Bump versions by x.y.(z+1)
[bgpcep.git] / bgp / rib-impl / src / main / java / org / opendaylight / protocol / bgp / rib / impl / RIBImpl.java
index d4e31e56244d062ae33fe13811b3f95e8754054c..aa4f538e2b55864f79d91a0629c3165e1277aa46 100755 (executable)
@@ -7,13 +7,16 @@
  */
 package org.opendaylight.protocol.bgp.rib.impl;
 
-import com.google.common.annotations.VisibleForTesting;
 import com.google.common.base.MoreObjects;
 import com.google.common.base.MoreObjects.ToStringHelper;
 import com.google.common.base.Optional;
 import com.google.common.base.Preconditions;
+import com.google.common.collect.ImmutableMap;
 import com.google.common.collect.ImmutableSet;
-import java.util.ArrayList;
+import com.google.common.util.concurrent.CheckedFuture;
+import com.google.common.util.concurrent.Futures;
+import com.google.common.util.concurrent.ListenableFuture;
+import java.util.HashMap;
 import java.util.HashSet;
 import java.util.List;
 import java.util.Map;
@@ -21,9 +24,8 @@ import java.util.Map.Entry;
 import java.util.Set;
 import javax.annotation.Nonnull;
 import javax.annotation.Nullable;
+import javax.annotation.concurrent.GuardedBy;
 import javax.annotation.concurrent.ThreadSafe;
-import org.opendaylight.controller.config.yang.bgp.rib.impl.RIBImplRuntimeRegistration;
-import org.opendaylight.controller.config.yang.bgp.rib.impl.RIBImplRuntimeRegistrator;
 import org.opendaylight.controller.md.sal.common.api.data.AsyncTransaction;
 import org.opendaylight.controller.md.sal.common.api.data.LogicalDatastoreType;
 import org.opendaylight.controller.md.sal.common.api.data.TransactionChain;
@@ -35,21 +37,27 @@ import org.opendaylight.controller.md.sal.dom.api.DOMDataTreeChangeService;
 import org.opendaylight.controller.md.sal.dom.api.DOMDataWriteTransaction;
 import org.opendaylight.controller.md.sal.dom.api.DOMTransactionChain;
 import org.opendaylight.mdsal.binding.dom.codec.api.BindingCodecTreeFactory;
+import org.opendaylight.mdsal.singleton.common.api.ClusterSingletonService;
+import org.opendaylight.mdsal.singleton.common.api.ClusterSingletonServiceProvider;
+import org.opendaylight.mdsal.singleton.common.api.ClusterSingletonServiceRegistration;
+import org.opendaylight.mdsal.singleton.common.api.ServiceGroupIdentifier;
 import org.opendaylight.protocol.bgp.mode.api.PathSelectionMode;
 import org.opendaylight.protocol.bgp.mode.impl.base.BasePathSelectionModeFactory;
 import org.opendaylight.protocol.bgp.openconfig.spi.BGPConfigModuleTracker;
 import org.opendaylight.protocol.bgp.openconfig.spi.BGPOpenConfigProvider;
 import org.opendaylight.protocol.bgp.rib.DefaultRibReference;
 import org.opendaylight.protocol.bgp.rib.impl.spi.BGPDispatcher;
+import org.opendaylight.protocol.bgp.rib.impl.spi.BgpDeployer;
 import org.opendaylight.protocol.bgp.rib.impl.spi.CodecsRegistry;
 import org.opendaylight.protocol.bgp.rib.impl.spi.ImportPolicyPeerTracker;
 import org.opendaylight.protocol.bgp.rib.impl.spi.RIB;
 import org.opendaylight.protocol.bgp.rib.impl.spi.RIBSupportContextRegistry;
 import org.opendaylight.protocol.bgp.rib.impl.stats.rib.impl.BGPRenderStats;
 import org.opendaylight.protocol.bgp.rib.impl.stats.rib.impl.RIBImplRuntimeMXBeanImpl;
-import org.opendaylight.protocol.bgp.rib.spi.CacheDisconnectedPeers;
+import org.opendaylight.protocol.bgp.rib.spi.ExportPolicyPeerTracker;
 import org.opendaylight.protocol.bgp.rib.spi.RIBExtensionConsumerContext;
 import org.opendaylight.protocol.bgp.rib.spi.RibSupportUtils;
+import org.opendaylight.protocol.bgp.rib.spi.util.ClusterSingletonServiceRegistrationHelper;
 import org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.inet.types.rev130715.AsNumber;
 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.multiprotocol.rev130919.BgpTableType;
 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.rib.rev130925.BgpRib;
@@ -81,15 +89,14 @@ import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
 
