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