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

   1 /**
   2  * Copyright (c) 2014 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.applications.frm.impl;
  10
  11 import com.google.common.base.Optional;
  12 import com.google.common.base.Preconditions;
  13 import com.google.common.collect.ImmutableList;
  14 import com.google.common.collect.Lists;
  15 import com.google.common.util.concurrent.CheckedFuture;
  16 import com.google.common.util.concurrent.FutureCallback;
  17 import com.google.common.util.concurrent.Futures;
  18 import java.util.ArrayList;
  19 import java.util.Collections;
  20 import java.util.List;
  21 import java.util.ListIterator;
  22 import java.util.Map;
  23 import java.util.Set;
  24 import java.util.concurrent.Callable;
  25 import org.opendaylight.controller.md.sal.binding.api.DataBroker;
  26 import org.opendaylight.controller.md.sal.binding.api.DataChangeListener;
  27 import org.opendaylight.controller.md.sal.binding.api.ReadOnlyTransaction;
  28 import org.opendaylight.controller.md.sal.binding.api.WriteTransaction;
  29 import org.opendaylight.controller.md.sal.common.api.data.AsyncDataBroker.DataChangeScope;
  30 import org.opendaylight.controller.md.sal.common.api.data.AsyncDataChangeEvent;
  31 import org.opendaylight.controller.md.sal.common.api.data.LogicalDatastoreType;
  32 import org.opendaylight.controller.md.sal.common.api.data.TransactionCommitFailedException;
  33 import org.opendaylight.openflowplugin.applications.frm.FlowNodeReconciliation;
  34 import org.opendaylight.openflowplugin.applications.frm.ForwardingRulesManager;
  35 import org.opendaylight.openflowplugin.common.wait.SimpleTaskRetryLooper;
  36 import org.opendaylight.yang.gen.v1.urn.opendaylight.action.types.rev131112.action.action.GroupActionCase;
  37 import org.opendaylight.yang.gen.v1.urn.opendaylight.action.types.rev131112.action.list.Action;
  38 import org.opendaylight.yang.gen.v1.urn.opendaylight.flow.inventory.rev130819.FlowCapableNode;
  39 import org.opendaylight.yang.gen.v1.urn.opendaylight.flow.inventory.rev130819.FlowId;
  40 import org.opendaylight.yang.gen.v1.urn.opendaylight.flow.inventory.rev130819.meters.Meter;
  41 import org.opendaylight.yang.gen.v1.urn.opendaylight.flow.inventory.rev130819.meters.MeterBuilder;
  42 import org.opendaylight.yang.gen.v1.urn.opendaylight.flow.inventory.rev130819.meters.MeterKey;
  43 import org.opendaylight.yang.gen.v1.urn.opendaylight.flow.inventory.rev130819.meters.StaleMeter;
  44 import org.opendaylight.yang.gen.v1.urn.opendaylight.flow.inventory.rev130819.meters.StaleMeterKey;
  45 import org.opendaylight.yang.gen.v1.urn.opendaylight.flow.inventory.rev130819.tables.Table;
  46 import org.opendaylight.yang.gen.v1.urn.opendaylight.flow.inventory.rev130819.tables.TableKey;
  47 import org.opendaylight.yang.gen.v1.urn.opendaylight.flow.inventory.rev130819.tables.table.Flow;
  48 import org.opendaylight.yang.gen.v1.urn.opendaylight.flow.inventory.rev130819.tables.table.FlowBuilder;
  49 import org.opendaylight.yang.gen.v1.urn.opendaylight.flow.inventory.rev130819.tables.table.FlowKey;
  50 import org.opendaylight.yang.gen.v1.urn.opendaylight.flow.inventory.rev130819.tables.table.StaleFlow;
  51 import org.opendaylight.yang.gen.v1.urn.opendaylight.flow.inventory.rev130819.tables.table.StaleFlowKey;
  52 import org.opendaylight.yang.gen.v1.urn.opendaylight.group.types.rev131018.GroupId;
  53 import org.opendaylight.yang.gen.v1.urn.opendaylight.group.types.rev131018.group.buckets.Bucket;
  54 import org.opendaylight.yang.gen.v1.urn.opendaylight.group.types.rev131018.groups.Group;
  55 import org.opendaylight.yang.gen.v1.urn.opendaylight.group.types.rev131018.groups.GroupBuilder;
  56 import org.opendaylight.yang.gen.v1.urn.opendaylight.group.types.rev131018.groups.GroupKey;
