Example usage for java.nio ByteBuffer allocate

List of usage examples for java.nio ByteBuffer allocate

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Introduction

In this page you can find the example usage for java.nio ByteBuffer allocate.

Prototype

public static ByteBuffer allocate(int capacity)

Source Link

Document

Creates a byte buffer based on a newly allocated byte array.

Usage

From source file:ch.cyberduck.core.cryptomator.features.CryptoReadFeature.java

@Override
public InputStream read(final Path file, final TransferStatus status, final ConnectionCallback callback)
        throws BackgroundException {
    try {/*from w w w  . j ava 2s . c  om*/
        final Path encrypted = vault.encrypt(session, file);
        // Header
        final Cryptor cryptor = vault.getCryptor();
        final TransferStatus headerStatus = new TransferStatus(status);
        headerStatus.setOffset(0);
        final InputStream in = proxy.read(encrypted,
                headerStatus.length(status.isAppend() ? cryptor.fileHeaderCryptor().headerSize()
                        : vault.toCiphertextSize(status.getLength())),
                callback);
        final ByteBuffer headerBuffer = ByteBuffer.allocate(cryptor.fileHeaderCryptor().headerSize());
        final int read = IOUtils.read(in, headerBuffer.array());
        final FileHeader header = cryptor.fileHeaderCryptor().decryptHeader(headerBuffer);
        if (status.isAppend()) {
            IOUtils.closeQuietly(in);
            final TransferStatus s = new TransferStatus(status).length(-1L);
            s.setOffset(this.align(status.getOffset()));
            final CryptoInputStream crypto = new CryptoInputStream(proxy.read(encrypted, s, callback), cryptor,
                    header, this.chunk(status.getOffset()));
            crypto.skip(this.position(status.getOffset()));
            return crypto;
        } else {
            return new CryptoInputStream(in, cryptor, header, vault.numberOfChunks(status.getOffset()));
        }
    } catch (IOException e) {
        throw new DefaultIOExceptionMappingService().map(e);
    }
}

From source file:com.liveramp.commons.util.BytesUtils.java

public static ByteBuffer byteBufferDeepCopy(ByteBuffer src) {
    ByteBuffer copy = ByteBuffer.allocate(src.remaining()).put(src.slice());
    copy.flip();//  w  w w  . j a v  a2  s .c o  m
    return copy;
}

From source file:byps.test.TestSerializePrimitiveTypes.java

public void internalTestBufferRealloc(ByteOrder border) throws BException {
    ByteBuffer buf = ByteBuffer.allocate(17);
    buf.order(border);//from ww  w.j av  a 2  s .  com
    BBuffer bbuf = BBuffer.create(TestUtils.protocol, buf);
    int count = 3;

    for (int i = 0; i < count; i++) {
        bbuf.putDouble(i);
    }
    bbuf.flip();

    TestUtils.printBuffer(log, bbuf);

    if (TestUtils.protocol == BProtocolJson.BINARY_MODEL) {
        BBufferJson jbuf = (BBufferJson) bbuf;
        for (int i = 0; i < count; i++) {
            if (i != 0)
                jbuf.nextExpectedJsonChar(',', true);
            double d = bbuf.getDouble();
            TestUtils.assertEquals(log, "double[" + i + "]", (double) i, d);
        }
    } else {
        for (int i = 0; i < count; i++) {
            double d = bbuf.getDouble();
            TestUtils.assertEquals(log, "double[" + i + "]", (double) i, d);
        }
    }
}

From source file:gridool.communication.transport.nio.GridNioServer.java

public GridNioServer(@Nonnull GridConfiguration config) {
    this.config = config;
    this.sharedReadBuf = ByteBuffer.allocate(8192);
    int nthreads = config.getMessageProcessorPoolSize();
    this.execPool = ExecutorFactory.newFixedThreadPool(nthreads, "NioMessageProcessor");
}

From source file:org.alfresco.contentstore.patch.PatchServiceImpl.java

@Override
public void getPatch(PatchDocument patchDocument, NodeChecksums nodeChecksums, ReadableByteChannel inChannel)
        throws IOException {
    ByteBuffer buffer = ByteBuffer.allocate(1024 * 100);
    inChannel.read(buffer);/*from w  w w.j  a  v a 2  s  . c o  m*/
    buffer.flip();

    updatePatchDocument(patchDocument, nodeChecksums, buffer);
}

From source file:com.hazelcast.simulator.probes.probes.impl.HdrLatencyDistributionResult.java

