applications/forwardingrules-manager/src/main/java/org/opendaylight/openflowplugin/applications/frm/impl/FlowForwarder.java

   1 /*
   2  * Copyright (c) 2014, 2017 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 package org.opendaylight.openflowplugin.applications.frm.impl;
   9
  10 import static org.opendaylight.openflowplugin.applications.frm.util.FrmUtil.buildGroupInstanceIdentifier;
  11 import static org.opendaylight.openflowplugin.applications.frm.util.FrmUtil.getActiveBundle;
  12 import static org.opendaylight.openflowplugin.applications.frm.util.FrmUtil.getFlowId;
  13 import static org.opendaylight.openflowplugin.applications.frm.util.FrmUtil.getNodeIdFromNodeIdentifier;
  14 import static org.opendaylight.openflowplugin.applications.frm.util.FrmUtil.isFlowDependentOnGroup;
  15 import static org.opendaylight.openflowplugin.applications.frm.util.FrmUtil.isGroupExistsOnDevice;
  16
  17 import com.google.common.base.Preconditions;
  18 import com.google.common.util.concurrent.FluentFuture;
  19 import com.google.common.util.concurrent.FutureCallback;
  20 import com.google.common.util.concurrent.Futures;
  21 import com.google.common.util.concurrent.ListenableFuture;
  22 import com.google.common.util.concurrent.MoreExecutors;
  23 import com.google.common.util.concurrent.SettableFuture;
  24 import java.util.Optional;
  25 import java.util.concurrent.ExecutionException;
  26 import java.util.concurrent.Future;
  27 import org.opendaylight.infrautils.utils.concurrent.LoggingFutures;
  28 import org.opendaylight.mdsal.binding.api.DataBroker;
  29 import org.opendaylight.mdsal.binding.api.DataTreeIdentifier;
  30 import org.opendaylight.mdsal.binding.api.ReadTransaction;
  31 import org.opendaylight.mdsal.binding.api.WriteTransaction;
  32 import org.opendaylight.mdsal.common.api.LogicalDatastoreType;
  33 import org.opendaylight.openflowplugin.applications.frm.ForwardingRulesManager;
  34 import org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.inet.types.rev130715.Uri;
  35 import org.opendaylight.yang.gen.v1.urn.opendaylight.flow.inventory.rev130819.FlowCapableNode;
  36 import org.opendaylight.yang.gen.v1.urn.opendaylight.flow.inventory.rev130819.FlowId;
  37 import org.opendaylight.yang.gen.v1.urn.opendaylight.flow.inventory.rev130819.tables.Table;
  38 import org.opendaylight.yang.gen.v1.urn.opendaylight.flow.inventory.rev130819.tables.TableKey;
  39 import org.opendaylight.yang.gen.v1.urn.opendaylight.flow.inventory.rev130819.tables.table.Flow;
  40 import org.opendaylight.yang.gen.v1.urn.opendaylight.flow.inventory.rev130819.tables.table.StaleFlow;
  41 import org.opendaylight.yang.gen.v1.urn.opendaylight.flow.inventory.rev130819.tables.table.StaleFlowBuilder;
  42 import org.opendaylight.yang.gen.v1.urn.opendaylight.flow.inventory.rev130819.tables.table.StaleFlowKey;
