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.api.openflow.md.queue.PopListener;
  49 import org.opendaylight.openflowplugin.openflow.md.util.OpenflowPortsUtil;
  50 import org.opendaylight.openflowplugin.api.statistics.MessageSpy;
  51 import org.opendaylight.yang.gen.v1.urn.opendaylight.flow.service.rev130819.NodeErrorNotification;
  52 import org.opendaylight.yang.gen.v1.urn.opendaylight.flow.service.rev130819.SwitchFlowRemoved;
  53 import org.opendaylight.yang.gen.v1.urn.opendaylight.flow.statistics.rev130819.AggregateFlowStatisticsUpdate;
  54 import org.opendaylight.yang.gen.v1.urn.opendaylight.flow.statistics.rev130819.FlowsStatisticsUpdate;
  55 import org.opendaylight.yang.gen.v1.urn.opendaylight.flow.table.statistics.rev131215.FlowTableStatisticsUpdate;
  56 import org.opendaylight.yang.gen.v1.urn.opendaylight.group.statistics.rev131111.GroupDescStatsUpdated;
  57 import org.opendaylight.yang.gen.v1.urn.opendaylight.group.statistics.rev131111.GroupFeaturesUpdated;
  58 import org.opendaylight.yang.gen.v1.urn.opendaylight.group.statistics.rev131111.GroupStatisticsUpdated;
  59 import org.opendaylight.yang.gen.v1.urn.opendaylight.inventory.rev130819.NodeConnectorUpdated;
  60 import org.opendaylight.yang.gen.v1.urn.opendaylight.inventory.rev130819.NodeConnectorRemoved;
  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(NodeConnectorRemoved.class,notificationPopListener);
 186         addMessagePopListener(PacketReceived.class,notificationPopListener);
 187         addMessagePopListener(TransmitPacketInput.class, notificationPopListener);
 188         addMessagePopListener(NodeUpdated.class, notificationPopListener);
 189         addMessagePopListener(NodeRemoved.class, notificationPopListener);
 190
 191         addMessagePopListener(SwitchFlowRemoved.class, notificationPopListener);
 192         addMessagePopListener(TableUpdated.class, notificationPopListener);
 193
 194         //Notification registration for flow statistics
 195         addMessagePopListener(FlowsStatisticsUpdate.class, notificationPopListener);
 196         addMessagePopListener(AggregateFlowStatisticsUpdate.class, notificationPopListener);
 197
 198         //Notification registrations for group-statistics
 199         addMessagePopListener(GroupStatisticsUpdated.class, notificationPopListener);
 200         addMessagePopListener(GroupFeaturesUpdated.class, notificationPopListener);
 201         addMessagePopListener(GroupDescStatsUpdated.class, notificationPopListener);
 202
 203         //Notification registrations for meter-statistics
 204         addMessagePopListener(MeterStatisticsUpdated.class, notificationPopListener);
 205         addMessagePopListener(MeterConfigStatsUpdated.class, notificationPopListener);
 206         addMessagePopListener(MeterFeaturesUpdated.class, notificationPopListener);
 207
 208         //Notification registration for port-statistics
 209         addMessagePopListener(NodeConnectorStatisticsUpdate.class, notificationPopListener);
 210
 211         //Notification registration for flow-table statistics
 212         addMessagePopListener(FlowTableStatisticsUpdate.class, notificationPopListener);
 213
 214         //Notification registration for queue-statistics
 215         addMessagePopListener(QueueStatisticsUpdate.class, notificationPopListener);
 216
 217         // Push the updated Listeners to Session Manager which will be then picked up by ConnectionConductor eventually
 218         OFSessionUtil.getSessionManager().setTranslatorMapping(messageTranslators);
 219         OFSessionUtil.getSessionManager().setPopListenerMapping(popListeners);
 220         OFSessionUtil.getSessionManager().setMessageSpy(messageSpyCounter);
 221
 222         // prepare worker pool for rpc
 223         // TODO: get size from configSubsystem
 224         int rpcThreadLimit = 10;
 225         ListeningExecutorService rpcPoolDelegator = createRpcPoolSpyDecorated(rpcThreadLimit, messageSpyCounter);
 226         OFSessionUtil.getSessionManager().setRpcPool(rpcPoolDelegator);
 227         OFSessionUtil.getSessionManager().setExtensionConverterProvider(extensionConverterProvider);
 228
 229     }
 230
 231     /**
 232      * @param rpcThreadLimit
 233      * @param messageSpy
 234      * @return
 235      */
 236     private static ListeningExecutorService createRpcPoolSpyDecorated(final int rpcThreadLimit, final MessageSpy<DataContainer> messageSpy) {
 237         final BlockingQueue<Runnable> delegate = new LinkedBlockingQueue<>(100000);
 238         final BlockingQueue<Runnable> queue = new ForwardingBlockingQueue<Runnable>() {
 239             @Override
 240             protected BlockingQueue<Runnable> delegate() {
 241                 return delegate;
 242             }
 243
 244             @Override
 245             public boolean offer(final Runnable r) {
 246                 // ThreadPoolExecutor will spawn a new thread after core size is reached only
 247                 // if the queue.offer returns false.
