X-Git-Url: https://git.opendaylight.org/gerrit/gitweb?a=blobdiff_plain;f=opendaylight%2Fmd-sal%2Fsal-distributed-datastore%2Fsrc%2Fmain%2Fjava%2Forg%2Fopendaylight%2Fcontroller%2Fcluster%2Fdatastore%2Futils%2FActorContext.java;h=e35dab8e728a66dd61693259619a57ec521969f4;hb=35624f56612e0b8ca641c2fc5fed25f1c7628e51;hp=0fb09d8231903bbc9b530f488039adc6b8672b90;hpb=a8e01610a247900873b41c92d3299f6e9091de37;p=controller.git diff --git a/opendaylight/md-sal/sal-distributed-datastore/src/main/java/org/opendaylight/controller/cluster/datastore/utils/ActorContext.java b/opendaylight/md-sal/sal-distributed-datastore/src/main/java/org/opendaylight/controller/cluster/datastore/utils/ActorContext.java index 0fb09d8231..e35dab8e72 100644 --- a/opendaylight/md-sal/sal-distributed-datastore/src/main/java/org/opendaylight/controller/cluster/datastore/utils/ActorContext.java +++ b/opendaylight/md-sal/sal-distributed-datastore/src/main/java/org/opendaylight/controller/cluster/datastore/utils/ActorContext.java @@ -9,44 +9,49 @@ package org.opendaylight.controller.cluster.datastore.utils; import static akka.pattern.Patterns.ask; + import akka.actor.ActorPath; import akka.actor.ActorRef; import akka.actor.ActorSelection; import akka.actor.ActorSystem; import akka.actor.Address; -import akka.actor.PoisonPill; -import akka.dispatch.Futures; import akka.dispatch.Mapper; +import akka.dispatch.OnComplete; import akka.pattern.AskTimeoutException; +import akka.pattern.Patterns; import akka.util.Timeout; -import com.codahale.metrics.JmxReporter; import com.codahale.metrics.MetricRegistry; import com.codahale.metrics.Timer; -import com.google.common.annotations.VisibleForTesting; import com.google.common.base.Optional; import com.google.common.base.Preconditions; import com.google.common.base.Strings; -import com.google.common.cache.Cache; -import com.google.common.cache.CacheBuilder; -import com.google.common.util.concurrent.RateLimiter; import java.util.concurrent.TimeUnit; -import org.opendaylight.controller.cluster.common.actor.CommonConfig; +import java.util.function.Function; +import org.opendaylight.controller.cluster.access.concepts.MemberName; import org.opendaylight.controller.cluster.datastore.ClusterWrapper; -import org.opendaylight.controller.cluster.datastore.Configuration; +import org.opendaylight.controller.cluster.datastore.DataStoreVersions; import org.opendaylight.controller.cluster.datastore.DatastoreContext; +import org.opendaylight.controller.cluster.datastore.DatastoreContextFactory; +import org.opendaylight.controller.cluster.datastore.config.Configuration; import org.opendaylight.controller.cluster.datastore.exceptions.LocalShardNotFoundException; +import org.opendaylight.controller.cluster.datastore.exceptions.NoShardLeaderException; import org.opendaylight.controller.cluster.datastore.exceptions.NotInitializedException; import org.opendaylight.controller.cluster.datastore.exceptions.PrimaryNotFoundException; import org.opendaylight.controller.cluster.datastore.exceptions.TimeoutException; import org.opendaylight.controller.cluster.datastore.exceptions.UnknownMessageException; -import org.opendaylight.controller.cluster.datastore.messages.ActorNotInitialized; import org.opendaylight.controller.cluster.datastore.messages.FindLocalShard; import org.opendaylight.controller.cluster.datastore.messages.FindPrimary; +import org.opendaylight.controller.cluster.datastore.messages.LocalPrimaryShardFound; import org.opendaylight.controller.cluster.datastore.messages.LocalShardFound; import org.opendaylight.controller.cluster.datastore.messages.LocalShardNotFound; -import org.opendaylight.controller.cluster.datastore.messages.PrimaryFound; -import org.opendaylight.controller.cluster.datastore.messages.PrimaryNotFound; +import org.opendaylight.controller.cluster.datastore.messages.PrimaryShardInfo; +import org.opendaylight.controller.cluster.datastore.messages.RemotePrimaryShardFound; import org.opendaylight.controller.cluster.datastore.messages.UpdateSchemaContext; +import org.opendaylight.controller.cluster.datastore.shardstrategy.ShardStrategyFactory; +import org.opendaylight.controller.cluster.raft.client.messages.Shutdown; +import org.opendaylight.controller.cluster.reporting.MetricsReporter; +import org.opendaylight.mdsal.common.api.LogicalDatastoreType; +import