  57 import org.opendaylight.yang.gen.v1.urn.opendaylight.group.types.rev131018.groups.StaleGroup;
  58 import org.opendaylight.yang.gen.v1.urn.opendaylight.group.types.rev131018.groups.StaleGroupKey;
  59 import org.opendaylight.yang.gen.v1.urn.opendaylight.inventory.rev130819.Nodes;
  60 import org.opendaylight.yang.gen.v1.urn.opendaylight.inventory.rev130819.nodes.Node;
  61 import org.opendaylight.yang.gen.v1.urn.opendaylight.meter.types.rev130918.MeterId;
  62 import org.opendaylight.yang.gen.v1.urn.opendaylight.table.types.rev131026.table.features.TableFeatures;
  63 import org.opendaylight.yang.gen.v1.urn.opendaylight.table.types.rev131026.table.features.TableFeaturesKey;
  64 import org.opendaylight.yangtools.concepts.ListenerRegistration;
  65 import org.opendaylight.yangtools.yang.binding.DataObject;
  66 import org.opendaylight.yangtools.yang.binding.InstanceIdentifier;
  67 import org.opendaylight.yangtools.yang.binding.KeyedInstanceIdentifier;
  68 import org.slf4j.Logger;
  69 import org.slf4j.LoggerFactory;
  70
  71
  72 /**
  73  * forwardingrules-manager
  74  * org.opendaylight.openflowplugin.applications.frm
  75  *
  76  * FlowNode Reconciliation Listener
  77  * Reconciliation for a new FlowNode
  78  *
  79  * @author <a href="mailto:vdemcak@cisco.com">Vaclav Demcak</a>
  80  *
  81  * Created: Jun 13, 2014
  82  */
  83 public class FlowNodeReconciliationImpl implements FlowNodeReconciliation {
  84
  85     private static final Logger LOG = LoggerFactory.getLogger(FlowNodeReconciliationImpl.class);
  86
  87     private final DataBroker dataBroker;
  88
  89     private final ForwardingRulesManager provider;
  90
  91     private ListenerRegistration<DataChangeListener> listenerRegistration;
  92
  93     public FlowNodeReconciliationImpl (final ForwardingRulesManager manager, final DataBroker db) {
  94         this.provider = Preconditions.checkNotNull(manager, "ForwardingRulesManager can not be null!");
  95         dataBroker = Preconditions.checkNotNull(db, "DataBroker can not be null!");
  96         /* Build Path */
  97         final InstanceIdentifier<FlowCapableNode> flowNodeWildCardIdentifier = InstanceIdentifier.create(Nodes.class)
  98                 .child(Node.class).augmentation(FlowCapableNode.class);
  99
 100         SimpleTaskRetryLooper looper = new SimpleTaskRetryLooper(ForwardingRulesManagerImpl.STARTUP_LOOP_TICK,
 101                 ForwardingRulesManagerImpl.STARTUP_LOOP_MAX_RETRIES);
 102         try {
 103             listenerRegistration = looper.loopUntilNoException(new Callable<ListenerRegistration<DataChangeListener>>() {
 104                 @Override
 105                 public ListenerRegistration<DataChangeListener> call() throws Exception {
 106                     return db.registerDataChangeListener(LogicalDatastoreType.OPERATIONAL,
 107                             flowNodeWildCardIdentifier, FlowNodeReconciliationImpl.this, DataChangeScope.BASE);
 108                 }
 109             });
 110         } catch (Exception e) {
 111             LOG.warn("data listener registration failed: {}", e.getMessage());
 112             LOG.debug("data listener registration failed.. ", e);
 113             throw new IllegalStateException("FlowNodeReconciliation startup fail! System needs restart.", e);
 114         }
 115     }
 116
 117     @Override
 118     public void close() {
 119         if (listenerRegistration != null) {
 120             try {
 121                 listenerRegistration.close();
 122             } catch (Exception e) {
 123                 LOG.warn("Error by stop FRM FlowNodeReconilListener: {}", e.getMessage());
 124                 LOG.debug("Error by stop FRM FlowNodeReconilListener..", e);
 125             }
