interfacemanager/interfacemanager-impl/src/main/java/org/opendaylight/genius/interfacemanager/commons/InterfaceMetaUtils.java

   1 /*
   2  * Copyright (c) 2016 Ericsson India Global Services Pvt Ltd. and others.  All rights reserved.
   3  *
   4  * This program and the accompanying materials are made available under the
   5  * terms of the Eclipse Public License v1.0 which accompanies this distribution,
   6  * and is available at http://www.eclipse.org/legal/epl-v10.html
   7  */
   8 package org.opendaylight.genius.interfacemanager.commons;
   9
  10 import java.math.BigInteger;
  11 import java.util.List;
  12 import java.util.concurrent.ConcurrentHashMap;
  13 import org.opendaylight.controller.md.sal.binding.api.DataBroker;
  14 import org.opendaylight.controller.md.sal.binding.api.WriteTransaction;
  15 import org.opendaylight.controller.md.sal.common.api.data.LogicalDatastoreType;
  16 import org.opendaylight.genius.interfacemanager.IfmConstants;
  17 import org.opendaylight.genius.interfacemanager.IfmUtil;
  18 import org.opendaylight.genius.interfacemanager.renderer.ovs.utilities.BatchingUtils;
  19 import org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.interfaces.rev140508.interfaces.Interface;
  20 import org.opendaylight.yang.gen.v1.urn.opendaylight.genius.idmanager.rev160406.IdManagerService;
  21 import org.opendaylight.yang.gen.v1.urn.opendaylight.genius.interfacemanager.meta.rev160406.BridgeInterfaceInfo;
  22 import org.opendaylight.yang.gen.v1.urn.opendaylight.genius.interfacemanager.meta.rev160406.BridgeRefInfo;
  23 import org.opendaylight.yang.gen.v1.urn.opendaylight.genius.interfacemanager.meta.rev160406.IfIndexesInterfaceMap;
  24 import org.opendaylight.yang.gen.v1.urn.opendaylight.genius.interfacemanager.meta.rev160406.InterfaceChildInfo;
  25 import org.opendaylight.yang.gen.v1.urn.opendaylight.genius.interfacemanager.meta.rev160406.TunnelInstanceInterfaceMap;
  26 import org.opendaylight.yang.gen.v1.urn.opendaylight.genius.interfacemanager.meta.rev160406._if.indexes._interface.map.IfIndexInterface;
  27 import org.opendaylight.yang.gen.v1.urn.opendaylight.genius.interfacemanager.meta.rev160406._if.indexes._interface.map.IfIndexInterfaceBuilder;
  28 import org.opendaylight.yang.gen.v1.urn.opendaylight.genius.interfacemanager.meta.rev160406._if.indexes._interface.map.IfIndexInterfaceKey;
  29 import org.opendaylight.yang.gen.v1.urn.opendaylight.genius.interfacemanager.meta.rev160406._interface.child.info.InterfaceParentEntry;
  30 import org.opendaylight.yang.gen.v1.urn.opendaylight.genius.interfacemanager.meta.rev160406._interface.child.info.InterfaceParentEntryKey;
  31 import org.opendaylight.yang.gen.v1.urn.opendaylight.genius.interfacemanager.meta.rev160406._interface.child.info._interface.parent.entry.InterfaceChildEntry;
  32 import org.opendaylight.yang.gen.v1.urn.opendaylight.genius.interfacemanager.meta.rev160406._interface.child.info._interface.parent.entry.InterfaceChildEntryKey;
  33 import org.opendaylight.yang.gen.v1.urn.opendaylight.genius.interfacemanager.meta.rev160406.bridge._interface.info.BridgeEntry;
  34 import org.opendaylight.yang.gen.v1.urn.opendaylight.genius.interfacemanager.meta.rev160406.bridge._interface.info.BridgeEntryBuilder;
  35 import org.opendaylight.yang.gen.v1.urn.opendaylight.genius.interfacemanager.meta.rev160406.bridge._interface.info.BridgeEntryKey;
  36 import org.opendaylight.yang.gen.v1.urn.opendaylight.genius.interfacemanager.meta.rev160406.bridge._interface.info.bridge.entry.BridgeInterfaceEntry;
  37 import org.opendaylight.yang.gen.v1.urn.opendaylight.genius.interfacemanager.meta.rev160406.bridge._interface.info.bridge.entry.BridgeInterfaceEntryBuilder;
