openflow-protocol-impl/src/main/java/org/opendaylight/openflowjava/protocol/impl/connection/ConnectionAdapterImpl.java

   1 /* Copyright (C)2013 Pantheon Technologies, s.r.o. All rights reserved. */
   2
   3 package org.opendaylight.openflowjava.protocol.impl.connection;
   4
   5 import io.netty.channel.Channel;
   6 import io.netty.channel.ChannelFuture;
   7 import io.netty.util.concurrent.GenericFutureListener;
   8
   9 import java.util.Collection;
  10 import java.util.Collections;
  11 import java.util.List;
  12 import java.util.concurrent.Future;
  13 import java.util.concurrent.TimeUnit;
  14
  15 import org.opendaylight.controller.sal.common.util.RpcErrors;
  16 import org.opendaylight.controller.sal.common.util.Rpcs;
  17 import org.opendaylight.openflowjava.protocol.api.connection.ConnectionReadyListener;
  18 import org.opendaylight.yang.gen.v1.urn.opendaylight.openflow.protocol.rev130731.BarrierInput;
  19 import org.opendaylight.yang.gen.v1.urn.opendaylight.openflow.protocol.rev130731.BarrierOutput;
  20 import org.opendaylight.yang.gen.v1.urn.opendaylight.openflow.protocol.rev130731.EchoInput;
  21 import org.opendaylight.yang.gen.v1.urn.opendaylight.openflow.protocol.rev130731.EchoOutput;
  22 import org.opendaylight.yang.gen.v1.urn.opendaylight.openflow.protocol.rev130731.EchoReplyInput;
  23 import org.opendaylight.yang.gen.v1.urn.opendaylight.openflow.protocol.rev130731.EchoRequestMessage;
  24 import org.opendaylight.yang.gen.v1.urn.opendaylight.openflow.protocol.rev130731.ErrorMessage;
  25 import org.opendaylight.yang.gen.v1.urn.opendaylight.openflow.protocol.rev130731.ExperimenterInput;
  26 import org.opendaylight.yang.gen.v1.urn.opendaylight.openflow.protocol.rev130731.ExperimenterMessage;
  27 import org.opendaylight.yang.gen.v1.urn.opendaylight.openflow.protocol.rev130731.FlowModInput;
  28 import org.opendaylight.yang.gen.v1.urn.opendaylight.openflow.protocol.rev130731.FlowRemovedMessage;
  29 import org.opendaylight.yang.gen.v1.urn.opendaylight.openflow.protocol.rev130731.GetAsyncInput;
  30 import org.opendaylight.yang.gen.v1.urn.opendaylight.openflow.protocol.rev130731.GetAsyncOutput;
  31 import org.opendaylight.yang.gen.v1.urn.opendaylight.openflow.protocol.rev130731.GetConfigInput;
  32 import org.opendaylight.yang.gen.v1.urn.opendaylight.openflow.protocol.rev130731.GetConfigOutput;
  33 import org.opendaylight.yang.gen.v1.urn.opendaylight.openflow.protocol.rev130731.GetFeaturesInput;
  34 import org.opendaylight.yang.gen.v1.urn.opendaylight.openflow.protocol.rev130731.GetFeaturesOutput;
  35 import org.opendaylight.yang.gen.v1.urn.opendaylight.openflow.protocol.rev130731.GetQueueConfigInput;
  36 import org.opendaylight.yang.gen.v1.urn.opendaylight.openflow.protocol.rev130731.GetQueueConfigOutput;
  37 import org.opendaylight.yang.gen.v1.urn.opendaylight.openflow.protocol.rev130731.GroupModInput;
  38 import org.opendaylight.yang.gen.v1.urn.opendaylight.openflow.protocol.rev130731.HelloInput;
  39 import org.opendaylight.yang.gen.v1.urn.opendaylight.openflow.protocol.rev130731.HelloMessage;
  40 import org.opendaylight.yang.gen.v1.urn.opendaylight.openflow.protocol.rev130731.MeterModInput;
  41 import org.opendaylight.yang.gen.v1.urn.opendaylight.openflow.protocol.rev130731.MultipartReplyMessage;
  42 import org.opendaylight.yang.gen.v1.urn.opendaylight.openflow.protocol.rev130731.MultipartRequestMessage;
  43 import org.opendaylight.yang.gen.v1.urn.opendaylight.openflow.protocol.rev130731.OfHeader;
  44 import org.opendaylight.yang.gen.v1.urn.opendaylight.openflow.protocol.rev130731.OpenflowProtocolListener;
  45 import org.opendaylight.yang.gen.v1.urn.opendaylight.openflow.protocol.rev130731.PacketInMessage;
  46 import org.opendaylight.yang.gen.v1.urn.opendaylight.openflow.protocol.rev130731.PacketOutInput;
  47 import org.opendaylight.yang.gen.v1.urn.opendaylight.openflow.protocol.rev130731.PortModInput;
  48 import org.opendaylight.yang.gen.v1.urn.opendaylight.openflow.protocol.rev130731.PortStatusMessage;
  49 import org.opendaylight.yang.gen.v1.urn.opendaylight.openflow.protocol.rev130731.RoleRequestInput;
  50 import org.opendaylight.yang.gen.v1.urn.opendaylight.openflow.protocol.rev130731.RoleRequestOutput;
  51 import org.opendaylight.yang.gen.v1.urn.opendaylight.openflow.protocol.rev130731.SetAsyncInput;
  52 import org.opendaylight.yang.gen.v1.urn.opendaylight.openflow.protocol.rev130731.SetConfigInput;
