vpnservice/elanmanager/elanmanager-impl/src/main/java/org/opendaylight/netvirt/elan/internal/ElanServiceProvider.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
   9 package org.opendaylight.netvirt.elan.internal;
  10
  11 import com.google.common.base.Optional;
  12 import java.math.BigInteger;
  13 import java.util.ArrayList;
  14 import java.util.Collection;
  15 import java.util.Collections;
  16 import java.util.HashSet;
  17 import java.util.List;
  18 import java.util.Map;
  19 import java.util.Set;
  20 import java.util.concurrent.Future;
  21 import java.util.function.BiFunction;
  22 import org.opendaylight.controller.md.sal.binding.api.DataBroker;
  23 import org.opendaylight.controller.md.sal.common.api.data.LogicalDatastoreType;
  24 import org.opendaylight.genius.interfacemanager.exceptions.InterfaceAlreadyExistsException;
  25 import org.opendaylight.genius.interfacemanager.globals.IfmConstants;
  26 import org.opendaylight.genius.interfacemanager.interfaces.IInterfaceManager;
  27 import org.opendaylight.genius.mdsalutil.MDSALUtil;
  28 import org.opendaylight.genius.mdsalutil.interfaces.IMdsalApiManager;
  29 import org.opendaylight.netvirt.elan.statusanddiag.ElanStatusMonitor;
  30 import org.opendaylight.netvirt.elan.utils.ElanConstants;
  31 import org.opendaylight.netvirt.elan.utils.ElanForwardingEntriesHandler;
  32 import org.opendaylight.netvirt.elan.utils.ElanUtils;
  33 import org.opendaylight.netvirt.elanmanager.api.IElanService;
  34 import org.opendaylight.netvirt.elanmanager.exceptions.MacNotFoundException;
  35 import org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.interfaces.rev140508.Interfaces;
  36 import org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.interfaces.rev140508.interfaces.Interface;
  37 import org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.interfaces.rev140508.interfaces.InterfaceKey;
  38 import org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.yang.types.rev130715.PhysAddress;
  39 import org.opendaylight.yang.gen.v1.urn.opendaylight.genius.idmanager.rev160406.CreateIdPoolInput;
  40 import org.opendaylight.yang.gen.v1.urn.opendaylight.genius.idmanager.rev160406.CreateIdPoolInputBuilder;
  41 import org.opendaylight.yang.gen.v1.urn.opendaylight.genius.idmanager.rev160406.IdManagerService;
  42 import org.opendaylight.yang.gen.v1.urn.opendaylight.genius.interfacemanager.rev160406.IfL2vlan;
  43 import org.opendaylight.yang.gen.v1.urn.opendaylight.genius.interfacemanager.rpcs.rev160406.OdlInterfaceRpcService;
  44 import org.opendaylight.yang.gen.v1.urn.opendaylight.netvirt.elan.etree.rev160614.EtreeInstance;
  45 import org.opendaylight.yang.gen.v1.urn.opendaylight.netvirt.elan.etree.rev160614.EtreeInstanceBuilder;
  46 import org.opendaylight.yang.gen.v1.urn.opendaylight.netvirt.elan.etree.rev160614.EtreeInterface;
  47 import org.opendaylight.yang.gen.v1.urn.opendaylight.netvirt.elan.etree.rev160614.EtreeInterface.EtreeInterfaceType;
  48 import org.opendaylight.yang.gen.v1.urn.opendaylight.netvirt.elan.etree.rev160614.EtreeInterfaceBuilder;
  49 import org.opendaylight.yang.gen.v1.urn.opendaylight.netvirt.elan.rev150602.ElanInstances;
  50 import org.opendaylight.yang.gen.v1.urn.opendaylight.netvirt.elan.rev150602.ElanInterfaces;
  51 import org.opendaylight.yang.gen.v1.urn.opendaylight.netvirt.elan.rev150602.elan._interface.forwarding.entries.ElanInterfaceMac;
  52 import org.opendaylight.yang.gen.v1.urn.opendaylight.netvirt.elan.rev150602.elan.dpn.interfaces.elan.dpn.interfaces.list.DpnInterfaces;
  53 import org.opendaylight.yang.gen.v1.urn.opendaylight.netvirt.elan.rev150602.elan.instances.ElanInstance;
  54 import org.opendaylight.yang.gen.v1.urn.opendaylight.netvirt.elan.rev150602.elan.instances.ElanInstanceBuilder;
  55 import org.opendaylight.yang.gen.v1.urn.opendaylight.netvirt.elan.rev150602.elan.instances.ElanInstanceKey;
  56 import org.opendaylight.yang.gen.v1.urn.opendaylight.netvirt.elan.rev150602.elan.interfaces.ElanInterface;
  57 import org.opendaylight.yang.gen.v1.urn.opendaylight.netvirt.elan.rev150602.elan.interfaces.ElanInterfaceBuilder;
  58 import org.opendaylight.yang.gen.v1.urn.opendaylight.netvirt.elan.rev150602.elan.interfaces.ElanInterfaceKey;
  59 import org.opendaylight.yang.gen.v1.urn.opendaylight.netvirt.elan.rev150602.elan.state.Elan;
  60 import org.opendaylight.yang.gen.v1.urn.opendaylight.netvirt.elan.rev150602.forwarding.entries.MacEntry;
  61 import org.opendaylight.yang.gen.v1.urn.tbd.params.xml.ns.yang.network.topology.rev131021.network.topology.topology.Node;
  62 import org.opendaylight.yangtools.yang.binding.InstanceIdentifier;
  63 import org.opendaylight.yangtools.yang.common.RpcResult;
  64 import org.slf4j.Logger;
  65 import org.slf4j.LoggerFactory;
