opendaylight/md-sal/statistics-manager/src/main/java/org/opendaylight/controller/md/statistics/manager/StatisticsProvider.java

   1 /*
   2  * Copyright IBM Corporation, 2013.  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 package org.opendaylight.controller.md.statistics.manager;
   9
  10 import java.util.Collection;
  11 import java.util.concurrent.ConcurrentHashMap;
  12 import java.util.concurrent.ConcurrentMap;
  13 import java.util.concurrent.ExecutionException;
  14 import java.util.concurrent.Future;
  15
  16 import org.opendaylight.controller.md.statistics.manager.MultipartMessageManager.StatsRequestType;
  17 import org.opendaylight.controller.sal.binding.api.NotificationProviderService;
  18 import org.opendaylight.controller.sal.binding.api.RpcConsumerRegistry;
  19 import org.opendaylight.controller.sal.binding.api.data.DataBrokerService;
  20 import org.opendaylight.controller.sal.binding.api.data.DataChangeListener;
  21 import org.opendaylight.controller.sal.binding.api.data.DataModificationTransaction;
  22 import org.opendaylight.controller.sal.binding.api.data.DataProviderService;
  23 import org.opendaylight.yang.gen.v1.urn.opendaylight.flow.inventory.rev130819.FlowCapableNode;
  24 import org.opendaylight.yang.gen.v1.urn.opendaylight.flow.inventory.rev130819.FlowCapableNodeConnector;
  25 import org.opendaylight.yang.gen.v1.urn.opendaylight.flow.inventory.rev130819.meters.Meter;
  26 import org.opendaylight.yang.gen.v1.urn.opendaylight.flow.inventory.rev130819.tables.Table;
  27 import org.opendaylight.yang.gen.v1.urn.opendaylight.flow.inventory.rev130819.tables.TableKey;
  28 import org.opendaylight.yang.gen.v1.urn.opendaylight.flow.inventory.rev130819.tables.table.Flow;
  29 import org.opendaylight.yang.gen.v1.urn.opendaylight.flow.statistics.rev130819.GetAggregateFlowStatisticsFromFlowTableForAllFlowsInputBuilder;
  30 import org.opendaylight.yang.gen.v1.urn.opendaylight.flow.statistics.rev130819.GetAggregateFlowStatisticsFromFlowTableForAllFlowsOutput;
  31 import org.opendaylight.yang.gen.v1.urn.opendaylight.flow.statistics.rev130819.GetAllFlowsStatisticsFromAllFlowTablesInputBuilder;
  32 import org.opendaylight.yang.gen.v1.urn.opendaylight.flow.statistics.rev130819.GetAllFlowsStatisticsFromAllFlowTablesOutput;
  33 import org.opendaylight.yang.gen.v1.urn.opendaylight.flow.statistics.rev130819.GetFlowStatisticsFromFlowTableInputBuilder;
  34 import org.opendaylight.yang.gen.v1.urn.opendaylight.flow.statistics.rev130819.GetFlowStatisticsFromFlowTableOutput;
  35 import org.opendaylight.yang.gen.v1.urn.opendaylight.flow.statistics.rev130819.OpendaylightFlowStatisticsService;
  36 import org.opendaylight.yang.gen.v1.urn.opendaylight.flow.table.statistics.rev131215.GetFlowTablesStatisticsInputBuilder;
  37 import org.opendaylight.yang.gen.v1.urn.opendaylight.flow.table.statistics.rev131215.GetFlowTablesStatisticsOutput;
  38 import org.opendaylight.yang.gen.v1.urn.opendaylight.flow.table.statistics.rev131215.OpendaylightFlowTableStatisticsService;
  39 import org.opendaylight.yang.gen.v1.urn.opendaylight.flow.types.port.rev130925.queues.Queue;
  40 import org.opendaylight.yang.gen.v1.urn.opendaylight.flow.types.queue.rev130925.QueueId;
  41 import org.opendaylight.yang.gen.v1.urn.opendaylight.group.statistics.rev131111.GetAllGroupStatisticsInputBuilder;
  42 import org.opendaylight.yang.gen.v1.urn.opendaylight.group.statistics.rev131111.GetAllGroupStatisticsOutput;
