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 org.opendaylight.mdsal.binding.dom.codec.api.BindingNormalizedNodeSerializer;
  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.rev180329.bgp.rib.rib.loc.rib.tables.routes.Ipv4RoutesCase;
  18 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.inet.rev180329.bgp.rib.rib.loc.rib.tables.routes.Ipv4RoutesCaseBuilder;
  19 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.inet.rev180329.ipv4.prefixes.DestinationIpv4;
  20 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.inet.rev180329.ipv4.prefixes.DestinationIpv4Builder;
  21 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.inet.rev180329.ipv4.prefixes.destination.ipv4.Ipv4Prefixes;
  22 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.inet.rev180329.ipv4.prefixes.destination.ipv4.Ipv4PrefixesBuilder;
  23 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.inet.rev180329.ipv4.routes.Ipv4Routes;
  24 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.inet.rev180329.ipv4.routes.Ipv4RoutesBuilder;
  25 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.inet.rev180329.ipv4.routes.ipv4.routes.Ipv4Route;
  26 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.inet.rev180329.ipv4.routes.ipv4.routes.Ipv4RouteBuilder;
  27 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.inet.rev180329.ipv4.routes.ipv4.routes.Ipv4RouteKey;
  28 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;
  29 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.message.rev180329.Ipv4PrefixAndPathId;
  30 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.message.rev180329.PathId;
  31 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.message.rev180329.path.attributes.Attributes;
  32 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.multiprotocol.rev180329.destination.DestinationType;
  33 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.types.rev180329.Ipv4AddressFamily;
  34 import org.opendaylight.yangtools.yang.data.api.schema.MapEntryNode;
  35 import org.opendaylight.yangtools.yang.data.api.schema.NormalizedNodes;
  36
  37 /**
  38  * Class supporting IPv4 unicast RIBs.
  39  */
  40 final class IPv4RIBSupport extends AbstractIPRibSupport<Ipv4RoutesCase, Ipv4Routes, Ipv4Route, Ipv4RouteKey> {
  41
  42     private static final Ipv4Routes EMPTY_CONTAINER
  43             = new Ipv4RoutesBuilder().setIpv4Route(Collections.emptyList()).build();
  44     private static final Ipv4RoutesCase EMPTY_CASE = new Ipv4RoutesCaseBuilder().setIpv4Routes(EMPTY_CONTAINER).build();
  45     private static IPv4RIBSupport SINGLETON = null;
  46
  47     private IPv4RIBSupport(final BindingNormalizedNodeSerializer mappingService) {
  48         super(
  49                 mappingService,
  50                 Ipv4PrefixAndPathId.class,
  51                 Ipv4AddressFamily.class,
  52                 Ipv4RoutesCase.class,
  53                 Ipv4Routes.class,
  54                 Ipv4Route.class,
  55                 DestinationIpv4.QNAME,
  56                 Ipv4Prefixes.QNAME);
  57     }
  58
  59     static synchronized IPv4RIBSupport getInstance(final BindingNormalizedNodeSerializer mappingService) {
  60         if (SINGLETON == null) {
  61             SINGLETON = new IPv4RIBSupport(mappingService);
  62         }
  63         return SINGLETON;
  64     }
  65
  66     private List<Ipv4Prefixes> extractPrefixes(final Collection<MapEntryNode> routes) {
  67         final List<Ipv4Prefixes> prefs = new ArrayList<>(routes.size());
  68         for (final MapEntryNode route : routes) {
  69             final String prefix = (String) NormalizedNodes.findNode(route, routePrefixIdentifier()).get().getValue();
  70             final Ipv4PrefixesBuilder prefixBuilder = new Ipv4PrefixesBuilder().setPrefix(new Ipv4Prefix(prefix));
  71             prefixBuilder.setPathId(PathIdUtil.buildPathId(route, routePathIdNid()));
  72             prefs.add(prefixBuilder.build());
  73         }
  74         return prefs;
  75     }
  76
  77     @Override
  78     protected DestinationType buildDestination(final Collection<MapEntryNode> routes) {
  79         return new DestinationIpv4CaseBuilder().setDestinationIpv4(new DestinationIpv4Builder()
  80                 .setIpv4Prefixes(extractPrefixes(routes)).build()).build();
  81     }
  82
  83     @Override
  84     protected DestinationType buildWithdrawnDestination(final Collection<MapEntryNode> routes) {
  85         return new org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.inet.rev180329.update
  86                 .attributes.mp.unreach.nlri.withdrawn.routes.destination.type.DestinationIpv4CaseBuilder()
  87                 .setDestinationIpv4(new DestinationIpv4Builder().setIpv4Prefixes(extractPrefixes(routes))
  88                         .build()).build();
  89     }
  90
  91     @Override
  92     public Ipv4Route createRoute(final Ipv4Route route, final String routeKey, final long pathId,
  93             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(createRouteListKey(pathId, routeKey)).setAttributes(attributes);
 101         return builder.build();
 102     }
 103
 104     @Override
 105     public Ipv4RoutesCase emptyRoutesCase() {
 106         return EMPTY_CASE;
 107     }
 108
 109     @Override
 110     public Ipv4Routes emptyRoutesContainer() {
 111         return EMPTY_CONTAINER;
 112     }
 113
 114     @Override
 115     public Ipv4RouteKey createRouteListKey(final long pathId, final String routeKey) {
 116         return new Ipv4RouteKey(new PathId(pathId), routeKey);
 117     }
 118 }