mdsalutil/mdsalutil-api/src/main/java/org/opendaylight/vpnservice/mdsalutil/MDSALUtil.java

   1 /*
   2  * Copyright (c) 2015 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.vpnservice.mdsalutil;
  10
  11 import java.math.BigInteger;
  12 import java.util.ArrayList;
  13 import java.util.HashMap;
  14 import java.util.List;
  15 import java.util.Map;
  16 import java.util.concurrent.ConcurrentHashMap;
  17 import java.util.concurrent.ExecutionException;
  18 import java.util.concurrent.LinkedBlockingQueue;
  19
  20 import org.opendaylight.controller.md.sal.binding.api.DataBroker;
  21 import org.opendaylight.controller.md.sal.binding.api.ReadOnlyTransaction;
  22 import org.opendaylight.controller.md.sal.common.api.data.LogicalDatastoreType;
  23 import org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.yang.types.rev100924.MacAddress;
  24 import org.opendaylight.yang.gen.v1.urn.opendaylight.action.types.rev131112.action.action.PopVlanActionCaseBuilder;
  25 import org.opendaylight.yang.gen.v1.urn.opendaylight.action.types.rev131112.action.action.pop.vlan.action._case.PopVlanActionBuilder;
  26 import org.opendaylight.yang.gen.v1.urn.opendaylight.action.types.rev131112.action.list.ActionBuilder;
  27 import org.opendaylight.yang.gen.v1.urn.opendaylight.action.types.rev131112.action.list.ActionKey;
  28 import org.opendaylight.yang.gen.v1.urn.opendaylight.flow.types.rev131026.FlowCookie;
  29 import org.opendaylight.yang.gen.v1.urn.opendaylight.action.types.rev131112.action.list.Action;
  30 import org.opendaylight.yang.gen.v1.urn.opendaylight.flow.inventory.rev130819.FlowId;
  31 import org.opendaylight.yang.gen.v1.urn.opendaylight.flow.inventory.rev130819.tables.table.Flow;
  32 import org.opendaylight.yang.gen.v1.urn.opendaylight.flow.inventory.rev130819.tables.table.FlowBuilder;
  33 import org.opendaylight.yang.gen.v1.urn.opendaylight.flow.inventory.rev130819.tables.table.FlowKey;
  34 import org.opendaylight.yang.gen.v1.urn.opendaylight.flow.types.rev131026.FlowModFlags;
  35 import org.opendaylight.yang.gen.v1.urn.opendaylight.flow.types.rev131026.flow.Instructions;
  36 import org.opendaylight.yang.gen.v1.urn.opendaylight.flow.types.rev131026.flow.InstructionsBuilder;
  37 import org.opendaylight.yang.gen.v1.urn.opendaylight.flow.types.rev131026.flow.Match;
  38 import org.opendaylight.yang.gen.v1.urn.opendaylight.flow.types.rev131026.flow.MatchBuilder;
  39 import org.opendaylight.yang.gen.v1.urn.opendaylight.flow.types.rev131026.instruction.instruction.ApplyActionsCase;
  40 import org.opendaylight.yang.gen.v1.urn.opendaylight.flow.types.rev131026.instruction.instruction.ApplyActionsCaseBuilder;
  41 import org.opendaylight.yang.gen.v1.urn.opendaylight.flow.types.rev131026.instruction.instruction.WriteMetadataCaseBuilder;
  42 import org.opendaylight.yang.gen.v1.urn.opendaylight.flow.types.rev131026.instruction.instruction.apply.actions._case.ApplyActions;
  43 import org.opendaylight.yang.gen.v1.urn.opendaylight.flow.types.rev131026.instruction.instruction.apply.actions._case.ApplyActionsBuilder;
  44 import org.opendaylight.yang.gen.v1.urn.opendaylight.flow.types.rev131026.instruction.instruction.write.metadata._case.WriteMetadataBuilder;
  45 import org.opendaylight.yang.gen.v1.urn.opendaylight.flow.types.rev131026.instruction.list.Instruction;
  46 import org.opendaylight.yang.gen.v1.urn.opendaylight.flow.types.rev131026.instruction.list.InstructionBuilder;
  47 import org.opendaylight.yang.gen.v1.urn.opendaylight.flow.types.rev131026.instruction.list.InstructionKey;
  48 import org.opendaylight.yang.gen.v1.urn.opendaylight.group.types.rev131018.BucketId;
  49 import org.opendaylight.yang.gen.v1.urn.opendaylight.group.types.rev131018.GroupId;
  50 import org.opendaylight.yang.gen.v1.urn.opendaylight.group.types.rev131018.GroupTypes;
