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.AsyncFunction;
  15 import com.google.common.util.concurrent.CheckedFuture;
  16 import com.google.common.util.concurrent.Futures;
  17 import com.google.common.util.concurrent.JdkFutureAdapters;
  18 import com.google.common.util.concurrent.ListenableFuture;
  19 import org.opendaylight.controller.md.sal.binding.api.ReadOnlyTransaction;
  20 import org.opendaylight.controller.md.sal.common.api.data.LogicalDatastoreType;
  21 import org.opendaylight.controller.md.sal.common.api.data.ReadFailedException;
  22 import org.opendaylight.controller.md.sal.common.api.data.TransactionChainClosedException;
  23 import org.opendaylight.openflowplugin.api.openflow.device.DeviceContext;
  24 import org.opendaylight.openflowplugin.api.openflow.device.DeviceInfo;
  25 import org.opendaylight.openflowplugin.api.openflow.device.DeviceRegistry;
  26 import org.opendaylight.openflowplugin.api.openflow.device.TxFacade;
  27 import org.opendaylight.openflowplugin.api.openflow.registry.flow.DeviceFlowRegistry;
  28 import org.opendaylight.openflowplugin.api.openflow.registry.flow.FlowRegistryKey;
  29 import org.opendaylight.openflowplugin.api.openflow.registry.group.DeviceGroupRegistry;
  30 import org.opendaylight.openflowplugin.api.openflow.registry.meter.DeviceMeterRegistry;
  31 import org.opendaylight.openflowplugin.api.openflow.statistics.ofpspecific.EventIdentifier;
  32 import org.opendaylight.openflowplugin.api.openflow.statistics.ofpspecific.StatisticsGatherer;
  33 import org.opendaylight.openflowplugin.impl.registry.flow.FlowRegistryKeyFactory;
  34 import org.opendaylight.openflowplugin.impl.statistics.ofpspecific.EventsTimeCounter;
  35 import org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.yang.types.rev130715.DateAndTime;
  36 import org.opendaylight.yang.gen.v1.urn.opendaylight.flow.inventory.rev130819.FlowCapableNode;
  37 import org.opendaylight.yang.gen.v1.urn.opendaylight.flow.inventory.rev130819.FlowCapableNodeConnector;
  38 import org.opendaylight.yang.gen.v1.urn.opendaylight.flow.inventory.rev130819.FlowCapableStatisticsGatheringStatus;
  39 import org.opendaylight.yang.gen.v1.urn.opendaylight.flow.inventory.rev130819.FlowCapableStatisticsGatheringStatusBuilder;
  40 import org.opendaylight.yang.gen.v1.urn.opendaylight.flow.inventory.rev130819.FlowId;
  41 import org.opendaylight.yang.gen.v1.urn.opendaylight.flow.inventory.rev130819.meters.Meter;
  42 import org.opendaylight.yang.gen.v1.urn.opendaylight.flow.inventory.rev130819.meters.MeterBuilder;
  43 import org.opendaylight.yang.gen.v1.urn.opendaylight.flow.inventory.rev130819.meters.MeterKey;
  44 import org.opendaylight.yang.gen.v1.urn.opendaylight.flow.inventory.rev130819.snapshot.gathering.status.grouping.SnapshotGatheringStatusEnd;
  45 import org.opendaylight.yang.gen.v1.urn.opendaylight.flow.inventory.rev130819.snapshot.gathering.status.grouping.SnapshotGatheringStatusEndBuilder;
  46 import org.opendaylight.yang.gen.v1.urn.opendaylight.flow.inventory.rev130819.snapshot.gathering.status.grouping.SnapshotGatheringStatusStartBuilder;
  47 import org.opendaylight.yang.gen.v1.urn.opendaylight.flow.inventory.rev130819.tables.Table;
  48 import org.opendaylight.yang.gen.v1.urn.opendaylight.flow.inventory.rev130819.tables.TableBuilder;
  49 import org.opendaylight.yang.gen.v1.urn.opendaylight.flow.inventory.rev130819.tables.TableKey;
  50 import org.opendaylight.yang.gen.v1.urn.opendaylight.flow.inventory.rev130819.tables.table.Flow;
  51 import org.opendaylight.yang.gen.v1.urn.opendaylight.flow.inventory.rev130819.tables.table.FlowBuilder;
  52 import org.opendaylight.yang.gen.v1.urn.opendaylight.flow.inventory.rev130819.tables.table.FlowKey;
  53 import org.opendaylight.yang.gen.v1.urn.opendaylight.flow.statistics.rev130819.FlowStatisticsData;
  54 import org.opendaylight.yang.gen.v1.urn.opendaylight.flow.statistics.rev130819.FlowStatisticsDataBuilder;
  55 import org.opendaylight.yang.gen.v1.urn.opendaylight.flow.statistics.rev130819.FlowsStatisticsUpdate;
  56 import org.opendaylight.yang.gen.v1.urn.opendaylight.flow.statistics.rev130819.flow.and.statistics.map.list.FlowAndStatisticsMapList;
  57 import org.opendaylight.yang.gen.v1.urn.opendaylight.flow.statistics.rev130819.flow.statistics.FlowStatisticsBuilder;
  58 import org.opendaylight.yang.gen.v1.urn.opendaylight.flow.table.statistics.rev131215.FlowTableStatisticsData;
  59 import org.opendaylight.yang.gen.v1.urn.opendaylight.flow.table.statistics.rev131215.FlowTableStatisticsUpdate;
  60 import org.opendaylight.yang.gen.v1.urn.opendaylight.flow.table.statistics.rev131215.flow.table.and.statistics.map.FlowTableAndStatisticsMap;
  61 import org.opendaylight.yang.gen.v1.urn.opendaylight.flow.table.statistics.rev131215.flow.table.statistics.FlowTableStatistics;
  62 import org.opendaylight.yang.gen.v1.urn.opendaylight.flow.table.statistics.rev131215.flow.table.statistics.FlowTableStatisticsBuilder;
  63 import org.opendaylight.yang.gen.v1.urn.opendaylight.flow.types.port.rev130925.queues.Queue;
  64 import org.opendaylight.yang.gen.v1.urn.opendaylight.flow.types.port.rev130925.queues.QueueBuilder;
  65 import org.opendaylight.yang.gen.v1.urn.opendaylight.flow.types.port.rev130925.queues.QueueKey;
  66 import org.opendaylight.yang.gen.v1.urn.opendaylight.group.statistics.rev131111.GroupDescStatsUpdated;
  67 import org.opendaylight.yang.gen.v1.urn.opendaylight.group.statistics.rev131111.GroupStatisticsUpdated;