  43 import org.opendaylight.yang.gen.v1.urn.opendaylight.group.statistics.rev131111.GetGroupDescriptionInputBuilder;
  44 import org.opendaylight.yang.gen.v1.urn.opendaylight.group.statistics.rev131111.GetGroupDescriptionOutput;
  45 import org.opendaylight.yang.gen.v1.urn.opendaylight.group.statistics.rev131111.OpendaylightGroupStatisticsService;
  46 import org.opendaylight.yang.gen.v1.urn.opendaylight.group.types.rev131018.groups.Group;
  47 import org.opendaylight.yang.gen.v1.urn.opendaylight.inventory.rev130819.NodeConnectorId;
  48 import org.opendaylight.yang.gen.v1.urn.opendaylight.inventory.rev130819.NodeId;
  49 import org.opendaylight.yang.gen.v1.urn.opendaylight.inventory.rev130819.NodeRef;
  50 import org.opendaylight.yang.gen.v1.urn.opendaylight.inventory.rev130819.Nodes;
  51 import org.opendaylight.yang.gen.v1.urn.opendaylight.inventory.rev130819.node.NodeConnector;
  52 import org.opendaylight.yang.gen.v1.urn.opendaylight.inventory.rev130819.nodes.Node;
  53 import org.opendaylight.yang.gen.v1.urn.opendaylight.inventory.rev130819.nodes.NodeKey;
  54 import org.opendaylight.yang.gen.v1.urn.opendaylight.meter.statistics.rev131111.GetAllMeterConfigStatisticsInputBuilder;
  55 import org.opendaylight.yang.gen.v1.urn.opendaylight.meter.statistics.rev131111.GetAllMeterConfigStatisticsOutput;
  56 import org.opendaylight.yang.gen.v1.urn.opendaylight.meter.statistics.rev131111.GetAllMeterStatisticsInputBuilder;
  57 import org.opendaylight.yang.gen.v1.urn.opendaylight.meter.statistics.rev131111.GetAllMeterStatisticsOutput;
  58 import org.opendaylight.yang.gen.v1.urn.opendaylight.meter.statistics.rev131111.OpendaylightMeterStatisticsService;
  59 import org.opendaylight.yang.gen.v1.urn.opendaylight.port.statistics.rev131214.GetAllNodeConnectorsStatisticsInputBuilder;
  60 import org.opendaylight.yang.gen.v1.urn.opendaylight.port.statistics.rev131214.GetAllNodeConnectorsStatisticsOutput;
  61 import org.opendaylight.yang.gen.v1.urn.opendaylight.port.statistics.rev131214.OpendaylightPortStatisticsService;
  62 import org.opendaylight.yang.gen.v1.urn.opendaylight.queue.statistics.rev131216.GetAllQueuesStatisticsFromAllPortsInputBuilder;
  63 import org.opendaylight.yang.gen.v1.urn.opendaylight.queue.statistics.rev131216.GetAllQueuesStatisticsFromAllPortsOutput;
  64 import org.opendaylight.yang.gen.v1.urn.opendaylight.queue.statistics.rev131216.GetQueueStatisticsFromGivenPortInputBuilder;
  65 import org.opendaylight.yang.gen.v1.urn.opendaylight.queue.statistics.rev131216.GetQueueStatisticsFromGivenPortOutput;
  66 import org.opendaylight.yang.gen.v1.urn.opendaylight.queue.statistics.rev131216.OpendaylightQueueStatisticsService;
  67 import org.opendaylight.yangtools.concepts.ListenerRegistration;
  68 import org.opendaylight.yangtools.concepts.Registration;
  69 import org.opendaylight.yangtools.yang.binding.DataObject;
  70 import org.opendaylight.yangtools.yang.binding.InstanceIdentifier;
  71 import org.opendaylight.yangtools.yang.binding.NotificationListener;
  72 import org.opendaylight.yangtools.yang.common.RpcResult;
  73 import org.slf4j.Logger;
  74 import org.slf4j.LoggerFactory;
  75
  76 import com.google.common.base.Preconditions;
  77
  78 /**
  79  * Following are main responsibilities of the class:
  80  * 1) Invoke statistics request thread to send periodic statistics request to all the
  81  * flow capable switch connected to the controller. It sends statistics request for
  82  * Group,Meter,Table,Flow,Queue,Aggregate stats.