  38 import org.opendaylight.yang.gen.v1.urn.opendaylight.genius.interfacemanager.meta.rev160406.bridge._interface.info.bridge.entry.BridgeInterfaceEntryKey;
  39 import org.opendaylight.yang.gen.v1.urn.opendaylight.genius.interfacemanager.meta.rev160406.bridge.ref.info.BridgeRefEntry;
  40 import org.opendaylight.yang.gen.v1.urn.opendaylight.genius.interfacemanager.meta.rev160406.bridge.ref.info.BridgeRefEntryBuilder;
  41 import org.opendaylight.yang.gen.v1.urn.opendaylight.genius.interfacemanager.meta.rev160406.bridge.ref.info.BridgeRefEntryKey;
  42 import org.opendaylight.yang.gen.v1.urn.opendaylight.genius.interfacemanager.meta.rev160406.tunnel.instance._interface.map.TunnelInstanceInterface;
  43 import org.opendaylight.yang.gen.v1.urn.opendaylight.genius.interfacemanager.meta.rev160406.tunnel.instance._interface.map.TunnelInstanceInterfaceBuilder;
  44 import org.opendaylight.yang.gen.v1.urn.opendaylight.genius.interfacemanager.meta.rev160406.tunnel.instance._interface.map.TunnelInstanceInterfaceKey;
  45 import org.opendaylight.yang.gen.v1.urn.opendaylight.genius.interfacemanager.rev160406.IfTunnel;
  46 import org.opendaylight.yang.gen.v1.urn.opendaylight.genius.interfacemanager.rev160406.ParentRefs;
  47 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.ovsdb.hwvtep.rev150901.hwvtep.physical._switch.attributes.Tunnels;
  48 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.ovsdb.rev150105.OvsdbBridgeAugmentation;
  49 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.ovsdb.rev150105.OvsdbBridgeRef;
  50 import org.opendaylight.yang.gen.v1.urn.tbd.params.xml.ns.yang.network.topology.rev131021.network.topology.topology.Node;
  51 import org.opendaylight.yangtools.yang.binding.InstanceIdentifier;
  52 import org.slf4j.Logger;
  53 import org.slf4j.LoggerFactory;
  54
  55 public class InterfaceMetaUtils {
  56     private static final Logger LOG = LoggerFactory.getLogger(InterfaceMetaUtils.class);
  57     private static ConcurrentHashMap<BigInteger, BridgeEntry> bridgeEntryMap = new ConcurrentHashMap();
  58     private static ConcurrentHashMap<BigInteger, BridgeRefEntry> bridgeRefEntryMap = new ConcurrentHashMap();
  59
  60     public static InstanceIdentifier<BridgeRefEntry> getBridgeRefEntryIdentifier(BridgeRefEntryKey bridgeRefEntryKey) {
  61         InstanceIdentifier.InstanceIdentifierBuilder<BridgeRefEntry> bridgeRefEntryInstanceIdentifierBuilder =
  62                 InstanceIdentifier.builder(BridgeRefInfo.class)
  63                         .child(BridgeRefEntry.class, bridgeRefEntryKey);
  64         return bridgeRefEntryInstanceIdentifierBuilder.build();
  65     }
  66
  67     public static BridgeRefEntry getBridgeRefEntryFromOperDS(BigInteger dpId, DataBroker dataBroker) {
  68         BridgeRefEntry bridgeRefEntry = getBridgeRefEntryFromCache(dpId);
  69         if(bridgeRefEntry != null) {
  70             return bridgeRefEntry;
  71         }
  72         BridgeRefEntryKey bridgeRefEntryKey = new BridgeRefEntryKey(dpId);
  73         InstanceIdentifier<BridgeRefEntry> bridgeRefEntryIid = InterfaceMetaUtils
  74                 .getBridgeRefEntryIdentifier(bridgeRefEntryKey);
  75         bridgeRefEntry = IfmUtil.read(LogicalDatastoreType.OPERATIONAL, bridgeRefEntryIid, dataBroker).orNull();
  76         if(bridgeRefEntry != null) {
  77             addBridgeRefEntryToCache(dpId, bridgeRefEntry);
  78         }
  79         return bridgeRefEntry;
  80     }
  81
  82     public static OvsdbBridgeRef getOvsdbBridgeRef(BigInteger dpId, DataBroker dataBroker) {
  83
  84         BridgeRefEntry bridgeRefEntry = getBridgeRefEntryFromOperDS(dpId, dataBroker);
  85
  86         if(bridgeRefEntry == null){
  87             // bridge ref entry will be null if the bridge is disconnected from controller.