  68 import org.opendaylight.yang.gen.v1.urn.opendaylight.group.statistics.rev131111.NodeGroupStatistics;
  69 import org.opendaylight.yang.gen.v1.urn.opendaylight.group.statistics.rev131111.NodeGroupStatisticsBuilder;
  70 import org.opendaylight.yang.gen.v1.urn.opendaylight.group.statistics.rev131111.group.statistics.GroupStatistics;
  71 import org.opendaylight.yang.gen.v1.urn.opendaylight.group.statistics.rev131111.group.statistics.GroupStatisticsBuilder;
  72 import org.opendaylight.yang.gen.v1.urn.opendaylight.group.types.rev131018.GroupId;
  73 import org.opendaylight.yang.gen.v1.urn.opendaylight.group.types.rev131018.group.desc.stats.reply.GroupDescStats;
  74 import org.opendaylight.yang.gen.v1.urn.opendaylight.group.types.rev131018.group.statistics.reply.GroupStats;
  75 import org.opendaylight.yang.gen.v1.urn.opendaylight.group.types.rev131018.groups.Group;
  76 import org.opendaylight.yang.gen.v1.urn.opendaylight.group.types.rev131018.groups.GroupBuilder;
  77 import org.opendaylight.yang.gen.v1.urn.opendaylight.group.types.rev131018.groups.GroupKey;
  78 import org.opendaylight.yang.gen.v1.urn.opendaylight.inventory.rev130819.node.NodeConnector;
  79 import org.opendaylight.yang.gen.v1.urn.opendaylight.inventory.rev130819.node.NodeConnectorKey;
  80 import org.opendaylight.yang.gen.v1.urn.opendaylight.inventory.rev130819.nodes.Node;
  81 import org.opendaylight.yang.gen.v1.urn.opendaylight.meter.statistics.rev131111.MeterConfigStatsUpdated;
  82 import org.opendaylight.yang.gen.v1.urn.opendaylight.meter.statistics.rev131111.MeterStatisticsUpdated;
  83 import org.opendaylight.yang.gen.v1.urn.opendaylight.meter.statistics.rev131111.NodeMeterStatistics;
  84 import org.opendaylight.yang.gen.v1.urn.opendaylight.meter.statistics.rev131111.NodeMeterStatisticsBuilder;
  85 import org.opendaylight.yang.gen.v1.urn.opendaylight.meter.statistics.rev131111.nodes.node.meter.MeterStatistics;
  86 import org.opendaylight.yang.gen.v1.urn.opendaylight.meter.statistics.rev131111.nodes.node.meter.MeterStatisticsBuilder;
  87 import org.opendaylight.yang.gen.v1.urn.opendaylight.meter.types.rev130918.MeterId;
  88 import org.opendaylight.yang.gen.v1.urn.opendaylight.meter.types.rev130918.meter.config.stats.reply.MeterConfigStats;
  89 import org.opendaylight.yang.gen.v1.urn.opendaylight.meter.types.rev130918.meter.statistics.reply.MeterStats;
  90 import org.opendaylight.yang.gen.v1.urn.opendaylight.openflow.common.types.rev130731.MultipartType;
  91 import org.opendaylight.yang.gen.v1.urn.opendaylight.openflow.protocol.rev130731.MultipartReply;
  92 import org.opendaylight.yang.gen.v1.urn.opendaylight.port.statistics.rev131214.FlowCapableNodeConnectorStatisticsData;
  93 import org.opendaylight.yang.gen.v1.urn.opendaylight.port.statistics.rev131214.NodeConnectorStatisticsUpdate;
  94 import org.opendaylight.yang.gen.v1.urn.opendaylight.port.statistics.rev131214.flow.capable.node.connector.statistics.FlowCapableNodeConnectorStatistics;
  95 import org.opendaylight.yang.gen.v1.urn.opendaylight.port.statistics.rev131214.flow.capable.node.connector.statistics.FlowCapableNodeConnectorStatisticsBuilder;
  96 import org.opendaylight.yang.gen.v1.urn.opendaylight.port.statistics.rev131214.node.connector.statistics.and.port.number.map.NodeConnectorStatisticsAndPortNumberMap;
  97 import org.opendaylight.yang.gen.v1.urn.opendaylight.queue.statistics.rev131216.FlowCapableNodeConnectorQueueStatisticsData;
  98 import org.opendaylight.yang.gen.v1.urn.opendaylight.queue.statistics.rev131216.FlowCapableNodeConnectorQueueStatisticsDataBuilder;
  99 import org.opendaylight.yang.gen.v1.urn.opendaylight.queue.statistics.rev131216.QueueStatisticsUpdate;
 100 import org.opendaylight.yang.gen.v1.urn.opendaylight.queue.statistics.rev131216.flow.capable.node.connector.queue.statistics.FlowCapableNodeConnectorQueueStatistics;
 101 import org.opendaylight.yang.gen.v1.urn.opendaylight.queue.statistics.rev131216.flow.capable.node.connector.queue.statistics.FlowCapableNodeConnectorQueueStatisticsBuilder;
 102 import org.opendaylight.yang.gen.v1.urn.opendaylight.queue.statistics.rev131216.queue.id.and.statistics.map.QueueIdAndStatisticsMap;
 103 import org.opendaylight.yangtools.yang.binding.DataObject;
 104 import org.opendaylight.yangtools.yang.binding.InstanceIdentifier;
 105 import org.opendaylight.yangtools.yang.common.RpcResult;
 106 import org.slf4j.Logger;
 107 import org.slf4j.LoggerFactory;
 108
 109 import javax.annotation.Nullable;
 110 import java.text.SimpleDateFormat;
 111 import java.util.Collections;
 112 import java.util.Date;
 113 import java.util.List;
 114 import java.util.concurrent.ExecutionException;
 115
 116 /**
 117  * Utils for gathering statistics.
 118  */
 119 public final class StatisticsGatheringUtils {
 120
 121     private static String DATE_AND_TIME_FORMAT = "yyyy-MM-dd'T'HH:mm:ss.SSSXXX";
 122
 123     private static final Logger LOG = LoggerFactory.getLogger(StatisticsGatheringUtils.class);
 124     private static final String QUEUE2_REQCTX = "QUEUE2REQCTX-";
 125
 126     private StatisticsGatheringUtils() {
 127         throw new IllegalStateException("This class should not be instantiated.");
 128     }
 129
 130     //TODO: Flow-,Group- and Meter- registry should be not in device context, consider move it in separate class
 131     static ListenableFuture<Boolean> gatherStatistics(
