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.netvirt.elan.statusanddiag.ElanStatusMonitor;
  29 import org.opendaylight.netvirt.elan.utils.ElanConstants;
  30 import org.opendaylight.netvirt.elan.utils.ElanUtils;
  31 import org.opendaylight.netvirt.elanmanager.api.IElanService;
  32 import org.opendaylight.netvirt.elanmanager.exceptions.MacNotFoundException;
  33 import org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.interfaces.rev140508.Interfaces;
  34 import org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.interfaces.rev140508.interfaces.Interface;
  35 import org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.interfaces.rev140508.interfaces.InterfaceKey;
  36 import org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.yang.types.rev130715.PhysAddress;
  37 import org.opendaylight.yang.gen.v1.urn.opendaylight.genius.idmanager.rev160406.CreateIdPoolInput;
  38 import org.opendaylight.yang.gen.v1.urn.opendaylight.genius.idmanager.rev160406.CreateIdPoolInputBuilder;
  39 import org.opendaylight.yang.gen.v1.urn.opendaylight.genius.idmanager.rev160406.IdManagerService;
  40 import org.opendaylight.yang.gen.v1.urn.opendaylight.genius.interfacemanager.rev160406.IfL2vlan;
  41 import org.opendaylight.yang.gen.v1.urn.opendaylight.netvirt.elan.etree.rev160614.EtreeInstance;
  42 import org.opendaylight.yang.gen.v1.urn.opendaylight.netvirt.elan.etree.rev160614.EtreeInstanceBuilder;
  43 import org.opendaylight.yang.gen.v1.urn.opendaylight.netvirt.elan.etree.rev160614.EtreeInterface;
  44 import org.opendaylight.yang.gen.v1.urn.opendaylight.netvirt.elan.etree.rev160614.EtreeInterface.EtreeInterfaceType;
  45 import org.opendaylight.yang.gen.v1.urn.opendaylight.netvirt.elan.etree.rev160614.EtreeInterfaceBuilder;
  46 import org.opendaylight.yang.gen.v1.urn.opendaylight.netvirt.elan.rev150602.ElanInstances;
  47 import org.opendaylight.yang.gen.v1.urn.opendaylight.netvirt.elan.rev150602.ElanInterfaces;
  48 import org.opendaylight.yang.gen.v1.urn.opendaylight.netvirt.elan.rev150602.elan._interface.forwarding.entries.ElanInterfaceMac;
  49 import org.opendaylight.yang.gen.v1.urn.opendaylight.netvirt.elan.rev150602.elan.dpn.interfaces.elan.dpn.interfaces.list.DpnInterfaces;
  50 import org.opendaylight.yang.gen.v1.urn.opendaylight.netvirt.elan.rev150602.elan.instances.ElanInstance;
  51 import org.opendaylight.yang.gen.v1.urn.opendaylight.netvirt.elan.rev150602.elan.instances.ElanInstanceBuilder;
  52 import org.opendaylight.yang.gen.v1.urn.opendaylight.netvirt.elan.rev150602.elan.instances.ElanInstanceKey;
  53 import org.opendaylight.yang.gen.v1.urn.opendaylight.netvirt.elan.rev150602.elan.interfaces.ElanInterface;
  54 import org.opendaylight.yang.gen.v1.urn.opendaylight.netvirt.elan.rev150602.elan.interfaces.ElanInterfaceBuilder;
  55 import org.opendaylight.yang.gen.v1.urn.opendaylight.netvirt.elan.rev150602.elan.interfaces.ElanInterfaceKey;
  56 import org.opendaylight.yang.gen.v1.urn.opendaylight.netvirt.elan.rev150602.elan.state.Elan;
  57 import org.opendaylight.yang.gen.v1.urn.opendaylight.netvirt.elan.rev150602.forwarding.entries.MacEntry;
  58 import org.opendaylight.yang.gen.v1.urn.tbd.params.xml.ns.yang.network.topology.rev131021.network.topology.topology.Node;
  59 import org.opendaylight.yangtools.yang.binding.InstanceIdentifier;
  60 import org.opendaylight.yangtools.yang.common.RpcResult;
  61 import org.slf4j.Logger;
  62 import org.slf4j.LoggerFactory;
  63
  64 public class ElanServiceProvider implements IElanService {
  65
  66     private static final Logger LOG = LoggerFactory.getLogger(ElanServiceProvider.class);
  67
  68     private final IdManagerService idManager;
  69     private final IInterfaceManager interfaceManager;
  70     private final ElanInstanceManager elanInstanceManager;
  71     private final ElanBridgeManager bridgeMgr;
  72     private final DataBroker broker;
  73     private final ElanStatusMonitor elanStatusMonitor;
  74     private static ElanUtils elanUtils;
  75