  83  *
  84  * 2) Invoke statistics ager thread, to clean up all the stale statistics data from
  85  * operational data store.
  86  *
  87  * @author avishnoi@in.ibm.com
  88  *
  89  */
  90 public class StatisticsProvider implements AutoCloseable {
  91     public static final int STATS_THREAD_EXECUTION_TIME= 15000;
  92
  93     private static final Logger spLogger = LoggerFactory.getLogger(StatisticsProvider.class);
  94
  95     private final MultipartMessageManager multipartMessageManager = new MultipartMessageManager();
  96     private final DataProviderService dps;
  97
  98     //Local caching of stats
  99     private final ConcurrentMap<NodeId, NodeStatisticsHandler> handlers = new ConcurrentHashMap<>();
 100
 101     private OpendaylightGroupStatisticsService groupStatsService;
 102
 103     private OpendaylightMeterStatisticsService meterStatsService;
 104
 105     private OpendaylightFlowStatisticsService flowStatsService;
 106
 107     private OpendaylightPortStatisticsService portStatsService;
 108
 109     private OpendaylightFlowTableStatisticsService flowTableStatsService;
 110
 111     private OpendaylightQueueStatisticsService queueStatsService;
 112
 113     private StatisticsUpdateHandler statsUpdateHandler;
 114
 115     private Thread statisticsRequesterThread;
 116
 117     private Thread statisticsAgerThread;
 118
 119
 120     public StatisticsProvider(final DataProviderService dataService) {
 121         this.dps = Preconditions.checkNotNull(dataService);
 122     }
 123
 124     public MultipartMessageManager getMultipartMessageManager() {
 125         return multipartMessageManager;
 126     }
 127
 128     private final StatisticsListener updateCommiter = new StatisticsListener(StatisticsProvider.this);
 129
 130     private Registration<NotificationListener> listenerRegistration;
 131
 132     private ListenerRegistration<DataChangeListener> flowCapableTrackerRegistration;
 133
 134     public void start(final DataBrokerService dbs, final NotificationProviderService nps, final RpcConsumerRegistry rpcRegistry) {
 135
 136         // Get Group/Meter statistics service instances
 137         groupStatsService = rpcRegistry.getRpcService(OpendaylightGroupStatisticsService.class);
 138         meterStatsService = rpcRegistry.getRpcService(OpendaylightMeterStatisticsService.class);
 139         flowStatsService = rpcRegistry.getRpcService(OpendaylightFlowStatisticsService.class);
 140         portStatsService = rpcRegistry.getRpcService(OpendaylightPortStatisticsService.class);
 141         flowTableStatsService = rpcRegistry.getRpcService(OpendaylightFlowTableStatisticsService.class);
 142         queueStatsService = rpcRegistry.getRpcService(OpendaylightQueueStatisticsService.class);
 143
 144         // Start receiving notifications
 145         this.listenerRegistration = nps.registerNotificationListener(this.updateCommiter);
 146
 147         // Register for switch connect/disconnect notifications
 148         final InstanceIdentifier<FlowCapableNode> fcnId = InstanceIdentifier.builder(Nodes.class)
 149                 .child(Node.class).augmentation(FlowCapableNode.class).build();
 150         this.flowCapableTrackerRegistration = dbs.registerDataChangeListener(fcnId,
 151                 new FlowCapableTracker(this, fcnId));
 152
 153         statsUpdateHandler = new StatisticsUpdateHandler(StatisticsProvider.this);
 154         registerDataStoreUpdateListener(dbs);
 155
 156         statisticsRequesterThread = new Thread( new Runnable(){
 157
 158             @Override
 159             public void run() {
 160                 while(true){
 161                     try {
 162                         statsRequestSender();
 163
 164                         Thread.sleep(STATS_THREAD_EXECUTION_TIME);
 165                     }catch (Exception e){
 166                         spLogger.error("Exception occurred while sending stats request : {}",e);
 167                     }
 168                 }
 169             }
 170         });
 171
 172         spLogger.debug("Statistics requester thread started with timer interval : {}",STATS_THREAD_EXECUTION_TIME);
 173
 174         statisticsRequesterThread.start();
 175
 176         statisticsAgerThread = new Thread( new Runnable(){
 177
 178             @Override
