X-Git-Url: https://git.opendaylight.org/gerrit/gitweb?p=controller.git;a=blobdiff_plain;f=opendaylight%2Fmd-sal%2Fsal-distributed-datastore%2Fsrc%2Fmain%2Fjava%2Forg%2Fopendaylight%2Fcontroller%2Fcluster%2Fdatastore%2FShard.java;h=ddb5989f096145cddd3b716afa8dfc1dce3311e3;hp=43a9faa3e44e5d6fe77db7cce74929f8888dcadb;hb=9e59cc0d824e6752a7a3f3ba092abaaf3c1d4193;hpb=36f7cda0765248e257702addbff6f50da7ab0dd6 diff --git a/opendaylight/md-sal/sal-distributed-datastore/src/main/java/org/opendaylight/controller/cluster/datastore/Shard.java b/opendaylight/md-sal/sal-distributed-datastore/src/main/java/org/opendaylight/controller/cluster/datastore/Shard.java index 43a9faa3e4..ddb5989f09 100644 --- a/opendaylight/md-sal/sal-distributed-datastore/src/main/java/org/opendaylight/controller/cluster/datastore/Shard.java +++ b/opendaylight/md-sal/sal-distributed-datastore/src/main/java/org/opendaylight/controller/cluster/datastore/Shard.java @@ -10,59 +10,69 @@ package org.opendaylight.controller.cluster.datastore; import akka.actor.ActorRef; import akka.actor.ActorSelection; +import akka.actor.PoisonPill; import akka.actor.Props; import akka.event.Logging; import akka.event.LoggingAdapter; import akka.japi.Creator; +import akka.persistence.RecoveryFailure; import akka.serialization.Serialization; - +import com.google.common.annotations.VisibleForTesting; import com.google.common.base.Optional; import com.google.common.base.Preconditions; +import com.google.common.collect.Lists; +import com.google.common.util.concurrent.CheckedFuture; import com.google.common.util.concurrent.FutureCallback; import com.google.common.util.concurrent.Futures; import com.google.common.util.concurrent.ListenableFuture; - +import com.google.protobuf.ByteString; +import com.google.protobuf.InvalidProtocolBufferException; +import org.opendaylight.controller.cluster.common.actor.CommonConfig; +import org.opendaylight.controller.cluster.common.actor.MeteringBehavior; import org.opendaylight.controller.cluster.datastore.identifiers.ShardIdentifier; import org.opendaylight.controller.cluster.datastore.identifiers.ShardTransactionIdentifier; import org.opendaylight.controller.cluster.datastore.jmx.mbeans.shard.ShardMBeanFactory; import org.opendaylight.controller.cluster.datastore.jmx.mbeans.shard.ShardStats; +import org.opendaylight.controller.cluster.datastore.messages.CloseTransactionChain; import org.opendaylight.controller.cluster.datastore.messages.CommitTransactionReply; import org.opendaylight.controller.cluster.datastore.messages.CreateTransaction; -import org.opendaylight.controller.cluster.datastore.messages.CreateTransactionChain; -import org.opendaylight.controller.cluster.datastore.messages.CreateTransactionChainReply; import org.opendaylight.controller.cluster.datastore.messages.CreateTransactionReply; import org.opendaylight.controller.cluster.datastore.messages.EnableNotification; import org.opendaylight.controller.cluster.datastore.messages.ForwardedCommitTransaction; import org.opendaylight.controller.cluster.datastore.messages.PeerAddressResolved; +import org.opendaylight.controller.cluster.datastore.messages.ReadData; +import org.opendaylight.controller.cluster.datastore.messages.ReadDataReply; import org.opendaylight.controller.cluster.datastore.messages.RegisterChangeListener; import org.opendaylight.controller.cluster.datastore.messages.RegisterChangeListenerReply; import org.opendaylight.controller.cluster.datastore.messages.UpdateSchemaContext; import org.opendaylight.controller.cluster.datastore.modification.Modification; import org.opendaylight.controller.cluster.datastore.modification.MutableCompositeModification; -import org.opendaylight.controller.cluster.raft.ConfigParams; -import org.opendaylight.controller.cluster.raft.DefaultConfigParamsImpl; +import org.opendaylight.controller.cluster.datastore.node.NormalizedNodeToNodeCodec; import