  66
  67 public class ElanServiceProvider implements IElanService {
  68
  69     private static final Logger logger = LoggerFactory.getLogger(ElanServiceProvider.class);
  70
  71     private final IdManagerService idManager;
  72     private final IInterfaceManager interfaceManager;
  73     private final ElanInstanceManager elanInstanceManager;
  74     private final ElanBridgeManager bridgeMgr;
  75     private final DataBroker broker;
  76     private final ElanStatusMonitor elanStatusMonitor;
  77     private final ElanUtils elanUtils;
  78
  79     private boolean generateIntBridgeMac = true;
  80
  81     public ElanServiceProvider(IdManagerService idManager, IInterfaceManager interfaceManager,
  82                                ElanInstanceManager elanInstanceManager, ElanBridgeManager bridgeMgr, DataBroker broker,
  83                                ElanStatusMonitor elanStatusMonitor, ElanUtils elanUtils) {
  84         this.idManager = idManager;
  85         this.interfaceManager = interfaceManager;
  86         this.elanInstanceManager = elanInstanceManager;
  87         this.bridgeMgr = bridgeMgr;
  88         this.broker = broker;
  89         this.elanStatusMonitor = elanStatusMonitor;
  90         this.elanUtils = elanUtils;
  91     }
  92
  93     public void init() {
  94         logger.info("Starting ElnaServiceProvider");
  95         elanStatusMonitor.reportStatus("STARTING");
  96         try {
  97             createIdPool();
  98
  99             elanStatusMonitor.reportStatus("OPERATIONAL");
 100         } catch (Exception e) {
 101             logger.error("Error initializing services", e);
 102             elanStatusMonitor.reportStatus("ERROR");
 103         }
 104     }
 105
 106     private void createIdPool() {
 107         CreateIdPoolInput createPool = new CreateIdPoolInputBuilder().setPoolName(ElanConstants.ELAN_ID_POOL_NAME)
 108                 .setLow(ElanConstants.ELAN_ID_LOW_VALUE).setHigh(ElanConstants.ELAN_ID_HIGH_VALUE).build();
 109         try {
 110             Future<RpcResult<Void>> result = idManager.createIdPool(createPool);
 111             if ((result != null) && (result.get().isSuccessful())) {
 112                 logger.debug("ELAN Id Pool is created successfully");
 113             }
 114         } catch (Exception e) {
 115             logger.error("Failed to create ELAN Id pool {}", e);
 116         }
 117     }
 118
 119     @Override
 120     public boolean createElanInstance(String elanInstanceName, long macTimeout, String description) {
 121         ElanInstance existingElanInstance = elanInstanceManager.getElanInstanceByName(elanInstanceName);
 122         boolean isSuccess = true;
 123         if (existingElanInstance != null) {
 124             if (compareWithExistingElanInstance(existingElanInstance, macTimeout, description)) {
 125                 logger.debug("Elan Instance is already present in the Operational DS {}", existingElanInstance);
 126                 return true;
 127             } else {
 128                 ElanInstance updateElanInstance = new ElanInstanceBuilder().setElanInstanceName(elanInstanceName)
 129                         .setDescription(description).setMacTimeout(macTimeout)
 130                         .setKey(new ElanInstanceKey(elanInstanceName)).build();
 131                 MDSALUtil.syncWrite(broker, LogicalDatastoreType.CONFIGURATION,
 132                         ElanUtils.getElanInstanceConfigurationDataPath(elanInstanceName), updateElanInstance);
 133                 logger.debug("Updating the Elan Instance {} with MAC TIME-OUT %l and Description %s ",
 134                         updateElanInstance, macTimeout, description);
 135             }
 136         } else {
 137             ElanInstance elanInstance = new ElanInstanceBuilder().setElanInstanceName(elanInstanceName)
 138                     .setMacTimeout(macTimeout).setDescription(description).setKey(new ElanInstanceKey(elanInstanceName))
 139                     .build();
 140             MDSALUtil.syncWrite(broker, LogicalDatastoreType.CONFIGURATION,
 141                     ElanUtils.getElanInstanceConfigurationDataPath(elanInstanceName), elanInstance);
 142             logger.debug("Creating the new Elan Instance {}", elanInstance);
 143         }
 144         return isSuccess;
 145     }
 146
 147     @Override
 148     public boolean createEtreeInstance(String elanInstanceName, long macTimeout, String description) {
 149         ElanInstance existingElanInstance = elanInstanceManager.getElanInstanceByName(elanInstanceName);
 150         boolean isSuccess = true;
 151         if (existingElanInstance != null) {
 152             if (compareWithExistingElanInstance(existingElanInstance, macTimeout, description)) {
