Example usage for java.util UUID getMostSignificantBits

Introduction

In this page you can find the example usage for java.util UUID getMostSignificantBits.

Prototype

public long getMostSignificantBits() 

Source Link

Document

Returns the most significant 64 bits of this UUID's 128 bit value.

Usage

From source file:natalia.dymnikova.cluster.scheduler.impl.AkkaBackedScheduler.java

private String makeFlowName(String descriptor) {
    final UUID uuid = UUID.randomUUID();
    return format("%s%016x%016x", descriptor, uuid.getMostSignificantBits(), uuid.getLeastSignificantBits());
}

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From source file:ro.kuberam.libs.java.crypto.CryptoModuleTests.java

@Test
public void uuid5NewTest() throws Exception {
    final String NameSpace_OID_string = "6ba7b812-9dad-11d1-80b4-00c04fd430c8";
    final UUID NameSpace_OID_uuid = UUID.fromString(NameSpace_OID_string);

    final long msb = NameSpace_OID_uuid.getMostSignificantBits();
    final long lsb = NameSpace_OID_uuid.getLeastSignificantBits();

    final byte[] NameSpace_OID_buffer = new byte[16];

    for (int i = 0; i < 8; i++) {
        NameSpace_OID_buffer[i] = (byte) (msb >>> 8 * (7 - i));
    }/*from   w w  w .  jav a 2  s  .com*/
    for (int i = 8; i < 16; i++) {
        NameSpace_OID_buffer[i] = (byte) (lsb >>> 8 * (7 - i));
    }

    final String name = "user123";
    final byte[] name_buffer = name.getBytes();

    try (final ByteArrayOutputStream outputStream = new ByteArrayOutputStream()) {
        outputStream.write(NameSpace_OID_buffer);
        outputStream.write(name_buffer);

        final byte byteArray[] = outputStream.toByteArray();
        System.out.println(UUID.nameUUIDFromBytes(byteArray).toString());
    } catch (final IOException e) {
        // TODO Auto-generated catch block
        e.printStackTrace();
    }
}

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From source file:com.github.sebhoss.identifier.service.SuppliedIdentifiers.java

private String convertUuidToBase64(final UUID uuid) {
    final ByteBuffer bb = ByteBuffer.wrap(new byte[16]);
    bb.putLong(uuid.getMostSignificantBits());
    bb.putLong(uuid.getLeastSignificantBits());
    return removePadding(encoder.encodeToString(bb.array()));
}

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From source file:org.apache.cassandra.db.marshal.TypeCompareTest.java

License:asdf

@Test
public void testTimeUUID() {
    // two different UUIDs w/ the same timestamp
    UUID uuid1 = UUID.fromString("1077e700-c7f2-11de-86d5-f5bcc793a028");
    byte[] bytes1 = new byte[16];
    ByteBuffer bb1 = ByteBuffer.wrap(bytes1);
    bb1.putLong(uuid1.getMostSignificantBits());
    bb1.putLong(uuid1.getLeastSignificantBits());

    UUID uuid2 = UUID.fromString("1077e700-c7f2-11de-982e-6fad363d5f29");
    byte[] bytes2 = new byte[16];
    ByteBuffer bb2 = ByteBuffer.wrap(bytes2);
    bb2.putLong(uuid2.getMostSignificantBits());
    bb2.putLong(uuid2.getLeastSignificantBits());

    assert new TimeUUIDType().compare(bytes1, bytes2) != 0;
}

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From source file:io.warp10.quasar.encoder.QuasarTokenEncoder.java

private ByteBuffer toByteBuffer(String strUUID) {
    ByteBuffer buffer = ByteBuffer.allocate(16);
    buffer.order(ByteOrder.BIG_ENDIAN);

    UUID uuid = UUID.fromString(strUUID);

    buffer.putLong(uuid.getMostSignificantBits());
    buffer.putLong(uuid.getLeastSignificantBits());

    buffer.position(0);/*from www  .  j  ava 2s.  c  o m*/
    return buffer;
}

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From source file:org.midonet.benchmarks.mpi.MPIBenchApp.java

/**
 * Broadcast an UUID value from the 'source' process to the rest.
 * Note: an UUID with all bytes to zero is considered equivalent to null
 * (and therefore, converted to null)./*from  ww  w .  ja  va  2s  .co  m*/
 *
 * @param id     is the UUID to transmit, only needs to be set in the
 *               source process.
 * @param source is the rank of the source process.
 * @return for all processes, the transmitted UUID
 */
protected UUID broadcastUUID(UUID id, int source) throws MPIException {
    long[] msg = { 0, 0 };
    if (source == mpiRank) {
        if (id != null) {
            msg[0] = id.getMostSignificantBits();
            msg[1] = id.getLeastSignificantBits();
        }
    }
    MPI.COMM_WORLD.bcast(msg, 2, MPI.LONG, source);
    return (msg[0] == 0 && msg[1] == 0) ? null : new UUID(msg[0], msg[1]);
}

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From source file:org.hillview.dataset.RemoteDataSet.java

