openflowplugin-impl/src/main/java/org/opendaylight/openflowplugin/impl/statistics/StatisticsGatheringUtils.java

   1 /*
   2  * Copyright (c) 2015 Cisco Systems, Inc. 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.openflowplugin.impl.statistics;
  10
  11 import com.google.common.base.Function;
  12 import com.google.common.base.Optional;
  13 import com.google.common.collect.Iterables;
  14 import com.google.common.util.concurrent.CheckedFuture;
  15 import com.google.common.util.concurrent.Futures;
  16 import com.google.common.util.concurrent.JdkFutureAdapters;
  17 import com.google.common.util.concurrent.ListenableFuture;
  18 import java.util.Collections;
  19 import java.util.List;
  20 import java.util.concurrent.ExecutionException;
  21 import javax.annotation.Nullable;
  22 import org.opendaylight.controller.md.sal.binding.api.ReadTransaction;
  23 import org.opendaylight.controller.md.sal.common.api.data.LogicalDatastoreType;
  24 import org.opendaylight.controller.md.sal.common.api.data.ReadFailedException;
  25 import org.opendaylight.openflowplugin.api.openflow.device.DeviceContext;
  26 import org.opendaylight.openflowplugin.api.openflow.registry.flow.FlowRegistryKey;
  27 import org.opendaylight.openflowplugin.api.openflow.statistics.ofpspecific.EventIdentifier;
  28 import org.opendaylight.openflowplugin.api.openflow.statistics.ofpspecific.StatisticsGatherer;
  29 import org.opendaylight.openflowplugin.impl.registry.flow.FlowRegistryKeyFactory;
  30 import org.opendaylight.openflowplugin.impl.statistics.ofpspecific.EventsTimeCounter;
  31 import org.opendaylight.yang.gen.v1.urn.opendaylight.flow.inventory.rev130819.FlowCapableNode;
  32 import org.opendaylight.yang.gen.v1.urn.opendaylight.flow.inventory.rev130819.FlowCapableNodeConnector;
  33 import org.opendaylight.yang.gen.v1.urn.opendaylight.flow.inventory.rev130819.FlowId;
  34 import org.opendaylight.yang.gen.v1.urn.opendaylight.flow.inventory.rev130819.meters.Meter;
  35 import org.opendaylight.yang.gen.v1.urn.opendaylight.flow.inventory.rev130819.meters.MeterBuilder;
  36 import org.opendaylight.yang.gen.v1.urn.opendaylight.flow.inventory.rev130819.meters.MeterKey;
  37 import org.opendaylight.yang.gen.v1.urn.opendaylight.flow.inventory.rev130819.tables.Table;
  38 import org.opendaylight.yang.gen.v1.urn.opendaylight.flow.inventory.rev130819.tables.TableBuilder;
  39 import org.opendaylight.yang.gen.v1.urn.opendaylight.flow.inventory.rev130819.tables.TableKey;
  40 import org.opendaylight.yang.gen.v1.urn.opendaylight.flow.inventory.rev130819.tables.table.Flow;
  41 import org.opendaylight.yang.gen.v1.urn.opendaylight.flow.inventory.rev130819.tables.table.FlowBuilder;
  42 import org.opendaylight.yang.gen.v1.urn.opendaylight.flow.inventory.rev130819.tables.table.FlowKey;
  43 import org.opendaylight.yang.gen.v1.urn.opendaylight.flow.statistics.rev130819.FlowStatisticsData;
  44 import org.opendaylight.yang.gen.v1.urn.opendaylight.flow.statistics.rev130819.FlowStatisticsDataBuilder;