  53 import org.opendaylight.yang.gen.v1.urn.opendaylight.openflow.protocol.rev130731.TableModInput;
  54 import org.opendaylight.yang.gen.v1.urn.opendaylight.openflow.system.rev130927.DisconnectEvent;
  55 import org.opendaylight.yang.gen.v1.urn.opendaylight.openflow.system.rev130927.SwitchIdleEvent;
  56 import org.opendaylight.yang.gen.v1.urn.opendaylight.openflow.system.rev130927.SystemNotificationsListener;
  57 import org.opendaylight.yangtools.yang.binding.DataContainer;
  58 import org.opendaylight.yangtools.yang.binding.DataObject;
  59 import org.opendaylight.yangtools.yang.binding.Notification;
  60 import org.opendaylight.yangtools.yang.common.RpcError;
  61 import org.opendaylight.yangtools.yang.common.RpcError.ErrorSeverity;
  62 import org.opendaylight.yangtools.yang.common.RpcError.ErrorType;
  63 import org.opendaylight.yangtools.yang.common.RpcResult;
  64 import org.slf4j.Logger;
  65 import org.slf4j.LoggerFactory;
  66
  67 import com.google.common.cache.Cache;
  68 import com.google.common.cache.CacheBuilder;
  69 import com.google.common.cache.RemovalListener;
  70 import com.google.common.cache.RemovalNotification;
  71 import com.google.common.collect.Lists;
  72 import com.google.common.util.concurrent.SettableFuture;
  73
  74 /**
  75  * @author mirehak
  76  * @author michal.polkorab
  77  */
  78 public class ConnectionAdapterImpl implements ConnectionFacade {
  79
  80     /** after this time, rpc future response objects will be thrown away (in minutes) */
  81     public static final int RPC_RESPONSE_EXPIRATION = 1;
  82
  83     protected static final Logger LOG = LoggerFactory
  84             .getLogger(ConnectionAdapterImpl.class);
  85
  86     private static final String APPLICATION_TAG = "OPENFLOW_LIBRARY";
  87     private static final String TAG = "OPENFLOW";
  88     private Channel channel;
  89     private OpenflowProtocolListener messageListener;
  90     /** expiring cache for future rpcResponses */
  91     protected Cache<RpcResponseKey, SettableFuture<?>> responseCache;
  92     private SystemNotificationsListener systemListener;
  93     private boolean disconnectOccured = false;
  94
  95     protected ConnectionReadyListener connectionReadyListener;
  96
  97     /**
  98      * default ctor
  99      */
 100     public ConnectionAdapterImpl() {
 101         responseCache = CacheBuilder.newBuilder()
 102                 .concurrencyLevel(1)
 103                 .expireAfterWrite(RPC_RESPONSE_EXPIRATION, TimeUnit.MINUTES)
 104                 .removalListener(new ResponseRemovalListener()).build();
 105         LOG.info("ConnectionAdapter created");
 106     }
 107
 108     /**
 109      * @param channel the channel to be set - used for communication
 110      */
 111     public void setChannel(Channel channel) {
 112         this.channel = channel;
 113     }
 114
 115     @Override
 116     public Future<RpcResult<BarrierOutput>> barrier(BarrierInput input) {
 117         return sendToSwitchExpectRpcResultFuture(
 118                 input, BarrierOutput.class, "barrier-input sending failed");
 119     }
 120
 121     @Override
 122     public Future<RpcResult<EchoOutput>> echo(EchoInput input) {
 123         return sendToSwitchExpectRpcResultFuture(
 124                 input, EchoOutput.class, "echo-input sending failed");
 125     }
 126
 127     @Override
 128     public Future<RpcResult<Void>> echoReply(EchoReplyInput input) {
 129         return sendToSwitchFuture(input, "echo-reply sending failed");
 130     }
 131
 132     @Override
 133     public Future<RpcResult<Void>> experimenter(ExperimenterInput input) {
 134         return sendToSwitchFuture(input, "experimenter sending failed");
 135     }
 136
 137     @Override
 138     public Future<RpcResult<Void>> flowMod(FlowModInput input) {
 139         return sendToSwitchFuture(input, "flow-mod sending failed");
 140     }
 141
 142     @Override
 143     public Future<RpcResult<GetConfigOutput>> getConfig(GetConfigInput input) {
 144         return sendToSwitchExpectRpcResultFuture(
 145                 input, GetConfigOutput.class, "get-config-input sending failed");
 146     }
 147
 148     @Override
 149     public Future<RpcResult<GetFeaturesOutput>> getFeatures(
 150             GetFeaturesInput input) {
 151         return sendToSwitchExpectRpcResultFuture(
 152                 input, GetFeaturesOutput.class, "get-features-input sending failed");
 153     }
 154
 155     @Override
