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 static org.opendaylight.genius.infra.Datastore.CONFIGURATION;
  11
  12 import com.google.common.base.Optional;
  13 import java.math.BigInteger;
  14 import java.util.Collection;
  15 import java.util.Collections;
  16 import java.util.List;
  17 import java.util.concurrent.ExecutionException;
  18 import javax.annotation.PostConstruct;
  19 import javax.inject.Inject;
  20 import javax.inject.Singleton;
  21 import org.opendaylight.controller.md.sal.binding.api.DataBroker;
  22 import org.opendaylight.controller.md.sal.common.api.data.LogicalDatastoreType;
  23 import org.opendaylight.genius.datastoreutils.AsyncDataTreeChangeListenerBase;
  24 import org.opendaylight.genius.infra.Datastore.Configuration;
  25 import org.opendaylight.genius.infra.ManagedNewTransactionRunner;
  26 import org.opendaylight.genius.infra.ManagedNewTransactionRunnerImpl;
  27 import org.opendaylight.genius.infra.TypedReadWriteTransaction;
  28 import org.opendaylight.genius.mdsalutil.MDSALUtil;
  29 import org.opendaylight.genius.mdsalutil.NwConstants;
  30 import org.opendaylight.infrautils.jobcoordinator.JobCoordinator;
  31 import org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.yang.types.rev130715.Uuid;
  32 import org.opendaylight.yang.gen.v1.urn.opendaylight.genius.interfacemanager.rpcs.rev160406.OdlInterfaceRpcService;
  33 import org.opendaylight.yang.gen.v1.urn.opendaylight.netvirt.natservice.config.rev170206.NatserviceConfig;
  34 import org.opendaylight.yang.gen.v1.urn.opendaylight.netvirt.natservice.config.rev170206.NatserviceConfig.NatMode;
  35 import org.opendaylight.yang.gen.v1.urn.opendaylight.netvirt.natservice.rev160111.ExternalNetworks;
  36 import org.opendaylight.yang.gen.v1.urn.opendaylight.netvirt.natservice.rev160111.IntextIpMap;
  37 import org.opendaylight.yang.gen.v1.urn.opendaylight.netvirt.natservice.rev160111.external.networks.Networks;
  38 import org.opendaylight.yang.gen.v1.urn.opendaylight.netvirt.natservice.rev160111.floating.ip.info.RouterPorts;
  39 import org.opendaylight.yang.gen.v1.urn.opendaylight.netvirt.natservice.rev160111.floating.ip.info.router.ports.Ports;
  40 import org.opendaylight.yang.gen.v1.urn.opendaylight.netvirt.natservice.rev160111.floating.ip.info.router.ports.ports.InternalToExternalPortMap;
  41 import org.opendaylight.yang.gen.v1.urn.opendaylight.netvirt.natservice.rev160111.intext.ip.map.ip.mapping.IpMap;
  42 import org.opendaylight.yang.gen.v1.urn.opendaylight.netvirt.natservice.rev160111.napt.switches.RouterToNaptSwitch;
  43 import org.opendaylight.yangtools.yang.binding.InstanceIdentifier;
  44 import org.opendaylight.yangtools.yang.binding.InstanceIdentifier.InstanceIdentifierBuilder;
  45 import org.slf4j.Logger;
  46 import org.slf4j.LoggerFactory;
  47
  48 @Singleton
  49 public class ExternalNetworksChangeListener
  50         extends AsyncDataTreeChangeListenerBase<Networks, ExternalNetworksChangeListener> {
  51     private static final Logger LOG = LoggerFactory.getLogger(ExternalNetworksChangeListener.class);
  52     private final DataBroker dataBroker;
  53     private final ManagedNewTransactionRunner txRunner;
  54     private final FloatingIPListener floatingIpListener;
  55     private final ExternalRoutersListener externalRouterListener;
  56     private final OdlInterfaceRpcService interfaceManager;
  57     private final JobCoordinator coordinator;
  58     private final NatMode natMode;
  59
  60     @Inject
  61     public ExternalNetworksChangeListener(final DataBroker dataBroker, final FloatingIPListener floatingIpListener,
  62                                           final ExternalRoutersListener externalRouterListener,
  63                                           final OdlInterfaceRpcService interfaceManager,
  64                                           final NatserviceConfig config,
  65                                           final JobCoordinator coordinator) {
  66         super(Networks.class, ExternalNetworksChangeListener.class);
  67         this.dataBroker = dataBroker;
  68         this.txRunner = new ManagedNewTransactionRunnerImpl(dataBroker);
  69         this.floatingIpListener = floatingIpListener;
  70         this.externalRouterListener = externalRouterListener;
  71         this.interfaceManager = interfaceManager;