 @ThreadSafe
-public final class RIBImpl extends DefaultRibReference implements AutoCloseable, RIB, TransactionChainListener, SchemaContextListener {
+public final class RIBImpl extends DefaultRibReference implements ClusterSingletonService, AutoCloseable, RIB, TransactionChainListener, SchemaContextListener {
     private static final Logger LOG = LoggerFactory.getLogger(RIBImpl.class);
-    @VisibleForTesting
-    public static final QName RIB_ID_QNAME = QName.create(Rib.QNAME, "id").intern();
-    @VisibleForTesting
-    public static final ContainerNode EMPTY_TABLE_ATTRIBUTES = ImmutableNodes.containerNode(org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.rib.rev130925.rib.tables.Attributes.QNAME);
+    private static final QName RIB_ID_QNAME = QName.create(Rib.QNAME, "id").intern();
+    private static final ContainerNode EMPTY_TABLE_ATTRIBUTES = ImmutableNodes.containerNode(org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.rib.rev130925.rib.tables.Attributes.QNAME);
+    private static final int MAX_REGISTRATION_ATTEMPTS = 10;
+    private static final int SLEEP_TIME = MAX_REGISTRATION_ATTEMPTS;
 
     private final BGPDispatcher dispatcher;
-    private final DOMTransactionChain domChain;
     private final AsNumber localAs;
     private final BgpId bgpIdentifier;
     private final Set<BgpTableType> localTables;
@@ -99,30 +106,39 @@ public final class RIBImpl extends DefaultRibReference implements AutoCloseable,
     private final YangInstanceIdentifier yangRibId;
     private final RIBSupportContextRegistryImpl ribContextRegistry;
     private final CodecsRegistryImpl codecsRegistry;
+    private final ServiceGroupIdentifier serviceGroupIdentifier;
+    private final ClusterSingletonServiceProvider provider;
+    private final BgpDeployer.WriteConfiguration configurationWriter;
+    private ClusterSingletonServiceRegistration registration;
     private final DOMDataBrokerExtension service;
-    private final List<LocRibWriter> locRibs = new ArrayList<>();
+    private final Map<TransactionChain, LocRibWriter> txChainToLocRibWriter = new HashMap<>();
     private final BGPConfigModuleTracker configModuleTracker;
     private final BGPOpenConfigProvider openConfigProvider;
-    private final CacheDisconnectedPeers cacheDisconnectedPeers;
     private final Map<TablesKey, PathSelectionMode> bestPathSelectionStrategies;
     private final ImportPolicyPeerTracker importPolicyPeerTracker;
     private final RIBImplRuntimeMXBeanImpl renderStats;
-    private RIBImplRuntimeRegistrator registrator = null;
-    private RIBImplRuntimeRegistration runtimeReg = null;
-
-    public RIBImpl(final RibId ribId, final AsNumber localAs, final BgpId localBgpId, final ClusterIdentifier clusterId, final RIBExtensionConsumerContext extensions,
-            final BGPDispatcher dispatcher, final BindingCodecTreeFactory codecFactory,
-            final DOMDataBroker domDataBroker, final List<BgpTableType> localTables,
-            @Nonnull final Map<TablesKey, PathSelectionMode> bestPathSelectionStrategies, final GeneratedClassLoadingStrategy classStrategy,
-            final BGPConfigModuleTracker moduleTracker, final BGPOpenConfigProvider openConfigProvider) {
+    private final RibId ribId;
+    private final Map<TablesKey, ExportPolicyPeerTracker> exportPolicyPeerTrackerMap;
+
+    private DOMTransactionChain domChain;
+    @GuardedBy("this")
+    private boolean isServiceInstantiated;
+
+    public RIBImpl(final ClusterSingletonServiceProvider provider, final RibId ribId, final AsNumber localAs, final BgpId localBgpId,
+        final ClusterIdentifier clusterId, final RIBExtensionConsumerContext extensions, final BGPDispatcher dispatcher,
+        final BindingCodecTreeFactory codecFactory, final DOMDataBroker domDataBroker, final List<BgpTableType> localTables,
+        @Nonnull final Map<TablesKey, PathSelectionMode> bestPathSelectionStrategies, final GeneratedClassLoadingStrategy classStrategy,