 156     public Future<RpcResult<GetQueueConfigOutput>> getQueueConfig(
 157             GetQueueConfigInput input) {
 158         return sendToSwitchExpectRpcResultFuture(
 159                 input, GetQueueConfigOutput.class, "get-queue-config-input sending failed");
 160     }
 161
 162     @Override
 163     public Future<RpcResult<Void>> groupMod(GroupModInput input) {
 164         return sendToSwitchFuture(input, "group-mod-input sending failed");
 165     }
 166
 167     @Override
 168     public Future<RpcResult<Void>> hello(HelloInput input) {
 169         return sendToSwitchFuture(input, "hello-input sending failed");
 170     }
 171
 172     @Override
 173     public Future<RpcResult<Void>> meterMod(MeterModInput input) {
 174         return sendToSwitchFuture(input, "meter-mod-input sending failed");
 175     }
 176
 177     @Override
 178     public Future<RpcResult<Void>> packetOut(PacketOutInput input) {
 179         return sendToSwitchFuture(input, "packet-out-input sending failed");
 180     }
 181
 182     @Override
 183     public Future<RpcResult<Void>> portMod(PortModInput input) {
 184         return sendToSwitchFuture(input, "port-mod-input sending failed");
 185     }
 186
 187     @Override
 188     public Future<RpcResult<RoleRequestOutput>> roleRequest(
 189             RoleRequestInput input) {
 190         return sendToSwitchExpectRpcResultFuture(
 191                 input, RoleRequestOutput.class, "role-request-config-input sending failed");
 192     }
 193
 194     @Override
 195     public Future<RpcResult<Void>> setConfig(SetConfigInput input) {
 196         return sendToSwitchFuture(input, "set-config-input sending failed");
 197     }
 198
 199     @Override
 200     public Future<RpcResult<Void>> tableMod(TableModInput input) {
 201         return sendToSwitchFuture(input, "table-mod-input sending failed");
 202     }
 203
 204     @Override
 205     public Future<RpcResult<GetAsyncOutput>> getAsync(GetAsyncInput input) {
 206         return sendToSwitchExpectRpcResultFuture(
 207                 input, GetAsyncOutput.class, "get-async-input sending failed");
 208     }
 209
 210     @Override
 211     public Future<RpcResult<Void>> setAsync(SetAsyncInput input) {
 212         return sendToSwitchFuture(input, "set-async-input sending failed");
 213     }
 214
 215     @Override
 216     public Future<Boolean> disconnect() {
 217         ChannelFuture disconnectResult = channel.disconnect();
 218         responseCache.invalidateAll();
 219         disconnectOccured = true;
 220
 221         String failureInfo = "switch disconnecting failed";
 222         ErrorSeverity errorSeverity = ErrorSeverity.ERROR;
 223         String message = "Check the switch connection";
 224         return handleTransportChannelFuture(disconnectResult, failureInfo, errorSeverity, message);
 225     }
 226
 227     @Override
 228     public boolean isAlive() {
 229         return channel.isOpen();
 230     }
 231
 232     @Override
 233     public void setMessageListener(OpenflowProtocolListener messageListener) {
 234         this.messageListener = messageListener;
 235     }
 236
 237     @Override
 238     public void consume(DataObject message) {
 239         LOG.debug("ConsumeIntern msg");
 240         if (disconnectOccured ) {
 241             return;
 242         }
 243         if (message instanceof Notification) {
 244             // System events
 245             if (message instanceof DisconnectEvent) {
 246                 systemListener.onDisconnectEvent((DisconnectEvent) message);
 247                 responseCache.invalidateAll();
 248                 disconnectOccured = true;
 249             } else if (message instanceof SwitchIdleEvent) {
 250                 systemListener.onSwitchIdleEvent((SwitchIdleEvent) message);
 251             }
 252             // OpenFlow messages
 253               else if (message instanceof EchoRequestMessage) {
 254                 messageListener.onEchoRequestMessage((EchoRequestMessage) message);
 255             } else if (message instanceof ErrorMessage) {
 256                 messageListener.onErrorMessage((ErrorMessage) message);
 257             } else if (message instanceof ExperimenterMessage) {
 258                 messageListener.onExperimenterMessage((ExperimenterMessage) message);
 259             } else if (message instanceof FlowRemovedMessage) {