 132                         final StatisticsGatherer statisticsGatheringService,
 133                         final DeviceInfo deviceInfo,
 134                         final MultipartType type,
 135                         final TxFacade txFacade,
 136                         final DeviceRegistry registry,
 137                         final Boolean initial,
 138                         final SinglePurposeMultipartReplyTranslator multipartReplyTranslator) {
 139         EventIdentifier wholeProcessEventIdentifier = null;
 140         if (MultipartType.OFPMPFLOW.equals(type)) {
 141             wholeProcessEventIdentifier = new EventIdentifier(type.toString(), deviceInfo.getNodeId().getValue());
 142             EventsTimeCounter.markStart(wholeProcessEventIdentifier);
 143         }
 144         final EventIdentifier ofpQueueToRequestContextEventIdentifier
 145                 = new EventIdentifier(QUEUE2_REQCTX + type.toString(), deviceInfo.getNodeId().toString());
 146         final ListenableFuture<RpcResult<List<MultipartReply>>> statisticsDataInFuture =
 147                 JdkFutureAdapters.listenInPoolThread(statisticsGatheringService.getStatisticsOfType(
 148                         ofpQueueToRequestContextEventIdentifier, type));
 149         return transformAndStoreStatisticsData(
 150                 statisticsDataInFuture,
 151                 deviceInfo,
 152                 wholeProcessEventIdentifier,
 153                 type,
 154                 txFacade,
 155                 registry,
 156                 initial,
 157                 multipartReplyTranslator);
 158     }
 159
 160     private static ListenableFuture<Boolean> transformAndStoreStatisticsData(
 161                         final ListenableFuture<RpcResult<List<MultipartReply>>> statisticsDataInFuture,
 162                         final DeviceInfo deviceInfo,
 163                         final EventIdentifier eventIdentifier,
 164                         final MultipartType type,
 165                         final TxFacade txFacade,
 166                         final DeviceRegistry registry,
 167                         final boolean initial,
 168                         final SinglePurposeMultipartReplyTranslator multipartReplyTranslator) {
 169         return Futures.transform(statisticsDataInFuture, new AsyncFunction<RpcResult<List<MultipartReply>>, Boolean>() {
 170             @Nullable
 171             @Override
 172             public ListenableFuture<Boolean> apply(final RpcResult<List<MultipartReply>> rpcResult) {
 173                 boolean isMultipartProcessed = Boolean.TRUE;
 174                 if (rpcResult.isSuccessful()) {
 175                     if (LOG.isDebugEnabled()) {
 176                         LOG.debug("Stats reply successfully received for node {} of type {}",
 177                                 deviceInfo.getNodeId(), type);
 178                     }
 179
 180                     // TODO: in case the result value is null then multipart data probably got processed on the fly -
 181                     // TODO: this contract should by clearly stated and enforced - now simple true value is returned
 182                     if (null != rpcResult.getResult()) {
 183                         Iterable<? extends DataObject> allMultipartData = Collections.emptyList();
 184                         DataObject multipartData = null;
 185
 186
 187                         try {
 188                             for (final MultipartReply singleReply : rpcResult.getResult()) {
 189                                 final List<? extends DataObject> multipartDataList = multipartReplyTranslator.translate(
 190                                         deviceInfo.getDatapathId(),
 191                                         deviceInfo.getVersion(), singleReply);
 192                                 multipartData = multipartDataList.get(0);
 193                                 allMultipartData = Iterables.concat(allMultipartData, multipartDataList);
 194                             }
 195                         } catch (final TransactionChainClosedException e) {
 196                             LOG.warn("stats processing of type {} for node {} failed during transformation step",
 197                                     type, deviceInfo.getNodeId(), e);
 198                             return Futures.immediateFailedFuture(e);
 199                         }
 200
 201
 202                         try {
 203                             if (multipartData instanceof GroupStatisticsUpdated) {
 204                                 processGroupStatistics(
 205                                         (Iterable<GroupStatisticsUpdated>) allMultipartData,
 206                                         deviceInfo,
 207                                         txFacade);
 208                             } else if (multipartData instanceof MeterStatisticsUpdated) {
 209                                 processMetersStatistics(
 210                                         (Iterable<MeterStatisticsUpdated>) allMultipartData,
 211                                         deviceInfo,
 212                                         txFacade);
 213                             } else if (multipartData instanceof NodeConnectorStatisticsUpdate) {
 214                                 processNodeConnectorStatistics(
 215                                         (Iterable<NodeConnectorStatisticsUpdate>) allMultipartData,
