natservice/impl/src/main/java/org/opendaylight/netvirt/natservice/internal/ExternalNetworksChangeListener.java

   1 /*
   2  * Copyright (c) 2016 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.natservice.internal;
   9
  10 import com.google.common.base.Optional;
  11 import java.math.BigInteger;
  12 import java.util.Collection;
  13 import java.util.Collections;
  14 import java.util.List;
  15 import java.util.concurrent.ExecutionException;
  16 import javax.annotation.PostConstruct;
  17 import javax.inject.Inject;
  18 import javax.inject.Singleton;
  19 import org.opendaylight.controller.md.sal.binding.api.DataBroker;
  20 import org.opendaylight.controller.md.sal.binding.api.WriteTransaction;
  21 import org.opendaylight.controller.md.sal.common.api.data.LogicalDatastoreType;
  22 import org.opendaylight.genius.datastoreutils.AsyncDataTreeChangeListenerBase;
  23 import org.opendaylight.genius.infra.ManagedNewTransactionRunner;
  24 import org.opendaylight.genius.infra.ManagedNewTransactionRunnerImpl;
  25 import org.opendaylight.genius.mdsalutil.MDSALUtil;
  26 import org.opendaylight.genius.mdsalutil.NwConstants;
  27 import org.opendaylight.infrautils.jobcoordinator.JobCoordinator;
  28 import org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.yang.types.rev130715.Uuid;
  29 import org.opendaylight.yang.gen.v1.urn.opendaylight.genius.interfacemanager.rpcs.rev160406.OdlInterfaceRpcService;
  30 import org.opendaylight.yang.gen.v1.urn.opendaylight.netvirt.natservice.config.rev170206.NatserviceConfig;
  31 import org.opendaylight.yang.gen.v1.urn.opendaylight.netvirt.natservice.config.rev170206.NatserviceConfig.NatMode;
  32 import org.opendaylight.yang.gen.v1.urn.opendaylight.netvirt.natservice.rev160111.ExternalNetworks;
  33 import org.opendaylight.yang.gen.v1.urn.opendaylight.netvirt.natservice.rev160111.IntextIpMap;
  34 import org.opendaylight.yang.gen.v1.urn.opendaylight.netvirt.natservice.rev160111.external.networks.Networks;
  35 import org.opendaylight.yang.gen.v1.urn.opendaylight.netvirt.natservice.rev160111.floating.ip.info.RouterPorts;
  36 import org.opendaylight.yang.gen.v1.urn.opendaylight.netvirt.natservice.rev160111.floating.ip.info.router.ports.Ports;
  37 import org.opendaylight.yang.gen.v1.urn.opendaylight.netvirt.natservice.rev160111.floating.ip.info.router.ports.ports.InternalToExternalPortMap;
  38 import org.opendaylight.yang.gen.v1.urn.opendaylight.netvirt.natservice.rev160111.intext.ip.map.ip.mapping.IpMap;
  39 import org.opendaylight.yang.gen.v1.urn.opendaylight.netvirt.natservice.rev160111.napt.switches.RouterToNaptSwitch;
  40 import org.opendaylight.yangtools.yang.binding.InstanceIdentifier;
  41 import org.opendaylight.yangtools.yang.binding.InstanceIdentifier.InstanceIdentifierBuilder;
  42 import org.slf4j.Logger;
  43 import org.slf4j.LoggerFactory;
  44
  45 @Singleton
  46 public class ExternalNetworksChangeListener
  47         extends AsyncDataTreeChangeListenerBase<Networks, ExternalNetworksChangeListener> {
  48     private static final Logger LOG = LoggerFactory.getLogger(ExternalNetworksChangeListener.class);
  49     private final DataBroker dataBroker;
  50     private final ManagedNewTransactionRunner txRunner;
  51     private final FloatingIPListener floatingIpListener;
  52     private final ExternalRoutersListener externalRouterListener;
  53     private final OdlInterfaceRpcService interfaceManager;
  54     private final JobCoordinator coordinator;
  55     private final NatMode natMode;
  56
  57     @Inject
  58     public ExternalNetworksChangeListener(final DataBroker dataBroker, final FloatingIPListener floatingIpListener,
  59                                           final ExternalRoutersListener externalRouterListener,
  60                                           final OdlInterfaceRpcService interfaceManager,
  61                                           final NatserviceConfig config,
  62                                           final JobCoordinator coordinator) {
  63         super(Networks.class, ExternalNetworksChangeListener.class);
  64         this.dataBroker = dataBroker;
  65         this.txRunner = new ManagedNewTransactionRunnerImpl(dataBroker);
  66         this.floatingIpListener = floatingIpListener;
  67         this.externalRouterListener = externalRouterListener;
