bgp/extensions/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 io.netty.buffer.ByteBuf;
  11 import io.netty.buffer.Unpooled;
  12 import java.util.ArrayList;
  13 import java.util.Collection;
  14 import java.util.Collections;
  15 import java.util.List;
  16 import java.util.Optional;
  17 import java.util.stream.Collectors;
  18 import org.opendaylight.mdsal.binding.dom.codec.api.BindingNormalizedNodeSerializer;
  19 import org.opendaylight.mdsal.dom.api.DOMDataTreeWriteTransaction;
  20 import org.opendaylight.protocol.bgp.evpn.impl.nlri.EvpnNlriParser;
  21 import org.opendaylight.protocol.bgp.parser.spi.PathIdUtil;
  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.rev200120.EvpnSubsequentAddressFamily;
  25 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.evpn.rev200120.L2vpnAddressFamily;
  26 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.evpn.rev200120.bgp.rib.rib.loc.rib.tables.routes.EvpnRoutesCase;
  27 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.evpn.rev200120.evpn.destination.EvpnDestination;
  28 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.evpn.rev200120.evpn.routes.EvpnRoutes;
  29 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.evpn.rev200120.evpn.routes.evpn.routes.EvpnRoute;
  30 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.evpn.rev200120.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.rev200120.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withdrawn.routes.destination.type.DestinationEvpnCaseBuilder;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.rev200120.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withdrawn.routes.destination.type.destination.evpn._case.DestinationEvpnBuilder;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.rev180329.destination.DestinationType;
  34 import org.opendaylight.yangtools.yang.data.api.YangInstanceIdentifier;
  35 import org.opendaylight.yangtools.yang.data.api.YangInstanceIdentifier.NodeIdentifier;
  36 import org.opendaylight.yangtools.yang.data.api.YangInstanceIdentifier.NodeIdentifierWithPredicates;
  37 import org.opendaylight.yangtools.yang.data.api.YangInstanceIdentifier.PathArgument;
  38 import org.opendaylight.yangtools.yang.data.api.schema.ContainerNode;
  39 import org.opendaylight.yangtools.yang.data.api.schema.DataContainerChild;
  40 import org.opendaylight.yangtools.yang.data.api.schema.MapEntryNode;
  41 import org.opendaylight.yangtools.yang.data.api.schema.UnkeyedListEntryNode;
  42 import org.opendaylight.yangtools.yang.data.api.schema.UnkeyedListNode;
  43 import org.slf4j.Logger;
  44 import org.slf4j.LoggerFactory;
  45
  46 final class EvpnRibSupport extends AbstractRIBSupport<EvpnRoutesCase, EvpnRoutes, EvpnRoute> {
  47     private static final Logger LOG = LoggerFactory.getLogger(EvpnRibSupport.class);
  48
  49     private static final NodeIdentifier NLRI_ROUTES_LIST = NodeIdentifier.create(EvpnDestination.QNAME);
  50
  51     EvpnRibSupport(final BindingNormalizedNodeSerializer mappingService) {
  52         super(mappingService,
  53                 EvpnRoutesCase.class,
  54                 EvpnRoutes.class,
  55                 EvpnRoute.class,
  56                 L2vpnAddressFamily.class,
  57                 EvpnSubsequentAddressFamily.class,
  58                 DestinationEvpn.QNAME);
  59     }
  60
  61     @Override
  62     protected DestinationType buildDestination(final Collection<MapEntryNode> routes) {
  63         return new org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.evpn.rev200120.update
  64                 .attributes.mp.reach.nlri.advertized.routes.destination.type.DestinationEvpnCaseBuilder()
  65                 .setDestinationEvpn(new org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang
  66                     .bgp.evpn.rev200120.update.attributes.mp.reach.nlri.advertized.routes.destination.type.destination
  67                         .evpn._case.DestinationEvpnBuilder().setEvpnDestination(extractRoutes(routes)).build()).build();
  68     }
  69
  70     @Override
  71     protected DestinationType buildWithdrawnDestination(final Collection<MapEntryNode> routes) {
  72         return new DestinationEvpnCaseBuilder().setDestinationEvpn(new DestinationEvpnBuilder()
  73                 .setEvpnDestination(extractRoutes(routes)).build()).build();
  74     }
  75
  76     private static List<EvpnDestination> extractRoutes(final Collection<MapEntryNode> routes) {
  77         return routes.stream().map(EvpnNlriParser::extractEvpnDestination).collect(Collectors.toList());
  78     }
  79
  80     @Override
  81     protected Collection<NodeIdentifierWithPredicates> processDestination(final DOMDataTreeWriteTransaction tx,
  82                                                                           final YangInstanceIdentifier routesPath,
  83                                                                           final ContainerNode destination,
  84                                                                           final ContainerNode attributes,
  85                                                                           final ApplyRoute function) {
  86         if (destination != null) {
  87             final Optional<DataContainerChild<? extends PathArgument, ?>> maybeRoutes = destination
  88                     .getChild(NLRI_ROUTES_LIST);
  89             if (maybeRoutes.isPresent()) {
  90                 final DataContainerChild<? extends PathArgument, ?> routes = maybeRoutes.get();
  91                 if (routes instanceof UnkeyedListNode) {
  92                     final YangInstanceIdentifier base = routesYangInstanceIdentifier(routesPath);
  93                     final Collection<UnkeyedListEntryNode> routesList = ((UnkeyedListNode) routes).getValue();
  94                     final List<NodeIdentifierWithPredicates> keys = new ArrayList<>(routesList.size());
  95                     for (final UnkeyedListEntryNode evpnDest : routesList) {
  96                         final NodeIdentifierWithPredicates routeKey = createRouteKey(evpnDest);
  97                         function.apply(tx, base, routeKey, evpnDest, attributes);
  98                         keys.add(routeKey);
  99                     }
 100                     return keys;
 101                 }
 102                 LOG.warn("Routes {} are not a map", routes);
 103             }
 104         }
 105         return Collections.emptyList();
 106     }
 107
 108     private NodeIdentifierWithPredicates createRouteKey(final UnkeyedListEntryNode evpn) {
 109         final ByteBuf buffer = Unpooled.buffer();
 110         final EvpnDestination dest = EvpnNlriParser.extractRouteKeyDestination(evpn);
 111         EvpnNlriParser.serializeNlri(Collections.singletonList(dest), buffer);
 112         final Optional<DataContainerChild<? extends PathArgument, ?>> maybePathIdLeaf =
 113                 evpn.getChild(routePathIdNid());
 114         return PathIdUtil.createNidKey(routeQName(), routeKeyTemplate(),
 115                 ByteArray.encodeBase64(buffer), maybePathIdLeaf);
 116     }
 117 }