 260                 messageListener.onFlowRemovedMessage((FlowRemovedMessage) message);
 261             } else if (message instanceof HelloMessage) {
 262                 LOG.info("Hello received / branch");
 263                 messageListener.onHelloMessage((HelloMessage) message);
 264             } else if (message instanceof MultipartReplyMessage) {
 265                 messageListener.onMultipartReplyMessage((MultipartReplyMessage) message);
 266             } else if (message instanceof MultipartRequestMessage) {
 267                 messageListener.onMultipartRequestMessage((MultipartRequestMessage) message);
 268             } else if (message instanceof PacketInMessage) {
 269                 messageListener.onPacketInMessage((PacketInMessage) message);
 270             } else if (message instanceof PortStatusMessage) {
 271                 messageListener.onPortStatusMessage((PortStatusMessage) message);
 272             } else {
 273                 LOG.warn("message listening not supported for type: "+message.getClass());
 274             }
 275         } else {
 276             if (message instanceof OfHeader) {
 277                 LOG.debug("OFheader msg received");
 278                 RpcResponseKey key = createRpcResponseKey((OfHeader) message);
 279                 final SettableFuture<RpcResult<?>> rpcFuture = findRpcResponse(key);
 280                 if (rpcFuture != null) {
 281                     LOG.debug("corresponding rpcFuture found");
 282                     List<RpcError> errors = Collections.emptyList();
 283                     LOG.debug("before setting rpcFuture");
 284                     rpcFuture.set(Rpcs.getRpcResult(true, message, errors));
 285                     LOG.debug("after setting rpcFuture");
 286                     responseCache.invalidate(key);
 287                 } else {
 288                     LOG.warn("received unexpected rpc response: "+key);
 289                 }
 290             } else {
 291                 LOG.warn("message listening not supported for type: "+message.getClass());
 292             }
 293         }
 294     }
 295
 296     /**
 297      * sends given message to switch, sending result will be reported via return value
 298      * @param input message to send
 299      * @param failureInfo describes, what type of message caused failure by sending
 300      * @return future object, <ul>
 301      *  <li>if send successful, {@link RpcResult} without errors and successful
 302      *  status will be returned, </li>
 303      *  <li>else {@link RpcResult} will contain errors and failed status</li>
 304      *  </ul>
 305      */
 306     private SettableFuture<RpcResult<Void>> sendToSwitchFuture(
 307             DataObject input, final String failureInfo) {
 308         LOG.debug("going to flush");
 309         ChannelFuture resultFuture = channel.writeAndFlush(input);
 310         LOG.debug("flushed");
 311
 312         ErrorSeverity errorSeverity = ErrorSeverity.ERROR;
 313         String errorMessage = "check switch connection";
 314         return handleRpcChannelFuture(resultFuture, failureInfo, errorSeverity, errorMessage);
 315     }
 316
 317     /**
 318      * sends given message to switch, sending result or switch response will be reported via return value
 319      * @param input message to send
 320      * @param responseClazz type of response
 321      * @param failureInfo describes, what type of message caused failure by sending
 322      * @return future object, <ul>
 323      *  <li>if send fails, {@link RpcResult} will contain errors and failed status </li>
 324      *  <li>else {@link RpcResult} will be stored in responseCache and wait for particular timeout
 325      *  ({@link ConnectionAdapterImpl#RPC_RESPONSE_EXPIRATION}),
 326      *  <ul><li>either switch will manage to answer
 327      *  and then corresponding response message will be set into returned future</li>
 328      *  <li>or response in cache will expire and returned future will be cancelled</li></ul>
 329      *  </li>
 330      *  </ul>
 331      */
 332     private <IN extends OfHeader, OUT extends OfHeader> SettableFuture<RpcResult<OUT>> sendToSwitchExpectRpcResultFuture(
 333             IN input, Class<OUT> responseClazz, final String failureInfo) {
 334         LOG.debug("going to flush");
 335         SettableFuture<RpcResult<OUT>> rpcResult = SettableFuture.create();
 336         RpcResponseKey key = new RpcResponseKey(input.getXid(), responseClazz);
