openflowplugin/src/main/java/org/opendaylight/openflowplugin/openflow/md/core/MDController.java

   1 /**
   2  * Copyright (c) 2013 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.openflow.md.core;
  10
  11 import java.util.ArrayList;
  12 import java.util.Collection;
  13 import java.util.LinkedHashSet;
  14 import java.util.List;
  15 import java.util.Map;
  16 import java.util.concurrent.BlockingQueue;
  17 import java.util.concurrent.ConcurrentHashMap;
  18 import java.util.concurrent.ConcurrentMap;
  19 import java.util.concurrent.ExecutionException;
  20 import java.util.concurrent.Future;
  21 import java.util.concurrent.LinkedBlockingQueue;
  22 import java.util.concurrent.RejectedExecutionException;
  23 import java.util.concurrent.RejectedExecutionHandler;
  24 import java.util.concurrent.ThreadPoolExecutor;
  25 import java.util.concurrent.TimeUnit;
  26 import java.util.concurrent.TimeoutException;
  27
  28 import org.opendaylight.openflowjava.protocol.spi.connection.SwitchConnectionProvider;
  29 import org.opendaylight.openflowplugin.api.OFConstants;
  30 import org.opendaylight.openflowplugin.api.openflow.md.core.IMDMessageTranslator;
  31 import org.opendaylight.openflowplugin.api.openflow.md.core.NotificationQueueWrapper;
  32 import org.opendaylight.openflowplugin.api.openflow.md.core.TranslatorKey;
  33 import org.opendaylight.openflowplugin.extension.api.core.extension.ExtensionConverterProvider;
  34 import org.opendaylight.openflowplugin.openflow.md.core.session.OFSessionUtil;
  35 import org.opendaylight.openflowplugin.openflow.md.core.translator.ErrorTranslator;
  36 import org.opendaylight.openflowplugin.openflow.md.core.translator.ErrorV10Translator;
  37 import org.opendaylight.openflowplugin.openflow.md.core.translator.ExperimenterTranslator;
  38 import org.opendaylight.openflowplugin.openflow.md.core.translator.FeaturesV10ToNodeConnectorUpdatedTranslator;
  39 import org.opendaylight.openflowplugin.openflow.md.core.translator.FlowRemovedTranslator;
  40 import org.opendaylight.openflowplugin.openflow.md.core.translator.MultiPartMessageDescToNodeUpdatedTranslator;
  41 import org.opendaylight.openflowplugin.openflow.md.core.translator.MultiPartReplyPortToNodeConnectorUpdatedTranslator;
  42 import org.opendaylight.openflowplugin.openflow.md.core.translator.MultipartReplyTableFeaturesToTableUpdatedTranslator;
  43 import org.opendaylight.openflowplugin.openflow.md.core.translator.MultipartReplyTranslator;
  44 import org.opendaylight.openflowplugin.openflow.md.core.translator.NotificationPlainTranslator;
  45 import org.opendaylight.openflowplugin.openflow.md.core.translator.PacketInTranslator;
  46 import org.opendaylight.openflowplugin.openflow.md.core.translator.PacketInV10Translator;
  47 import org.opendaylight.openflowplugin.openflow.md.core.translator.PortStatusMessageToNodeConnectorUpdatedTranslator;
  48 import org.opendaylight.openflowplugin.openflow.md.lldp.LLDPSpeakerPopListener;
  49 import org.opendaylight.openflowplugin.api.openflow.md.queue.PopListener;
  50 import org.opendaylight.openflowplugin.openflow.md.util.OpenflowPortsUtil;
  51 import org.opendaylight.openflowplugin.api.statistics.MessageSpy;
  52 import org.opendaylight.yang.gen.v1.urn.opendaylight.flow.service.rev130819.NodeErrorNotification;
  53 import org.opendaylight.yang.gen.v1.urn.opendaylight.flow.service.rev130819.SwitchFlowRemoved;
  54 import org.opendaylight.yang.gen.v1.urn.opendaylight.flow.statistics.rev130819.AggregateFlowStatisticsUpdate;
  55 import org.opendaylight.yang.gen.v1.urn.opendaylight.flow.statistics.rev130819.FlowsStatisticsUpdate;
  56 import org.opendaylight.yang.gen.v1.urn.opendaylight.flow.table.statistics.rev131215.FlowTableStatisticsUpdate;
  57 import org.opendaylight.yang.gen.v1.urn.opendaylight.group.statistics.rev131111.GroupDescStatsUpdated;
  58 import org.opendaylight.yang.gen.v1.urn.opendaylight.group.statistics.rev131111.GroupFeaturesUpdated;
  59 import org.opendaylight.yang.gen.v1.urn.opendaylight.group.statistics.rev131111.GroupStatisticsUpdated;
  60 import org.opendaylight.yang.gen.v1.urn.opendaylight.inventory.rev130819.NodeConnectorUpdated;
  61 import org.opendaylight.yang.gen.v1.urn.opendaylight.inventory.rev130819.NodeRemoved;
