Example usage for java.util.concurrent CompletableFuture completedFuture

Introduction

In this page you can find the example usage for java.util.concurrent CompletableFuture completedFuture.

Prototype

public static <U> CompletableFuture<U> completedFuture(U value)

Source Link

Document

Returns a new CompletableFuture that is already completed with the given value.

Usage

From source file:io.pravega.controller.store.stream.InMemoryStream.java

@Override
CompletableFuture<Void> createHistoryTableIfAbsent(Data<Integer> data) {
    Preconditions.checkNotNull(data);/*from ww w . j  a  v a2  s  .c o  m*/
    Preconditions.checkNotNull(data.getData());

    CompletableFuture<Void> result = new CompletableFuture<>();

    synchronized (lock) {
        if (historyTable == null) {
            historyTable = new Data<>(Arrays.copyOf(data.getData(), data.getData().length), 0);
        }
    }
    return CompletableFuture.completedFuture(null);
}

From source file:com.ikanow.aleph2.data_model.interfaces.shared_services.MockManagementCrudService.java

@Override
public ManagementFuture<Boolean> deleteObjectBySpec(QueryComponent<T> spec) {
    if (!_mutable_values.isEmpty()) {
        _mutable_values.remove(0);//from   www .  j a v  a  2  s . co m
        return FutureUtils.createManagementFuture(CompletableFuture.completedFuture(true));
    } else {
        return FutureUtils.createManagementFuture(CompletableFuture.completedFuture(false));
    }
}

From source file:com.yahoo.pulsar.broker.namespace.NamespaceServiceTest.java

@SuppressWarnings("unchecked")
private Pair<NamespaceBundles, List<NamespaceBundle>> splitBundles(NamespaceBundleFactory utilityFactory,
        NamespaceName nsname, NamespaceBundles bundles, NamespaceBundle targetBundle) throws Exception {
    Field bCacheField = NamespaceBundleFactory.class.getDeclaredField("bundlesCache");
    bCacheField.setAccessible(true);//from ww  w .ja  v  a  2s  .c om
    ((AsyncLoadingCache<NamespaceName, NamespaceBundles>) bCacheField.get(utilityFactory)).put(nsname,
            CompletableFuture.completedFuture(bundles));
    return utilityFactory.splitBundles(targetBundle, 2);
}

From source file:com.ikanow.aleph2.harvest.logstash.services.LogstashHarvestService.java

@Override
public CompletableFuture<BasicMessageBean> onHarvestComplete(DataBucketBean completed_bucket,
        IHarvestContext context) {/*ww  w.  j a va2 s .  c o  m*/
    return CompletableFuture.completedFuture(
            ErrorUtils.buildMessage(true, this.getClass().getSimpleName(), "onHarvestComplete", "NYI"));
}

From source file:com.ikanow.aleph2.graph.titan.services.TitanGraphService.java

@Override
public CompletableFuture<BasicMessageBean> switchCrudServiceToPrimaryBuffer(DataBucketBean bucket,
        Optional<String> secondary_buffer, Optional<String> new_name_for_ex_primary,
        Optional<String> intermediate_step) {
    return CompletableFuture.completedFuture(ErrorUtils.buildErrorMessage(this.getClass().getSimpleName(),
            "switchCrudServiceToPrimaryBuffer", ErrorUtils.BUFFERS_NOT_SUPPORTED, bucket.full_name()));
}

From source file:com.ikanow.aleph2.data_model.interfaces.shared_services.MockManagementCrudService.java

@Override
public ManagementFuture<Long> deleteObjectsBySpec(QueryComponent<T> spec) {
    final int curr_size = _mutable_values.size();
    _mutable_values.clear();/*from  w  w  w .  j av  a2  s .  c om*/
    return FutureUtils.createManagementFuture(CompletableFuture.completedFuture((long) curr_size));
}