@Override
public Observable<PartialResult<ControlMessage.StatusList>> manage(ControlMessage message) {
    final ManageOperation manageOp = new ManageOperation(message);
    final byte[] serializedOp = SerializationUtils.serialize(manageOp);
    final UUID operationId = UUID.randomUUID();
    final Command command = Command.newBuilder().setIdsIndex(this.remoteHandle)
            .setSerializedOp(ByteString.copyFrom(serializedOp)).setHighId(operationId.getMostSignificantBits())
            .setLowId(operationId.getLeastSignificantBits()).build();
    final SerializedSubject<PartialResult<ControlMessage.StatusList>, PartialResult<ControlMessage.StatusList>> subj = createSerializedSubject();
    final StreamObserver<PartialResponse> responseObserver = new ManageObserver(subj, message, this);
    return subj.unsubscribeOn(ExecutorUtils.getUnsubscribeScheduler()).doOnSubscribe(
            () -> this.stub.withDeadlineAfter(TIMEOUT, TimeUnit.MILLISECONDS).manage(command, responseObserver))
            .doOnUnsubscribe(() -> this.unsubscribe(operationId));
}

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From source file:org.hillview.dataset.RemoteDataSet.java

/**
 * Map operations on a RemoteDataSet result in only one onNext
 * invocation that will return the final IDataSet.
 *///  w  w w .  j av a2s .  co  m
@Override
public <S> Observable<PartialResult<IDataSet<S>>> map(final IMap<T, S> mapper) {
    final MapOperation<T, S> mapOp = new MapOperation<T, S>(mapper);
    final byte[] serializedOp = SerializationUtils.serialize(mapOp);
    final UUID operationId = UUID.randomUUID();
    final Command command = Command.newBuilder().setIdsIndex(this.remoteHandle)
            .setSerializedOp(ByteString.copyFrom(serializedOp)).setHighId(operationId.getMostSignificantBits())
            .setLowId(operationId.getLeastSignificantBits()).build();
    final SerializedSubject<PartialResult<IDataSet<S>>, PartialResult<IDataSet<S>>> subj = createSerializedSubject();
    final StreamObserver<PartialResponse> responseObserver = new NewDataSetObserver<S>(subj);
    return subj.unsubscribeOn(ExecutorUtils.getUnsubscribeScheduler()).doOnSubscribe(
            () -> this.stub.withDeadlineAfter(TIMEOUT, TimeUnit.MILLISECONDS).map(command, responseObserver))
            .doOnUnsubscribe(() -> this.unsubscribe(operationId));
}

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From source file:org.hillview.dataset.RemoteDataSet.java

@Override
public <S> Observable<PartialResult<IDataSet<S>>> flatMap(IMap<T, List<S>> mapper) {
    final FlatMapOperation<T, S> mapOp = new FlatMapOperation<T, S>(mapper);
    final byte[] serializedOp = SerializationUtils.serialize(mapOp);
    final UUID operationId = UUID.randomUUID();
    final Command command = Command.newBuilder().setIdsIndex(this.remoteHandle)
            .setSerializedOp(ByteString.copyFrom(serializedOp)).setHighId(operationId.getMostSignificantBits())
            .setLowId(operationId.getLeastSignificantBits()).build();
    final SerializedSubject<PartialResult<IDataSet<S>>, PartialResult<IDataSet<S>>> subj = createSerializedSubject();
    final StreamObserver<PartialResponse> responseObserver = new NewDataSetObserver<S>(subj);
    return subj//from w  w w  . ja  va  2  s.  c  om
            .unsubscribeOn(ExecutorUtils.getUnsubscribeScheduler()).doOnSubscribe(() -> this.stub
                    .withDeadlineAfter(TIMEOUT, TimeUnit.MILLISECONDS).flatMap(command, responseObserver))
            .doOnUnsubscribe(() -> this.unsubscribe(operationId));
}

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From source file:org.hillview.dataset.RemoteDataSet.java

/**
 * Sketch operation that streams partial results from the server to the caller.
 */// w  ww.  jav a2  s . c om
@Override
public <R> Observable<PartialResult<R>> sketch(final ISketch<T, R> sketch) {
    final SketchOperation<T, R> sketchOp = new SketchOperation<T, R>(sketch);
    final byte[] serializedOp = SerializationUtils.serialize(sketchOp);
    final UUID operationId = UUID.randomUUID();
    final Command command = Command.newBuilder().setIdsIndex(this.remoteHandle)
            .setSerializedOp(ByteString.copyFrom(serializedOp)).setHighId(operationId.getMostSignificantBits())
            .setLowId(operationId.getLeastSignificantBits()).build();
    final SerializedSubject<PartialResult<R>, PartialResult<R>> subj = createSerializedSubject();
    final StreamObserver<PartialResponse> responseObserver = new SketchObserver<R>(subj);
    return subj
            .doOnSubscribe(() -> this.stub.withDeadlineAfter(TIMEOUT, TimeUnit.MILLISECONDS).sketch(command,
                    responseObserver))
            .unsubscribeOn(ExecutorUtils.getUnsubscribeScheduler())
            .doOnUnsubscribe(() -> this.unsubscribe(operationId));
}

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