 126             listenerRegistration = null;
 127         }
 128     }
 129
 130     @Override
 131     public void onDataChanged(final AsyncDataChangeEvent<InstanceIdentifier<?>, DataObject> changeEvent) {
 132         Preconditions.checkNotNull(changeEvent,"Async ChangeEvent can not be null!");
 133         /* All DataObjects for create */
 134         final Set<InstanceIdentifier<?>>  createdData = changeEvent.getCreatedData() != null
 135                 ? changeEvent.getCreatedData().keySet() : Collections.<InstanceIdentifier<?>> emptySet();
 136         /* All DataObjects for remove */
 137         final Set<InstanceIdentifier<?>> removeData = changeEvent.getRemovedPaths() != null
 138                 ? changeEvent.getRemovedPaths() : Collections.<InstanceIdentifier<?>> emptySet();
 139         /* All updated DataObjects */
 140         final Map<InstanceIdentifier<?>, DataObject> updateData = changeEvent.getUpdatedData() != null
 141                 ? changeEvent.getUpdatedData() : Collections.<InstanceIdentifier<?>, DataObject>emptyMap();
 142
 143         for (InstanceIdentifier<?> entryKey : removeData) {
 144             final InstanceIdentifier<FlowCapableNode> nodeIdent = entryKey
 145                     .firstIdentifierOf(FlowCapableNode.class);
 146             if ( ! nodeIdent.isWildcarded()) {
 147                 flowNodeDisconnected(nodeIdent);
 148             }
 149         }
 150         for (InstanceIdentifier<?> entryKey : createdData) {
 151             final InstanceIdentifier<FlowCapableNode> nodeIdent = entryKey
 152                     .firstIdentifierOf(FlowCapableNode.class);
 153             if ( ! nodeIdent.isWildcarded()) {
 154                 flowNodeConnected(nodeIdent);
 155             }
 156         }
 157
 158         // FIXME: just a hack to cover DS/operational dirty start
 159         // if all conventional ways failed and there is update
 160         if (removeData.isEmpty() && createdData.isEmpty() && updateData.size() == 1) {
 161             for (Map.Entry<InstanceIdentifier<?>, DataObject> entry : updateData.entrySet()) {
 162                 // and only if this update covers top element (flow-capable-node)
 163                 if (FlowCapableNode.class.equals(entry.getKey().getTargetType())) {
 164                     final InstanceIdentifier<FlowCapableNode> nodeIdent = entry.getKey()
 165                             .firstIdentifierOf(FlowCapableNode.class);
 166                     if (!nodeIdent.isWildcarded()) {
 167                         // then force registration to local node cache and reconcile
 168                         flowNodeConnected(nodeIdent, true);
 169                     }
 170                 }
 171             }
 172         }
 173     }
 174
 175     @Override
 176     public void flowNodeDisconnected(InstanceIdentifier<FlowCapableNode> disconnectedNode) {
 177         provider.unregistrateNode(disconnectedNode);
 178     }
 179
 180     @Override
 181     public void flowNodeConnected(InstanceIdentifier<FlowCapableNode> connectedNode) {
 182         flowNodeConnected(connectedNode, false);
 183     }
 184
 185     private void flowNodeConnected(InstanceIdentifier<FlowCapableNode> connectedNode, boolean force) {
 186         if (force || !provider.isNodeActive(connectedNode)) {
 187             provider.registrateNewNode(connectedNode);
 188
 189             if(!provider.isNodeOwner(connectedNode)) { return; }
 190
 191             if (provider.getConfiguration().isStaleMarkingEnabled()) {
 192                 LOG.info("Stale-Marking is ENABLED and proceeding with deletion of stale-marked entities on switch {}",
 193                         connectedNode.toString());
 194                 reconciliationPreProcess(connectedNode);
 195             }