  72         this.coordinator = coordinator;
  73         if (config != null) {
  74             this.natMode = config.getNatMode();
  75         } else {
  76             this.natMode = NatMode.Controller;
  77         }
  78     }
  79
  80     @Override
  81     @PostConstruct
  82     public void init() {
  83         LOG.info("{} init", getClass().getSimpleName());
  84         registerListener(LogicalDatastoreType.CONFIGURATION, dataBroker);
  85     }
  86
  87     @Override
  88     protected InstanceIdentifier<Networks> getWildCardPath() {
  89         return InstanceIdentifier.create(ExternalNetworks.class).child(Networks.class);
  90     }
  91
  92     @Override
  93     protected void add(InstanceIdentifier<Networks> identifier, Networks networks) {
  94
  95     }
  96
  97     @Override
  98     protected ExternalNetworksChangeListener getDataTreeChangeListener() {
  99         return ExternalNetworksChangeListener.this;
 100     }
 101
 102     @Override
 103     protected void remove(InstanceIdentifier<Networks> identifier, Networks networks) {
 104         if (identifier == null || networks == null || networks.getRouterIds().isEmpty()) {
 105             LOG.warn("remove : returning without processing since networks/identifier is null: "
 106                 + "identifier: {}, networks: {}", identifier, networks);
 107             return;
 108         }
 109
 110         for (Uuid routerId: networks.getRouterIds()) {
 111             String routerName = routerId.toString();
 112
 113             InstanceIdentifier<RouterToNaptSwitch> routerToNaptSwitchInstanceIdentifier =
 114                     NatUtil.buildNaptSwitchIdentifier(routerName);
 115
 116             MDSALUtil.syncDelete(dataBroker, LogicalDatastoreType.OPERATIONAL, routerToNaptSwitchInstanceIdentifier);
 117
 118             LOG.debug("remove : successful deletion of data in napt-switches container");
 119         }
 120     }
 121
 122     @Override
 123     protected void update(InstanceIdentifier<Networks> identifier, Networks original, Networks update) {
 124         //Check for VPN disassociation
 125         Uuid originalVpn = original.getVpnid();
 126         Uuid updatedVpn = update.getVpnid();
 127         coordinator.enqueueJob(NatConstants.NAT_DJC_PREFIX + update.key(),
 128             () -> Collections.singletonList(txRunner.callWithNewReadWriteTransactionAndSubmit(CONFIGURATION, tx -> {
 129                 if (originalVpn == null && updatedVpn != null) {
 130                     //external network is dis-associated from L3VPN instance
 131                     associateExternalNetworkWithVPN(update, tx);
 132                 } else if (originalVpn != null && updatedVpn == null) {
 133                     //external network is associated with vpn
 134                     disassociateExternalNetworkFromVPN(update, originalVpn.getValue());
 135                     //Remove the SNAT entries
 136                     removeSnatEntries(original, original.getId(), tx);
 137                 }
 138             })), NatConstants.NAT_DJC_MAX_RETRIES);
 139     }
 140
 141     private void removeSnatEntries(Networks original, Uuid networkUuid,
 142         TypedReadWriteTransaction<Configuration> writeFlowInvTx) {
 143         List<Uuid> routerUuids = original.getRouterIds();
 144         for (Uuid routerUuid : routerUuids) {
 145             Long routerId = NatUtil.getVpnId(dataBroker, routerUuid.getValue());
 146             if (routerId == NatConstants.INVALID_ID) {
 147                 LOG.error("removeSnatEntries : Invalid routerId returned for routerName {}", routerUuid.getValue());
 148                 return;
 149             }
 150             Collection<String> externalIps = NatUtil.getExternalIpsForRouter(dataBroker,routerId);
 151             if (natMode == NatMode.Controller) {
 152                 externalRouterListener.handleDisableSnatInternetVpn(routerUuid.getValue(), routerId, networkUuid,
 153                         externalIps, original.getVpnid().getValue(), writeFlowInvTx);
 154             }
 155         }
 156     }
 157
 158     private void associateExternalNetworkWithVPN(Networks network, TypedReadWriteTransaction<Configuration> confTx)
 159             throws ExecutionException, InterruptedException {
 160         List<Uuid> routerIds = network.getRouterIds();
