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