  76     private boolean generateIntBridgeMac = true;
  77
  78     public ElanServiceProvider(IdManagerService idManager, IInterfaceManager interfaceManager,
  79                                ElanInstanceManager elanInstanceManager, ElanBridgeManager bridgeMgr,
  80                                DataBroker dataBroker,
  81                                ElanInterfaceManager elanInterfaceManager,
  82                                ElanStatusMonitor elanStatusMonitor, ElanUtils elanUtils) {
  83         this.idManager = idManager;
  84         this.interfaceManager = interfaceManager;
  85         this.elanInstanceManager = elanInstanceManager;
  86         this.bridgeMgr = bridgeMgr;
  87         this.broker = dataBroker;
  88         this.elanStatusMonitor = elanStatusMonitor;
  89         this.elanUtils = elanUtils;
  90         elanInterfaceManager.setElanUtils(elanUtils);
  91     }
  92
  93     public void init() {
  94         LOG.info("Starting ElnaServiceProvider");
  95         elanStatusMonitor.reportStatus("STARTING");
  96         try {
  97             createIdPool();
  98
  99             elanStatusMonitor.reportStatus("OPERATIONAL");
 100         } catch (Exception e) {
 101             LOG.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                 LOG.debug("ELAN Id Pool is created successfully");
 113             }
 114         } catch (Exception e) {
 115             LOG.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                 LOG.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                 LOG.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             LOG.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                 LOG.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                 LOG.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             LOG.debug("Creating the new Etree Instance {}", elanInstance);
 174         }
 175         return isSuccess;
 176     }
 177
 178     @Override
 179     public EtreeInterface getEtreeInterfaceByElanInterfaceName(String elanInterface) {
 180         return ElanUtils.getEtreeInterfaceByElanInterfaceName(broker, elanInterface);
 181     }
 182
 183     public static boolean compareWithExistingElanInstance(ElanInstance existingElanInstance, long macTimeOut,
 184             String description) {
 185         boolean isEqual = false;
 186         if (existingElanInstance.getMacTimeout() == macTimeOut
 187                 && existingElanInstance.getDescription().equals(description)) {
 188             isEqual = true;
 189         }
 190         return isEqual;
 191     }
 192
 193     @Override
 194     public void updateElanInstance(String elanInstanceName, long newMacTimout, String newDescription) {
 195         createElanInstance(elanInstanceName, newMacTimout, newDescription);
 196     }
 197
 198     @Override
 199     public boolean deleteEtreeInstance(String etreeInstanceName) {
 200         return deleteElanInstance(etreeInstanceName);
 201     }
 202
 203     @Override
 204     public boolean deleteElanInstance(String elanInstanceName) {
 205         boolean isSuccess = false;
 206         ElanInstance existingElanInstance = elanInstanceManager.getElanInstanceByName(elanInstanceName);
 207         if (existingElanInstance == null) {
 208             LOG.debug("Elan Instance is not present {}", existingElanInstance);
 209             return isSuccess;
 210         }
 211         LOG.debug("Deletion of the existing Elan Instance {}", existingElanInstance);
 212         ElanUtils.delete(broker, LogicalDatastoreType.CONFIGURATION,
 213                 ElanUtils.getElanInstanceConfigurationDataPath(elanInstanceName));
 214         isSuccess = true;
 215         return isSuccess;
 216     }
 217
 218     @Override
 219     public void addEtreeInterface(String etreeInstanceName, String interfaceName, EtreeInterfaceType interfaceType,
 220             List<String> staticMacAddresses, String description) {