 153                 logger.warn("Etree Instance is already present in the Operational DS {}", existingElanInstance);
 154                 return true;
 155             } else {
 156                 EtreeInstance etreeInstance = new EtreeInstanceBuilder().build();
 157                 ElanInstance updateElanInstance = new ElanInstanceBuilder().setElanInstanceName(elanInstanceName)
 158                         .setDescription(description).setMacTimeout(macTimeout)
 159                         .setKey(new ElanInstanceKey(elanInstanceName))
 160                         .addAugmentation(EtreeInstance.class, etreeInstance).build();
 161                 MDSALUtil.syncWrite(broker, LogicalDatastoreType.CONFIGURATION,
 162                         ElanUtils.getElanInstanceConfigurationDataPath(elanInstanceName), updateElanInstance);
 163                 logger.debug("Updating the Etree Instance {} with MAC TIME-OUT %l and Description %s ",
 164                         updateElanInstance, macTimeout, description);
 165             }
 166         } else {
 167             EtreeInstance etreeInstance = new EtreeInstanceBuilder().build();
 168             ElanInstance elanInstance = new ElanInstanceBuilder().setElanInstanceName(elanInstanceName)
 169                     .setMacTimeout(macTimeout).setDescription(description).setKey(new ElanInstanceKey(elanInstanceName))
 170                     .addAugmentation(EtreeInstance.class, etreeInstance).build();
 171             MDSALUtil.syncWrite(broker, LogicalDatastoreType.CONFIGURATION,
 172                     ElanUtils.getElanInstanceConfigurationDataPath(elanInstanceName), elanInstance);
 173             logger.debug("Creating the new Etree Instance {}", elanInstance);
 174         }
 175         return isSuccess;
 176     }
 177
 178     public static boolean compareWithExistingElanInstance(ElanInstance existingElanInstance, long macTimeOut,
 179             String description) {
 180         boolean isEqual = false;
 181         if (existingElanInstance.getMacTimeout() == macTimeOut
 182                 && existingElanInstance.getDescription().equals(description)) {
 183             isEqual = true;
 184         }
 185         return isEqual;
 186     }
 187
 188     @Override
 189     public void updateElanInstance(String elanInstanceName, long newMacTimout, String newDescription) {
 190         createElanInstance(elanInstanceName, newMacTimout, newDescription);
 191     }
 192
 193     @Override
 194     public boolean deleteEtreeInstance(String etreeInstanceName) {
 195         return deleteElanInstance(etreeInstanceName);
 196     }
 197
 198     @Override
 199     public boolean deleteElanInstance(String elanInstanceName) {
 200         boolean isSuccess = false;
 201         ElanInstance existingElanInstance = elanInstanceManager.getElanInstanceByName(elanInstanceName);
 202         if (existingElanInstance == null) {
 203             logger.debug("Elan Instance is not present {}", existingElanInstance);
 204             return isSuccess;
 205         }
 206         logger.debug("Deletion of the existing Elan Instance {}", existingElanInstance);
 207         ElanUtils.delete(broker, LogicalDatastoreType.CONFIGURATION,
 208                 ElanUtils.getElanInstanceConfigurationDataPath(elanInstanceName));
 209         isSuccess = true;
 210         return isSuccess;
 211     }
 212
 213     @Override
 214     public void addEtreeInterface(String etreeInstanceName, String interfaceName, EtreeInterfaceType interfaceType,
 215             List<String> staticMacAddresses, String description) {
 216         ElanInstance existingElanInstance = elanInstanceManager.getElanInstanceByName(etreeInstanceName);
 217         if (existingElanInstance != null && existingElanInstance.getAugmentation(EtreeInstance.class) != null) {
 218             EtreeInterface etreeInterface = new EtreeInterfaceBuilder().setEtreeInterfaceType(interfaceType).build();
 219             ElanInterface elanInterface;
 220             if (staticMacAddresses == null) {
 221                 elanInterface = new ElanInterfaceBuilder().setElanInstanceName(etreeInstanceName)
 222                         .setDescription(description).setName(interfaceName).setKey(new ElanInterfaceKey(interfaceName))
 223                         .addAugmentation(EtreeInterface.class, etreeInterface).build();
 224             } else {
 225                 elanInterface = new ElanInterfaceBuilder().setElanInstanceName(etreeInstanceName)
 226                         .setDescription(description).setName(interfaceName)
 227                         .setStaticMacEntries(getPhysAddress(staticMacAddresses))
 228                         .setKey(new ElanInterfaceKey(interfaceName))