  51 import org.opendaylight.yang.gen.v1.urn.opendaylight.group.types.rev131018.group.Buckets;
  52 import org.opendaylight.yang.gen.v1.urn.opendaylight.group.types.rev131018.group.BucketsBuilder;
  53 import org.opendaylight.yang.gen.v1.urn.opendaylight.group.types.rev131018.group.buckets.Bucket;
  54 import org.opendaylight.yang.gen.v1.urn.opendaylight.group.types.rev131018.group.buckets.BucketBuilder;
  55 import org.opendaylight.yang.gen.v1.urn.opendaylight.group.types.rev131018.groups.Group;
  56 import org.opendaylight.yang.gen.v1.urn.opendaylight.group.types.rev131018.groups.GroupBuilder;
  57 import org.opendaylight.yang.gen.v1.urn.opendaylight.group.types.rev131018.groups.GroupKey;
  58 import org.opendaylight.yang.gen.v1.urn.opendaylight.inventory.rev130819.NodeConnectorId;
  59 import org.opendaylight.yang.gen.v1.urn.opendaylight.inventory.rev130819.NodeConnectorRef;
  60 import org.opendaylight.yang.gen.v1.urn.opendaylight.inventory.rev130819.NodeId;
  61 import org.opendaylight.yang.gen.v1.urn.opendaylight.inventory.rev130819.NodeRef;
  62 import org.opendaylight.yang.gen.v1.urn.opendaylight.inventory.rev130819.Nodes;
  63 import org.opendaylight.yang.gen.v1.urn.opendaylight.inventory.rev130819.node.NodeConnector;
  64 import org.opendaylight.yang.gen.v1.urn.opendaylight.inventory.rev130819.node.NodeConnectorKey;
  65 import org.opendaylight.yang.gen.v1.urn.opendaylight.inventory.rev130819.nodes.Node;
  66 import org.opendaylight.yang.gen.v1.urn.opendaylight.inventory.rev130819.nodes.NodeKey;
  67 import org.opendaylight.yang.gen.v1.urn.opendaylight.packet.service.rev130709.TransmitPacketInput;
  68 import org.opendaylight.yang.gen.v1.urn.opendaylight.packet.service.rev130709.TransmitPacketInputBuilder;
  69 import org.opendaylight.yangtools.yang.binding.DataObject;
  70 import org.opendaylight.yangtools.yang.binding.InstanceIdentifier;
  71 import org.opendaylight.yangtools.yang.binding.InstanceIdentifier.InstanceIdentifierBuilder;
  72 import org.opendaylight.yangtools.yang.binding.DataObject;
  73 import org.opendaylight.controller.md.sal.common.api.data.LogicalDatastoreType;
  74 import org.opendaylight.controller.md.sal.binding.api.WriteTransaction;
  75 import org.opendaylight.controller.md.sal.binding.api.ReadOnlyTransaction;
  76 import org.opendaylight.controller.md.sal.binding.api.DataBroker;
  77 import org.opendaylight.controller.md.sal.common.api.data.TransactionCommitFailedException;
  78 import org.slf4j.Logger;
  79 import org.slf4j.LoggerFactory;
  80 import org.opendaylight.yang.gen.v1.urn.opendaylight.flow.inventory.rev130819.FlowCapableNodeConnector;
  81 import org.opendaylight.controller.liblldp.HexEncode;
  82 import com.google.common.base.Joiner;
  83 import com.google.common.base.Optional;
  84 import com.google.common.primitives.Bytes;
  85 import com.google.common.primitives.Ints;
  86 import com.google.common.util.concurrent.CheckedFuture;
  87
  88 public class MDSALUtil {
  89
  90     public static final String NODE_PREFIX = "openflow";
  91     public static final String SEPARATOR = ":";
  92     private static final Buckets EMPTY_Buckets = new BucketsBuilder().build();
  93     private static final Instructions EMPTY_Instructions = new InstructionsBuilder().setInstruction(
  94             new ArrayList<Instruction>()).build();
  95     private static final Match EMPTY_Matches = new MatchBuilder().build();
  96     private static final Logger logger = LoggerFactory.getLogger(MDSALUtil.class);
  97
  98     public static FlowEntity buildFlowEntity(BigInteger dpnId, short tableId, String flowId, int priority, String flowName,
  99             int idleTimeOut, int hardTimeOut, BigInteger cookie, List<MatchInfo> listMatchInfo,
 100             List<InstructionInfo> listInstructionInfo) {
 101
 102         FlowEntity flowEntity = new FlowEntity(dpnId);