  43 import org.opendaylight.yang.gen.v1.urn.opendaylight.flow.service.rev130819.AddFlowInput;
  44 import org.opendaylight.yang.gen.v1.urn.opendaylight.flow.service.rev130819.AddFlowInputBuilder;
  45 import org.opendaylight.yang.gen.v1.urn.opendaylight.flow.service.rev130819.AddFlowOutput;
  46 import org.opendaylight.yang.gen.v1.urn.opendaylight.flow.service.rev130819.FlowTableRef;
  47 import org.opendaylight.yang.gen.v1.urn.opendaylight.flow.service.rev130819.RemoveFlowInputBuilder;
  48 import org.opendaylight.yang.gen.v1.urn.opendaylight.flow.service.rev130819.RemoveFlowOutput;
  49 import org.opendaylight.yang.gen.v1.urn.opendaylight.flow.service.rev130819.UpdateFlowInput;
  50 import org.opendaylight.yang.gen.v1.urn.opendaylight.flow.service.rev130819.UpdateFlowInputBuilder;
  51 import org.opendaylight.yang.gen.v1.urn.opendaylight.flow.service.rev130819.UpdateFlowOutput;
  52 import org.opendaylight.yang.gen.v1.urn.opendaylight.flow.service.rev130819.flow.update.OriginalFlowBuilder;
  53 import org.opendaylight.yang.gen.v1.urn.opendaylight.flow.service.rev130819.flow.update.UpdatedFlowBuilder;
  54 import org.opendaylight.yang.gen.v1.urn.opendaylight.flow.types.rev131026.FlowRef;
  55 import org.opendaylight.yang.gen.v1.urn.opendaylight.group.service.rev130918.AddGroupInput;
  56 import org.opendaylight.yang.gen.v1.urn.opendaylight.group.service.rev130918.AddGroupInputBuilder;
  57 import org.opendaylight.yang.gen.v1.urn.opendaylight.group.service.rev130918.AddGroupOutput;
  58 import org.opendaylight.yang.gen.v1.urn.opendaylight.group.types.rev131018.GroupRef;
  59 import org.opendaylight.yang.gen.v1.urn.opendaylight.group.types.rev131018.groups.Group;
  60 import org.opendaylight.yang.gen.v1.urn.opendaylight.inventory.rev130819.NodeId;
  61 import org.opendaylight.yang.gen.v1.urn.opendaylight.inventory.rev130819.NodeRef;
  62 import org.opendaylight.yang.gen.v1.urn.opendaylight.inventory.rev130819.Nodes;
  63 import org.opendaylight.yang.gen.v1.urn.opendaylight.inventory.rev130819.nodes.Node;
  64 import org.opendaylight.yang.gen.v1.urn.opendaylight.openflowplugin.extension.onf.rev170124.BundleId;
  65 import org.opendaylight.yangtools.concepts.ListenerRegistration;
  66 import org.opendaylight.yangtools.yang.binding.InstanceIdentifier;
  67 import org.opendaylight.yangtools.yang.common.RpcError;
  68 import org.opendaylight.yangtools.yang.common.RpcResult;
  69 import org.opendaylight.yangtools.yang.common.RpcResultBuilder;
  70 import org.slf4j.Logger;
  71 import org.slf4j.LoggerFactory;
  72
  73 /**
  74  * FlowForwarder It implements
  75  * {@link org.opendaylight.mdsal.binding.api.DataTreeChangeListener}
  76  * for WildCardedPath to {@link Flow} and ForwardingRulesCommiter interface for
  77  * methods: add, update and remove {@link Flow} processing for
  78  * {@link org.opendaylight.mdsal.binding.api.DataTreeModification}.