 229                         .addAugmentation(EtreeInterface.class, etreeInterface).build();
 230             }
 231             MDSALUtil.syncWrite(broker, LogicalDatastoreType.CONFIGURATION,
 232                     ElanUtils.getElanInterfaceConfigurationDataPathId(interfaceName), elanInterface);
 233             logger.debug("Creating the new Etree Interface {}", elanInterface);
 234         }
 235     }
 236
 237     @Override
 238     public void addElanInterface(String elanInstanceName, String interfaceName, List<String> staticMacAddresses,
 239             String description) {
 240         ElanInstance existingElanInstance = elanInstanceManager.getElanInstanceByName(elanInstanceName);
 241         if (existingElanInstance != null) {
 242             ElanInterface elanInterface;
 243             if (staticMacAddresses == null) {
 244                 elanInterface = new ElanInterfaceBuilder().setElanInstanceName(elanInstanceName)
 245                         .setDescription(description).setName(interfaceName).setKey(new ElanInterfaceKey(interfaceName))
 246                         .build();
 247             } else {
 248                 elanInterface = new ElanInterfaceBuilder().setElanInstanceName(elanInstanceName)
 249                         .setDescription(description).setName(interfaceName)
 250                         .setStaticMacEntries(getPhysAddress(staticMacAddresses))
 251                         .setKey(new ElanInterfaceKey(interfaceName)).build();
 252             }
 253             MDSALUtil.syncWrite(broker, LogicalDatastoreType.CONFIGURATION,
 254                     ElanUtils.getElanInterfaceConfigurationDataPathId(interfaceName), elanInterface);
 255             logger.debug("Creating the new ELan Interface {}", elanInterface);
 256         }
 257     }
 258
 259     @Override
 260     public void updateElanInterface(String elanInstanceName, String interfaceName,
 261             List<String> updatedStaticMacAddresses, String newDescription) {
 262         ElanInterface existingElanInterface = elanUtils.getElanInterfaceByElanInterfaceName(interfaceName);
 263         if (existingElanInterface == null) {
 264             return;
 265         }
 266         List<PhysAddress> existingMacAddress = existingElanInterface.getStaticMacEntries();
 267         List<PhysAddress> updatedMacAddresses = getPhysAddress(updatedStaticMacAddresses);
 268         List<PhysAddress> updatedPhysAddress = getUpdatedPhyAddress(existingMacAddress, updatedMacAddresses);
 269         if (updatedPhysAddress.size() > 0) {
 270             logger.debug("updating the ElanInterface with new Mac Entries {}", updatedStaticMacAddresses);
 271             ElanInterface elanInterface = new ElanInterfaceBuilder().setElanInstanceName(elanInstanceName)
 272                     .setName(interfaceName).setDescription(newDescription).setStaticMacEntries(updatedPhysAddress)
 273                     .setKey(new ElanInterfaceKey(interfaceName)).build();
 274             MDSALUtil.syncWrite(broker, LogicalDatastoreType.CONFIGURATION,
 275                     ElanUtils.getElanInterfaceConfigurationDataPathId(interfaceName), elanInterface);
 276         }
 277     }
 278
 279     @Override
 280     public void deleteEtreeInterface(String elanInstanceName, String interfaceName) {
 281         deleteElanInterface(elanInstanceName, interfaceName);
 282         logger.debug("deleting the Etree Interface {}", interfaceName);
 283     }
 284
 285     @Override
 286     public void deleteElanInterface(String elanInstanceName, String interfaceName) {
 287         ElanInterface existingElanInterface = elanUtils.getElanInterfaceByElanInterfaceName(interfaceName);
 288         if (existingElanInterface != null) {
 289             ElanUtils.delete(broker, LogicalDatastoreType.CONFIGURATION,
 290                     ElanUtils.getElanInterfaceConfigurationDataPathId(interfaceName));
 291             logger.debug("deleting the Elan Interface {}", existingElanInterface);
 292         }
 293     }
 294
 295     @Override
 296     public void addStaticMacAddress(String elanInstanceName, String interfaceName, String macAddress) {
 297         ElanInterface existingElanInterface = elanUtils.getElanInterfaceByElanInterfaceName(interfaceName);
 298         PhysAddress updateStaticMacAddress = new PhysAddress(macAddress);
 299         if (existingElanInterface != null) {
 300             List<PhysAddress> existingMacAddress = existingElanInterface.getStaticMacEntries();
 301             if (existingMacAddress.contains(updateStaticMacAddress)) {
 302                 return;
 303             }
 304             existingMacAddress.add(updateStaticMacAddress);
 305             ElanInterface elanInterface = new ElanInterfaceBuilder().setElanInstanceName(elanInstanceName)