 103
 104         flowEntity.setTableId(tableId);
 105         flowEntity.setFlowId(flowId);
 106         flowEntity.setPriority(priority);
 107         flowEntity.setFlowName(flowName);
 108         flowEntity.setIdleTimeOut(idleTimeOut);
 109         flowEntity.setHardTimeOut(hardTimeOut);
 110         flowEntity.setCookie(cookie);
 111         flowEntity.setMatchInfoList(listMatchInfo);
 112         flowEntity.setInstructionInfoList(listInstructionInfo);
 113
 114         return flowEntity;
 115     }
 116
 117     // TODO: CHECK IF THIS IS USED
 118     public static Flow buildFlow(short tableId, String flowId, int priority, String flowName, int idleTimeOut,
 119             int hardTimeOut, BigInteger cookie, List<MatchInfo> listMatchInfo, List<InstructionInfo> listInstructionInfo) {
 120         return MDSALUtil.buildFlow(tableId, flowId, priority, flowName, idleTimeOut, hardTimeOut, cookie,
 121                 listMatchInfo, listInstructionInfo, true);
 122     }
 123
 124     public static Flow buildFlow(short tableId, String flowId, int priority, String flowName, int idleTimeOut,
 125             int hardTimeOut, BigInteger cookie, List<MatchInfo> listMatchInfo,
 126             List<InstructionInfo> listInstructionInfo, boolean isStrict) {
 127         FlowKey key = new FlowKey(new FlowId(flowId));
 128         return new FlowBuilder().setMatch(buildMatches(listMatchInfo)).setKey(key)
 129                 .setPriority(Integer.valueOf(priority)).setInstructions(buildInstructions(listInstructionInfo))
 130                 .setBarrier(false).setInstallHw(true).setHardTimeout(hardTimeOut).setIdleTimeout(idleTimeOut)
 131                 .setFlowName(flowName).setTableId(Short.valueOf(tableId)).setStrict(isStrict)
 132                 .setCookie(new FlowCookie(cookie)).build();
 133     }
 134
 135     public static Flow buildFlowNew(short tableId, String flowId, int priority, String flowName, int idleTimeOut,
 136                                  int hardTimeOut, BigInteger cookie, List<MatchInfo> listMatchInfo, List<Instruction> listInstructionInfo) {
 137         return MDSALUtil.buildFlowNew(tableId, flowId, priority, flowName, idleTimeOut, hardTimeOut, cookie,
 138                 listMatchInfo, listInstructionInfo, true);
 139     }
 140
 141     private static Flow buildFlowNew(short tableId, String flowId, int priority, String flowName, int idleTimeOut,
 142                                   int hardTimeOut, BigInteger cookie, List<MatchInfo> listMatchInfo,
 143                                   List<Instruction> listInstructionInfo, boolean isStrict) {
 144         FlowKey key = new FlowKey(new FlowId(flowId));
 145         return new FlowBuilder().setMatch(buildMatches(listMatchInfo)).setKey(key)
 146                 .setPriority(Integer.valueOf(priority)).setInstructions(new InstructionsBuilder().setInstruction(listInstructionInfo).build())
 147                 .setBarrier(false).setInstallHw(true).setHardTimeout(hardTimeOut).setIdleTimeout(idleTimeOut)
 148                 .setFlowName(flowName).setTableId(Short.valueOf(tableId)).setStrict(isStrict)
 149                 .setCookie(new FlowCookie(cookie)).build();
 150     }
 151
 152     public static GroupEntity buildGroupEntity(BigInteger dpnId, long groupId, String groupName, GroupTypes groupType,
 153             List<BucketInfo> listBucketInfo) {
 154
 155         GroupEntity groupEntity = new GroupEntity(dpnId);
 156
 157         groupEntity.setGroupId(groupId);
 158         groupEntity.setGroupName(groupName);
 159         groupEntity.setGroupType(groupType);
 160         groupEntity.setBucketInfoList(listBucketInfo);
 161
 162         return groupEntity;
 163     }
 164
 165     public static TransmitPacketInput getPacketOutDefault(List<ActionInfo> actionInfos, byte[] payload, BigInteger dpnId) {