 216                                         deviceInfo,
 217                                         txFacade);
 218                             } else if (multipartData instanceof FlowTableStatisticsUpdate) {
 219                                 processFlowTableStatistics(
 220                                         (Iterable<FlowTableStatisticsUpdate>) allMultipartData,
 221                                         deviceInfo,
 222                                         txFacade);
 223                             } else if (multipartData instanceof QueueStatisticsUpdate) {
 224                                 processQueueStatistics(
 225                                         (Iterable<QueueStatisticsUpdate>) allMultipartData,
 226                                         deviceInfo,
 227                                         txFacade);
 228                             } else if (multipartData instanceof FlowsStatisticsUpdate) {
 229                                 /* FlowStat Processing is realized by NettyThread only by initPhase,
 230                                  * otherwise it is realized
 231                                  * by MD-SAL thread */
 232                                 return processFlowStatistics(
 233                                         (Iterable<FlowsStatisticsUpdate>) allMultipartData,
 234                                         deviceInfo,
 235                                         txFacade,
 236                                         registry.getDeviceFlowRegistry(),
 237                                         initial,
 238                                         eventIdentifier);
 239
 240                             } else if (multipartData instanceof GroupDescStatsUpdated) {
 241                                 processGroupDescStats(
 242                                         (Iterable<GroupDescStatsUpdated>) allMultipartData,
 243                                         deviceInfo,
 244                                         txFacade,
 245                                         registry.getDeviceGroupRegistry());
 246                             } else if (multipartData instanceof MeterConfigStatsUpdated) {
 247                                 processMeterConfigStatsUpdated(
 248                                         (Iterable<MeterConfigStatsUpdated>) allMultipartData,
 249                                         deviceInfo,
 250                                         txFacade,
 251                                         registry.getDeviceMeterRegistry());
 252                             } else {
 253                                 isMultipartProcessed = Boolean.FALSE;
 254                             }
 255                         } catch (final TransactionChainClosedException e) {
 256                             LOG.warn("stats processing of type {} for node {} failed during write-to-tx step",
 257                                     type, deviceInfo.getNodeId(), e);
 258                             return Futures.immediateFailedFuture(e);
 259                         }
 260
 261                         if (LOG.isDebugEnabled()) {
 262                             LOG.debug("Stats reply added to transaction for node {} of type {}",
 263                                     deviceInfo.getNodeId(), type);
 264                         }
 265
 266                         //TODO : implement experimenter
 267                     } else {
 268                         if (LOG.isDebugEnabled()) {
 269                             LOG.debug("Stats reply was empty for node {} of type {}",
 270                                     deviceInfo.getNodeId(), type);
 271                         }
 272                     }
 273
 274                 } else {
 275                     if (LOG.isDebugEnabled()) {
 276                         LOG.debug("Stats reply FAILED for node {} of type {}: {}",
 277                                 deviceInfo.getNodeId(), type, rpcResult.getErrors());
 278                     }
 279                     isMultipartProcessed = Boolean.FALSE;
 280                 }
 281                 return Futures.immediateFuture(isMultipartProcessed);
 282             }
 283         });
 284     }
 285
 286     private static void processMeterConfigStatsUpdated(final Iterable<MeterConfigStatsUpdated> data,
 287                                                        final DeviceInfo deviceInfo,
 288                                                        final TxFacade txFacade,
 289                                                        final DeviceMeterRegistry meterRegistry)
 290             throws TransactionChainClosedException {
 291         final InstanceIdentifier<FlowCapableNode> fNodeIdent = assembleFlowCapableNodeInstanceIdentifier(deviceInfo);
 292         deleteAllKnownMeters(meterRegistry, fNodeIdent, txFacade);
 293         for (final MeterConfigStatsUpdated meterConfigStatsUpdated : data) {
 294             for (final MeterConfigStats meterConfigStats : meterConfigStatsUpdated.getMeterConfigStats()) {
 295                 final MeterId meterId = meterConfigStats.getMeterId();
 296                 final InstanceIdentifier<Meter> meterInstanceIdentifier
 297                         = fNodeIdent.child(Meter.class, new MeterKey(meterId));
 298
 299                 final MeterBuilder meterBuilder = new MeterBuilder(meterConfigStats);