  45 import org.opendaylight.yang.gen.v1.urn.opendaylight.flow.statistics.rev130819.FlowsStatisticsUpdate;
  46 import org.opendaylight.yang.gen.v1.urn.opendaylight.flow.statistics.rev130819.flow.and.statistics.map.list.FlowAndStatisticsMapList;
  47 import org.opendaylight.yang.gen.v1.urn.opendaylight.flow.statistics.rev130819.flow.statistics.FlowStatisticsBuilder;
  48 import org.opendaylight.yang.gen.v1.urn.opendaylight.flow.table.statistics.rev131215.FlowTableStatisticsData;
  49 import org.opendaylight.yang.gen.v1.urn.opendaylight.flow.table.statistics.rev131215.FlowTableStatisticsUpdate;
  50 import org.opendaylight.yang.gen.v1.urn.opendaylight.flow.table.statistics.rev131215.flow.table.and.statistics.map.FlowTableAndStatisticsMap;
  51 import org.opendaylight.yang.gen.v1.urn.opendaylight.flow.table.statistics.rev131215.flow.table.statistics.FlowTableStatistics;
  52 import org.opendaylight.yang.gen.v1.urn.opendaylight.flow.table.statistics.rev131215.flow.table.statistics.FlowTableStatisticsBuilder;
  53 import org.opendaylight.yang.gen.v1.urn.opendaylight.flow.types.port.rev130925.queues.Queue;
  54 import org.opendaylight.yang.gen.v1.urn.opendaylight.flow.types.port.rev130925.queues.QueueBuilder;
  55 import org.opendaylight.yang.gen.v1.urn.opendaylight.flow.types.port.rev130925.queues.QueueKey;
  56 import org.opendaylight.yang.gen.v1.urn.opendaylight.group.statistics.rev131111.GroupDescStatsUpdated;
  57 import org.opendaylight.yang.gen.v1.urn.opendaylight.group.statistics.rev131111.GroupStatisticsUpdated;
  58 import org.opendaylight.yang.gen.v1.urn.opendaylight.group.statistics.rev131111.NodeGroupStatistics;
  59 import org.opendaylight.yang.gen.v1.urn.opendaylight.group.statistics.rev131111.NodeGroupStatisticsBuilder;
  60 import org.opendaylight.yang.gen.v1.urn.opendaylight.group.statistics.rev131111.group.statistics.GroupStatistics;
  61 import org.opendaylight.yang.gen.v1.urn.opendaylight.group.statistics.rev131111.group.statistics.GroupStatisticsBuilder;
  62 import org.opendaylight.yang.gen.v1.urn.opendaylight.group.types.rev131018.GroupId;
  63 import org.opendaylight.yang.gen.v1.urn.opendaylight.group.types.rev131018.group.desc.stats.reply.GroupDescStats;
  64 import org.opendaylight.yang.gen.v1.urn.opendaylight.group.types.rev131018.group.statistics.reply.GroupStats;
  65 import org.opendaylight.yang.gen.v1.urn.opendaylight.group.types.rev131018.groups.Group;
  66 import org.opendaylight.yang.gen.v1.urn.opendaylight.group.types.rev131018.groups.GroupBuilder;
  67 import org.opendaylight.yang.gen.v1.urn.opendaylight.group.types.rev131018.groups.GroupKey;
  68 import org.opendaylight.yang.gen.v1.urn.opendaylight.inventory.rev130819.node.NodeConnector;
  69 import org.opendaylight.yang.gen.v1.urn.opendaylight.inventory.rev130819.node.NodeConnectorKey;
  70 import org.opendaylight.yang.gen.v1.urn.opendaylight.inventory.rev130819.nodes.Node;
  71 import org.opendaylight.yang.gen.v1.urn.opendaylight.meter.statistics.rev131111.MeterConfigStatsUpdated;
  72 import org.opendaylight.yang.gen.v1.urn.opendaylight.meter.statistics.rev131111.MeterStatisticsUpdated;
