vpnmanager/impl/src/main/java/org/opendaylight/netvirt/vpnmanager/populator/impl/L3vpnOverMplsGrePopulator.java

   1 /*
   2  * Copyright (c) 2017 Ericsson India Global Services Pvt Ltd. 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.netvirt.vpnmanager.populator.impl;
   9
  10 import java.util.Arrays;
  11 import java.util.Collections;
  12 import java.util.List;
  13 import java.util.Objects;
  14 import javax.annotation.PostConstruct;
  15 import javax.annotation.PreDestroy;
  16 import javax.inject.Inject;
  17 import javax.inject.Singleton;
  18 import org.opendaylight.controller.md.sal.binding.api.DataBroker;
  19 import org.opendaylight.genius.infra.Datastore.Configuration;
  20 import org.opendaylight.genius.infra.TypedWriteTransaction;
  21 import org.opendaylight.netvirt.bgpmanager.api.IBgpManager;
  22 import org.opendaylight.netvirt.fibmanager.api.IFibManager;
  23 import org.opendaylight.netvirt.fibmanager.api.RouteOrigin;
  24 import org.opendaylight.netvirt.vpnmanager.VpnConstants;
  25 import org.opendaylight.netvirt.vpnmanager.VpnUtil;
  26 import org.opendaylight.netvirt.vpnmanager.populator.input.L3vpnInput;
  27 import org.opendaylight.netvirt.vpnmanager.populator.registry.L3vpnRegistry;
  28 import org.opendaylight.yang.gen.v1.urn.opendaylight.genius.idmanager.rev160406.IdManagerService;
  29 import org.opendaylight.yang.gen.v1.urn.opendaylight.netvirt.fibmanager.rev150330.vrfentries.VrfEntry;
  30 import org.opendaylight.yang.gen.v1.urn.opendaylight.netvirt.l3vpn.rev130911.adjacency.list.Adjacency;
  31 import org.opendaylight.yang.gen.v1.urn.opendaylight.netvirt.l3vpn.rev130911.adjacency.list.AdjacencyBuilder;
  32 import org.opendaylight.yang.gen.v1.urn.opendaylight.netvirt.l3vpn.rev130911.adjacency.list.AdjacencyKey;
  33 import org.opendaylight.yang.gen.v1.urn.opendaylight.netvirt.l3vpn.rev130911.vpn.instance.op.data.VpnInstanceOpDataEntry;
  34 import org.slf4j.Logger;
  35 import org.slf4j.LoggerFactory;
  36
  37 @Singleton
  38 public class L3vpnOverMplsGrePopulator extends L3vpnPopulator {
  39     private final IdManagerService idManager;
  40     private static final Logger LOG = LoggerFactory.getLogger(L3vpnOverMplsGrePopulator.class);
  41
  42     @Inject
  43     public L3vpnOverMplsGrePopulator(DataBroker dataBroker, IBgpManager bgpManager, IFibManager fibManager,
  44             IdManagerService idManager, VpnUtil vpnUtil) {
  45         super(dataBroker, bgpManager, fibManager, vpnUtil);
  46         this.idManager = idManager;
  47     }
  48
  49     @PostConstruct
  50     public void init() {
  51         LOG.info("{} start", getClass().getSimpleName());
  52         L3vpnRegistry.registerL3vpnPopulator(VrfEntry.EncapType.Mplsgre, this);
  53     }
  54
  55     @PreDestroy
  56     public void close() {
  57         LOG.trace("L3vpnOverMplsGrePopulator Closed");
  58     }
  59
  60     @Override
  61     public void populateFib(L3vpnInput input, TypedWriteTransaction<Configuration> writeConfigTxn) {
  62         if (input.getRouteOrigin() == RouteOrigin.CONNECTED) {
  63             LOG.info("populateFib : Found SubnetRoute for subnet {} rd {}", input.getSubnetIp(), input.getPrimaryRd());
  64             addSubnetRouteFibEntry(input);
  65             return;
  66         }
  67         Adjacency nextHop = input.getNextHop();
  68         long label = nextHop.getLabel();
  69         String vpnName = input.getVpnName();
  70         String primaryRd = input.getPrimaryRd();
  71         String rd = input.getRd();
  72         String nextHopIp = input.getNextHopIp();
  73         VrfEntry.EncapType encapType = input.getEncapType();
  74         LOG.info("populateFib : Found Interface Adjacency with prefix {} rd {}", nextHop.getIpAddress(), primaryRd);
  75         List<VpnInstanceOpDataEntry> vpnsToImportRoute = vpnUtil.getVpnsImportingMyRoute(vpnName);
  76         long vpnId = vpnUtil.getVpnId(vpnName);
  77         String nextHopIpAddress = nextHop.getIpAddress(); // it is a valid case for nextHopIpAddress to be null