 161         for (Uuid routerId : routerIds) {
 162             //long router = NatUtil.getVpnId(dataBroker, routerId.getValue());
 163
 164             InstanceIdentifier<RouterPorts> routerPortsId = NatUtil.getRouterPortsId(routerId.getValue());
 165             Optional<RouterPorts> optRouterPorts = MDSALUtil.read(dataBroker, LogicalDatastoreType.CONFIGURATION,
 166                 routerPortsId);
 167             if (!optRouterPorts.isPresent()) {
 168                 LOG.debug("associateExternalNetworkWithVPN : Could not read Router Ports data object with id: {} "
 169                         + "to handle associate ext nw {}", routerId, network.getId());
 170                 continue;
 171             }
 172             RouterPorts routerPorts = optRouterPorts.get();
 173             List<Ports> interfaces = routerPorts.getPorts();
 174             for (Ports port : interfaces) {
 175                 String portName = port.getPortName();
 176                 BigInteger dpnId = NatUtil.getDpnForInterface(interfaceManager, portName);
 177                 if (dpnId.equals(BigInteger.ZERO)) {
 178                     LOG.debug("associateExternalNetworkWithVPN : DPN not found for {}, "
 179                             + "skip handling of ext nw {} association", portName, network.getId());
 180                     continue;
 181                 }
 182                 List<InternalToExternalPortMap> intExtPortMapList = port.getInternalToExternalPortMap();
 183                 for (InternalToExternalPortMap ipMap : intExtPortMapList) {
 184                     //remove all VPN related entries
 185                     floatingIpListener.createNATFlowEntries(dpnId, portName, routerId.getValue(), network.getId(),
 186                             ipMap, confTx);
 187                 }
 188             }
 189         }
 190
 191         // SNAT
 192         for (Uuid routerId : routerIds) {
 193             LOG.debug("associateExternalNetworkWithVPN() : for routerId {}",  routerId);
 194             Uuid networkId = network.getId();
 195             if (networkId == null) {
 196                 LOG.error("associateExternalNetworkWithVPN : networkId is null for the router ID {}", routerId);
 197                 return;
 198             }
 199             final String vpnName = network.getVpnid().getValue();
 200             if (vpnName == null) {
 201                 LOG.error("associateExternalNetworkWithVPN : No VPN associated with ext nw {} for router {}",
 202                         networkId, routerId);
 203                 return;
 204             }
 205
 206             BigInteger dpnId = new BigInteger("0");
 207             InstanceIdentifier<RouterToNaptSwitch> routerToNaptSwitch =
 208                 NatUtil.buildNaptSwitchRouterIdentifier(routerId.getValue());
 209             Optional<RouterToNaptSwitch> rtrToNapt =
 210                 MDSALUtil.read(dataBroker, LogicalDatastoreType.CONFIGURATION, routerToNaptSwitch);
 211             if (rtrToNapt.isPresent()) {
 212                 dpnId = rtrToNapt.get().getPrimarySwitchId();
 213             }
 214             LOG.debug("associateExternalNetworkWithVPN : got primarySwitch as dpnId{} ", dpnId);
 215             if (dpnId == null || dpnId.equals(BigInteger.ZERO)) {
 216                 LOG.warn("associateExternalNetworkWithVPN : primary napt Switch not found for router {} on dpn: {}",
 217                     routerId, dpnId);
 218                 return;
 219             }
 220
 221             Long routerIdentifier = NatUtil.getVpnId(dataBroker, routerId.getValue());
 222             InstanceIdentifierBuilder<org.opendaylight.yang.gen.v1.urn.opendaylight.netvirt.natservice
 223                 .rev160111.intext.ip.map.IpMapping> idBuilder =
 224                 InstanceIdentifier.builder(IntextIpMap.class)
 225                     .child(org.opendaylight.yang.gen.v1.urn.opendaylight.netvirt.natservice.rev160111
 226                         .intext.ip.map.IpMapping.class,
 227                         new org.opendaylight.yang.gen.v1.urn.opendaylight.netvirt.natservice.rev160111
 228                             .intext.ip.map.IpMappingKey(routerIdentifier));
 229             InstanceIdentifier<org.opendaylight.yang.gen.v1.urn.opendaylight.netvirt.natservice.rev160111
 230                 .intext.ip.map.IpMapping> id = idBuilder.build();