  73 import org.opendaylight.yang.gen.v1.urn.opendaylight.meter.statistics.rev131111.NodeMeterStatistics;
  74 import org.opendaylight.yang.gen.v1.urn.opendaylight.meter.statistics.rev131111.NodeMeterStatisticsBuilder;
  75 import org.opendaylight.yang.gen.v1.urn.opendaylight.meter.statistics.rev131111.nodes.node.meter.MeterStatistics;
  76 import org.opendaylight.yang.gen.v1.urn.opendaylight.meter.statistics.rev131111.nodes.node.meter.MeterStatisticsBuilder;
  77 import org.opendaylight.yang.gen.v1.urn.opendaylight.meter.types.rev130918.MeterId;
  78 import org.opendaylight.yang.gen.v1.urn.opendaylight.meter.types.rev130918.meter.config.stats.reply.MeterConfigStats;
  79 import org.opendaylight.yang.gen.v1.urn.opendaylight.meter.types.rev130918.meter.statistics.reply.MeterStats;
  80 import org.opendaylight.yang.gen.v1.urn.opendaylight.openflow.common.types.rev130731.MultipartType;
  81 import org.opendaylight.yang.gen.v1.urn.opendaylight.openflow.protocol.rev130731.MultipartReply;
  82 import org.opendaylight.yang.gen.v1.urn.opendaylight.port.statistics.rev131214.FlowCapableNodeConnectorStatisticsData;
  83 import org.opendaylight.yang.gen.v1.urn.opendaylight.port.statistics.rev131214.NodeConnectorStatisticsUpdate;
  84 import org.opendaylight.yang.gen.v1.urn.opendaylight.port.statistics.rev131214.flow.capable.node.connector.statistics.FlowCapableNodeConnectorStatistics;
  85 import org.opendaylight.yang.gen.v1.urn.opendaylight.port.statistics.rev131214.flow.capable.node.connector.statistics.FlowCapableNodeConnectorStatisticsBuilder;
  86 import org.opendaylight.yang.gen.v1.urn.opendaylight.port.statistics.rev131214.node.connector.statistics.and.port.number.map.NodeConnectorStatisticsAndPortNumberMap;
  87 import org.opendaylight.yang.gen.v1.urn.opendaylight.queue.statistics.rev131216.FlowCapableNodeConnectorQueueStatisticsData;
  88 import org.opendaylight.yang.gen.v1.urn.opendaylight.queue.statistics.rev131216.FlowCapableNodeConnectorQueueStatisticsDataBuilder;
  89 import org.opendaylight.yang.gen.v1.urn.opendaylight.queue.statistics.rev131216.QueueStatisticsUpdate;
  90 import org.opendaylight.yang.gen.v1.urn.opendaylight.queue.statistics.rev131216.flow.capable.node.connector.queue.statistics.FlowCapableNodeConnectorQueueStatistics;
  91 import org.opendaylight.yang.gen.v1.urn.opendaylight.queue.statistics.rev131216.flow.capable.node.connector.queue.statistics.FlowCapableNodeConnectorQueueStatisticsBuilder;
  92 import org.opendaylight.yang.gen.v1.urn.opendaylight.queue.statistics.rev131216.queue.id.and.statistics.map.QueueIdAndStatisticsMap;
  93 import org.opendaylight.yangtools.yang.binding.DataObject;
  94 import org.opendaylight.yangtools.yang.binding.InstanceIdentifier;
  95 import org.opendaylight.yangtools.yang.binding.KeyedInstanceIdentifier;
  96 import org.opendaylight.yangtools.yang.common.RpcResult;
  97 import org.slf4j.Logger;
  98 import org.slf4j.LoggerFactory;
  99
 100 /**
 101  * Created by Martin Bobak &lt;mbobak@cisco.com&gt; on 2.4.2015.