 221         ElanInstance existingElanInstance = elanInstanceManager.getElanInstanceByName(etreeInstanceName);
 222         if (existingElanInstance != null && existingElanInstance.getAugmentation(EtreeInstance.class) != null) {
 223             EtreeInterface etreeInterface = new EtreeInterfaceBuilder().setEtreeInterfaceType(interfaceType).build();
 224             ElanInterface elanInterface;
 225             if (staticMacAddresses == null) {
 226                 elanInterface = new ElanInterfaceBuilder().setElanInstanceName(etreeInstanceName)
 227                         .setDescription(description).setName(interfaceName).setKey(new ElanInterfaceKey(interfaceName))
 228                         .addAugmentation(EtreeInterface.class, etreeInterface).build();
 229             } else {
 230                 elanInterface = new ElanInterfaceBuilder().setElanInstanceName(etreeInstanceName)
 231                         .setDescription(description).setName(interfaceName)
 232                         .setStaticMacEntries(getPhysAddress(staticMacAddresses))
 233                         .setKey(new ElanInterfaceKey(interfaceName))
 234                         .addAugmentation(EtreeInterface.class, etreeInterface).build();
 235             }
 236             MDSALUtil.syncWrite(broker, LogicalDatastoreType.CONFIGURATION,
 237                     ElanUtils.getElanInterfaceConfigurationDataPathId(interfaceName), elanInterface);
 238             LOG.debug("Creating the new Etree Interface {}", elanInterface);
 239         }
 240     }
 241
 242     @Override
 243     public void addElanInterface(String elanInstanceName, String interfaceName, List<String> staticMacAddresses,
 244             String description) {
 245         ElanInstance existingElanInstance = elanInstanceManager.getElanInstanceByName(elanInstanceName);
 246         if (existingElanInstance != null) {
 247             ElanInterface elanInterface;
 248             if (staticMacAddresses == null) {
 249                 elanInterface = new ElanInterfaceBuilder().setElanInstanceName(elanInstanceName)
 250                         .setDescription(description).setName(interfaceName).setKey(new ElanInterfaceKey(interfaceName))
 251                         .build();
 252             } else {
 253                 elanInterface = new ElanInterfaceBuilder().setElanInstanceName(elanInstanceName)
 254                         .setDescription(description).setName(interfaceName)
 255                         .setStaticMacEntries(getPhysAddress(staticMacAddresses))
 256                         .setKey(new ElanInterfaceKey(interfaceName)).build();
 257             }
 258             MDSALUtil.syncWrite(broker, LogicalDatastoreType.CONFIGURATION,
 259                     ElanUtils.getElanInterfaceConfigurationDataPathId(interfaceName), elanInterface);
 260             LOG.debug("Creating the new ELan Interface {}", elanInterface);
 261         }
 262     }
 263
 264     @Override
 265     public void updateElanInterface(String elanInstanceName, String interfaceName,
 266             List<String> updatedStaticMacAddresses, String newDescription) {
 267         ElanInterface existingElanInterface = ElanUtils.getElanInterfaceByElanInterfaceName(broker, interfaceName);
 268         if (existingElanInterface == null) {
 269             return;
 270         }
 271         List<PhysAddress> existingMacAddress = existingElanInterface.getStaticMacEntries();
 272         List<PhysAddress> updatedMacAddresses = getPhysAddress(updatedStaticMacAddresses);
 273         List<PhysAddress> updatedPhysAddress = getUpdatedPhyAddress(existingMacAddress, updatedMacAddresses);
 274         if (updatedPhysAddress.size() > 0) {
 275             LOG.debug("updating the ElanInterface with new Mac Entries {}", updatedStaticMacAddresses);
 276             ElanInterface elanInterface = new ElanInterfaceBuilder().setElanInstanceName(elanInstanceName)
 277                     .setName(interfaceName).setDescription(newDescription).setStaticMacEntries(updatedPhysAddress)