  62 import org.opendaylight.yang.gen.v1.urn.opendaylight.inventory.rev130819.NodeUpdated;
  63 import org.opendaylight.yang.gen.v1.urn.opendaylight.meter.statistics.rev131111.MeterConfigStatsUpdated;
  64 import org.opendaylight.yang.gen.v1.urn.opendaylight.meter.statistics.rev131111.MeterFeaturesUpdated;
  65 import org.opendaylight.yang.gen.v1.urn.opendaylight.meter.statistics.rev131111.MeterStatisticsUpdated;
  66 import org.opendaylight.yang.gen.v1.urn.opendaylight.node.error.service.rev140410.BadActionErrorNotification;
  67 import org.opendaylight.yang.gen.v1.urn.opendaylight.node.error.service.rev140410.BadInstructionErrorNotification;
  68 import org.opendaylight.yang.gen.v1.urn.opendaylight.node.error.service.rev140410.BadMatchErrorNotification;
  69 import org.opendaylight.yang.gen.v1.urn.opendaylight.node.error.service.rev140410.BadRequestErrorNotification;
  70 import org.opendaylight.yang.gen.v1.urn.opendaylight.node.error.service.rev140410.ExperimenterErrorNotification;
  71 import org.opendaylight.yang.gen.v1.urn.opendaylight.node.error.service.rev140410.FlowModErrorNotification;
  72 import org.opendaylight.yang.gen.v1.urn.opendaylight.node.error.service.rev140410.GroupModErrorNotification;
  73 import org.opendaylight.yang.gen.v1.urn.opendaylight.node.error.service.rev140410.HelloFailedErrorNotification;
  74 import org.opendaylight.yang.gen.v1.urn.opendaylight.node.error.service.rev140410.MeterModErrorNotification;
  75 import org.opendaylight.yang.gen.v1.urn.opendaylight.node.error.service.rev140410.PortModErrorNotification;
  76 import org.opendaylight.yang.gen.v1.urn.opendaylight.node.error.service.rev140410.QueueOpErrorNotification;
  77 import org.opendaylight.yang.gen.v1.urn.opendaylight.node.error.service.rev140410.RoleRequestErrorNotification;
  78 import org.opendaylight.yang.gen.v1.urn.opendaylight.node.error.service.rev140410.SwitchConfigErrorNotification;
  79 import org.opendaylight.yang.gen.v1.urn.opendaylight.node.error.service.rev140410.TableFeaturesErrorNotification;
  80 import org.opendaylight.yang.gen.v1.urn.opendaylight.node.error.service.rev140410.TableModErrorNotification;
  81 import org.opendaylight.yang.gen.v1.urn.opendaylight.openflow.protocol.rev130731.ErrorMessage;
  82 import org.opendaylight.yang.gen.v1.urn.opendaylight.openflow.protocol.rev130731.ExperimenterMessage;
  83 import org.opendaylight.yang.gen.v1.urn.opendaylight.openflow.protocol.rev130731.FlowRemovedMessage;
  84 import org.opendaylight.yang.gen.v1.urn.opendaylight.openflow.protocol.rev130731.GetFeaturesOutput;
  85 import org.opendaylight.yang.gen.v1.urn.opendaylight.openflow.protocol.rev130731.MultipartReplyMessage;
  86 import org.opendaylight.yang.gen.v1.urn.opendaylight.openflow.protocol.rev130731.OfHeader;
  87 import org.opendaylight.yang.gen.v1.urn.opendaylight.openflow.protocol.rev130731.PacketInMessage;
  88 import org.opendaylight.yang.gen.v1.urn.opendaylight.openflow.protocol.rev130731.PortStatusMessage;
  89 import org.opendaylight.yang.gen.v1.urn.opendaylight.packet.service.rev130709.PacketReceived;
  90 import org.opendaylight.yang.gen.v1.urn.opendaylight.packet.service.rev130709.TransmitPacketInput;
  91 import org.opendaylight.yang.gen.v1.urn.opendaylight.port.statistics.rev131214.NodeConnectorStatisticsUpdate;
  92 import org.opendaylight.yang.gen.v1.urn.opendaylight.queue.statistics.rev131216.QueueStatisticsUpdate;
  93 import org.opendaylight.yang.gen.v1.urn.opendaylight.table.service.rev131026.TableUpdated;
  94 import org.opendaylight.yangtools.yang.binding.DataContainer;
  95 import org.opendaylight.yangtools.yang.binding.DataObject;
  96 import org.slf4j.Logger;
  97 import org.slf4j.LoggerFactory;
  98
  99 import com.google.common.util.concurrent.ForwardingBlockingQueue;
 100 import com.google.common.util.concurrent.Futures;
 101 import com.google.common.util.concurrent.ListenableFuture;
 102 import com.google.common.util.concurrent.ListeningExecutorService;
 103 import com.google.common.util.concurrent.MoreExecutors;
 104
 105 /**
 106  *
 107  */
 108 public class MDController implements IMDController, AutoCloseable {
 109
 110     private static final Logger LOG = LoggerFactory.getLogger(MDController.class);
 111
 112     private Collection<SwitchConnectionProvider> switchConnectionProviders;
 113