 102  */
 103 public final class StatisticsGatheringUtils {
 104
 105     private static final Logger LOG = LoggerFactory.getLogger(StatisticsGatheringUtils.class);
 106     private static final SinglePurposeMultipartReplyTranslator MULTIPART_REPLY_TRANSLATOR = new SinglePurposeMultipartReplyTranslator();
 107     public static final String QUEUE2_REQCTX = "QUEUE2REQCTX-";
 108
 109     private StatisticsGatheringUtils() {
 110         throw new IllegalStateException("This class should not be instantiated.");
 111     }
 112
 113
 114     public static ListenableFuture<Boolean> gatherStatistics(final StatisticsGatherer statisticsGatheringService,
 115                                                              final DeviceContext deviceContext,
 116                                                              final MultipartType type) {
 117         final String deviceId = deviceContext.getPrimaryConnectionContext().getNodeId().toString();
 118         EventIdentifier wholeProcessEventIdentifier = null;
 119         if (MultipartType.OFPMPFLOW.equals(type)) {
 120             wholeProcessEventIdentifier = new EventIdentifier(type.toString(), deviceId);
 121             EventsTimeCounter.markStart(wholeProcessEventIdentifier);
 122         }
 123         EventIdentifier ofpQueuToRequestContextEventIdentifier = new EventIdentifier(QUEUE2_REQCTX + type.toString(), deviceId);
 124         final ListenableFuture<RpcResult<List<MultipartReply>>> statisticsDataInFuture =
 125                 JdkFutureAdapters.listenInPoolThread(statisticsGatheringService.getStatisticsOfType(
 126                         ofpQueuToRequestContextEventIdentifier, type));
 127         return transformAndStoreStatisticsData(statisticsDataInFuture, deviceContext, wholeProcessEventIdentifier);
 128     }
 129
 130     private static ListenableFuture<Boolean> transformAndStoreStatisticsData(final ListenableFuture<RpcResult<List<MultipartReply>>> statisticsDataInFuture,
 131                                                                              final DeviceContext deviceContext,
 132                                                                              final EventIdentifier eventIdentifier) {
 133         return Futures.transform(statisticsDataInFuture, new Function<RpcResult<List<MultipartReply>>, Boolean>() {
 134             @Nullable
 135             @Override
 136             public Boolean apply(final RpcResult<List<MultipartReply>> rpcResult) {
 137                 if (rpcResult.isSuccessful()) {
 138                     boolean isMultipartProcessed = Boolean.TRUE;
 139
 140                     // TODO: in case the result value is null then multipart data probably got processed on the fly -
 141                     // TODO: this contract should by clearly stated and enforced - now simple true value is returned
 142                     if (null != rpcResult.getResult()) {
 143                         Iterable<? extends DataObject> allMultipartData = Collections.emptyList();
 144                         DataObject multipartData = null;
 145                         for (final MultipartReply singleReply : rpcResult.getResult()) {
 146                             final List<? extends DataObject> multipartDataList = MULTIPART_REPLY_TRANSLATOR.translate(deviceContext, singleReply);
 147                             multipartData = multipartDataList.get(0);
 148                             allMultipartData = Iterables.concat(allMultipartData, multipartDataList);
 149                         }
 150
 151                         if (multipartData instanceof GroupStatisticsUpdated) {
 152                             processGroupStatistics((Iterable<GroupStatisticsUpdated>) allMultipartData, deviceContext);
 153                         } else if (multipartData instanceof MeterStatisticsUpdated) {
 154                             processMetersStatistics((Iterable<MeterStatisticsUpdated>) allMultipartData, deviceContext);
 155                         } else if (multipartData instanceof NodeConnectorStatisticsUpdate) {
 156                             processNodeConnectorStatistics((Iterable<NodeConnectorStatisticsUpdate>) allMultipartData, deviceContext);
