bgp/extensions/linkstate/src/main/java/org/opendaylight/protocol/bgp/linkstate/impl/nlri/LinkNlriParser.java

   1 /*
   2  * Copyright (c) 2014 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.linkstate.impl.nlri;
   9
  10 import com.google.common.annotations.VisibleForTesting;
  11 import io.netty.buffer.ByteBuf;
  12 import java.util.Map;
  13 import org.opendaylight.protocol.bgp.linkstate.impl.tlvs.Ipv4InterfaceTlvParser;
  14 import org.opendaylight.protocol.bgp.linkstate.impl.tlvs.Ipv4NeighborTlvParser;
  15 import org.opendaylight.protocol.bgp.linkstate.impl.tlvs.Ipv6InterfaceTlvParser;
  16 import org.opendaylight.protocol.bgp.linkstate.impl.tlvs.Ipv6NeighborTlvParser;
  17 import org.opendaylight.protocol.bgp.linkstate.impl.tlvs.MultiTopoIdTlvParser;
  18 import org.opendaylight.protocol.bgp.linkstate.spi.AbstractNlriTypeCodec;
  19 import org.opendaylight.protocol.bgp.linkstate.spi.TlvUtil;
  20 import org.opendaylight.protocol.bgp.linkstate.spi.pojo.SimpleNlriTypeRegistry;
  21 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.linkstate.rev180329.Ipv4InterfaceIdentifier;
  22 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.linkstate.rev180329.Ipv6InterfaceIdentifier;
  23 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.linkstate.rev180329.LinkLrIdentifiers;
  24 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.linkstate.rev180329.NlriType;
  25 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.linkstate.rev180329.TopologyIdentifier;
  26 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.linkstate.rev180329.linkstate.ObjectType;
  27 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.linkstate.rev180329.linkstate.object.type.LinkCase;
  28 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.linkstate.rev180329.linkstate.object.type.LinkCaseBuilder;
  29 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.linkstate.rev180329.linkstate.object.type.link._case.LinkDescriptors;
  30 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.linkstate.rev180329.linkstate.object.type.link._case.LinkDescriptorsBuilder;
  31 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.linkstate.rev180329.linkstate.object.type.link._case.LocalNodeDescriptors;
  32 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.linkstate.rev180329.linkstate.object.type.link._case.RemoteNodeDescriptors;
  33 import org.opendaylight.yangtools.yang.common.QName;
  34 import org.opendaylight.yangtools.yang.data.api.YangInstanceIdentifier.NodeIdentifier;
  35 import org.opendaylight.yangtools.yang.data.api.schema.ContainerNode;
  36
  37 public final class LinkNlriParser extends AbstractNlriTypeCodec {
  38
  39     /* Link Descriptor QNames */
  40     @VisibleForTesting
  41     public static final NodeIdentifier IPV4_IFACE_NID = NodeIdentifier.create(
  42         Ipv4InterfaceTlvParser.IPV4_IFACE_ADDRESS_QNAME);
  43     @VisibleForTesting
  44     public static final NodeIdentifier IPV4_NEIGHBOR_NID = NodeIdentifier.create(
  45         Ipv4NeighborTlvParser.IPV4_NEIGHBOR_ADDRESS_QNAME);
  46     @VisibleForTesting
  47     public static final NodeIdentifier LINK_LOCAL_NID = NodeIdentifier.create(
  48         QName.create(LinkDescriptors.QNAME, "link-local-identifier").intern());
  49     @VisibleForTesting
  50     public static final NodeIdentifier LINK_REMOTE_NID = NodeIdentifier.create(
  51         QName.create(LinkDescriptors.QNAME, "link-remote-identifier").intern());
  52     private static final NodeIdentifier IPV6_IFACE_NID = NodeIdentifier.create(
  53         Ipv6InterfaceTlvParser.IPV6_IFACE_ADDRESS_QNAME);
  54     private static final NodeIdentifier IPV6_NEIGHBOR_NID = NodeIdentifier.create(
  55         Ipv6NeighborTlvParser.IPV6_NEIGHBOR_ADDRESS_QNAME);
  56
  57     @FunctionalInterface
  58     private interface SerializerInterface {
  59         void check(Object cont);
  60     }
  61
  62     static LinkDescriptors serializeLinkDescriptors(final ContainerNode descriptors) {
  63         final LinkDescriptorsBuilder linkDescBuilder = new LinkDescriptorsBuilder();
  64
  65         if (descriptors.getChild(LINK_LOCAL_NID).isPresent() && descriptors.getChild(LINK_REMOTE_NID).isPresent()) {
  66             linkDescBuilder.setLinkLocalIdentifier((Long) descriptors.getChild(LINK_LOCAL_NID).get().getValue());
  67             linkDescBuilder.setLinkRemoteIdentifier((Long) descriptors.getChild(LINK_REMOTE_NID).get().getValue());
  68         }
  69         ifPresentApply(descriptors, IPV4_IFACE_NID,
  70             value -> linkDescBuilder.setIpv4InterfaceAddress(new Ipv4InterfaceIdentifier((String) value)));
  71         ifPresentApply(descriptors, IPV6_IFACE_NID,
  72             value -> linkDescBuilder.setIpv6InterfaceAddress(new Ipv6InterfaceIdentifier((String) value)));