  68         this.interfaceManager = interfaceManager;
  69         this.coordinator = coordinator;
  70         if (config != null) {
  71             this.natMode = config.getNatMode();
  72         } else {
  73             this.natMode = NatMode.Controller;
  74         }
  75     }
  76
  77     @Override
  78     @PostConstruct
  79     public void init() {
  80         LOG.info("{} init", getClass().getSimpleName());
  81         registerListener(LogicalDatastoreType.CONFIGURATION, dataBroker);
  82     }
  83
  84     @Override
  85     protected InstanceIdentifier<Networks> getWildCardPath() {
  86         return InstanceIdentifier.create(ExternalNetworks.class).child(Networks.class);
  87     }
  88
  89     @Override
  90     protected void add(InstanceIdentifier<Networks> identifier, Networks networks) {
  91
  92     }
  93
  94     @Override
  95     protected ExternalNetworksChangeListener getDataTreeChangeListener() {
  96         return ExternalNetworksChangeListener.this;
  97     }
  98
  99     @Override
 100     protected void remove(InstanceIdentifier<Networks> identifier, Networks networks) {
 101         if (identifier == null || networks == null || networks.getRouterIds().isEmpty()) {
 102             LOG.warn("remove : returning without processing since networks/identifier is null: "
 103                 + "identifier: {}, networks: {}", identifier, networks);
 104             return;
 105         }
 106
 107         for (Uuid routerId: networks.getRouterIds()) {
 108             String routerName = routerId.toString();
 109
 110             InstanceIdentifier<RouterToNaptSwitch> routerToNaptSwitchInstanceIdentifier =
 111                     NatUtil.buildNaptSwitchIdentifier(routerName);
 112
 113             MDSALUtil.syncDelete(dataBroker, LogicalDatastoreType.OPERATIONAL, routerToNaptSwitchInstanceIdentifier);
 114
 115             LOG.debug("remove : successful deletion of data in napt-switches container");
 116         }
 117     }
 118
 119     @Override
 120     protected void update(InstanceIdentifier<Networks> identifier, Networks original, Networks update) {
 121         //Check for VPN disassociation
 122         Uuid originalVpn = original.getVpnid();
 123         Uuid updatedVpn = update.getVpnid();
 124         coordinator.enqueueJob(NatConstants.NAT_DJC_PREFIX + update.getKey(),
 125             () -> Collections.singletonList(txRunner.callWithNewWriteOnlyTransactionAndSubmit(tx -> {
 126                 if (originalVpn == null && updatedVpn != null) {
 127                     //external network is dis-associated from L3VPN instance
 128                     associateExternalNetworkWithVPN(update, tx);
 129                 } else if (originalVpn != null && updatedVpn == null) {
 130                     //external network is associated with vpn
 131                     disassociateExternalNetworkFromVPN(update, originalVpn.getValue());
 132                     //Remove the SNAT entries
 133                     removeSnatEntries(original, original.getId(), tx);
 134                 }
 135             })), NatConstants.NAT_DJC_MAX_RETRIES);
 136     }
 137
 138     private void removeSnatEntries(Networks original, Uuid networkUuid, WriteTransaction writeFlowInvTx) {
 139         List<Uuid> routerUuids = original.getRouterIds();
 140         for (Uuid routerUuid : routerUuids) {
 141             Long routerId = NatUtil.getVpnId(dataBroker, routerUuid.getValue());
 142             if (routerId == NatConstants.INVALID_ID) {
 143                 LOG.error("removeSnatEntries : Invalid routerId returned for routerName {}", routerUuid.getValue());
 144                 return;
 145             }
 146             Collection<String> externalIps = NatUtil.getExternalIpsForRouter(dataBroker,routerId);
 147             if (natMode == NatMode.Controller) {
 148                 externalRouterListener.handleDisableSnatInternetVpn(routerUuid.getValue(), routerId, networkUuid,
 149                         externalIps, original.getVpnid().getValue(), writeFlowInvTx);
 150             }
 151         }
 152     }
 153
 154     private void associateExternalNetworkWithVPN(Networks network, WriteTransaction writeFlowInvTx) {
 155         List<Uuid> routerIds = network.getRouterIds();
 156         for (Uuid routerId : routerIds) {