 248                 return false;
 249             }
 250         };
 251
 252         ThreadPoolLoggingExecutor rpcPool = new ThreadPoolLoggingExecutor(rpcThreadLimit, rpcThreadLimit, 0L,
 253                 TimeUnit.MILLISECONDS, queue, "OFRpc");
 254         rpcPool.setRejectedExecutionHandler(new RejectedExecutionHandler() {
 255                         @Override
 256                         public void rejectedExecution(final Runnable r, final ThreadPoolExecutor executor) {
 257                                 try {
 258                                         executor.getQueue().put(r);
 259                                 } catch (InterruptedException e) {
 260                                         throw new RejectedExecutionException("Interrupted while waiting on queue", e);
 261                                 }
 262
 263                         }
 264                 });
 265         ListeningExecutorService listeningRpcPool = MoreExecutors.listeningDecorator(rpcPool);
 266         RpcListeningExecutorService rpcPoolDecorated = new RpcListeningExecutorService(listeningRpcPool);
 267         rpcPoolDecorated.setMessageSpy(messageSpy);
 268         return rpcPoolDecorated;
 269     }
 270
 271     /**
 272      * @param switchConnectionProviders
 273      *            the switchConnectionProviders to set
 274      */
 275     public void setSwitchConnectionProviders(final Collection<SwitchConnectionProvider> switchConnectionProviders) {
 276         this.switchConnectionProviders = switchConnectionProviders;
 277     }
 278
 279     /**
 280      * Function called by dependency manager after "init ()" is called and after
 281      * the services provided by the class are registered in the service registry
 282      *
 283      */
 284     public void start() {
 285         LOG.debug("starting ..");
 286         LOG.debug("switchConnectionProvider: " + switchConnectionProviders);
 287         // setup handler
 288         SwitchConnectionHandlerImpl switchConnectionHandler = new SwitchConnectionHandlerImpl();
 289         switchConnectionHandler.setMessageSpy(messageSpyCounter);
 290
 291         errorHandler = new ErrorHandlerSimpleImpl();
 292
 293         switchConnectionHandler.setErrorHandler(errorHandler);
 294         switchConnectionHandler.init();
 295
 296         List<ListenableFuture<Boolean>> starterChain = new ArrayList<>(switchConnectionProviders.size());
 297         for (SwitchConnectionProvider switchConnectionPrv : switchConnectionProviders) {
 298             switchConnectionPrv.setSwitchConnectionHandler(switchConnectionHandler);
 299             ListenableFuture<Boolean> isOnlineFuture = switchConnectionPrv.startup();
 300             starterChain.add(isOnlineFuture);
 301         }
 302
 303         Future<List<Boolean>> srvStarted = Futures.allAsList(starterChain);
 304     }
 305
 306     /**
 307      * Function called by the dependency manager before the services exported by
 308      * the component are unregistered, this will be followed by a "destroy ()"
 309      * calls
 310      *
 311      */
 312     public void stop() {
 313         LOG.debug("stopping");
 314         List<ListenableFuture<Boolean>> stopChain = new ArrayList<>(switchConnectionProviders.size());
 315         try {
 316             for (SwitchConnectionProvider switchConnectionPrv : switchConnectionProviders) {
 317                 ListenableFuture<Boolean> shutdown =  switchConnectionPrv.shutdown();
 318                 stopChain.add(shutdown);
 319             }
 320             Futures.allAsList(stopChain).get(5000, TimeUnit.MILLISECONDS);
 321         } catch (InterruptedException | ExecutionException | TimeoutException e) {
 322             LOG.error(e.getMessage(), e);
 323         }
 324         close();
 325     }
 326
 327     /**
 328      * Function called by the dependency manager when at least one dependency
 329      * become unsatisfied or when the component is shutting down because for
 330      * example bundle is being stopped.
