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