 337         responseCache.put(key, rpcResult);
 338         ChannelFuture resultFuture = channel.writeAndFlush(input);
 339         LOG.debug("flushed");
 340
 341         ErrorSeverity errorSeverity = ErrorSeverity.ERROR;
 342         String errorMessage = "check switch connection";
 343
 344         return handleRpcChannelFutureWithResponse(resultFuture, failureInfo, errorSeverity,
 345                 errorMessage, input, responseClazz, rpcResult, key);
 346     }
 347
 348     /**
 349      * @param resultFuture
 350      * @param failureInfo
 351      * @return
 352      */
 353     private SettableFuture<RpcResult<Void>> handleRpcChannelFuture(
 354             ChannelFuture resultFuture, final String failureInfo,
 355             final ErrorSeverity errorSeverity, final String errorMessage) {
 356
 357         final SettableFuture<RpcResult<Void>> rpcResult = SettableFuture.create();
 358         LOG.debug("handlerpcchannelfuture");
 359         resultFuture.addListener(new GenericFutureListener<io.netty.util.concurrent.Future<? super Void>>() {
 360
 361             @Override
 362             public void operationComplete(
 363                     io.netty.util.concurrent.Future<? super Void> future)
 364                     throws Exception {
 365                 LOG.debug("operation complete");
 366                 Collection<RpcError> errors = Collections.emptyList();
 367
 368                 if (future.cause() != null) {
 369                     LOG.debug("future.cause != null");
 370                     RpcError rpcError = buildRpcError(failureInfo,
 371                             errorSeverity, errorMessage, future.cause());
 372                     errors = Lists.newArrayList(rpcError);
 373                 }
 374
 375                 rpcResult.set(Rpcs.getRpcResult(
 376                         future.isSuccess(),
 377                         (Void) null,
 378                         errors)
 379                 );
 380             }
 381         });
 382         return rpcResult;
 383     }
 384
 385     /**
 386      * @param resultFuture
 387      * @param failureInfo
 388      * @param errorSeverity
 389      * @param errorMessage
 390      * @param input
 391      * @param responseClazz
 392      * @param key of rpcResponse
 393      * @return
 394      */
 395     private <IN extends OfHeader, OUT extends OfHeader> SettableFuture<RpcResult<OUT>> handleRpcChannelFutureWithResponse(
 396             ChannelFuture resultFuture, final String failureInfo,
 397             final ErrorSeverity errorSeverity, final String errorMessage,
 398             final IN input, Class<OUT> responseClazz, final SettableFuture<RpcResult<OUT>> rpcResult, final RpcResponseKey key) {
 399         LOG.debug("handleRpcchanfuture with response");
 400
 401         resultFuture.addListener(new GenericFutureListener<io.netty.util.concurrent.Future<? super Void>>() {
 402
 403             @Override
 404             public void operationComplete(
 405                     io.netty.util.concurrent.Future<? super Void> future)
 406                     throws Exception {
 407
 408                 LOG.debug("operation complete");
 409                 Collection<RpcError> errors = Collections.emptyList();
 410                 if (future.cause() != null) {
 411                     LOG.debug("ChannelFuture.cause != null");
 412                     RpcError rpcError = buildRpcError(failureInfo,
 413                             errorSeverity, errorMessage, future.cause());
 414                     errors = Lists.newArrayList(rpcError);
 415                     rpcResult.set(Rpcs.getRpcResult(
 416                             future.isSuccess(),
 417                             (OUT) null,
 418                             errors)
 419                             );
 420                     responseCache.invalidate(key);
 421                 } else {
 422                     LOG.debug("ChannelFuture.cause == null");
 423                     if (responseCache.getIfPresent(key) == null) {
 424                         LOG.debug("responcache: key wasn't present");
 425                     }
 426                 }
 427             }
 428         });
 429         return rpcResult;
 430     }
 431
 432     /**
 433      * @param resultFuture
 434      * @param failureInfo
 435      * @param errorSeverity
 436      * @param message
 437      * @return
 438      */
