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.api.connection.ConnectionConfiguration;
  29 import org.opendaylight.openflowjava.protocol.spi.connection.SwitchConnectionProvider;
  30 import org.opendaylight.openflowplugin.openflow.md.OFConstants;
  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.PacketInTranslator;
  43 import org.opendaylight.openflowplugin.openflow.md.core.translator.PacketInV10Translator;
  44 import org.opendaylight.openflowplugin.openflow.md.core.translator.PortStatusMessageToNodeConnectorUpdatedTranslator;
  45 import org.opendaylight.openflowplugin.openflow.md.lldp.LLDPSpeakerPopListener;
  46 import org.opendaylight.openflowplugin.openflow.md.queue.PopListener;
  47 import org.opendaylight.openflowplugin.openflow.md.util.OpenflowPortsUtil;
  48 import org.opendaylight.openflowplugin.statistics.MessageSpy;
  49 import org.opendaylight.yang.gen.v1.urn.opendaylight.flow.service.rev130819.NodeErrorNotification;
  50 import org.opendaylight.yang.gen.v1.urn.opendaylight.flow.service.rev130819.SwitchFlowRemoved;
  51 import org.opendaylight.yang.gen.v1.urn.opendaylight.flow.statistics.rev130819.AggregateFlowStatisticsUpdate;
  52 import org.opendaylight.yang.gen.v1.urn.opendaylight.flow.statistics.rev130819.FlowsStatisticsUpdate;
  53 import org.opendaylight.yang.gen.v1.urn.opendaylight.flow.table.statistics.rev131215.FlowTableStatisticsUpdate;
  54 import org.opendaylight.yang.gen.v1.urn.opendaylight.group.statistics.rev131111.GroupDescStatsUpdated;
  55 import org.opendaylight.yang.gen.v1.urn.opendaylight.group.statistics.rev131111.GroupFeaturesUpdated;
  56 import org.opendaylight.yang.gen.v1.urn.opendaylight.group.statistics.rev131111.GroupStatisticsUpdated;
  57 import org.opendaylight.yang.gen.v1.urn.opendaylight.inventory.rev130819.NodeConnectorUpdated;
  58 import org.opendaylight.yang.gen.v1.urn.opendaylight.inventory.rev130819.NodeUpdated;
  59 import org.opendaylight.yang.gen.v1.urn.opendaylight.meter.statistics.rev131111.MeterConfigStatsUpdated;
  60 import org.opendaylight.yang.gen.v1.urn.opendaylight.meter.statistics.rev131111.MeterFeaturesUpdated;
  61 import org.opendaylight.yang.gen.v1.urn.opendaylight.meter.statistics.rev131111.MeterStatisticsUpdated;
  62 import org.opendaylight.yang.gen.v1.urn.opendaylight.node.error.service.rev140410.BadActionErrorNotification;
  63 import org.opendaylight.yang.gen.v1.urn.opendaylight.node.error.service.rev140410.BadInstructionErrorNotification;
  64 import org.opendaylight.yang.gen.v1.urn.opendaylight.node.error.service.rev140410.BadMatchErrorNotification;
  65 import org.opendaylight.yang.gen.v1.urn.opendaylight.node.error.service.rev140410.BadRequestErrorNotification;
  66 import org.opendaylight.yang.gen.v1.urn.opendaylight.node.error.service.rev140410.ExperimenterErrorNotification;
  67 import org.opendaylight.yang.gen.v1.urn.opendaylight.node.error.service.rev140410.FlowModErrorNotification;
  68 import org.opendaylight.yang.gen.v1.urn.opendaylight.node.error.service.rev140410.GroupModErrorNotification;
  69 import org.opendaylight.yang.gen.v1.urn.opendaylight.node.error.service.rev140410.HelloFailedErrorNotification;
  70 import org.opendaylight.yang.gen.v1.urn.opendaylight.node.error.service.rev140410.MeterModErrorNotification;
  71 import org.opendaylight.yang.gen.v1.urn.opendaylight.node.error.service.rev140410.PortModErrorNotification;
  72 import org.opendaylight.yang.gen.v1.urn.opendaylight.node.error.service.rev140410.QueueOpErrorNotification;
  73 import org.opendaylight.yang.gen.v1.urn.opendaylight.node.error.service.rev140410.RoleRequestErrorNotification;
  74 import org.opendaylight.yang.gen.v1.urn.opendaylight.node.error.service.rev140410.SwitchConfigErrorNotification;
