+ });
+ }
+
+
+ @Override public void onReceiveCommand(Object message) {
+ LOG.debug("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());
+ }
+ } else if (message instanceof RegisterChangeListener) {
+ registerChangeListener((RegisterChangeListener) message);
+ } else if (message instanceof UpdateSchemaContext) {
+ updateSchemaContext((UpdateSchemaContext) message);
+ } else if (message instanceof ForwardedCommitTransaction) {
+ handleForwardedCommit((ForwardedCommitTransaction) message);
+ } else if (message.getClass()
+ .equals(CreateTransaction.SERIALIZABLE_CLASS)) {
+ if (isLeader()) {
+ createTransaction(CreateTransaction.fromSerializable(message));
+ } else if (getLeader() != null) {
+ getLeader().forward(message, getContext());
+ }
+ } else if (message instanceof PeerAddressResolved) {
+ PeerAddressResolved resolved = (PeerAddressResolved) message;
+ setPeerAddress(resolved.getPeerId(), resolved.getPeerAddress());
+ } else {
+ super.onReceiveCommand(message);
+ }
+ }
+
+ private ActorRef createTypedTransactionActor(
+ CreateTransaction createTransaction, String transactionId) {
+ if (createTransaction.getTransactionType()
+ == TransactionProxy.TransactionType.READ_ONLY.ordinal()) {
+ shardMBean.incrementReadOnlyTransactionCount();
+ return getContext().actorOf(
+ ShardTransaction
+ .props(store.newReadOnlyTransaction(), getSelf(),
+ schemaContext), transactionId);
+
+ } else if (createTransaction.getTransactionType()
+ == TransactionProxy.TransactionType.READ_WRITE.ordinal()) {
+ shardMBean.incrementReadWriteTransactionCount();
+ return getContext().actorOf(
+ ShardTransaction
+ .props(store.newReadWriteTransaction(), getSelf(),
+ schemaContext), transactionId);
+
+
+ } else if (createTransaction.getTransactionType()
+ == TransactionProxy.TransactionType.WRITE_ONLY.ordinal()) {
+ shardMBean.incrementWriteOnlyTransactionCount();
+ return getContext().actorOf(
+ ShardTransaction
+ .props(store.newWriteOnlyTransaction(), getSelf(),
+ schemaContext), transactionId);
+ } else {
+ throw new IllegalArgumentException(
+ "CreateTransaction message has unidentified transaction type="
+ + createTransaction.getTransactionType());
+ }
+ }
+
+ private void createTransaction(CreateTransaction createTransaction) {
+
+ String transactionId = "shard-" + createTransaction.getTransactionId();
+ LOG.info("Creating transaction : {} ", transactionId);
+ ActorRef transactionActor =
+ createTypedTransactionActor(createTransaction, transactionId);
+
+ getSender()
+ .tell(new CreateTransactionReply(
+ Serialization.serializedActorPath(transactionActor),
+ createTransaction.getTransactionId()).toSerializable(),
+ getSelf()
+ );
+ }
+
+ private void commit(final ActorRef sender, Object serialized) {
+ Modification modification =
+ MutableCompositeModification.fromSerializable(
+ serialized, schemaContext);
+ DOMStoreThreePhaseCommitCohort cohort =
+ modificationToCohort.remove(serialized);
+ if (cohort == null) {
+ LOG.error(
+ "Could not find cohort for modification : {}", modification);
+ LOG.info("Writing modification using a new transaction");
+ DOMStoreReadWriteTransaction transaction =
+ store.newReadWriteTransaction();
+ modification.apply(transaction);
+ DOMStoreThreePhaseCommitCohort commitCohort = transaction.ready();
+ ListenableFuture<Void> future =
+ commitCohort.preCommit();
+ try {
+ future.get();
+ future = commitCohort.commit();
+ future.get();
+ } catch (InterruptedException e) {
+ LOG.error("Failed to commit", e);
+ } catch (ExecutionException e) {
+ LOG.error("Failed to commit", e);
+ }
+ }
+
+ final ListenableFuture<Void> future = cohort.commit();
+ shardMBean.incrementCommittedTransactionCount();
+ final ActorRef self = getSelf();
+ future.addListener(new Runnable() {
+ @Override
+ public void run() {
+ try {
+ future.get();
+
+ if (sender != null) {
+ sender