  88             // In that case, fetch bridge reference from bridge interface entry config DS
  89             BridgeEntry bridgeEntry = getBridgeEntryFromConfigDS(dpId, dataBroker);
  90             if(bridgeEntry == null){
  91                 return null;
  92             }
  93             return  bridgeEntry.getBridgeReference();
  94         }
  95         return bridgeRefEntry.getBridgeReference();
  96     }
  97
  98     public static BridgeRefEntry getBridgeReferenceForInterface(Interface interfaceInfo,
  99                                                                 DataBroker dataBroker) {
 100         ParentRefs parentRefs = interfaceInfo.getAugmentation(ParentRefs.class);
 101         BigInteger dpn = parentRefs.getDatapathNodeIdentifier();
 102         return getBridgeRefEntryFromOperDS(dpn, dataBroker);
 103     }
 104
 105     public static boolean bridgeExists(BridgeRefEntry bridgeRefEntry,
 106                                        DataBroker dataBroker) {
 107         if (bridgeRefEntry != null && bridgeRefEntry.getBridgeReference() != null) {
 108             InstanceIdentifier<OvsdbBridgeAugmentation> bridgeIid =
 109                     (InstanceIdentifier<OvsdbBridgeAugmentation>) bridgeRefEntry.getBridgeReference().getValue();
 110             return IfmUtil.read(LogicalDatastoreType.OPERATIONAL, bridgeIid, dataBroker).isPresent();
 111         }
 112         return false;
 113     }
 114     public static InstanceIdentifier<BridgeEntry> getBridgeEntryIdentifier(BridgeEntryKey bridgeEntryKey) {
 115         InstanceIdentifier.InstanceIdentifierBuilder<BridgeEntry> bridgeEntryIdBuilder =
 116                 InstanceIdentifier.builder(BridgeInterfaceInfo.class).child(BridgeEntry.class, bridgeEntryKey);
 117         return bridgeEntryIdBuilder.build();
 118     }
 119
 120     public static BridgeEntry getBridgeEntryFromConfigDS(BigInteger dpnId,
 121                                                          DataBroker dataBroker) {
 122         BridgeEntry bridgeEntry = getBridgeEntryFromCache(dpnId);
 123         if(bridgeEntry != null) {
 124             return bridgeEntry;
 125         }
 126         BridgeEntryKey bridgeEntryKey = new BridgeEntryKey(dpnId);
 127         InstanceIdentifier<BridgeEntry> bridgeEntryInstanceIdentifier =
 128                 InterfaceMetaUtils.getBridgeEntryIdentifier(bridgeEntryKey);
 129         LOG.debug("Trying to retrieve bridge entry from config for Id: {}", bridgeEntryInstanceIdentifier);
 130         bridgeEntry = readBridgeEntryFromConfigDS(bridgeEntryInstanceIdentifier,
 131                 dataBroker);
 132         if(bridgeEntry != null) {
 133             addBridgeEntryToCache(dpnId, bridgeEntry);
 134         }
 135         return bridgeEntry;
 136     }
 137
 138     private static BridgeEntry readBridgeEntryFromConfigDS(InstanceIdentifier<BridgeEntry> bridgeEntryInstanceIdentifier,
 139                                                          DataBroker dataBroker) {
 140         return IfmUtil.read(LogicalDatastoreType.CONFIGURATION, bridgeEntryInstanceIdentifier, dataBroker).orNull();
 141     }
 142
 143     public static BridgeEntry getBridgeEntryFromConfigDS(InstanceIdentifier<BridgeEntry> bridgeEntryInstanceIdentifier,
 144                                                          DataBroker dataBroker) {
 145         BigInteger dpnId = bridgeEntryInstanceIdentifier.firstKeyOf(BridgeEntry.class).getDpid();
