git.opendaylight Code Review - netvirt.git/blob

   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 io.netty.util.concurrent.GlobalEventExecutor;
  11
  12 import org.opendaylight.controller.config.api.osgi.WaitingServiceTracker;
  13 import org.opendaylight.controller.md.sal.binding.api.DataBroker;
  14 import org.opendaylight.controller.md.sal.binding.api.DataChangeListener;
  15 import org.opendaylight.controller.md.sal.common.api.data.AsyncDataBroker;
  16 import org.opendaylight.controller.md.sal.common.api.data.LogicalDatastoreType;
  17 import org.opendaylight.genius.mdsalutil.AbstractDataChangeListener;
  18 import org.opendaylight.genius.mdsalutil.ActionInfo;
  19 import org.opendaylight.genius.mdsalutil.ActionType;
  20 import org.opendaylight.genius.mdsalutil.FlowEntity;
  21 import org.opendaylight.genius.mdsalutil.InstructionInfo;
  22 import org.opendaylight.genius.mdsalutil.InstructionType;
  23 import org.opendaylight.genius.mdsalutil.MatchFieldType;
  24 import org.opendaylight.genius.mdsalutil.MatchInfo;
  25 import org.opendaylight.genius.mdsalutil.MDSALUtil;
  26 import org.opendaylight.genius.mdsalutil.MetaDataUtil;
  27 import org.opendaylight.genius.mdsalutil.NwConstants;
  28 import org.opendaylight.genius.mdsalutil.interfaces.IMdsalApiManager;
  29 import org.opendaylight.yang.gen.v1.urn.opendaylight.netvirt.natservice.rev160111.FloatingIpInfo;
  30 import org.opendaylight.yang.gen.v1.urn.opendaylight.netvirt.natservice.rev160111.floating.ip.info.RouterPorts;
  31 import org.opendaylight.yang.gen.v1.urn.opendaylight.netvirt.natservice.rev160111.floating.ip.info.router.ports.Ports;
  32 import org.opendaylight.yang.gen.v1.urn.opendaylight.netvirt.natservice.rev160111.floating.ip.info.router.ports.PortsBuilder;
  33 import org.opendaylight.yang.gen.v1.urn.opendaylight.netvirt.natservice.rev160111.floating.ip.info.router.ports.PortsKey;
  34 import org.opendaylight.yang.gen.v1.urn.opendaylight.netvirt.natservice.rev160111.floating.ip.info.router.ports.ports.IpMapping;
  35 import org.opendaylight.yang.gen.v1.urn.opendaylight.netvirt.natservice.rev160111.floating.ip.info.router.ports.ports.IpMappingBuilder;
  36 import org.opendaylight.yang.gen.v1.urn.opendaylight.netvirt.natservice.rev160111.floating.ip.info.router.ports.ports.IpMappingKey;
  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.external.networks.NetworksKey;
  39 import org.opendaylight.yang.gen.v1.urn.opendaylight.netvirt.natservice.rev160111.ExternalNetworks;
  40 import org.opendaylight.yang.gen.v1.urn.opendaylight.neutron.ports.rev150712.ports.attributes.ports.Port;
  41 import org.opendaylight.yangtools.concepts.ListenerRegistration;
  42 import org.opendaylight.yangtools.yang.binding.InstanceIdentifier;
  43 import org.osgi.framework.BundleContext;
  44 import org.slf4j.Logger;
  45 import org.slf4j.LoggerFactory;
  46 import org.opendaylight.yang.gen.v1.urn.opendaylight.genius.idmanager.rev160406.IdManagerService;
  47 import org.opendaylight.yang.gen.v1.urn.opendaylight.genius.interfacemanager.rpcs.rev160406.OdlInterfaceRpcService;
  48 import org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.inet.types.rev130715.IpAddress;
  49 import org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.inet.types.rev130715.Ipv4Address;
  50 import org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.yang.types.rev130715.Uuid;
  51
  52 import com.google.common.base.Optional;
  53
  54 import java.math.BigInteger;
  55 import java.net.InetAddress;
  56 import java.net.UnknownHostException;
  57 import java.util.ArrayList;
  58 import java.util.List;
  59
  60 public class FloatingIPListener extends AbstractDataChangeListener<IpMapping> implements AutoCloseable{
  61     private static final Logger LOG = LoggerFactory.getLogger(FloatingIPListener.class);
  62     private ListenerRegistration<DataChangeListener> listenerRegistration;
  63     private final DataBroker dataBroker;
  64     private final IMdsalApiManager mdsalManager;
  65     private final OdlInterfaceRpcService interfaceManager;
  66     private final IdManagerService idManager;
  67     private FloatingIPHandler floatingIPHandler;
  68
  69
  70     public FloatingIPListener(final DataBroker dataBroker, final IMdsalApiManager mdsalManager,
  71                               final OdlInterfaceRpcService interfaceManager,
  72                               final IdManagerService idManager,
  73                               final BundleContext bundleContext) {
  74         super(IpMapping.class);
  75         this.dataBroker = dataBroker;
  76         this.mdsalManager = mdsalManager;
  77         this.interfaceManager = interfaceManager;
  78         this.idManager = idManager;
  79