 166         return new TransmitPacketInputBuilder()
 167                 .setAction(buildActions(actionInfos))
 168                 .setPayload(payload)
 169                 .setNode(
 170                         new NodeRef(InstanceIdentifier.builder(Nodes.class)
 171                                 .child(Node.class, new NodeKey(new NodeId("openflow:" + dpnId))).toInstance()))
 172                 .setIngress(getDefaultNodeConnRef(dpnId)).setEgress(getDefaultNodeConnRef(dpnId)).build();
 173     }
 174
 175     public static TransmitPacketInput getPacketOut(List<ActionInfo> actionInfos, byte[] payload, long dpnId,
 176             NodeConnectorRef ingress) {
 177         return new TransmitPacketInputBuilder()
 178                 .setAction(buildActions(actionInfos))
 179                 .setPayload(payload)
 180                 .setNode(
 181                         new NodeRef(InstanceIdentifier.builder(Nodes.class)
 182                                 .child(Node.class, new NodeKey(new NodeId("openflow:" + dpnId))).toInstance()))
 183                 .setIngress(ingress).setEgress(ingress).build();
 184     }
 185
 186     private static List<Action> buildActions(List<ActionInfo> actions) {
 187         List<Action> actionsList = new ArrayList<Action>();
 188         for (ActionInfo actionInfo : actions) {
 189             actionsList.add(actionInfo.buildAction());
 190         }
 191         return actionsList;
 192     }
 193
 194     public static String longToIp(long ip, long mask) {
 195         StringBuilder sb = new StringBuilder(15);
 196         Joiner joiner = Joiner.on('.');
 197
 198         joiner.appendTo(sb, Bytes.asList(Ints.toByteArray((int) ip)));
 199
 200         sb.append("/" + mask);
 201
 202         return sb.toString();
 203     }
 204
 205     protected static Buckets buildBuckets(List<BucketInfo> listBucketInfo) {
 206         long i = 0;
 207         if (listBucketInfo != null) {
 208             BucketsBuilder bucketsBuilder = new BucketsBuilder();
 209             List<Bucket> bucketList = new ArrayList<Bucket>();
 210
 211             for (BucketInfo bucketInfo : listBucketInfo) {
 212                 BucketBuilder bucketBuilder = new BucketBuilder();
 213                 List<Action> actionsList = new ArrayList<Action>();
 214
 215                 bucketInfo.buildAndAddActions(actionsList);
 216                 bucketBuilder.setAction(actionsList);
 217                 bucketBuilder.setWeight(bucketInfo.getWeight());
 218                 bucketBuilder.setBucketId(new BucketId(i++));
 219                 bucketBuilder.setWeight(bucketInfo.getWeight()).setWatchPort(bucketInfo.getWatchPort())
 220                         .setWatchGroup(bucketInfo.getWatchGroup());
 221                 bucketList.add(bucketBuilder.build());
 222             }
 223
 224             bucketsBuilder.setBucket(bucketList);
 225             return bucketsBuilder.build();
 226         }
 227
 228         return EMPTY_Buckets;
 229     }
 230
 231     protected static Instructions buildInstructions(List<InstructionInfo> listInstructionInfo) {
 232         if (listInstructionInfo != null) {
 233             List<Instruction> instructions = new ArrayList<Instruction>();
 234             int instructionKey = 0;
 235
 236             for (InstructionInfo instructionInfo : listInstructionInfo) {
 237                 instructions.add(instructionInfo.buildInstruction(instructionKey));
 238                 instructionKey++;
 239             }
 240
 241             return new InstructionsBuilder().setInstruction(instructions).build();
 242         }
 243
 244         return EMPTY_Instructions;
 245     }
 246
 247     protected static Match buildMatches(List<MatchInfo> listMatchInfo) {
 248         if (listMatchInfo != null) {