 278                     .setKey(new ElanInterfaceKey(interfaceName)).build();
 279             MDSALUtil.syncWrite(broker, LogicalDatastoreType.CONFIGURATION,
 280                     ElanUtils.getElanInterfaceConfigurationDataPathId(interfaceName), elanInterface);
 281         }
 282     }
 283
 284     @Override
 285     public void deleteEtreeInterface(String elanInstanceName, String interfaceName) {
 286         deleteElanInterface(elanInstanceName, interfaceName);
 287         LOG.debug("deleting the Etree Interface {}", interfaceName);
 288     }
 289
 290     @Override
 291     public void deleteElanInterface(String elanInstanceName, String interfaceName) {
 292         ElanInterface existingElanInterface = ElanUtils.getElanInterfaceByElanInterfaceName(broker, interfaceName);
 293         if (existingElanInterface != null) {
 294             ElanUtils.delete(broker, LogicalDatastoreType.CONFIGURATION,
 295                     ElanUtils.getElanInterfaceConfigurationDataPathId(interfaceName));
 296             LOG.debug("deleting the Elan Interface {}", existingElanInterface);
 297         }
 298     }
 299
 300     @Override
 301     public void addStaticMacAddress(String elanInstanceName, String interfaceName, String macAddress) {
 302         ElanInterface existingElanInterface = ElanUtils.getElanInterfaceByElanInterfaceName(broker, interfaceName);
 303         PhysAddress updateStaticMacAddress = new PhysAddress(macAddress);
 304         if (existingElanInterface != null) {
 305             List<PhysAddress> existingMacAddress = existingElanInterface.getStaticMacEntries();
 306             if (existingMacAddress.contains(updateStaticMacAddress)) {
 307                 return;
 308             }
 309             existingMacAddress.add(updateStaticMacAddress);
 310             ElanInterface elanInterface = new ElanInterfaceBuilder().setElanInstanceName(elanInstanceName)
 311                     .setName(interfaceName).setStaticMacEntries(existingMacAddress)
 312                     .setDescription(existingElanInterface.getDescription()).setKey(new ElanInterfaceKey(interfaceName))
 313                     .build();
 314             MDSALUtil.syncWrite(broker, LogicalDatastoreType.CONFIGURATION,
 315                     ElanUtils.getElanInterfaceConfigurationDataPathId(interfaceName), elanInterface);
 316         }
 317     }
 318
 319     @Override
 320     public void deleteStaticMacAddress(String elanInstanceName, String interfaceName, String macAddress)
 321             throws MacNotFoundException {
 322         ElanInterface existingElanInterface = ElanUtils.getElanInterfaceByElanInterfaceName(broker, interfaceName);
 323         PhysAddress physAddress = new PhysAddress(macAddress);
 324         if (existingElanInterface == null) {
 325             return;
 326         }
 327         List<PhysAddress> existingMacAddress = existingElanInterface.getStaticMacEntries();
 328         if (existingMacAddress.contains(physAddress)) {
 329             existingMacAddress.remove(physAddress);
 330             ElanInterface elanInterface = new ElanInterfaceBuilder().setElanInstanceName(elanInstanceName)
 331                     .setName(interfaceName).setStaticMacEntries(existingMacAddress)
 332                     .setDescription(existingElanInterface.getDescription()).setKey(new ElanInterfaceKey(interfaceName))
 333                     .build();
 334             MDSALUtil.syncWrite(broker, LogicalDatastoreType.CONFIGURATION,
 335                     ElanUtils.getElanInterfaceConfigurationDataPathId(interfaceName), elanInterface);
 336         } else {
 337             throw new MacNotFoundException("deleteStaticMacAddress did not find MAC: " + macAddress);
 338         }
 339     }
 340
 341     @Override
 342     public Collection<MacEntry> getElanMacTable(String elanInstanceName) {
 343         Elan elanInfo = ElanUtils.getElanByName(broker, elanInstanceName);
 344         List<MacEntry> macAddress = new ArrayList<>();
 345         if (elanInfo == null) {