 306                     .setName(interfaceName).setStaticMacEntries(existingMacAddress)
 307                     .setDescription(existingElanInterface.getDescription()).setKey(new ElanInterfaceKey(interfaceName))
 308                     .build();
 309             MDSALUtil.syncWrite(broker, LogicalDatastoreType.CONFIGURATION,
 310                     ElanUtils.getElanInterfaceConfigurationDataPathId(interfaceName), elanInterface);
 311         }
 312     }
 313
 314     @Override
 315     public void deleteStaticMacAddress(String elanInstanceName, String interfaceName, String macAddress)
 316             throws MacNotFoundException {
 317         ElanInterface existingElanInterface = elanUtils.getElanInterfaceByElanInterfaceName(interfaceName);
 318         PhysAddress physAddress = new PhysAddress(macAddress);
 319         if (existingElanInterface == null) {
 320             return;
 321         }
 322         List<PhysAddress> existingMacAddress = existingElanInterface.getStaticMacEntries();
 323         if (existingMacAddress.contains(physAddress)) {
 324             existingMacAddress.remove(physAddress);
 325             ElanInterface elanInterface = new ElanInterfaceBuilder().setElanInstanceName(elanInstanceName)
 326                     .setName(interfaceName).setStaticMacEntries(existingMacAddress)
 327                     .setDescription(existingElanInterface.getDescription()).setKey(new ElanInterfaceKey(interfaceName))
 328                     .build();
 329             MDSALUtil.syncWrite(broker, LogicalDatastoreType.CONFIGURATION,
 330                     ElanUtils.getElanInterfaceConfigurationDataPathId(interfaceName), elanInterface);
 331         } else {
 332             throw new MacNotFoundException("Mac Not Found Exception");
 333         }
 334     }
 335
 336     @Override
 337     public Collection<MacEntry> getElanMacTable(String elanInstanceName) {
 338         Elan elanInfo = elanUtils.getElanByName(elanInstanceName);
 339         List<MacEntry> macAddress = new ArrayList<>();
 340         if (elanInfo == null) {
 341             return macAddress;
 342         }
 343         List<String> elanInterfaces = elanInfo.getElanInterfaces();
 344         if (elanInterfaces != null && elanInterfaces.size() > 0) {
 345             for (String elanInterface : elanInterfaces) {
 346                 ElanInterfaceMac elanInterfaceMac = elanUtils.getElanInterfaceMacByInterfaceName(elanInterface);
 347                 if (elanInterfaceMac != null && elanInterfaceMac.getMacEntry() != null
 348                         && elanInterfaceMac.getMacEntry().size() > 0) {
 349                     macAddress.addAll(elanInterfaceMac.getMacEntry());
 350                 }
 351             }
 352         }
 353         return macAddress;
 354     }
 355
 356     @Override
 357     public void flushMACTable(String elanInstanceName) {
 358         Elan elanInfo = elanUtils.getElanByName(elanInstanceName);
 359         if (elanInfo == null) {
 360             return;
 361         }
 362         List<String> elanInterfaces = elanInfo.getElanInterfaces();
 363         if (elanInterfaces == null || elanInterfaces.isEmpty()) {
 364             return;
 365         }
 366         for (String elanInterface : elanInterfaces) {
 367             ElanInterfaceMac elanInterfaceMac = elanUtils.getElanInterfaceMacByInterfaceName(elanInterface);
 368             if (elanInterfaceMac.getMacEntry() != null && elanInterfaceMac.getMacEntry().size() > 0) {
 369                 List<MacEntry> macEntries = elanInterfaceMac.getMacEntry();
 370                 for (MacEntry macEntry : macEntries) {
 371                     try {
 372                         deleteStaticMacAddress(elanInstanceName, elanInterface, macEntry.getMacAddress().getValue());
 373                     } catch (MacNotFoundException e) {
 374                         logger.error("Mac Not Found Exception {}", e);
 375                         e.printStackTrace();
 376                     }
 377                 }
 378             }
 379         }
 380
 381     }
 382
 383     public static List<PhysAddress> getPhysAddress(List<String> macAddress) {
 384         List<PhysAddress> physAddresses = new ArrayList<>();
 385         for (String mac : macAddress) {
 386             physAddresses.add(new PhysAddress(mac));
 387         }
 388         return physAddresses;
 389     }
 390
 391     public List<PhysAddress> getUpdatedPhyAddress(List<PhysAddress> originalAddresses,
 392             List<PhysAddress> updatePhyAddresses) {
 393         if (updatePhyAddresses != null && !updatePhyAddresses.isEmpty()) {
 394             List<PhysAddress> existingClonedPhyAddress = new ArrayList<>();
 395             if (originalAddresses != null && !originalAddresses.isEmpty()) {