  80         GlobalEventExecutor.INSTANCE.execute(new Runnable() {
  81             @Override
  82             public void run() {
  83                 final WaitingServiceTracker<FloatingIPHandler> tracker = WaitingServiceTracker.create(
  84                         FloatingIPHandler.class, bundleContext);
  85                 floatingIPHandler = tracker.waitForService(WaitingServiceTracker.FIVE_MINUTES);
  86                 LOG.info("FloatingIPListener initialized. FloatingIPHandler={}", floatingIPHandler);
  87             }
  88         });
  89     }
  90
  91     public void init() {
  92         LOG.info("{} init", getClass().getSimpleName());
  93         listenerRegistration = dataBroker.registerDataChangeListener(LogicalDatastoreType.CONFIGURATION,
  94                 getWildCardPath(), this, AsyncDataBroker.DataChangeScope.SUBTREE);
  95     }
  96
  97     private InstanceIdentifier<IpMapping> getWildCardPath() {
  98         return InstanceIdentifier.create(FloatingIpInfo.class).child(RouterPorts.class).child(Ports.class)
  99                 .child(IpMapping.class);
 100     }
 101
 102     @Override
 103     public void close() throws Exception {
 104         if (listenerRegistration != null) {
 105             listenerRegistration.close();
 106             listenerRegistration = null;
 107         }
 108         LOG.info("{} close", getClass().getSimpleName());
 109     }
 110
 111     @Override
 112     protected void add(final InstanceIdentifier<IpMapping> identifier,
 113                        final IpMapping mapping) {
 114         LOG.trace("FloatingIPListener add ip mapping method - key: " + identifier + ", value=" + mapping );
 115         processFloatingIPAdd(identifier, mapping);
 116     }
 117
 118     @Override
 119     protected void remove(InstanceIdentifier<IpMapping> identifier, IpMapping mapping) {
 120         LOG.trace("FloatingIPListener remove ip mapping method - key: " + identifier + ", value=" + mapping );
 121         processFloatingIPDel(identifier, mapping);
 122     }
 123
 124     @Override
 125     protected void update(InstanceIdentifier<IpMapping> identifier, IpMapping original, IpMapping update) {
 126         LOG.trace("FloatingIPListener update ip mapping method - key: " + identifier + ", original=" + original + ", update=" + update );
 127     }
 128
 129     private FlowEntity buildPreDNATFlowEntity(BigInteger dpId, String internalIp, String externalIp, long routerId, long vpnId, long associatedVpn) {
 130         LOG.info("Bulding DNAT Flow entity for ip {} ", externalIp);
 131
 132         long segmentId = (associatedVpn == NatConstants.INVALID_ID) ? routerId : associatedVpn;
 133         LOG.debug("Segment id {} in build preDNAT Flow", segmentId);
 134
 135         List<MatchInfo> matches = new ArrayList<>();
 136         matches.add(new MatchInfo(MatchFieldType.eth_type,
 137                 new long[] { 0x0800L }));
 138
 139         matches.add(new MatchInfo(MatchFieldType.ipv4_destination, new String[] {
 140                 externalIp, "32" }));
 141
 142 //        matches.add(new MatchInfo(MatchFieldType.metadata, new BigInteger[] {
 143 //                BigInteger.valueOf(vpnId), MetaDataUtil.METADATA_MASK_VRFID }));
 144
 145         List<ActionInfo> actionsInfos = new ArrayList<>();
 146         actionsInfos.add(new ActionInfo(ActionType.set_destination_ip, new String[]{ internalIp, "32" }));
 147
 148         List<InstructionInfo> instructions = new ArrayList<>();
 149         instructions.add(new InstructionInfo(InstructionType.write_metadata,
 150                 new BigInteger[] { MetaDataUtil.getVpnIdMetadata(segmentId), MetaDataUtil.METADATA_MASK_VRFID }));
 151         instructions.add(new InstructionInfo(InstructionType.apply_actions, actionsInfos));
 152         instructions.add(new InstructionInfo(InstructionType.goto_table, new long[] { NwConstants.DNAT_TABLE }));
 153
 154         String flowRef = NatUtil.getFlowRef(dpId, NwConstants.PDNAT_TABLE, routerId, externalIp);
 155
 156         FlowEntity flowEntity = MDSALUtil.buildFlowEntity(dpId, NwConstants.PDNAT_TABLE, flowRef,
 157                 NatConstants.DEFAULT_DNAT_FLOW_PRIORITY, flowRef, 0, 0,
 158                 NwConstants.COOKIE_DNAT_TABLE, matches, instructions);
 159
 160         return flowEntity;
 161     }
 162
 163     private FlowEntity buildDNATFlowEntity(BigInteger dpId, String internalIp, String externalIp, long routerId, long associatedVpn) {
 164
 165         LOG.info("Bulding DNAT Flow entity for ip {} ", externalIp);
 166
 167         long segmentId = (associatedVpn == NatConstants.INVALID_ID) ? routerId : associatedVpn;
 168         LOG.debug("Segment id {} in build DNAT", segmentId);
 169
