bgp/extensions/mvpn/src/main/java/org/opendaylight/protocol/bgp/mvpn/impl/attributes/tunnel/identifier/MldpP2mpLspParser.java

   1 /*
   2  * Copyright (c) 2016 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.bgp.mvpn.impl.attributes.tunnel.identifier;
   9
  10 import static org.opendaylight.protocol.bgp.mvpn.impl.attributes.OpaqueUtil.serializeOpaqueList;
  11 import static org.opendaylight.protocol.bgp.mvpn.impl.attributes.tunnel.identifier.PAddressPMulticastGroupUtil.parseIpAddress;
  12 import static org.opendaylight.protocol.bgp.mvpn.impl.attributes.tunnel.identifier.PAddressPMulticastGroupUtil.serializeIpAddress;
  13 import static org.opendaylight.protocol.bgp.mvpn.spi.pojo.attributes.tunnel.identifier.SimpleTunnelIdentifierRegistry.NO_TUNNEL_INFORMATION_PRESENT;
  14
  15 import io.netty.buffer.ByteBuf;
  16 import io.netty.buffer.ByteBufUtil;
  17 import io.netty.buffer.Unpooled;
  18 import org.opendaylight.protocol.bgp.mvpn.impl.attributes.OpaqueUtil;
  19 import org.opendaylight.protocol.bgp.mvpn.spi.attributes.tunnel.identifier.AbstractTunnelIdentifier;
  20 import org.opendaylight.protocol.bgp.parser.spi.AddressFamilyRegistry;
  21 import org.opendaylight.protocol.util.Ipv4Util;
  22 import org.opendaylight.protocol.util.Ipv6Util;
  23 import org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.inet.types.rev130715.IpAddress;
  24 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.types.rev180329.AddressFamily;
  25 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.pmsi.tunnel.rev180329.PmsiTunnelType;
  26 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.pmsi.tunnel.rev180329.pmsi.tunnel.pmsi.tunnel.TunnelIdentifier;
  27 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.pmsi.tunnel.rev180329.pmsi.tunnel.pmsi.tunnel.tunnel.identifier.MldpP2mpLsp;
  28 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.pmsi.tunnel.rev180329.pmsi.tunnel.pmsi.tunnel.tunnel.identifier.MldpP2mpLspBuilder;
  29 import org.slf4j.Logger;
  30 import org.slf4j.LoggerFactory;
  31
  32 public final class MldpP2mpLspParser extends AbstractTunnelIdentifier<MldpP2mpLsp> {
  33     private static final Logger LOG = LoggerFactory.getLogger(MldpP2mpLspParser.class);
  34     private static final short P2MP_TYPE = 6;
  35     private static final int RESERVED = 1;
  36     private final AddressFamilyRegistry addressFamilyRegistry;
  37
  38     public MldpP2mpLspParser(final AddressFamilyRegistry addressFamilyRegistry) {
  39         this.addressFamilyRegistry = addressFamilyRegistry;
  40     }
  41
  42     @Override
  43     public int serialize(final MldpP2mpLsp tunnelIdentifier, final ByteBuf buffer) {
  44         final org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.pmsi.tunnel.rev180329.pmsi.tunnel.pmsi
  45                 .tunnel.tunnel.identifier.mldp.p2mp.lsp.MldpP2mpLsp mldpP2mpLsp = tunnelIdentifier.getMldpP2mpLsp();
  46
  47         final ByteBuf opaqueValues = Unpooled.buffer();
  48         final int addressFamily = getAddressFamilyValue(mldpP2mpLsp.getAddressFamily());
  49
  50         if (!serializeOpaqueList(mldpP2mpLsp.getOpaqueValue(), opaqueValues) || addressFamily == 0) {
  51             return NO_TUNNEL_INFORMATION_PRESENT;
  52         }
  53         final IpAddress rootNode = mldpP2mpLsp.getRootNodeAddress();
  54         buffer.writeByte(P2MP_TYPE);
  55         buffer.writeShort(addressFamily);
  56         buffer.writeByte(rootNode.getIpv4Address() != null ? Ipv4Util.IP4_LENGTH : Ipv6Util.IPV6_LENGTH);
  57         serializeIpAddress(rootNode, buffer);
  58
  59         buffer.writeShort(opaqueValues.readableBytes());
  60         buffer.writeBytes(opaqueValues);
  61         return getType();
  62     }
  63
  64     @Override
  65     public Class<? extends TunnelIdentifier> getClazz() {
  66         return MldpP2mpLsp.class;
  67     }
  68
  69     @Override
  70     public int getType() {
  71         return PmsiTunnelType.MldpP2mpLsp.getIntValue();
  72     }
  73
  74     private int getAddressFamilyValue(final Class<? extends AddressFamily> addressFamily) {
  75         final Integer type = this.addressFamilyRegistry.numberForClass(addressFamily);
  76         return type == null ? 0 : type;
  77     }
  78
  79     @Override
  80     public MldpP2mpLsp parse(final ByteBuf buffer) {
  81         final org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.pmsi.tunnel.rev180329.pmsi.tunnel.pmsi
  82                 .tunnel.tunnel.identifier.mldp.p2mp.lsp.MldpP2mpLspBuilder mldpP2mpLsp =
  83                 new org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.pmsi.tunnel.rev180329.pmsi.tunnel
  84                         .pmsi.tunnel.tunnel.identifier.mldp.p2mp.lsp.MldpP2mpLspBuilder();
  85         buffer.skipBytes(RESERVED);
  86         final Class<? extends AddressFamily> addressFamily = this.addressFamilyRegistry
  87                 .classForFamily(buffer.readUnsignedShort());
  88         if (addressFamily == null) {
  89             LOG.debug("Skipping serialization of TunnelIdentifier {}, address family type  supported",
  90                     ByteBufUtil.hexDump(buffer));
  91             return null;
  92         }
  93         mldpP2mpLsp.setAddressFamily(addressFamily);
  94         final short rootNodeLength = buffer.readUnsignedByte();
  95         mldpP2mpLsp.setRootNodeAddress(parseIpAddress(rootNodeLength, buffer.readBytes(rootNodeLength)));
  96         final int opaqueValueLength = buffer.readUnsignedShort();
  97         mldpP2mpLsp.setOpaqueValue(OpaqueUtil.parseOpaqueList(buffer.readBytes(opaqueValueLength)));
  98         return new MldpP2mpLspBuilder().setMldpP2mpLsp(mldpP2mpLsp.build()).build();
  99     }
 100 }