mappingservice/southbound/src/main/java/org/opendaylight/lispflowmapping/southbound/lisp/LispSouthboundHandler.java

   1 /*
   2  * Copyright (c) 2014 Contextream, 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.lispflowmapping.southbound.lisp;
  10
  11 import com.google.common.base.Preconditions;
  12 import io.netty.buffer.ByteBufUtil;
  13 import io.netty.channel.ChannelHandler;
  14 import io.netty.channel.ChannelHandlerContext;
  15 import io.netty.channel.SimpleChannelInboundHandler;
  16 import io.netty.channel.socket.DatagramPacket;
  17 import java.net.InetAddress;
  18 import java.nio.ByteBuffer;
  19 import java.util.ArrayList;
  20 import java.util.Arrays;
  21 import java.util.List;
  22 import java.util.Map;
  23 import org.opendaylight.controller.md.sal.binding.api.DataBroker;
  24 import org.opendaylight.controller.md.sal.binding.api.NotificationPublishService;
  25 import org.opendaylight.lispflowmapping.inmemorydb.HashMapDb;
  26 import org.opendaylight.lispflowmapping.southbound.authentication.LispAuthenticationUtil;
  27 import org.opendaylight.lispflowmapping.lisp.serializer.MapNotifySerializer;
  28 import org.opendaylight.lispflowmapping.lisp.serializer.MapRegisterSerializer;
  29 import org.opendaylight.lispflowmapping.lisp.serializer.MapReplySerializer;
  30 import org.opendaylight.lispflowmapping.lisp.serializer.MapRequestSerializer;
  31 import org.opendaylight.lispflowmapping.lisp.type.LispMessage;
  32 import org.opendaylight.lispflowmapping.lisp.util.ByteUtil;
  33 import org.opendaylight.lispflowmapping.lisp.util.LispAddressStringifier;
  34 import org.opendaylight.lispflowmapping.lisp.util.MapRequestUtil;
  35 import org.opendaylight.lispflowmapping.mapcache.SimpleMapCache;
  36 import org.opendaylight.lispflowmapping.southbound.LispSouthboundPlugin;
  37 import org.opendaylight.lispflowmapping.southbound.LispSouthboundStats;
  38 import org.opendaylight.lispflowmapping.southbound.lisp.cache.MapRegisterCache;
  39 import org.opendaylight.lispflowmapping.southbound.lisp.cache.MapRegisterPartialDeserializer;
  40 import org.opendaylight.lispflowmapping.southbound.lisp.exception.LispMalformedPacketException;
  41 import org.opendaylight.lispflowmapping.southbound.lisp.network.PacketHeader;
  42 import org.opendaylight.lispflowmapping.southbound.util.LispNotificationHelper;
  43 import org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.inet.types.rev100924.PortNumber;
  44 import org.opendaylight.yang.gen.v1.urn.opendaylight.lfm.lisp.proto.rev151105.AddMappingBuilder;
  45 import org.opendaylight.yang.gen.v1.urn.opendaylight.lfm.lisp.proto.rev151105.GotMapNotifyBuilder;
  46 import org.opendaylight.yang.gen.v1.urn.opendaylight.lfm.lisp.proto.rev151105.GotMapReplyBuilder;
  47 import org.opendaylight.yang.gen.v1.urn.opendaylight.lfm.lisp.proto.rev151105.MapNotify;
  48 import org.opendaylight.yang.gen.v1.urn.opendaylight.lfm.lisp.proto.rev151105.MapRegister;
  49 import org.opendaylight.yang.gen.v1.urn.opendaylight.lfm.lisp.proto.rev151105.MapReply;
  50 import org.opendaylight.yang.gen.v1.urn.opendaylight.lfm.lisp.proto.rev151105.MapRequest;
  51 import org.opendaylight.yang.gen.v1.urn.opendaylight.lfm.lisp.proto.rev151105.MappingKeepAlive;
  52 import org.opendaylight.yang.gen.v1.urn.opendaylight.lfm.lisp.proto.rev151105.MappingKeepAliveBuilder;
  53 import org.opendaylight.yang.gen.v1.urn.opendaylight.lfm.lisp.proto.rev151105.MessageType;
  54 import org.opendaylight.yang.gen.v1.urn.opendaylight.lfm.lisp.proto.rev151105.RequestMappingBuilder;
  55 import org.opendaylight.yang.gen.v1.urn.opendaylight.lfm.lisp.proto.rev151105.eid.container.Eid;
  56 import org.opendaylight.yang.gen.v1.urn.opendaylight.lfm.lisp.proto.rev151105.map.register.cache.key.container.MapRegisterCacheKey;
  57 import org.opendaylight.yang.gen.v1.urn.opendaylight.lfm.lisp.proto.rev151105.map.register.cache.metadata.container.MapRegisterCacheMetadata;
  58 import org.opendaylight.yang.gen.v1.urn.opendaylight.lfm.lisp.proto.rev151105.map.register.cache.metadata.container.MapRegisterCacheMetadataBuilder;
  59 import org.opendaylight.yang.gen.v1.urn.opendaylight.lfm.lisp.proto.rev151105.map.register.cache.metadata.container.map.register.cache.metadata.EidLispAddress;
  60 import org.opendaylight.yang.gen.v1.urn.opendaylight.lfm.lisp.proto.rev151105.map.register.cache.metadata.container.map.register.cache.metadata.EidLispAddressBuilder;