 146         return getBridgeEntryFromConfigDS(dpnId, dataBroker);
 147     }
 148
 149     public static InstanceIdentifier<BridgeInterfaceEntry> getBridgeInterfaceEntryIdentifier(BridgeEntryKey bridgeEntryKey,
 150                                                                                              BridgeInterfaceEntryKey bridgeInterfaceEntryKey) {
 151         return InstanceIdentifier.builder(BridgeInterfaceInfo.class)
 152                 .child(BridgeEntry.class, bridgeEntryKey)
 153                 .child(BridgeInterfaceEntry.class, bridgeInterfaceEntryKey).build();
 154
 155     }
 156
 157     public static void createBridgeInterfaceEntryInConfigDS(BigInteger dpId,
 158                                                             String childInterface) {
 159         BridgeEntryKey bridgeEntryKey = new BridgeEntryKey(dpId);
 160         BridgeInterfaceEntryKey bridgeInterfaceEntryKey = new BridgeInterfaceEntryKey(childInterface);
 161         InstanceIdentifier<BridgeInterfaceEntry> bridgeInterfaceEntryIid =
 162                 InterfaceMetaUtils.getBridgeInterfaceEntryIdentifier(bridgeEntryKey, bridgeInterfaceEntryKey);
 163         BridgeInterfaceEntryBuilder entryBuilder = new BridgeInterfaceEntryBuilder().setKey(bridgeInterfaceEntryKey)
 164                 .setInterfaceName(childInterface);
 165         BatchingUtils.write(bridgeInterfaceEntryIid, entryBuilder.build(), BatchingUtils.EntityType.DEFAULT_CONFIG);
 166     }
 167
 168     public static InstanceIdentifier<InterfaceParentEntry> getInterfaceParentEntryIdentifier(
 169             InterfaceParentEntryKey interfaceParentEntryKey) {
 170         InstanceIdentifier.InstanceIdentifierBuilder<InterfaceParentEntry> intfIdBuilder =
 171                 InstanceIdentifier.builder(InterfaceChildInfo.class)
 172                         .child(InterfaceParentEntry.class, interfaceParentEntryKey);
 173         return intfIdBuilder.build();
 174     }
 175
 176     public static InstanceIdentifier<InterfaceChildEntry> getInterfaceChildEntryIdentifier(
 177             InterfaceParentEntryKey interfaceParentEntryKey, InterfaceChildEntryKey interfaceChildEntryKey) {
 178         InstanceIdentifier.InstanceIdentifierBuilder<InterfaceChildEntry> intfIdBuilder =
 179                 InstanceIdentifier.builder(InterfaceChildInfo.class)
 180                         .child(InterfaceParentEntry.class, interfaceParentEntryKey)
 181                         .child(InterfaceChildEntry.class, interfaceChildEntryKey);
 182         return intfIdBuilder.build();
 183     }
 184
 185     public static InterfaceParentEntry getInterfaceParentEntryFromConfigDS(
 186             String interfaceName, DataBroker dataBroker) {
 187         InterfaceParentEntryKey interfaceParentEntryKey = new InterfaceParentEntryKey(interfaceName);
 188         InterfaceParentEntry interfaceParentEntry =
 189                 InterfaceMetaUtils.getInterfaceParentEntryFromConfigDS(interfaceParentEntryKey, dataBroker);
 190         return interfaceParentEntry;
 191     }
 192
 193     public static InterfaceParentEntry getInterfaceParentEntryFromConfigDS(
 194             InterfaceParentEntryKey interfaceParentEntryKey, DataBroker dataBroker) {
 195         InstanceIdentifier<InterfaceParentEntry> intfParentIid =
 196                 getInterfaceParentEntryIdentifier(interfaceParentEntryKey);