 170         List<MatchInfo> matches = new ArrayList<>();
 171         matches.add(new MatchInfo(MatchFieldType.metadata, new BigInteger[] {
 172                 MetaDataUtil.getVpnIdMetadata(segmentId), MetaDataUtil.METADATA_MASK_VRFID }));
 173
 174         matches.add(new MatchInfo(MatchFieldType.eth_type,
 175                 new long[] { 0x0800L }));
 176
 177         matches.add(new MatchInfo(MatchFieldType.ipv4_destination, new String[] {
 178         //        externalIp, "32" }));
 179                   internalIp, "32" }));
 180
 181         List<ActionInfo> actionsInfos = new ArrayList<>();
 182 //        actionsInfos.add(new ActionInfo(ActionType.set_destination_ip, new String[]{ internalIp, "32" }));
 183
 184         List<InstructionInfo> instructions = new ArrayList<>();
 185 //        instructions.add(new InstructionInfo(InstructionType.write_metadata, new BigInteger[] { BigInteger.valueOf
 186 //                (routerId), MetaDataUtil.METADATA_MASK_VRFID }));
 187         actionsInfos.add(new ActionInfo(ActionType.nx_resubmit, new String[] { Integer.toString(NwConstants.L3_FIB_TABLE) }));
 188         instructions.add(new InstructionInfo(InstructionType.apply_actions, actionsInfos));
 189         //instructions.add(new InstructionInfo(InstructionType.goto_table, new long[] { NatConstants.L3_FIB_TABLE }));
 190
 191         String flowRef = NatUtil.getFlowRef(dpId, NwConstants.DNAT_TABLE, routerId, externalIp);
 192
 193         FlowEntity flowEntity = MDSALUtil.buildFlowEntity(dpId, NwConstants.DNAT_TABLE, flowRef,
 194                 NatConstants.DEFAULT_DNAT_FLOW_PRIORITY, flowRef, 0, 0,
 195                 NwConstants.COOKIE_DNAT_TABLE, matches, instructions);
 196
 197         return flowEntity;
 198
 199     }
 200
 201     private FlowEntity buildPreSNATFlowEntity(BigInteger dpId, String internalIp, String externalIp, long vpnId, long routerId, long associatedVpn) {
 202
 203         LOG.info("Building PSNAT Flow entity for ip {} ", internalIp);
 204
 205         long segmentId = (associatedVpn == NatConstants.INVALID_ID) ? routerId : associatedVpn;
 206
 207         LOG.debug("Segment id {} in build preSNAT flow", segmentId);
 208
 209         List<MatchInfo> matches = new ArrayList<>();
 210         matches.add(new MatchInfo(MatchFieldType.eth_type,
 211                 new long[] { 0x0800L }));
 212
 213         matches.add(new MatchInfo(MatchFieldType.ipv4_source, new String[] {
 214                 internalIp, "32" }));
 215
 216         matches.add(new MatchInfo(MatchFieldType.metadata, new BigInteger[] {
 217                 MetaDataUtil.getVpnIdMetadata(segmentId), MetaDataUtil.METADATA_MASK_VRFID }));
 218
 219         List<ActionInfo> actionsInfos = new ArrayList<>();
 220         actionsInfos.add(new ActionInfo(ActionType.set_source_ip, new String[]{ externalIp, "32" }));
 221
 222         List<InstructionInfo> instructions = new ArrayList<>();
 223         instructions.add(new InstructionInfo(InstructionType.write_metadata,
 224                 new BigInteger[] { MetaDataUtil.getVpnIdMetadata(vpnId), MetaDataUtil.METADATA_MASK_VRFID }));
 225         instructions.add(new InstructionInfo(InstructionType.apply_actions, actionsInfos));
 226         instructions.add(new InstructionInfo(InstructionType.goto_table, new long[] { NwConstants.SNAT_TABLE }));
 227
 228         String flowRef = NatUtil.getFlowRef(dpId, NwConstants.PSNAT_TABLE, routerId, internalIp);
 229
 230         FlowEntity flowEntity = MDSALUtil.buildFlowEntity(dpId, NwConstants.PSNAT_TABLE, flowRef,
 231                 NatConstants.DEFAULT_DNAT_FLOW_PRIORITY, flowRef, 0, 0,
 232                 NwConstants.COOKIE_DNAT_TABLE, matches, instructions);
 233
 234         return flowEntity;
 235     }
 236
 237     private FlowEntity buildSNATFlowEntity(BigInteger dpId, String internalIp, String externalIp, long vpnId) {
 238         LOG.info("Building SNAT Flow entity for ip {} ", internalIp);
 239
 240         List<MatchInfo> matches = new ArrayList<>();
 241         matches.add(new MatchInfo(MatchFieldType.metadata, new BigInteger[] {
 242                 MetaDataUtil.getVpnIdMetadata(vpnId), MetaDataUtil.METADATA_MASK_VRFID }));
 243
 244         matches.add(new MatchInfo(MatchFieldType.eth_type,
 245                 new long[] { 0x0800L }));
 246
 247         matches.add(new MatchInfo(MatchFieldType.ipv4_source, new String[] {
 248                   externalIp, "32" }));
 249
 250         List<ActionInfo> actionsInfo = new ArrayList<>();
 251         List<InstructionInfo> instructions = new ArrayList<InstructionInfo>();
 252
 253         IpAddress externalIpv4Address = new IpAddress(new Ipv4Address(externalIp));
 254         Port port = NatUtil.getNeutronPortForFloatingIp(dataBroker, externalIpv4Address);