 157             //long router = NatUtil.getVpnId(dataBroker, routerId.getValue());
 158
 159             InstanceIdentifier<RouterPorts> routerPortsId = NatUtil.getRouterPortsId(routerId.getValue());
 160             Optional<RouterPorts> optRouterPorts = MDSALUtil.read(dataBroker, LogicalDatastoreType.CONFIGURATION,
 161                 routerPortsId);
 162             if (!optRouterPorts.isPresent()) {
 163                 LOG.debug("associateExternalNetworkWithVPN : Could not read Router Ports data object with id: {} "
 164                         + "to handle associate ext nw {}", routerId, network.getId());
 165                 continue;
 166             }
 167             RouterPorts routerPorts = optRouterPorts.get();
 168             List<Ports> interfaces = routerPorts.getPorts();
 169             for (Ports port : interfaces) {
 170                 String portName = port.getPortName();
 171                 BigInteger dpnId = NatUtil.getDpnForInterface(interfaceManager, portName);
 172                 if (dpnId.equals(BigInteger.ZERO)) {
 173                     LOG.debug("associateExternalNetworkWithVPN : DPN not found for {}, "
 174                             + "skip handling of ext nw {} association", portName, network.getId());
 175                     continue;
 176                 }
 177                 List<InternalToExternalPortMap> intExtPortMapList = port.getInternalToExternalPortMap();
 178                 for (InternalToExternalPortMap ipMap : intExtPortMapList) {
 179                     //remove all VPN related entries
 180                     floatingIpListener.createNATFlowEntries(dpnId, portName, routerId.getValue(), network.getId(),
 181                             ipMap, writeFlowInvTx);
 182                 }
 183             }
 184         }
 185
 186         // SNAT
 187         for (Uuid routerId : routerIds) {
 188             LOG.debug("associateExternalNetworkWithVPN() : for routerId {}",  routerId);
 189             Uuid networkId = network.getId();
 190             if (networkId == null) {
 191                 LOG.error("associateExternalNetworkWithVPN : networkId is null for the router ID {}", routerId);
 192                 return;
 193             }
 194             final String vpnName = network.getVpnid().getValue();
 195             if (vpnName == null) {
 196                 LOG.error("associateExternalNetworkWithVPN : No VPN associated with ext nw {} for router {}",
 197                         networkId, routerId);
 198                 return;
 199             }
 200
 201             BigInteger dpnId = new BigInteger("0");
 202             InstanceIdentifier<RouterToNaptSwitch> routerToNaptSwitch =
 203                 NatUtil.buildNaptSwitchRouterIdentifier(routerId.getValue());
 204             Optional<RouterToNaptSwitch> rtrToNapt =
 205                 MDSALUtil.read(dataBroker, LogicalDatastoreType.CONFIGURATION, routerToNaptSwitch);
 206             if (rtrToNapt.isPresent()) {
 207                 dpnId = rtrToNapt.get().getPrimarySwitchId();
 208             }
 209             LOG.debug("associateExternalNetworkWithVPN : got primarySwitch as dpnId{} ", dpnId);
 210             if (dpnId == null || dpnId.equals(BigInteger.ZERO)) {
 211                 LOG.warn("associateExternalNetworkWithVPN : primary napt Switch not found for router {} on dpn: {}",
 212                     routerId, dpnId);
 213                 return;
 214             }
 215
 216             Long routerIdentifier = NatUtil.getVpnId(dataBroker, routerId.getValue());
 217             InstanceIdentifierBuilder<org.opendaylight.yang.gen.v1.urn.opendaylight.netvirt.natservice
 218                 .rev160111.intext.ip.map.IpMapping> idBuilder =
 219                 InstanceIdentifier.builder(IntextIpMap.class)
 220                     .child(org.opendaylight.yang.gen.v1.urn.opendaylight.netvirt.natservice.rev160111
 221                         .intext.ip.map.IpMapping.class,
 222                         new org.opendaylight.yang.gen.v1.urn.opendaylight.netvirt.natservice.rev160111
 223                             .intext.ip.map.IpMappingKey(routerIdentifier));
 224             InstanceIdentifier<org.opendaylight.yang.gen.v1.urn.opendaylight.netvirt.natservice.rev160111
 225                 .intext.ip.map.IpMapping> id = idBuilder.build();