  79  */
  80 public class FlowForwarder extends AbstractListeningCommiter<Flow> {
  81
  82     private static final Logger LOG = LoggerFactory.getLogger(FlowForwarder.class);
  83
  84     private static final String GROUP_EXISTS_IN_DEVICE_ERROR = "GROUPEXISTS";
  85
  86     private ListenerRegistration<FlowForwarder> listenerRegistration;
  87
  88     public FlowForwarder(final ForwardingRulesManager manager, final DataBroker db) {
  89         super(manager, db);
  90     }
  91
  92     @Override
  93     @SuppressWarnings("IllegalCatch")
  94     public void registerListener() {
  95         final DataTreeIdentifier<Flow> treeId = DataTreeIdentifier.create(LogicalDatastoreType.CONFIGURATION,
  96                 getWildCardPath());
  97         try {
  98             listenerRegistration = dataBroker.registerDataTreeChangeListener(treeId, FlowForwarder.this);
  99         } catch (final Exception e) {
 100             LOG.warn("FRM Flow DataTreeChange listener registration fail!");
 101             LOG.debug("FRM Flow DataTreeChange listener registration fail ..", e);
 102             throw new IllegalStateException("FlowForwarder startup fail! System needs restart.", e);
 103         }
 104     }
 105
 106
 107     @Override
 108     public  void deregisterListener() {
 109         close();
 110     }
 111
 112     @Override
 113     public void close() {
 114         if (listenerRegistration != null) {
 115             listenerRegistration.close();
 116             listenerRegistration = null;
 117         }
 118     }
 119
 120     @Override
 121     public void remove(final InstanceIdentifier<Flow> identifier, final Flow removeDataObj,
 122             final InstanceIdentifier<FlowCapableNode> nodeIdent) {
 123
 124         final TableKey tableKey = identifier.firstKeyOf(Table.class);
 125         if (tableIdValidationPrecondition(tableKey, removeDataObj)) {
 126             BundleId bundleId = getActiveBundle(nodeIdent, provider);
 127             if (bundleId != null) {
 128                 provider.getBundleFlowListener().remove(identifier, removeDataObj, nodeIdent, bundleId);
 129             } else {
 130                 final RemoveFlowInputBuilder builder = new RemoveFlowInputBuilder(removeDataObj);
 131                 builder.setFlowRef(new FlowRef(identifier));
 132                 builder.setNode(new NodeRef(nodeIdent.firstIdentifierOf(Node.class)));
 133                 builder.setFlowTable(new FlowTableRef(nodeIdent.child(Table.class, tableKey)));
 134
 135                 // This method is called only when a given flow object has been
 136                 // removed from datastore. So FRM always needs to set strict flag
 137                 // into remove-flow input so that only a flow entry associated with
 138                 // a given flow object is removed.
 139                 builder.setTransactionUri(new Uri(provider.getNewTransactionId())).setStrict(Boolean.TRUE);
 140                 LoggingFutures.addErrorLogging(provider.getSalFlowService().removeFlow(builder.build()), LOG,
 141                     "removeFlow");
 142             }
 143         }
 144     }
 145
 146     // TODO: Pull this into ForwardingRulesCommiter and override it here
 147
 148     @Override
 149     public ListenableFuture<RpcResult<RemoveFlowOutput>> removeWithResult(final InstanceIdentifier<Flow> identifier,
 150             final Flow removeDataObj, final InstanceIdentifier<FlowCapableNode> nodeIdent) {
 151
 152         ListenableFuture<RpcResult<RemoveFlowOutput>> resultFuture = SettableFuture.create();
 153         final TableKey tableKey = identifier.firstKeyOf(Table.class);
 154         if (tableIdValidationPrecondition(tableKey, removeDataObj)) {
 155             final RemoveFlowInputBuilder builder = new RemoveFlowInputBuilder(removeDataObj);
 156             builder.setFlowRef(new FlowRef(identifier));
 157             builder.setNode(new NodeRef(nodeIdent.firstIdentifierOf(Node.class)));
 158             builder.setFlowTable(new FlowTableRef(nodeIdent.child(Table.class, tableKey)));
 159
 160             // This method is called only when a given flow object has been
 161             // removed from datastore. So FRM always needs to set strict flag
 162             // into remove-flow input so that only a flow entry associated with
 163             // a given flow object is removed.
 164             builder.setTransactionUri(new Uri(provider.getNewTransactionId())).setStrict(Boolean.TRUE);
 165             resultFuture = provider.getSalFlowService().removeFlow(builder.build());
 166         }
 167
 168         return resultFuture;
 169     }
 170
 171     @Override
 172     public void update(final InstanceIdentifier<Flow> identifier, final Flow original, final Flow update,
 173             final InstanceIdentifier<FlowCapableNode> nodeIdent) {
 174
 175         final TableKey tableKey = identifier.firstKeyOf(Table.class);
 176         if (tableIdValidationPrecondition(tableKey, update)) {
 177             BundleId bundleId = getActiveBundle(nodeIdent, provider);
 178             if (bundleId != null) {
 179                 provider.getBundleFlowListener().update(identifier, original, update, nodeIdent, bundleId);
 180             } else {
 181                 final NodeId nodeId = getNodeIdFromNodeIdentifier(nodeIdent);
 182                 nodeConfigurator.enqueueJob(nodeId.getValue(), () -> {
 183                     final UpdateFlowInputBuilder builder = new UpdateFlowInputBuilder();
 184                     builder.setNode(new NodeRef(nodeIdent.firstIdentifierOf(Node.class)));
 185                     builder.setFlowRef(new FlowRef(identifier));
 186                     builder.setTransactionUri(new Uri(provider.getNewTransactionId()));
 187
 188                     // This method is called only when a given flow object in datastore
 189                     // has been updated. So FRM always needs to set strict flag into
 190                     // update-flow input so that only a flow entry associated with
 191                     // a given flow object is updated.