org.opendaylight.controller.cluster.raft.RaftActor; import org.opendaylight.controller.cluster.raft.ReplicatedLogEntry; +import org.opendaylight.controller.cluster.raft.base.messages.CaptureSnapshotReply; +import org.opendaylight.controller.cluster.raft.protobuff.client.messages.CompositeModificationPayload; +import org.opendaylight.controller.cluster.raft.protobuff.client.messages.Payload; import org.opendaylight.controller.md.sal.common.api.data.AsyncDataChangeListener; +import org.opendaylight.controller.md.sal.common.api.data.ReadFailedException; import org.opendaylight.controller.md.sal.dom.store.impl.InMemoryDOMDataStore; import org.opendaylight.controller.md.sal.dom.store.impl.InMemoryDOMDataStoreFactory; -import org.opendaylight.controller.sal.core.spi.data.DOMStoreReadWriteTransaction; +import org.opendaylight.controller.protobuff.messages.common.NormalizedNodeMessages; +import org.opendaylight.controller.sal.core.spi.data.DOMStoreReadTransaction; import org.opendaylight.controller.sal.core.spi.data.DOMStoreThreePhaseCommitCohort; import org.opendaylight.controller.sal.core.spi.data.DOMStoreTransactionChain; +import org.opendaylight.controller.sal.core.spi.data.DOMStoreTransactionFactory; +import org.opendaylight.controller.sal.core.spi.data.DOMStoreWriteTransaction; import org.opendaylight.yangtools.concepts.ListenerRegistration; import org.opendaylight.yangtools.yang.data.api.YangInstanceIdentifier; import org.opendaylight.yangtools.yang.data.api.schema.NormalizedNode; import org.opendaylight.yangtools.yang.model.api.SchemaContext; - -import scala.concurrent.duration.FiniteDuration; - import java.util.ArrayList; -import java.util.Date; +import java.util.Collection; import java.util.HashMap; import java.util.List; import java.util.Map; import java.util.concurrent.ExecutionException; -import java.util.concurrent.TimeUnit; /** * A Shard represents a portion of the logical data tree
@@ -72,8 +82,6 @@ import java.util.concurrent.TimeUnit; */ public class Shard extends RaftActor { - private static final ConfigParams configParams = new ShardConfigParams(); - public static final String DEFAULT_NAME = "default"; // The state of this Shard @@ -98,15 +106,26 @@ public class Shard extends RaftActor { private final DatastoreContext datastoreContext; - private SchemaContext schemaContext; - private Shard(ShardIdentifier name, Map peerAddresses, - DatastoreContext datastoreContext) { - super(name.toString(), mapPeerAddresses(peerAddresses), Optional.of(configParams)); + private ActorRef createSnapshotTransaction; + + /** + * Coordinates persistence recovery on startup. + */ + private ShardRecoveryCoordinator recoveryCoordinator; + private List currentLogRecoveryBatch; + + private final Map transactionChains = new HashMap<>(); + + protected Shard(ShardIdentifier name, Map peerAddresses, + DatastoreContext datastoreContext, SchemaContext schemaContext) { + super(name.toString(), mapPeerAddresses(peerAddresses), + Optional.of(datastoreContext.getShardRaftConfig())); this.name = name; this.datastoreContext = datastoreContext; + this.schemaContext = schemaContext; String setting = System.getProperty("shard.persistent"); @@ -117,9 +136,18 @@ public class Shard extends RaftActor { store = InMemoryDOMDataStoreFactory.create(name.toString(), null, datastoreContext.getDataStoreProperties()); - shardMBean = ShardMBeanFactory.getShardStatsMBean(name.toString()); + if(schemaContext != null) { + store.onGlobalContextUpdated(schemaContext); + } + shardMBean = ShardMBeanFactory.getShardStatsMBean(name.toString(), + datastoreContext.getDataStoreMXBeanType()); + shardMBean.setDataStoreExecutor(store.getDomStoreExecutor()); + shardMBean.setNotificationManager(store.getDataChangeListenerNotificationManager()); + if (isMetricsCaptureEnabled()) { + getContext().become(new MeteringBehavior(this)); + } } private static Map mapPeerAddresses( @@ -136,25 +164,50 @@ public class