+ if (message instanceof CreateTransactionChain) {
+ createTransactionChain();
+ } 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 instanceof Persistent) {
+ commit((Persistent) message);
+ } else if (message instanceof CreateTransaction) {
+ createTransaction();
+ }
+ }
+
+ private void createTransaction() {
+ DOMStoreReadWriteTransaction transaction =
+ store.newReadWriteTransaction();
+ ActorRef transactionActor = getContext().actorOf(
+ ShardTransaction.props(transaction, getSelf()));
+ getSender()
+ .tell(new CreateTransactionReply(transactionActor.path()),
+ getSelf());
+ }
+
+ private void commit(Persistent message) {
+ Modification modification = (Modification) message.payload();
+ DOMStoreThreePhaseCommitCohort cohort =
+ modificationToCohort.remove(modification);
+ if (cohort == null) {
+ log.error(
+ "Could not find cohort for modification : " + modification);
+ return;
+ }
+ final ListenableFuture<Void> future = cohort.commit();
+ final ActorRef sender = getSender();
+ final ActorRef self = getSelf();
+ future.addListener(new Runnable() {
+ @Override
+ public void run() {
+ try {
+ future.get();
+ sender.tell(new CommitTransactionReply(), self);
+ } catch (InterruptedException | ExecutionException e) {
+ log.error(e, "An exception happened when committing");
+ }
+ }
+ }, getContext().dispatcher());
+ }
+
+ private void handleForwardedCommit(ForwardedCommitTransaction message) {
+ log.info("received forwarded transaction");
+ modificationToCohort
+ .put(message.getModification(), message.getCohort());
+ getSelf().forward(Persistent.create(message.getModification()),
+ getContext());
+ }