 157                         } else if (multipartData instanceof FlowTableStatisticsUpdate) {
 158                             processFlowTableStatistics((Iterable<FlowTableStatisticsUpdate>) allMultipartData, deviceContext);
 159                         } else if (multipartData instanceof QueueStatisticsUpdate) {
 160                             processQueueStatistics((Iterable<QueueStatisticsUpdate>) allMultipartData, deviceContext);
 161                         } else if (multipartData instanceof FlowsStatisticsUpdate) {
 162                             processFlowStatistics((Iterable<FlowsStatisticsUpdate>) allMultipartData, deviceContext);
 163                             EventsTimeCounter.markEnd(eventIdentifier);
 164                         } else if (multipartData instanceof GroupDescStatsUpdated) {
 165                             processGroupDescStats((Iterable<GroupDescStatsUpdated>) allMultipartData, deviceContext);
 166                         } else if (multipartData instanceof MeterConfigStatsUpdated) {
 167                             processMeterConfigStatsUpdated((Iterable<MeterConfigStatsUpdated>) allMultipartData, deviceContext);
 168                         } else {
 169                             isMultipartProcessed = Boolean.FALSE;
 170                         }
 171                         //TODO : implement experimenter
 172                     }
 173
 174                     return isMultipartProcessed;
 175                 }
 176                 return Boolean.FALSE;
 177             }
 178         });
 179     }
 180
 181     private static void processMeterConfigStatsUpdated(final Iterable<MeterConfigStatsUpdated> data, final DeviceContext deviceContext) {
 182         final InstanceIdentifier<FlowCapableNode> fNodeIdent = assembleFlowCapableNodeInstanceIdentifier(deviceContext);
 183         deleteAllKnownMeters(deviceContext, fNodeIdent);
 184         for (final MeterConfigStatsUpdated meterConfigStatsUpdated : data) {
 185             for (final MeterConfigStats meterConfigStats : meterConfigStatsUpdated.getMeterConfigStats()) {
 186                 final MeterId meterId = meterConfigStats.getMeterId();
 187                 final InstanceIdentifier<Meter> meterInstanceIdentifier = fNodeIdent.child(Meter.class, new MeterKey(meterId));
 188
 189                 final MeterBuilder meterBuilder = new MeterBuilder(meterConfigStats);
 190                 meterBuilder.setKey(new MeterKey(meterId));
 191                 meterBuilder.addAugmentation(NodeMeterStatistics.class, new NodeMeterStatisticsBuilder().build());
 192                 deviceContext.getDeviceMeterRegistry().store(meterId);
 193                 deviceContext.writeToTransaction(LogicalDatastoreType.OPERATIONAL, meterInstanceIdentifier, meterBuilder.build());
 194             }
 195         }
 196         deviceContext.submitTransaction();
 197     }
 198
 199     private static void processFlowStatistics(final Iterable<FlowsStatisticsUpdate> data, final DeviceContext deviceContext) {
 200         deleteAllKnownFlows(deviceContext);
 201         writeFlowStatistics(data, deviceContext);
 202         deviceContext.submitTransaction();
 203     }
 204
 205     public static void writeFlowStatistics(Iterable<FlowsStatisticsUpdate> data, DeviceContext deviceContext) {
 206         final InstanceIdentifier<FlowCapableNode> fNodeIdent = assembleFlowCapableNodeInstanceIdentifier(deviceContext);
 207         for (final FlowsStatisticsUpdate flowsStatistics : data) {
 208             for (final FlowAndStatisticsMapList flowStat : flowsStatistics.getFlowAndStatisticsMapList()) {
 209                 final FlowBuilder flowBuilder = new FlowBuilder(flowStat);
 210                 flowBuilder.addAugmentation(FlowStatisticsData.class, refineFlowStatisticsAugmentation(flowStat).build());
 211
 212                 final short tableId = flowStat.getTableId();
 213                 final FlowRegistryKey flowRegistryKey = FlowRegistryKeyFactory.create(flowBuilder.build());
 214                 final FlowId flowId = deviceContext.getDeviceFlowRegistry().storeIfNecessary(flowRegistryKey, tableId);
 215
 216                 final FlowKey flowKey = new FlowKey(flowId);
 217                 flowBuilder.setKey(flowKey);