 255         if (port != null && port.getMacAddress() != null) {
 256             actionsInfo.add(new ActionInfo(ActionType.set_field_eth_src, new String[] { port.getMacAddress().getValue() }));
 257         } else {
 258             LOG.warn("No MAC address found for floating IP {}", externalIp);
 259         }
 260
 261         Uuid subnetId = NatUtil.getSubnetIdForFloatingIp(port, externalIpv4Address);
 262         if (subnetId != null) {
 263             long groupId = NatUtil.createGroupId(NatUtil.getGroupIdKey(subnetId.getValue()), idManager);
 264             actionsInfo.add(new ActionInfo(ActionType.group, new String[] {String.valueOf(groupId)}));
 265         } else {
 266             LOG.warn("No neutron Subnet found for floating IP {}", externalIp);
 267         }
 268
 269         instructions.add(new InstructionInfo(InstructionType.apply_actions, actionsInfo));
 270         String flowRef = NatUtil.getFlowRef(dpId, NwConstants.SNAT_TABLE, vpnId, internalIp);
 271
 272         FlowEntity flowEntity = MDSALUtil.buildFlowEntity(dpId, NwConstants.SNAT_TABLE, flowRef,
 273                 NatConstants.DEFAULT_DNAT_FLOW_PRIORITY, flowRef, 0, 0,
 274                 NwConstants.COOKIE_DNAT_TABLE, matches, instructions);
 275
 276         return flowEntity;
 277     }
 278
 279     private void createDNATTblEntry(BigInteger dpnId, String internalIp, String externalIp, long routerId, long vpnId, long associatedVpnId) {
 280         FlowEntity pFlowEntity = buildPreDNATFlowEntity(dpnId, internalIp, externalIp, routerId, vpnId, associatedVpnId );
 281         mdsalManager.installFlow(pFlowEntity);
 282
 283         FlowEntity flowEntity = buildDNATFlowEntity(dpnId, internalIp, externalIp, routerId, associatedVpnId);
 284         mdsalManager.installFlow(flowEntity);
 285     }
 286
 287     private void removeDNATTblEntry(BigInteger dpnId, String internalIp, String externalIp, long routerId) {
 288         FlowEntity pFlowEntity = buildPreDNATDeleteFlowEntity(dpnId, internalIp, externalIp, routerId );
 289         mdsalManager.removeFlow(pFlowEntity);
 290
 291         FlowEntity flowEntity = buildDNATDeleteFlowEntity(dpnId, internalIp, externalIp, routerId);
 292         mdsalManager.removeFlow(flowEntity);
 293     }
 294
 295     private void createSNATTblEntry(BigInteger dpnId, String internalIp, String externalIp, long vpnId, long routerId, long associatedVpnId) {
 296         FlowEntity pFlowEntity = buildPreSNATFlowEntity(dpnId, internalIp, externalIp, vpnId , routerId, associatedVpnId);
 297         mdsalManager.installFlow(pFlowEntity);
 298
 299         FlowEntity flowEntity = buildSNATFlowEntity(dpnId, internalIp, externalIp, vpnId);
 300         mdsalManager.installFlow(flowEntity);
 301
 302     }
 303
 304     private void removeSNATTblEntry(BigInteger dpnId, String internalIp, long routerId, String externalIp, long vpnId) {
 305         FlowEntity pFlowEntity = buildPreSNATDeleteFlowEntity(dpnId, internalIp, routerId, externalIp);
 306         mdsalManager.removeFlow(pFlowEntity);
 307
 308         FlowEntity flowEntity = buildSNATDeleteFlowEntity(dpnId, internalIp, vpnId, externalIp);
 309         mdsalManager.removeFlow(flowEntity);
 310
 311     }
 312
 313     private Uuid getExtNetworkId(final InstanceIdentifier<RouterPorts> pIdentifier, LogicalDatastoreType dataStoreType) {
 314         Optional<RouterPorts> rtrPort = NatUtil.read(dataBroker, dataStoreType, pIdentifier);
 315         if(!rtrPort.isPresent()) {
 316             LOG.error("Unable to read router port entry for {}", pIdentifier);
 317             return null;
 318         }
 319
 320         Uuid extNwId = rtrPort.get().getExternalNetworkId();
 321         return extNwId;
 322     }
 323
 324     private long getVpnId(Uuid extNwId) {
 325         InstanceIdentifier<Networks> nwId = InstanceIdentifier.builder(ExternalNetworks.class).child(Networks.class, new NetworksKey(extNwId)).build();
 326         Optional<Networks> nw = NatUtil.read(dataBroker, LogicalDatastoreType.CONFIGURATION, nwId);
 327         if(!nw.isPresent()) {
 328             LOG.error("Unable to read external network for {}", extNwId);
 329             return NatConstants.INVALID_ID;
 330         }
 331
 332         Uuid vpnUuid = nw.get().getVpnid();
 333         if(vpnUuid == null) {
 334             return NatConstants.INVALID_ID;
 335         }
 336
 337         //Get the id using the VPN UUID (also vpn instance name)
 338         return NatUtil.readVpnId(dataBroker, vpnUuid.getValue());
 339     }
 340
 341     private void processFloatingIPAdd(final InstanceIdentifier<IpMapping> identifier,
 342                                       final IpMapping mapping) {