+        final BGPConfigModuleTracker moduleTracker, final BGPOpenConfigProvider openConfigProvider,
+        final BgpDeployer.WriteConfiguration configurationWriter) {
+
         super(InstanceIdentifier.create(BgpRib.class).child(Rib.class, new RibKey(Preconditions.checkNotNull(ribId))));
-        this.domChain = domDataBroker.createTransactionChain(this);
         this.localAs = Preconditions.checkNotNull(localAs);
         this.bgpIdentifier = Preconditions.checkNotNull(localBgpId);
         this.dispatcher = Preconditions.checkNotNull(dispatcher);
         this.localTables = ImmutableSet.copyOf(localTables);
         this.localTablesKeys = new HashSet<>();
         this.domDataBroker = Preconditions.checkNotNull(domDataBroker);
+        this.service = this.domDataBroker.getSupportedExtensions().get(DOMDataTreeChangeService.class);
         this.extensions = Preconditions.checkNotNull(extensions);
         this.codecsRegistry = CodecsRegistryImpl.create(codecFactory, classStrategy);
         this.ribContextRegistry = RIBSupportContextRegistryImpl.create(extensions, this.codecsRegistry);
@@ -130,90 +146,39 @@ public final class RIBImpl extends DefaultRibReference implements AutoCloseable,
         this.yangRibId = yangRibIdBuilder.nodeWithKey(Rib.QNAME, RIB_ID_QNAME, ribId.getValue()).build();
         this.configModuleTracker = moduleTracker;
         this.openConfigProvider = openConfigProvider;
-        this.cacheDisconnectedPeers = new CacheDisconnectedPeersImpl();
         this.bestPathSelectionStrategies = Preconditions.checkNotNull(bestPathSelectionStrategies);
         final ClusterIdentifier cId = (clusterId == null) ? new ClusterIdentifier(localBgpId) : clusterId;
         this.renderStats = new RIBImplRuntimeMXBeanImpl(localBgpId, ribId, localAs, cId);
-
-        LOG.debug("Instantiating RIB table {} at {}", ribId, this.yangRibId);
-
-        final ContainerNode bgpRib = Builders.containerBuilder()
-                .withNodeIdentifier(new NodeIdentifier(BgpRib.QNAME))
-                .addChild(ImmutableNodes.mapNodeBuilder(Rib.QNAME).build()).build();
-
-        final MapEntryNode ribInstance = Builders.mapEntryBuilder().withNodeIdentifier(
-                new NodeIdentifierWithPredicates(Rib.QNAME, RIB_ID_QNAME, ribId.getValue()))
-                .addChild(ImmutableNodes.leafNode(RIB_ID_QNAME, ribId.getValue()))
-                .addChild(ImmutableNodes.mapNodeBuilder(Peer.QNAME).build())
-                .addChild(Builders.containerBuilder().withNodeIdentifier(new NodeIdentifier(LocRib.QNAME))
-                        .addChild(ImmutableNodes.mapNodeBuilder(Tables.QNAME).build())
-                        .build()).build();
-
-
-        final DOMDataWriteTransaction trans = this.domChain.newWriteOnlyTransaction();
-
-        // merge empty BgpRib + Rib, to make sure the top-level parent structure is present
-        trans.merge(LogicalDatastoreType.OPERATIONAL, YangInstanceIdentifier.builder().node(BgpRib.QNAME).build(), bgpRib);
-        trans.put(LogicalDatastoreType.OPERATIONAL, yangRibIdBuilder.build(), ribInstance);
-
-        try {
-            trans.submit().checkedGet();
-        } catch (final TransactionCommitFailedException e) {
-            LOG.error("Failed to initiate RIB {}", this.yangRibId, e);
-        }
-        final PolicyDatabase policyDatabase  = new PolicyDatabase(localAs.getValue(), localBgpId, cId);
+        this.ribId = ribId;
+        final PolicyDatabase policyDatabase = new PolicyDatabase(this.localAs.getValue(), localBgpId, cId);
         this.importPolicyPeerTracker = new ImportPolicyPeerTrackerImpl(policyDatabase);
+        this.serviceGroupIdentifier = ServiceGroupIdentifier.create(this.ribId.getValue() + "-service-group");
+        Preconditions.checkNotNull(provider, "ClusterSingletonServiceProvider is null");
+        this.provider = provider;
+        this.configurationWriter = configurationWriter;
 