 196             reconciliation(connectedNode);
 197         }
 198     }
 199
 200     private void reconciliation(final InstanceIdentifier<FlowCapableNode> nodeIdent) {
 201
 202         ReadOnlyTransaction trans = provider.getReadTranaction();
 203         Optional<FlowCapableNode> flowNode = Optional.absent();
 204
 205         try {
 206             flowNode = trans.read(LogicalDatastoreType.CONFIGURATION, nodeIdent).get();
 207         }
 208         catch (Exception e) {
 209             LOG.error("Fail with read Config/DS for Node {} !", nodeIdent, e);
 210         }
 211
 212         if (flowNode.isPresent()) {
 213             /* Tables - have to be pushed before groups */
 214             // CHECK if while pusing the update, updateTableInput can be null to emulate a table add
 215             List<Table> tableList = flowNode.get().getTable() != null
 216                     ? flowNode.get().getTable() : Collections.<Table> emptyList() ;
 217             for (Table table : tableList) {
 218                 TableKey tableKey = table.getKey();
 219                 KeyedInstanceIdentifier<TableFeatures, TableFeaturesKey> tableFeaturesII
 220                     = nodeIdent.child(Table.class, tableKey).child(TableFeatures.class, new TableFeaturesKey(tableKey.getId()));
 221                 List<TableFeatures> tableFeatures = table.getTableFeatures();
 222                 if (tableFeatures != null) {
 223                     for (TableFeatures tableFeaturesItem : tableFeatures) {
 224                         provider.getTableFeaturesCommiter().update(tableFeaturesII, tableFeaturesItem, null, nodeIdent);
 225                     }
 226                 }
 227             }
 228
 229             /* Groups - have to be first */
 230                 List<Group> groups = flowNode.get().getGroup() != null
 231                         ? flowNode.get().getGroup() : Collections.<Group>emptyList();
 232                 List<Group> toBeInstalledGroups = new ArrayList<>();
 233                 toBeInstalledGroups.addAll(groups);
 234                 List<Long> alreadyInstalledGroupids = new ArrayList<>();
 235
 236                 while (!toBeInstalledGroups.isEmpty()) {
 237                     ListIterator<Group> iterator = toBeInstalledGroups.listIterator();
 238                     while (iterator.hasNext()) {
 239                         Group group = iterator.next();
 240                         boolean okToInstall = true;
 241                         for (Bucket bucket : group.getBuckets().getBucket()) {
 242                             for (Action action : bucket.getAction()) {
 243                                 if (action.getAction().getImplementedInterface().getName()
 244                                         .equals("org.opendaylight.yang.gen.v1.urn.opendaylight.action.types.rev131112.action.action.GroupActionCase")) {
 245                                     Long groupId = ((GroupActionCase) (action.getAction())).getGroupAction().getGroupId();
 246                                     if (!alreadyInstalledGroupids.contains(groupId)) {
 247                                         okToInstall = false;
 248                                         break;
 249                                     }
 250                                 }
 251                             }
 252                             if (!okToInstall){
 253                                 break;
 254                             }
 255                         }
 256
 257
 258                         if (okToInstall) {
 259                             final KeyedInstanceIdentifier<Group, GroupKey> groupIdent =
 260                                     nodeIdent.child(Group.class, group.getKey());
 261                             this.provider.getGroupCommiter().add(groupIdent, group, nodeIdent);
