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

   1 /*
   2  * Copyright (c) 2015 - 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.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.GoToTableCaseBuilder;
  42 import org.opendaylight.yang.gen.v1.urn.opendaylight.flow.types.rev131026.instruction.instruction.WriteMetadataCaseBuilder;
  43 import org.opendaylight.yang.gen.v1.urn.opendaylight.flow.types.rev131026.instruction.instruction.apply.actions._case.ApplyActions;
  44 import org.opendaylight.yang.gen.v1.urn.opendaylight.flow.types.rev131026.instruction.instruction.apply.actions._case.ApplyActionsBuilder;
  45 import org.opendaylight.yang.gen.v1.urn.opendaylight.flow.types.rev131026.instruction.instruction.go.to.table._case.GoToTableBuilder;
  46 import org.opendaylight.yang.gen.v1.urn.opendaylight.flow.types.rev131026.instruction.instruction.write.metadata._case.WriteMetadataBuilder;
  47 import org.opendaylight.yang.gen.v1.urn.opendaylight.flow.types.rev131026.instruction.list.Instruction;
  48 import org.opendaylight.yang.gen.v1.urn.opendaylight.flow.types.rev131026.instruction.list.InstructionBuilder;
  49 import org.opendaylight.yang.gen.v1.urn.opendaylight.flow.types.rev131026.instruction.list.InstructionKey;
  50 import org.opendaylight.yang.gen.v1.urn.opendaylight.group.types.rev131018.BucketId;
  51 import org.opendaylight.yang.gen.v1.urn.opendaylight.group.types.rev131018.GroupId;
  52 import org.opendaylight.yang.gen.v1.urn.opendaylight.group.types.rev131018.GroupTypes;
  53 import org.opendaylight.yang.gen.v1.urn.opendaylight.group.types.rev131018.group.Buckets;
  54 import org.opendaylight.yang.gen.v1.urn.opendaylight.group.types.rev131018.group.BucketsBuilder;
  55 import org.opendaylight.yang.gen.v1.urn.opendaylight.group.types.rev131018.group.buckets.Bucket;
  56 import org.opendaylight.yang.gen.v1.urn.opendaylight.group.types.rev131018.group.buckets.BucketBuilder;
  57 import org.opendaylight.yang.gen.v1.urn.opendaylight.group.types.rev131018.groups.Group;
  58 import org.opendaylight.yang.gen.v1.urn.opendaylight.group.types.rev131018.groups.GroupBuilder;
  59 import org.opendaylight.yang.gen.v1.urn.opendaylight.group.types.rev131018.groups.GroupKey;
  60 import org.opendaylight.yang.gen.v1.urn.opendaylight.inventory.rev130819.NodeConnectorId;
  61 import org.opendaylight.yang.gen.v1.urn.opendaylight.inventory.rev130819.NodeConnectorRef;
  62 import org.opendaylight.yang.gen.v1.urn.opendaylight.inventory.rev130819.NodeId;
  63 import org.opendaylight.yang.gen.v1.urn.opendaylight.inventory.rev130819.NodeRef;
  64 import org.opendaylight.yang.gen.v1.urn.opendaylight.inventory.rev130819.Nodes;
  65 import org.opendaylight.yang.gen.v1.urn.opendaylight.inventory.rev130819.node.NodeConnector;
  66 import org.opendaylight.yang.gen.v1.urn.opendaylight.inventory.rev130819.node.NodeConnectorKey;
  67 import org.opendaylight.yang.gen.v1.urn.opendaylight.inventory.rev130819.nodes.Node;
  68 import org.opendaylight.yang.gen.v1.urn.opendaylight.inventory.rev130819.nodes.NodeKey;
  69 import org.opendaylight.yang.gen.v1.urn.opendaylight.packet.service.rev130709.TransmitPacketInput;
  70 import org.opendaylight.yang.gen.v1.urn.opendaylight.packet.service.rev130709.TransmitPacketInputBuilder;
  71 import org.opendaylight.yangtools.yang.binding.DataObject;
  72 import org.opendaylight.yangtools.yang.binding.InstanceIdentifier;
  73 import org.opendaylight.yangtools.yang.binding.InstanceIdentifier.InstanceIdentifierBuilder;
  74 import org.opendaylight.yangtools.yang.binding.DataObject;
  75 import org.opendaylight.controller.md.sal.common.api.data.LogicalDatastoreType;
  76 import org.opendaylight.controller.md.sal.binding.api.WriteTransaction;
  77 import org.opendaylight.controller.md.sal.binding.api.ReadOnlyTransaction;
  78 import org.opendaylight.controller.md.sal.binding.api.DataBroker;
  79 import org.opendaylight.controller.md.sal.common.api.data.TransactionCommitFailedException;
  80 import org.slf4j.Logger;
  81 import org.slf4j.LoggerFactory;
  82 import org.opendaylight.yang.gen.v1.urn.opendaylight.flow.inventory.rev130819.FlowCapableNodeConnector;