  75 import org.opendaylight.yang.gen.v1.urn.opendaylight.node.error.service.rev140410.TableFeaturesErrorNotification;
  76 import org.opendaylight.yang.gen.v1.urn.opendaylight.node.error.service.rev140410.TableModErrorNotification;
  77 import org.opendaylight.yang.gen.v1.urn.opendaylight.openflow.protocol.rev130731.ErrorMessage;
  78 import org.opendaylight.yang.gen.v1.urn.opendaylight.openflow.protocol.rev130731.ExperimenterMessage;
  79 import org.opendaylight.yang.gen.v1.urn.opendaylight.openflow.protocol.rev130731.FlowRemovedMessage;
  80 import org.opendaylight.yang.gen.v1.urn.opendaylight.openflow.protocol.rev130731.GetFeaturesOutput;
  81 import org.opendaylight.yang.gen.v1.urn.opendaylight.openflow.protocol.rev130731.MultipartReplyMessage;
  82 import org.opendaylight.yang.gen.v1.urn.opendaylight.openflow.protocol.rev130731.OfHeader;
  83 import org.opendaylight.yang.gen.v1.urn.opendaylight.openflow.protocol.rev130731.PacketInMessage;
  84 import org.opendaylight.yang.gen.v1.urn.opendaylight.openflow.protocol.rev130731.PortStatusMessage;
  85 import org.opendaylight.yang.gen.v1.urn.opendaylight.packet.service.rev130709.PacketReceived;
  86 import org.opendaylight.yang.gen.v1.urn.opendaylight.packet.service.rev130709.TransmitPacketInput;
  87 import org.opendaylight.yang.gen.v1.urn.opendaylight.port.statistics.rev131214.NodeConnectorStatisticsUpdate;
  88 import org.opendaylight.yang.gen.v1.urn.opendaylight.queue.statistics.rev131216.QueueStatisticsUpdate;
  89 import org.opendaylight.yang.gen.v1.urn.opendaylight.table.service.rev131026.TableUpdated;
  90 import org.opendaylight.yangtools.yang.binding.DataContainer;
  91 import org.opendaylight.yangtools.yang.binding.DataObject;
  92 import org.slf4j.Logger;
  93 import org.slf4j.LoggerFactory;
  94
  95 import com.google.common.collect.Lists;
  96 import com.google.common.util.concurrent.ForwardingBlockingQueue;
  97 import com.google.common.util.concurrent.Futures;
  98 import com.google.common.util.concurrent.ListenableFuture;
  99 import com.google.common.util.concurrent.ListeningExecutorService;
 100 import com.google.common.util.concurrent.MoreExecutors;
 101
 102 /**
 103  *
 104  */
 105 public class MDController implements IMDController, AutoCloseable {
 106
 107     private static final Logger LOG = LoggerFactory.getLogger(MDController.class);
 108
 109     private Collection<SwitchConnectionProvider> switchConnectionProviders;
 110
 111     private ConcurrentMap<TranslatorKey, Collection<IMDMessageTranslator<OfHeader, List<DataObject>>>> messageTranslators;
 112     private Map<Class<? extends DataObject>, Collection<PopListener<DataObject>>> popListeners;
 113     private MessageSpy<DataContainer> messageSpyCounter;
 114
 115     final private int OF10 = OFConstants.OFP_VERSION_1_0;
 116     final private int OF13 = OFConstants.OFP_VERSION_1_3;
 117
 118     private ErrorHandlerSimpleImpl errorHandler;
 119
 120     private ExtensionConverterProvider extensionConverterProvider;
 121
 122     /**
 123      * @return translator mapping
 124      */
 125     public Map<TranslatorKey, Collection<IMDMessageTranslator<OfHeader, List<DataObject>>>> getMessageTranslators() {
 126         return messageTranslators;
 127     }
 128
 129     /**
 130      * provisioning of translator mapping
 131      */
 132     public void init() {
 133         LOG.debug("init");
 134
 135         OpenflowPortsUtil.init();
 136
 137         messageTranslators = new ConcurrentHashMap<>();
 138         popListeners = new ConcurrentHashMap<>();
 139         //TODO: move registration to factory
 140         addMessageTranslator(ErrorMessage.class, OF10, new ErrorV10Translator());