 262                             alreadyInstalledGroupids.add(group.getGroupId().getValue());
 263                             iterator.remove();
 264                         }
 265                     }
 266                 }
 267             /* Meters */
 268             List<Meter> meters = flowNode.get().getMeter() != null
 269                     ? flowNode.get().getMeter() : Collections.<Meter> emptyList();
 270             for (Meter meter : meters) {
 271                 final KeyedInstanceIdentifier<Meter, MeterKey> meterIdent =
 272                         nodeIdent.child(Meter.class, meter.getKey());
 273                 this.provider.getMeterCommiter().add(meterIdent, meter, nodeIdent);
 274             }
 275             /* Flows */
 276             List<Table> tables = flowNode.get().getTable() != null
 277                     ? flowNode.get().getTable() : Collections.<Table> emptyList();
 278             for (Table table : tables) {
 279                 final KeyedInstanceIdentifier<Table, TableKey> tableIdent =
 280                         nodeIdent.child(Table.class, table.getKey());
 281                 List<Flow> flows = table.getFlow() != null ? table.getFlow() : Collections.<Flow> emptyList();
 282                 for (Flow flow : flows) {
 283                     final KeyedInstanceIdentifier<Flow, FlowKey> flowIdent =
 284                             tableIdent.child(Flow.class, flow.getKey());
 285                     this.provider.getFlowCommiter().add(flowIdent, flow, nodeIdent);
 286                 }
 287             }
 288         }
 289         /* clean transaction */
 290         trans.close();
 291     }
 292
 293
 294
 295     private void reconciliationPreProcess(final InstanceIdentifier<FlowCapableNode> nodeIdent) {
 296
 297
 298         List<InstanceIdentifier<StaleFlow>> staleFlowsToBeBulkDeleted = Lists.newArrayList();
 299         List<InstanceIdentifier<StaleGroup>> staleGroupsToBeBulkDeleted = Lists.newArrayList();
 300         List<InstanceIdentifier<StaleMeter>> staleMetersToBeBulkDeleted = Lists.newArrayList();
 301
 302
 303         ReadOnlyTransaction trans = provider.getReadTranaction();
 304         Optional<FlowCapableNode> flowNode = Optional.absent();
 305
 306         try {
 307             flowNode = trans.read(LogicalDatastoreType.CONFIGURATION, nodeIdent).get();
 308         }
 309         catch (Exception e) {
 310             LOG.error("Reconciliation Pre-Processing Fail with read Config/DS for Node {} !", nodeIdent, e);
 311         }
 312
 313         if (flowNode.isPresent()) {
 314
 315             LOG.debug("Proceeding with deletion of stale-marked Flows on switch {} using Openflow interface",
 316                     nodeIdent.toString());
 317             /* Stale-Flows - Stale-marked Flows have to be removed first for safety */
 318             List<Table> tables = flowNode.get().getTable() != null
 319                     ? flowNode.get().getTable() : Collections.<Table> emptyList();
 320             for (Table table : tables) {
 321                 final KeyedInstanceIdentifier<Table, TableKey> tableIdent =
 322                         nodeIdent.child(Table.class, table.getKey());
 323                 List<StaleFlow> staleFlows = table.getStaleFlow() != null ? table.getStaleFlow() : Collections.<StaleFlow> emptyList();
 324                 for (StaleFlow staleFlow : staleFlows) {
 325
 326                     FlowBuilder flowBuilder = new FlowBuilder(staleFlow);
 327                     Flow toBeDeletedFlow = flowBuilder.setId(staleFlow.getId()).build();
 328
 329                     final KeyedInstanceIdentifier<Flow, FlowKey> flowIdent =
 330                             tableIdent.child(Flow.class, toBeDeletedFlow.getKey());
 331
 332