 114     private ConcurrentMap<TranslatorKey, Collection<IMDMessageTranslator<OfHeader, List<DataObject>>>> messageTranslators;
 115     private Map<Class<? extends DataObject>, Collection<PopListener<DataObject>>> popListeners;
 116     private MessageSpy<DataContainer> messageSpyCounter;
 117
 118     final private int OF10 = OFConstants.OFP_VERSION_1_0;
 119     final private int OF13 = OFConstants.OFP_VERSION_1_3;
 120
 121     private ErrorHandlerSimpleImpl errorHandler;
 122
 123     private ExtensionConverterProvider extensionConverterProvider;
 124
 125     /**
 126      * @return translator mapping
 127      */
 128     public Map<TranslatorKey, Collection<IMDMessageTranslator<OfHeader, List<DataObject>>>> getMessageTranslators() {
 129         return messageTranslators;
 130     }
 131
 132     /**
 133      * provisioning of translator mapping
 134      */
 135     public void init() {
 136         LOG.debug("init");
 137
 138         OpenflowPortsUtil.init();
 139
 140         messageTranslators = new ConcurrentHashMap<>();
 141         popListeners = new ConcurrentHashMap<>();
 142         //TODO: move registration to factory
 143         addMessageTranslator(ErrorMessage.class, OF10, new ErrorV10Translator());
 144         addMessageTranslator(ErrorMessage.class, OF13, new ErrorTranslator());
 145         addMessageTranslator(FlowRemovedMessage.class, OF10, new FlowRemovedTranslator());
 146         addMessageTranslator(FlowRemovedMessage.class, OF13, new FlowRemovedTranslator());
 147         addMessageTranslator(PacketInMessage.class,OF10, new PacketInV10Translator());
 148         addMessageTranslator(PacketInMessage.class,OF13, new PacketInTranslator());
 149         addMessageTranslator(PortStatusMessage.class,OF10, new PortStatusMessageToNodeConnectorUpdatedTranslator());
 150         addMessageTranslator(PortStatusMessage.class,OF13, new PortStatusMessageToNodeConnectorUpdatedTranslator());
 151         addMessageTranslator(MultipartReplyMessage.class,OF13,new MultiPartReplyPortToNodeConnectorUpdatedTranslator());
 152         addMessageTranslator(MultipartReplyMessage.class,OF10, new MultiPartMessageDescToNodeUpdatedTranslator());
 153         addMessageTranslator(MultipartReplyMessage.class,OF13, new MultiPartMessageDescToNodeUpdatedTranslator());
 154         addMessageTranslator(ExperimenterMessage.class, OF10, new ExperimenterTranslator());
 155         addMessageTranslator(MultipartReplyMessage.class,OF10, new MultipartReplyTranslator());
 156         addMessageTranslator(MultipartReplyMessage.class,OF13, new MultipartReplyTranslator());
 157         addMessageTranslator(MultipartReplyMessage.class,OF13,new MultipartReplyTableFeaturesToTableUpdatedTranslator());
 158         addMessageTranslator(GetFeaturesOutput.class,OF10, new FeaturesV10ToNodeConnectorUpdatedTranslator());
 159         addMessageTranslator(NotificationQueueWrapper.class, OF10, new NotificationPlainTranslator());
 160         addMessageTranslator(NotificationQueueWrapper.class, OF13, new NotificationPlainTranslator());
 161
 162         NotificationPopListener<DataObject> notificationPopListener = new NotificationPopListener<DataObject>();
 163         notificationPopListener.setNotificationProviderService(
 164                 OFSessionUtil.getSessionManager().getNotificationProviderService());
 165         notificationPopListener.setMessageSpy(messageSpyCounter);
 166
 167         //TODO: move registration to factory
 168         addMessagePopListener(NodeErrorNotification.class, notificationPopListener);
 169         addMessagePopListener(BadActionErrorNotification.class, notificationPopListener);
 170         addMessagePopListener(BadInstructionErrorNotification.class, notificationPopListener);
 171         addMessagePopListener(BadMatchErrorNotification.class, notificationPopListener);
 172         addMessagePopListener(BadRequestErrorNotification.class, notificationPopListener);
 173         addMessagePopListener(ExperimenterErrorNotification.class, notificationPopListener);
 174         addMessagePopListener(FlowModErrorNotification.class, notificationPopListener);
 175         addMessagePopListener(GroupModErrorNotification.class, notificationPopListener);
 176         addMessagePopListener(HelloFailedErrorNotification.class, notificationPopListener);
