- // If there were any previous recorded put/merge/delete operation reply Futures then we
- // must wait for them to successfully complete. This is necessary to honor the read
- // uncommitted semantics of the public API contract. If any one fails then fail the read.
-
- if(recordedOperationFutures.isEmpty()) {
- finishReadData(path, returnFuture);
- } else {
- LOG.debug("Tx {} readData: verifying {} previous recorded operations",
- identifier, recordedOperationFutures.size());
-
- // Note: we make a copy of recordedOperationFutures to be on the safe side in case
- // Futures#sequence accesses the passed List on a different thread, as
- // recordedOperationFutures is not synchronized.
-
- Future<Iterable<Object>> combinedFutures = akka.dispatch.Futures.sequence(
- Lists.newArrayList(recordedOperationFutures),
- actorContext.getClientDispatcher());
-
- OnComplete<Iterable<Object>> onComplete = new OnComplete<Iterable<Object>>() {
- @Override
- public void onComplete(Throwable failure, Iterable<Object> notUsed)
- throws Throwable {
- if(failure != null) {
- LOG.debug("Tx {} readData: a recorded operation failed: {}",
- identifier, failure);
- returnFuture.setException(new ReadFailedException(
- "The read could not be performed because a previous put, merge,"
- + "or delete operation failed", failure));
- } else {
- finishReadData(path, returnFuture);
- }
- }
- };
-
- combinedFutures.onComplete(onComplete, actorContext.getClientDispatcher());
- }
-
- }
-
- private void finishReadData(final YangInstanceIdentifier path,
- final SettableFuture<Optional<NormalizedNode<?, ?>>> returnFuture) {
-
- LOG.debug("Tx {} finishReadData called path = {}", identifier, path);
-