Shard extends RaftActor { public static Props props(final ShardIdentifier name, final Map peerAddresses, - DatastoreContext datastoreContext) { + DatastoreContext datastoreContext, SchemaContext schemaContext) { Preconditions.checkNotNull(name, "name should not be null"); Preconditions.checkNotNull(peerAddresses, "peerAddresses should not be null"); - Preconditions.checkNotNull(datastoreContext, "shardContext should not be null"); + Preconditions.checkNotNull(datastoreContext, "dataStoreContext should not be null"); + Preconditions.checkNotNull(schemaContext, "schemaContext should not be null"); - return Props.create(new ShardCreator(name, peerAddresses, datastoreContext)); + return Props.create(new ShardCreator(name, peerAddresses, datastoreContext, schemaContext)); + } + + @Override public void onReceiveRecover(Object message) { + if(LOG.isDebugEnabled()) { + LOG.debug("onReceiveRecover: Received message {} from {}", + message.getClass().toString(), + getSender()); + } + + if (message instanceof RecoveryFailure){ + LOG.error(((RecoveryFailure) message).cause(), "Recovery failed because of this cause"); + } else { + super.onReceiveRecover(message); + } } @Override public void onReceiveCommand(Object message) { - LOG.debug("Received message {} from {}", message.getClass().toString(), - getSender()); + if(LOG.isDebugEnabled()) { + LOG.debug("onReceiveCommand: Received message {} from {}", + message.getClass().toString(), + getSender()); + } - if (message.getClass() - .equals(CreateTransactionChain.SERIALIZABLE_CLASS)) { - if (isLeader()) { - createTransactionChain(); - } else if (getLeader() != null) { - getLeader().forward(message, getContext()); - } + if(message.getClass().equals(ReadDataReply.SERIALIZABLE_CLASS)) { + // This must be for install snapshot. Don't want to open this up and trigger + // deSerialization + self() + .tell(new CaptureSnapshotReply(ReadDataReply.getNormalizedNodeByteString(message)), + self()); + + createSnapshotTransaction = null; + // Send a PoisonPill instead of sending close transaction because we do not really need + // a response + getSender().tell(PoisonPill.getInstance(), self()); + + } else if (message.getClass().equals(CloseTransactionChain.SERIALIZABLE_CLASS)){ + closeTransactionChain(CloseTransactionChain.fromSerializable(message)); } else if (message instanceof RegisterChangeListener) { registerChangeListener((RegisterChangeListener) message); } else if (message instanceof UpdateSchemaContext) { @@ -167,6 +220,9 @@ public class Shard extends RaftActor { createTransaction(CreateTransaction.fromSerializable(message)); } else if (getLeader() != null) { getLeader().forward(message, getContext()); + } else { + getSender().tell(new akka.actor.Status.Failure(new IllegalStateException( + "Could not find leader so transaction cannot be created")), getSelf()); } } else if (message instanceof PeerAddressResolved) { PeerAddressResolved resolved = (PeerAddressResolved) message; @@ -177,110 +233,151 @@ public class Shard extends RaftActor { } } + private void closeTransactionChain(CloseTransactionChain closeTransactionChain) { + DOMStoreTransactionChain chain = + transactionChains.remove(closeTransactionChain.getTransactionChainId()); + + if(chain != null) { + chain.close(); + } + } + private ActorRef createTypedTransactionActor( - CreateTransaction createTransaction, - ShardTransactionIdentifier transactionId) { - if (createTransaction.getTransactionType() + int transactionType, + ShardTransactionIdentifier transactionId, + String transactionChainId ) { + + DOMStoreTransactionFactory factory = store; + + if(!transactionChainId.isEmpty()) { + factory = transactionChains.get(transactionChainId); + if(factory == null){ + DOMStoreTransactionChain transactionChain = store.createTransactionChain(); + transactionChains.put(transactionChainId, transactionChain); + factory = transactionChain; + } + } + + if(this.schemaContext == null){ + throw new NullPointerException("schemaContext should not be null"); + } + + if (transactionType == TransactionProxy.TransactionType.READ_ONLY.ordinal()) { shardMBean.incrementReadOnlyTransactionCount(); return getContext().actorOf( - ShardTransaction.props(store.newReadOnlyTransaction(), getSelf(), - schemaContext,datastoreContext, name.toString()), transactionId.toString()); + ShardTransaction.props(factory.newReadOnlyTransaction(), getSelf(), + schemaContext,datastoreContext, shardMBean), transactionId.toString()); - } else if (createTransaction.getTransactionType() + } else if (transactionType == TransactionProxy.TransactionType.READ_WRITE.ordinal()) { shardMBean.incrementReadWriteTransactionCount(); return getContext().actorOf( - ShardTransaction.props(store.newReadWriteTransaction(), getSelf(), - schemaContext, datastoreContext,name.toString()), transactionId.toString()); + ShardTransaction.props(factory.newReadWriteTransaction(), getSelf(), + schemaContext, datastoreContext, shardMBean), transactionId.toString()); - } else if (createTransaction.getTransactionType() + } else if (transactionType == TransactionProxy.TransactionType.WRITE_ONLY.ordinal()) { shardMBean.incrementWriteOnlyTransactionCount(); return getContext().actorOf( - ShardTransaction.props(store.newWriteOnlyTransaction(), getSelf(), - schemaContext, datastoreContext, name.toString()), transactionId.toString()); + ShardTransaction.props(factory.newWriteOnlyTransaction(), getSelf(), + schemaContext, datastoreContext, shardMBean), transactionId.toString()); } else { throw new IllegalArgumentException( "Shard="+name + ":CreateTransaction message has unidentified transaction type=" - + createTransaction.getTransactionType()); + + transactionType); } } private void createTransaction(CreateTransaction createTransaction) { + createTransaction(createTransaction.getTransactionType(), + createTransaction.getTransactionId(), createTransaction.getTransactionChainId()); + } + + private ActorRef createTransaction(int transactionType, String remoteTransactionId, String transactionChainId) { ShardTransactionIdentifier transactionId = ShardTransactionIdentifier.builder() - .remoteTransactionId(createTransaction.getTransactionId()) + .remoteTransactionId(remoteTransactionId) .build(); - LOG.debug("Creating transaction : {} ", transactionId); + if(LOG.isDebugEnabled()) { + LOG.debug("Creating transaction : {} ", transactionId); + } ActorRef transactionActor = - createTypedTransactionActor(createTransaction, transactionId); + createTypedTransactionActor(transactionType, transactionId, transactionChainId); getSender() .tell(new CreateTransactionReply( Serialization.serializedActorPath(transactionActor), - createTransaction.getTransactionId()).toSerializable(), + remoteTransactionId).toSerializable(), getSelf()); + + return transactionActor; } + private void syncCommitTransaction(DOMStoreWriteTransaction transaction) + throws ExecutionException, InterruptedException { + DOMStoreThreePhaseCommitCohort commitCohort = transaction.ready(); + commitCohort.preCommit().get(); + commitCohort.commit().get(); + } + + private void commit(final ActorRef sender, Object serialized) { Modification modification = MutableCompositeModification .fromSerializable(serialized, schemaContext); DOMStoreThreePhaseCommitCohort cohort = modificationToCohort.remove(serialized); if (cohort == null) { - LOG.debug( - "Could not find cohort for modification : {}. Writing modification using a new transaction", - modification); - DOMStoreReadWriteTransaction transaction = - store.newReadWriteTransaction(); - modification.apply(transaction); - DOMStoreThreePhaseCommitCohort commitCohort = transaction.ready(); - ListenableFuture future = - commitCohort.preCommit(); - try { - future.get(); - future = commitCohort.commit(); - future.get(); - } catch (InterruptedException | ExecutionException