 179             public void run() {
 180                 while(true){
 181                     try {
 182                         for(NodeStatisticsHandler nodeStatisticsAger : handlers.values()){
 183                             nodeStatisticsAger.cleanStaleStatistics();
 184                         }
 185                         multipartMessageManager.cleanStaleTransactionIds();
 186
 187                         Thread.sleep(STATS_THREAD_EXECUTION_TIME);
 188                     }catch (Exception e){
 189                         spLogger.error("Exception occurred while sending stats request : {}",e);
 190                     }
 191                 }
 192             }
 193         });
 194
 195         spLogger.debug("Statistics ager thread started with timer interval : {}",STATS_THREAD_EXECUTION_TIME);
 196
 197         statisticsAgerThread.start();
 198
 199         spLogger.info("Statistics Provider started.");
 200     }
 201
 202     private void registerDataStoreUpdateListener(DataBrokerService dbs) {
 203         // FIXME: the below should be broken out into StatisticsUpdateHandler
 204
 205         //Register for flow updates
 206         InstanceIdentifier<? extends DataObject> pathFlow = InstanceIdentifier.builder(Nodes.class).child(Node.class)
 207                                                                     .augmentation(FlowCapableNode.class)
 208                                                                     .child(Table.class)
 209                                                                     .child(Flow.class).toInstance();
 210         dbs.registerDataChangeListener(pathFlow, statsUpdateHandler);
 211
 212         //Register for meter updates
 213         InstanceIdentifier<? extends DataObject> pathMeter = InstanceIdentifier.builder(Nodes.class).child(Node.class)
 214                                                     .augmentation(FlowCapableNode.class)
 215                                                     .child(Meter.class).toInstance();
 216
 217         dbs.registerDataChangeListener(pathMeter, statsUpdateHandler);
 218
 219         //Register for group updates
 220         InstanceIdentifier<? extends DataObject> pathGroup = InstanceIdentifier.builder(Nodes.class).child(Node.class)
 221                                                     .augmentation(FlowCapableNode.class)
 222                                                     .child(Group.class).toInstance();
 223         dbs.registerDataChangeListener(pathGroup, statsUpdateHandler);
 224
 225         //Register for queue updates
 226         InstanceIdentifier<? extends DataObject> pathQueue = InstanceIdentifier.builder(Nodes.class).child(Node.class)
 227                                                                     .child(NodeConnector.class)
 228                                                                     .augmentation(FlowCapableNodeConnector.class)
 229                                                                     .child(Queue.class).toInstance();
 230         dbs.registerDataChangeListener(pathQueue, statsUpdateHandler);
 231     }
 232
 233     protected DataModificationTransaction startChange() {
 234         return dps.beginTransaction();
 235     }
 236
 237     private void statsRequestSender() {
 238         for (NodeStatisticsHandler h : handlers.values()) {
 239             sendStatisticsRequestsToNode(h);
 240         }
 241     }
 242
 243     private void sendStatisticsRequestsToNode(NodeStatisticsHandler h) {
 244         NodeKey targetNode = h.getTargetNodeKey();
 245         spLogger.debug("Send requests for statistics collection to node : {}", targetNode.getId());
 246
 247         InstanceIdentifier<Node> targetInstanceId = InstanceIdentifier.builder(Nodes.class).child(Node.class, targetNode).build();
 248
 249         NodeRef targetNodeRef = new NodeRef(targetInstanceId);
 250
 251         try{
 252             if(flowTableStatsService != null){
 253                 sendAllFlowTablesStatisticsRequest(targetNodeRef);
 254             }
 255             if(flowStatsService != null){
 256                 // FIXME: it does not make sense to trigger this before sendAllFlowTablesStatisticsRequest()
 257                 //        comes back -- we do not have any tables anyway.