 192                     builder.setUpdatedFlow(new UpdatedFlowBuilder(update).setStrict(Boolean.TRUE).build());
 193                     builder.setOriginalFlow(new OriginalFlowBuilder(original).setStrict(Boolean.TRUE).build());
 194
 195                     Long groupId = isFlowDependentOnGroup(update);
 196                     if (groupId != null) {
 197                         LOG.trace("The flow {} is dependent on group {}. Checking if the group is already present",
 198                                 getFlowId(new FlowRef(identifier)), groupId);
 199                         if (isGroupExistsOnDevice(nodeIdent, groupId, provider)) {
 200                             LOG.trace("The dependent group {} is already programmed. Updating the flow {}", groupId,
 201                                     getFlowId(new FlowRef(identifier)));
 202                             return provider.getSalFlowService().updateFlow(builder.build());
 203                         } else {
 204                             LOG.trace("The dependent group {} isn't programmed yet. Pushing the group", groupId);
 205                             ListenableFuture<RpcResult<AddGroupOutput>> groupFuture = pushDependentGroup(nodeIdent,
 206                                     groupId);
 207                             SettableFuture<RpcResult<UpdateFlowOutput>> resultFuture = SettableFuture.create();
 208                             Futures.addCallback(groupFuture,
 209                                     new UpdateFlowCallBack(builder.build(), nodeId, resultFuture, groupId),
 210                                     MoreExecutors.directExecutor());
 211                             return resultFuture;
 212                         }
 213                     }
 214
 215                     LOG.trace("The flow {} is not dependent on any group. Updating the flow",
 216                             getFlowId(new FlowRef(identifier)));
 217                     return provider.getSalFlowService().updateFlow(builder.build());
 218                 });
 219             }
 220         }
 221     }
 222
 223     @Override
 224     public Future<? extends RpcResult<?>> add(final InstanceIdentifier<Flow> identifier, final Flow addDataObj,
 225             final InstanceIdentifier<FlowCapableNode> nodeIdent) {
 226
 227         final TableKey tableKey = identifier.firstKeyOf(Table.class);
 228         if (tableIdValidationPrecondition(tableKey, addDataObj)) {
 229             BundleId bundleId = getActiveBundle(nodeIdent, provider);
 230             if (bundleId != null) {
 231                 return provider.getBundleFlowListener().add(identifier, addDataObj, nodeIdent, bundleId);
 232             } else {
 233                 final NodeId nodeId = getNodeIdFromNodeIdentifier(nodeIdent);
 234                 nodeConfigurator.enqueueJob(nodeId.getValue(), () -> {
 235                     final AddFlowInputBuilder builder = new AddFlowInputBuilder(addDataObj);
 236
 237                     builder.setNode(new NodeRef(nodeIdent.firstIdentifierOf(Node.class)));
 238                     builder.setFlowRef(new FlowRef(identifier));
 239                     builder.setFlowTable(new FlowTableRef(nodeIdent.child(Table.class, tableKey)));
 240                     builder.setTransactionUri(new Uri(provider.getNewTransactionId()));
 241                     Long groupId = isFlowDependentOnGroup(addDataObj);
 242                     if (groupId != null) {
 243                         LOG.trace("The flow {} is dependent on group {}. Checking if the group is already present",
 244                                 getFlowId(new FlowRef(identifier)), groupId);
 245                         if (isGroupExistsOnDevice(nodeIdent, groupId, provider)) {
 246                             LOG.trace("The dependent group {} is already programmed. Adding the flow {}", groupId,
 247                                     getFlowId(new FlowRef(identifier)));
 248                             return provider.getSalFlowService().addFlow(builder.build());
 249                         } else {
 250                             LOG.trace("The dependent group {} isn't programmed yet. Pushing the group", groupId);
 251                             ListenableFuture<RpcResult<AddGroupOutput>> groupFuture = pushDependentGroup(nodeIdent,
 252                                     groupId);