 333                     this.provider.getFlowCommiter().remove(flowIdent, toBeDeletedFlow, nodeIdent);
 334
 335                     staleFlowsToBeBulkDeleted.add(getStaleFlowInstanceIdentifier(staleFlow, nodeIdent));
 336                 }
 337             }
 338
 339
 340             LOG.debug("Proceeding with deletion of stale-marked Groups for switch {} using Openflow interface",
 341                     nodeIdent.toString());
 342
 343             // TODO: Should we collate the futures of RPC-calls to be sure that groups are Flows are fully deleted
 344             // before attempting to delete groups - just in case there are references
 345
 346             /* Stale-marked Groups - Can be deleted after flows */
 347             List<StaleGroup> staleGroups = flowNode.get().getStaleGroup() != null
 348                     ? flowNode.get().getStaleGroup() : Collections.<StaleGroup> emptyList();
 349             for (StaleGroup staleGroup : staleGroups) {
 350
 351                 GroupBuilder groupBuilder = new GroupBuilder(staleGroup);
 352                 Group toBeDeletedGroup = groupBuilder.setGroupId(staleGroup.getGroupId()).build();
 353
 354                 final KeyedInstanceIdentifier<Group, GroupKey> groupIdent =
 355                         nodeIdent.child(Group.class, toBeDeletedGroup.getKey());
 356
 357                 this.provider.getGroupCommiter().add(groupIdent, toBeDeletedGroup, nodeIdent);
 358
 359                 staleGroupsToBeBulkDeleted.add(getStaleGroupInstanceIdentifier(staleGroup, nodeIdent));
 360             }
 361
 362             LOG.debug("Proceeding with deletion of stale-marked Meters for switch {} using Openflow interface",
 363                     nodeIdent.toString());
 364             /* Stale-marked Meters - can be deleted anytime - so least priority */
 365             List<StaleMeter> staleMeters = flowNode.get().getStaleMeter() != null
 366                     ? flowNode.get().getStaleMeter() : Collections.<StaleMeter> emptyList();
 367
 368             for (StaleMeter staleMeter : staleMeters) {
 369
 370                 MeterBuilder meterBuilder = new MeterBuilder(staleMeter);
 371                 Meter toBeDeletedMeter = meterBuilder.setMeterId(staleMeter.getMeterId()).build();
 372
 373                 final KeyedInstanceIdentifier<Meter, MeterKey> meterIdent =
 374                         nodeIdent.child(Meter.class, toBeDeletedMeter.getKey());
 375
 376
 377                 this.provider.getMeterCommiter().add(meterIdent, toBeDeletedMeter, nodeIdent);
 378
 379                 staleMetersToBeBulkDeleted.add(getStaleMeterInstanceIdentifier(staleMeter, nodeIdent));
 380             }
 381
 382         }
 383         /* clean transaction */
 384         trans.close();
 385
 386         LOG.debug("Deleting all stale-marked flows/groups/meters of for switch {} in Configuration DS",
 387                 nodeIdent.toString());
 388                 // Now, do the bulk deletions
 389                 deleteDSStaleFlows(staleFlowsToBeBulkDeleted);
 390         deleteDSStaleGroups(staleGroupsToBeBulkDeleted);
 391         deleteDSStaleMeters(staleMetersToBeBulkDeleted);
 392
 393     }
 394
 395
 396     private void deleteDSStaleFlows(List<InstanceIdentifier<StaleFlow>> flowsForBulkDelete){
 397         ImmutableList.Builder<InstanceIdentifier<StaleFlow>> builder = ImmutableList.builder();
 398         ImmutableList<InstanceIdentifier<StaleFlow>> bulkDelFlows = builder.addAll(flowsForBulkDelete.iterator()).build();
 399
 400         WriteTransaction writeTransaction = dataBroker.newWriteOnlyTransaction();
 401
 402         for (InstanceIdentifier<StaleFlow> staleFlowIId : flowsForBulkDelete){
 403             writeTransaction.delete(LogicalDatastoreType.CONFIGURATION, staleFlowIId);