org.opendaylight.yangtools.yang.data.api.schema.tree.DataTree; import org.opendaylight.yangtools.yang.model.api.SchemaContext; import org.slf4j.Logger; import org.slf4j.LoggerFactory; @@ -64,26 +69,25 @@ import scala.concurrent.duration.FiniteDuration; */ public class ActorContext { private static final Logger LOG = LoggerFactory.getLogger(ActorContext.class); - private static final String UNKNOWN_DATA_STORE_TYPE = "unknown"; private static final String DISTRIBUTED_DATA_STORE_METRIC_REGISTRY = "distributed-data-store"; private static final String METRIC_RATE = "rate"; - private static final String DOMAIN = "org.opendaylight.controller.cluster.datastore"; private static final Mapper FIND_PRIMARY_FAILURE_TRANSFORMER = new Mapper() { @Override public Throwable apply(Throwable failure) { Throwable actualFailure = failure; - if(failure instanceof AskTimeoutException) { + if (failure instanceof AskTimeoutException) { // A timeout exception most likely means the shard isn't initialized. actualFailure = new NotInitializedException( - "Timed out trying to find the primary shard. Most likely cause is the " + - "shard is not initialized yet."); + "Timed out trying to find the primary shard. Most likely cause is the " + + "shard is not initialized yet."); } return actualFailure; } }; - public static final String MAILBOX = "bounded-mailbox"; + public static final String BOUNDED_MAILBOX = "bounded-mailbox"; + public static final String COMMIT = "commit"; private final ActorSystem actorSystem; private final ActorRef shardManager; @@ -93,42 +97,45 @@ public class ActorContext { private FiniteDuration operationDuration; private Timeout operationTimeout; private final String selfAddressHostPort; - private RateLimiter txRateLimiter; - private final MetricRegistry metricRegistry = new MetricRegistry(); - private final JmxReporter jmxReporter = JmxReporter.forRegistry(metricRegistry).inDomain(DOMAIN).build(); - private final int transactionOutstandingOperationLimit; + private TransactionRateLimiter txRateLimiter; private Timeout transactionCommitOperationTimeout; + private Timeout shardInitializationTimeout; private final Dispatchers dispatchers; - private final Cache> primaryShardActorSelectionCache; private volatile SchemaContext schemaContext; + + // Used as a write memory barrier. + @SuppressWarnings("unused") private volatile boolean updated; + private final MetricRegistry metricRegistry = MetricsReporter.getInstance(DatastoreContext.METRICS_DOMAIN) + .getMetricsRegistry(); + + private final PrimaryShardInfoFutureCache primaryShardInfoCache; + private final ShardStrategyFactory shardStrategyFactory; + public ActorContext(ActorSystem actorSystem, ActorRef shardManager, ClusterWrapper clusterWrapper, Configuration configuration) { this(actorSystem, shardManager, clusterWrapper, configuration, - DatastoreContext.newBuilder().build()); + DatastoreContext.newBuilder().build(), new PrimaryShardInfoFutureCache()); } public ActorContext(ActorSystem actorSystem, ActorRef shardManager, ClusterWrapper clusterWrapper, Configuration configuration, - DatastoreContext datastoreContext) { + DatastoreContext datastoreContext, PrimaryShardInfoFutureCache primaryShardInfoCache) { this.actorSystem = actorSystem; this.shardManager = shardManager; this.clusterWrapper = clusterWrapper; this.configuration = configuration; this.datastoreContext = datastoreContext; this.dispatchers = new Dispatchers(actorSystem.dispatchers()); + this.primaryShardInfoCache = primaryShardInfoCache; - setCachedProperties(); - primaryShardActorSelectionCache = CacheBuilder.newBuilder() - .expireAfterWrite(datastoreContext.getShardLeaderElectionTimeout().duration().toMillis(), TimeUnit.MILLISECONDS) - .build(); + final LogicalDatastoreType convertedType = + LogicalDatastoreType.valueOf(datastoreContext.getLogicalStoreType().name()); + this.shardStrategyFactory = new ShardStrategyFactory(configuration, convertedType); - operationDuration = Duration.create(datastoreContext.getOperationTimeoutInSeconds(), TimeUnit.SECONDS); - operationTimeout = new Timeout(operationDuration); - transactionCommitOperationTimeout = new Timeout(Duration.create(getDatastoreContext().getShardTransactionCommitTimeoutInSeconds(), - TimeUnit.SECONDS)); + setCachedProperties(); Address selfAddress = clusterWrapper.getSelfAddress(); if (selfAddress != null && !selfAddress.host().isEmpty()) { @@ -137,19 +144,18 @@ public class ActorContext { selfAddressHostPort = null; } - transactionOutstandingOperationLimit = new CommonConfig(this.getActorSystem().settings().config()).getMailBoxCapacity(); - jmxReporter.start(); - } private void setCachedProperties() { - txRateLimiter = RateLimiter.create(datastoreContext.getTransactionCreationInitialRateLimit()); + txRateLimiter = new TransactionRateLimiter(this); - operationDuration = Duration.create(datastoreContext.getOperationTimeoutInSeconds(), TimeUnit.SECONDS); + operationDuration = Duration.create(datastoreContext.getOperationTimeoutInMillis(), TimeUnit.MILLISECONDS); operationTimeout = new Timeout(operationDuration); transactionCommitOperationTimeout = new Timeout(Duration.create( datastoreContext.getShardTransactionCommitTimeoutInSeconds(), TimeUnit.SECONDS)); + + shardInitializationTimeout = new Timeout(datastoreContext.getShardInitializationTimeout().duration().$times(2)); } public DatastoreContext getDatastoreContext() { @@ -175,13 +181,13 @@ public class ActorContext { public void setSchemaContext(SchemaContext schemaContext) { this.schemaContext = schemaContext; - if(shardManager != null) { + if (shardManager != null) { shardManager.tell(new UpdateSchemaContext(schemaContext), ActorRef.noSender()); } } - public void setDatastoreContext(DatastoreContext context) { - this.datastoreContext = context; + public void setDatastoreContext(DatastoreContextFactory contextFactory) { + this.datastoreContext = contextFactory.getBaseDatastoreContext(); setCachedProperties(); // We write the 'updated' volatile to trigger a write memory barrier so that the writes above @@ -193,8 +199,8 @@ public class ActorContext { updated = true; - if(shardManager != null) { - shardManager.tell(context, ActorRef.noSender()); + if (shardManager != null) { + shardManager.tell(contextFactory, ActorRef.noSender()); } } @@ -202,46 +208,32 @@ public class ActorContext { return schemaContext; } - /** - * Finds the primary shard for the given shard name - * - * @param shardName - * @return - */ - public Optional findPrimaryShard(String shardName) { - String path = findPrimaryPathOrNull(shardName); - if (path == null){ - return Optional.absent(); - } - return Optional.of(actorSystem.actorSelection(path)); - } - - public Future findPrimaryShardAsync(final String shardName) { - Future ret = primaryShardActorSelectionCache.getIfPresent(shardName); - if(ret != null){ + public Future findPrimaryShardAsync(final String shardName) { + Future ret = primaryShardInfoCache.getIfPresent(shardName); + if (ret != null) { return ret; } Future future = executeOperationAsync(shardManager, - new FindPrimary(shardName, true).toSerializable(), - datastoreContext.getShardInitializationTimeout()); + new FindPrimary(shardName, true), shardInitializationTimeout); - return future.transform(new Mapper() { + return future.transform(new Mapper() { @Override - public ActorSelection checkedApply(Object response) throws Exception { - if(PrimaryFound.SERIALIZABLE_CLASS.isInstance(response)) { - PrimaryFound found = PrimaryFound.fromSerializable(response); - - LOG.debug("Primary found {}", found.getPrimaryPath()); - ActorSelection actorSelection = actorSystem.actorSelection(found.getPrimaryPath()); - primaryShardActorSelectionCache.put(shardName, Futures.successful(actorSelection)); - return actorSelection; - } else if(response instanceof ActorNotInitialized) { - throw new NotInitializedException( - String.format("Found primary shard %s but it's not initialized yet. " + - "Please try again later", shardName)); - } else if(response instanceof PrimaryNotFound) { - throw new PrimaryNotFoundException( - String.format("No primary shard found for %S.", shardName)); + public PrimaryShardInfo checkedApply(Object response) throws UnknownMessageException { + if (response instanceof RemotePrimaryShardFound) { + LOG.debug("findPrimaryShardAsync received: {}", response); + RemotePrimaryShardFound found = (RemotePrimaryShardFound)response; + return onPrimaryShardFound(shardName, found.getPrimaryPath(), found.getPrimaryVersion(), null); + } else if (response instanceof LocalPrimaryShardFound) { + LOG.debug("findPrimaryShardAsync received: {}", response); + LocalPrimaryShardFound found = (LocalPrimaryShardFound)response; + return