  61 import org.opendaylight.yang.gen.v1.urn.opendaylight.lfm.lisp.proto.rev151105.map.register.cache.value.grouping.MapRegisterCacheValue;
  62 import org.opendaylight.yang.gen.v1.urn.opendaylight.lfm.lisp.proto.rev151105.map.register.cache.value.grouping.MapRegisterCacheValueBuilder;
  63 import org.opendaylight.yang.gen.v1.urn.opendaylight.lfm.lisp.proto.rev151105.mapping.record.container.MappingRecord;
  64 import org.opendaylight.yang.gen.v1.urn.opendaylight.lfm.lisp.proto.rev151105.mapping.record.list.MappingRecordItem;
  65 import org.opendaylight.yang.gen.v1.urn.opendaylight.lfm.lisp.proto.rev151105.transport.address.TransportAddressBuilder;
  66 import org.opendaylight.yang.gen.v1.urn.opendaylight.lfm.mappingservice.rev150906.mapping.authkey.container.MappingAuthkey;
  67 import org.opendaylight.yangtools.yang.binding.Notification;
  68 import org.slf4j.Logger;
  69 import org.slf4j.LoggerFactory;
  70
  71 @ChannelHandler.Sharable
  72 public class LispSouthboundHandler extends SimpleChannelInboundHandler<DatagramPacket>
  73         implements ILispSouthboundService, AutoCloseable {
  74     private MapRegisterCache mapRegisterCache;
  75
  76     /**
  77      * How long is record supposed to be relevant. After this time record isn't valid.
  78      *
  79      * If you modify this value, please update the LispSouthboundServiceTest class too.
  80      */
  81     private static final long CACHE_RECORD_TIMEOUT = 90000;
  82     private DataBroker dataBroker;
  83
  84     private NotificationPublishService notificationPublishService;
  85     protected static final Logger LOG = LoggerFactory.getLogger(LispSouthboundHandler.class);
  86
  87     //TODO: think whether this field can be accessed through mappingservice or some other configuration parameter
  88     private boolean authenticationEnabled = true;
  89
  90     private final LispSouthboundPlugin lispSbPlugin;
  91     private LispSouthboundStats lispSbStats = null;
  92     private SimpleMapCache smc;
  93     private AuthenticationKeyDataListener authenticationKeyDataListener;
  94
  95     public LispSouthboundHandler(LispSouthboundPlugin lispSbPlugin) {
  96         this.lispSbPlugin = lispSbPlugin;
  97         if (lispSbPlugin != null) {
  98             this.lispSbStats = lispSbPlugin.getStats();
  99         }
 100         this.mapRegisterCache = new MapRegisterCache();
 101         this.smc = new SimpleMapCache(new HashMapDb());
 102     }
 103
 104     public void handlePacket(DatagramPacket msg) {
 105         ByteBuffer inBuffer = msg.content().nioBuffer();
 106         int type = ByteUtil.getUnsignedByte(inBuffer, LispMessage.Pos.TYPE) >> 4;
 107         handleStats(type);
 108         Object lispType = MessageType.forValue(type);
 109         if (lispType == MessageType.EncapsulatedControlMessage) {
 110             LOG.trace("Received packet of type Encapsulated Control Message");
 111             handleEncapsulatedControlMessage(inBuffer, msg.sender().getAddress());
 112         } else if (lispType == MessageType.MapRequest) {
 113             LOG.trace("Received packet of type Map-Request");
 114             handleMapRequest(inBuffer, msg.sender().getPort());
 115         } else if (lispType == MessageType.MapRegister) {
 116             LOG.trace("Received packet of type Map-Register");
 117             handleMapRegister(inBuffer, msg.sender().getAddress(), msg.sender().getPort());
 118         } else if (lispType == MessageType.MapNotify) {
 119             LOG.trace("Received packet of type Map-Notify");
 120             handleMapNotify(inBuffer, msg.sender().getAddress(), msg.sender().getPort());
 121         } else if (lispType == MessageType.MapReply) {
 122             LOG.trace("Received packet of type Map-Reply");
 123             handleMapReply(inBuffer, msg.sender().getAddress(), msg.sender().getPort());
 124         } else {
 125             LOG.warn("Received unknown LISP control packet (type " + ((lispType != null) ? lispType : type) + ")");
 126         }
 127     }
 128
 129     private void handleEncapsulatedControlMessage(ByteBuffer inBuffer, InetAddress sourceAddress) {
 130         try {
 131             handleMapRequest(inBuffer, extractEncapsulatedSourcePort(inBuffer));
 132         } catch (RuntimeException re) {
 133             throw new LispMalformedPacketException("Couldn't deserialize Map-Request (len="
 134                     + inBuffer.capacity() + ")", re);
 135         }
 136     }
 137