+ .tell(new CommitTransactionReply().toSerializable(),
+ self);
+ } else {
+ LOG.error("sender is null ???");
+ }
+ } catch (InterruptedException | ExecutionException e) {
+ // FIXME : Handle this properly
+ LOG.error(e, "An exception happened when committing");
+ }
+ }
+ }, getContext().dispatcher());
+ }
+
+ private void handleForwardedCommit(ForwardedCommitTransaction message) {
+ Object serializedModification =
+ message.getModification().toSerializable();
+
+ modificationToCohort
+ .put(serializedModification, message.getCohort());
+
+ if (persistent) {
+ this.persistData(getSender(), "identifier",
+ new CompositeModificationPayload(serializedModification));
+ } else {
+ this.commit(getSender(), serializedModification);
+ }
+ }
+
+ private void updateSchemaContext(UpdateSchemaContext message) {
+ this.schemaContext = message.getSchemaContext();
+ store.onGlobalContextUpdated(message.getSchemaContext());
+ }
+
+ private void registerChangeListener(
+ RegisterChangeListener registerChangeListener) {
+
+ LOG.debug("registerDataChangeListener for " + registerChangeListener
+ .getPath());
+
+
+ ActorSelection dataChangeListenerPath = getContext()
+ .system().actorSelection(
+ registerChangeListener.getDataChangeListenerPath());
+
+
+ // Notify the listener if notifications should be enabled or not
+ // If this shard is the leader then it will enable notifications else
+ // it will not
+ dataChangeListenerPath
+ .tell(new EnableNotification(isLeader()), getSelf());
+
+ // Now store a reference to the data change listener so it can be notified
+ // at a later point if notifications should be enabled or disabled
+ dataChangeListeners.add(dataChangeListenerPath);
+
+ AsyncDataChangeListener<YangInstanceIdentifier, NormalizedNode<?, ?>>
+ listener =
+ new DataChangeListenerProxy(schemaContext, dataChangeListenerPath);
+
+ org.opendaylight.yangtools.concepts.ListenerRegistration<AsyncDataChangeListener<YangInstanceIdentifier, NormalizedNode<?, ?>>>
+ registration =
+ store.registerChangeListener(registerChangeListener.getPath(),
+ listener, registerChangeListener.getScope());
+ ActorRef listenerRegistration =
+ getContext().actorOf(
+ DataChangeListenerRegistration.props(registration));
+
+ 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));
+ getSender()
+ .tell(new CreateTransactionChainReply(transactionChain.path())
+ .toSerializable(),
+ getSelf()
+ );
+ }
+
+ @Override protected void applyState(ActorRef clientActor, String identifier,
+ Object data) {
+
+ if (data instanceof CompositeModificationPayload) {
+ Object modification =
+ ((CompositeModificationPayload) data).getModification();
+
+ if (modification != null) {
+ commit(clientActor, modification);
+ } else {
+ LOG.error("modification is null - this is very unexpected");
+ }
+
+
+ } else {
+ LOG.error("Unknown state received {}", data);
+ }
+
+ ReplicatedLogEntry lastLogEntry = getLastLogEntry();
+
+ if(lastLogEntry != null){
+ shardMBean.setLastLogIndex(lastLogEntry.getIndex());
+ shardMBean.setLastLogTerm(lastLogEntry.getTerm());
+ }
+
+ shardMBean.setCommitIndex(getCommitIndex());
+ shardMBean.setLastApplied(getLastApplied());
+
+ }
+
+ @Override protected Object createSnapshot() {
+ throw new UnsupportedOperationException("createSnapshot");
+ }
+
+ @Override protected void applySnapshot(Object snapshot) {
+ throw new UnsupportedOperationException("applySnapshot");
+ }
+
+ @Override protected void onStateChanged() {
+ for (ActorSelection dataChangeListener : dataChangeListeners) {
+ dataChangeListener
+ .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;
+ }
+
+
+ private static class ShardConfigParams extends DefaultConfigParamsImpl {
+ public static final FiniteDuration HEART_BEAT_INTERVAL =
+ new FiniteDuration(500, TimeUnit.MILLISECONDS);
+
+ @Override public FiniteDuration getHeartBeatInterval() {
+ return HEART_BEAT_INTERVAL;
+ }
+ }