 249             MatchBuilder matchBuilder = new MatchBuilder();
 250             Map<Class<?>, Object> mapMatchBuilder = new HashMap<Class<?>, Object>();
 251
 252             for (MatchInfo matchInfo : listMatchInfo) {
 253                 matchInfo.createInnerMatchBuilder(mapMatchBuilder);
 254             }
 255
 256             for (MatchInfo matchInfo : listMatchInfo) {
 257                 matchInfo.setMatch(matchBuilder, mapMatchBuilder);
 258             }
 259
 260             return matchBuilder.build();
 261         }
 262
 263         return EMPTY_Matches;
 264     }
 265
 266     // TODO: Check the port const
 267     public static NodeConnectorRef getDefaultNodeConnRef(BigInteger nDpId) {
 268         return getNodeConnRef(NODE_PREFIX + SEPARATOR + nDpId, "0xfffffffd");
 269     }
 270
 271     public static NodeConnectorRef getNodeConnRef(BigInteger nDpId, String port) {
 272         return getNodeConnRef(NODE_PREFIX + SEPARATOR + nDpId, port);
 273     }
 274
 275     public static NodeConnectorRef getNodeConnRef(String sNodeId, String port) {
 276         String sNodeConnectorKey;
 277         StringBuilder sbTmp;
 278         NodeId nodeId;
 279         NodeKey nodeKey;
 280         NodeConnectorId nodeConnectorId;
 281         NodeConnectorKey nodeConnectorKey;
 282         InstanceIdentifierBuilder<Nodes> nodesInstanceIdentifierBuilder;
 283         InstanceIdentifierBuilder<Node> nodeInstanceIdentifierBuilder;
 284         InstanceIdentifierBuilder<NodeConnector> nodeConnectorInstanceIdentifierBuilder;
 285         InstanceIdentifier<NodeConnector> nodeConnectorInstanceIdentifier;
 286         NodeConnectorRef nodeConnectorRef;
 287
 288         sbTmp = new StringBuilder();
 289
 290         sbTmp.append(sNodeId);
 291         sbTmp.append(SEPARATOR);
 292         sbTmp.append(port);
 293
 294         sNodeConnectorKey = sbTmp.toString();
 295         nodeConnectorId = new NodeConnectorId(sNodeConnectorKey);
 296         nodeConnectorKey = new NodeConnectorKey(nodeConnectorId);
 297
 298         nodeId = new NodeId(sNodeId);
 299         nodeKey = new NodeKey(nodeId);
 300
 301         nodesInstanceIdentifierBuilder = InstanceIdentifier.<Nodes> builder(Nodes.class);
 302         nodeInstanceIdentifierBuilder = nodesInstanceIdentifierBuilder.<Node, NodeKey> child(Node.class, nodeKey);
 303         nodeConnectorInstanceIdentifierBuilder = nodeInstanceIdentifierBuilder.<NodeConnector, NodeConnectorKey> child(
 304                 NodeConnector.class, nodeConnectorKey);
 305         nodeConnectorInstanceIdentifier = nodeConnectorInstanceIdentifierBuilder.toInstance();
 306         nodeConnectorRef = new NodeConnectorRef(nodeConnectorInstanceIdentifier);
 307         return nodeConnectorRef;
 308     }
 309
 310     public static BigInteger getDpnIdFromNodeName(NodeId nodeId) {
 311         return getDpnIdFromNodeName(nodeId.getValue());
 312     }
 313
 314     public static BigInteger getDpnIdFromNodeName(String sMdsalNodeName) {
 315         String sDpId = sMdsalNodeName.substring(sMdsalNodeName.lastIndexOf(":") + 1);
 316         return new BigInteger(sDpId);
 317     }
 318
 319     public static long getOfPortNumberFromPortName(NodeConnectorId nodeConnectorId) {
 320         return getOfPortNumberFromPortName(nodeConnectorId.getValue());
 321     }
 322
 323     public static long getDpnIdFromPortName(NodeConnectorId nodeConnectorId) {
 324         String ofPortName = nodeConnectorId.getValue();
 325         return Long.parseLong(ofPortName.substring(ofPortName.indexOf(":")+1,
 326                 ofPortName.lastIndexOf(":")));
 327     }
 328
 329     public static long getOfPortNumberFromPortName(String sMdsalPortName) {
 330         String sPortNumber = sMdsalPortName.substring(sMdsalPortName.lastIndexOf(":") + 1);
 331         return Long.parseLong(sPortNumber);
 332     }