 343         LOG.trace("Add event - key: {}, value: {}", identifier, mapping);
 344
 345         final String routerId = identifier.firstKeyOf(RouterPorts.class).getRouterId();
 346         final PortsKey pKey = identifier.firstKeyOf(Ports.class);
 347         String interfaceName = pKey.getPortName();
 348
 349         InstanceIdentifier<RouterPorts> pIdentifier = identifier.firstIdentifierOf(RouterPorts.class);
 350         createNATFlowEntries(interfaceName, mapping, pIdentifier, routerId);
 351     }
 352
 353     private void processFloatingIPDel(final InstanceIdentifier<IpMapping> identifier,
 354                                       final IpMapping mapping) {
 355         LOG.trace("Del event - key: {}, value: {}", identifier, mapping);
 356
 357         final String routerId = identifier.firstKeyOf(RouterPorts.class).getRouterId();
 358         final PortsKey pKey = identifier.firstKeyOf(Ports.class);
 359         String interfaceName = pKey.getPortName();
 360
 361         InstanceIdentifier<RouterPorts> pIdentifier = identifier.firstIdentifierOf(RouterPorts.class);
 362         removeNATFlowEntries(interfaceName, mapping, pIdentifier, routerId);
 363     }
 364
 365     private InetAddress getInetAddress(String ipAddr) {
 366         InetAddress ipAddress = null;
 367         try {
 368             ipAddress = InetAddress.getByName(ipAddr);
 369         } catch (UnknownHostException e) {
 370             LOG.error("UnknowHostException for ip {}", ipAddr);
 371         }
 372         return ipAddress;
 373     }
 374
 375     private boolean validateIpMapping(IpMapping mapping) {
 376         return getInetAddress(mapping.getInternalIp()) != null &&
 377                     getInetAddress(mapping.getExternalIp()) != null;
 378     }
 379
 380     void createNATFlowEntries(String interfaceName, final IpMapping mapping,
 381                               final InstanceIdentifier<RouterPorts> pIdentifier, final String routerName) {
 382         if(!validateIpMapping(mapping)) {
 383             LOG.warn("Not a valid ip addresses in the mapping {}", mapping);
 384             return;
 385         }
 386
 387         //Get the DPN on which this interface resides
 388         BigInteger dpnId = NatUtil.getDpnForInterface(interfaceManager, interfaceName);
 389
 390         if(dpnId.equals(BigInteger.ZERO)) {
 391              LOG.error("No DPN for interface {}. NAT flow entries for ip mapping {} will not be installed",
 392                      interfaceName, mapping);
 393              return;
 394         }
 395
 396         long routerId = NatUtil.getVpnId(dataBroker, routerName);
 397         if(routerId == NatConstants.INVALID_ID) {
 398             LOG.warn("Could not retrieve router id for {} to create NAT Flow entries", routerName);
 399             return;
 400         }
 401         //Check if the router to vpn association is present
 402         //long associatedVpnId = NatUtil.getAssociatedVpn(dataBroker, routerName);
 403         Uuid associatedVpn = NatUtil.getVpnForRouter(dataBroker, routerName);
 404         long associatedVpnId = NatConstants.INVALID_ID;
 405         if(associatedVpn == null) {
 406             LOG.debug("Router {} is not assicated with any BGP VPN instance", routerName);
 407         } else {
 408             LOG.debug("Router {} is associated with VPN Instance with Id {}", routerName, associatedVpn);
 409             associatedVpnId = NatUtil.getVpnId(dataBroker, associatedVpn.getValue());
 410             LOG.debug("vpninstance Id is {} for VPN {}", associatedVpnId, associatedVpn);
 411             //routerId = associatedVpnId;
 412         }
 413
 414         Uuid extNwId = getExtNetworkId(pIdentifier, LogicalDatastoreType.CONFIGURATION);
 415         if(extNwId == null) {
 416             LOG.error("External network associated with interface {} could not be retrieved", interfaceName);
 417             LOG.error("NAT flow entries will not be installed {}", mapping);
 418             return;
 419         }
 420         long vpnId = getVpnId(extNwId);
 421         if(vpnId < 0) {
 422             LOG.error("No VPN associated with Ext nw {}. Unable to create SNAT table entry for fixed ip {}",
 423                     extNwId, mapping.getInternalIp());
 424             return;
 425         }
 426
 427         //Create the DNAT and SNAT table entries
 428         createDNATTblEntry(dpnId, mapping.getInternalIp(), mapping.getExternalIp(), routerId, vpnId, associatedVpnId);
 429
 430
 431         createSNATTblEntry(dpnId, mapping.getInternalIp(), mapping.getExternalIp(), vpnId, routerId, associatedVpnId);
 432
 433         floatingIPHandler.onAddFloatingIp(dpnId, routerName, extNwId, interfaceName, mapping.getExternalIp(), mapping
