bgp/inet/src/main/java/org/opendaylight/protocol/bgp/inet/IPv4RIBSupport.java

   1 /*
   2  * Copyright (c) 2015 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.inet;
   9
  10 import java.util.ArrayList;
  11 import java.util.Collection;
  12 import java.util.Collections;
  13 import java.util.List;
  14 import javax.annotation.Nonnull;
  15 import org.opendaylight.protocol.bgp.parser.spi.PathIdUtil;
  16 import org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.inet.types.rev130715.Ipv4Prefix;
  17 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.inet.rev171207.bgp.rib.rib.loc.rib.tables.routes.Ipv4RoutesCase;
  18 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.inet.rev171207.ipv4.prefixes.DestinationIpv4;
  19 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.inet.rev171207.ipv4.prefixes.DestinationIpv4Builder;
  20 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.inet.rev171207.ipv4.prefixes.destination.ipv4.Ipv4Prefixes;
  21 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.inet.rev171207.ipv4.prefixes.destination.ipv4.Ipv4PrefixesBuilder;
  22 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.inet.rev171207.ipv4.routes.Ipv4Routes;
  23 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.inet.rev171207.ipv4.routes.ipv4.routes.Ipv4Route;
  24 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.inet.rev171207.ipv4.routes.ipv4.routes.Ipv4RouteBuilder;
  25 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.inet.rev171207.ipv4.routes.ipv4.routes.Ipv4RouteKey;
  26 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.inet.rev171207.update.attributes.mp.reach.nlri.advertized.routes.destination.type.DestinationIpv4CaseBuilder;
  27 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.message.rev171207.Ipv4PrefixAndPathId;
  28 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.message.rev171207.PathId;
  29 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.message.rev171207.path.attributes.Attributes;
  30 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.multiprotocol.rev171207.destination.DestinationType;
  31 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.types.rev130919.Ipv4AddressFamily;
  32 import org.opendaylight.yangtools.yang.data.api.schema.MapEntryNode;
  33 import org.opendaylight.yangtools.yang.data.api.schema.NormalizedNodes;
  34
  35 /**
  36  * Class supporting IPv4 unicast RIBs.
  37  */
  38 final class IPv4RIBSupport extends AbstractIPRibSupport<org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns
  39         .yang.bgp.inet.rev171207.bgp.rib.rib.peer.adj.rib.in.tables.routes.Ipv4RoutesCase,
  40         Ipv4Route, Ipv4RouteKey> {
  41
  42     private static final IPv4RIBSupport SINGLETON = new IPv4RIBSupport();
  43
  44     private IPv4RIBSupport() {
  45         super(Ipv4PrefixAndPathId.class, Ipv4AddressFamily.class,
  46                 Ipv4RoutesCase.class, Ipv4Routes.class, Ipv4Route.class, DestinationIpv4.QNAME, Ipv4Prefixes.QNAME);
  47     }
  48
  49     static IPv4RIBSupport getInstance() {
  50         return SINGLETON;
  51     }
  52
  53     private List<Ipv4Prefixes> extractPrefixes(final Collection<MapEntryNode> routes) {
  54         final List<Ipv4Prefixes> prefs = new ArrayList<>(routes.size());
  55         for (final MapEntryNode route : routes) {
  56             final String prefix = (String) NormalizedNodes.findNode(route, routePrefixIdentifier()).get().getValue();
  57             final Ipv4PrefixesBuilder prefixBuilder = new Ipv4PrefixesBuilder().setPrefix(new Ipv4Prefix(prefix));
  58             prefixBuilder.setPathId(PathIdUtil.buildPathId(route, routePathIdNid()));
  59             prefs.add(prefixBuilder.build());
  60         }
  61         return prefs;
  62     }
  63
  64     @Nonnull
  65     @Override
  66     protected DestinationType buildDestination(@Nonnull final Collection<MapEntryNode> routes) {
  67         return new DestinationIpv4CaseBuilder().setDestinationIpv4(new DestinationIpv4Builder()
  68                 .setIpv4Prefixes(extractPrefixes(routes)).build()).build();
  69     }
  70
  71     @Nonnull
  72     @Override
  73     protected DestinationType buildWithdrawnDestination(@Nonnull final Collection<MapEntryNode> routes) {
  74         return new org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.inet.rev171207.update
  75                 .attributes.mp.unreach.nlri.withdrawn.routes.destination.type.DestinationIpv4CaseBuilder()
  76                 .setDestinationIpv4(new DestinationIpv4Builder().setIpv4Prefixes(extractPrefixes(routes))
  77                         .build()).build();
  78     }
  79
  80     @Override
  81     public Ipv4RouteKey extractRouteKey(final Ipv4Route route) {
  82         return route.getKey();
  83     }
  84
  85     @Override
  86     public Ipv4Route createRoute(final Ipv4Route route, final Ipv4RouteKey routeKey, final PathId pathId,
  87             final Attributes attributes) {
  88         final Ipv4RouteBuilder builder;
  89         if (route != null) {
  90             builder = new Ipv4RouteBuilder(route);
  91         } else {
  92             builder = new Ipv4RouteBuilder();
  93         }
  94         return builder.setPrefix(routeKey.getPrefix()).setPathId(pathId).setAttributes(attributes).build();
  95     }
  96
  97     @Override
  98     public Collection<Ipv4Route> changedRoutes(final org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang
  99             .bgp.inet.rev171207.bgp.rib.rib.peer.adj.rib.in.tables.routes.Ipv4RoutesCase routes) {
 100         final Ipv4Routes routeCont = routes.getIpv4Routes();
 101         if (routeCont == null) {
 102             return Collections.emptyList();
 103         }
 104         return routeCont.getIpv4Route();
 105     }
 106
 107     @Override
 108     public Ipv4RouteKey createNewRouteKey(final PathId pathId, final Ipv4RouteKey routeKey) {
 109         return new Ipv4RouteKey(pathId, routeKey.getPrefix());
 110     }
 111 }