 218                 final TableKey tableKey = new TableKey(tableId);
 219                 final InstanceIdentifier<Flow> flowIdent = fNodeIdent.child(Table.class, tableKey).child(Flow.class, flowKey);
 220                 deviceContext.writeToTransaction(LogicalDatastoreType.OPERATIONAL, flowIdent, flowBuilder.build());
 221             }
 222         }
 223     }
 224
 225     /**
 226      * Method extracts flow statistics out of flowAndStatistics model
 227      *
 228      * @param flowAndStats
 229      */
 230     private static FlowStatisticsDataBuilder refineFlowStatisticsAugmentation(final FlowAndStatisticsMapList flowAndStats) {
 231         final FlowStatisticsBuilder flowStatisticsBuilder = new FlowStatisticsBuilder(flowAndStats);
 232         final FlowStatisticsDataBuilder flowStatisticsDataBld = new FlowStatisticsDataBuilder();
 233         flowStatisticsDataBld.setFlowStatistics(flowStatisticsBuilder.build());
 234         return flowStatisticsDataBld;
 235     }
 236
 237     public static void deleteAllKnownFlows(final DeviceContext deviceContext) {
 238         if (deviceContext.getDeviceState().deviceSynchronized()) {
 239             InstanceIdentifier<FlowCapableNode> flowCapableNodePath = assembleFlowCapableNodeInstanceIdentifier(deviceContext);
 240             final Short numOfTablesOnDevice = deviceContext.getDeviceState().getFeatures().getTables();
 241             for (short i = 0; i < numOfTablesOnDevice; i++) {
 242                 final KeyedInstanceIdentifier<Table, TableKey> iiToTable = flowCapableNodePath.child(Table.class, new TableKey(i));
 243                 final ReadTransaction readTx = deviceContext.getReadTransaction();
 244                 final CheckedFuture<Optional<Table>, ReadFailedException> tableDataFuture = readTx.read(LogicalDatastoreType.OPERATIONAL, iiToTable);
 245                 try {
 246                     final Optional<Table> tableDataOpt = tableDataFuture.get();
 247                     if (tableDataOpt.isPresent()) {
 248                         final Table tableData = tableDataOpt.get();
 249                         final Table table = new TableBuilder(tableData).setFlow(Collections.<Flow>emptyList()).build();
 250                         deviceContext.writeToTransaction(LogicalDatastoreType.OPERATIONAL, iiToTable, table);
 251                     }
 252                 } catch (final InterruptedException e) {
 253                     LOG.trace("Reading of table features for table wit ID {} was interrputed.", i);
 254                 } catch (final ExecutionException e) {
 255                     LOG.trace("Reading of table features for table wit ID {} encountered execution exception {}.", i, e);
 256                 }
 257             }
 258         }
 259     }
 260
 261     private static void processQueueStatistics(final Iterable<QueueStatisticsUpdate> data, final DeviceContext deviceContext) {
 262         // TODO: clean all queues of all node-connectors before writing up-to-date stats
 263         final InstanceIdentifier<Node> nodeIdent = deviceContext.getDeviceState().getNodeInstanceIdentifier();
 264         for (final QueueStatisticsUpdate queueStatisticsUpdate : data) {
 265             for (final QueueIdAndStatisticsMap queueStat : queueStatisticsUpdate.getQueueIdAndStatisticsMap()) {
 266                 if (queueStat.getQueueId() != null) {
 267                     final FlowCapableNodeConnectorQueueStatistics statChild =
 268                             new FlowCapableNodeConnectorQueueStatisticsBuilder(queueStat).build();
 269                     final FlowCapableNodeConnectorQueueStatisticsDataBuilder statBuild =
 270                             new FlowCapableNodeConnectorQueueStatisticsDataBuilder();
 271                     statBuild.setFlowCapableNodeConnectorQueueStatistics(statChild);
 272                     final QueueKey qKey = new QueueKey(queueStat.getQueueId());
 273                     final InstanceIdentifier<Queue> queueIdent = nodeIdent
 274                             .child(NodeConnector.class, new NodeConnectorKey(queueStat.getNodeConnectorId()))
 275                             .augmentation(FlowCapableNodeConnector.class)