 333
 334     public static TransmitPacketInput getPacketOut(List<ActionInfo> actionInfos, byte[] payload, BigInteger dpnId,
 335                     NodeConnectorRef nodeConnRef) {
 336         // TODO Auto-generated method stub
 337         return null;
 338     }
 339
 340     public static Instruction buildAndGetPopVlanActionInstruction(int actionKey, int instructionKey) {
 341         Action popVlanAction = new ActionBuilder().setAction(
 342                 new PopVlanActionCaseBuilder().setPopVlanAction(new PopVlanActionBuilder().build()).build())
 343                 .setKey(new ActionKey(actionKey)).build();
 344         List<Action> listAction = new ArrayList<Action> ();
 345         listAction.add(popVlanAction);
 346         ApplyActions applyActions = new ApplyActionsBuilder().setAction(listAction).build();
 347         ApplyActionsCase applyActionsCase = new ApplyActionsCaseBuilder().setApplyActions(applyActions).build();
 348         InstructionBuilder instructionBuilder = new InstructionBuilder();
 349
 350         instructionBuilder.setInstruction(applyActionsCase);
 351         instructionBuilder.setKey(new InstructionKey(instructionKey));
 352         return instructionBuilder.build();
 353     }
 354
 355     public static Instruction buildAndGetWriteMetadaInstruction(BigInteger metadata,
 356                                                                 BigInteger mask, int instructionKey) {
 357         return new InstructionBuilder()
 358                 .setInstruction(
 359                         new WriteMetadataCaseBuilder().setWriteMetadata(
 360                                 new WriteMetadataBuilder().setMetadata(metadata).setMetadataMask(mask).build())
 361                                 .build()).setKey(new InstructionKey(instructionKey)).build();
 362     }
 363
 364     public static <T extends DataObject> Optional<T> read(LogicalDatastoreType datastoreType,
 365                                                           InstanceIdentifier<T> path, DataBroker broker) {
 366
 367         ReadOnlyTransaction tx = broker.newReadOnlyTransaction();
 368
 369         Optional<T> result = Optional.absent();
 370         try {
 371             result = tx.read(datastoreType, path).get();
 372         } catch (Exception e) {
 373             logger.error("An error occured while reading data from the path {} with the exception {}", path, e);
 374         }
 375         return result;
 376     }
 377
 378     public static <T extends DataObject> Optional<T> read(DataBroker broker,
 379                                                           LogicalDatastoreType datastoreType, InstanceIdentifier<T> path) {
 380
 381         ReadOnlyTransaction tx = broker.newReadOnlyTransaction();
 382
 383         Optional<T> result = Optional.absent();
 384         try {
 385             result = tx.read(datastoreType, path).get();
 386         } catch (Exception e) {
 387             throw new RuntimeException(e);
 388         }
 389         return result;
 390     }
 391
 392     public static <T extends DataObject> void syncWrite(DataBroker broker,
 393                                                         LogicalDatastoreType datastoreType, InstanceIdentifier<T> path,
 394                                                         T data) {
 395         WriteTransaction tx = broker.newWriteOnlyTransaction();
 396         tx.put(datastoreType, path, data, true);
 397         CheckedFuture<Void, TransactionCommitFailedException> futures = tx.submit();
 398         try {
 399             futures.get();
 400         } catch (InterruptedException | ExecutionException e) {
 401             logger.error("Error writing to datastore (path, data) : ({}, {})", path, data);
 402             throw new RuntimeException(e.getMessage());
 403         }
 404     }
 405