 177         addMessagePopListener(MeterModErrorNotification.class, notificationPopListener);
 178         addMessagePopListener(PortModErrorNotification.class, notificationPopListener);
 179         addMessagePopListener(QueueOpErrorNotification.class, notificationPopListener);
 180         addMessagePopListener(RoleRequestErrorNotification.class, notificationPopListener);
 181         addMessagePopListener(SwitchConfigErrorNotification.class, notificationPopListener);
 182         addMessagePopListener(TableFeaturesErrorNotification.class, notificationPopListener);
 183         addMessagePopListener(TableModErrorNotification.class, notificationPopListener);
 184         addMessagePopListener(NodeConnectorUpdated.class,notificationPopListener);
 185         addMessagePopListener(PacketReceived.class,notificationPopListener);
 186         addMessagePopListener(TransmitPacketInput.class, notificationPopListener);
 187         addMessagePopListener(NodeUpdated.class, notificationPopListener);
 188         addMessagePopListener(NodeRemoved.class, notificationPopListener);
 189
 190         addMessagePopListener(SwitchFlowRemoved.class, notificationPopListener);
 191         addMessagePopListener(TableUpdated.class, notificationPopListener);
 192
 193         //Notification registration for flow statistics
 194         addMessagePopListener(FlowsStatisticsUpdate.class, notificationPopListener);
 195         addMessagePopListener(AggregateFlowStatisticsUpdate.class, notificationPopListener);
 196
 197         //Notification registrations for group-statistics
 198         addMessagePopListener(GroupStatisticsUpdated.class, notificationPopListener);
 199         addMessagePopListener(GroupFeaturesUpdated.class, notificationPopListener);
 200         addMessagePopListener(GroupDescStatsUpdated.class, notificationPopListener);
 201
 202         //Notification registrations for meter-statistics
 203         addMessagePopListener(MeterStatisticsUpdated.class, notificationPopListener);
 204         addMessagePopListener(MeterConfigStatsUpdated.class, notificationPopListener);
 205         addMessagePopListener(MeterFeaturesUpdated.class, notificationPopListener);
 206
 207         //Notification registration for port-statistics
 208         addMessagePopListener(NodeConnectorStatisticsUpdate.class, notificationPopListener);
 209
 210         //Notification registration for flow-table statistics
 211         addMessagePopListener(FlowTableStatisticsUpdate.class, notificationPopListener);
 212
 213         //Notification registration for queue-statistics
 214         addMessagePopListener(QueueStatisticsUpdate.class, notificationPopListener);
 215
 216         //Notification for LLDPSpeaker
 217         LLDPSpeakerPopListener<DataObject> lldpPopListener  = new LLDPSpeakerPopListener<DataObject>();
 218         addMessagePopListener(NodeConnectorUpdated.class,lldpPopListener);
 219
 220         // Push the updated Listeners to Session Manager which will be then picked up by ConnectionConductor eventually
 221         OFSessionUtil.getSessionManager().setTranslatorMapping(messageTranslators);
 222         OFSessionUtil.getSessionManager().setPopListenerMapping(popListeners);
 223         OFSessionUtil.getSessionManager().setMessageSpy(messageSpyCounter);
 224
 225         // prepare worker pool for rpc
 226         // TODO: get size from configSubsystem
 227         int rpcThreadLimit = 10;
 228         ListeningExecutorService rpcPoolDelegator = createRpcPoolSpyDecorated(rpcThreadLimit, messageSpyCounter);
 229         OFSessionUtil.getSessionManager().setRpcPool(rpcPoolDelegator);
 230         OFSessionUtil.getSessionManager().setExtensionConverterProvider(extensionConverterProvider);
 231
 232     }
 233
 234     /**
 235      * @param rpcThreadLimit
 236      * @param messageSpy
 237      * @return
 238      */
 239     private static ListeningExecutorService createRpcPoolSpyDecorated(final int rpcThreadLimit, final MessageSpy<DataContainer> messageSpy) {
 240         final BlockingQueue<Runnable> delegate = new LinkedBlockingQueue<>(100000);
 241         final BlockingQueue<Runnable> queue = new ForwardingBlockingQueue<Runnable>() {
 242             @Override
 243             protected BlockingQueue<Runnable> delegate() {
 244                 return delegate;