 276                             .child(Queue.class, qKey);
 277                     final QueueBuilder queueBuilder = new QueueBuilder()
 278                             .setKey(qKey)
 279                             .setQueueId(queueStat.getQueueId())
 280                             // node-connector-id is already contained in parent node and the port-id here is of incompatible format
 281                             .addAugmentation(FlowCapableNodeConnectorQueueStatisticsData.class, statBuild.build());
 282                     deviceContext.writeToTransaction(LogicalDatastoreType.OPERATIONAL, queueIdent, queueBuilder.build());
 283                 }
 284             }
 285         }
 286         deviceContext.submitTransaction();
 287     }
 288
 289     private static void processFlowTableStatistics(final Iterable<FlowTableStatisticsUpdate> data, final DeviceContext deviceContext) {
 290         final InstanceIdentifier<FlowCapableNode> fNodeIdent = assembleFlowCapableNodeInstanceIdentifier(deviceContext);
 291         for (final FlowTableStatisticsUpdate flowTableStatisticsUpdate : data) {
 292
 293             for (final FlowTableAndStatisticsMap tableStat : flowTableStatisticsUpdate.getFlowTableAndStatisticsMap()) {
 294                 final InstanceIdentifier<FlowTableStatistics> tStatIdent = fNodeIdent.child(Table.class, new TableKey(tableStat.getTableId().getValue()))
 295                         .augmentation(FlowTableStatisticsData.class).child(FlowTableStatistics.class);
 296                 final FlowTableStatistics stats = new FlowTableStatisticsBuilder(tableStat).build();
 297                 deviceContext.writeToTransaction(LogicalDatastoreType.OPERATIONAL, tStatIdent, stats);
 298             }
 299         }
 300         deviceContext.submitTransaction();
 301     }
 302
 303     private static void processNodeConnectorStatistics(final Iterable<NodeConnectorStatisticsUpdate> data, final DeviceContext deviceContext) {
 304         final InstanceIdentifier<Node> nodeIdent = deviceContext.getDeviceState().getNodeInstanceIdentifier();
 305         for (final NodeConnectorStatisticsUpdate nodeConnectorStatisticsUpdate : data) {
 306             for (final NodeConnectorStatisticsAndPortNumberMap nConnectPort : nodeConnectorStatisticsUpdate.getNodeConnectorStatisticsAndPortNumberMap()) {
 307                 final FlowCapableNodeConnectorStatistics stats = new FlowCapableNodeConnectorStatisticsBuilder(nConnectPort).build();
 308                 final NodeConnectorKey key = new NodeConnectorKey(nConnectPort.getNodeConnectorId());
 309                 final InstanceIdentifier<NodeConnector> nodeConnectorIdent = nodeIdent.child(NodeConnector.class, key);
 310                 final InstanceIdentifier<FlowCapableNodeConnectorStatisticsData> nodeConnStatIdent = nodeConnectorIdent
 311                         .augmentation(FlowCapableNodeConnectorStatisticsData.class);
 312                 final InstanceIdentifier<FlowCapableNodeConnectorStatistics> flowCapNodeConnStatIdent =
 313                         nodeConnStatIdent.child(FlowCapableNodeConnectorStatistics.class);
 314                 deviceContext.writeToTransaction(LogicalDatastoreType.OPERATIONAL, flowCapNodeConnStatIdent, stats);
 315             }
 316         }
 317         deviceContext.submitTransaction();
 318     }
 319
 320     private static void processMetersStatistics(final Iterable<MeterStatisticsUpdated> data,
 321                                                 final DeviceContext deviceContext) {
 322         final InstanceIdentifier<FlowCapableNode> fNodeIdent = assembleFlowCapableNodeInstanceIdentifier(deviceContext);
 323         for (final MeterStatisticsUpdated meterStatisticsUpdated : data) {
 324             for (final MeterStats mStat : meterStatisticsUpdated.getMeterStats()) {
 325                 final MeterStatistics stats = new MeterStatisticsBuilder(mStat).build();
 326                 final MeterId meterId = mStat.getMeterId();
 327                 final InstanceIdentifier<Meter> meterIdent = fNodeIdent.child(Meter.class, new MeterKey(meterId));
 328                 final InstanceIdentifier<NodeMeterStatistics> nodeMeterStatIdent = meterIdent
 329                         .augmentation(NodeMeterStatistics.class);
