import akka.dispatch.ExecutionContexts;
import akka.dispatch.Futures;
import akka.dispatch.Recover;
-import akka.japi.Function;
import akka.pattern.Patterns;
import akka.util.Timeout;
import com.google.common.base.Preconditions;
import scala.concurrent.Future;
/**
- *
* Composite cohort, which coordinates multiple user-provided cohorts as if it was only one cohort.
- *
+ * <p/>
* It tracks current operation and list of cohorts which successfuly finished previous phase in
* case, if abort is necessary to invoke it only on cohort steps which are still active.
*
COMMITED,
/**
* Some of cohorts responsed back with unsuccessful message.
- *
*/
FAILED,
/**
- *
* Abort message was send to all cohorts which responded with success previously.
- *
*/
ABORTED
}
void canCommit(final DataTreeCandidate tip) throws ExecutionException, TimeoutException {
Collection<CanCommit> messages = registry.createCanCommitMessages(txId, tip, schema);
// FIXME: Optimize empty collection list with pre-created futures, containing success.
- Future<Iterable<Object>> canCommitsFuture =
- Futures.traverse(messages, new Function<CanCommit, Future<Object>>() {
- @Override
- public Future<Object> apply(final CanCommit input) {
- return Patterns.ask(input.getCohort(), input, timeout).recover(EXCEPTION_TO_MESSAGE,
- ExecutionContexts.global());
- }
- }, ExecutionContexts.global());
+ Future<Iterable<Object>> canCommitsFuture = Futures.traverse(messages,
+ input -> Patterns.ask(input.getCohort(), input, timeout).recover(EXCEPTION_TO_MESSAGE,
+ ExecutionContexts.global()), ExecutionContexts.global());
changeStateFrom(State.IDLE, State.CAN_COMMIT_SENT);
processResponses(canCommitsFuture, State.CAN_COMMIT_SENT, State.CAN_COMMIT_SUCCESSFUL);
}
}
private Future<Iterable<Object>> sendMesageToSuccessful(final Object message) {
- return Futures.traverse(successfulFromPrevious, new Function<DataTreeCohortActor.Success, Future<Object>>() {
-
- @Override
- public Future<Object> apply(final DataTreeCohortActor.Success cohortResponse) throws Exception {
- return Patterns.ask(cohortResponse.getCohort(), message, timeout);
- }
-
- }, ExecutionContexts.global());
+ return Futures.traverse(successfulFromPrevious, cohortResponse -> Patterns.ask(
+ cohortResponse.getCohort(), message, timeout), ExecutionContexts.global());
}
- private void processResponses(final Future<Iterable<Object>> resultsFuture, final State currentState, final State afterState)
- throws TimeoutException, ExecutionException {
+ @SuppressWarnings("checkstyle:IllegalCatch")
+ private void processResponses(final Future<Iterable<Object>> resultsFuture, final State currentState,
+ final State afterState) throws TimeoutException, ExecutionException {
final Iterable<Object> results;
try {
results = Await.result(resultsFuture, timeout.duration());