 245             }
 246
 247             @Override
 248             public boolean offer(final Runnable r) {
 249                 // ThreadPoolExecutor will spawn a new thread after core size is reached only
 250                 // if the queue.offer returns false.
 251                 return false;
 252             }
 253         };
 254
 255         ThreadPoolLoggingExecutor rpcPool = new ThreadPoolLoggingExecutor(rpcThreadLimit, rpcThreadLimit, 0L,
 256                 TimeUnit.MILLISECONDS, queue, "OFRpc");
 257         rpcPool.setRejectedExecutionHandler(new RejectedExecutionHandler() {
 258                         @Override
 259                         public void rejectedExecution(final Runnable r, final ThreadPoolExecutor executor) {
 260                                 try {
 261                                         executor.getQueue().put(r);
 262                                 } catch (InterruptedException e) {
 263                                         throw new RejectedExecutionException("Interrupted while waiting on queue", e);
 264                                 }
 265
 266                         }
 267                 });
 268         ListeningExecutorService listeningRpcPool = MoreExecutors.listeningDecorator(rpcPool);
 269         RpcListeningExecutorService rpcPoolDecorated = new RpcListeningExecutorService(listeningRpcPool);
 270         rpcPoolDecorated.setMessageSpy(messageSpy);
 271         return rpcPoolDecorated;
 272     }
 273
 274     /**
 275      * @param switchConnectionProviders
 276      *            the switchConnectionProviders to set
 277      */
 278     public void setSwitchConnectionProviders(final Collection<SwitchConnectionProvider> switchConnectionProviders) {
 279         this.switchConnectionProviders = switchConnectionProviders;
 280     }
 281
 282     /**
 283      * Function called by dependency manager after "init ()" is called and after
 284      * the services provided by the class are registered in the service registry
 285      *
 286      */
 287     public void start() {
 288         LOG.debug("starting ..");
 289         LOG.debug("switchConnectionProvider: " + switchConnectionProviders);
 290         // setup handler
 291         SwitchConnectionHandlerImpl switchConnectionHandler = new SwitchConnectionHandlerImpl();
 292         switchConnectionHandler.setMessageSpy(messageSpyCounter);
 293
 294         errorHandler = new ErrorHandlerSimpleImpl();
 295
 296         switchConnectionHandler.setErrorHandler(errorHandler);
 297         switchConnectionHandler.init();
 298
 299         List<ListenableFuture<Boolean>> starterChain = new ArrayList<>(switchConnectionProviders.size());
 300         for (SwitchConnectionProvider switchConnectionPrv : switchConnectionProviders) {
 301             switchConnectionPrv.setSwitchConnectionHandler(switchConnectionHandler);
 302             ListenableFuture<Boolean> isOnlineFuture = switchConnectionPrv.startup();
 303             starterChain.add(isOnlineFuture);
 304         }
 305
 306         Future<List<Boolean>> srvStarted = Futures.allAsList(starterChain);
 307     }
 308
 309     /**
 310      * Function called by the dependency manager before the services exported by
 311      * the component are unregistered, this will be followed by a "destroy ()"
 312      * calls
 313      *
 314      */
 315     public void stop() {
 316         LOG.debug("stopping");
 317         List<ListenableFuture<Boolean>> stopChain = new ArrayList<>(switchConnectionProviders.size());
 318         try {
 319             for (SwitchConnectionProvider switchConnectionPrv : switchConnectionProviders) {
 320                 ListenableFuture<Boolean> shutdown =  switchConnectionPrv.shutdown();
 321                 stopChain.add(shutdown);
 322             }
 323             Futures.allAsList(stopChain).get(5000, TimeUnit.MILLISECONDS);
 324         } catch (InterruptedException | ExecutionException | TimeoutException e) {
 325             LOG.error(e.getMessage(), e);
 326         }
 327         close();
 328     }
 329
 330     /**
 331      * Function called by the dependency manager when at least one dependency
 332      * become unsatisfied or when the component is shutting down because for
 333      * example bundle is being stopped.