@Override
public void writeTo(XMLStreamWriter writer) {
    Histogram tmp = histogram.copy();//ww w. ja  v  a  2s .co  m
    int size = tmp.getNeededByteBufferCapacity();
    ByteBuffer byteBuffer = ByteBuffer.allocate(size);
    int bytesWritten = tmp.encodeIntoCompressedByteBuffer(byteBuffer);
    byteBuffer.rewind();
    byteBuffer.limit(bytesWritten);
    String encodedData = Base64.encodeBase64String(byteBuffer.array());
    try {
        writer.writeStartElement(ProbesResultXmlElements.HDR_LATENCY_DATA.getName());
        writer.writeCData(encodedData);
        writer.writeEndElement();
    } catch (XMLStreamException e) {
        throw new RuntimeException(e);
    }
}

From source file:com.codeabovelab.dm.common.security.token.SignedTokenServiceBackend.java

private byte[] contentPack(long creationTime, byte[] random, byte[] serverSecret, byte[] payload) {
    ByteBuffer buffer = ByteBuffer
            .allocate(8 + 1 + random.length + 1 + serverSecret.length + 1 + payload.length);
    buffer.putLong(creationTime);/* w ww. j a va2  s.co m*/
    store(buffer, random);
    store(buffer, serverSecret);
    store(buffer, payload);
    return buffer.array();
}

From source file:ch.cyberduck.core.sds.triplecrypt.CryptoInputStream.java

private int readNextChunk() throws IOException {
    final ByteBuffer ciphertextBuf = ByteBuffer.allocate(SDSSession.DEFAULT_CHUNKSIZE);
    final int read = IOUtils.read(proxy, ciphertextBuf.array());
    if (lastread == 0) {
        return IOUtils.EOF;
    }/*from w  w  w.  ja v  a 2  s  .  co m*/
    ciphertextBuf.position(read);
    ciphertextBuf.flip();
    try {
        final PlainDataContainer pDataContainer;
        if (read == 0) {
            final PlainDataContainer c1 = cipher
                    .processBytes(createEncryptedDataContainer(ciphertextBuf.array(), read, null));
            final PlainDataContainer c2 = cipher.doFinal(new EncryptedDataContainer(null, tag));
            pDataContainer = new PlainDataContainer(ArrayUtils.addAll(c1.getContent(), c2.getContent()));
        } else {
            pDataContainer = cipher
                    .processBytes(createEncryptedDataContainer(ciphertextBuf.array(), read, null));
        }
        final byte[] content = pDataContainer.getContent();
        buffer = ByteBuffer.allocate(content.length);
        buffer.put(content);
        buffer.flip();
        lastread = read;
        return content.length;
    } catch (CryptoException e) {
        throw new IOException(e);
    }
}

From source file:com.byteatebit.nbserver.task.TestWriteMessageTask.java

@Test
public void testWriteCompleteMessage() throws IOException {
    SocketChannel socket = mock(SocketChannel.class);
    ByteArrayOutputStream messageStream = new ByteArrayOutputStream();
    String message = "hi\n";
    when(socket.write(any(ByteBuffer.class))).then(new Answer<Integer>() {
        @Override//  w  w  w  .j a  v a 2s .  c om
        public Integer answer(InvocationOnMock invocationOnMock) throws Throwable {
            ByteBuffer buffer = (ByteBuffer) invocationOnMock.getArguments()[0];
            while (buffer.hasRemaining())
                messageStream.write(buffer.get());
            return buffer.position();
        }
    });
    INbContext nbContext = mock(INbContext.class);
    SelectionKey selectionKey = mock(SelectionKey.class);
    when(selectionKey.channel()).thenReturn(socket);
    when(selectionKey.isValid()).thenReturn(true);
    when(selectionKey.readyOps()).thenReturn(SelectionKey.OP_WRITE);

    WriteMessageTask writeTask = WriteMessageTask.Builder.builder().withByteBuffer(ByteBuffer.allocate(100))
            .build();
    List<String> callbackInvoked = new ArrayList<>();
    Runnable callback = () -> callbackInvoked.add("");
    Consumer<Exception> exceptionHandler = e -> Assert.fail(e.getMessage());
    writeTask.writeMessage(message.getBytes(StandardCharsets.UTF_8), nbContext, socket, callback,
            exceptionHandler);
    verify(nbContext, times(1)).register(any(SocketChannel.class), eq(SelectionKey.OP_WRITE), any(), any());
    writeTask.write(selectionKey, callback, exceptionHandler);
    verify(selectionKey, times(1)).interestOps(0);

    Assert.assertEquals(message, messageStream.toString(StandardCharsets.UTF_8));
    Assert.assertEquals(1, callbackInvoked.size());
}

From source file:jsave.Utils.java

public static long read_uint32(final RandomAccessFile raf) throws IOException {
    byte[] data = new byte[4];
    raf.read(data);// w w w  . ja  va2 s  .c  o  m
    ByteBuffer bb = ByteBuffer.allocate(data.length);
    bb.put(data);
    return getUnsignedInt(bb);
}