 300                 meterBuilder.setKey(new MeterKey(meterId));
 301                 meterBuilder.addAugmentation(NodeMeterStatistics.class, new NodeMeterStatisticsBuilder().build());
 302                 meterRegistry.store(meterId);
 303                 txFacade.writeToTransaction(
 304                         LogicalDatastoreType.OPERATIONAL,
 305                         meterInstanceIdentifier,
 306                         meterBuilder.build());
 307             }
 308         }
 309         txFacade.submitTransaction();
 310     }
 311
 312     private static ListenableFuture<Boolean> processFlowStatistics(final Iterable<FlowsStatisticsUpdate> data,
 313                                                                    final DeviceInfo deviceInfo,
 314                                                                    final TxFacade txFacade,
 315                                                                    final DeviceFlowRegistry flowRegistry,
 316                                                                    final boolean initial,
 317                                                                    final EventIdentifier eventIdentifier) {
 318         final ListenableFuture<Void> deleteFuture
 319                 = initial ? Futures.immediateFuture(null) : deleteAllKnownFlows(deviceInfo, flowRegistry, txFacade);
 320         return Futures.transform(deleteFuture, (Function<Void, Boolean>) input -> {
 321             writeFlowStatistics(data, deviceInfo, flowRegistry, txFacade);
 322             txFacade.submitTransaction();
 323             EventsTimeCounter.markEnd(eventIdentifier);
 324             return Boolean.TRUE;
 325         });
 326     }
 327
 328     public static void writeFlowStatistics(final Iterable<FlowsStatisticsUpdate> data,
 329                                            final DeviceInfo deviceInfo,
 330                                            final DeviceFlowRegistry registry,
 331                                            final TxFacade txFacade) {
 332         final InstanceIdentifier<FlowCapableNode> fNodeIdent = assembleFlowCapableNodeInstanceIdentifier(deviceInfo);
 333         try {
 334             for (final FlowsStatisticsUpdate flowsStatistics : data) {
 335                 for (final FlowAndStatisticsMapList flowStat : flowsStatistics.getFlowAndStatisticsMapList()) {
 336                     final FlowBuilder flowBuilder = new FlowBuilder(flowStat);
 337                     flowBuilder.addAugmentation(FlowStatisticsData.class,
 338                             refineFlowStatisticsAugmentation(flowStat).build());
 339
 340                     final short tableId = flowStat.getTableId();
 341                     final FlowRegistryKey flowRegistryKey = FlowRegistryKeyFactory.create(deviceInfo.getVersion(), flowBuilder.build());
 342                     final FlowId flowId = registry.storeIfNecessary(flowRegistryKey);
 343
 344                     final FlowKey flowKey = new FlowKey(flowId);
 345                     flowBuilder.setKey(flowKey);
 346                     final TableKey tableKey = new TableKey(tableId);
 347                     final InstanceIdentifier<Flow> flowIdent
 348                             = fNodeIdent.child(Table.class, tableKey).child(Flow.class, flowKey);
 349                     txFacade.writeToTransaction(LogicalDatastoreType.OPERATIONAL, flowIdent, flowBuilder.build());
 350                 }
 351             }
 352         } catch (TransactionChainClosedException e) {
 353             LOG.warn("Not able to write to transaction chain: {}", e.getMessage());
 354         }
 355     }
 356
 357     /**
 358      * Method extracts flow statistics out of flowAndStatistics model.
 359      *
 360      * @param flowAndStats flow statistics map list
 361      */
 362     private static FlowStatisticsDataBuilder refineFlowStatisticsAugmentation(
 363             final FlowAndStatisticsMapList flowAndStats) {
 364         final FlowStatisticsBuilder flowStatisticsBuilder = new FlowStatisticsBuilder(flowAndStats);
 365         final FlowStatisticsDataBuilder flowStatisticsDataBld = new FlowStatisticsDataBuilder();
 366         flowStatisticsDataBld.setFlowStatistics(flowStatisticsBuilder.build());
 367         return flowStatisticsDataBld;
 368     }
 369
 370     public static ListenableFuture<Void> deleteAllKnownFlows(final DeviceInfo deviceInfo,
 371                                                              final DeviceFlowRegistry registry,
 372                                                              final TxFacade txFacade) {
 373         final InstanceIdentifier<FlowCapableNode> flowCapableNodePath
 374                 = assembleFlowCapableNodeInstanceIdentifier(deviceInfo);
 375         final ReadOnlyTransaction readTx = txFacade.getReadTransaction();
 376         final CheckedFuture<Optional<FlowCapableNode>, ReadFailedException> flowCapableNodeFuture = readTx.read(
 377                 LogicalDatastoreType.OPERATIONAL, flowCapableNodePath);
 378
 379         /* we wish to close readTx for fallBack */
 380         Futures.withFallback(flowCapableNodeFuture, t -> {
 381             readTx.close();
 382             return Futures.immediateFailedFuture(t);
 383         });
 384         /*
 385          * we have to read actual tables with all information before we set empty Flow list, merge is expensive and
 386          * not applicable for lists
 387          */