 346             return macAddress;
 347         }
 348         List<String> elanInterfaces = elanInfo.getElanInterfaces();
 349         if (elanInterfaces != null && elanInterfaces.size() > 0) {
 350             for (String elanInterface : elanInterfaces) {
 351                 ElanInterfaceMac elanInterfaceMac = elanUtils.getElanInterfaceMacByInterfaceName(elanInterface);
 352                 if (elanInterfaceMac != null && elanInterfaceMac.getMacEntry() != null
 353                         && elanInterfaceMac.getMacEntry().size() > 0) {
 354                     macAddress.addAll(elanInterfaceMac.getMacEntry());
 355                 }
 356             }
 357         }
 358         return macAddress;
 359     }
 360
 361     @Override
 362     public void flushMACTable(String elanInstanceName) {
 363         Elan elanInfo = ElanUtils.getElanByName(broker, elanInstanceName);
 364         if (elanInfo == null) {
 365             return;
 366         }
 367         List<String> elanInterfaces = elanInfo.getElanInterfaces();
 368         if (elanInterfaces == null || elanInterfaces.isEmpty()) {
 369             return;
 370         }
 371         for (String elanInterface : elanInterfaces) {
 372             ElanInterfaceMac elanInterfaceMac = elanUtils.getElanInterfaceMacByInterfaceName(elanInterface);
 373             if (elanInterfaceMac.getMacEntry() != null && elanInterfaceMac.getMacEntry().size() > 0) {
 374                 List<MacEntry> macEntries = elanInterfaceMac.getMacEntry();
 375                 for (MacEntry macEntry : macEntries) {
 376                     try {
 377                         deleteStaticMacAddress(elanInstanceName, elanInterface, macEntry.getMacAddress().getValue());
 378                     } catch (MacNotFoundException e) {
 379                         LOG.error("Mac Not Found Exception {}", e);
 380                         e.printStackTrace();
 381                     }
 382                 }
 383             }
 384         }
 385
 386     }
 387
 388     public static List<PhysAddress> getPhysAddress(List<String> macAddress) {
 389         List<PhysAddress> physAddresses = new ArrayList<>();
 390         for (String mac : macAddress) {
 391             physAddresses.add(new PhysAddress(mac));
 392         }
 393         return physAddresses;
 394     }
 395
 396     public List<PhysAddress> getUpdatedPhyAddress(List<PhysAddress> originalAddresses,
 397             List<PhysAddress> updatePhyAddresses) {
 398         if (updatePhyAddresses != null && !updatePhyAddresses.isEmpty()) {
 399             List<PhysAddress> existingClonedPhyAddress = new ArrayList<>();
 400             if (originalAddresses != null && !originalAddresses.isEmpty()) {
 401                 existingClonedPhyAddress.addAll(0, originalAddresses);
 402                 originalAddresses.removeAll(updatePhyAddresses);
 403                 updatePhyAddresses.removeAll(existingClonedPhyAddress);
 404             }
 405         }
 406         return updatePhyAddresses;
 407     }
 408
 409     @Override
 410     public ElanInstance getElanInstance(String elanName) {
 411         return ElanUtils.getElanInstanceByName(broker, elanName);
 412     }
 413
 414     @Override
 415     public List<ElanInstance> getElanInstances() {
 416         List<ElanInstance> elanList = new ArrayList<>();
 417         InstanceIdentifier<ElanInstances> elanInstancesIdentifier = InstanceIdentifier.builder(ElanInstances.class)
 418                 .build();
 419         Optional<ElanInstances> elansOptional = elanUtils.read(broker, LogicalDatastoreType.CONFIGURATION,
 420                 elanInstancesIdentifier);
 421         if (elansOptional.isPresent()) {
 422             elanList.addAll(elansOptional.get().getElanInstance());
 423         }
 424         return elanList;
 425     }
 426
 427     @Override
 428     public List<String> getElanInterfaces(String elanInstanceName) {
 429         List<String> elanInterfaces = new ArrayList<>();
