bgp/rib-impl/src/main/java/org/opendaylight/protocol/bgp/rib/impl/RIBImpl.java

   1 /*
   2  * Copyright (c) 2013 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.rib.impl;
   9
  10 import javax.annotation.concurrent.ThreadSafe;
  11
  12 import org.opendaylight.controller.md.sal.common.api.TransactionStatus;
  13 import org.opendaylight.controller.sal.binding.api.data.DataModificationTransaction;
  14 import org.opendaylight.controller.sal.binding.api.data.DataProviderService;
  15 import org.opendaylight.protocol.bgp.rib.spi.AdjRIBsIn;
  16 import org.opendaylight.protocol.bgp.rib.spi.RIBExtensionConsumerContext;
  17 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.message.rev130919.Update;
  18 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.message.rev130919.UpdateBuilder;
  19 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.message.rev130919.update.Nlri;
  20 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.message.rev130919.update.PathAttributes;
  21 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.message.rev130919.update.WithdrawnRoutes;
  22 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.multiprotocol.rev130919.PathAttributes1;
  23 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.multiprotocol.rev130919.PathAttributes2;
  24 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.multiprotocol.rev130919.destination.destination.type.DestinationIpv4Builder;
  25 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.multiprotocol.rev130919.update.path.attributes.MpReachNlri;
  26 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.multiprotocol.rev130919.update.path.attributes.MpReachNlriBuilder;
  27 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.multiprotocol.rev130919.update.path.attributes.MpUnreachNlri;
  28 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.multiprotocol.rev130919.update.path.attributes.MpUnreachNlriBuilder;
  29 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.multiprotocol.rev130919.update.path.attributes.mp.reach.nlri.AdvertizedRoutesBuilder;
  30 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.multiprotocol.rev130919.update.path.attributes.mp.unreach.nlri.WithdrawnRoutesBuilder;
  31 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.rib.rev130925.rib.TablesKey;
  32 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.types.rev130919.Ipv4AddressFamily;
  33 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.types.rev130919.UnicastSubsequentAddressFamily;
  34 import org.opendaylight.yangtools.yang.common.RpcResult;
  35 import org.slf4j.Logger;
  36 import org.slf4j.LoggerFactory;
  37
  38 import com.google.common.base.Objects;
  39 import com.google.common.base.Objects.ToStringHelper;
  40 import com.google.common.base.Preconditions;
  41 import com.google.common.util.concurrent.FutureCallback;
  42 import com.google.common.util.concurrent.Futures;
  43 import com.google.common.util.concurrent.JdkFutureAdapters;
  44
  45 @ThreadSafe
  46 public class RIBImpl {
  47         private static final Logger LOG = LoggerFactory.getLogger(RIBImpl.class);
  48         private static final Update EOR = new UpdateBuilder().build();
  49         private final DataProviderService dps;
  50         private final RIBTables tables;
  51
  52         public RIBImpl(final RIBExtensionConsumerContext extensions, final DataProviderService dps) {
  53                 this.dps = Preconditions.checkNotNull(dps);
  54                 this.tables = new RIBTables(BGPObjectComparator.INSTANCE, extensions);
  55         }
  56
  57         synchronized void updateTables(final BGPPeer peer, final Update message) {
  58                 final DataModificationTransaction trans = this.dps.beginTransaction();
  59
  60                 if (EOR.equals(message)) {
  61                         final AdjRIBsIn ari = this.tables.getOrCreate(trans, new TablesKey(Ipv4AddressFamily.class, UnicastSubsequentAddressFamily.class));
  62                         if (ari != null) {
  63                                 ari.markUptodate(trans, peer);
  64                         } else {
  65                                 LOG.debug("End-of-RIB for IPv4 Unicast ignored");
  66                         }
  67                         return;
  68                 }
  69
  70                 final WithdrawnRoutes wr = message.getWithdrawnRoutes();
  71                 if (wr != null) {
  72                         final AdjRIBsIn ari = this.tables.getOrCreate(trans, new TablesKey(Ipv4AddressFamily.class, UnicastSubsequentAddressFamily.class));
  73                         if (ari != null) {
  74                                 ari.removeRoutes(trans, peer, new MpUnreachNlriBuilder().setAfi(Ipv4AddressFamily.class).setSafi(UnicastSubsequentAddressFamily.class).setWithdrawnRoutes(
  75                                                 new WithdrawnRoutesBuilder().setDestinationType(new DestinationIpv4Builder().setIpv4Prefixes(wr.getWithdrawnRoutes()).build()).build()).build());