 388         return Futures.transform(
 389                 flowCapableNodeFuture, (AsyncFunction<Optional<FlowCapableNode>, Void>) flowCapNodeOpt -> {
 390                     if (flowCapNodeOpt.isPresent()) {
 391                         for (final Table tableData : flowCapNodeOpt.get().getTable()) {
 392                             final Table table = new TableBuilder(tableData).setFlow(Collections.<Flow>emptyList()).build();
 393                             final InstanceIdentifier<Table> iiToTable
 394                                     = flowCapableNodePath.child(Table.class, tableData.getKey());
 395                             txFacade.writeToTransaction(LogicalDatastoreType.OPERATIONAL, iiToTable, table);
 396                         }
 397                     }
 398                     readTx.close();
 399                     return Futures.immediateFuture(null);
 400                 });
 401     }
 402
 403     public static Optional<FlowCapableNode> deleteAllKnownFlows(final DeviceInfo deviceInfo,
 404                                                              final TxFacade txFacade) {
 405         final InstanceIdentifier<FlowCapableNode> flowCapableNodePath
 406                 = assembleFlowCapableNodeInstanceIdentifier(deviceInfo);
 407         final ReadOnlyTransaction readTx = txFacade.getReadTransaction();
 408         final CheckedFuture<Optional<FlowCapableNode>, ReadFailedException> flowCapableNodeFuture = readTx.read(
 409                 LogicalDatastoreType.OPERATIONAL, flowCapableNodePath);
 410
 411         try {
 412             Optional<FlowCapableNode> fcNodeOpt = flowCapableNodeFuture.get();
 413             if ( fcNodeOpt != null && fcNodeOpt.isPresent()){
 414                 for (final Table tableData : flowCapableNodeFuture.get().get().getTable()) {
 415                     final Table table = new TableBuilder(tableData).setFlow(Collections.<Flow>emptyList()).build();
 416                     final InstanceIdentifier<Table> iiToTable = flowCapableNodePath.child(Table.class, tableData.getKey());
 417                     txFacade.writeToTransaction(LogicalDatastoreType.OPERATIONAL, iiToTable, table);
 418                 }
 419                 return fcNodeOpt;
 420             }
 421         } catch (InterruptedException|ExecutionException e) {
 422             LOG.error("Failed to read current OpenFlow node {] operational data", deviceInfo.getNodeId());
 423         } finally {
 424             if (readTx != null){
 425                 readTx.close();
 426             }
 427         }
 428         return Optional.absent();
 429     }
 430
 431     private static void processQueueStatistics(
 432             final Iterable<QueueStatisticsUpdate> data,
 433             final DeviceInfo deviceInfo,
 434             final TxFacade txFacade) throws TransactionChainClosedException {
 435         // TODO: clean all queues of all node-connectors before writing up-to-date stats
 436         final InstanceIdentifier<Node> nodeIdent = deviceInfo.getNodeInstanceIdentifier();
 437         for (final QueueStatisticsUpdate queueStatisticsUpdate : data) {
 438             for (final QueueIdAndStatisticsMap queueStat : queueStatisticsUpdate.getQueueIdAndStatisticsMap()) {
 439                 if (queueStat.getQueueId() != null) {
 440                     final FlowCapableNodeConnectorQueueStatistics statChild =
 441                             new FlowCapableNodeConnectorQueueStatisticsBuilder(queueStat).build();
 442                     final FlowCapableNodeConnectorQueueStatisticsDataBuilder statBuild =
 443                             new FlowCapableNodeConnectorQueueStatisticsDataBuilder();
 444                     statBuild.setFlowCapableNodeConnectorQueueStatistics(statChild);
 445                     final QueueKey qKey = new QueueKey(queueStat.getQueueId());
 446                     final InstanceIdentifier<Queue> queueIdent = nodeIdent
 447                             .child(NodeConnector.class, new NodeConnectorKey(queueStat.getNodeConnectorId()))
 448                             .augmentation(FlowCapableNodeConnector.class)
 449                             .child(Queue.class, qKey);
 450                     final QueueBuilder queueBuilder = new QueueBuilder()
 451                             .setKey(qKey)
 452                             .setQueueId(queueStat.getQueueId())
 453                             // node-connector-id is already contained in parent node
 454                             // and the port-id here is of incompatible format
 455                             .addAugmentation(FlowCapableNodeConnectorQueueStatisticsData.class, statBuild.build());
 456                     txFacade.writeToTransaction(LogicalDatastoreType.OPERATIONAL, queueIdent, queueBuilder.build());
 457                 }
 458             }
 459         }
 460         txFacade.submitTransaction();
 461     }
 462
 463     private static void processFlowTableStatistics(
 464             final Iterable<FlowTableStatisticsUpdate> data,
 465             final DeviceInfo deviceInfo,
 466             final TxFacade txFacade) throws TransactionChainClosedException {
 467         final InstanceIdentifier<FlowCapableNode> fNodeIdent = assembleFlowCapableNodeInstanceIdentifier(deviceInfo);
 468         for (final FlowTableStatisticsUpdate flowTableStatisticsUpdate : data) {
 469
 470             for (final FlowTableAndStatisticsMap tableStat : flowTableStatisticsUpdate.getFlowTableAndStatisticsMap()) {