 434                 .getInternalIp());
 435     }
 436
 437     void createNATFlowEntries(BigInteger dpnId,  String interfaceName, String routerName, Uuid externalNetworkId, String internalIp, String externalIp) {
 438         long routerId = NatUtil.getVpnId(dataBroker, routerName);
 439         if(routerId == NatConstants.INVALID_ID) {
 440             LOG.warn("Could not retrieve router id for {} to create NAT Flow entries", routerName);
 441             return;
 442         }
 443         //Check if the router to vpn association is present
 444         long associatedVpnId = NatUtil.getAssociatedVpn(dataBroker, routerName);
 445         if(associatedVpnId == NatConstants.INVALID_ID) {
 446             LOG.debug("Router {} is not assicated with any BGP VPN instance", routerName);
 447         } else {
 448             LOG.debug("Router {} is associated with VPN Instance with Id {}", routerName, associatedVpnId);
 449             //routerId = associatedVpnId;
 450         }
 451
 452         long vpnId = getVpnId(externalNetworkId);
 453         if(vpnId < 0) {
 454             LOG.error("Unable to create SNAT table entry for fixed ip {}", internalIp);
 455             return;
 456         }
 457         //Create the DNAT and SNAT table entries
 458         createDNATTblEntry(dpnId, internalIp, externalIp, routerId, vpnId, associatedVpnId);
 459
 460         createSNATTblEntry(dpnId, internalIp, externalIp, vpnId, routerId, associatedVpnId);
 461
 462         floatingIPHandler.onAddFloatingIp(dpnId, routerName, externalNetworkId, interfaceName, externalIp, internalIp);
 463     }
 464
 465     void createNATOnlyFlowEntries(BigInteger dpnId,  String interfaceName, String routerName, String associatedVPN, Uuid externalNetworkId, String internalIp, String externalIp) {
 466         //String segmentId = associatedVPN == null ? routerName : associatedVPN;
 467         LOG.debug("Retrieving vpn id for VPN {} to proceed with create NAT Flows", routerName);
 468         long routerId = NatUtil.getVpnId(dataBroker, routerName);
 469         if(routerId == NatConstants.INVALID_ID) {
 470             LOG.warn("Could not retrieve vpn id for {} to create NAT Flow entries", routerName);
 471             return;
 472         }
 473         long associatedVpnId = NatUtil.getVpnId(dataBroker, associatedVPN);
 474         LOG.debug("Associated VPN Id {} for router {}", associatedVpnId, routerName);
 475         long vpnId = getVpnId(externalNetworkId);
 476         if(vpnId < 0) {
 477             LOG.error("Unable to create SNAT table entry for fixed ip {}", internalIp);
 478             return;
 479         }
 480         //Create the DNAT and SNAT table entries
 481         //createDNATTblEntry(dpnId, internalIp, externalIp, routerId, vpnId);
 482         FlowEntity pFlowEntity = buildPreDNATFlowEntity(dpnId, internalIp, externalIp, routerId, vpnId, associatedVpnId );
 483         mdsalManager.installFlow(pFlowEntity);
 484
 485         FlowEntity flowEntity = buildDNATFlowEntity(dpnId, internalIp, externalIp, routerId, associatedVpnId);
 486         mdsalManager.installFlow(flowEntity);
 487
 488         //createSNATTblEntry(dpnId, internalIp, externalIp, vpnId, routerId, macAddr);
 489         pFlowEntity = buildPreSNATFlowEntity(dpnId, internalIp, externalIp, vpnId , routerId, associatedVpnId);
 490         mdsalManager.installFlow(pFlowEntity);
 491
 492         flowEntity = buildSNATFlowEntity(dpnId, internalIp, externalIp, vpnId);
 493         mdsalManager.installFlow(flowEntity);
 494
 495     }
 496
 497     void removeNATFlowEntries(String interfaceName, final IpMapping mapping,
 498                               final InstanceIdentifier<RouterPorts> pIdentifier, final String routerName) {
 499
 500         //Get the DPN on which this interface resides
 501         BigInteger dpnId = NatUtil.getDpnForInterface(interfaceManager, interfaceName);
 502         if(dpnId.equals(BigInteger.ZERO)) {
 503             LOG.info("Abort processing Floating ip configuration. No DPN for port : {}", interfaceName);
 504             return;
 505         }
 506
 507         long routerId = NatUtil.getVpnId(dataBroker, routerName);
 508         if(routerId == NatConstants.INVALID_ID) {
 509             LOG.warn("Could not retrieve router id for {} to remove NAT Flow entries", routerName);
 510             return;
 511         }
 512         //if(routerId == NatConstants.INVALID_ID) {
 513         //The router could be associated with BGP VPN
 514         Uuid associatedVPN = NatUtil.getVpnForRouter(dataBroker, routerName);
 515         long associatedVpnId = NatConstants.INVALID_ID;
 516         if(associatedVPN == null) {
