Example usage for java.nio ByteBuffer getLong

List of usage examples for java.nio ByteBuffer getLong

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Introduction

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

Prototype

public abstract long getLong(int index);

Source Link

Document

Returns the long at the specified index.

Usage

From source file:com.palantir.atlasdb.keyvalue.cassandra.CassandraKeyValueServices.java

static String convertCassandraByteBufferUUIDtoString(ByteBuffer uuid) {
    return new UUID(uuid.getLong(uuid.position()), uuid.getLong(uuid.position() + 8)).toString();
}

From source file:burstcoin.observer.service.ATService.java

public static String getATLong(String hex) {
    ByteBuffer bf = ByteBuffer.allocate(8);
    bf.order(ByteOrder.LITTLE_ENDIAN);
    bf.put(parseHexString(hex));/*  ww  w.java2s .  co  m*/
    return toUnsignedLong(bf.getLong(0));
}

From source file:mtmo.test.mediadrm.Utils.java

public static String accountIdToMarlinFormat(final String accountId) {
    ByteBuffer accountIdBuf = ByteBuffer.allocate(BYTES_OF_ACCOUNT_ID);
    try {// ww  w  .  j av a2 s.co m
        accountIdBuf.putLong(Long.valueOf(accountId));
    } catch (Exception e) {
        return null;
    }
    accountIdBuf.order(ByteOrder.LITTLE_ENDIAN);
    return String.format(Locale.US, "%016x", accountIdBuf.getLong(0));
}

From source file:com.alibaba.rocketmq.common.MixAll.java

public static long createBrokerId(final String ip, final int port) {
    InetSocketAddress isa = new InetSocketAddress(ip, port);
    byte[] ipArray = isa.getAddress().getAddress();
    ByteBuffer bb = ByteBuffer.allocate(8);
    bb.put(ipArray);//w ww.  j  a v a 2 s  .c  o  m
    bb.putInt(port);
    long value = bb.getLong(0);
    return Math.abs(value);
}

From source file:com.glaf.core.util.ByteBufferUtils.java

public static long toLong(ByteBuffer bytes) {
    return bytes.getLong(bytes.position());
}

From source file:net.onrc.openvirtex.packet.OVXLLDP.java

/**
 * Extracts dpid and port from OVX-generated LLDP packet.
 *
 * @param packet/*w  w  w .j  ava  2  s . c o  m*/
 * @return Dpid and port
 */
public static DPIDandPort parseLLDP(final byte[] packet) {
    final ByteBuffer bb = ByteBuffer.wrap(packet);

    // Extra offset due to VLAN tag
    int offset = 0;
    if (bb.getShort(ETHERTYPE_OFFSET) != Ethernet.TYPE_LLDP
            && bb.getShort(ETHERTYPE_OFFSET) != Ethernet.TYPE_BSN) {
        offset = 4;
    }

    final short port = bb.getShort(PORT_OFFSET + offset);
    final long dpid = bb.getLong(DPID_OFFSET + offset);

    return new DPIDandPort(dpid, port);
}

From source file:org.onlab.packet.ONLabLddp.java

/**
 * Extracts dpid and port from OVX-generated LLDP packet.
 *
 * @param packet packet data/*from  ww w. j  a v  a  2 s  . c om*/
 * @return Dpid and port
 */
public static DPIDandPort parseLLDP(final byte[] packet) {
    final ByteBuffer bb = ByteBuffer.wrap(packet);

    // Extra offset due to VLAN tag
    int offset = 0;
    if (bb.getShort(ETHERTYPE_OFFSET) != Ethernet.TYPE_LLDP
            && bb.getShort(ETHERTYPE_OFFSET) != Ethernet.TYPE_BSN) {
        offset = 4;
    }

    final int port = bb.getInt(PORT_OFFSET + offset);
    final long dpid = bb.getLong(DPID_OFFSET + offset);

    return new DPIDandPort(dpid, port);
}

From source file:FindInt.java

public int seek() throws IOException {
    int num = -1;

    try (SeekableByteChannel fc = Files.newByteChannel(file)) {

        ByteBuffer buf = ByteBuffer.allocate(8);