 471                 final InstanceIdentifier<FlowTableStatistics> tStatIdent
 472                         = fNodeIdent.child(Table.class, new TableKey(tableStat.getTableId().getValue()))
 473                         .augmentation(FlowTableStatisticsData.class).child(FlowTableStatistics.class);
 474                 final FlowTableStatistics stats = new FlowTableStatisticsBuilder(tableStat).build();
 475                 txFacade.writeToTransaction(LogicalDatastoreType.OPERATIONAL, tStatIdent, stats);
 476             }
 477         }
 478         txFacade.submitTransaction();
 479     }
 480
 481     private static void processNodeConnectorStatistics(
 482             final Iterable<NodeConnectorStatisticsUpdate> data,
 483             final DeviceInfo deviceInfo,
 484             final TxFacade txFacade) throws TransactionChainClosedException {
 485         final InstanceIdentifier<Node> nodeIdent = deviceInfo.getNodeInstanceIdentifier();
 486         for (final NodeConnectorStatisticsUpdate nodeConnectorStatisticsUpdate : data) {
 487             for (final NodeConnectorStatisticsAndPortNumberMap nodeConnectPort :
 488                     nodeConnectorStatisticsUpdate.getNodeConnectorStatisticsAndPortNumberMap()) {
 489                 final FlowCapableNodeConnectorStatistics stats
 490                         = new FlowCapableNodeConnectorStatisticsBuilder(nodeConnectPort).build();
 491                 final NodeConnectorKey key = new NodeConnectorKey(nodeConnectPort.getNodeConnectorId());
 492                 final InstanceIdentifier<NodeConnector> nodeConnectorIdent = nodeIdent.child(NodeConnector.class, key);
 493                 final InstanceIdentifier<FlowCapableNodeConnectorStatisticsData> nodeConnStatIdent = nodeConnectorIdent
 494                         .augmentation(FlowCapableNodeConnectorStatisticsData.class);
 495                 final InstanceIdentifier<FlowCapableNodeConnectorStatistics> flowCapNodeConnStatIdent =
 496                         nodeConnStatIdent.child(FlowCapableNodeConnectorStatistics.class);
 497                 txFacade.writeToTransaction(LogicalDatastoreType.OPERATIONAL, flowCapNodeConnStatIdent, stats);
 498             }
 499         }
 500         txFacade.submitTransaction();
 501     }
 502
 503     private static void processMetersStatistics(final Iterable<MeterStatisticsUpdated> data,
 504                                                 final DeviceInfo deviceInfo,
 505                                                 final TxFacade txFacade) throws TransactionChainClosedException {
 506         final InstanceIdentifier<FlowCapableNode> fNodeIdent = assembleFlowCapableNodeInstanceIdentifier(deviceInfo);
 507         for (final MeterStatisticsUpdated meterStatisticsUpdated : data) {
 508             for (final MeterStats meterStats : meterStatisticsUpdated.getMeterStats()) {
 509                 final MeterStatistics stats = new MeterStatisticsBuilder(meterStats).build();
 510                 final MeterId meterId = meterStats.getMeterId();
 511                 final InstanceIdentifier<Meter> meterIdent = fNodeIdent.child(Meter.class, new MeterKey(meterId));
 512                 final InstanceIdentifier<NodeMeterStatistics> nodeMeterStatIdent = meterIdent
 513                         .augmentation(NodeMeterStatistics.class);
 514                 final InstanceIdentifier<MeterStatistics> msIdent = nodeMeterStatIdent.child(MeterStatistics.class);
 515                 txFacade.writeToTransaction(LogicalDatastoreType.OPERATIONAL, msIdent, stats);
 516             }
 517         }
 518         txFacade.submitTransaction();
 519     }
 520
 521     private static void deleteAllKnownMeters(
 522             final DeviceMeterRegistry meterRegistry,
 523             final InstanceIdentifier<FlowCapableNode> flowNodeIdent,
 524             final TxFacade txFacade) throws TransactionChainClosedException {
 525         for (final MeterId meterId : meterRegistry.getAllMeterIds()) {
 526             final InstanceIdentifier<Meter> meterIdent = flowNodeIdent.child(Meter.class, new MeterKey(meterId));
 527             txFacade.addDeleteToTxChain(LogicalDatastoreType.OPERATIONAL, meterIdent);
 528         }
 529         meterRegistry.removeMarked();
 530     }
 531
 532     private static void processGroupDescStats(
 533             final Iterable<GroupDescStatsUpdated> data,
 534             final DeviceInfo deviceInfo,
 535             final TxFacade txFacade,
 536             final DeviceGroupRegistry groupRegistry) throws TransactionChainClosedException {
 537         final InstanceIdentifier<FlowCapableNode> fNodeIdent = assembleFlowCapableNodeInstanceIdentifier(deviceInfo);
 538         deleteAllKnownGroups(txFacade, fNodeIdent, groupRegistry);
 539
 540         for (final GroupDescStatsUpdated groupDescStatsUpdated : data) {
 541             for (final GroupDescStats groupDescStats : groupDescStatsUpdated.getGroupDescStats()) {
 542                 final GroupId groupId = groupDescStats.getGroupId();
 543
 544                 final GroupBuilder groupBuilder = new GroupBuilder(groupDescStats);
 545                 groupBuilder.setKey(new GroupKey(groupId));
 546                 groupBuilder.addAugmentation(NodeGroupStatistics.class, new NodeGroupStatisticsBuilder().build());
 547
 548                 final InstanceIdentifier<Group> groupIdent = fNodeIdent.child(Group.class, new GroupKey(groupId));