 197
 198         return getInterfaceParentEntryFromConfigDS(intfParentIid, dataBroker);
 199     }
 200
 201     public static InterfaceParentEntry getInterfaceParentEntryFromConfigDS(
 202             InstanceIdentifier<InterfaceParentEntry> intfId, DataBroker dataBroker) {
 203         return IfmUtil.read(LogicalDatastoreType.CONFIGURATION, intfId, dataBroker).orNull();
 204     }
 205
 206     public static InterfaceChildEntry getInterfaceChildEntryFromConfigDS(InterfaceParentEntryKey interfaceParentEntryKey,
 207                                                                          InterfaceChildEntryKey interfaceChildEntryKey,
 208                                                                          DataBroker dataBroker) {
 209         InstanceIdentifier<InterfaceChildEntry> intfChildIid =
 210                 getInterfaceChildEntryIdentifier(interfaceParentEntryKey, interfaceChildEntryKey);
 211
 212         return getInterfaceChildEntryFromConfigDS(intfChildIid, dataBroker);
 213     }
 214
 215     public static InterfaceChildEntry getInterfaceChildEntryFromConfigDS(
 216             InstanceIdentifier<InterfaceChildEntry> intfChildIid, DataBroker dataBroker) {
 217         return IfmUtil.read(LogicalDatastoreType.CONFIGURATION, intfChildIid, dataBroker).orNull();
 218     }
 219
 220     public static void createLportTagInterfaceMap(WriteTransaction t, String infName, Integer ifIndex) {
 221         LOG.debug("creating lport tag to interface map for {}",infName);
 222         InstanceIdentifier<IfIndexInterface> id = InstanceIdentifier.builder(IfIndexesInterfaceMap.class).child(IfIndexInterface.class, new IfIndexInterfaceKey(ifIndex)).build();
 223         IfIndexInterface ifIndexInterface = new IfIndexInterfaceBuilder().setIfIndex(ifIndex).setKey(new IfIndexInterfaceKey(ifIndex)).setInterfaceName(infName).build();
 224         t.put(LogicalDatastoreType.OPERATIONAL, id, ifIndexInterface, true);
 225     }
 226
 227     public static void removeLportTagInterfaceMap(IdManagerService idManager, WriteTransaction t, String infName) {
 228         // workaround to get the id to remove from lport tag interface map
 229         Integer ifIndex = IfmUtil.allocateId(idManager, IfmConstants.IFM_IDPOOL_NAME, infName);
 230         IfmUtil.releaseId(idManager, IfmConstants.IFM_IDPOOL_NAME, infName);
 231         LOG.debug("removing lport tag to interface map for {}",infName);
 232         InstanceIdentifier<IfIndexInterface> id = InstanceIdentifier.builder(IfIndexesInterfaceMap.class).child(IfIndexInterface.class, new IfIndexInterfaceKey(ifIndex)).build();
 233         t.delete(LogicalDatastoreType.OPERATIONAL, id);
 234     }
 235
 236     public static void addBridgeRefToBridgeInterfaceEntry(BigInteger dpId, OvsdbBridgeRef ovsdbBridgeRef, WriteTransaction t){
 237         BridgeEntryKey bridgeEntryKey = new BridgeEntryKey(dpId);
 238         InstanceIdentifier<BridgeEntry> bridgeEntryInstanceIdentifier = getBridgeEntryIdentifier(bridgeEntryKey);
 239
 240         BridgeEntryBuilder bridgeEntryBuilder =
 241                 new BridgeEntryBuilder().setKey(bridgeEntryKey).setBridgeReference(ovsdbBridgeRef);
 242         t.merge(LogicalDatastoreType.CONFIGURATION, bridgeEntryInstanceIdentifier, bridgeEntryBuilder.build(), true);
 243     }
 244
 245     public static void createBridgeRefEntry(BigInteger dpnId, InstanceIdentifier<?> bridgeIid,