  83 import org.opendaylight.controller.liblldp.HexEncode;
  84 import com.google.common.base.Joiner;
  85 import com.google.common.base.Optional;
  86 import com.google.common.primitives.Bytes;
  87 import com.google.common.primitives.Ints;
  88 import com.google.common.util.concurrent.CheckedFuture;
  89
  90 public class MDSALUtil {
  91
  92     public static final String NODE_PREFIX = "openflow";
  93     public static final String SEPARATOR = ":";
  94     private static final Buckets EMPTY_Buckets = new BucketsBuilder().build();
  95     private static final Instructions EMPTY_Instructions = new InstructionsBuilder().setInstruction(
  96             new ArrayList<Instruction>()).build();
  97     private static final Match EMPTY_Matches = new MatchBuilder().build();
  98     private static final Logger logger = LoggerFactory.getLogger(MDSALUtil.class);
  99
 100     public static FlowEntity buildFlowEntity(BigInteger dpnId, short tableId, String flowId, int priority, String flowName,
 101             int idleTimeOut, int hardTimeOut, BigInteger cookie, List<MatchInfo> listMatchInfo,
 102             List<InstructionInfo> listInstructionInfo) {
 103
 104         FlowEntity flowEntity = new FlowEntity(dpnId);
 105
 106         flowEntity.setTableId(tableId);
 107         flowEntity.setFlowId(flowId);
 108         flowEntity.setPriority(priority);
 109         flowEntity.setFlowName(flowName);
 110         flowEntity.setIdleTimeOut(idleTimeOut);
 111         flowEntity.setHardTimeOut(hardTimeOut);
 112         flowEntity.setCookie(cookie);
 113         flowEntity.setMatchInfoList(listMatchInfo);
 114         flowEntity.setInstructionInfoList(listInstructionInfo);
 115
 116         return flowEntity;
 117     }
 118
 119     // TODO: CHECK IF THIS IS USED
 120     public static Flow buildFlow(short tableId, String flowId, int priority, String flowName, int idleTimeOut,
 121             int hardTimeOut, BigInteger cookie, List<MatchInfo> listMatchInfo, List<InstructionInfo> listInstructionInfo) {
 122         return MDSALUtil.buildFlow(tableId, flowId, priority, flowName, idleTimeOut, hardTimeOut, cookie,
 123                 listMatchInfo, listInstructionInfo, true);
 124     }
 125
 126     public static Flow buildFlow(short tableId, String flowId, int priority, String flowName, int idleTimeOut,
 127             int hardTimeOut, BigInteger cookie, List<MatchInfo> listMatchInfo,
 128             List<InstructionInfo> listInstructionInfo, boolean isStrict) {
 129         FlowKey key = new FlowKey(new FlowId(flowId));
 130         return new FlowBuilder().setMatch(buildMatches(listMatchInfo)).setKey(key)
 131                 .setPriority(Integer.valueOf(priority)).setInstructions(buildInstructions(listInstructionInfo))
 132                 .setBarrier(false).setInstallHw(true).setHardTimeout(hardTimeOut).setIdleTimeout(idleTimeOut)
 133                 .setFlowName(flowName).setTableId(Short.valueOf(tableId)).setStrict(isStrict)
 134                 .setCookie(new FlowCookie(cookie)).build();
 135     }
 136
 137     public static Flow buildFlowNew(short tableId, String flowId, int priority, String flowName, int idleTimeOut,
 138                                  int hardTimeOut, BigInteger cookie, List<MatchInfo> listMatchInfo, List<Instruction> listInstructionInfo) {
 139         return MDSALUtil.buildFlowNew(tableId, flowId, priority, flowName, idleTimeOut, hardTimeOut, cookie,
 140                 listMatchInfo, listInstructionInfo, true);
 141     }
 142
 143     private static Flow buildFlowNew(short tableId, String flowId, int priority, String flowName, int idleTimeOut,
 144                                   int hardTimeOut, BigInteger cookie, List<MatchInfo> listMatchInfo,
 145                                   List<Instruction> listInstructionInfo, boolean isStrict) {
 146         FlowKey key = new FlowKey(new FlowId(flowId));
 147         return new FlowBuilder().setMatch(buildMatches(listMatchInfo)).setKey(key)
 148                 .setPriority(Integer.valueOf(priority)).setInstructions(new InstructionsBuilder().setInstruction(listInstructionInfo).build())
 149                 .setBarrier(false).setInstallHw(true).setHardTimeout(hardTimeOut).setIdleTimeout(idleTimeOut)