onPrimaryShardFound(shardName, found.getPrimaryPath(), DataStoreVersions.CURRENT_VERSION, + found.getLocalShardDataTree()); + } else if (response instanceof NotInitializedException) { + throw (NotInitializedException)response; + } else if (response instanceof PrimaryNotFoundException) { + throw (PrimaryNotFoundException)response; + } else if (response instanceof NoShardLeaderException) { + throw (NoShardLeaderException)response; } throw new UnknownMessageException(String.format( @@ -250,8 +242,17 @@ public class ActorContext { }, FIND_PRIMARY_FAILURE_TRANSFORMER, getClientDispatcher()); } + private PrimaryShardInfo onPrimaryShardFound(String shardName, String primaryActorPath, + short primaryVersion, DataTree localShardDataTree) { + ActorSelection actorSelection = actorSystem.actorSelection(primaryActorPath); + PrimaryShardInfo info = localShardDataTree == null ? new PrimaryShardInfo(actorSelection, primaryVersion) : + new PrimaryShardInfo(actorSelection, primaryVersion, localShardDataTree); + primaryShardInfoCache.putSuccessful(shardName, info); + return info; + } + /** - * Finds a local shard given its shard name and return it's ActorRef + * Finds a local shard given its shard name and return it's ActorRef. * * @param shardName the name of the local shard that needs to be found * @return a reference to a local shard actor which represents the shard @@ -275,22 +276,20 @@ public class ActorContext { * * @param shardName the name of the local shard that needs to be found */ - public Future findLocalShardAsync( final String shardName) { + public Future findLocalShardAsync(final String shardName) { Future future = executeOperationAsync(shardManager, - new FindLocalShard(shardName, true), datastoreContext.getShardInitializationTimeout()); + new FindLocalShard(shardName, true), shardInitializationTimeout); return future.map(new Mapper() { @Override public ActorRef checkedApply(Object response) throws Throwable { - if(response instanceof LocalShardFound) { + if (response instanceof LocalShardFound) { LocalShardFound found = (LocalShardFound)response; LOG.debug("Local shard found {}", found.getPath()); return found.getPath(); - } else if(response instanceof ActorNotInitialized) { - throw new NotInitializedException( - String.format("Found local shard for %s but it's not initialized yet.", - shardName)); - } else if(response instanceof LocalShardNotFound) { + } else if (response instanceof NotInitializedException) { + throw (NotInitializedException)response; + } else if (response instanceof LocalShardNotFound) { throw new LocalShardNotFoundException( String.format("Local shard for %s does not exist.", shardName)); } @@ -301,70 +300,52 @@ public class ActorContext { }, getClientDispatcher()); } - private String findPrimaryPathOrNull(String shardName) { - Object result = executeOperation(shardManager, new FindPrimary(shardName, false).toSerializable()); - - if (result.getClass().equals(PrimaryFound.SERIALIZABLE_CLASS)) { - PrimaryFound found = PrimaryFound.fromSerializable(result); - - LOG.debug("Primary found {}", found.getPrimaryPath()); - return found.getPrimaryPath(); - - } else if (result.getClass().equals(ActorNotInitialized.class)){ - throw new NotInitializedException( - String.format("Found primary shard[%s] but its not initialized yet. Please try again later", shardName) - ); - - } else { - return null; - } - } - - /** - * Executes an operation on a local actor and wait for it's response + * Executes an operation on a local actor and wait for it's response. * - * @param actor - * @param message + * @param actor the actor + * @param message the message to send * @return The response of the operation */ + @SuppressWarnings("checkstyle:IllegalCatch") public Object executeOperation(ActorRef actor, Object message) { Future future = executeOperationAsync(actor, message, operationTimeout); try { return Await.result(future, operationDuration); } catch (Exception e) { - throw new TimeoutException("Sending message " + message.getClass().toString() + - " to actor " + actor.toString() + " failed. Try again later.", e); + throw new TimeoutException("Sending message " + message.getClass().toString() + + " to actor " + actor.toString() + " failed. Try again later.", e); } } - public Future executeOperationAsync(ActorRef actor, Object message, Timeout