 138     private void handleMapRequest(ByteBuffer inBuffer, int port) {
 139         try {
 140             MapRequest request = MapRequestSerializer.getInstance().deserialize(inBuffer);
 141             InetAddress finalSourceAddress = MapRequestUtil.selectItrRloc(request);
 142             if (finalSourceAddress == null) {
 143                 throw new LispMalformedPacketException("Couldn't deserialize Map-Request, no ITR Rloc found!");
 144             }
 145
 146             RequestMappingBuilder requestMappingBuilder = new RequestMappingBuilder();
 147             requestMappingBuilder.setMapRequest(LispNotificationHelper.convertMapRequest(request));
 148             TransportAddressBuilder transportAddressBuilder = new TransportAddressBuilder();
 149             transportAddressBuilder.setIpAddress(
 150                     LispNotificationHelper.getIpAddressBinaryFromInetAddress(finalSourceAddress));
 151             transportAddressBuilder.setPort(new PortNumber(port));
 152             requestMappingBuilder.setTransportAddress(transportAddressBuilder.build());
 153             if (notificationPublishService != null) {
 154                 notificationPublishService.putNotification(requestMappingBuilder.build());
 155                 LOG.trace("MapRequest was published!");
 156             } else {
 157                 LOG.warn("Notification Provider is null!");
 158             }
 159         } catch (RuntimeException re) {
 160             throw new LispMalformedPacketException("Couldn't deserialize Map-Request (len="
 161                     + inBuffer.capacity() + ")", re);
 162         } catch (InterruptedException e) {
 163             LOG.warn("Notification publication interrupted!");
 164         }
 165     }
 166
 167     private int extractEncapsulatedSourcePort(ByteBuffer inBuffer) {
 168         try {
 169             inBuffer.position(PacketHeader.Length.LISP_ENCAPSULATION);
 170             int ipType = (inBuffer.get() >> 4);
 171             if (ipType == 4) {
 172                 inBuffer.position(inBuffer.position() + PacketHeader.Length.IPV4 - 1);
 173             } else if (ipType == 6) {
 174                 inBuffer.position(inBuffer.position() + PacketHeader.Length.IPV6_NO_EXT - 1);
 175             } else {
 176                 throw new LispMalformedPacketException(
 177                         "Couldn't deserialize Map-Request: inner packet has unknown IP version: " + ipType);
 178             }
 179
 180             int encapsulatedSourcePort = inBuffer.getShort() & 0xFFFF;
 181             inBuffer.position(inBuffer.position() + PacketHeader.Length.UDP - 2);
 182             return encapsulatedSourcePort;
 183         } catch (RuntimeException re) {
 184             throw new LispMalformedPacketException("Couldn't deserialize Map-Request (len="
 185                     + inBuffer.capacity() + ")", re);
 186         }
 187     }
 188
 189     private void handleMapRegister(ByteBuffer inBuffer, InetAddress sourceAddress, int port) {
 190         try {
 191             final Map.Entry<MapRegisterCacheKey, byte[]> artificialEntry = MapRegisterPartialDeserializer
 192                     .deserializePartially(inBuffer, sourceAddress);
 193             final MapRegisterCacheKey cacheKey = artificialEntry == null ? null : artificialEntry.getKey();
 194
 195             final MapRegisterCacheValue cacheValue = resolveCacheValue(artificialEntry);
 196             if (cacheValue != null) {
 197                 final MapRegisterCacheMetadata mapRegisterValue = cacheValue.getMapRegisterCacheMetadata();
 198                 LOG.debug("Map register message site-ID: {} xTR-ID: {} from cache.", mapRegisterValue.getSiteId(),
 199                         mapRegisterValue.getXtrId());
 200                 mapRegisterCache.refreshEntry(cacheKey);
 201                 sendNotificationIfPossible(createMappingKeepAlive(cacheValue));
 202                 if (mapRegisterValue.isWantMapNotify()) {
 203                     sendMapNotifyMsg(inBuffer, sourceAddress, port);
 204                 }
 205             } else {
 206                 MapRegister mapRegister = MapRegisterSerializer.getInstance().deserialize(inBuffer, sourceAddress);
 207                 if (isAuthenticationSuccessful(mapRegister, inBuffer)) {
 208                     AddMappingBuilder addMappingBuilder = new AddMappingBuilder();
 209                     addMappingBuilder.setMapRegister(LispNotificationHelper.convertMapRegister(mapRegister));