 331      *
 332      */
 333     public void destroy() {
 334         close();
 335     }
 336
 337     @Override
 338     public void addMessageTranslator(final Class<? extends DataObject> messageType, final int version, final IMDMessageTranslator<OfHeader, List<DataObject>> translator) {
 339         TranslatorKey tKey = new TranslatorKey(version, messageType.getName());
 340
 341         Collection<IMDMessageTranslator<OfHeader, List<DataObject>>> existingValues = messageTranslators.get(tKey);
 342         if (existingValues == null) {
 343             existingValues = new LinkedHashSet<>();
 344             messageTranslators.put(tKey, existingValues);
 345         }
 346         existingValues.add(translator);
 347         LOG.debug("{} is now translated by {}", messageType, translator);
 348     }
 349
 350     @Override
 351     public void removeMessageTranslator(final Class<? extends DataObject> messageType, final int version, final IMDMessageTranslator<OfHeader, List<DataObject>> translator) {
 352         TranslatorKey tKey = new TranslatorKey(version, messageType.getName());
 353         Collection<IMDMessageTranslator<OfHeader, List<DataObject>>> values = messageTranslators.get(tKey);
 354         if (values != null) {
 355             values.remove(translator);
 356             if (values.isEmpty()) {
 357                 messageTranslators.remove(tKey);
 358             }
 359             LOG.debug("{} is now removed from translators", translator);
 360          }
 361     }
 362
 363     @Override
 364     public void addMessagePopListener(final Class<? extends DataObject> messageType, final PopListener<DataObject> popListener) {
 365         Collection<PopListener<DataObject>> existingValues = popListeners.get(messageType);
 366         if (existingValues == null) {
 367             existingValues = new LinkedHashSet<>();
 368             popListeners.put(messageType, existingValues);
 369         }
 370         existingValues.add(popListener);
 371         LOG.debug("{} is now popListened by {}", messageType, popListener);
 372     }
 373
 374     @Override
 375     public void removeMessagePopListener(final Class<? extends DataObject> messageType, final PopListener<DataObject> popListener) {
 376         Collection<PopListener<DataObject>> values = popListeners.get(messageType);
 377         if (values != null) {
 378             values.remove(popListener);
 379             if (values.isEmpty()) {
 380                 popListeners.remove(messageType);
 381             }
 382             LOG.debug("{} is now removed from popListeners", popListener);
 383          }
 384     }
 385
 386     /**
 387      * @param messageSpyCounter the messageSpyCounter to set
 388      */
 389     public void setMessageSpyCounter(
 390             final MessageSpy<DataContainer> messageSpyCounter) {
 391         this.messageSpyCounter = messageSpyCounter;
 392     }
 393
 394     @Override
 395     public void close() {
 396         LOG.debug("close");
 397         messageSpyCounter = null;
 398         messageTranslators = null;
 399         popListeners = null;
 400         for (SwitchConnectionProvider switchConnectionPrv : switchConnectionProviders) {
 401             switchConnectionPrv.setSwitchConnectionHandler(null);
 402         }
 403         switchConnectionProviders = null;
 404         OpenflowPortsUtil.close();
 405         OFSessionUtil.releaseSessionManager();
 406         errorHandler = null;
 407     }
 408
 409     /**
 410      * @param extensionConverterProvider
 411      */
 412     public void setExtensionConverterProvider(ExtensionConverterProvider extensionConverterProvider) {
 413         this.extensionConverterProvider = extensionConverterProvider;
 414     }
 415 }