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.common.Uint32;
  35 import org.opendaylight.yangtools.yang.data.api.YangInstanceIdentifier.NodeIdentifier;
  36 import org.opendaylight.yangtools.yang.data.api.schema.ContainerNode;
  37
  38 public final class LinkNlriParser extends AbstractNlriTypeCodec {
  39
  40     /* Link Descriptor QNames */
  41     @VisibleForTesting
  42     public static final NodeIdentifier IPV4_IFACE_NID = NodeIdentifier.create(
  43         Ipv4InterfaceTlvParser.IPV4_IFACE_ADDRESS_QNAME);
  44     @VisibleForTesting
  45     public static final NodeIdentifier IPV4_NEIGHBOR_NID = NodeIdentifier.create(
  46         Ipv4NeighborTlvParser.IPV4_NEIGHBOR_ADDRESS_QNAME);
  47     @VisibleForTesting
  48     public static final NodeIdentifier LINK_LOCAL_NID = NodeIdentifier.create(
  49         QName.create(LinkDescriptors.QNAME, "link-local-identifier").intern());
  50     @VisibleForTesting
  51     public static final NodeIdentifier LINK_REMOTE_NID = NodeIdentifier.create(
  52         QName.create(LinkDescriptors.QNAME, "link-remote-identifier").intern());
  53     private static final NodeIdentifier IPV6_IFACE_NID = NodeIdentifier.create(
  54         Ipv6InterfaceTlvParser.IPV6_IFACE_ADDRESS_QNAME);
  55     private static final NodeIdentifier IPV6_NEIGHBOR_NID = NodeIdentifier.create(
  56         Ipv6NeighborTlvParser.IPV6_NEIGHBOR_ADDRESS_QNAME);
  57
  58     @FunctionalInterface
  59     private interface SerializerInterface {
  60         void check(Object cont);
  61     }
  62
  63     static LinkDescriptors serializeLinkDescriptors(final ContainerNode descriptors) {
  64         final LinkDescriptorsBuilder linkDescBuilder = new LinkDescriptorsBuilder();
  65
  66         if (descriptors.getChild(LINK_LOCAL_NID).isPresent() && descriptors.getChild(LINK_REMOTE_NID).isPresent()) {
  67             linkDescBuilder.setLinkLocalIdentifier((Uint32) descriptors.getChild(LINK_LOCAL_NID).get().getValue());
  68             linkDescBuilder.setLinkRemoteIdentifier((Uint32) descriptors.getChild(LINK_REMOTE_NID).get().getValue());
  69         }
  70         ifPresentApply(descriptors, IPV4_IFACE_NID,
  71             value -> linkDescBuilder.setIpv4InterfaceAddress(new Ipv4InterfaceIdentifier((String) value)));
  72         ifPresentApply(descriptors, IPV6_IFACE_NID,
  73             value -> linkDescBuilder.setIpv6InterfaceAddress(new Ipv6InterfaceIdentifier((String) value)));
  74         ifPresentApply(descriptors, IPV4_NEIGHBOR_NID,
  75             value -> linkDescBuilder.setIpv4NeighborAddress(new Ipv4InterfaceIdentifier((String) value)));
  76         ifPresentApply(descriptors, IPV6_NEIGHBOR_NID,
  77             value -> linkDescBuilder.setIpv6NeighborAddress(new Ipv6InterfaceIdentifier((String) value)));
  78         ifPresentApply(descriptors, TlvUtil.MULTI_TOPOLOGY_NID,
  79             value -> linkDescBuilder.setMultiTopologyId(new TopologyIdentifier((Integer) value)));
  80         return linkDescBuilder.build();
  81     }
  82
  83     private static void ifPresentApply(final ContainerNode descriptors, final NodeIdentifier nid,
  84             final SerializerInterface serializer) {
  85         if (descriptors.getChild(nid).isPresent()) {
  86             serializer.check(descriptors.getChild(nid).get().getValue());
  87         }
  88     }
  89
  90     private static LinkDescriptors parseLinkDescriptor(final ByteBuf buffer) {
  91         final Map<QName, Object> tlvs = SimpleNlriTypeRegistry.getInstance().parseSubTlvs(buffer);
  92         final LinkDescriptorsBuilder builder = new LinkDescriptorsBuilder();