 396                 existingClonedPhyAddress.addAll(0, originalAddresses);
 397                 originalAddresses.removeAll(updatePhyAddresses);
 398                 updatePhyAddresses.removeAll(existingClonedPhyAddress);
 399             }
 400         }
 401         return updatePhyAddresses;
 402     }
 403
 404     @Override
 405     public ElanInstance getElanInstance(String elanName) {
 406         return elanUtils.getElanInstanceByName(elanName);
 407     }
 408
 409     @Override
 410     public List<ElanInstance> getElanInstances() {
 411         List<ElanInstance> elanList = new ArrayList<>();
 412         InstanceIdentifier<ElanInstances> elanInstancesIdentifier = InstanceIdentifier.builder(ElanInstances.class)
 413                 .build();
 414         Optional<ElanInstances> elansOptional = elanUtils.read(broker, LogicalDatastoreType.CONFIGURATION,
 415                 elanInstancesIdentifier);
 416         if (elansOptional.isPresent()) {
 417             elanList.addAll(elansOptional.get().getElanInstance());
 418         }
 419         return elanList;
 420     }
 421
 422     @Override
 423     public List<String> getElanInterfaces(String elanInstanceName) {
 424         List<String> elanInterfaces = new ArrayList<>();
 425         InstanceIdentifier<ElanInterfaces> elanInterfacesIdentifier = InstanceIdentifier.builder(ElanInterfaces.class)
 426                 .build();
 427         Optional<ElanInterfaces> elanInterfacesOptional = elanUtils.read(broker, LogicalDatastoreType.CONFIGURATION,
 428                 elanInterfacesIdentifier);
 429         if (!elanInterfacesOptional.isPresent()) {
 430             return elanInterfaces;
 431         }
 432         List<ElanInterface> elanInterfaceList = elanInterfacesOptional.get().getElanInterface();
 433         for (ElanInterface elanInterface : elanInterfaceList) {
 434             if (elanInterface.getElanInstanceName().equals(elanInstanceName)) {
 435                 elanInterfaces.add(elanInterface.getName());
 436             }
 437         }
 438         return elanInterfaces;
 439     }
 440
 441     public boolean getGenerateIntBridgeMac() {
 442         return generateIntBridgeMac;
 443     }
 444
 445     public void setGenerateIntBridgeMac(boolean generateIntBridgeMac) {
 446         this.generateIntBridgeMac = generateIntBridgeMac;
 447     }
 448
 449     @Override
 450     public void createExternalElanNetworks(Node node) {
 451         handleExternalElanNetworks(node, new BiFunction<ElanInstance, String, Void>() {
 452
 453             @Override
 454             public Void apply(ElanInstance elanInstance, String interfaceName) {
 455                 createExternalElanNetwork(elanInstance, interfaceName);
 456                 return null;
 457             }
 458         });
 459     }
 460
 461     @Override
 462     public void createExternalElanNetwork(ElanInstance elanInstance) {
 463         handleExternalElanNetwork(elanInstance, new BiFunction<ElanInstance, String, Void>() {
 464
 465             @Override
 466             public Void apply(ElanInstance elanInstance, String interfaceName) {
 467                 createExternalElanNetwork(elanInstance, interfaceName);
 468                 return null;
 469             }
 470
 471         });
 472     }
 473
 474     @Override
 475     public void deleteExternalElanNetworks(Node node) {
 476         handleExternalElanNetworks(node, new BiFunction<ElanInstance, String, Void>() {
 477
 478             @Override
 479             public Void apply(ElanInstance elanInstance, String interfaceName) {
 480                 deleteExternalElanNetwork(elanInstance, interfaceName);
 481                 return null;
 482             }
 483         });
 484     }
 485
 486     @Override
 487     public void deleteExternalElanNetwork(ElanInstance elanInstance) {
 488         handleExternalElanNetwork(elanInstance, new BiFunction<ElanInstance, String, Void>() {
 489
 490             @Override
 491             public Void apply(ElanInstance elanInstance, String interfaceName) {
 492                 deleteExternalElanNetwork(elanInstance, interfaceName);
 493                 return null;
 494             }
 495
 496         });
 497     }
 498
 499     @Override
 500     public void updateExternalElanNetworks(Node origNode, Node updatedNode) {
 501         if (!bridgeMgr.isIntegrationBridge(updatedNode)) {
 502             return;
 503         }
 504
 505         List<ElanInstance> elanInstances = getElanInstances();
 506         if (elanInstances == null || elanInstances.isEmpty()) {
 507             logger.trace("No ELAN instances found");
 508             return;
 509         }
 510
 511         Optional<Map<String, String>> origProviderMapOpt = bridgeMgr.getOpenvswitchOtherConfigMap(origNode,