 430         InstanceIdentifier<ElanInterfaces> elanInterfacesIdentifier = InstanceIdentifier.builder(ElanInterfaces.class)
 431                 .build();
 432         Optional<ElanInterfaces> elanInterfacesOptional = elanUtils.read(broker, LogicalDatastoreType.CONFIGURATION,
 433                 elanInterfacesIdentifier);
 434         if (!elanInterfacesOptional.isPresent()) {
 435             return elanInterfaces;
 436         }
 437         List<ElanInterface> elanInterfaceList = elanInterfacesOptional.get().getElanInterface();
 438         for (ElanInterface elanInterface : elanInterfaceList) {
 439             if (elanInterface.getElanInstanceName().equals(elanInstanceName)) {
 440                 elanInterfaces.add(elanInterface.getName());
 441             }
 442         }
 443         return elanInterfaces;
 444     }
 445
 446     public boolean getGenerateIntBridgeMac() {
 447         return generateIntBridgeMac;
 448     }
 449
 450     public void setGenerateIntBridgeMac(boolean generateIntBridgeMac) {
 451         this.generateIntBridgeMac = generateIntBridgeMac;
 452     }
 453
 454     @Override
 455     public void createExternalElanNetworks(Node node) {
 456         handleExternalElanNetworks(node, (elanInstance, interfaceName) -> {
 457             createExternalElanNetwork(elanInstance, interfaceName);
 458             return null;
 459         });
 460     }
 461
 462     @Override
 463     public void createExternalElanNetwork(ElanInstance elanInstance) {
 464         handleExternalElanNetwork(elanInstance, (elanInstance1, interfaceName) -> {
 465             createExternalElanNetwork(elanInstance1, interfaceName);
 466             return null;
 467         });
 468     }
 469
 470     @Override
 471     public void deleteExternalElanNetworks(Node node) {
 472         handleExternalElanNetworks(node, (elanInstance, interfaceName) -> {
 473             deleteExternalElanNetwork(elanInstance, interfaceName);
 474             return null;
 475         });
 476     }
 477
 478     @Override
 479     public void deleteExternalElanNetwork(ElanInstance elanInstance) {
 480         handleExternalElanNetwork(elanInstance, (elanInstance1, interfaceName) -> {
 481             deleteExternalElanNetwork(elanInstance1, interfaceName);
 482             return null;
 483         });
 484     }
 485
 486     @Override
 487     public void updateExternalElanNetworks(Node origNode, Node updatedNode) {
 488         if (!bridgeMgr.isIntegrationBridge(updatedNode)) {
 489             return;
 490         }
 491
 492         List<ElanInstance> elanInstances = getElanInstances();
 493         if (elanInstances == null || elanInstances.isEmpty()) {
 494             LOG.trace("No ELAN instances found");
 495             return;
 496         }
 497
 498         Optional<Map<String, String>> origProviderMapOpt = bridgeMgr.getOpenvswitchOtherConfigMap(origNode,
 499                 ElanBridgeManager.PROVIDER_MAPPINGS_KEY);
 500         Optional<Map<String, String>> updatedProviderMapOpt = bridgeMgr.getOpenvswitchOtherConfigMap(updatedNode,
 501                 ElanBridgeManager.PROVIDER_MAPPINGS_KEY);
 502         Map<String, String> origProviderMappping = origProviderMapOpt.or(Collections.emptyMap());
 503         Map<String, String> updatedProviderMappping = updatedProviderMapOpt.or(Collections.emptyMap());
 504
 505         for (ElanInstance elanInstance : elanInstances) {
 506             String physicalNetworkName = elanInstance.getPhysicalNetworkName();
 507             if (physicalNetworkName != null) {
 508                 String origPortName = origProviderMappping.get(physicalNetworkName);
 509                 String updatedPortName = updatedProviderMappping.get(physicalNetworkName);
 510                 if (origPortName != null && !origPortName.equals(updatedPortName)) {
 511                     deleteExternalElanNetwork(elanInstance, getExtInterfaceName(origNode, physicalNetworkName));
 512                 }
 513                 if (updatedPortName != null && !updatedPortName.equals(origPortName)) {