 334      *
 335      */
 336     public void destroy() {
 337         close();
 338     }
 339
 340     @Override
 341     public void addMessageTranslator(final Class<? extends DataObject> messageType, final int version, final IMDMessageTranslator<OfHeader, List<DataObject>> translator) {
 342         TranslatorKey tKey = new TranslatorKey(version, messageType.getName());
 343
 344         Collection<IMDMessageTranslator<OfHeader, List<DataObject>>> existingValues = messageTranslators.get(tKey);
 345         if (existingValues == null) {
 346             existingValues = new LinkedHashSet<>();
 347             messageTranslators.put(tKey, existingValues);
 348         }
 349         existingValues.add(translator);
 350         LOG.debug("{} is now translated by {}", messageType, translator);
 351     }
 352
 353     @Override
 354     public void removeMessageTranslator(final Class<? extends DataObject> messageType, final int version, final IMDMessageTranslator<OfHeader, List<DataObject>> translator) {
 355         TranslatorKey tKey = new TranslatorKey(version, messageType.getName());
 356         Collection<IMDMessageTranslator<OfHeader, List<DataObject>>> values = messageTranslators.get(tKey);
 357         if (values != null) {
 358             values.remove(translator);
 359             if (values.isEmpty()) {
 360                 messageTranslators.remove(tKey);
 361             }
 362             LOG.debug("{} is now removed from translators", translator);
 363          }
 364     }
 365
 366     @Override
 367     public void addMessagePopListener(final Class<? extends DataObject> messageType, final PopListener<DataObject> popListener) {
 368         Collection<PopListener<DataObject>> existingValues = popListeners.get(messageType);
 369         if (existingValues == null) {
 370             existingValues = new LinkedHashSet<>();
 371             popListeners.put(messageType, existingValues);
 372         }
 373         existingValues.add(popListener);
 374         LOG.debug("{} is now popListened by {}", messageType, popListener);
 375     }
 376
 377     @Override
 378     public void removeMessagePopListener(final Class<? extends DataObject> messageType, final PopListener<DataObject> popListener) {
 379         Collection<PopListener<DataObject>> values = popListeners.get(messageType);
 380         if (values != null) {
 381             values.remove(popListener);
 382             if (values.isEmpty()) {
 383                 popListeners.remove(messageType);
 384             }
 385             LOG.debug("{} is now removed from popListeners", popListener);
 386          }
 387     }
 388
 389     /**
 390      * @param messageSpyCounter the messageSpyCounter to set
 391      */
 392     public void setMessageSpyCounter(
 393             final MessageSpy<DataContainer> messageSpyCounter) {
 394         this.messageSpyCounter = messageSpyCounter;
 395     }
 396
 397     @Override
 398     public void close() {
 399         LOG.debug("close");
 400         messageSpyCounter = null;
 401         messageTranslators = null;
 402         popListeners = null;
 403         for (SwitchConnectionProvider switchConnectionPrv : switchConnectionProviders) {
 404             switchConnectionPrv.setSwitchConnectionHandler(null);
 405         }
 406         switchConnectionProviders = null;
 407         OpenflowPortsUtil.close();
 408         OFSessionUtil.releaseSessionManager();
 409         errorHandler = null;
 410     }
 411
 412     /**
 413      * @param extensionConverterProvider
 414      */
 415     public void setExtensionConverterProvider(ExtensionConverterProvider extensionConverterProvider) {
 416         this.extensionConverterProvider = extensionConverterProvider;
 417     }
 418 }