByteBufUtils.write(body, tunnelId.getValue());
  81         checkArgument(ipv4.getIpv4ExtendedTunnelId() != null, "Ipv4ExtendedTunnelId is mandatory.");
  82         writeIpv4Address(ipv4.getIpv4ExtendedTunnelId(), body);
  83         checkArgument(ipv4.getIpv4TunnelEndpointAddress() != null, "Ipv4TunnelEndpointAddress is mandatory.");
  84         writeIpv4Address(ipv4.getIpv4TunnelEndpointAddress(), body);
  85         TlvUtil.formatTlv(TYPE, body, buffer);
  86     }
  87 }