 549
 550                 groupRegistry.store(groupId);
 551                 txFacade.writeToTransaction(LogicalDatastoreType.OPERATIONAL, groupIdent, groupBuilder.build());
 552             }
 553         }
 554         txFacade.submitTransaction();
 555     }
 556
 557     private static void deleteAllKnownGroups(
 558             final TxFacade txFacade,
 559             final InstanceIdentifier<FlowCapableNode> flowNodeIdent,
 560             final DeviceGroupRegistry groupRegistry) throws TransactionChainClosedException {
 561         for (final GroupId groupId : groupRegistry.getAllGroupIds()) {
 562             final InstanceIdentifier<Group> groupIdent = flowNodeIdent.child(Group.class, new GroupKey(groupId));
 563             txFacade.addDeleteToTxChain(LogicalDatastoreType.OPERATIONAL, groupIdent);
 564         }
 565         groupRegistry.removeMarked();
 566     }
 567
 568     private static void processGroupStatistics(
 569             final Iterable<GroupStatisticsUpdated> data,
 570             final DeviceInfo deviceInfo,
 571             final TxFacade txFacade) throws TransactionChainClosedException {
 572         final InstanceIdentifier<FlowCapableNode> fNodeIdent = assembleFlowCapableNodeInstanceIdentifier(deviceInfo);
 573         for (final GroupStatisticsUpdated groupStatistics : data) {
 574             for (final GroupStats groupStats : groupStatistics.getGroupStats()) {
 575
 576                 final InstanceIdentifier<Group> groupIdent
 577                         = fNodeIdent.child(Group.class, new GroupKey(groupStats.getGroupId()));
 578                 final InstanceIdentifier<NodeGroupStatistics> nGroupStatIdent = groupIdent
 579                         .augmentation(NodeGroupStatistics.class);
 580
 581                 final InstanceIdentifier<GroupStatistics> gsIdent = nGroupStatIdent.child(GroupStatistics.class);
 582                 final GroupStatistics stats = new GroupStatisticsBuilder(groupStats).build();
 583                 txFacade.writeToTransaction(LogicalDatastoreType.OPERATIONAL, gsIdent, stats);
 584             }
 585         }
 586         txFacade.submitTransaction();
 587     }
 588
 589     private static InstanceIdentifier<FlowCapableNode> assembleFlowCapableNodeInstanceIdentifier(
 590             final DeviceInfo deviceInfo) {
 591         return deviceInfo.getNodeInstanceIdentifier().augmentation(FlowCapableNode.class);
 592     }
 593
 594     /**
 595      * Writes snapshot gathering start timestamp + cleans end mark.
 596      *
 597      * @param deviceContext txManager + node path keeper
 598      */
 599     static void markDeviceStateSnapshotStart(final DeviceContext deviceContext) {
 600         final InstanceIdentifier<FlowCapableStatisticsGatheringStatus> statusPath = deviceContext.getDeviceInfo()
 601                 .getNodeInstanceIdentifier().augmentation(FlowCapableStatisticsGatheringStatus.class);
 602
 603         final SimpleDateFormat simpleDateFormat = new SimpleDateFormat(DATE_AND_TIME_FORMAT);
 604         final FlowCapableStatisticsGatheringStatus gatheringStatus = new FlowCapableStatisticsGatheringStatusBuilder()
 605                 .setSnapshotGatheringStatusStart(new SnapshotGatheringStatusStartBuilder()
 606                         .setBegin(new DateAndTime(simpleDateFormat.format(new Date())))
 607                         .build())
 608                 .setSnapshotGatheringStatusEnd(null) // TODO: reconsider if really need to clean end mark here
 609                 .build();
 610         try {
 611             deviceContext.writeToTransaction(LogicalDatastoreType.OPERATIONAL, statusPath, gatheringStatus);
 612         } catch (final TransactionChainClosedException e) {
 613             LOG.warn("Can't write to transaction, transaction chain probably closed.");
 614             LOG.trace("Write to transaction exception: ", e);
 615         }
 616
 617         deviceContext.submitTransaction();
 618     }
 619
 620     /**
 621      * Writes snapshot gathering end timestamp + outcome.
 622      *
 623      * @param deviceContext txManager + node path keeper
 624      * @param succeeded     outcome of currently finished gathering
 625      */
 626     static void markDeviceStateSnapshotEnd(final DeviceContext deviceContext, final boolean succeeded) {
 627         final InstanceIdentifier<SnapshotGatheringStatusEnd> statusEndPath = deviceContext.getDeviceInfo()
 628                 .getNodeInstanceIdentifier().augmentation(FlowCapableStatisticsGatheringStatus.class)
 629                 .child(SnapshotGatheringStatusEnd.class);
 630
 631         final SimpleDateFormat simpleDateFormat = new SimpleDateFormat(DATE_AND_TIME_FORMAT);
 632         final SnapshotGatheringStatusEnd gatheringStatus = new SnapshotGatheringStatusEndBuilder()
 633                 .setEnd(new DateAndTime(simpleDateFormat.format(new Date())))
 634                 .setSucceeded(succeeded)
 635                 .build();
 636         try {
 637             deviceContext.writeToTransaction(LogicalDatastoreType.OPERATIONAL, statusEndPath, gatheringStatus);
 638         } catch (TransactionChainClosedException e) {
 639             LOG.warn("Can't write to transaction, transaction chain probably closed.");
 640             LOG.trace("Write to transaction exception: ", e);
 641         }
 642
 643         deviceContext.submitTransaction();
 644     }
 645 }