 517             LOG.warn("Could not retrieve router id for {} to remove NAT Flow entries", routerName);
 518         } else {
 519             LOG.debug("Retrieving vpn id for VPN {} to proceed with remove NAT Flows", associatedVPN.getValue());
 520             associatedVpnId = NatUtil.getVpnId(dataBroker, associatedVPN.getValue());
 521         }
 522
 523         //Delete the DNAT and SNAT table entries
 524         removeDNATTblEntry(dpnId, mapping.getInternalIp(), mapping.getExternalIp(), routerId);
 525
 526         Uuid extNwId = getExtNetworkId(pIdentifier, LogicalDatastoreType.OPERATIONAL);
 527         if(extNwId == null) {
 528             LOG.error("External network associated with interface {} could not be retrieved", interfaceName);
 529             return;
 530         }
 531         long vpnId = getVpnId(extNwId);
 532         if(vpnId < 0) {
 533             LOG.error("No VPN associated with ext nw {}. Unable to delete SNAT table entry for fixed ip {}",
 534                     extNwId, mapping.getInternalIp());
 535             return;
 536         }
 537         removeSNATTblEntry(dpnId, mapping.getInternalIp(), routerId, mapping.getExternalIp(), vpnId);
 538
 539         long label = getOperationalIpMapping(routerName, interfaceName, mapping.getInternalIp());
 540         if(label < 0) {
 541             LOG.error("Could not retrieve label for prefix {} in router {}", mapping.getInternalIp(), routerId);
 542             return;
 543         }
 544         //Uuid extNwId = getExtNetworkId(pIdentifier);
 545 //        Uuid extNwId = getExternalNetworkForRouter(routerName);
 546 //        if(extNwId == null) {
 547 //            LOG.error("External network associated with router {} could not be retrieved", routerName);
 548 //            return;
 549 //        }
 550         floatingIPHandler.onRemoveFloatingIp(dpnId, routerName, extNwId, mapping.getExternalIp(), mapping.getInternalIp(), (int) label);
 551         removeOperationalDS(routerName, interfaceName, mapping.getInternalIp(), mapping.getExternalIp());
 552
 553     }
 554
 555     void removeNATFlowEntries(BigInteger dpnId, String interfaceName, String vpnName, String routerName, Uuid externalNetworkId, String internalIp, String externalIp) {
 556         long routerId = NatUtil.getVpnId(dataBroker, routerName);
 557         if(routerId == NatConstants.INVALID_ID) {
 558             LOG.warn("Could not retrieve router id for {} to remove NAT Flow entries", routerName);
 559             return;
 560         }
 561
 562         long vpnId = NatUtil.getVpnId(dataBroker, vpnName);
 563         if(vpnId == NatConstants.INVALID_ID) {
 564             LOG.warn("VPN Id not found for {} to remove NAT flow entries {}", vpnName, internalIp);
 565         }
 566
 567         //Delete the DNAT and SNAT table entries
 568         removeDNATTblEntry(dpnId, internalIp, externalIp, routerId);
 569
 570         removeSNATTblEntry(dpnId, internalIp, routerId, externalIp, vpnId);
 571
 572         long label = getOperationalIpMapping(routerName, interfaceName, internalIp);
 573         if(label < 0) {
 574             LOG.error("Could not retrieve label for prefix {} in router {}", internalIp, routerId);
 575             return;
 576         }
 577         //floatingIPHandler.onRemoveFloatingIp(dpnId, routerName, externalNetworkId, externalIp, internalIp, (int)label);
 578         ((VpnFloatingIpHandler) floatingIPHandler).cleanupFibEntries(dpnId, vpnName, externalIp, label);
 579         removeOperationalDS(routerName, interfaceName, internalIp, externalIp);
 580     }
 581
 582     void removeNATOnlyFlowEntries(BigInteger dpnId, String interfaceName, String routerName, String associatedVPN,
 583                                                                           String internalIp, String externalIp) {
 584         String segmentId = associatedVPN == null ? routerName : associatedVPN;
 585         LOG.debug("Retrieving vpn id for VPN {} to proceed with remove NAT Flows", segmentId);
 586         long routerId = NatUtil.getVpnId(dataBroker, segmentId);
 587         if(routerId == NatConstants.INVALID_ID) {
 588             LOG.warn("Could not retrieve vpn id for {} to remove NAT Flow entries", segmentId);
 589             return;
 590         }
 591         //Delete the DNAT and SNAT table entries
 592         removeDNATTblEntry(dpnId, internalIp, externalIp, routerId);
 593
 594         //removeSNATTblEntry(dpnId, internalIp, routerId, externalIp);
 595     }
 596
 597     private long getOperationalIpMapping(String routerId, String interfaceName, String internalIp) {
 598         InstanceIdentifier<IpMapping> ipMappingIdentifier = NatUtil.getIpMappingIdentifier(routerId, interfaceName, internalIp);
