bgp/evpn/src/main/java/org/opendaylight/protocol/bgp/evpn/impl/EvpnRibSupport.java

   1 /*
   2  * Copyright (c) 2016 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.evpn.impl;
   9
  10 import com.google.common.base.Optional;
  11 import com.google.common.collect.ImmutableCollection;
  12 import com.google.common.collect.ImmutableSet;
  13 import io.netty.buffer.ByteBuf;
  14 import io.netty.buffer.Unpooled;
  15 import java.util.Collection;
  16 import java.util.Collections;
  17 import java.util.List;
  18 import java.util.stream.Collectors;
  19 import javax.annotation.Nonnull;
  20 import org.opendaylight.controller.md.sal.dom.api.DOMDataWriteTransaction;
  21 import org.opendaylight.protocol.bgp.evpn.impl.nlri.EvpnNlriParser;
  22 import org.opendaylight.protocol.bgp.rib.spi.AbstractRIBSupport;
  23 import org.opendaylight.protocol.util.ByteArray;
  24 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.evpn.rev160321.EvpnSubsequentAddressFamily;
  25 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.evpn.rev160321.L2vpnAddressFamily;
  26 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.evpn.rev160321.bgp.rib.rib.loc.rib.tables.routes.EvpnRoutesCase;
  27 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.evpn.rev160321.evpn.destination.EvpnDestination;
  28 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.evpn.rev160321.evpn.routes.EvpnRoutes;
  29 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.evpn.rev160321.evpn.routes.evpn.routes.EvpnRoute;
  30 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.evpn.rev160321.update.attributes.mp.reach.nlri.advertized.routes.destination.type.destination.evpn._case.DestinationEvpn;
  31 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.evpn.rev160321.update.attributes.mp.unreach.nlri.withdrawn.routes.destination.type.DestinationEvpnCaseBuilder;
  32 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.evpn.rev160321.update.attributes.mp.unreach.nlri.withdrawn.routes.destination.type.destination.evpn._case.DestinationEvpnBuilder;
  33 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.multiprotocol.rev130919.destination.DestinationType;
  34 import org.opendaylight.yangtools.yang.binding.DataObject;
  35 import org.opendaylight.yangtools.yang.common.QName;
  36 import org.opendaylight.yangtools.yang.data.api.YangInstanceIdentifier;
  37 import org.opendaylight.yangtools.yang.data.api.YangInstanceIdentifier.NodeIdentifier;
  38 import org.opendaylight.yangtools.yang.data.api.YangInstanceIdentifier.NodeIdentifierWithPredicates;
  39 import org.opendaylight.yangtools.yang.data.api.YangInstanceIdentifier.PathArgument;
  40 import org.opendaylight.yangtools.yang.data.api.schema.ContainerNode;
  41 import org.opendaylight.yangtools.yang.data.api.schema.DataContainerChild;
  42 import org.opendaylight.yangtools.yang.data.api.schema.MapEntryNode;
  43 import org.opendaylight.yangtools.yang.data.api.schema.UnkeyedListEntryNode;
  44 import org.opendaylight.yangtools.yang.data.api.schema.UnkeyedListNode;
  45 import org.slf4j.Logger;
  46 import org.slf4j.LoggerFactory;
  47
  48 final class EvpnRibSupport extends AbstractRIBSupport {
  49     private static final EvpnRibSupport SINGLETON = new EvpnRibSupport();
  50     private static final Logger LOG = LoggerFactory.getLogger(EvpnRibSupport.class);
  51     private static final QName ROUTE_KEY = QName.create(EvpnRoute.QNAME, "route-key").intern();
  52     private static final NodeIdentifier NLRI_ROUTES_LIST = NodeIdentifier.create(EvpnDestination.QNAME);
  53
  54     private EvpnRibSupport() {
  55         super(EvpnRoutesCase.class, EvpnRoutes.class, EvpnRoute.class, L2vpnAddressFamily.class, EvpnSubsequentAddressFamily.class, DestinationEvpn.QNAME);
  56     }
  57
  58     static EvpnRibSupport getInstance() {
  59         return SINGLETON;
  60     }
  61
  62     @Nonnull
  63     @Override
  64     public ImmutableCollection<Class<? extends DataObject>> cacheableAttributeObjects() {
  65         return ImmutableSet.of();
  66     }
  67
  68     @Nonnull
  69     @Override
  70     public ImmutableCollection<Class<? extends DataObject>> cacheableNlriObjects() {
  71         return ImmutableSet.of();
  72     }
  73
  74     @Override
  75     public boolean isComplexRoute() {
  76         return true;
  77     }
  78
  79     @Nonnull
  80     @Override
  81     protected DestinationType buildDestination(@Nonnull final Collection<MapEntryNode> routes) {
  82         return new org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.evpn.rev160321.update.attributes.mp.reach.nlri.advertized
  83             .routes.destination.type.DestinationEvpnCaseBuilder().setDestinationEvpn(new org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.
  84             ns.yang.bgp.evpn.rev160321.update.attributes.mp.reach.nlri.advertized.routes.destination.type.destination.evpn._case.
  85             DestinationEvpnBuilder().setEvpnDestination(extractRoutes(routes)).build()).build();
  86     }
  87
  88     @Nonnull
  89     @Override
  90     protected DestinationType buildWithdrawnDestination(@Nonnull final Collection<MapEntryNode> routes) {
  91         return new DestinationEvpnCaseBuilder().setDestinationEvpn(new DestinationEvpnBuilder().setEvpnDestination(extractRoutes(routes)).build()).build();
  92     }
  93
  94     private List<EvpnDestination> extractRoutes(final Collection<MapEntryNode> routes) {
  95         return routes.stream().map(EvpnNlriParser::extractEvpnDestination).collect(Collectors.toList());
  96     }
  97
  98     @Override
  99     protected void processDestination(final DOMDataWriteTransaction tx, final YangInstanceIdentifier routesPath,
 100         final ContainerNode destination, final ContainerNode attributes, final ApplyRoute function) {
 101         if (destination != null) {
 102             final Optional<DataContainerChild<? extends PathArgument, ?>> maybeRoutes = destination.getChild(NLRI_ROUTES_LIST);
 103             if (maybeRoutes.isPresent()) {
 104                 final DataContainerChild<? extends PathArgument, ?> routes = maybeRoutes.get();
 105                 if (routes instanceof UnkeyedListNode) {
 106                     final YangInstanceIdentifier base = routesPath.node(routesContainerIdentifier()).node(routeNid());
 107                     for (final UnkeyedListEntryNode e : ((UnkeyedListNode) routes).getValue()) {
 108                         final NodeIdentifierWithPredicates routeKey = createRouteKey(e);
 109                         function.apply(tx, base, routeKey, e, attributes);
 110                     }
 111                 } else {
 112                     LOG.warn("Routes {} are not a map", routes);
 113                 }
 114             }
 115         }
 116     }
 117
 118     private NodeIdentifierWithPredicates createRouteKey(final UnkeyedListEntryNode evpn) {
 119         final ByteBuf buffer = Unpooled.buffer();
 120         final EvpnDestination dest = EvpnNlriParser.extractRouteKeyDestination(evpn);
 121         EvpnNlriParser.serializeNlri(Collections.singletonList(dest), buffer);
 122         return new NodeIdentifierWithPredicates(routeQName(), ROUTE_KEY, ByteArray.readAllBytes(buffer));
 123     }
 124
 125 }