bgp/extensions/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 static com.google.common.base.Verify.verify;
  11
  12 import java.util.ArrayList;
  13 import java.util.Collection;
  14 import java.util.Collections;
  15 import java.util.List;
  16 import org.opendaylight.mdsal.binding.dom.codec.api.BindingNormalizedNodeSerializer;
  17 import org.opendaylight.protocol.bgp.parser.spi.PathIdUtil;
  18 import org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.inet.types.rev130715.Ipv4Prefix;
  19 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.inet.rev180329.bgp.rib.rib.loc.rib.tables.routes.Ipv4RoutesCase;
  20 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.inet.rev180329.ipv4.prefixes.DestinationIpv4;
  21 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.inet.rev180329.ipv4.prefixes.DestinationIpv4Builder;
  22 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.inet.rev180329.ipv4.prefixes.destination.ipv4.Ipv4Prefixes;
  23 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.inet.rev180329.ipv4.prefixes.destination.ipv4.Ipv4PrefixesBuilder;
  24 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.inet.rev180329.ipv4.routes.Ipv4Routes;
  25 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.inet.rev180329.ipv4.routes.Ipv4RoutesBuilder;
  26 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.inet.rev180329.ipv4.routes.ipv4.routes.Ipv4Route;
  27 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.inet.rev180329.ipv4.routes.ipv4.routes.Ipv4RouteBuilder;
  28 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.inet.rev180329.ipv4.routes.ipv4.routes.Ipv4RouteKey;
  29 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.inet.rev180329.update.attributes.mp.reach.nlri.advertized.routes.destination.type.DestinationIpv4CaseBuilder;
  30 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.message.rev200120.Ipv4PrefixAndPathId;
  31 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.message.rev200120.PathId;
  32 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.message.rev200120.path.attributes.Attributes;
  33 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.multiprotocol.rev180329.destination.DestinationType;
  34 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.rib.rev180329.rib.tables.Routes;
  35 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.types.rev200120.Ipv4AddressFamily;
  36 import org.opendaylight.yangtools.yang.data.api.schema.MapEntryNode;
  37 import org.opendaylight.yangtools.yang.data.api.schema.NormalizedNodes;
  38
  39 /**
  40  * Class supporting IPv4 unicast RIBs.
  41  */
  42 final class IPv4RIBSupport extends AbstractIPRibSupport<Ipv4RoutesCase, Ipv4Routes, Ipv4Route, Ipv4RouteKey> {
  43
  44     private static final Ipv4Routes EMPTY_CONTAINER
  45             = new Ipv4RoutesBuilder().setIpv4Route(Collections.emptyList()).build();
  46     private static IPv4RIBSupport SINGLETON = null;
  47
  48     private IPv4RIBSupport(final BindingNormalizedNodeSerializer mappingService) {
  49         super(
  50                 mappingService,
  51                 Ipv4PrefixAndPathId.class,
  52                 Ipv4AddressFamily.class,
  53                 Ipv4RoutesCase.class,
  54                 Ipv4Routes.class,
  55                 Ipv4Route.class,
  56                 DestinationIpv4.QNAME,
  57                 Ipv4Prefixes.QNAME);
  58     }
  59
  60     static synchronized IPv4RIBSupport getInstance(final BindingNormalizedNodeSerializer mappingService) {
  61         if (SINGLETON == null) {
  62             SINGLETON = new IPv4RIBSupport(mappingService);
  63         }
  64         return SINGLETON;
  65     }
  66
  67     private List<Ipv4Prefixes> extractPrefixes(final Collection<MapEntryNode> routes) {
  68         final List<Ipv4Prefixes> prefs = new ArrayList<>(routes.size());
  69         for (final MapEntryNode route : routes) {
  70             final String prefix = (String) NormalizedNodes.findNode(route, routePrefixIdentifier()).get().getValue();
  71             final Ipv4PrefixesBuilder prefixBuilder = new Ipv4PrefixesBuilder().setPrefix(new Ipv4Prefix(prefix));
  72             prefixBuilder.setPathId(PathIdUtil.buildPathId(route, routePathIdNid()));
  73             prefs.add(prefixBuilder.build());
  74         }
  75         return prefs;
  76     }
  77
  78     @Override
  79     protected DestinationType buildDestination(final Collection<MapEntryNode> routes) {
  80         return new DestinationIpv4CaseBuilder().setDestinationIpv4(new DestinationIpv4Builder()
  81                 .setIpv4Prefixes(extractPrefixes(routes)).build()).build();
  82     }
  83
  84     @Override
  85     protected DestinationType buildWithdrawnDestination(final Collection<MapEntryNode> routes) {
  86         return new org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.inet.rev180329.update
  87                 .attributes.mp.unreach.nlri.withdrawn.routes.destination.type.DestinationIpv4CaseBuilder()
  88                 .setDestinationIpv4(new DestinationIpv4Builder().setIpv4Prefixes(extractPrefixes(routes))
  89                         .build()).build();
  90     }
  91
  92     @Override
  93     public Ipv4Route createRoute(final Ipv4Route route, final Ipv4RouteKey key, final Attributes attributes) {
  94         final Ipv4RouteBuilder builder;
  95         if (route != null) {
  96             builder = new Ipv4RouteBuilder(route);
  97         } else {
  98             builder = new Ipv4RouteBuilder();
  99         }
 100         builder.withKey(key).setAttributes(attributes);
 101         return builder.build();
 102     }
 103
 104     @Override
 105     public Ipv4Routes emptyRoutesContainer() {
 106         return EMPTY_CONTAINER;
 107     }
 108
 109     @Override
 110     public Ipv4RouteKey createRouteListKey(final PathId pathId, final String routeKey) {
 111         return new Ipv4RouteKey(pathId, routeKey);
 112     }
 113
 114     @Override
 115     public PathId extractPathId(final Ipv4RouteKey routeListKey) {
 116         return routeListKey.getPathId();
 117     }
 118
 119     @Override
 120     public String extractRouteKey(final Ipv4RouteKey routeListKey) {
 121         return routeListKey.getRouteKey();
 122     }
 123
 124     @Override
 125     public List<Ipv4Route> extractAdjRibInRoutes(final Routes routes) {
 126         verify(routes instanceof org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.inet.rev180329
 127             .bgp.rib.rib.peer.adj.rib.in.tables.routes.Ipv4RoutesCase, "Unrecognized routes %s", routes);
 128         return ((org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.inet.rev180329.bgp.rib.rib.peer
 129                 .adj.rib.in.tables.routes.Ipv4RoutesCase) routes).getIpv4Routes().nonnullIpv4Route();
 130     }
 131 }