e) { - shardMBean.incrementFailedTransactionsCount(); - LOG.error("Failed to commit", e); - return; - } - //we want to just apply the recovery commit and return - shardMBean.incrementCommittedTransactionCount(); + // If there's no cached cohort then we must be applying replicated state. + commitWithNewTransaction(serialized); + return; + } + + if(sender == null) { + LOG.error("Commit failed. Sender cannot be null"); return; } - final ListenableFuture future = cohort.commit(); - final ActorRef self = getSelf(); + ListenableFuture future = cohort.commit(); Futures.addCallback(future, new FutureCallback() { @Override public void onSuccess(Void v) { - sender.tell(new CommitTransactionReply().toSerializable(),self); - shardMBean.incrementCommittedTransactionCount(); - shardMBean.setLastCommittedTransactionTime(new Date()); + sender.tell(new CommitTransactionReply().toSerializable(), getSelf()); + shardMBean.incrementCommittedTransactionCount(); + shardMBean.setLastCommittedTransactionTime(System.currentTimeMillis()); } @Override public void onFailure(Throwable t) { LOG.error(t, "An exception happened during commit"); shardMBean.incrementFailedTransactionsCount(); - sender.tell(new akka.actor.Status.Failure(t), self); + sender.tell(new akka.actor.Status.Failure(t), getSelf()); } }); } + private void commitWithNewTransaction(Object modification) { + DOMStoreWriteTransaction tx = store.newWriteOnlyTransaction(); + MutableCompositeModification.fromSerializable(modification, schemaContext).apply(tx); + try { + syncCommitTransaction(tx); + shardMBean.incrementCommittedTransactionCount(); + } catch (InterruptedException | ExecutionException e) { + shardMBean.incrementFailedTransactionsCount(); + LOG.error(e, "Failed to commit"); + } + } + private void handleForwardedCommit(ForwardedCommitTransaction message) { Object serializedModification = message.getModification().toSerializable(); @@ -298,14 +395,21 @@ public class Shard extends RaftActor { private void updateSchemaContext(UpdateSchemaContext message) { this.schemaContext = message.getSchemaContext(); + updateSchemaContext(message.getSchemaContext()); store.onGlobalContextUpdated(message.getSchemaContext()); } + @VisibleForTesting void updateSchemaContext(SchemaContext schemaContext) { + store.onGlobalContextUpdated(schemaContext); + } + private void registerChangeListener( RegisterChangeListener registerChangeListener) { - LOG.debug("registerDataChangeListener for {}", registerChangeListener - .getPath()); + if(LOG.isDebugEnabled()) { + LOG.debug("registerDataChangeListener for {}", registerChangeListener + .getPath()); + } ActorSelection dataChangeListenerPath = getContext() @@ -333,44 +437,118 @@ public class Shard extends RaftActor { getContext().actorOf( DataChangeListenerRegistration.props(registration)); - LOG.debug( - "registerDataChangeListener sending reply, listenerRegistrationPath = {} " - , listenerRegistration.path().toString()); + if(LOG.isDebugEnabled()) { + LOG.debug( + "registerDataChangeListener sending reply, listenerRegistrationPath = {} " + , listenerRegistration.path().toString()); + } getSender() .tell(new RegisterChangeListenerReply(listenerRegistration.path()), getSelf()); } - private void createTransactionChain() { - DOMStoreTransactionChain chain = store.createTransactionChain(); - ActorRef transactionChain = getContext().actorOf( - ShardTransactionChain.props(chain, schemaContext, datastoreContext,name.toString() )); - getSender().tell(new CreateTransactionChainReply(transactionChain.path()).toSerializable(), - getSelf()); + private boolean isMetricsCaptureEnabled(){ + CommonConfig config = new CommonConfig(getContext().system().settings().config()); + return config.isMetricCaptureEnabled(); + } + + @Override + protected + void startLogRecoveryBatch(int maxBatchSize) { + currentLogRecoveryBatch = Lists.newArrayListWithCapacity(maxBatchSize); + + if(LOG.isDebugEnabled()) { + LOG.debug("{} : starting