 599         Optional<IpMapping> ipMapping = NatUtil.read(dataBroker, LogicalDatastoreType.OPERATIONAL, ipMappingIdentifier);
 600         if(ipMapping.isPresent()) {
 601             return ipMapping.get().getLabel();
 602         }
 603         return NatConstants.INVALID_ID;
 604     }
 605
 606     void updateOperationalDS(String routerId, String interfaceName, long label, String internalIp, String externalIp) {
 607
 608         LOG.info("Updating operational DS for floating ip config : {} with label {}", internalIp, label);
 609         InstanceIdentifier<Ports> portsId = NatUtil.getPortsIdentifier(routerId, interfaceName);
 610         Optional<Ports> optPorts = NatUtil.read(dataBroker, LogicalDatastoreType.OPERATIONAL, portsId);
 611         IpMapping ipMapping = new IpMappingBuilder().setKey(new IpMappingKey(internalIp)).setInternalIp(internalIp)
 612                 .setExternalIp(externalIp).setLabel(label).build();
 613         if(optPorts.isPresent()) {
 614             LOG.debug("Ports {} entry already present. Updating ipmapping for internal ip {}", interfaceName, internalIp);
 615             MDSALUtil.syncWrite(dataBroker, LogicalDatastoreType.OPERATIONAL, portsId.child(IpMapping.class, new IpMappingKey(internalIp)), ipMapping);
 616         } else {
 617             LOG.debug("Adding Ports entry {} along with ipmapping {}", interfaceName, internalIp);
 618             List<IpMapping> ipMappings = new ArrayList<>();
 619             ipMappings.add(ipMapping);
 620             Ports ports = new PortsBuilder().setKey(new PortsKey(interfaceName)).setPortName(interfaceName).setIpMapping(ipMappings).build();
 621             MDSALUtil.syncWrite(dataBroker, LogicalDatastoreType.OPERATIONAL, portsId, ports);
 622         }
 623     }
 624
 625     void removeOperationalDS(String routerId, String interfaceName, String internalIp, String externalIp) {
 626         LOG.info("Remove operational DS for floating ip config: {}", internalIp);
 627         InstanceIdentifier<IpMapping> ipMappingId = NatUtil.getIpMappingIdentifier(routerId, interfaceName, internalIp);
 628         MDSALUtil.syncDelete(dataBroker, LogicalDatastoreType.OPERATIONAL, ipMappingId);
 629     }
 630
 631     private FlowEntity buildPreDNATDeleteFlowEntity(BigInteger dpId, String internalIp, String externalIp, long routerId) {
 632
 633         LOG.info("Bulding Delete DNAT Flow entity for ip {} ", externalIp);
 634
 635         String flowRef = NatUtil.getFlowRef(dpId, NwConstants.PDNAT_TABLE, routerId, externalIp);
 636
 637         FlowEntity flowEntity = MDSALUtil.buildFlowEntity(dpId, NwConstants.PDNAT_TABLE, flowRef,
 638                 NatConstants.DEFAULT_DNAT_FLOW_PRIORITY, flowRef, 0, 0,
 639                 NwConstants.COOKIE_DNAT_TABLE, null, null);
 640
 641         return flowEntity;
 642     }
 643
 644
 645
 646     private FlowEntity buildDNATDeleteFlowEntity(BigInteger dpId, String internalIp, String externalIp, long routerId) {
 647
 648         LOG.info("Bulding Delete DNAT Flow entity for ip {} ", externalIp);
 649
 650         String flowRef = NatUtil.getFlowRef(dpId, NwConstants.DNAT_TABLE, routerId, externalIp);
 651
 652         FlowEntity flowEntity = MDSALUtil.buildFlowEntity(dpId, NwConstants.DNAT_TABLE, flowRef,
 653                 NatConstants.DEFAULT_DNAT_FLOW_PRIORITY, flowRef, 0, 0,
 654                 NwConstants.COOKIE_DNAT_TABLE, null, null);
 655
 656         return flowEntity;
 657
 658     }
 659
 660     private FlowEntity buildPreSNATDeleteFlowEntity(BigInteger dpId, String internalIp, long routerId, String externalIp) {
 661
 662         LOG.info("Building Delete PSNAT Flow entity for ip {} ", internalIp);
 663
 664         String flowRef = NatUtil.getFlowRef(dpId, NwConstants.PSNAT_TABLE, routerId, internalIp);
 665
 666         FlowEntity flowEntity = MDSALUtil.buildFlowEntity(dpId, NwConstants.PSNAT_TABLE, flowRef,
 667                 NatConstants.DEFAULT_DNAT_FLOW_PRIORITY, flowRef, 0, 0,
 668                 NwConstants.COOKIE_DNAT_TABLE, null, null);
 669
 670         return flowEntity;
 671     }
 672
 673     private FlowEntity buildSNATDeleteFlowEntity(BigInteger dpId, String internalIp, long routerId, String externalIp) {
 674
 675         LOG.info("Building Delete SNAT Flow entity for ip {} ", internalIp);
 676
 677         String flowRef = NatUtil.getFlowRef(dpId, NwConstants.SNAT_TABLE, routerId, internalIp);
 678
 679         FlowEntity flowEntity = MDSALUtil.buildFlowEntity(dpId, NwConstants.SNAT_TABLE, flowRef,
 680                 NatConstants.DEFAULT_DNAT_FLOW_PRIORITY, flowRef, 0, 0,
 681                 NwConstants.COOKIE_DNAT_TABLE, null, null);
 682
 683         return flowEntity;
 684
 685
 686     }
 687
 688 }
 689