 150                 .setFlowName(flowName).setTableId(Short.valueOf(tableId)).setStrict(isStrict)
 151                 .setCookie(new FlowCookie(cookie)).build();
 152     }
 153
 154     public static GroupEntity buildGroupEntity(BigInteger dpnId, long groupId, String groupName, GroupTypes groupType,
 155             List<BucketInfo> listBucketInfo) {
 156
 157         GroupEntity groupEntity = new GroupEntity(dpnId);
 158
 159         groupEntity.setGroupId(groupId);
 160         groupEntity.setGroupName(groupName);
 161         groupEntity.setGroupType(groupType);
 162         groupEntity.setBucketInfoList(listBucketInfo);
 163
 164         return groupEntity;
 165     }
 166
 167     public static TransmitPacketInput getPacketOutDefault(List<ActionInfo> actionInfos, byte[] payload, BigInteger dpnId) {
 168         return new TransmitPacketInputBuilder()
 169                 .setAction(buildActions(actionInfos))
 170                 .setPayload(payload)
 171                 .setNode(
 172                         new NodeRef(InstanceIdentifier.builder(Nodes.class)
 173                                 .child(Node.class, new NodeKey(new NodeId("openflow:" + dpnId))).toInstance()))
 174                 .setIngress(getDefaultNodeConnRef(dpnId)).setEgress(getDefaultNodeConnRef(dpnId)).build();
 175     }
 176
 177     public static TransmitPacketInput getPacketOut(List<ActionInfo> actionInfos, byte[] payload, long dpnId,
 178             NodeConnectorRef ingress) {
 179         return new TransmitPacketInputBuilder()
 180                 .setAction(buildActions(actionInfos))
 181                 .setPayload(payload)
 182                 .setNode(
 183                         new NodeRef(InstanceIdentifier.builder(Nodes.class)
 184                                 .child(Node.class, new NodeKey(new NodeId("openflow:" + dpnId))).toInstance()))
 185                 .setIngress(ingress).setEgress(ingress).build();
 186     }
 187
 188     private static List<Action> buildActions(List<ActionInfo> actions) {
 189         List<Action> actionsList = new ArrayList<Action>();
 190         for (ActionInfo actionInfo : actions) {
 191             actionsList.add(actionInfo.buildAction());
 192         }
 193         return actionsList;
 194     }
 195
 196     public static String longToIp(long ip, long mask) {
 197         StringBuilder sb = new StringBuilder(15);
 198         Joiner joiner = Joiner.on('.');
 199
 200         joiner.appendTo(sb, Bytes.asList(Ints.toByteArray((int) ip)));
 201
 202         sb.append("/" + mask);
 203
 204         return sb.toString();
 205     }
 206
 207     protected static Buckets buildBuckets(List<BucketInfo> listBucketInfo) {
 208         long i = 0;
 209         if (listBucketInfo != null) {
 210             BucketsBuilder bucketsBuilder = new BucketsBuilder();
 211             List<Bucket> bucketList = new ArrayList<Bucket>();
 212
 213             for (BucketInfo bucketInfo : listBucketInfo) {
 214                 BucketBuilder bucketBuilder = new BucketBuilder();
 215                 List<Action> actionsList = new ArrayList<Action>();
 216
 217                 bucketInfo.buildAndAddActions(actionsList);
 218                 bucketBuilder.setAction(actionsList);
 219                 bucketBuilder.setWeight(bucketInfo.getWeight());
 220                 bucketBuilder.setBucketId(new BucketId(i++));
 221                 bucketBuilder.setWeight(bucketInfo.getWeight()).setWatchPort(bucketInfo.getWatchPort())
 222                         .setWatchGroup(bucketInfo.getWatchGroup());
 223                 bucketList.add(bucketBuilder.build());
 224             }
 225
 226             bucketsBuilder.setBucket(bucketList);
 227             return bucketsBuilder.build();
 228         }
 229
 230         return EMPTY_Buckets;
 231     }
 232
 233     protected static Instructions buildInstructions(List<InstructionInfo> listInstructionInfo) {
 234         if (listInstructionInfo != null) {
 235             List<Instruction> instructions = new ArrayList<Instruction>();
 236             int instructionKey = 0;
 237
