Example usage for com.google.common.util.concurrent Futures transform

Introduction

In this page you can find the example usage for com.google.common.util.concurrent Futures transform.

Prototype

public static <I, O> ListenableFuture<O> transform(ListenableFuture<I> input,
        Function<? super I, ? extends O> function)

Source Link

Document

Returns a new ListenableFuture whose result is the product of applying the given Function to the result of the given Future .

Usage

From source file:com.facebook.buck.util.network.HttpPutLogger.java

@Override
protected ListenableFuture<Void> logMultiple(ImmutableCollection<BatchEntry> data) {
    StringWriter stringWriter = new StringWriter();
    try {// w ww  . ja  v a2s . c  o m
        JsonGenerator jsonGenerator = objectMapper.getFactory().createGenerator(stringWriter);
        jsonGenerator.writeStartArray();
        for (BatchEntry entry : data) {
            jsonGenerator.writeRawValue(entry.getLine());
        }
        jsonGenerator.writeEndArray();
        jsonGenerator.close();
        return Futures.transform(endpoint.post(stringWriter.toString()), new Function<HttpResponse, Void>() {
            @Nullable
            @Override
            public Void apply(HttpResponse input) {
                return null;
            }
        });
    } catch (IOException e) {
        return Futures.immediateFailedFuture(e);
    }
}

From source file:io.v.v23.syncbase.nosql.SyncgroupImpl.java

@Override
public ListenableFuture<Map<String, SyncgroupSpec>> getSpec(VContext ctx) {
    return Futures.transform(dbClient.getSyncgroupSpec(ctx, name),
            new Function<SyncgroupManagerClient.GetSyncgroupSpecOut, Map<String, SyncgroupSpec>>() {
                @Override//from  w  ww. j av a  2  s . c o  m
                public Map<String, SyncgroupSpec> apply(SyncgroupManagerClient.GetSyncgroupSpecOut spec) {
                    return ImmutableMap.of(spec.version, spec.spec);
                }
            });
}

From source file:io.v.impl.google.rpc.ClientCallImpl.java

@Override
public ListenableFuture<Object[]> finish(final Type[] types) {
    ListenableFutureCallback<byte[][]> callback = new ListenableFutureCallback<>();
    nativeFinish(nativeRef, types.length, callback);
    return VFutures.withUserLandChecks(ctx,
            Futures.transform(callback.getVanillaFuture(), new AsyncFunction<byte[][], Object[]>() {
                @Override/*from ww  w .j  av a  2 s . c  o  m*/
                public ListenableFuture<Object[]> apply(byte[][] vomResults) throws Exception {
                    if (vomResults.length != types.length) {
                        throw new VException(String.format("Mismatch in number of results, want %s, have %s",
                                types.length, vomResults.length));
                    }
                    // VOM-decode results.
                    Object[] ret = new Object[types.length];
                    for (int i = 0; i < types.length; i++) {
                        ret[i] = VomUtil.decode(vomResults[i], types[i]);
                    }
                    return Futures.immediateFuture(ret);
                }
            }));
}

From source file:com.facebook.presto.operator.ParallelLookupSourceSupplier.java

public ParallelLookupSourceSupplier(List<Type> types, List<Integer> hashChannels,
        List<? extends ListenableFuture<SharedLookupSource>> partitions) {
    this.types = ImmutableList.copyOf(requireNonNull(types, "types is null"));
    this.partitions = requireNonNull(partitions, "partitions is null");

    hashChannelTypes = hashChannels.stream().map(types::get).collect(toImmutableList());

    checkArgument(Integer.bitCount(partitions.size()) == 1, "partitions must be a power of 2");
    lookupSourceFuture = Futures.transform(Futures.allAsList(partitions), (List<SharedLookupSource> input) -> {
        return new PartitionedLookupSource(input, hashChannelTypes);
    });//from www  .  ja  v  a2 s.co m

}

From source file:us.physion.ovation.ui.browser.UnTrashEntityAction.java

@Override
protected ListenableFuture<Iterable<URI>> call(DataContext c, OvationEntity entity) {
    return Futures.transform(c.restoreFromTrash(entity), new Function<Iterable<UUID>, Iterable<URI>>() {
        @Override//ww  w.  ja  v a2  s. c  o  m
        public Iterable<URI> apply(Iterable<UUID> input) {
            return input == null ? null : Iterables.transform(input, new Function<UUID, URI>() {

                @Override
                public URI apply(UUID input) {
                    return input == null ? null : URIs.create(input);
                }
            });
        }
    });
}

From source file:com.google.gapid.models.Timeline.java

@Override
protected ListenableFuture<List<Event>> doLoad(Path.Any path) {
    return Futures.transform(client.get(path), v -> v.getEvents().getListList());
}

From source file:io.v.v23.syncbase.SyncbaseServiceImpl.java

@Override
public ListenableFuture<Map<String, Permissions>> getPermissions(VContext ctx) {
    ListenableFuture<ServiceClient.GetPermissionsOut> perms = client.getPermissions(ctx);
    return VFutures.withUserLandChecks(ctx,
            Futures.transform(perms, new Function<ServiceClient.GetPermissionsOut, Map<String, Permissions>>() {
                @Override/*ww  w.  j  a v  a 2s  .co  m*/
                public Map<String, Permissions> apply(ServiceClient.GetPermissionsOut perms) {
                    return ImmutableMap.of(perms.version, perms.perms);
                }
            }));
}

From source file:com.facebook.presto.split.BufferingSplitSource.java

@Override
public ListenableFuture<List<Split>> getNextBatch(int maxSize) {
    checkArgument(maxSize > 0, "Cannot fetch a batch of zero size");
    List<Split> result = synchronizedList(new ArrayList<>(maxSize));
    ListenableFuture<?> future = fetchSplits(Math.min(bufferSize, maxSize), maxSize, result);
    return Futures.transform(future, ignored -> ImmutableList.copyOf(result));
}

From source file:com.microsoft.services.orc.core.OrcMediaEntityFetcher.java

public ListenableFuture<byte[]> getContent() {

    Request request = getResolver().createRequest();
    request.setVerb(HttpVerb.GET);/*  w w  w. ja  va 2s.c o m*/
    OrcURL url = request.getUrl();
    url.appendPathComponent("$value");

    ListenableFuture<OrcResponse> future = oDataExecute(request);

    return Futures.transform(future, new AsyncFunction<OrcResponse, byte[]>() {
        @Override
        public ListenableFuture<byte[]> apply(OrcResponse response) throws Exception {
            SettableFuture<byte[]> result = SettableFuture.create();
            result.set(response.getPayload());
            return result;
        }
    });
}

From source file:org.robotninjas.concurrent.FluentFutureTask.java

@Override
public <Y> FluentFuture<Y> transform(AsyncFunction<V, Y> func) {
    return new FluentDecorator<>(Futures.transform(this, func));
}