 141         addMessageTranslator(ErrorMessage.class, OF13, new ErrorTranslator());
 142         addMessageTranslator(FlowRemovedMessage.class, OF10, new FlowRemovedTranslator());
 143         addMessageTranslator(FlowRemovedMessage.class, OF13, new FlowRemovedTranslator());
 144         addMessageTranslator(PacketInMessage.class,OF10, new PacketInV10Translator());
 145         addMessageTranslator(PacketInMessage.class,OF13, new PacketInTranslator());
 146         addMessageTranslator(PortStatusMessage.class,OF10, new PortStatusMessageToNodeConnectorUpdatedTranslator());
 147         addMessageTranslator(PortStatusMessage.class,OF13, new PortStatusMessageToNodeConnectorUpdatedTranslator());
 148         addMessageTranslator(MultipartReplyMessage.class,OF13,new MultiPartReplyPortToNodeConnectorUpdatedTranslator());
 149         addMessageTranslator(MultipartReplyMessage.class,OF10, new MultiPartMessageDescToNodeUpdatedTranslator());
 150         addMessageTranslator(MultipartReplyMessage.class,OF13, new MultiPartMessageDescToNodeUpdatedTranslator());
 151         addMessageTranslator(ExperimenterMessage.class, OF10, new ExperimenterTranslator());
 152         addMessageTranslator(MultipartReplyMessage.class,OF10, new MultipartReplyTranslator());
 153         addMessageTranslator(MultipartReplyMessage.class,OF13, new MultipartReplyTranslator());
 154         addMessageTranslator(MultipartReplyMessage.class,OF13,new MultipartReplyTableFeaturesToTableUpdatedTranslator());
 155         addMessageTranslator(GetFeaturesOutput.class,OF10, new FeaturesV10ToNodeConnectorUpdatedTranslator());
 156
 157         NotificationPopListener<DataObject> notificationPopListener = new NotificationPopListener<DataObject>();
 158         notificationPopListener.setNotificationProviderService(
 159                 OFSessionUtil.getSessionManager().getNotificationProviderService());
 160         notificationPopListener.setMessageSpy(messageSpyCounter);
 161
 162         //TODO: move registration to factory
 163         addMessagePopListener(NodeErrorNotification.class, notificationPopListener);
 164         addMessagePopListener(BadActionErrorNotification.class, notificationPopListener);
 165         addMessagePopListener(BadInstructionErrorNotification.class, notificationPopListener);
 166         addMessagePopListener(BadMatchErrorNotification.class, notificationPopListener);
 167         addMessagePopListener(BadRequestErrorNotification.class, notificationPopListener);
 168         addMessagePopListener(ExperimenterErrorNotification.class, notificationPopListener);
 169         addMessagePopListener(FlowModErrorNotification.class, notificationPopListener);
 170         addMessagePopListener(GroupModErrorNotification.class, notificationPopListener);
 171         addMessagePopListener(HelloFailedErrorNotification.class, notificationPopListener);
 172         addMessagePopListener(MeterModErrorNotification.class, notificationPopListener);
 173         addMessagePopListener(PortModErrorNotification.class, notificationPopListener);
 174         addMessagePopListener(QueueOpErrorNotification.class, notificationPopListener);
 175         addMessagePopListener(RoleRequestErrorNotification.class, notificationPopListener);
 176         addMessagePopListener(SwitchConfigErrorNotification.class, notificationPopListener);
 177         addMessagePopListener(TableFeaturesErrorNotification.class, notificationPopListener);
 178         addMessagePopListener(TableModErrorNotification.class, notificationPopListener);
 179         addMessagePopListener(NodeConnectorUpdated.class,notificationPopListener);
 180         addMessagePopListener(PacketReceived.class,notificationPopListener);