-        final DOMDataBrokerExtension domDatatreeChangeService = this.domDataBroker.getSupportedExtensions().get(DOMDataTreeChangeService.class);
-        this.service = domDatatreeChangeService;
-        LOG.debug("Effective RIB created.");
-
+        final ImmutableMap.Builder<TablesKey, ExportPolicyPeerTracker> exportPolicies = new ImmutableMap.Builder<>();
         for (final BgpTableType t : this.localTables) {
             final TablesKey key = new TablesKey(t.getAfi(), t.getSafi());
             this.localTablesKeys.add(key);
-            startLocRib(key, policyDatabase);
+            exportPolicies.put(key, new ExportPolicyPeerTrackerImpl(policyDatabase, key));
         }
+        this.exportPolicyPeerTrackerMap = exportPolicies.build();
 
-        if (this.configModuleTracker != null) {
-            this.configModuleTracker.onInstanceCreate();
-        }
+        LOG.info("RIB Singleton Service {} registered, RIB {}", getIdentifier().getValue(), this.ribId.getValue());
+        //this need to be always the last step
+        this.registration = registerClusterSingletonService(this);
     }
 
-    public RIBImpl(final RibId ribId, final AsNumber localAs, final BgpId localBgpId, @Nullable final ClusterIdentifier clusterId, final RIBExtensionConsumerContext extensions,
-            final BGPDispatcher dispatcher, final BindingCodecTreeFactory codecFactory,
-            final DOMDataBroker domDataBroker, final List<BgpTableType> localTables,
-            final Map<TablesKey, PathSelectionMode> bestPathSelectionstrategies, final GeneratedClassLoadingStrategy classStrategy) {
-        this(ribId, localAs, localBgpId, clusterId, extensions, dispatcher, codecFactory,
-                domDataBroker, localTables, bestPathSelectionstrategies, classStrategy, null, null);
+    public RIBImpl(final ClusterSingletonServiceProvider provider, final RibId ribId, final AsNumber localAs, final BgpId localBgpId, @Nullable final ClusterIdentifier clusterId,
+        final RIBExtensionConsumerContext extensions, final BGPDispatcher dispatcher, final BindingCodecTreeFactory codecFactory,
+        final DOMDataBroker domDataBroker, final List<BgpTableType> localTables, final Map<TablesKey, PathSelectionMode> bestPathSelectionstrategies,
+        final GeneratedClassLoadingStrategy classStrategy, final BgpDeployer.WriteConfiguration configurationWriter) {
+        this(provider, ribId, localAs, localBgpId, clusterId, extensions, dispatcher, codecFactory,
+            domDataBroker, localTables, bestPathSelectionstrategies, classStrategy, null, null, configurationWriter);
     }
 
-    public synchronized void registerRootRuntimeBean(final RIBImplRuntimeRegistrator registrator) {
-        this.registrator = registrator;
-
-        initStatsRuntimeBean();
-    }
-
-    /**
-     * Register the statistic runtime bean
-     */
-    private void initStatsRuntimeBean() {
-        if (this.registrator != null) {
-            LOG.debug("Initializing Render Status runtime bean..");
-            this.runtimeReg = this.registrator.register(this.renderStats);
-        }
-    }
-
-    private void stopStatsRuntimeBean() {
-        if (this.runtimeReg != null) {
-            LOG.debug("Destroying Render Status runtime bean..");
-            this.runtimeReg.close();
-            this.runtimeReg = null;
-        }
-        // reset all the stats
-        this.renderStats.getLocRibRouteCounter().resetAll();
-    }
-
-    private void startLocRib(final TablesKey key, final PolicyDatabase pd) {
+    private void startLocRib(final TablesKey key) {
         LOG.debug("Creating LocRib table for {}", key);
         // create locRibWriter for each table
         final DOMDataWriteTransaction tx = this.domChain.newWriteOnlyTransaction();
@@ -238,14 +203,21 @@ public final class RIBImpl extends DefaultRibReference implements AutoCloseable,
         } catch (final TransactionCommitFailedException e1) {
             LOG.error("Failed to initiate LocRIB for key {}", key, e1);
         }
+        createLocRibWriter(key);
+    }
 