From source file:io.pravega.controller.server.eventProcessor.ControllerEventProcessors.java

private CompletableFuture<Void> handleOrphanedReaders(
        final EventProcessorGroup<? extends ControllerEvent> group, final Supplier<Set<String>> processes) {
    return withRetriesAsync(() -> CompletableFuture.supplyAsync(() -> {
        try {//from  ww w  . j a v  a2  s.  com
            return group.getProcesses();
        } catch (CheckpointStoreException e) {
            if (e.getType().equals(CheckpointStoreException.Type.NoNode)) {
                return Collections.<String>emptySet();
            }
            throw new CompletionException(e);
        }
    }, executor), RETRYABLE_PREDICATE, Integer.MAX_VALUE, executor)
            .thenComposeAsync(groupProcesses -> withRetriesAsync(() -> CompletableFuture.supplyAsync(() -> {
                try {
                    return new ImmutablePair<>(processes.get(), groupProcesses);
                } catch (Exception e) {
                    log.error(String.format("Error fetching current processes%s", group.toString()), e);
                    throw new CompletionException(e);
                }
            }, executor), RETRYABLE_PREDICATE, Integer.MAX_VALUE, executor)).thenComposeAsync(pair -> {
                Set<String> activeProcesses = pair.getLeft();
                Set<String> registeredProcesses = pair.getRight();

                if (registeredProcesses == null || registeredProcesses.isEmpty()) {
                    return CompletableFuture.completedFuture(null);
                }

                if (activeProcesses != null) {
                    registeredProcesses.removeAll(activeProcesses);
                }

                List<CompletableFuture<Void>> futureList = new ArrayList<>();
                for (String process : registeredProcesses) {
                    futureList.add(withRetriesAsync(() -> CompletableFuture.runAsync(() -> {
                        try {
                            group.notifyProcessFailure(process);
                        } catch (CheckpointStoreException e) {
                            log.error(String.format(
                                    "Error notifying failure of process=%s in event processor group %s",
                                    process, group.toString()), e);
                            throw new CompletionException(e);
                        }
                    }, executor), RETRYABLE_PREDICATE, Integer.MAX_VALUE, executor));
                }

                return FutureHelpers.allOf(futureList);
            });
}

From source file:com.ikanow.aleph2.data_model.interfaces.shared_services.MockManagementCrudService.java

@Override
public ManagementFuture<Boolean> deleteDatastore() {
    _mutable_values.clear();
    return FutureUtils.createManagementFuture(CompletableFuture.completedFuture(true));
}

From source file:com.ikanow.aleph2.aleph2_rest_utils.SharedLibraryCrudServiceWrapper.java

@Override
public CompletableFuture<Boolean> deleteObjectById(Object id) {
    //delete from shared lib, then delete from filesys
    //have to get shared lib entry, so we know where the file is on filesys
    final Optional<SharedLibraryBean> shared_library_bean = shared_library_crud.getObjectById(id).join();
    return shared_library_bean.map(slb -> {
        return shared_library_crud.deleteObjectById(id).<Boolean>thenCompose(f -> {
            if (f) {
                final Tuple2<ICrudService<FileDescriptor>, FileDescriptor> storage = getSharedLibraryDataStore(
                        service_context, slb.path_name(), new FileDescriptor(null, null));
                return storage._1.deleteObjectById(storage._2.file_name());
            } else {
                return CompletableFuture.completedFuture(f); //false, shared object delete must have failed
            }/*from  ww w  .j  a  v  a2s.c  o m*/
        });
    }).orElseGet(() -> CompletableFuture.completedFuture(false));
}

From source file:com.ikanow.aleph2.example.flume_harvester.services.FlumeHarvestTechnology.java

@Override
public CompletableFuture<BasicMessageBean> onPurge(DataBucketBean to_purge, IHarvestContext context) {

    // Do nothing: this isn't like logstash where the files persist, you have to copy new files in anyway

    return CompletableFuture.completedFuture(
            new BasicMessageBean(new Date(), true, "onPurge", "onPurge", null, "No action taken", null));
}