 226             Optional<org.opendaylight.yang.gen.v1.urn.opendaylight.netvirt.natservice.rev160111
 227                 .intext.ip.map.IpMapping> ipMapping = MDSALUtil.read(dataBroker, LogicalDatastoreType.OPERATIONAL, id);
 228             if (ipMapping.isPresent()) {
 229                 List<IpMap> ipMaps = ipMapping.get().getIpMap();
 230                 for (IpMap ipMap : ipMaps) {
 231                     String externalIp = ipMap.getExternalIp();
 232                     LOG.debug("associateExternalNetworkWithVPN : Calling advToBgpAndInstallFibAndTsFlows for dpnId {},"
 233                         + "vpnName {} and externalIp {}", dpnId, vpnName, externalIp);
 234                     if (natMode == NatMode.Controller) {
 235                         externalRouterListener.advToBgpAndInstallFibAndTsFlows(dpnId, NwConstants.INBOUND_NAPT_TABLE,
 236                                 vpnName, routerIdentifier, routerId.getValue(),
 237                                 externalIp, network.getId(), null /* external-router */,
 238                                 writeFlowInvTx);
 239                     }
 240                 }
 241             } else {
 242                 LOG.warn("associateExternalNetworkWithVPN : No ipMapping present fot the routerId {}", routerId);
 243             }
 244
 245             long vpnId = NatUtil.getVpnId(dataBroker, vpnName);
 246             // Install 47 entry to point to 21
 247             if (natMode == NatMode.Controller) {
 248                 externalRouterListener.installNaptPfibEntriesForExternalSubnets(routerId.getValue(), dpnId,
 249                         writeFlowInvTx);
 250                 if (vpnId != -1) {
 251                     LOG.debug("associateExternalNetworkWithVPN : Calling externalRouterListener installNaptPfibEntry "
 252                             + "for dpnId {} and vpnId {}", dpnId, vpnId);
 253                     externalRouterListener.installNaptPfibEntry(dpnId, vpnId, writeFlowInvTx);
 254                 }
 255             }
 256         }
 257
 258     }
 259
 260     private void disassociateExternalNetworkFromVPN(Networks network, String vpnName) {
 261         List<Uuid> routerIds = network.getRouterIds();
 262
 263         for (Uuid routerId : routerIds) {
 264             InstanceIdentifier<RouterPorts> routerPortsId = NatUtil.getRouterPortsId(routerId.getValue());
 265             Optional<RouterPorts> optRouterPorts = MDSALUtil.read(dataBroker, LogicalDatastoreType.CONFIGURATION,
 266                 routerPortsId);
 267             if (!optRouterPorts.isPresent()) {
 268                 LOG.debug("disassociateExternalNetworkFromVPN : Could not read Router Ports data object with id: {} "
 269                         + "to handle disassociate ext nw {}", routerId, network.getId());
 270                 continue;
 271             }
 272             RouterPorts routerPorts = optRouterPorts.get();
 273             List<Ports> interfaces = routerPorts.getPorts();
 274             try {
 275                 txRunner.callWithNewWriteOnlyTransactionAndSubmit(tx -> {
 276                     for (Ports port : interfaces) {
 277                         String portName = port.getPortName();
 278                         BigInteger dpnId = NatUtil.getDpnForInterface(interfaceManager, portName);
 279                         if (dpnId.equals(BigInteger.ZERO)) {
 280                             LOG.debug("disassociateExternalNetworkFromVPN : DPN not found for {},"
 281                                     + "skip handling of ext nw {} disassociation", portName, network.getId());
 282                             continue;
 283                         }
 284                         List<InternalToExternalPortMap> intExtPortMapList = port.getInternalToExternalPortMap();
 285                         for (InternalToExternalPortMap intExtPortMap : intExtPortMapList) {
 286                             floatingIpListener.removeNATFlowEntries(dpnId, portName, vpnName, routerId.getValue(),
 287                                     intExtPortMap, tx);
 288                         }
 289                     }
 290                 }).get();
 291             } catch (ExecutionException | InterruptedException e) {
 292                 LOG.error("Error writing to datastore {}", e);
 293             }
 294         }
 295     }
 296 }