 514                     createExternalElanNetwork(elanInstance, getExtInterfaceName(updatedNode, updatedPortName));
 515                 }
 516             }
 517         }
 518     }
 519
 520     private void createExternalElanNetwork(ElanInstance elanInstance, String interfaceName) {
 521         if (interfaceName == null) {
 522             LOG.trace("No physial interface is attached to {}", elanInstance.getPhysicalNetworkName());
 523             return;
 524         }
 525
 526         String elanInterfaceName = createIetfInterfaces(elanInstance, interfaceName);
 527         addElanInterface(elanInstance.getElanInstanceName(), elanInterfaceName, null, null);
 528     }
 529
 530     private void deleteExternalElanNetwork(ElanInstance elanInstance, String interfaceName) {
 531         if (interfaceName == null) {
 532             LOG.trace("No physial interface is attached to {}", elanInstance.getPhysicalNetworkName());
 533             return;
 534         }
 535
 536         String elanInstanceName = elanInstance.getElanInstanceName();
 537         for (String elanInterface : getExternalElanInterfaces(elanInstanceName)) {
 538             if (elanInterface.startsWith(interfaceName)) {
 539                 deleteIetfInterface(elanInterface);
 540                 deleteElanInterface(elanInstanceName, elanInterface);
 541             }
 542         }
 543     }
 544
 545     @Override
 546     public String getExternalElanInterface(String elanInstanceName, BigInteger dpnId) {
 547         DpnInterfaces dpnInterfaces = elanUtils.getElanInterfaceInfoByElanDpn(elanInstanceName, dpnId);
 548         if (dpnInterfaces == null || dpnInterfaces.getInterfaces() == null) {
 549             LOG.trace("Elan {} does not have interfaces in DPN {}", elanInstanceName, dpnId);
 550             return null;
 551         }
 552
 553         for (String dpnInterface : dpnInterfaces.getInterfaces()) {
 554             if (elanUtils.isExternal(dpnInterface)) {
 555                 return dpnInterface;
 556             }
 557         }
 558
 559         LOG.trace("Elan {} does not have any external interace attached to DPN {}", elanInstanceName, dpnId);
 560         return null;
 561     }
 562
 563     @Override
 564     public Collection<String> getExternalElanInterfaces(String elanInstanceName) {
 565         List<String> elanInterfaces = getElanInterfaces(elanInstanceName);
 566         if (elanInterfaces == null || elanInterfaces.isEmpty()) {
 567             LOG.trace("No ELAN interfaces defined for {}", elanInstanceName);
 568             return Collections.emptySet();
 569         }
 570
 571         Set<String> externalElanInterfaces = new HashSet<>();
 572         for (String elanInterface : elanInterfaces) {
 573             if (elanUtils.isExternal(elanInterface)) {
 574                 externalElanInterfaces.add(elanInterface);
 575             }
 576         }
 577
 578         return externalElanInterfaces;
 579     }
 580
 581     @Override
 582     public boolean isExternalInterface(String interfaceName) {
 583         return elanUtils.isExternal(interfaceName);
 584     }
 585
 586     @Override
 587     public ElanInterface getElanInterfaceByElanInterfaceName(String interfaceName) {
 588         return ElanUtils.getElanInterfaceByElanInterfaceName(broker, interfaceName);
 589     }
 590
 591     /**
 592      * Create ietf-interfaces based on the ELAN segment type.<br>
 593      * For segment type flat - create transparent interface pointing to the
 594      * patch-port attached to the physnet port.<br>
 595      * For segment type vlan - create trunk interface pointing to the patch-port
 596      * attached to the physnet port + trunk-member interface pointing to the
 597      * trunk interface.
 598      *
 599      * @param elanInstance
 600      *            ELAN instance
 601      * @param parentRef
 602      *            parent interface name
 603      * @return the name of the interface to be added to the ELAN instance i.e.