 210                     TransportAddressBuilder transportAddressBuilder = new TransportAddressBuilder();
 211                     transportAddressBuilder.setIpAddress(LispNotificationHelper.getIpAddressBinaryFromInetAddress(
 212                             sourceAddress));
 213                     transportAddressBuilder.setPort(new PortNumber(port));
 214                     addMappingBuilder.setTransportAddress(transportAddressBuilder.build());
 215                     sendNotificationIfPossible(addMappingBuilder.build());
 216                     if (artificialEntry != null) {
 217                         final MapRegisterCacheMetadataBuilder cacheMetadataBldNew = new
 218                                 MapRegisterCacheMetadataBuilder();
 219                         cacheMetadataBldNew.setEidLispAddress(provideEidPrefixesFromMessage(mapRegister));
 220                         cacheMetadataBldNew.setXtrId(mapRegister.getXtrId());
 221                         cacheMetadataBldNew.setSiteId(mapRegister.getSiteId());
 222                         cacheMetadataBldNew.setWantMapNotify(mapRegister.isWantMapNotify());
 223                         cacheMetadataBldNew.setMergeEnabled(mapRegister.isMergeEnabled());
 224                         cacheMetadataBldNew.setTimestamp(System.currentTimeMillis());
 225
 226                         final MapRegisterCacheValueBuilder cacheValueBldNew = new MapRegisterCacheValueBuilder();
 227                         cacheValueBldNew.setPacketData(artificialEntry.getValue());
 228                         cacheValueBldNew.setMapRegisterCacheMetadata(cacheMetadataBldNew.build());
 229
 230                         mapRegisterCache.addEntry(cacheKey, cacheValueBldNew.build());
 231                     }
 232                 }
 233             }
 234         } catch (RuntimeException re) {
 235             throw new LispMalformedPacketException("Couldn't deserialize Map-Register (len="
 236                     + inBuffer.capacity() + ")", re);
 237         } catch (InterruptedException e) {
 238             LOG.warn("Notification publication interrupted!");
 239         }
 240     }
 241
 242     private MapRegisterCacheValue resolveCacheValue(Map.Entry<MapRegisterCacheKey, byte[]> entry) {
 243         if (entry != null) {
 244             final MapRegisterCacheValue mapRegisterCacheValue = mapRegisterCache.getEntry(entry.getKey());
 245             if (mapRegisterCacheValue != null) {
 246                 final long creationTime = mapRegisterCacheValue.getMapRegisterCacheMetadata().getTimestamp();
 247                 final long currentTime = System.currentTimeMillis();
 248                 if (currentTime - creationTime > CACHE_RECORD_TIMEOUT) {
 249                     mapRegisterCache.removeEntry(entry.getKey());
 250                     return null;
 251                 } else if (Arrays.equals(mapRegisterCacheValue.getPacketData(), entry.getValue())) {
 252                     return mapRegisterCacheValue;
 253                 }
 254             }
 255         }
 256         return null;
 257     }
 258
 259     private void sendNotificationIfPossible(final Notification notification) throws InterruptedException {
 260         if (notificationPublishService != null) {
 261             notificationPublishService.putNotification(notification);
 262             LOG.trace("{} was published.", notification.getClass());
 263         } else {
 264             LOG.warn("Notification Provider is null!");
 265         }
 266     }
 267
 268     private MappingKeepAlive createMappingKeepAlive(final MapRegisterCacheValue value) {
 269         MappingKeepAliveBuilder mappingKeepAliveBuilder = new MappingKeepAliveBuilder();
 270         mappingKeepAliveBuilder.setMapRegisterCacheMetadata(value.getMapRegisterCacheMetadata());
 271         return mappingKeepAliveBuilder.build();
 272     }
 273
 274     private void sendMapNotifyMsg(final ByteBuffer inBuffer, final InetAddress inetAddress, int portNumber) {
 275         ByteBuffer outBuffer = transformMapRegisterToMapNotify(inBuffer);
 276         outBuffer.position(0);
 277         lispSbPlugin.handleSerializedLispBuffer(inetAddress, outBuffer, MessageType.MapNotify, portNumber);
 278     }
 279
 280     private ByteBuffer transformMapRegisterToMapNotify(final ByteBuffer buffer) {
 281         buffer.position(0);
 282         //TODO: also reset of authentication data is required. other trello card is opened for this task.