 238             for (InstructionInfo instructionInfo : listInstructionInfo) {
 239                 instructions.add(instructionInfo.buildInstruction(instructionKey));
 240                 instructionKey++;
 241             }
 242
 243             return new InstructionsBuilder().setInstruction(instructions).build();
 244         }
 245
 246         return EMPTY_Instructions;
 247     }
 248
 249     protected static Match buildMatches(List<MatchInfo> listMatchInfo) {
 250         if (listMatchInfo != null) {
 251             MatchBuilder matchBuilder = new MatchBuilder();
 252             Map<Class<?>, Object> mapMatchBuilder = new HashMap<Class<?>, Object>();
 253
 254             for (MatchInfo matchInfo : listMatchInfo) {
 255                 matchInfo.createInnerMatchBuilder(mapMatchBuilder);
 256             }
 257
 258             for (MatchInfo matchInfo : listMatchInfo) {
 259                 matchInfo.setMatch(matchBuilder, mapMatchBuilder);
 260             }
 261
 262             return matchBuilder.build();
 263         }
 264
 265         return EMPTY_Matches;
 266     }
 267
 268     // TODO: Check the port const
 269     public static NodeConnectorRef getDefaultNodeConnRef(BigInteger nDpId) {
 270         return getNodeConnRef(NODE_PREFIX + SEPARATOR + nDpId, "0xfffffffd");
 271     }
 272
 273     public static NodeConnectorRef getNodeConnRef(BigInteger nDpId, String port) {
 274         return getNodeConnRef(NODE_PREFIX + SEPARATOR + nDpId, port);
 275     }
 276
 277     public static NodeConnectorRef getNodeConnRef(String sNodeId, String port) {
 278         String sNodeConnectorKey;
 279         StringBuilder sbTmp;
 280         NodeId nodeId;
 281         NodeKey nodeKey;
 282         NodeConnectorId nodeConnectorId;
 283         NodeConnectorKey nodeConnectorKey;
 284         InstanceIdentifierBuilder<Nodes> nodesInstanceIdentifierBuilder;
 285         InstanceIdentifierBuilder<Node> nodeInstanceIdentifierBuilder;
 286         InstanceIdentifierBuilder<NodeConnector> nodeConnectorInstanceIdentifierBuilder;
 287         InstanceIdentifier<NodeConnector> nodeConnectorInstanceIdentifier;
 288         NodeConnectorRef nodeConnectorRef;
 289
 290         sbTmp = new StringBuilder();
 291
 292         sbTmp.append(sNodeId);
 293         sbTmp.append(SEPARATOR);
 294         sbTmp.append(port);
 295
 296         sNodeConnectorKey = sbTmp.toString();
 297         nodeConnectorId = new NodeConnectorId(sNodeConnectorKey);
 298         nodeConnectorKey = new NodeConnectorKey(nodeConnectorId);
 299
 300         nodeId = new NodeId(sNodeId);
 301         nodeKey = new NodeKey(nodeId);
 302
 303         nodesInstanceIdentifierBuilder = InstanceIdentifier.<Nodes> builder(Nodes.class);
 304         nodeInstanceIdentifierBuilder = nodesInstanceIdentifierBuilder.<Node, NodeKey> child(Node.class, nodeKey);
 305         nodeConnectorInstanceIdentifierBuilder = nodeInstanceIdentifierBuilder.<NodeConnector, NodeConnectorKey> child(
 306                 NodeConnector.class, nodeConnectorKey);
 307         nodeConnectorInstanceIdentifier = nodeConnectorInstanceIdentifierBuilder.toInstance();
 308         nodeConnectorRef = new NodeConnectorRef(nodeConnectorInstanceIdentifier);
 309         return nodeConnectorRef;
 310     }
 311
 312     public static BigInteger getDpnIdFromNodeName(NodeId nodeId) {
 313         return getDpnIdFromNodeName(nodeId.getValue());
 314     }
 315
 316     public static BigInteger getDpnIdFromNodeName(String sMdsalNodeName) {
 317         String sDpId = sMdsalNodeName.substring(sMdsalNodeName.lastIndexOf(":") + 1);
 318         return new BigInteger(sDpId);
 319     }
 320
 321     public static long getOfPortNumberFromPortName(NodeConnectorId nodeConnectorId) {
 322         return getOfPortNumberFromPortName(nodeConnectorId.getValue());
 323     }
 324
 325     public static long getDpnIdFromPortName(NodeConnectorId nodeConnectorId) {
 326         String ofPortName = nodeConnectorId.getValue();
 327         return Long.parseLong(ofPortName.substring(ofPortName.indexOf(":")+1,
 328                 ofPortName.lastIndexOf(":")));
 329     }
 330
 331     public static long getOfPortNumberFromPortName(String sMdsalPortName) {