 439     private static SettableFuture<Boolean> handleTransportChannelFuture(
 440             ChannelFuture resultFuture, final String failureInfo,
 441             final ErrorSeverity errorSeverity, final String message) {
 442
 443         final SettableFuture<Boolean> transportResult = SettableFuture.create();
 444
 445         resultFuture.addListener(new GenericFutureListener<io.netty.util.concurrent.Future<? super Void>>() {
 446
 447             @Override
 448             public void operationComplete(
 449                     io.netty.util.concurrent.Future<? super Void> future)
 450                     throws Exception {
 451                 transportResult.set(future.isSuccess());
 452                 if (!future.isSuccess()) {
 453                     transportResult.setException(future.cause());
 454                 }
 455             }
 456         });
 457         return transportResult;
 458     }
 459
 460     /**
 461      * @param cause
 462      * @return
 463      */
 464     protected RpcError buildRpcError(String info, ErrorSeverity severity, String message,
 465             Throwable cause) {
 466         RpcError error = RpcErrors.getRpcError(APPLICATION_TAG, TAG, info, severity, message,
 467                 ErrorType.RPC, cause);
 468         return error;
 469     }
 470
 471     /**
 472      * @param cause
 473      * @return
 474      */
 475     protected RpcError buildTransportError(String info, ErrorSeverity severity, String message,
 476             Throwable cause) {
 477         RpcError error = RpcErrors.getRpcError(APPLICATION_TAG, TAG, info, severity, message,
 478                 ErrorType.TRANSPORT, cause);
 479         return error;
 480     }
 481
 482     /**
 483      * @param message
 484      * @return
 485      */
 486     private static RpcResponseKey createRpcResponseKey(OfHeader message) {
 487         return new RpcResponseKey(message.getXid(), message.getClass());
 488     }
 489
 490     /**
 491      * @return
 492      */
 493     @SuppressWarnings("unchecked")
 494     private SettableFuture<RpcResult<?>> findRpcResponse(RpcResponseKey key) {
 495         return (SettableFuture<RpcResult<?>>) responseCache.getIfPresent(key);
 496     }
 497
 498     @Override
 499     public void setSystemListener(SystemNotificationsListener systemListener) {
 500         this.systemListener = systemListener;
 501     }
 502
 503     @Override
 504     public void checkListeners() {
 505         StringBuffer buffer =  new StringBuffer();
 506         if (systemListener == null) {
 507             buffer.append("SystemListener ");
 508         }
 509         if (messageListener == null) {
 510             buffer.append("MessageListener ");
 511         }
 512         if (connectionReadyListener == null) {
 513             buffer.append("ConnectionReadyListener ");
 514         }
 515
 516         if (buffer.length() > 0) {
 517             throw new IllegalStateException("Missing listeners: " + buffer.toString());
 518         }
 519     }
 520
 521     static class ResponseRemovalListener implements RemovalListener<RpcResponseKey, SettableFuture<?>> {
 522         @Override
 523         public void onRemoval(
 524                 RemovalNotification<RpcResponseKey, SettableFuture<?>> notification) {
 525             SettableFuture<?> future = notification.getValue();
 526             if (!future.isDone()) {
 527                 LOG.warn("rpc response discarded: " + notification.getKey());
 528                 future.cancel(true);
 529             }
 530         }
 531     }
 532
 533     /**
 534      * Class is used ONLY for exiting msgQueue processing thread
 535      * @author michal.polkorab
 536      */
 537     static class ExitingDataObject implements DataObject {
 538         @Override
 539         public Class<? extends DataContainer> getImplementedInterface() {
 540             return null;
 541         }
 542     }
 543
 544     @Override
 545     public void fireConnectionReadyNotification() {
 546         new Thread(new Runnable() {
 547             @Override
 548             public void run() {
 549                 connectionReadyListener.onConnectionReady();
 550             }
 551         }).start();
 552     }
 553
 554
 555     @Override
 556     public void setConnectionReadyListener(
 557             ConnectionReadyListener connectionReadyListener) {
 558         this.connectionReadyListener = connectionReadyListener;
 559     }
 560
 561 }