 258                 sendAggregateFlowsStatsFromAllTablesRequest(h);
 259
 260                 sendAllFlowsStatsFromAllTablesRequest(targetNodeRef);
 261             }
 262             if(portStatsService != null){
 263                 sendAllNodeConnectorsStatisticsRequest(targetNodeRef);
 264             }
 265             if(groupStatsService != null){
 266                 sendAllGroupStatisticsRequest(targetNodeRef);
 267                 sendGroupDescriptionRequest(targetNodeRef);
 268             }
 269             if(meterStatsService != null){
 270                 sendAllMeterStatisticsRequest(targetNodeRef);
 271                 sendMeterConfigStatisticsRequest(targetNodeRef);
 272             }
 273             if(queueStatsService != null){
 274                 sendAllQueueStatsFromAllNodeConnector(targetNodeRef);
 275             }
 276         }catch(Exception e){
 277             spLogger.error("Exception occured while sending statistics requests : {}", e);
 278         }
 279     }
 280
 281
 282     private void sendAllFlowTablesStatisticsRequest(NodeRef targetNodeRef) throws InterruptedException, ExecutionException {
 283         final GetFlowTablesStatisticsInputBuilder input =
 284                 new GetFlowTablesStatisticsInputBuilder();
 285
 286         input.setNode(targetNodeRef);
 287
 288         Future<RpcResult<GetFlowTablesStatisticsOutput>> response =
 289                 flowTableStatsService.getFlowTablesStatistics(input.build());
 290
 291         this.multipartMessageManager.addTxIdToRequestTypeEntry(getNodeId(targetNodeRef),response.get().getResult().getTransactionId()
 292                 , StatsRequestType.ALL_FLOW_TABLE);
 293
 294     }
 295
 296     private void sendAllFlowsStatsFromAllTablesRequest(NodeRef targetNode) throws InterruptedException, ExecutionException{
 297         final GetAllFlowsStatisticsFromAllFlowTablesInputBuilder input =
 298                 new GetAllFlowsStatisticsFromAllFlowTablesInputBuilder();
 299
 300         input.setNode(targetNode);
 301
 302         Future<RpcResult<GetAllFlowsStatisticsFromAllFlowTablesOutput>> response =
 303                 flowStatsService.getAllFlowsStatisticsFromAllFlowTables(input.build());
 304
 305         this.multipartMessageManager.addTxIdToRequestTypeEntry(getNodeId(targetNode), response.get().getResult().getTransactionId()
 306                 , StatsRequestType.ALL_FLOW);
 307
 308     }
 309
 310     public void sendFlowStatsFromTableRequest(NodeRef targetNode,Flow flow) throws InterruptedException, ExecutionException{
 311         final GetFlowStatisticsFromFlowTableInputBuilder input =
 312                 new GetFlowStatisticsFromFlowTableInputBuilder();
 313
 314         input.setNode(targetNode);
 315         input.fieldsFrom(flow);
 316
 317         Future<RpcResult<GetFlowStatisticsFromFlowTableOutput>> response =
 318                 flowStatsService.getFlowStatisticsFromFlowTable(input.build());
 319
 320         this.multipartMessageManager.addTxIdToRequestTypeEntry(getNodeId(targetNode), response.get().getResult().getTransactionId()
 321                 , StatsRequestType.ALL_FLOW);
 322
 323     }
 324
 325     private void sendAggregateFlowsStatsFromAllTablesRequest(final NodeStatisticsHandler h) throws InterruptedException, ExecutionException{
 326         final Collection<TableKey> tables = h.getKnownTables();
 327         spLogger.debug("Node {} supports {} table(s)", h, tables.size());
 328
 329         for (TableKey key : h.getKnownTables()) {
 330             sendAggregateFlowsStatsFromTableRequest(h.getTargetNodeKey(), key.getId().shortValue());
 331         }
 332     }
 333
 334     private void sendAggregateFlowsStatsFromTableRequest(NodeKey targetNodeKey,Short tableId) throws InterruptedException, ExecutionException{
 335
 336         spLogger.debug("Send aggregate stats request for flow table {} to node {}",tableId,targetNodeKey);
 337         GetAggregateFlowStatisticsFromFlowTableForAllFlowsInputBuilder input =
 338                 new GetAggregateFlowStatisticsFromFlowTableForAllFlowsInputBuilder();
 339
 340         input.setNode(new NodeRef(InstanceIdentifier.builder(Nodes.class).child(Node.class, targetNodeKey).toInstance()));