 231             Optional<org.opendaylight.yang.gen.v1.urn.opendaylight.netvirt.natservice.rev160111
 232                 .intext.ip.map.IpMapping> ipMapping = MDSALUtil.read(dataBroker, LogicalDatastoreType.OPERATIONAL, id);
 233             if (ipMapping.isPresent()) {
 234                 List<IpMap> ipMaps = ipMapping.get().getIpMap();
 235                 for (IpMap ipMap : ipMaps) {
 236                     String externalIp = ipMap.getExternalIp();
 237                     LOG.debug("associateExternalNetworkWithVPN : Calling advToBgpAndInstallFibAndTsFlows for dpnId {},"
 238                         + "vpnName {} and externalIp {}", dpnId, vpnName, externalIp);
 239                     if (natMode == NatMode.Controller) {
 240                         externalRouterListener.advToBgpAndInstallFibAndTsFlows(dpnId, NwConstants.INBOUND_NAPT_TABLE,
 241                                 vpnName, routerIdentifier, routerId.getValue(),
 242                                 externalIp, network.getId(), null /* external-router */,
 243                                 confTx);
 244                     }
 245                 }
 246             } else {
 247                 LOG.warn("associateExternalNetworkWithVPN : No ipMapping present fot the routerId {}", routerId);
 248             }
 249
 250             long vpnId = NatUtil.getVpnId(dataBroker, vpnName);
 251             // Install 47 entry to point to 21
 252             if (natMode == NatMode.Controller) {
 253                 externalRouterListener.installNaptPfibEntriesForExternalSubnets(routerId.getValue(), dpnId,
 254                         confTx);
 255                 if (vpnId != -1) {
 256                     LOG.debug("associateExternalNetworkWithVPN : Calling externalRouterListener installNaptPfibEntry "
 257                             + "for dpnId {} and vpnId {}", dpnId, vpnId);
 258                     externalRouterListener.installNaptPfibEntry(dpnId, vpnId, confTx);
 259                 }
 260             }
 261         }
 262
 263     }
 264
 265     private void disassociateExternalNetworkFromVPN(Networks network, String vpnName) {
 266         List<Uuid> routerIds = network.getRouterIds();
 267
 268         for (Uuid routerId : routerIds) {
 269             InstanceIdentifier<RouterPorts> routerPortsId = NatUtil.getRouterPortsId(routerId.getValue());
 270             Optional<RouterPorts> optRouterPorts = MDSALUtil.read(dataBroker, LogicalDatastoreType.CONFIGURATION,
 271                 routerPortsId);
 272             if (!optRouterPorts.isPresent()) {
 273                 LOG.debug("disassociateExternalNetworkFromVPN : Could not read Router Ports data object with id: {} "
 274                         + "to handle disassociate ext nw {}", routerId, network.getId());
 275                 continue;
 276             }
 277             RouterPorts routerPorts = optRouterPorts.get();
 278             List<Ports> interfaces = routerPorts.getPorts();
 279             try {
 280                 txRunner.callWithNewReadWriteTransactionAndSubmit(CONFIGURATION, tx -> {
 281                     for (Ports port : interfaces) {
 282                         String portName = port.getPortName();
 283                         BigInteger dpnId = NatUtil.getDpnForInterface(interfaceManager, portName);
 284                         if (dpnId.equals(BigInteger.ZERO)) {
 285                             LOG.debug("disassociateExternalNetworkFromVPN : DPN not found for {},"
 286                                     + "skip handling of ext nw {} disassociation", portName, network.getId());
 287                             continue;
 288                         }
 289                         List<InternalToExternalPortMap> intExtPortMapList = port.getInternalToExternalPortMap();
 290                         for (InternalToExternalPortMap intExtPortMap : intExtPortMapList) {
 291                             floatingIpListener.removeNATFlowEntries(dpnId, portName, vpnName, routerId.getValue(),
 292                                     intExtPortMap, tx);
 293                         }
 294                     }
 295                 }).get();
 296             } catch (ExecutionException | InterruptedException e) {
 297                 LOG.error("Error writing to datastore {}", e);
 298             }
 299         }
 300     }
 301 }