  76                         } else {
  77                                 LOG.debug("Not removing objects from unhandled IPv4 Unicast");
  78                         }
  79                 }
  80
  81                 final PathAttributes attrs = message.getPathAttributes();
  82                 final PathAttributes2 mpu = attrs.getAugmentation(PathAttributes2.class);
  83                 if (mpu != null) {
  84                         final MpUnreachNlri nlri = mpu.getMpUnreachNlri();
  85
  86                         final AdjRIBsIn ari = this.tables.getOrCreate(trans, new TablesKey(nlri.getAfi(), nlri.getSafi()));
  87                         if (ari != null) {
  88                                 ari.removeRoutes(trans, peer, nlri);
  89                         } else {
  90                                 LOG.debug("Not removing objects from unhandled NLRI {}", nlri);
  91                         }
  92                 }
  93
  94                 final Nlri ar = message.getNlri();
  95                 if (ar != null) {
  96                         final AdjRIBsIn ari = this.tables.getOrCreate(trans, new TablesKey(Ipv4AddressFamily.class, UnicastSubsequentAddressFamily.class));
  97                         if (ari != null) {
  98                                 ari.addRoutes(trans, peer, new MpReachNlriBuilder().setAfi(Ipv4AddressFamily.class).setSafi(UnicastSubsequentAddressFamily.class).
  99                                                 setCNextHop(attrs.getCNextHop()).setAdvertizedRoutes(
 100                                                                 new AdvertizedRoutesBuilder().setDestinationType(new DestinationIpv4Builder().setIpv4Prefixes(ar.getNlri()).build()).build()).build(), attrs);
 101                         } else {
 102                                 LOG.debug("Not adding objects from unhandled IPv4 Unicast");
 103                         }
 104                 }
 105
 106                 final PathAttributes1 mpr = message.getPathAttributes().getAugmentation(PathAttributes1.class);
 107                 if (mpr != null) {
 108                         final MpReachNlri nlri = mpr.getMpReachNlri();
 109
 110                         final AdjRIBsIn ari = this.tables.getOrCreate(trans, new TablesKey(nlri.getAfi(), nlri.getSafi()));
 111                         if (ari != null) {
 112                                 ari.addRoutes(trans, peer, nlri, attrs);
 113                                 if (message.equals(ari.endOfRib())) {
 114                                         ari.markUptodate(trans, peer);
 115                                 }
 116                         } else {
 117                                 LOG.debug("Not adding objects from unhandled NLRI {}", nlri);
 118                         }
 119                 }
 120
 121                 Futures.addCallback(JdkFutureAdapters.listenInPoolThread(trans.commit()), new FutureCallback<RpcResult<TransactionStatus>>() {
 122                         @Override
 123                         public void onSuccess(final RpcResult<TransactionStatus> result) {
 124                                 LOG.debug("RIB modification successfully committed.");
 125                         }
 126
 127                         @Override
 128                         public void onFailure(final Throwable t) {
 129                                 LOG.error("Failed to commit RIB modification", t);
 130                         }
 131                 });
 132         }
 133
 134         synchronized void clearTable(final BGPPeer peer, final TablesKey key) {
 135                 final AdjRIBsIn ari = this.tables.get(key);
 136                 if (ari != null) {
 137                         final DataModificationTransaction trans = this.dps.beginTransaction();
 138                         ari.clear(trans, peer);
 139
 140                         Futures.addCallback(JdkFutureAdapters.listenInPoolThread(trans.commit()), new FutureCallback<RpcResult<TransactionStatus>>() {
 141                                 @Override
 142                                 public void onSuccess(final RpcResult<TransactionStatus> result) {
 143                                         // Nothing to do
 144                                 }
 145
 146                                 @Override
 147                                 public void onFailure(final Throwable t) {
 148                                         LOG.error("Failed to commit RIB modification", t);
 149                                 }
 150                         });
 151                 }
 152         }
 153
 154         @Override
 155         public final String toString() {
 156                 return addToStringAttributes(Objects.toStringHelper(this)).toString();
 157         }
 158
 159         protected ToStringHelper addToStringAttributes(final ToStringHelper toStringHelper) {
 160                 return toStringHelper;
 161         }
 162 }