 341         input.setTableId(new org.opendaylight.yang.gen.v1.urn.opendaylight.table.types.rev131026.TableId(tableId));
 342         Future<RpcResult<GetAggregateFlowStatisticsFromFlowTableForAllFlowsOutput>> response =
 343                 flowStatsService.getAggregateFlowStatisticsFromFlowTableForAllFlows(input.build());
 344
 345         multipartMessageManager.setTxIdAndTableIdMapEntry(targetNodeKey.getId(), response.get().getResult().getTransactionId(), tableId);
 346         this.multipartMessageManager.addTxIdToRequestTypeEntry(targetNodeKey.getId(), response.get().getResult().getTransactionId()
 347                 , StatsRequestType.AGGR_FLOW);
 348     }
 349
 350     private void sendAllNodeConnectorsStatisticsRequest(NodeRef targetNode) throws InterruptedException, ExecutionException{
 351
 352         final GetAllNodeConnectorsStatisticsInputBuilder input = new GetAllNodeConnectorsStatisticsInputBuilder();
 353
 354         input.setNode(targetNode);
 355
 356         Future<RpcResult<GetAllNodeConnectorsStatisticsOutput>> response =
 357                 portStatsService.getAllNodeConnectorsStatistics(input.build());
 358         this.multipartMessageManager.addTxIdToRequestTypeEntry(getNodeId(targetNode), response.get().getResult().getTransactionId()
 359                 , StatsRequestType.ALL_PORT);
 360
 361     }
 362
 363     private void sendAllGroupStatisticsRequest(NodeRef targetNode) throws InterruptedException, ExecutionException{
 364
 365         final GetAllGroupStatisticsInputBuilder input = new GetAllGroupStatisticsInputBuilder();
 366
 367         input.setNode(targetNode);
 368
 369         Future<RpcResult<GetAllGroupStatisticsOutput>> response =
 370                 groupStatsService.getAllGroupStatistics(input.build());
 371
 372         this.multipartMessageManager.addTxIdToRequestTypeEntry(getNodeId(targetNode), response.get().getResult().getTransactionId()
 373                 , StatsRequestType.ALL_GROUP);
 374
 375     }
 376
 377     public void sendGroupDescriptionRequest(NodeRef targetNode) throws InterruptedException, ExecutionException{
 378         final GetGroupDescriptionInputBuilder input = new GetGroupDescriptionInputBuilder();
 379
 380         input.setNode(targetNode);
 381
 382         Future<RpcResult<GetGroupDescriptionOutput>> response =
 383                 groupStatsService.getGroupDescription(input.build());
 384
 385         this.multipartMessageManager.addTxIdToRequestTypeEntry(getNodeId(targetNode), response.get().getResult().getTransactionId()
 386                 , StatsRequestType.GROUP_DESC);
 387
 388     }
 389
 390     private void sendAllMeterStatisticsRequest(NodeRef targetNode) throws InterruptedException, ExecutionException{
 391
 392         GetAllMeterStatisticsInputBuilder input = new GetAllMeterStatisticsInputBuilder();
 393
 394         input.setNode(targetNode);
 395
 396         Future<RpcResult<GetAllMeterStatisticsOutput>> response =
 397                 meterStatsService.getAllMeterStatistics(input.build());
 398
 399         this.multipartMessageManager.addTxIdToRequestTypeEntry(getNodeId(targetNode), response.get().getResult().getTransactionId()
 400                 , StatsRequestType.ALL_METER);;
 401
 402     }
 403
 404     public void sendMeterConfigStatisticsRequest(NodeRef targetNode) throws InterruptedException, ExecutionException{
 405
 406         GetAllMeterConfigStatisticsInputBuilder input = new GetAllMeterConfigStatisticsInputBuilder();
 407
 408         input.setNode(targetNode);
 409
 410         Future<RpcResult<GetAllMeterConfigStatisticsOutput>> response =
 411                 meterStatsService.getAllMeterConfigStatistics(input.build());
 412
 413         this.multipartMessageManager.addTxIdToRequestTypeEntry(getNodeId(targetNode), response.get().getResult().getTransactionId()
 414                 , StatsRequestType.METER_CONFIG);;
 415
 416     }
 417
 418     private void sendAllQueueStatsFromAllNodeConnector(NodeRef targetNode) throws InterruptedException, ExecutionException {
 419         GetAllQueuesStatisticsFromAllPortsInputBuilder input = new GetAllQueuesStatisticsFromAllPortsInputBuilder();
 420
 421         input.setNode(targetNode);
 422
