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.bgp.rib.rib.loc.rib.tables.routes.Ipv4RoutesCaseBuilder;
  21 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.inet.rev180329.ipv4.prefixes.DestinationIpv4;
  22 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.inet.rev180329.ipv4.prefixes.DestinationIpv4Builder;
  23 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.inet.rev180329.ipv4.prefixes.destination.ipv4.Ipv4Prefixes;
  24 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.inet.rev180329.ipv4.prefixes.destination.ipv4.Ipv4PrefixesBuilder;
  25 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.inet.rev180329.ipv4.routes.Ipv4Routes;
  26 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.inet.rev180329.ipv4.routes.Ipv4RoutesBuilder;
  27 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.inet.rev180329.ipv4.routes.ipv4.routes.Ipv4Route;
  28 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.inet.rev180329.ipv4.routes.ipv4.routes.Ipv4RouteBuilder;
  29 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.inet.rev180329.ipv4.routes.ipv4.routes.Ipv4RouteKey;
  30 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;
  31 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.message.rev180329.Ipv4PrefixAndPathId;
  32 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.message.rev180329.PathId;
  33 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.message.rev180329.path.attributes.Attributes;
  34 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.multiprotocol.rev180329.destination.DestinationType;
  35 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.rib.rev180329.rib.tables.Routes;
  36 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.types.rev180329.Ipv4AddressFamily;
  37 import org.opendaylight.yangtools.yang.data.api.schema.MapEntryNode;
  38 import org.opendaylight.yangtools.yang.data.api.schema.NormalizedNodes;
  39
  40 /**
  41  * Class supporting IPv4 unicast RIBs.
  42  */
  43 final class IPv4RIBSupport extends AbstractIPRibSupport<Ipv4RoutesCase, Ipv4Routes, Ipv4Route, Ipv4RouteKey> {
  44
  45     private static final Ipv4Routes EMPTY_CONTAINER
  46             = new Ipv4RoutesBuilder().setIpv4Route(Collections.emptyList()).build();
  47     private static final Ipv4RoutesCase EMPTY_CASE = new Ipv4RoutesCaseBuilder().setIpv4Routes(EMPTY_CONTAINER).build();
  48     private static IPv4RIBSupport SINGLETON = null;
  49
  50     private IPv4RIBSupport(final BindingNormalizedNodeSerializer mappingService) {
  51         super(
  52                 mappingService,
  53                 Ipv4PrefixAndPathId.class,
  54                 Ipv4AddressFamily.class,
  55                 Ipv4RoutesCase.class,
  56                 Ipv4Routes.class,
  57                 Ipv4Route.class,
  58                 DestinationIpv4.QNAME,
  59                 Ipv4Prefixes.QNAME);
  60     }
  61
  62     static synchronized IPv4RIBSupport getInstance(final BindingNormalizedNodeSerializer mappingService) {
  63         if (SINGLETON == null) {
  64             SINGLETON = new IPv4RIBSupport(mappingService);
  65         }
  66         return SINGLETON;
  67     }
  68
  69     private List<Ipv4Prefixes> extractPrefixes(final Collection<MapEntryNode> routes) {
  70         final List<Ipv4Prefixes> prefs = new ArrayList<>(routes.size());
  71         for (final MapEntryNode route : routes) {
  72             final String prefix = (String) NormalizedNodes.findNode(route, routePrefixIdentifier()).get().getValue();
  73             final Ipv4PrefixesBuilder prefixBuilder = new Ipv4PrefixesBuilder().setPrefix(new Ipv4Prefix(prefix));
  74             prefixBuilder.setPathId(PathIdUtil.buildPathId(route, routePathIdNid()));
  75             prefs.add(prefixBuilder.build());
  76         }
  77         return prefs;
  78     }
  79
  80     @Override
  81     protected DestinationType buildDestination(final Collection<MapEntryNode> routes) {
  82         return new DestinationIpv4CaseBuilder().setDestinationIpv4(new DestinationIpv4Builder()
  83                 .setIpv4Prefixes(extractPrefixes(routes)).build()).build();
  84     }
  85
  86     @Override
  87     protected DestinationType buildWithdrawnDestination(final Collection<MapEntryNode> routes) {
  88         return new org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.inet.rev180329.update
  89                 .attributes.mp.unreach.nlri.withdrawn.routes.destination.type.DestinationIpv4CaseBuilder()
  90                 .setDestinationIpv4(new DestinationIpv4Builder().setIpv4Prefixes(extractPrefixes(routes))
  91                         .build()).build();
  92     }
  93
  94     @Override
  95     public Ipv4Route createRoute(final Ipv4Route route, final Ipv4RouteKey key, final Attributes attributes) {
  96         final Ipv4RouteBuilder builder;
  97         if (route != null) {
  98             builder = new Ipv4RouteBuilder(route);
  99         } else {
 100             builder = new Ipv4RouteBuilder();
 101         }
 102         builder.withKey(key).setAttributes(attributes);
 103         return builder.build();
 104     }
 105
 106     @Override
 107     public Ipv4RoutesCase emptyRoutesCase() {
 108         return EMPTY_CASE;
 109     }
 110
 111     @Override
 112     public Ipv4Routes emptyRoutesContainer() {
 113         return EMPTY_CONTAINER;
 114     }
 115
 116     @Override
 117     public Ipv4RouteKey createRouteListKey(final PathId pathId, final String routeKey) {
 118         return new Ipv4RouteKey(pathId, routeKey);
 119     }
 120
 121     @Override
 122     public PathId extractPathId(final Ipv4RouteKey routeListKey) {
 123         return routeListKey.getPathId();
 124     }
 125
 126     @Override
 127     public String extractRouteKey(final Ipv4RouteKey routeListKey) {
 128         return routeListKey.getRouteKey();
 129     }
 130
 131     @Override
 132     public List<Ipv4Route> extractAdjRibInRoutes(Routes routes) {
 133         verify(routes instanceof org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.inet.rev180329
 134             .bgp.rib.rib.peer.adj.rib.in.tables.routes.Ipv4RoutesCase, "Unrecognized routes %s", routes);
 135         return ((org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.inet.rev180329.bgp.rib.rib.peer
 136                 .adj.rib.in.tables.routes.Ipv4RoutesCase) routes).getIpv4Routes().nonnullIpv4Route();
 137     }
 138 }