log recovery batch with max size {}", persistenceId(), maxBatchSize); + } + } + + @Override + protected void appendRecoveredLogEntry(Payload data) { + if (data instanceof CompositeModificationPayload) { + currentLogRecoveryBatch.add(((CompositeModificationPayload) data).getModification()); + } else { + LOG.error("Unknown state received {} during recovery", data); + } + } + + @Override + protected void applyRecoverySnapshot(ByteString snapshot) { + if(recoveryCoordinator == null) { + recoveryCoordinator = new ShardRecoveryCoordinator(persistenceId(), schemaContext); + } + + recoveryCoordinator.submit(snapshot, store.newWriteOnlyTransaction()); + + if(LOG.isDebugEnabled()) { + LOG.debug("{} : submitted recovery sbapshot", persistenceId()); + } } - @Override protected void applyState(ActorRef clientActor, String identifier, - Object data) { + @Override + protected void applyCurrentLogRecoveryBatch() { + if(recoveryCoordinator == null) { + recoveryCoordinator = new ShardRecoveryCoordinator(persistenceId(), schemaContext); + } + + recoveryCoordinator.submit(currentLogRecoveryBatch, store.newWriteOnlyTransaction()); + + if(LOG.isDebugEnabled()) { + LOG.debug("{} : submitted log recovery batch with size {}", persistenceId(), + currentLogRecoveryBatch.size()); + } + } + + @Override + protected void onRecoveryComplete() { + if(recoveryCoordinator != null) { + Collection txList = recoveryCoordinator.getTransactions(); + + if(LOG.isDebugEnabled()) { + LOG.debug("{} : recovery complete - committing {} Tx's", persistenceId(), txList.size()); + } + + for(DOMStoreWriteTransaction tx: txList) { + try { + syncCommitTransaction(tx); + shardMBean.incrementCommittedTransactionCount(); + } catch (InterruptedException | ExecutionException e) { + shardMBean.incrementFailedTransactionsCount(); + LOG.error(e, "Failed to commit"); + } + } + } + + recoveryCoordinator = null; + currentLogRecoveryBatch = null; + updateJournalStats(); + } + + @Override + protected void applyState(ActorRef clientActor, String identifier, Object data) { if (data instanceof CompositeModificationPayload) { - Object modification = - ((CompositeModificationPayload) data).getModification(); + Object modification = ((CompositeModificationPayload) data).getModification(); if (modification != null) { commit(clientActor, modification); } else { LOG.error( "modification is null - this is very unexpected, clientActor = {}, identifier = {}", - identifier, clientActor.path().toString()); + identifier, clientActor != null ? clientActor.path().toString() : null); } - } else { - LOG.error("Unknown state received {}", data); + LOG.error("Unknown state received {} Class loader = {} CompositeNodeMod.ClassLoader = {}", + data, data.getClass().getClassLoader(), + CompositeModificationPayload.class.getClassLoader()); } - // Update stats + updateJournalStats(); + + } + + private void updateJournalStats() { ReplicatedLogEntry lastLogEntry = getLastLogEntry(); if (lastLogEntry != null) { @@ -380,15 +558,49 @@ public class Shard extends RaftActor { shardMBean.setCommitIndex(getCommitIndex()); shardMBean.setLastApplied(getLastApplied()); - } - @Override protected Object createSnapshot() { - throw new UnsupportedOperationException("createSnapshot"); + @Override + protected void createSnapshot() { + if (createSnapshotTransaction == null) { + + // Create a transaction. We are really going to treat the transaction as a worker + // so that this actor does not get block building the snapshot + createSnapshotTransaction = createTransaction( + TransactionProxy.TransactionType.READ_ONLY.ordinal(), + "createSnapshot", ""); + + createSnapshotTransaction.tell( + new ReadData(YangInstanceIdentifier.builder().build()).toSerializable(), self()); + + } } - @Override protected void applySnapshot(Object snapshot) { - throw new UnsupportedOperationException("applySnapshot"); + @VisibleForTesting + @Override + protected void applySnapshot(ByteString snapshot) { + // Since this will be done only on Recovery or when this actor is a Follower + // we can safely commit everything in here. We not need to worry about event notifications + // as they would have already been disabled on the follower + + LOG.info("Applying snapshot"); + try { + DOMStoreWriteTransaction transaction = store.newWriteOnlyTransaction(); + NormalizedNodeMessages.Node serializedNode = NormalizedNodeMessages.Node.parseFrom(snapshot); + NormalizedNode node = new NormalizedNodeToNodeCodec(schemaContext) + .decode(YangInstanceIdentifier.builder().build(), serializedNode); + + // delete everything first + transaction.delete(YangInstanceIdentifier.builder().build()); + + // Add everything from the remote node back + transaction.write(YangInstanceIdentifier.builder().build(), node); + syncCommitTransaction(transaction); + } catch (InvalidProtocolBufferException | InterruptedException | ExecutionException e) { + LOG.error(e, "An exception occurred when applying snapshot"); + } finally { + LOG.info("Done applying snapshot"); + } } @Override protected void onStateChanged() { @@ -397,26 +609,30 @@ public class Shard extends RaftActor { .tell(new EnableNotification(isLeader()), getSelf()); } - if (getLeaderId() != null) { - shardMBean.setLeader(getLeaderId()); - } - shardMBean.setRaftState(getRaftState().name()); shardMBean.setCurrentTerm(getCurrentTerm()); - } - @Override public String persistenceId() { - return this.name.toString(); - } + // If this actor is no longer the leader close all the transaction chains + if(!isLeader()){ + for(Map.Entry entry : transactionChains.entrySet()){ + if(LOG.isDebugEnabled()) { + LOG.debug( + "onStateChanged: Closing transaction chain {} because shard {} is no longer the leader", + entry.getKey(), getId()); + } + entry.getValue().close(); + } + transactionChains.clear(); + } + } - private static class ShardConfigParams extends DefaultConfigParamsImpl { - public static final FiniteDuration HEART_BEAT_INTERVAL = - new FiniteDuration(500, TimeUnit.MILLISECONDS); + @Override protected void onLeaderChanged(String oldLeader, String newLeader) { + shardMBean.setLeader(newLeader); + } - @Override public FiniteDuration getHeartBeatInterval() { - return HEART_BEAT_INTERVAL; - } + @Override public String persistenceId() { + return this.name.toString(); } private static class ShardCreator implements Creator { @@ -426,17 +642,50 @@ public class Shard extends RaftActor { final ShardIdentifier name; final Map peerAddresses; final DatastoreContext datastoreContext; + final SchemaContext schemaContext; ShardCreator(ShardIdentifier name, Map peerAddresses, - DatastoreContext datastoreContext) { + DatastoreContext datastoreContext, SchemaContext schemaContext) { this.name = name; this.peerAddresses = peerAddresses; this.datastoreContext = datastoreContext; + this.schemaContext = schemaContext; } @Override public Shard create() throws Exception { - return new Shard(name, peerAddresses, datastoreContext); + return new Shard(name, peerAddresses, datastoreContext, schemaContext); } } + + @VisibleForTesting + NormalizedNode readStore(YangInstanceIdentifier id) + throws ExecutionException, InterruptedException { + DOMStoreReadTransaction transaction = store.newReadOnlyTransaction(); + + CheckedFuture>, ReadFailedException> future = + transaction.read(id); + + Optional> optional = future.get(); + NormalizedNode node = optional.isPresent()? optional.get() : null; + + transaction.close(); + + return node; + } + + @VisibleForTesting + void writeToStore(YangInstanceIdentifier id, NormalizedNode node) + throws ExecutionException, InterruptedException { + DOMStoreWriteTransaction transaction = store.newWriteOnlyTransaction(); + + transaction.write(id, node); + + syncCommitTransaction(transaction); + } + + @VisibleForTesting + ShardStats getShardMBean() { + return shardMBean; + } }