 512                 ElanBridgeManager.PROVIDER_MAPPINGS_KEY);
 513         Optional<Map<String, String>> updatedProviderMapOpt = bridgeMgr.getOpenvswitchOtherConfigMap(updatedNode,
 514                 ElanBridgeManager.PROVIDER_MAPPINGS_KEY);
 515         Map<String, String> origProviderMappping = origProviderMapOpt.or(Collections.emptyMap());
 516         Map<String, String> updatedProviderMappping = updatedProviderMapOpt.or(Collections.emptyMap());
 517
 518         for (ElanInstance elanInstance : elanInstances) {
 519             String physicalNetworkName = elanInstance.getPhysicalNetworkName();
 520             if (physicalNetworkName != null) {
 521                 String origPortName = origProviderMappping.get(physicalNetworkName);
 522                 String updatedPortName = updatedProviderMappping.get(physicalNetworkName);
 523                 if (origPortName != null && !origPortName.equals(updatedPortName)) {
 524                     deleteExternalElanNetwork(elanInstance, getExtInterfaceName(origNode, physicalNetworkName));
 525                 }
 526                 if (updatedPortName != null && !updatedPortName.equals(origPortName)) {
 527                     createExternalElanNetwork(elanInstance, getExtInterfaceName(updatedNode, updatedPortName));
 528                 }
 529             }
 530         }
 531     }
 532
 533     private void createExternalElanNetwork(ElanInstance elanInstance, String interfaceName) {
 534         if (interfaceName == null) {
 535             logger.trace("No physial interface is attached to {}", elanInstance.getPhysicalNetworkName());
 536             return;
 537         }
 538
 539         String elanInterfaceName = createIetfInterfaces(elanInstance, interfaceName);
 540         addElanInterface(elanInstance.getElanInstanceName(), elanInterfaceName, null, null);
 541     }
 542
 543     private void deleteExternalElanNetwork(ElanInstance elanInstance, String interfaceName) {
 544         if (interfaceName == null) {
 545             logger.trace("No physial interface is attached to {}", elanInstance.getPhysicalNetworkName());
 546             return;
 547         }
 548
 549         String elanInstanceName = elanInstance.getElanInstanceName();
 550         for (String elanInterface : getExternalElanInterfaces(elanInstanceName)) {
 551             if (elanInterface.startsWith(interfaceName)) {
 552                 deleteIetfInterface(elanInterface);
 553                 deleteElanInterface(elanInstanceName, elanInterface);
 554             }
 555         }
 556     }
 557
 558     @Override
 559     public String getExternalElanInterface(String elanInstanceName, BigInteger dpnId) {
 560         DpnInterfaces dpnInterfaces = elanUtils.getElanInterfaceInfoByElanDpn(elanInstanceName, dpnId);
 561         if (dpnInterfaces == null || dpnInterfaces.getInterfaces() == null) {
 562             logger.trace("Elan {} does not have interfaces in DPN {}", elanInstanceName, dpnId);
 563             return null;
 564         }
 565
 566         for (String dpnInterface : dpnInterfaces.getInterfaces()) {
 567             if (elanUtils.isExternal(dpnInterface)) {
 568                 return dpnInterface;
 569             }
 570         }
 571
 572         logger.trace("Elan {} does not have any external interace attached to DPN {}", elanInstanceName, dpnId);
 573         return null;
 574     }
 575
 576     @Override
 577     public Collection<String> getExternalElanInterfaces(String elanInstanceName) {
 578         List<String> elanInterfaces = getElanInterfaces(elanInstanceName);
 579         if (elanInterfaces == null || elanInterfaces.isEmpty()) {
 580             logger.trace("No ELAN interfaces defined for {}", elanInstanceName);
 581             return Collections.emptySet();
 582         }
 583
 584         Set<String> externalElanInterfaces = new HashSet<>();
 585         for (String elanInterface : elanInterfaces) {
 586             if (elanUtils.isExternal(elanInterface)) {
 587                 externalElanInterfaces.add(elanInterface);
 588             }
 589         }
 590
 591         return externalElanInterfaces;
 592     }
 593
 594     @Override
 595     public boolean isExternalInterface(String interfaceName) {
 596         return elanUtils.isExternal(interfaceName);
 597     }
 598
 599     /**
 600      * Create ietf-interfaces based on the ELAN segment type.<br>
 601      * For segment type flat - create transparent interface pointing to the
 602      * patch-port attached to the physnet port.<br>
 603      * For segment type vlan - create trunk interface pointing to the patch-port
 604      * attached to the physnet port + trunk-member interface pointing to the
 605      * trunk interface.