  78         // Not advertising the prefix to BGP for InternalVpn (where rd is vpnName),
  79         // transparentInternetVpn (where rd is Network name)
  80         // and internalVpnForExtraRoute (where rd is DpnId)
  81         if (VpnUtil.isEligibleForBgp(primaryRd, input.getVpnName(), input.getDpnId(), input.getNetworkName())) {
  82             // the DpnId is set as rd in case of extra routes present in router based VPN
  83             addToLabelMapper(label, input.getDpnId(), nextHopIpAddress,
  84                     Arrays.asList(nextHopIp), vpnId, input.getInterfaceName(), null,false,
  85                     primaryRd);
  86             Objects.requireNonNull(input.getRouteOrigin(), "RouteOrigin is mandatory");
  87             addPrefixToBGP(rd, primaryRd, null /*macAddress*/, nextHopIpAddress, nextHopIp, encapType,
  88                     label, 0 /*l3vni*/, input.getGatewayMac(), input.getRouteOrigin(), writeConfigTxn);
  89             //TODO: ERT - check for VPNs importing my route
  90             for (VpnInstanceOpDataEntry vpn : vpnsToImportRoute) {
  91                 String vpnRd = vpn.getVrfId();
  92                 if (vpnRd != null) {
  93                     fibManager.addOrUpdateFibEntry(vpnRd, null /*macAddress*/,
  94                             nextHopIpAddress, Arrays.asList(nextHopIp), encapType, (int) label,
  95                             0 /*l3vni*/, input.getGatewayMac(), primaryRd, RouteOrigin.SELF_IMPORTED,
  96                             writeConfigTxn);
  97                     LOG.info("populateFib: Exported route with rd {} prefix {} nexthop {} label {}"
  98                             + " to VPN {} for interface {} on dpn {}", vpnRd, nextHop.getIpAddress(), nextHopIp, label,
  99                             vpn, input.getInterfaceName(), input.getDpnId());
 100                 }
 101             }
 102         } else {
 103             // ### add FIB route directly
 104             fibManager.addOrUpdateFibEntry(vpnName, null /*macAddress*/,
 105                     nextHopIpAddress, Arrays.asList(nextHopIp), encapType, (int) label,
 106                     0 /*l3vni*/, input.getGatewayMac(), null /*parentVpnRd*/, input.getRouteOrigin(), writeConfigTxn);
 107             LOG.info("populateFib: Added internal FIB entry for prefix {} nexthop {} label {}"
 108                     + " to VPN {} for interface {} on dpn {}", nextHop.getIpAddress(), nextHopIp, label, vpnName,
 109                     input.getInterfaceName(), input.getDpnId());
 110         }
 111     }
 112
 113     @Override
 114     public Adjacency createOperationalAdjacency(L3vpnInput input) {
 115         Adjacency nextHop = input.getNextHop();
 116         String nextHopIp = input.getNextHopIp();
 117         String prefix = VpnUtil.getIpPrefix(nextHop.getIpAddress());
 118         List<String> adjNextHop = nextHop.getNextHopIpList();
 119         String rd = input.getRd();
 120         String primaryRd = input.getPrimaryRd();
 121         String vpnName = input.getVpnName();
 122         long label = vpnUtil.getUniqueId(VpnConstants.VPN_IDPOOL_NAME, VpnUtil.getNextHopLabelKey(primaryRd, prefix));
 123         if (label == VpnConstants.INVALID_LABEL) {
 124             String error = "Unable to fetch label from Id Manager. Bailing out of creation of operational "
 125                     + "vpn interface adjacency " + prefix + "for vpn " + vpnName;
 126             throw new NullPointerException(error);
 127         }
 128         List<String> nextHopList = adjNextHop != null && !adjNextHop.isEmpty() ? adjNextHop
 129                 : nextHopIp == null ? Collections.emptyList() : Collections.singletonList(nextHopIp);
 130
 131         return new AdjacencyBuilder(nextHop).setLabel(label).setNextHopIpList(nextHopList)
 132                 .setIpAddress(prefix).setVrfId(rd).withKey(new AdjacencyKey(prefix))
 133                 .setAdjacencyType(nextHop.getAdjacencyType())
 134                 .setSubnetGatewayMacAddress(nextHop.getSubnetGatewayMacAddress()).build();
 135     }
 136 }