 283         byte[] byteReplacement = new byte[] {0x04, 0x00, 0x00};
 284         buffer.put(byteReplacement);
 285         return buffer;
 286     }
 287
 288     private List<EidLispAddress> provideEidPrefixesFromMessage(final MapRegister mapRegister) {
 289         List<EidLispAddress> eidsResult = new ArrayList<>();
 290         for (MappingRecordItem mappingRecordItem : mapRegister.getMappingRecordItem()) {
 291             final EidLispAddressBuilder eidLispAddressBuilder = new EidLispAddressBuilder();
 292             final Eid eid = mappingRecordItem.getMappingRecord().getEid();
 293             eidLispAddressBuilder.setEidLispAddressId(LispAddressStringifier.getString(eid));
 294             eidLispAddressBuilder.setEid(eid);
 295             eidsResult.add(eidLispAddressBuilder.build());
 296         }
 297         return eidsResult;
 298     }
 299
 300     /**
 301      * Checks whether authentication data is valid.
 302      *
 303      * Methods pass through all records from map register message. For the EID of the first record it gets
 304      * authentication key and does validation of authentication data again this authentication key. If it pass
 305      * it just checks for remaining records (and its EID) whether they have the same authenticatin key stored in
 306      * simple map cache (smc).
 307      *
 308      * @param mapRegister
 309      * @param byteBuffer
 310      * @return
 311      */
 312     private boolean isAuthenticationSuccessful(final MapRegister mapRegister, final ByteBuffer byteBuffer) {
 313         if (!authenticationEnabled) {
 314             return true;
 315         }
 316
 317         if (smc == null) {
 318             LOG.debug("Simple map cache wasn't instantieted and set.");
 319             return false;
 320         }
 321
 322         MappingAuthkey firstAuthKey = null;
 323         final List<MappingRecordItem> mappingRecords = mapRegister.getMappingRecordItem();
 324         for (int i = 0; i < mappingRecords.size(); i++) {
 325             final MappingRecordItem recordItem = mappingRecords.get(i);
 326             final MappingRecord mappingRecord = recordItem.getMappingRecord();
 327             if (i == 0) {
 328                 firstAuthKey = smc.getAuthenticationKey(mappingRecord.getEid());
 329                 if (!LispAuthenticationUtil.validate(mapRegister, byteBuffer, mappingRecord.getEid(), firstAuthKey)) {
 330                     return false;
 331                 }
 332             } else {
 333                 final Eid eid = mappingRecord.getEid();
 334                 final MappingAuthkey authKey = smc.getAuthenticationKey(eid);
 335                 if (!firstAuthKey.equals(authKey)) {
 336                     LOG.debug("Map register packet contained several eids. Authentication keys for first one and for " +
 337                             "{} are different.",LispAddressStringifier.getString(eid));
 338                     return false;
 339                 }
 340             }
 341         }
 342         return true;
 343     }
 344
 345     private void handleMapNotify(ByteBuffer inBuffer, InetAddress sourceAddress, int port) {
 346         try {
 347             MapNotify mapNotify = MapNotifySerializer.getInstance().deserialize(inBuffer);
 348             GotMapNotifyBuilder gotMapNotifyBuilder = new GotMapNotifyBuilder();
 349             gotMapNotifyBuilder.setMapNotify(LispNotificationHelper.convertMapNotify(mapNotify));
 350             TransportAddressBuilder transportAddressBuilder = new TransportAddressBuilder();
 351             transportAddressBuilder.setIpAddress(LispNotificationHelper
 352                     .getIpAddressBinaryFromInetAddress(sourceAddress));
 353             transportAddressBuilder.setPort(new PortNumber(port));
 354             gotMapNotifyBuilder.setTransportAddress(transportAddressBuilder.build());
 355             if (notificationPublishService != null) {
 356                 notificationPublishService.putNotification(gotMapNotifyBuilder.build());