 606      *
 607      * @param elanInstance
 608      *            ELAN instance
 609      * @param parentRef
 610      *            parent interface name
 611      * @return the name of the interface to be added to the ELAN instance i.e.
 612      *         trunk-member name for vlan network and transparent for flat
 613      *         network or null otherwise
 614      */
 615     private String createIetfInterfaces(ElanInstance elanInstance, String parentRef) {
 616         String interfaceName = null;
 617
 618         try {
 619             if (ElanUtils.isFlat(elanInstance)) {
 620                 interfaceName = parentRef + IfmConstants.OF_URI_SEPARATOR + "flat";
 621                 interfaceManager.createVLANInterface(interfaceName, parentRef, null, null, null,
 622                         IfL2vlan.L2vlanMode.Transparent, true);
 623             } else if (ElanUtils.isVlan(elanInstance)) {
 624                 Long segmentationId = elanInstance.getSegmentationId();
 625                 interfaceName = parentRef + IfmConstants.OF_URI_SEPARATOR + segmentationId;
 626                 String trunkName = parentRef + IfmConstants.OF_URI_SEPARATOR + "trunk";
 627                 interfaceManager.createVLANInterface(trunkName, parentRef, null, null, null,
 628                         IfL2vlan.L2vlanMode.Trunk, true);
 629
 630                 interfaceManager.createVLANInterface(interfaceName, trunkName, null, segmentationId.intValue(), null,
 631                         IfL2vlan.L2vlanMode.TrunkMember, true);
 632             }
 633         } catch (InterfaceAlreadyExistsException e) {
 634             logger.trace("Interface {} was already created", interfaceName);
 635         }
 636
 637         return interfaceName;
 638     }
 639
 640     private void deleteIetfInterface(String interfaceName) {
 641         InterfaceKey interfaceKey = new InterfaceKey(interfaceName);
 642         InstanceIdentifier<Interface> interfaceInstanceIdentifier = InstanceIdentifier.builder(Interfaces.class)
 643                 .child(Interface.class, interfaceKey).build();
 644         MDSALUtil.syncDelete(broker, LogicalDatastoreType.CONFIGURATION, interfaceInstanceIdentifier);
 645         logger.debug("Deleting IETF interface {}", interfaceName);
 646     }
 647
 648     private String getExtInterfaceName(Node node, String physicalNetworkName) {
 649         if (physicalNetworkName == null) {
 650             return null;
 651         }
 652
 653         String providerMappingValue = bridgeMgr.getProviderMappingValue(node, physicalNetworkName);
 654         if (providerMappingValue == null) {
 655             logger.trace("No provider mapping found for physicalNetworkName {} node {}", physicalNetworkName,
 656                     node.getNodeId().getValue());
 657             return null;
 658         }
 659
 660         return bridgeMgr.southboundUtils.getDataPathId(node) + IfmConstants.OF_URI_SEPARATOR
 661                 + bridgeMgr.getIntBridgePortNameFor(node, providerMappingValue);
 662     }
 663
 664     private void handleExternalElanNetworks(Node node, BiFunction<ElanInstance, String, Void> function) {
 665         if (!bridgeMgr.isIntegrationBridge(node)) {
 666             return;
 667         }
 668
 669         List<ElanInstance> elanInstances = getElanInstances();
 670         if (elanInstances == null || elanInstances.isEmpty()) {
 671             logger.trace("No ELAN instances found");
 672             return;
 673         }
 674
 675         for (ElanInstance elanInstance : elanInstances) {
 676             String interfaceName = getExtInterfaceName(node, elanInstance.getPhysicalNetworkName());
 677             if (interfaceName != null) {
 678                 function.apply(elanInstance, interfaceName);
 679             }
 680         }
 681     }
 682
 683     private void handleExternalElanNetwork(ElanInstance elanInstance, BiFunction<ElanInstance, String, Void> function) {
 684         String elanInstanceName = elanInstance.getElanInstanceName();
 685         if (elanInstance.getPhysicalNetworkName() == null) {
 686             logger.trace("No physical network attached to {}", elanInstanceName);
 687             return;
 688         }
 689
 690         List<Node> nodes = bridgeMgr.southboundUtils.getOvsdbNodes();
 691         if (nodes == null || nodes.isEmpty()) {
 692             logger.trace("No OVS nodes found while creating external network for ELAN {}",
 693                     elanInstance.getElanInstanceName());
 694             return;
 695         }
 696
 697         for (Node node : nodes) {
 698             if (bridgeMgr.isIntegrationBridge(node)) {
 699                 String interfaceName = getExtInterfaceName(node, elanInstance.getPhysicalNetworkName());
 700                 function.apply(elanInstance, interfaceName);
 701             }
 702         }
 703     }
 704
 705 }