 604      *         trunk-member name for vlan network and transparent for flat
 605      *         network or null otherwise
 606      */
 607     private String createIetfInterfaces(ElanInstance elanInstance, String parentRef) {
 608         String interfaceName = null;
 609
 610         try {
 611             if (ElanUtils.isFlat(elanInstance)) {
 612                 interfaceName = parentRef + IfmConstants.OF_URI_SEPARATOR + "flat";
 613                 interfaceManager.createVLANInterface(interfaceName, parentRef, null, null, null,
 614                         IfL2vlan.L2vlanMode.Transparent, true);
 615             } else if (ElanUtils.isVlan(elanInstance)) {
 616                 Long segmentationId = elanInstance.getSegmentationId();
 617                 interfaceName = parentRef + IfmConstants.OF_URI_SEPARATOR + segmentationId;
 618                 String trunkName = parentRef + IfmConstants.OF_URI_SEPARATOR + "trunk";
 619                 interfaceManager.createVLANInterface(trunkName, parentRef, null, null, null,
 620                         IfL2vlan.L2vlanMode.Trunk, true);
 621
 622                 interfaceManager.createVLANInterface(interfaceName, trunkName, null, segmentationId.intValue(), null,
 623                         IfL2vlan.L2vlanMode.TrunkMember, true);
 624             }
 625         } catch (InterfaceAlreadyExistsException e) {
 626             LOG.trace("Interface {} was already created", interfaceName);
 627         }
 628
 629         return interfaceName;
 630     }
 631
 632     private void deleteIetfInterface(String interfaceName) {
 633         InterfaceKey interfaceKey = new InterfaceKey(interfaceName);
 634         InstanceIdentifier<Interface> interfaceInstanceIdentifier = InstanceIdentifier.builder(Interfaces.class)
 635                 .child(Interface.class, interfaceKey).build();
 636         MDSALUtil.syncDelete(broker, LogicalDatastoreType.CONFIGURATION, interfaceInstanceIdentifier);
 637         LOG.debug("Deleting IETF interface {}", interfaceName);
 638     }
 639
 640     private String getExtInterfaceName(Node node, String physicalNetworkName) {
 641         if (physicalNetworkName == null) {
 642             return null;
 643         }
 644
 645         String providerMappingValue = bridgeMgr.getProviderMappingValue(node, physicalNetworkName);
 646         if (providerMappingValue == null) {
 647             LOG.trace("No provider mapping found for physicalNetworkName {} node {}", physicalNetworkName,
 648                     node.getNodeId().getValue());
 649             return null;
 650         }
 651
 652         return bridgeMgr.southboundUtils.getDataPathId(node) + IfmConstants.OF_URI_SEPARATOR
 653                 + bridgeMgr.getIntBridgePortNameFor(node, providerMappingValue);
 654     }
 655
 656     private void handleExternalElanNetworks(Node node, BiFunction<ElanInstance, String, Void> function) {
 657         if (!bridgeMgr.isIntegrationBridge(node)) {
 658             return;
 659         }
 660
 661         List<ElanInstance> elanInstances = getElanInstances();
 662         if (elanInstances == null || elanInstances.isEmpty()) {
 663             LOG.trace("No ELAN instances found");
 664             return;
 665         }
 666
 667         for (ElanInstance elanInstance : elanInstances) {
 668             String interfaceName = getExtInterfaceName(node, elanInstance.getPhysicalNetworkName());
 669             if (interfaceName != null) {
 670                 function.apply(elanInstance, interfaceName);
 671             }
 672         }
 673     }
 674
 675     private void handleExternalElanNetwork(ElanInstance elanInstance, BiFunction<ElanInstance, String, Void> function) {
 676         String elanInstanceName = elanInstance.getElanInstanceName();
 677         if (elanInstance.getPhysicalNetworkName() == null) {
 678             LOG.trace("No physical network attached to {}", elanInstanceName);
 679             return;
 680         }
 681
 682         List<Node> nodes = bridgeMgr.southboundUtils.getOvsdbNodes();
 683         if (nodes == null || nodes.isEmpty()) {
 684             LOG.trace("No OVS nodes found while creating external network for ELAN {}",
 685                     elanInstance.getElanInstanceName());
 686             return;
 687         }
 688
 689         for (Node node : nodes) {
 690             if (bridgeMgr.isIntegrationBridge(node)) {
 691                 String interfaceName = getExtInterfaceName(node, elanInstance.getPhysicalNetworkName());
 692                 function.apply(elanInstance, interfaceName);
 693             }
 694         }
 695     }
 696
 697 }