 406     public static <T extends DataObject> void syncUpdate(DataBroker broker,
 407                                                          LogicalDatastoreType datastoreType, InstanceIdentifier<T> path,
 408                                                          T data) {
 409         WriteTransaction tx = broker.newWriteOnlyTransaction();
 410         tx.merge(datastoreType, path, data, true);
 411         CheckedFuture<Void, TransactionCommitFailedException> futures = tx.submit();
 412         try {
 413             futures.get();
 414         } catch (InterruptedException | ExecutionException e) {
 415             logger.error("Error writing to datastore (path, data) : ({}, {})", path, data);
 416             throw new RuntimeException(e.getMessage());
 417         }
 418     }
 419
 420     public static <T extends DataObject> void syncDelete(DataBroker broker,
 421                                                          LogicalDatastoreType datastoreType, InstanceIdentifier<T> obj) {
 422         WriteTransaction tx = broker.newWriteOnlyTransaction();
 423         tx.delete(datastoreType, obj);
 424         CheckedFuture<Void, TransactionCommitFailedException> futures = tx.submit();
 425         try {
 426             futures.get();
 427         } catch (InterruptedException | ExecutionException e) {
 428             logger.error("Error deleting from datastore (path) : ({})", obj);
 429             throw new RuntimeException(e.getMessage());
 430         }
 431     }
 432
 433     public static byte[] getMacAddressForNodeConnector(DataBroker broker,
 434             InstanceIdentifier<NodeConnector> nodeConnectorId)  {
 435         Optional<NodeConnector> optNc = MDSALDataStoreUtils.read(broker,
 436                 LogicalDatastoreType.OPERATIONAL, nodeConnectorId);
 437         if(optNc.isPresent()) {
 438             NodeConnector nc = optNc.get();
 439             FlowCapableNodeConnector fcnc = nc.getAugmentation(FlowCapableNodeConnector.class);
 440             MacAddress macAddress = fcnc.getHardwareAddress();
 441             return HexEncode.bytesFromHexString(macAddress.getValue());
 442         }
 443         return null;
 444     }
 445
 446     public static NodeId getNodeIdFromNodeConnectorId(NodeConnectorId ncId) {
 447         return new NodeId(ncId.getValue().substring(0,
 448                 ncId.getValue().lastIndexOf(":")));
 449     }
 450
 451     public static String getInterfaceName(NodeConnectorRef ref, DataBroker dataBroker) {
 452         NodeConnectorId nodeConnectorId = getNodeConnectorId(dataBroker, ref);
 453         NodeId nodeId = getNodeIdFromNodeConnectorId(nodeConnectorId);
 454         InstanceIdentifier<NodeConnector> ncIdentifier = InstanceIdentifier
 455                 .builder(Nodes.class)
 456                 .child(Node.class, new NodeKey(nodeId))
 457                 .child(NodeConnector.class,
 458                         new NodeConnectorKey(nodeConnectorId)).build();
 459
 460         Optional<NodeConnector> nodeConnectorOptional = read(
 461                 dataBroker,
 462                 LogicalDatastoreType.OPERATIONAL, ncIdentifier);
 463         if (!nodeConnectorOptional.isPresent()) {
 464             return null;
 465         }
 466         NodeConnector nc = nodeConnectorOptional.get();
 467         FlowCapableNodeConnector fc = nc
 468                 .getAugmentation(FlowCapableNodeConnector.class);
 469         return fc.getName();
 470     }
 471
 472     public static NodeConnectorId getNodeConnectorId(DataBroker dataBroker,
 473             NodeConnectorRef ref) {
 474         Optional<NodeConnector> nc = (Optional<NodeConnector>) read(
 475                 dataBroker,
 476                 LogicalDatastoreType.CONFIGURATION, ref.getValue());
 477         return nc.get().getId();
 478     }
 479
 480 }