+    private synchronized void createLocRibWriter(final TablesKey key) {
+        LOG.debug("Creating LocRIB writer for key {}", key);
+        final DOMTransactionChain txChain = createPeerChain(this);
         PathSelectionMode pathSelectionStrategy = this.bestPathSelectionStrategies.get(key);
         if (pathSelectionStrategy == null) {
             pathSelectionStrategy = BasePathSelectionModeFactory.createBestPathSelectionStrategy();
         }
 
-        this.locRibs.add(LocRibWriter.create(this.ribContextRegistry, key, createPeerChain(this), getYangRibId(), this.localAs, getService(), pd,
-                this.cacheDisconnectedPeers, pathSelectionStrategy, this.renderStats.getLocRibRouteCounter().init(key)));
+        final LocRibWriter locRibWriter = LocRibWriter.create(this.ribContextRegistry, key, txChain,
+            getYangRibId(), this.localAs, getService(), this.exportPolicyPeerTrackerMap.get(key),
+            pathSelectionStrategy, this.renderStats.getLocRibRouteCounter().init(key));
+        this.txChainToLocRibWriter.put(txChain, locRibWriter);
     }
 
     @Override
@@ -258,27 +230,10 @@ public final class RIBImpl extends DefaultRibReference implements AutoCloseable,
     }
 
     @Override
-    public synchronized void close() {
-        try {
-            final DOMDataWriteTransaction t = this.domChain.newWriteOnlyTransaction();
-            t.delete(LogicalDatastoreType.OPERATIONAL, getYangRibId());
-            t.submit().checkedGet();
-        } catch (final TransactionCommitFailedException e) {
-            LOG.warn("Failed to remove RIB instance {} from DS.", getYangRibId(), e);
-        }
-        this.domChain.close();
-        for (final LocRibWriter locRib : this.locRibs) {
-            try {
-                locRib.close();
-            } catch (final Exception e) {
-                LOG.warn("Could not close LocalRib reference: {}", locRib, e);
-            }
-        }
-
-        stopStatsRuntimeBean();
-
-        if (this.configModuleTracker != null) {
-            this.configModuleTracker.onInstanceClose();
+    public synchronized void close() throws Exception {
+        if (this.registration != null) {
+            this.registration.close();
+            this.registration = null;
         }
     }
 
@@ -292,6 +247,7 @@ public final class RIBImpl extends DefaultRibReference implements AutoCloseable,
         return this.bgpIdentifier;
     }
 
+    @Nonnull
     @Override
     public Set<? extends BgpTableType> getLocalTables() {
         return this.localTables;
@@ -303,8 +259,14 @@ public final class RIBImpl extends DefaultRibReference implements AutoCloseable,
     }
 
     @Override
-    public void onTransactionChainFailed(final TransactionChain<?, ?> chain, final AsyncTransaction<?, ?> transaction, final Throwable cause) {
+    public synchronized void onTransactionChainFailed(final TransactionChain<?, ?> chain, final AsyncTransaction<?, ?> transaction, final Throwable cause) {
         LOG.error("Broken chain in RIB {} transaction {}", getInstanceIdentifier(), transaction != null ? transaction.getIdentifier() : null, cause);
+        if (this.txChainToLocRibWriter.containsKey(chain)) {
+            final LocRibWriter locRibWriter = this.txChainToLocRibWriter.remove(chain);
+            final DOMTransactionChain newChain = createPeerChain(this);
+            locRibWriter.restart(newChain);
+            this.txChainToLocRibWriter.put(newChain, locRibWriter);
+        }
     }
 
     @Override
@@ -363,12 +325,98 @@ public final class RIBImpl extends DefaultRibReference implements AutoCloseable,
     }
 
     @Override
-    public CacheDisconnectedPeers getCacheDisconnectedPeers() {
-        return this.cacheDisconnectedPeers;
+    public ImportPolicyPeerTracker getImportPolicyPeerTracker() {
+        return this.importPolicyPeerTracker;
     }
 