 253                             SettableFuture<RpcResult<AddFlowOutput>> resultFuture = SettableFuture.create();
 254                             Futures.addCallback(groupFuture, new AddFlowCallBack(builder.build(), nodeId, groupId,
 255                                     resultFuture), MoreExecutors.directExecutor());
 256                             return resultFuture;
 257                         }
 258                     }
 259
 260                     LOG.trace("The flow {} is not dependent on any group. Adding the flow",
 261                             getFlowId(new FlowRef(identifier)));
 262                     return provider.getSalFlowService().addFlow(builder.build());
 263                 });
 264             }
 265         }
 266         return Futures.immediateFuture(null);
 267     }
 268
 269     @Override
 270     public void createStaleMarkEntity(InstanceIdentifier<Flow> identifier, Flow del,
 271             InstanceIdentifier<FlowCapableNode> nodeIdent) {
 272         LOG.debug("Creating Stale-Mark entry for the switch {} for flow {} ", nodeIdent.toString(), del.toString());
 273         StaleFlow staleFlow = makeStaleFlow(identifier, del, nodeIdent);
 274         persistStaleFlow(staleFlow, nodeIdent);
 275     }
 276
 277     @Override
 278     protected InstanceIdentifier<Flow> getWildCardPath() {
 279         return InstanceIdentifier.create(Nodes.class).child(Node.class).augmentation(FlowCapableNode.class)
 280                 .child(Table.class).child(Flow.class);
 281     }
 282
 283     private static boolean tableIdValidationPrecondition(final TableKey tableKey, final Flow flow) {
 284         Preconditions.checkNotNull(tableKey, "TableKey can not be null or empty!");
 285         Preconditions.checkNotNull(flow, "Flow can not be null or empty!");
 286         if (!tableKey.getId().equals(flow.getTableId())) {
 287             LOG.warn("TableID in URI tableId={} and in palyload tableId={} is not same.", flow.getTableId(),
 288                     tableKey.getId());
 289             return false;
 290         }
 291         return true;
 292     }
 293
 294     private StaleFlow makeStaleFlow(InstanceIdentifier<Flow> identifier, Flow del,
 295             InstanceIdentifier<FlowCapableNode> nodeIdent) {
 296         StaleFlowBuilder staleFlowBuilder = new StaleFlowBuilder(del);
 297         return staleFlowBuilder.setId(del.getId()).build();
 298     }
 299
 300     private void persistStaleFlow(StaleFlow staleFlow, InstanceIdentifier<FlowCapableNode> nodeIdent) {
 301         WriteTransaction writeTransaction = dataBroker.newWriteOnlyTransaction();
 302         writeTransaction.put(LogicalDatastoreType.CONFIGURATION, getStaleFlowInstanceIdentifier(staleFlow, nodeIdent),
 303                 staleFlow, false);
 304
 305         FluentFuture<?> submitFuture = writeTransaction.commit();
 306         handleStaleFlowResultFuture(submitFuture);
 307     }
 308
 309     private void handleStaleFlowResultFuture(FluentFuture<?> submitFuture) {
 310         submitFuture.addCallback(new FutureCallback<Object>() {
 311             @Override
 312             public void onSuccess(Object result) {
 313                 LOG.debug("Stale Flow creation success");
 314             }
 315
 316             @Override
 317             public void onFailure(Throwable throwable) {
 318                 LOG.error("Stale Flow creation failed", throwable);
 319             }
 320         }, MoreExecutors.directExecutor());
 321
 322     }
 323
 324     private InstanceIdentifier<org.opendaylight.yang.gen.v1.urn.opendaylight
 325         .flow.inventory.rev130819.tables.table.StaleFlow> getStaleFlowInstanceIdentifier(
 326             StaleFlow staleFlow, InstanceIdentifier<FlowCapableNode> nodeIdent) {
 327         return nodeIdent.child(Table.class, new TableKey(staleFlow.getTableId())).child(
 328                 org.opendaylight.yang.gen.v1.urn.opendaylight.flow.inventory.rev130819.tables.table.StaleFlow.class,
 329                 new StaleFlowKey(new FlowId(staleFlow.getId())));
 330     }
 331
 332     private ListenableFuture<RpcResult<AddGroupOutput>> pushDependentGroup(
 333             final InstanceIdentifier<FlowCapableNode> nodeIdent, final Long groupId) {
 334
 335         //TODO This read to the DS might have a performance impact.