  73         ifPresentApply(descriptors, IPV4_NEIGHBOR_NID,
  74             value -> linkDescBuilder.setIpv4NeighborAddress(new Ipv4InterfaceIdentifier((String) value)));
  75         ifPresentApply(descriptors, IPV6_NEIGHBOR_NID,
  76             value -> linkDescBuilder.setIpv6NeighborAddress(new Ipv6InterfaceIdentifier((String) value)));
  77         ifPresentApply(descriptors, TlvUtil.MULTI_TOPOLOGY_NID,
  78             value -> linkDescBuilder.setMultiTopologyId(new TopologyIdentifier((Integer) value)));
  79         return linkDescBuilder.build();
  80     }
  81
  82     private static void ifPresentApply(final ContainerNode descriptors, final NodeIdentifier nid,
  83             final SerializerInterface serializer) {
  84         if (descriptors.getChild(nid).isPresent()) {
  85             serializer.check(descriptors.getChild(nid).get().getValue());
  86         }
  87     }
  88
  89     private static LinkDescriptors parseLinkDescriptor(final ByteBuf buffer) {
  90         final Map<QName, Object> tlvs = SimpleNlriTypeRegistry.getInstance().parseSubTlvs(buffer);
  91         final LinkDescriptorsBuilder builder = new LinkDescriptorsBuilder();
  92
  93         final LinkLrIdentifiers linkIdentifiers = (LinkLrIdentifiers) tlvs.get(LinkLrIdentifiers.QNAME);
  94         if (linkIdentifiers != null) {
  95             builder.setLinkLocalIdentifier(linkIdentifiers.getLinkLocalIdentifier());
  96             builder.setLinkRemoteIdentifier(linkIdentifiers.getLinkRemoteIdentifier());
  97         }
  98         builder.setIpv4InterfaceAddress(
  99             (Ipv4InterfaceIdentifier) tlvs.get(Ipv4InterfaceTlvParser.IPV4_IFACE_ADDRESS_QNAME));
 100         builder.setIpv4NeighborAddress(
 101             (Ipv4InterfaceIdentifier) tlvs.get(Ipv4NeighborTlvParser.IPV4_NEIGHBOR_ADDRESS_QNAME));
 102         builder.setIpv6InterfaceAddress(
 103             (Ipv6InterfaceIdentifier) tlvs.get(Ipv6InterfaceTlvParser.IPV6_IFACE_ADDRESS_QNAME));
 104         builder.setIpv6NeighborAddress(
 105             (Ipv6InterfaceIdentifier) tlvs.get(Ipv6NeighborTlvParser.IPV6_NEIGHBOR_ADDRESS_QNAME));
 106         builder.setMultiTopologyId((TopologyIdentifier) tlvs.get(MultiTopoIdTlvParser.MULTI_TOPOLOGY_ID_QNAME));
 107
 108         return builder.build();
 109     }
 110
 111     @Override
 112     protected ObjectType parseObjectType(final ByteBuf buffer) {
 113         final SimpleNlriTypeRegistry reg = SimpleNlriTypeRegistry.getInstance();
 114         final LocalNodeDescriptors localDescriptor = reg.parseTlv(buffer);
 115         final RemoteNodeDescriptors remoteDescriptor = reg.parseTlv(buffer);
 116         final LinkDescriptors linkDescriptor = parseLinkDescriptor(buffer);
 117         return new LinkCaseBuilder()
 118             .setLinkDescriptors(linkDescriptor)
 119             .setLocalNodeDescriptors(localDescriptor)
 120             .setRemoteNodeDescriptors(remoteDescriptor)
 121             .build();
 122     }
 123
 124     @Override
 125     protected void serializeObjectType(final ObjectType objectType, final ByteBuf buffer) {
 126         final LinkCase linkNlri = (LinkCase) objectType;
 127         final SimpleNlriTypeRegistry reg = SimpleNlriTypeRegistry.getInstance();
 128         reg.serializeTlv(LocalNodeDescriptors.QNAME, linkNlri.getLocalNodeDescriptors(), buffer);
 129         reg.serializeTlv(RemoteNodeDescriptors.QNAME, linkNlri.getRemoteNodeDescriptors(), buffer);
 130         serializeLinkDescriptor(linkNlri.getLinkDescriptors(), buffer);
 131     }
 132
 133     private static void serializeLinkDescriptor(final LinkDescriptors linkDescriptor, final ByteBuf body) {
 134         final SimpleNlriTypeRegistry reg = SimpleNlriTypeRegistry.getInstance();
 135         if (linkDescriptor.getLinkLocalIdentifier() != null && linkDescriptor.getLinkRemoteIdentifier() != null) {
 136             reg.serializeTlv(LinkLrIdentifiers.QNAME, linkDescriptor, body);
 137         }
 138         reg.serializeTlv(Ipv4InterfaceTlvParser.IPV4_IFACE_ADDRESS_QNAME, linkDescriptor.getIpv4InterfaceAddress(),
 139             body);
 140         reg.serializeTlv(Ipv4NeighborTlvParser.IPV4_NEIGHBOR_ADDRESS_QNAME, linkDescriptor.getIpv4NeighborAddress(),
 141             body);
 142         reg.serializeTlv(Ipv6InterfaceTlvParser.IPV6_IFACE_ADDRESS_QNAME, linkDescriptor.getIpv6InterfaceAddress(),
 143             body);
 144         reg.serializeTlv(Ipv6NeighborTlvParser.IPV6_NEIGHBOR_ADDRESS_QNAME, linkDescriptor.getIpv6NeighborAddress(),
 145             body);
 146         reg.serializeTlv(MultiTopoIdTlvParser.MULTI_TOPOLOGY_ID_QNAME, linkDescriptor.getMultiTopologyId(), body);
 147     }
 148
 149     @Override
 150     public int getNlriType() {
 151         return NlriType.Link.getIntValue();
 152     }
 153 }