 330                 final InstanceIdentifier<MeterStatistics> msIdent = nodeMeterStatIdent.child(MeterStatistics.class);
 331                 deviceContext.writeToTransaction(LogicalDatastoreType.OPERATIONAL, msIdent, stats);
 332             }
 333         }
 334         deviceContext.submitTransaction();
 335     }
 336
 337     private static void deleteAllKnownMeters(final DeviceContext deviceContext, final InstanceIdentifier<FlowCapableNode> fNodeIdent) {
 338         for (final MeterId meterId : deviceContext.getDeviceMeterRegistry().getAllMeterIds()) {
 339             final InstanceIdentifier<Meter> meterIdent = fNodeIdent.child(Meter.class, new MeterKey(meterId));
 340             deviceContext.addDeleteToTxChain(LogicalDatastoreType.OPERATIONAL, meterIdent);
 341         }
 342         deviceContext.getDeviceMeterRegistry().removeMarked();
 343     }
 344
 345     private static void processGroupDescStats(final Iterable<GroupDescStatsUpdated> data, final DeviceContext deviceContext) {
 346         final InstanceIdentifier<FlowCapableNode> fNodeIdent =
 347                 deviceContext.getDeviceState().getNodeInstanceIdentifier().augmentation(FlowCapableNode.class);
 348         deleteAllKnownGroups(deviceContext, fNodeIdent);
 349
 350         for (final GroupDescStatsUpdated groupDescStatsUpdated : data) {
 351             for (final GroupDescStats groupDescStats : groupDescStatsUpdated.getGroupDescStats()) {
 352                 final GroupId groupId = groupDescStats.getGroupId();
 353
 354                 final GroupBuilder groupBuilder = new GroupBuilder(groupDescStats);
 355                 groupBuilder.setKey(new GroupKey(groupId));
 356                 groupBuilder.addAugmentation(NodeGroupStatistics.class, new NodeGroupStatisticsBuilder().build());
 357
 358                 final InstanceIdentifier<Group> groupIdent = fNodeIdent.child(Group.class, new GroupKey(groupId));
 359
 360                 deviceContext.getDeviceGroupRegistry().store(groupId);
 361                 deviceContext.writeToTransaction(LogicalDatastoreType.OPERATIONAL, groupIdent, groupBuilder.build());
 362             }
 363         }
 364         deviceContext.submitTransaction();
 365     }
 366
 367     private static void deleteAllKnownGroups(final DeviceContext deviceContext, final InstanceIdentifier<FlowCapableNode> fNodeIdent) {
 368         for (final GroupId groupId : deviceContext.getDeviceGroupRegistry().getAllGroupIds()) {
 369             final InstanceIdentifier<Group> groupIdent = fNodeIdent.child(Group.class, new GroupKey(groupId));
 370             deviceContext.addDeleteToTxChain(LogicalDatastoreType.OPERATIONAL, groupIdent);
 371         }
 372         deviceContext.getDeviceGroupRegistry().removeMarked();
 373     }
 374
 375     private static void processGroupStatistics(final Iterable<GroupStatisticsUpdated> data, final DeviceContext deviceContext) {
 376         final InstanceIdentifier<FlowCapableNode> fNodeIdent = assembleFlowCapableNodeInstanceIdentifier(deviceContext);
 377         for (final GroupStatisticsUpdated groupStatistics : data) {
 378             for (final GroupStats groupStats : groupStatistics.getGroupStats()) {
 379
 380                 final InstanceIdentifier<Group> groupIdent = fNodeIdent.child(Group.class, new GroupKey(groupStats.getGroupId()));
 381                 final InstanceIdentifier<NodeGroupStatistics> nGroupStatIdent = groupIdent
 382                         .augmentation(NodeGroupStatistics.class);
 383
 384                 final InstanceIdentifier<GroupStatistics> gsIdent = nGroupStatIdent.child(GroupStatistics.class);
 385                 final GroupStatistics stats = new GroupStatisticsBuilder(groupStats).build();
 386                 deviceContext.writeToTransaction(LogicalDatastoreType.OPERATIONAL, gsIdent, stats);
 387             }
 388         }
 389         deviceContext.submitTransaction();
 390     }
 391
 392     private static InstanceIdentifier<FlowCapableNode> assembleFlowCapableNodeInstanceIdentifier(final DeviceContext deviceContext) {
 393         return deviceContext.getDeviceState().getNodeInstanceIdentifier().augmentation(FlowCapableNode.class);
 394     }
 395 }