 404         }
 405
 406         CheckedFuture<Void, TransactionCommitFailedException> submitFuture = writeTransaction.submit();
 407         handleStaleEntityDeletionResultFuture(submitFuture);
 408     }
 409
 410     private void deleteDSStaleGroups(List<InstanceIdentifier<StaleGroup>> groupsForBulkDelete){
 411         ImmutableList.Builder<InstanceIdentifier<StaleGroup>> builder = ImmutableList.builder();
 412         ImmutableList<InstanceIdentifier<StaleGroup>> bulkDelGroups = builder.addAll(groupsForBulkDelete.iterator()).build();
 413
 414         WriteTransaction writeTransaction = dataBroker.newWriteOnlyTransaction();
 415
 416         for (InstanceIdentifier<StaleGroup> staleGroupIId : groupsForBulkDelete){
 417             writeTransaction.delete(LogicalDatastoreType.CONFIGURATION, staleGroupIId);
 418         }
 419
 420         CheckedFuture<Void, TransactionCommitFailedException> submitFuture = writeTransaction.submit();
 421         handleStaleEntityDeletionResultFuture(submitFuture);
 422
 423     }
 424
 425     private void deleteDSStaleMeters(List<InstanceIdentifier<StaleMeter>> metersForBulkDelete){
 426         ImmutableList.Builder<InstanceIdentifier<StaleMeter>> builder = ImmutableList.builder();
 427         ImmutableList<InstanceIdentifier<StaleMeter>> bulkDelGroups = builder.addAll(metersForBulkDelete.iterator()).build();
 428
 429         WriteTransaction writeTransaction = dataBroker.newWriteOnlyTransaction();
 430
 431         for (InstanceIdentifier<StaleMeter> staleMeterIId : metersForBulkDelete){
 432             writeTransaction.delete(LogicalDatastoreType.CONFIGURATION, staleMeterIId);
 433         }
 434
 435         CheckedFuture<Void, TransactionCommitFailedException> submitFuture = writeTransaction.submit();
 436         handleStaleEntityDeletionResultFuture(submitFuture);
 437
 438
 439     }
 440
 441
 442     private InstanceIdentifier<org.opendaylight.yang.gen.v1.urn.opendaylight.flow.inventory.rev130819.tables.table.StaleFlow> getStaleFlowInstanceIdentifier(StaleFlow staleFlow, InstanceIdentifier<FlowCapableNode> nodeIdent) {
 443         return nodeIdent
 444                 .child(Table.class, new TableKey(staleFlow.getTableId()))
 445                 .child(org.opendaylight.yang.gen.v1.urn.opendaylight.flow.inventory.rev130819.tables.table.StaleFlow.class,
 446                         new StaleFlowKey(new FlowId(staleFlow.getId())));
 447     }
 448
 449     private InstanceIdentifier<org.opendaylight.yang.gen.v1.urn.opendaylight.group.types.rev131018.groups.StaleGroup> getStaleGroupInstanceIdentifier(StaleGroup staleGroup, InstanceIdentifier<FlowCapableNode> nodeIdent) {
 450         return nodeIdent
 451                 .child(StaleGroup.class, new StaleGroupKey(new GroupId(staleGroup.getGroupId())));
 452     }
 453
 454
 455     private InstanceIdentifier<org.opendaylight.yang.gen.v1.urn.opendaylight.flow.inventory.rev130819.meters.StaleMeter> getStaleMeterInstanceIdentifier(StaleMeter staleMeter, InstanceIdentifier<FlowCapableNode> nodeIdent) {
 456         return nodeIdent
 457                 .child(StaleMeter.class, new StaleMeterKey(new MeterId(staleMeter.getMeterId())));
 458     }
 459
 460
 461     private void handleStaleEntityDeletionResultFuture(CheckedFuture<Void, TransactionCommitFailedException> submitFuture) {
 462         Futures.addCallback(submitFuture, new FutureCallback<Void>() {
 463             @Override
 464             public void onSuccess(Void result) { LOG.debug("Stale entity removal success");
 465             }
 466
 467             @Override
 468             public void onFailure(Throwable t) {
 469                 LOG.error("Stale entity removal failed {}", t);
 470             }
 471         });
 472
 473     }
 474
 475
 476
 477
 478
 479 }
 480