+ private final ActorRef shardActor;
+
+ private final DOMStoreReadWriteTransaction transaction;
+
+ private final MutableCompositeModification modification =
+ new MutableCompositeModification();
+
+ private final LoggingAdapter log =
+ Logging.getLogger(getContext().system(), this);
+
+ public ShardTransaction(DOMStoreReadWriteTransaction transaction,
+ ActorRef shardActor) {
+ this.transaction = transaction;
+ this.shardActor = shardActor;
+ }
+
+
+ public static Props props(final DOMStoreReadWriteTransaction transaction,
+ final ActorRef shardActor) {
+ return Props.create(new Creator<ShardTransaction>() {
+
+ @Override
+ public ShardTransaction create() throws Exception {
+ return new ShardTransaction(transaction, shardActor);
+ }
+ });
+ }
+
+ @Override
+ public void onReceive(Object message) throws Exception {
+ log.debug("Received message {}", message);
+
+ if (message instanceof ReadData) {
+ readData((ReadData) message);
+ } else if (message instanceof WriteData) {
+ writeData((WriteData) message);
+ } else if (message instanceof MergeData) {
+ mergeData((MergeData) message);
+ } else if (message instanceof DeleteData) {
+ deleteData((DeleteData) message);
+ } else if (message instanceof ReadyTransaction) {
+ readyTransaction((ReadyTransaction) message);
+ } else if (message instanceof CloseTransaction) {
+ closeTransaction((CloseTransaction) message);
+ } else if (message instanceof GetCompositedModification) {
+ // This is here for testing only
+ getSender().tell(new GetCompositeModificationReply(
+ new ImmutableCompositeModification(modification)), getSelf());
+ }
+ }
+
+ private void readData(ReadData message) {
+ final ActorRef sender = getSender();
+ final ActorRef self = getSelf();
+ final InstanceIdentifier path = message.getPath();
+ final ListenableFuture<Optional<NormalizedNode<?, ?>>> future =
+ transaction.read(path);
+
+ future.addListener(new Runnable() {
+ @Override
+ public void run() {
+ try {
+ Optional<NormalizedNode<?, ?>> optional = future.get();
+ if (optional.isPresent()) {
+ sender.tell(new ReadDataReply(optional.get()), self);
+ } else {
+ //TODO : Need to decide what to do here
+ }
+ } catch (InterruptedException | ExecutionException e) {
+ log.error(e,
+ "An exception happened when reading data from path : "
+ + path.toString());
+ }
+
+ }
+ }, getContext().dispatcher());
+ }
+
+
+ private void writeData(WriteData message) {
+ modification.addModification(
+ new WriteModification(message.getPath(), message.getData()));
+ transaction.write(message.getPath(), message.getData());
+ getSender().tell(new WriteDataReply(), getSelf());
+ }
+
+ private void mergeData(MergeData message) {
+ modification.addModification(
+ new MergeModification(message.getPath(), message.getData()));
+ transaction.merge(message.getPath(), message.getData());
+ getSender().tell(new MergeDataReply(), getSelf());
+ }
+
+ private void deleteData(DeleteData message) {
+ modification.addModification(new DeleteModification(message.getPath()));
+ transaction.delete(message.getPath());
+ getSender().tell(new DeleteDataReply(), getSelf());
+ }
+
+ private void readyTransaction(ReadyTransaction message) {
+ DOMStoreThreePhaseCommitCohort cohort = transaction.ready();
+ ActorRef cohortActor = getContext().actorOf(
+ ThreePhaseCommitCohort.props(cohort, shardActor, modification));
+ getSender()
+ .tell(new ReadyTransactionReply(cohortActor.path()), getSelf());
+
+ }
+
+ private void closeTransaction(CloseTransaction message) {
+ transaction.close();
+ getSender().tell(new CloseTransactionReply(), getSelf());
+ }
+
+
+ // These classes are in here for test purposes only
+
+
+ static class GetCompositedModification {
+
+ }
+