timeout) { - Preconditions.checkArgument(actor != null, "actor must not be null"); - Preconditions.checkArgument(message != null, "message must not be null"); - - LOG.debug("Sending message {} to {}", message.getClass(), actor); - return doAsk(actor, message, timeout); - } - /** - * Execute an operation on a remote actor and wait for it's response + * Execute an operation on a remote actor and wait for it's response. * - * @param actor - * @param message - * @return + * @param actor the actor + * @param message the message + * @return the response message */ + @SuppressWarnings("checkstyle:IllegalCatch") public Object executeOperation(ActorSelection actor, Object message) { Future future = executeOperationAsync(actor, message); try { return Await.result(future, operationDuration); } catch (Exception e) { - throw new TimeoutException("Sending message " + message.getClass().toString() + - " to actor " + actor.toString() + " failed. Try again later.", e); + throw new TimeoutException("Sending message " + message.getClass().toString() + + " to actor " + actor.toString() + " failed. Try again later.", e); } } + public Future executeOperationAsync(ActorRef actor, Object message, Timeout timeout) { + Preconditions.checkArgument(actor != null, "actor must not be null"); + Preconditions.checkArgument(message != null, "message must not be null"); + + LOG.debug("Sending message {} to {}", message.getClass(), actor); + return doAsk(actor, message, timeout); + } + /** * Execute an operation on a remote actor asynchronously. * @@ -410,34 +391,43 @@ public class ActorContext { actor.tell(message, ActorRef.noSender()); } + @SuppressWarnings("checkstyle:IllegalCatch") public void shutdown() { - shardManager.tell(PoisonPill.getInstance(), null); - actorSystem.shutdown(); + FiniteDuration duration = datastoreContext.getShardRaftConfig().getElectionTimeOutInterval().$times(3); + try { + Await.ready(Patterns.gracefulStop(shardManager, duration, Shutdown.INSTANCE), duration); + } catch (Exception e) { + LOG.warn("ShardManager for {} data store did not shutdown gracefully", getDataStoreName(), e); + } } public ClusterWrapper getClusterWrapper() { return clusterWrapper; } - public String getCurrentMemberName(){ + public MemberName getCurrentMemberName() { return clusterWrapper.getCurrentMemberName(); } /** - * Send the message to each and every shard - * - * @param message + * Send the message to each and every shard. */ - public void broadcast(Object message){ - for(String shardName : configuration.getAllShardNames()){ - - Optional primary = findPrimaryShard(shardName); - if (primary.isPresent()) { - primary.get().tell(message, ActorRef.noSender()); - } else { - LOG.warn("broadcast failed to send message {} to shard {}. Primary not found", - message.getClass().getSimpleName(), shardName); - } + public void broadcast(final Function messageSupplier, Class messageClass) { + for (final String shardName : configuration.getAllShardNames()) { + + Future primaryFuture = findPrimaryShardAsync(shardName); + primaryFuture.onComplete(new OnComplete() { + @Override + public void onComplete(Throwable failure, PrimaryShardInfo primaryShardInfo) { + if (failure != null) { + LOG.warn("broadcast failed to send message {} to shard {}: {}", + messageClass.getSimpleName(), shardName, failure); + } else { + Object message = messageSupplier.apply(primaryShardInfo.getPrimaryShardVersion()); + primaryShardInfo.getPrimaryShardActor().tell(message, ActorRef.noSender()); + } + } + }, getClientDispatcher()); } } @@ -445,6 +435,10 @@ public class ActorContext { return operationDuration; } + public Timeout getOperationTimeout() { + return operationTimeout; + } + public boolean isPathLocal(String path) { if (Strings.isNullOrEmpty(path)) { return false; @@ -472,118 +466,88 @@ public class ActorContext { } } - /** - * @deprecated This method is present only to support backward compatibility with Helium and should not be - * used any further - * - * - * @param primaryPath - * @param localPathOfRemoteActor - * @return - */ - @Deprecated - public String resolvePath(final String primaryPath, - final String localPathOfRemoteActor) { - StringBuilder builder = new StringBuilder(); - String[] primaryPathElements = primaryPath.split("/"); - builder.append(primaryPathElements[0]).append("//") - .append(primaryPathElements[1]).append(primaryPathElements[2]); - String[] remotePathElements = localPathOfRemoteActor.split("/"); - for (int i = 3; i < remotePathElements.length; i++) { - builder.append("/").append(remotePathElements[i]); - } - - return builder.toString(); - } - - /** - * Get the maximum number of operations that are to be permitted within a transaction before the transaction - * should begin throttling the operations - * - * Parking reading this configuration here because we need to get to the actor system settings - * - * @return - */ - public int getTransactionOutstandingOperationLimit(){ - return transactionOutstandingOperationLimit; - } - /** * This is a utility method that lets us get a Timer object for any operation. This is a little open-ended to allow * us to create a timer for pretty much anything. * - * @param operationName - * @return + * @param operationName the name of the operation + * @return the Timer instance */ - public Timer getOperationTimer(String operationName){ - final String rate = MetricRegistry.name(DISTRIBUTED_DATA_STORE_METRIC_REGISTRY, datastoreContext.getDataStoreType(), operationName, METRIC_RATE); - return metricRegistry.timer(rate); + public Timer getOperationTimer(String operationName) { + return getOperationTimer(datastoreContext.getDataStoreName(), operationName); } - /** - * Get the type of the data store to which this ActorContext belongs - * - * @return - */ - public String getDataStoreType() { - return datastoreContext.getDataStoreType(); + public Timer getOperationTimer(String dataStoreType, String operationName) { + final String rate = MetricRegistry.name(DISTRIBUTED_DATA_STORE_METRIC_REGISTRY, dataStoreType, + operationName, METRIC_RATE); + return metricRegistry.timer(rate); } /** - * Set the number of transaction creation permits that are to be allowed + * Get the name of the data store to which this ActorContext belongs. * - * @param permitsPerSecond + * @return the data store name */ - public void setTxCreationLimit(double permitsPerSecond){ - txRateLimiter.setRate(permitsPerSecond); + public String getDataStoreName() { + return datastoreContext.getDataStoreName(); } /** - * Get the current transaction creation rate limit - * @return + * Get the current transaction creation rate limit. + * + * @return the rate limit */ - public double getTxCreationLimit(){ - return txRateLimiter.getRate(); + public double getTxCreationLimit() { + return txRateLimiter.getTxCreationLimit(); } /** * Try to acquire a transaction creation permit. Will block if no permits are available. */ - public void acquireTxCreationPermit(){ + public void acquireTxCreationPermit() { txRateLimiter.acquire(); } /** - * Return the operation timeout to be used when committing transactions - * @return + * Returns the operation timeout to be used when committing transactions. + * + * @return the operation timeout */ - public Timeout getTransactionCommitOperationTimeout(){ + public Timeout getTransactionCommitOperationTimeout() { return transactionCommitOperationTimeout; } /** * An akka dispatcher that is meant to be used when processing ask Futures which were triggered by client - * code on the datastore - * @return + * code on the datastore. + * + * @return the dispatcher */ public ExecutionContext getClientDispatcher() { return this.dispatchers.getDispatcher(Dispatchers.DispatcherType.Client); } - public String getNotificationDispatcherPath(){ + public String getNotificationDispatcherPath() { return this.dispatchers.getDispatcherPath(Dispatchers.DispatcherType.Notification); } - protected Future doAsk(ActorRef actorRef, Object message, Timeout timeout){ + public Configuration getConfiguration() { + return configuration; + } + + public ShardStrategyFactory getShardStrategyFactory() { + return shardStrategyFactory; + } + + protected Future doAsk(ActorRef actorRef, Object message, Timeout timeout) { return ask(actorRef, message, timeout); } - protected Future doAsk(ActorSelection actorRef, Object message, Timeout timeout){ + protected Future doAsk(ActorSelection actorRef, Object message, Timeout timeout) { return ask(actorRef, message, timeout); } - @VisibleForTesting - Cache> getPrimaryShardActorSelectionCache() { - return primaryShardActorSelectionCache; + public PrimaryShardInfoFutureCache getPrimaryShardInfoCache() { + return primaryShardInfoCache; } }