 246                                             WriteTransaction tx){
 247         LOG.debug("Creating bridge ref entry for dpn: {} bridge: {}",
 248                 dpnId, bridgeIid);
 249         BridgeRefEntryKey bridgeRefEntryKey = new BridgeRefEntryKey(dpnId);
 250         InstanceIdentifier<BridgeRefEntry> bridgeEntryId =
 251                 InterfaceMetaUtils.getBridgeRefEntryIdentifier(bridgeRefEntryKey);
 252         BridgeRefEntryBuilder tunnelDpnBridgeEntryBuilder =
 253                 new BridgeRefEntryBuilder().setKey(bridgeRefEntryKey).setDpid(dpnId)
 254                         .setBridgeReference(new OvsdbBridgeRef(bridgeIid));
 255         tx.put(LogicalDatastoreType.OPERATIONAL, bridgeEntryId, tunnelDpnBridgeEntryBuilder.build(), true);
 256     }
 257     public static void deleteBridgeRefEntry(BigInteger dpnId,
 258                                             WriteTransaction tx) {
 259         LOG.debug("Deleting bridge ref entry for dpn: {}",
 260                 dpnId);
 261         BridgeRefEntryKey bridgeRefEntryKey = new BridgeRefEntryKey(dpnId);
 262         InstanceIdentifier<BridgeRefEntry> bridgeEntryId =
 263                 InterfaceMetaUtils.getBridgeRefEntryIdentifier(bridgeRefEntryKey);
 264         tx.delete(LogicalDatastoreType.OPERATIONAL, bridgeEntryId);
 265     }
 266
 267     public static void createTunnelToInterfaceMap(String tunnelInstanceId,
 268                                                   String infName,
 269                                                   WriteTransaction transaction) {
 270         LOG.debug("creating tunnel instance identifier to interface map for {}",infName);
 271         InstanceIdentifier<TunnelInstanceInterface> id = InstanceIdentifier.builder(TunnelInstanceInterfaceMap.class).
 272                 child(TunnelInstanceInterface.class, new TunnelInstanceInterfaceKey(tunnelInstanceId)).build();
 273         TunnelInstanceInterface tunnelInstanceInterface = new TunnelInstanceInterfaceBuilder().
 274                 setTunnelInstanceIdentifier(tunnelInstanceId).setKey(new TunnelInstanceInterfaceKey(tunnelInstanceId)).setInterfaceName(infName).build();
 275         transaction.put(LogicalDatastoreType.OPERATIONAL, id, tunnelInstanceInterface, true);
 276
 277     }
 278
 279     public static void createTunnelToInterfaceMap(String infName,InstanceIdentifier<Node> nodeId,
 280                                                   WriteTransaction transaction,
 281                                                   IfTunnel ifTunnel){
 282         InstanceIdentifier<Tunnels> tunnelsInstanceIdentifier = org.opendaylight.genius.interfacemanager.renderer.hwvtep.utilities.SouthboundUtils.
 283                 createTunnelsInstanceIdentifier(nodeId,
 284                         ifTunnel.getTunnelSource(), ifTunnel.getTunnelDestination());
 285         createTunnelToInterfaceMap(tunnelsInstanceIdentifier.toString(), infName, transaction);
 286     }
 287
 288     public static void removeTunnelToInterfaceMap(InstanceIdentifier<Node> nodeId,
 289                                                   WriteTransaction transaction,
 290                                                   IfTunnel ifTunnel){
 291         InstanceIdentifier<Tunnels> tunnelsInstanceIdentifier = org.opendaylight.genius.interfacemanager.renderer.hwvtep.utilities.SouthboundUtils.