 332         String sPortNumber = sMdsalPortName.substring(sMdsalPortName.lastIndexOf(":") + 1);
 333         return Long.parseLong(sPortNumber);
 334     }
 335
 336     public static TransmitPacketInput getPacketOut(List<ActionInfo> actionInfos, byte[] payload, BigInteger dpnId,
 337                     NodeConnectorRef nodeConnRef) {
 338         // TODO Auto-generated method stub
 339         return null;
 340     }
 341
 342     public static Instruction buildAndGetPopVlanActionInstruction(int actionKey, int instructionKey) {
 343         Action popVlanAction = new ActionBuilder().setAction(
 344                 new PopVlanActionCaseBuilder().setPopVlanAction(new PopVlanActionBuilder().build()).build())
 345                 .setKey(new ActionKey(actionKey)).build();
 346         List<Action> listAction = new ArrayList<Action> ();
 347         listAction.add(popVlanAction);
 348         ApplyActions applyActions = new ApplyActionsBuilder().setAction(listAction).build();
 349         ApplyActionsCase applyActionsCase = new ApplyActionsCaseBuilder().setApplyActions(applyActions).build();
 350         InstructionBuilder instructionBuilder = new InstructionBuilder();
 351
 352         instructionBuilder.setInstruction(applyActionsCase);
 353         instructionBuilder.setKey(new InstructionKey(instructionKey));
 354         return instructionBuilder.build();
 355     }
 356
 357     public static Instruction buildAndGetWriteMetadaInstruction(BigInteger metadata,
 358                                                                 BigInteger mask, int instructionKey) {
 359         return new InstructionBuilder()
 360                 .setInstruction(
 361                         new WriteMetadataCaseBuilder().setWriteMetadata(
 362                                 new WriteMetadataBuilder().setMetadata(metadata).setMetadataMask(mask).build())
 363                                 .build()).setKey(new InstructionKey(instructionKey)).build();
 364     }
 365
 366     public static Instruction buildAndGetGotoTableInstruction(short tableId, int instructionKey) {
 367         return new InstructionBuilder()
 368             .setInstruction(
 369                 new GoToTableCaseBuilder().setGoToTable(
 370                     new GoToTableBuilder().setTableId(tableId).build()).build())
 371             .setKey(new InstructionKey(instructionKey)).build();
 372     }
 373
 374     public static <T extends DataObject> Optional<T> read(LogicalDatastoreType datastoreType,
 375                                                           InstanceIdentifier<T> path, DataBroker broker) {
 376
 377         ReadOnlyTransaction tx = broker.newReadOnlyTransaction();
 378
 379         Optional<T> result = Optional.absent();
 380         try {
 381             result = tx.read(datastoreType, path).get();
 382         } catch (Exception e) {
 383             logger.error("An error occured while reading data from the path {} with the exception {}", path, e);
 384         }
 385         return result;
 386     }
 387
 388     public static <T extends DataObject> Optional<T> read(DataBroker broker,
 389                                                           LogicalDatastoreType datastoreType, InstanceIdentifier<T> path) {
 390
 391         ReadOnlyTransaction tx = broker.newReadOnlyTransaction();
 392
 393         Optional<T> result = Optional.absent();
 394         try {
 395             result = tx.read(datastoreType, path).get();
 396         } catch (Exception e) {
 397             throw new RuntimeException(e);
 398         }
 399         return result;
 400     }
 401
 402     public static <T extends DataObject> void syncWrite(DataBroker broker,
 403                                                         LogicalDatastoreType datastoreType, InstanceIdentifier<T> path,
 404                                                         T data) {
 405         WriteTransaction tx = broker.newWriteOnlyTransaction();
 406         tx.put(datastoreType, path, data, true);
 407         CheckedFuture<Void, TransactionCommitFailedException> futures = tx.submit();
 408         try {
 409             futures.get();