 181         addMessagePopListener(TransmitPacketInput.class, notificationPopListener);
 182         addMessagePopListener(NodeUpdated.class, notificationPopListener);
 183
 184         addMessagePopListener(SwitchFlowRemoved.class, notificationPopListener);
 185         addMessagePopListener(TableUpdated.class, notificationPopListener);
 186
 187         //Notification registration for flow statistics
 188         addMessagePopListener(FlowsStatisticsUpdate.class, notificationPopListener);
 189         addMessagePopListener(AggregateFlowStatisticsUpdate.class, notificationPopListener);
 190
 191         //Notification registrations for group-statistics
 192         addMessagePopListener(GroupStatisticsUpdated.class, notificationPopListener);
 193         addMessagePopListener(GroupFeaturesUpdated.class, notificationPopListener);
 194         addMessagePopListener(GroupDescStatsUpdated.class, notificationPopListener);
 195
 196         //Notification registrations for meter-statistics
 197         addMessagePopListener(MeterStatisticsUpdated.class, notificationPopListener);
 198         addMessagePopListener(MeterConfigStatsUpdated.class, notificationPopListener);
 199         addMessagePopListener(MeterFeaturesUpdated.class, notificationPopListener);
 200
 201         //Notification registration for port-statistics
 202         addMessagePopListener(NodeConnectorStatisticsUpdate.class, notificationPopListener);
 203
 204         //Notification registration for flow-table statistics
 205         addMessagePopListener(FlowTableStatisticsUpdate.class, notificationPopListener);
 206
 207         //Notification registration for queue-statistics
 208         addMessagePopListener(QueueStatisticsUpdate.class, notificationPopListener);
 209
 210         //Notification for LLDPSpeaker
 211         LLDPSpeakerPopListener<DataObject> lldpPopListener  = new LLDPSpeakerPopListener<DataObject>();
 212         addMessagePopListener(NodeConnectorUpdated.class,lldpPopListener);
 213
 214         // Push the updated Listeners to Session Manager which will be then picked up by ConnectionConductor eventually
 215         OFSessionUtil.getSessionManager().setTranslatorMapping(messageTranslators);
 216         OFSessionUtil.getSessionManager().setPopListenerMapping(popListeners);
 217         OFSessionUtil.getSessionManager().setMessageSpy(messageSpyCounter);
 218
 219         // prepare worker pool for rpc
 220         // TODO: get size from configSubsystem
 221         int rpcThreadLimit = 10;
 222         ListeningExecutorService rpcPoolDelegator = createRpcPoolSpyDecorated(rpcThreadLimit, messageSpyCounter);
 223         OFSessionUtil.getSessionManager().setRpcPool(rpcPoolDelegator);
 224         OFSessionUtil.getSessionManager().setExtensionConverterProvider(extensionConverterProvider);
 225
 226     }
 227
 228     /**
 229      * @param rpcThreadLimit
 230      * @param messageSpy
 231      * @return
 232      */
 233     private static ListeningExecutorService createRpcPoolSpyDecorated(final int rpcThreadLimit, final MessageSpy<DataContainer> messageSpy) {
 234         final BlockingQueue<Runnable> delegate = new LinkedBlockingQueue<>(100000);
 235         final BlockingQueue<Runnable> queue = new ForwardingBlockingQueue<Runnable>() {
 236             @Override
 237             protected BlockingQueue<Runnable> delegate() {
 238                 return delegate;
 239             }
 240
 241             @Override
 242             public boolean offer(final Runnable r) {
 243                 // ThreadPoolExecutor will spawn a new thread after core size is reached only
 244                 // if the queue.offer returns false.