     @Override
-    public ImportPolicyPeerTracker getImportPolicyPeerTracker() {
-        return this.importPolicyPeerTracker;
+    public ExportPolicyPeerTracker getExportPolicyPeerTracker(final TablesKey tablesKey) {
+        return this.exportPolicyPeerTrackerMap.get(tablesKey);
+    }
+
+    @Override
+    public synchronized void instantiateServiceInstance() {
+        this.isServiceInstantiated = true;
+        this.domChain = this.domDataBroker.createTransactionChain(this);
+        if(this.configurationWriter != null) {
+            this.configurationWriter.apply();
+        }
+        LOG.info("RIB Singleton Service {} instantiated, RIB {}", getIdentifier().getValue(), this.ribId.getValue());
+        LOG.debug("Instantiating RIB table {} at {}", this.ribId , this.yangRibId);
+
+        final ContainerNode bgpRib = Builders.containerBuilder().withNodeIdentifier(new NodeIdentifier(BgpRib.QNAME))
+            .addChild(ImmutableNodes.mapNodeBuilder(Rib.QNAME).build()).build();
+
+        final MapEntryNode ribInstance = Builders.mapEntryBuilder().withNodeIdentifier(
+            new NodeIdentifierWithPredicates(Rib.QNAME, RIB_ID_QNAME, this.ribId .getValue()))
+            .addChild(ImmutableNodes.leafNode(RIB_ID_QNAME, this.ribId .getValue()))
+            .addChild(ImmutableNodes.mapNodeBuilder(Peer.QNAME).build())
+            .addChild(Builders.containerBuilder().withNodeIdentifier(new NodeIdentifier(LocRib.QNAME))
+                .addChild(ImmutableNodes.mapNodeBuilder(Tables.QNAME).build())
+                .build()).build();
+
+
+        final DOMDataWriteTransaction trans = this.domChain.newWriteOnlyTransaction();
+
+        // merge empty BgpRib + Rib, to make sure the top-level parent structure is present
+        trans.merge(LogicalDatastoreType.OPERATIONAL, YangInstanceIdentifier.builder().node(BgpRib.QNAME).build(), bgpRib);
+        trans.put(LogicalDatastoreType.OPERATIONAL, this.yangRibId, ribInstance);
+
+        try {
+            trans.submit().checkedGet();
+        } catch (final TransactionCommitFailedException e) {
+            LOG.error("Failed to initiate RIB {}", this.yangRibId, e);
+        }
+
+        LOG.debug("Effective RIB created.");
+
+        this.localTablesKeys.forEach(this::startLocRib);
+        if (this.configModuleTracker != null) {
+            this.configModuleTracker.onInstanceCreate();
+        }
+    }
+
+    @Override
+    public synchronized ListenableFuture<Void> closeServiceInstance() {
+        if(!this.isServiceInstantiated) {
+            LOG.trace("RIB Singleton Service {} already closed, RIB {}", getIdentifier().getValue(),
+                this.ribId.getValue());
+            return Futures.immediateFuture(null);
+        }
+        LOG.info("Close RIB Singleton Service {}, RIB {}", getIdentifier().getValue(), this.ribId.getValue());
+        this.isServiceInstantiated = false;
+
+        this.txChainToLocRibWriter.values().forEach(LocRibWriter::close);
+        this.txChainToLocRibWriter.clear();
+
+        this.renderStats.getLocRibRouteCounter().resetAll();
+
+        if (this.configModuleTracker != null) {
+            this.configModuleTracker.onInstanceClose();
+        }
+
+        final DOMDataWriteTransaction t = this.domChain.newWriteOnlyTransaction();
+        t.delete(LogicalDatastoreType.OPERATIONAL, getYangRibId());
+        final CheckedFuture<Void, TransactionCommitFailedException> cleanFuture = t.submit();
+
+        this.domChain.close();
+
+        return cleanFuture;
+    }
+
+    @Override
+    public ServiceGroupIdentifier getIdentifier() {
+        return this.serviceGroupIdentifier;
+    }
+
+    @Override
+    public ClusterSingletonServiceRegistration registerClusterSingletonService(final ClusterSingletonService clusterSingletonService) {
+        return ClusterSingletonServiceRegistrationHelper.registerSingletonService(this.provider, clusterSingletonService, MAX_REGISTRATION_ATTEMPTS,
+                SLEEP_TIME);
+    }
+
+    @Override
+    public ServiceGroupIdentifier getRibIServiceGroupIdentifier() {
+        return getIdentifier();
     }
 }