 410         } catch (InterruptedException | ExecutionException e) {
 411             logger.error("Error writing to datastore (path, data) : ({}, {})", path, data);
 412             throw new RuntimeException(e.getMessage());
 413         }
 414     }
 415
 416     public static <T extends DataObject> void syncUpdate(DataBroker broker,
 417                                                          LogicalDatastoreType datastoreType, InstanceIdentifier<T> path,
 418                                                          T data) {
 419         WriteTransaction tx = broker.newWriteOnlyTransaction();
 420         tx.merge(datastoreType, path, data, true);
 421         CheckedFuture<Void, TransactionCommitFailedException> futures = tx.submit();
 422         try {
 423             futures.get();
 424         } catch (InterruptedException | ExecutionException e) {
 425             logger.error("Error writing to datastore (path, data) : ({}, {})", path, data);
 426             throw new RuntimeException(e.getMessage());
 427         }
 428     }
 429
 430     public static <T extends DataObject> void syncDelete(DataBroker broker,
 431                                                          LogicalDatastoreType datastoreType, InstanceIdentifier<T> obj) {
 432         WriteTransaction tx = broker.newWriteOnlyTransaction();
 433         tx.delete(datastoreType, obj);
 434         CheckedFuture<Void, TransactionCommitFailedException> futures = tx.submit();
 435         try {
 436             futures.get();
 437         } catch (InterruptedException | ExecutionException e) {
 438             logger.error("Error deleting from datastore (path) : ({})", obj);
 439             throw new RuntimeException(e.getMessage());
 440         }
 441     }
 442
 443     public static byte[] getMacAddressForNodeConnector(DataBroker broker,
 444             InstanceIdentifier<NodeConnector> nodeConnectorId)  {
 445         Optional<NodeConnector> optNc = MDSALDataStoreUtils.read(broker,
 446                 LogicalDatastoreType.OPERATIONAL, nodeConnectorId);
 447         if(optNc.isPresent()) {
 448             NodeConnector nc = optNc.get();
 449             FlowCapableNodeConnector fcnc = nc.getAugmentation(FlowCapableNodeConnector.class);
 450             MacAddress macAddress = fcnc.getHardwareAddress();
 451             return HexEncode.bytesFromHexString(macAddress.getValue());
 452         }
 453         return null;
 454     }
 455
 456     public static NodeId getNodeIdFromNodeConnectorId(NodeConnectorId ncId) {
 457         return new NodeId(ncId.getValue().substring(0,
 458                 ncId.getValue().lastIndexOf(":")));
 459     }
 460
 461     public static String getInterfaceName(NodeConnectorRef ref, DataBroker dataBroker) {
 462         NodeConnectorId nodeConnectorId = getNodeConnectorId(dataBroker, ref);
 463         NodeId nodeId = getNodeIdFromNodeConnectorId(nodeConnectorId);
 464         InstanceIdentifier<NodeConnector> ncIdentifier = InstanceIdentifier
 465                 .builder(Nodes.class)
 466                 .child(Node.class, new NodeKey(nodeId))
 467                 .child(NodeConnector.class,
 468                         new NodeConnectorKey(nodeConnectorId)).build();
 469
 470         Optional<NodeConnector> nodeConnectorOptional = read(
 471                 dataBroker,
 472                 LogicalDatastoreType.OPERATIONAL, ncIdentifier);
 473         if (!nodeConnectorOptional.isPresent()) {
 474             return null;
 475         }
 476         NodeConnector nc = nodeConnectorOptional.get();
 477         FlowCapableNodeConnector fc = nc
 478                 .getAugmentation(FlowCapableNodeConnector.class);
 479         return fc.getName();
 480     }
 481
 482     public static NodeConnectorId getNodeConnectorId(DataBroker dataBroker,
 483             NodeConnectorRef ref) {
 484         Optional<NodeConnector> nc = (Optional<NodeConnector>) read(
 485                 dataBroker,
 486                 LogicalDatastoreType.OPERATIONAL, ref.getValue());
 487         if(nc.isPresent()){
 488             return nc.get().getId();
 489         }
 490         return null;
 491     }
 492
 493 }