 245                 return false;
 246             }
 247         };
 248
 249         ThreadPoolLoggingExecutor rpcPool = new ThreadPoolLoggingExecutor(rpcThreadLimit, rpcThreadLimit, 0L,
 250                 TimeUnit.MILLISECONDS, queue, "OFRpc");
 251         rpcPool.setRejectedExecutionHandler(new RejectedExecutionHandler() {
 252                         @Override
 253                         public void rejectedExecution(final Runnable r, final ThreadPoolExecutor executor) {
 254                                 try {
 255                                         executor.getQueue().put(r);
 256                                 } catch (InterruptedException e) {
 257                                         throw new RejectedExecutionException("Interrupted while waiting on queue", e);
 258                                 }
 259
 260                         }
 261                 });
 262         ListeningExecutorService listeningRpcPool = MoreExecutors.listeningDecorator(rpcPool);
 263         RpcListeningExecutorService rpcPoolDecorated = new RpcListeningExecutorService(listeningRpcPool);
 264         rpcPoolDecorated.setMessageSpy(messageSpy);
 265         return rpcPoolDecorated;
 266     }
 267
 268     /**
 269      * @param switchConnectionProviders
 270      *            the switchConnectionProviders to set
 271      */
 272     public void setSwitchConnectionProviders(final Collection<SwitchConnectionProvider> switchConnectionProviders) {
 273         this.switchConnectionProviders = switchConnectionProviders;
 274     }
 275
 276     /**
 277      * Function called by dependency manager after "init ()" is called and after
 278      * the services provided by the class are registered in the service registry
 279      *
 280      */
 281     public void start() {
 282         LOG.debug("starting ..");
 283         LOG.debug("switchConnectionProvider: " + switchConnectionProviders);
 284         // setup handler
 285         SwitchConnectionHandlerImpl switchConnectionHandler = new SwitchConnectionHandlerImpl();
 286         switchConnectionHandler.setMessageSpy(messageSpyCounter);
 287
 288         errorHandler = new ErrorHandlerSimpleImpl();
 289
 290         switchConnectionHandler.setErrorHandler(errorHandler);
 291         switchConnectionHandler.init();
 292
 293         List<ListenableFuture<Boolean>> starterChain = new ArrayList<>(switchConnectionProviders.size());
 294         for (SwitchConnectionProvider switchConnectionPrv : switchConnectionProviders) {
 295             switchConnectionPrv.setSwitchConnectionHandler(switchConnectionHandler);
 296             ListenableFuture<Boolean> isOnlineFuture = switchConnectionPrv.startup();
 297             starterChain.add(isOnlineFuture);
 298         }
 299
 300         Future<List<Boolean>> srvStarted = Futures.allAsList(starterChain);
 301     }
 302
 303     /**
 304      * @return wished connections configurations
 305      * @deprecated use configSubsystem
 306      */
 307     @Deprecated
 308     private static Collection<ConnectionConfiguration> getConnectionConfiguration() {
 309         // TODO:: get config from state manager
 310         ConnectionConfiguration configuration = ConnectionConfigurationFactory.getDefault();
 311         ConnectionConfiguration configurationLegacy = ConnectionConfigurationFactory.getLegacy();
 312         return Lists.newArrayList(configuration, configurationLegacy);
 313     }
 314
 315     /**
 316      * Function called by the dependency manager before the services exported by
 317      * the component are unregistered, this will be followed by a "destroy ()"
 318      * calls
 319      *
 320      */
 321     public void stop() {
 322         LOG.debug("stopping");
 323         List<ListenableFuture<Boolean>> stopChain = new ArrayList<>(switchConnectionProviders.size());
 324         try {
 325             for (SwitchConnectionProvider switchConnectionPrv : switchConnectionProviders) {
 326                 ListenableFuture<Boolean> shutdown =  switchConnectionPrv.shutdown();
 327                 stopChain.add(shutdown);
 328             }
 329             Futures.allAsList(stopChain).get(5000, TimeUnit.MILLISECONDS);
 330         } catch (InterruptedException | ExecutionException | TimeoutException e) {
 331             LOG.error(e.getMessage(), e);
 332         }
 333         close();
 334     }
 335
 336     /**
 337      * Function called by the dependency manager when at least one dependency
 338      * become unsatisfied or when the component is shutting down because for
 339      * example bundle is being stopped.