 336         //if the dependent group is not installed than we should just cache the parent group,
 337         //till we receive the dependent group DTCN and then push it.
 338
 339         InstanceIdentifier<Group> groupIdent = buildGroupInstanceIdentifier(nodeIdent, groupId);
 340         ListenableFuture<RpcResult<AddGroupOutput>> resultFuture;
 341         LOG.info("Reading the group from config inventory: {}", groupId);
 342         try (ReadTransaction readTransaction = provider.getReadTransaction()) {
 343             Optional<Group> group = readTransaction.read(LogicalDatastoreType.CONFIGURATION, groupIdent).get();
 344             if (group.isPresent()) {
 345                 final AddGroupInputBuilder builder = new AddGroupInputBuilder(group.get());
 346                 builder.setNode(new NodeRef(nodeIdent.firstIdentifierOf(Node.class)));
 347                 builder.setGroupRef(new GroupRef(nodeIdent));
 348                 builder.setTransactionUri(new Uri(provider.getNewTransactionId()));
 349                 AddGroupInput addGroupInput = builder.build();
 350                 resultFuture = this.provider.getSalGroupService().addGroup(addGroupInput);
 351             } else {
 352                 resultFuture = Futures.immediateFuture(RpcResultBuilder.<AddGroupOutput>failed()
 353                         .withError(RpcError.ErrorType.APPLICATION,
 354                                 "Group " + groupId + " not present in the config inventory").build());
 355             }
 356         } catch (InterruptedException | ExecutionException e) {
 357             LOG.error("Error while reading group from config datastore for the group ID {}", groupId, e);
 358             resultFuture = Futures.immediateFuture(RpcResultBuilder.<AddGroupOutput>failed()
 359                     .withError(RpcError.ErrorType.APPLICATION,
 360                             "Error while reading group " + groupId + " from inventory").build());
 361         }
 362         return resultFuture;
 363     }
 364
 365     private final class AddFlowCallBack implements FutureCallback<RpcResult<AddGroupOutput>> {
 366         private final AddFlowInput addFlowInput;
 367         private final NodeId nodeId;
 368         private final Long groupId;
 369         private final SettableFuture<RpcResult<AddFlowOutput>> resultFuture;
 370
 371         private AddFlowCallBack(final AddFlowInput addFlowInput, final NodeId nodeId, Long groupId,
 372                 SettableFuture<RpcResult<AddFlowOutput>> resultFuture) {
 373             this.addFlowInput = addFlowInput;
 374             this.nodeId = nodeId;
 375             this.groupId = groupId;
 376             this.resultFuture = resultFuture;
 377         }
 378
 379         @Override
 380         public void onSuccess(RpcResult<AddGroupOutput> rpcResult) {
 381             if (rpcResult.isSuccessful() || rpcResult.getErrors().size() == 1
 382                     && rpcResult.getErrors().iterator().next().getMessage().contains(GROUP_EXISTS_IN_DEVICE_ERROR)) {
 383                 provider.getDevicesGroupRegistry().storeGroup(nodeId, groupId);
 384                 Futures.addCallback(provider.getSalFlowService().addFlow(addFlowInput),
 385                     new FutureCallback<RpcResult<AddFlowOutput>>() {
 386                         @Override
 387                         public void onSuccess(RpcResult<AddFlowOutput> result) {
 388                             resultFuture.set(result);
 389                         }
 390
 391                         @Override
 392                         public void onFailure(Throwable failure) {
 393                             resultFuture.setException(failure);
 394                         }