  93
  94         final LinkLrIdentifiers linkIdentifiers = (LinkLrIdentifiers) tlvs.get(LinkLrIdentifiers.QNAME);
  95         if (linkIdentifiers != null) {
  96             builder.setLinkLocalIdentifier(linkIdentifiers.getLinkLocalIdentifier());
  97             builder.setLinkRemoteIdentifier(linkIdentifiers.getLinkRemoteIdentifier());
  98         }
  99         builder.setIpv4InterfaceAddress(
 100             (Ipv4InterfaceIdentifier) tlvs.get(Ipv4InterfaceTlvParser.IPV4_IFACE_ADDRESS_QNAME));
 101         builder.setIpv4NeighborAddress(
 102             (Ipv4InterfaceIdentifier) tlvs.get(Ipv4NeighborTlvParser.IPV4_NEIGHBOR_ADDRESS_QNAME));
 103         builder.setIpv6InterfaceAddress(
 104             (Ipv6InterfaceIdentifier) tlvs.get(Ipv6InterfaceTlvParser.IPV6_IFACE_ADDRESS_QNAME));
 105         builder.setIpv6NeighborAddress(
 106             (Ipv6InterfaceIdentifier) tlvs.get(Ipv6NeighborTlvParser.IPV6_NEIGHBOR_ADDRESS_QNAME));
 107         builder.setMultiTopologyId((TopologyIdentifier) tlvs.get(MultiTopoIdTlvParser.MULTI_TOPOLOGY_ID_QNAME));
 108
 109         return builder.build();
 110     }
 111
 112     @Override
 113     protected ObjectType parseObjectType(final ByteBuf buffer) {
 114         final SimpleNlriTypeRegistry reg = SimpleNlriTypeRegistry.getInstance();
 115         final LocalNodeDescriptors localDescriptor = reg.parseTlv(buffer);
 116         final RemoteNodeDescriptors remoteDescriptor = reg.parseTlv(buffer);
 117         final LinkDescriptors linkDescriptor = parseLinkDescriptor(buffer);
 118         return new LinkCaseBuilder()
 119             .setLinkDescriptors(linkDescriptor)
 120             .setLocalNodeDescriptors(localDescriptor)
 121             .setRemoteNodeDescriptors(remoteDescriptor)
 122             .build();
 123     }
 124
 125     @Override
 126     protected void serializeObjectType(final ObjectType objectType, final ByteBuf buffer) {
 127         final LinkCase linkNlri = (LinkCase) objectType;
 128         final SimpleNlriTypeRegistry reg = SimpleNlriTypeRegistry.getInstance();
 129         reg.serializeTlv(LocalNodeDescriptors.QNAME, linkNlri.getLocalNodeDescriptors(), buffer);
 130         reg.serializeTlv(RemoteNodeDescriptors.QNAME, linkNlri.getRemoteNodeDescriptors(), buffer);
 131         serializeLinkDescriptor(linkNlri.getLinkDescriptors(), buffer);
 132     }
 133
 134     private static void serializeLinkDescriptor(final LinkDescriptors linkDescriptor, final ByteBuf body) {
 135         final SimpleNlriTypeRegistry reg = SimpleNlriTypeRegistry.getInstance();
 136         if (linkDescriptor.getLinkLocalIdentifier() != null && linkDescriptor.getLinkRemoteIdentifier() != null) {
 137             reg.serializeTlv(LinkLrIdentifiers.QNAME, linkDescriptor, body);
 138         }
 139         reg.serializeTlv(Ipv4InterfaceTlvParser.IPV4_IFACE_ADDRESS_QNAME, linkDescriptor.getIpv4InterfaceAddress(),
 140             body);
 141         reg.serializeTlv(Ipv4NeighborTlvParser.IPV4_NEIGHBOR_ADDRESS_QNAME, linkDescriptor.getIpv4NeighborAddress(),
 142             body);
 143         reg.serializeTlv(Ipv6InterfaceTlvParser.IPV6_IFACE_ADDRESS_QNAME, linkDescriptor.getIpv6InterfaceAddress(),
 144             body);
 145         reg.serializeTlv(Ipv6NeighborTlvParser.IPV6_NEIGHBOR_ADDRESS_QNAME, linkDescriptor.getIpv6NeighborAddress(),
 146             body);
 147         reg.serializeTlv(MultiTopoIdTlvParser.MULTI_TOPOLOGY_ID_QNAME, linkDescriptor.getMultiTopologyId(), body);
 148     }
 149
 150     @Override
 151     public int getNlriType() {
 152         return NlriType.Link.getIntValue();
 153     }
 154 }