 340      *
 341      */
 342     public void destroy() {
 343         close();
 344     }
 345
 346     @Override
 347     public void addMessageTranslator(final Class<? extends DataObject> messageType, final int version, final IMDMessageTranslator<OfHeader, List<DataObject>> translator) {
 348         TranslatorKey tKey = new TranslatorKey(version, messageType.getName());
 349
 350         Collection<IMDMessageTranslator<OfHeader, List<DataObject>>> existingValues = messageTranslators.get(tKey);
 351         if (existingValues == null) {
 352             existingValues = new LinkedHashSet<>();
 353             messageTranslators.put(tKey, existingValues);
 354         }
 355         existingValues.add(translator);
 356         LOG.debug("{} is now translated by {}", messageType, translator);
 357     }
 358
 359     @Override
 360     public void removeMessageTranslator(final Class<? extends DataObject> messageType, final int version, final IMDMessageTranslator<OfHeader, List<DataObject>> translator) {
 361         TranslatorKey tKey = new TranslatorKey(version, messageType.getName());
 362         Collection<IMDMessageTranslator<OfHeader, List<DataObject>>> values = messageTranslators.get(tKey);
 363         if (values != null) {
 364             values.remove(translator);
 365             if (values.isEmpty()) {
 366                 messageTranslators.remove(tKey);
 367             }
 368             LOG.debug("{} is now removed from translators", translator);
 369          }
 370     }
 371
 372     @Override
 373     public void addMessagePopListener(final Class<? extends DataObject> messageType, final PopListener<DataObject> popListener) {
 374         Collection<PopListener<DataObject>> existingValues = popListeners.get(messageType);
 375         if (existingValues == null) {
 376             existingValues = new LinkedHashSet<>();
 377             popListeners.put(messageType, existingValues);
 378         }
 379         existingValues.add(popListener);
 380         LOG.debug("{} is now popListened by {}", messageType, popListener);
 381     }
 382
 383     @Override
 384     public void removeMessagePopListener(final Class<? extends DataObject> messageType, final PopListener<DataObject> popListener) {
 385         Collection<PopListener<DataObject>> values = popListeners.get(messageType);
 386         if (values != null) {
 387             values.remove(popListener);
 388             if (values.isEmpty()) {
 389                 popListeners.remove(messageType);
 390             }
 391             LOG.debug("{} is now removed from popListeners", popListener);
 392          }
 393     }
 394
 395     /**
 396      * @param messageSpyCounter the messageSpyCounter to set
 397      */
 398     public void setMessageSpyCounter(
 399             final MessageSpy<DataContainer> messageSpyCounter) {
 400         this.messageSpyCounter = messageSpyCounter;
 401     }
 402
 403     @Override
 404     public void close() {
 405         LOG.debug("close");
 406         messageSpyCounter = null;
 407         messageTranslators = null;
 408         popListeners = null;
 409         for (SwitchConnectionProvider switchConnectionPrv : switchConnectionProviders) {
 410             switchConnectionPrv.setSwitchConnectionHandler(null);
 411         }
 412         switchConnectionProviders = null;
 413         OpenflowPortsUtil.close();
 414         OFSessionUtil.releaseSessionManager();
 415         errorHandler = null;
 416     }
 417
 418     /**
 419      * @param extensionConverterProvider
 420      */
 421     public void setExtensionConverterProvider(ExtensionConverterProvider extensionConverterProvider) {
 422         this.extensionConverterProvider = extensionConverterProvider;
 423     }
 424 }