 357                 LOG.trace("MapNotify was published!");
 358             } else {
 359                 LOG.warn("Notification Provider is null!");
 360             }
 361         } catch (RuntimeException re) {
 362             throw new LispMalformedPacketException("Couldn't deserialize Map-Notify (len="
 363                     + inBuffer.capacity() + ")", re);
 364         } catch (InterruptedException e) {
 365             LOG.warn("Notification publication interrupted!");
 366         }
 367     }
 368
 369
 370     private void handleMapReply(ByteBuffer inBuffer, InetAddress sourceAddress, int port) {
 371         try {
 372             MapReply mapReply = MapReplySerializer.getInstance().deserialize(inBuffer);
 373             GotMapReplyBuilder gotMapReplyBuilder = new GotMapReplyBuilder();
 374             gotMapReplyBuilder.setMapReply(LispNotificationHelper.convertMapReply(mapReply));
 375             TransportAddressBuilder transportAddressBuilder = new TransportAddressBuilder();
 376             transportAddressBuilder.setIpAddress(LispNotificationHelper
 377                     .getIpAddressBinaryFromInetAddress(sourceAddress));
 378             transportAddressBuilder.setPort(new PortNumber(port));
 379             gotMapReplyBuilder.setTransportAddress(transportAddressBuilder.build());
 380             if (notificationPublishService != null) {
 381                 notificationPublishService.putNotification(gotMapReplyBuilder.build());
 382                 LOG.trace("MapReply was published!");
 383             } else {
 384                 LOG.warn("Notification Provider is null!");
 385             }
 386         } catch (RuntimeException re) {
 387             throw new LispMalformedPacketException("Couldn't deserialize Map-Reply (len="
 388                     + inBuffer.capacity() + ")", re);
 389         } catch (InterruptedException e) {
 390             LOG.warn("Notification publication interrupted!");
 391         }
 392     }
 393
 394     private void handleStats(int type) {
 395         if (lispSbStats != null) {
 396             if (type <= LispSouthboundStats.MAX_LISP_TYPES) {
 397                 lispSbStats.incrementRx(type);
 398             } else {
 399                 lispSbStats.incrementRxUnknown();
 400             }
 401         }
 402     }
 403
 404     @Override
 405     protected void channelRead0(ChannelHandlerContext ctx, DatagramPacket msg) throws Exception {
 406         if (LOG.isTraceEnabled()) {
 407             LOG.trace("Received UDP packet from {}:{} with content:\n{}", msg.sender().getHostString(),
 408                     msg.sender().getPort(), ByteBufUtil.prettyHexDump(msg.content()));
 409         }
 410         handlePacket(msg);
 411     }
 412
 413     @Override
 414     public void channelReadComplete(ChannelHandlerContext ctx) throws Exception {
 415         ctx.flush();
 416     }
 417
 418     @Override
 419     public void exceptionCaught(ChannelHandlerContext ctx, Throwable cause) throws Exception {
 420         LOG.error("Error on channel: " + cause, cause);
 421     }
 422
 423     @Override
 424     public void close() throws Exception {
 425         authenticationKeyDataListener.closeDataChangeListener();
 426     }
 427
 428     public void setSimpleMapCache(final SimpleMapCache smc) {
 429         this.smc = smc;
 430     }
 431
 432     public void setDataBroker(final DataBroker dataBroker) {
 433         this.dataBroker = dataBroker;
 434     }
 435
 436     public void setNotificationProvider(NotificationPublishService nps) {
 437         this.notificationPublishService = nps;
 438     }
 439
 440     public void setMapRegisterCache(final MapRegisterCache mapRegisterCache) {
 441         this.mapRegisterCache = mapRegisterCache;
 442     }
 443
 444
 445     public void init() {
 446         Preconditions.checkNotNull(dataBroker);
 447         Preconditions.checkNotNull(smc);
 448         this.authenticationKeyDataListener = new AuthenticationKeyDataListener(dataBroker, smc);
 449     }
 450 }