 395                     },  MoreExecutors.directExecutor());
 396
 397                 LOG.debug("Flow add with id {} finished without error for node {}",
 398                         getFlowId(addFlowInput.getFlowRef()), nodeId);
 399             } else {
 400                 LOG.error("Flow add with id {} failed for node {} with error {}", getFlowId(addFlowInput.getFlowRef()),
 401                         nodeId, rpcResult.getErrors().toString());
 402                 resultFuture.set(RpcResultBuilder.<AddFlowOutput>failed()
 403                         .withRpcErrors(rpcResult.getErrors()).build());
 404             }
 405         }
 406
 407         @Override
 408         public void onFailure(Throwable throwable) {
 409             LOG.error("Service call for adding flow with id {} failed for node {}",
 410                     getFlowId(addFlowInput.getFlowRef()), nodeId, throwable);
 411             resultFuture.setException(throwable);
 412         }
 413     }
 414
 415     private final class UpdateFlowCallBack implements FutureCallback<RpcResult<AddGroupOutput>> {
 416         private final UpdateFlowInput updateFlowInput;
 417         private final NodeId nodeId;
 418         private final Long groupId;
 419         private final SettableFuture<RpcResult<UpdateFlowOutput>> resultFuture;
 420
 421         private UpdateFlowCallBack(final UpdateFlowInput updateFlowInput, final NodeId nodeId,
 422                 SettableFuture<RpcResult<UpdateFlowOutput>> resultFuture, Long groupId) {
 423             this.updateFlowInput = updateFlowInput;
 424             this.nodeId = nodeId;
 425             this.groupId = groupId;
 426             this.resultFuture = resultFuture;
 427         }
 428
 429         @Override
 430         public void onSuccess(RpcResult<AddGroupOutput> rpcResult) {
 431             if (rpcResult.isSuccessful() || rpcResult.getErrors().size() == 1
 432                     && rpcResult.getErrors().iterator().next().getMessage().contains(GROUP_EXISTS_IN_DEVICE_ERROR)) {
 433                 provider.getDevicesGroupRegistry().storeGroup(nodeId, groupId);
 434                 Futures.addCallback(provider.getSalFlowService().updateFlow(updateFlowInput),
 435                     new FutureCallback<RpcResult<UpdateFlowOutput>>() {
 436                         @Override
 437                         public void onSuccess(RpcResult<UpdateFlowOutput> result) {
 438                             resultFuture.set(result);
 439                         }
 440
 441                         @Override
 442                         public void onFailure(Throwable failure) {
 443                             resultFuture.setException(failure);
 444                         }
 445                     },  MoreExecutors.directExecutor());
 446
 447                 LOG.debug("Flow update with id {} finished without error for node {}",
 448                         getFlowId(updateFlowInput.getFlowRef()), nodeId);
 449             } else {
 450                 LOG.error("Flow update with id {} failed for node {} with error {}",
 451                         getFlowId(updateFlowInput.getFlowRef()), nodeId, rpcResult.getErrors().toString());
 452                 resultFuture.set(RpcResultBuilder.<UpdateFlowOutput>failed()
 453                         .withRpcErrors(rpcResult.getErrors()).build());
 454             }
 455         }
 456
 457         @Override
 458         public void onFailure(Throwable throwable) {
 459             LOG.error("Service call for updating flow with id {} failed for node {}",
 460                     getFlowId(updateFlowInput.getFlowRef()), nodeId, throwable);
 461             resultFuture.setException(throwable);
 462         }
 463     }
 464 }