 423         Future<RpcResult<GetAllQueuesStatisticsFromAllPortsOutput>> response =
 424                 queueStatsService.getAllQueuesStatisticsFromAllPorts(input.build());
 425
 426         this.multipartMessageManager.addTxIdToRequestTypeEntry(getNodeId(targetNode), response.get().getResult().getTransactionId()
 427                 , StatsRequestType.ALL_QUEUE_STATS);;
 428
 429     }
 430
 431     public void sendQueueStatsFromGivenNodeConnector(NodeRef targetNode,NodeConnectorId nodeConnectorId, QueueId queueId) throws InterruptedException, ExecutionException {
 432         GetQueueStatisticsFromGivenPortInputBuilder input = new GetQueueStatisticsFromGivenPortInputBuilder();
 433
 434         input.setNode(targetNode);
 435         input.setNodeConnectorId(nodeConnectorId);
 436         input.setQueueId(queueId);
 437         Future<RpcResult<GetQueueStatisticsFromGivenPortOutput>> response =
 438                 queueStatsService.getQueueStatisticsFromGivenPort(input.build());
 439
 440         this.multipartMessageManager.addTxIdToRequestTypeEntry(getNodeId(targetNode), response.get().getResult().getTransactionId()
 441                 , StatsRequestType.ALL_QUEUE_STATS);;
 442
 443     }
 444
 445     /**
 446      * Get the handler for a particular node.
 447      *
 448      * @param nodeId source node
 449      * @return Node statistics handler for that node. Null if the statistics should
 450      *         not handled.
 451      */
 452     public final NodeStatisticsHandler getStatisticsHandler(final NodeId nodeId) {
 453         Preconditions.checkNotNull(nodeId);
 454         NodeStatisticsHandler handler = handlers.get(nodeId);
 455         if (handler == null) {
 456             spLogger.info("Attempted to get non-existing handler for {}", nodeId);
 457         }
 458         return handler;
 459     }
 460
 461     @SuppressWarnings("unchecked")
 462     private NodeId getNodeId(NodeRef nodeRef){
 463         InstanceIdentifier<Node> nodeII = (InstanceIdentifier<Node>) nodeRef.getValue();
 464         NodeKey nodeKey = InstanceIdentifier.keyOf(nodeII);
 465         return nodeKey.getId();
 466     }
 467
 468     @Override
 469     public void close() {
 470         try {
 471             if (this.listenerRegistration != null) {
 472                 this.listenerRegistration.close();
 473                 this.statisticsRequesterThread.destroy();
 474                 this.statisticsAgerThread.destroy();
 475             }
 476             if (this.flowCapableTrackerRegistration != null) {
 477                 this.flowCapableTrackerRegistration.close();
 478                 this.flowCapableTrackerRegistration = null;
 479             }
 480         } catch (Exception e) {
 481             spLogger.warn("Failed to stop Statistics Provider completely", e);
 482         } finally {
 483             spLogger.info("Statistics Provider stopped.");
 484         }
 485     }
 486
 487     synchronized void startNodeHandlers(final Collection<NodeKey> addedNodes) {
 488         for (NodeKey key : addedNodes) {
 489             if (handlers.containsKey(key.getId())) {
 490                 spLogger.warn("Attempted to start already-existing handler for {}, very strange", key.getId());
 491                 continue;
 492             }
 493
 494             final NodeStatisticsHandler h = new NodeStatisticsHandler(this, key);
 495             handlers.put(key.getId(), h);
 496             spLogger.debug("Started node handler for {}", key.getId());
 497
 498             // FIXME: this should be in the NodeStatisticsHandler itself
 499             sendStatisticsRequestsToNode(h);
 500         }
 501     }
 502
 503     synchronized void stopNodeHandlers(final Collection<NodeKey> removedNodes) {
 504         for (NodeKey key : removedNodes) {
 505             final NodeStatisticsHandler s = handlers.remove(key.getId());
 506             if (s != null) {
 507                 spLogger.debug("Stopping node handler for {}", key.getId());
 508                 s.close();
 509             } else {
 510                 spLogger.warn("Attempted to remove non-existing handler for {}, very strange", key.getId());
 511             }
 512         }
 513     }
 514 }