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