 292                 createTunnelsInstanceIdentifier(nodeId,
 293                         ifTunnel.getTunnelSource(), ifTunnel.getTunnelDestination());
 294         transaction.delete(LogicalDatastoreType.OPERATIONAL, tunnelsInstanceIdentifier);
 295     }
 296
 297     public static String getInterfaceForTunnelInstanceIdentifier(String tunnelInstanceId,
 298                                                                  DataBroker dataBroker) {
 299         InstanceIdentifier<TunnelInstanceInterface> id = InstanceIdentifier.builder(TunnelInstanceInterfaceMap.class).
 300                 child(TunnelInstanceInterface.class, new TunnelInstanceInterfaceKey(tunnelInstanceId)).build();
 301         return IfmUtil.read(LogicalDatastoreType.OPERATIONAL, id, dataBroker).transform(
 302                 TunnelInstanceInterface::getInterfaceName).orNull();
 303     }
 304
 305     public static void deleteBridgeInterfaceEntry(BridgeEntryKey bridgeEntryKey, List<BridgeInterfaceEntry> bridgeInterfaceEntries,
 306                                                   InstanceIdentifier<BridgeEntry> bridgeEntryIid,
 307                                                   WriteTransaction transaction, String interfaceName){
 308         BridgeInterfaceEntryKey bridgeInterfaceEntryKey =
 309                 new BridgeInterfaceEntryKey(interfaceName);
 310         InstanceIdentifier<BridgeInterfaceEntry> bridgeInterfaceEntryIid =
 311                 InterfaceMetaUtils.getBridgeInterfaceEntryIdentifier(bridgeEntryKey,
 312                         bridgeInterfaceEntryKey);
 313
 314         if (bridgeInterfaceEntries.size() <= 1) {
 315             transaction.delete(LogicalDatastoreType.CONFIGURATION, bridgeEntryIid);
 316         } else {
 317             // No point deleting interface individually if bridge entry is being deleted
 318             // Note: Will this cause issue in listener code? Does it expect separate notifications for two?
 319             transaction.delete(LogicalDatastoreType.CONFIGURATION, bridgeInterfaceEntryIid);
 320         }
 321     }
 322
 323     // Cache Util methods
 324
 325     // Start: BridgeEntryCache
 326     public static void addBridgeEntryToCache(BigInteger dpnId, BridgeEntry bridgeEntry) {
 327         bridgeEntryMap.put(dpnId, bridgeEntry);
 328     }
 329
 330     public static void addBridgeEntryToCache(BridgeEntry bridgeEntry) {
 331         addBridgeEntryToCache(bridgeEntry.getKey().getDpid(), bridgeEntry);
 332     }
 333
 334     public static void removeFromBridgeEntryCache(BigInteger dpnId) {
 335         bridgeEntryMap.remove(dpnId);
 336     }
 337
 338     public static void removeFromBridgeEntryCache(BridgeEntry bridgeEntry) {
 339         removeFromBridgeEntryCache(bridgeEntry.getKey().getDpid());
 340     }
 341
 342     public static BridgeEntry getBridgeEntryFromCache(BigInteger dpnId) {
 343         return bridgeEntryMap.get(dpnId);
 344     }
 345     // End: Bridge Entry Cache
 346
 347     //Start: BridgeRefEntry Cache
 348     public static void addBridgeRefEntryToCache(BigInteger dpnId, BridgeRefEntry bridgeRefEntry) {
 349         bridgeRefEntryMap.put(dpnId, bridgeRefEntry);
 350     }
 351
 352     public static void addBridgeRefEntryToCache(BridgeRefEntry bridgeRefEntry) {
 353         addBridgeRefEntryToCache(bridgeRefEntry.getKey().getDpid(), bridgeRefEntry);
 354     }
 355
 356     public static void removeFromBridgeRefEntryCache(BigInteger dpnId) {
 357         bridgeRefEntryMap.remove(dpnId);
 358     }
 359
 360     public static void removeFromBridgeRefEntryCache(BridgeRefEntry bridgeRefEntry) {
 361         removeFromBridgeRefEntryCache(bridgeRefEntry.getKey().getDpid());
 362     }
 363
 364     public static BridgeRefEntry getBridgeRefEntryFromCache(BigInteger dpnId) {
 365         return bridgeRefEntryMap.get(dpnId);
 366     }
 367 }