        //Get the offset into the file.
        fc.read(buf);//w  w w . j a  v  a  2s.co m
        long offset = buf.getLong(0);

        //Seek to the offset location.
        fc.position(offset);
        buf.rewind();

        //Read the 'secret' value.
        fc.read(buf);
        num = buf.getInt(0);
    } catch (IOException x) {
        System.err.println(x);
    }
    return num;
}

From source file:com.mbientlab.metawear.app.popup.DataPlotFragment.java

@Override
public void onViewCreated(View view, Bundle savedInstanceState) {
    final Collection<DataPoint> convertedX = new ArrayList<>(), convertedY = new ArrayList<>(),
            convertedZ = new ArrayList<>();

    GraphView graph = (GraphView) view.findViewById(R.id.data_plot);
    graph.getViewport().setScrollable(true);
    graph.getViewport().setScalable(true);

    graph.getViewport().setYAxisBoundsManual(true);
    graph.getViewport().setMaxY(8.0);/* w w w .j  a va 2s . c o  m*/
    graph.getViewport().setMinY(-8.0);
    graph.getLegendRenderer().setVisible(true);
    graph.getLegendRenderer().setAlign(LegendRenderer.LegendAlign.MIDDLE);

    for (byte[] dataBytes : accelConfig.polledBytes()) {
        ByteBuffer buffer = ByteBuffer.wrap(dataBytes);
        double tickInS = (double) (buffer.getLong(6) / 1000.0);
        float xAccel, yAccel, zAccel;

        if (accelConfig.firmwarePos() == 0) {
            xAccel = buffer.getShort(0) / 1000.0f;
            yAccel = buffer.getShort(2) / 1000.0f;
            zAccel = buffer.getShort(4) / 1000.0f;
        } else {
            xAccel = BytesInterpreter.bytesToGs(accelConfig.getSamplingConfig(), buffer.getShort(0));
            yAccel = BytesInterpreter.bytesToGs(accelConfig.getSamplingConfig(), buffer.getShort(2));
            zAccel = BytesInterpreter.bytesToGs(accelConfig.getSamplingConfig(), buffer.getShort(4));
        }
        convertedX.add(new DataPoint(tickInS, xAccel));
        convertedY.add(new DataPoint(tickInS, yAccel));
        convertedZ.add(new DataPoint(tickInS, zAccel));

    }

    addDataSeries("X-Axis", convertedX);
    addDataSeries("Y-Axis", convertedY);
    addDataSeries("Z-Axis", convertedZ);

    int colorIndex = 0;
    for (Entry<String, LineGraphSeries<DataPoint>> data : dataSeries.entrySet()) {
        data.getValue().setColor(chartColors[colorIndex]);
        data.getValue().setTitle(data.getKey());
        graph.addSeries(data.getValue());
        colorIndex++;
    }
}

From source file:com.linkedin.pinot.core.indexsegment.utils.MmapMemoryManagerTest.java

@Test
public void testLargeBlocks() throws Exception {
    final String segmentName = "someSegment";
    PinotDataBufferMemoryManager memoryManager = new MmapMemoryManager(_tmpDir, segmentName);
    final long s1 = 2 * MmapMemoryManager.getDefaultFileLength();
    final long s2 = 1000;
    final String col1 = "col1";
    final String col2 = "col2";
    final byte value = 34;
    PinotDataBuffer buf1 = memoryManager.allocate(s1, col1);

    // Verify that we can write to and read from the buffer
    ByteBuffer b1 = buf1.toDirectByteBuffer(0, (int) s1);
    b1.putLong(0, s1);/*from w  w  w. ja  v  a  2  s .  co m*/
    Assert.assertEquals(b1.getLong(0), s1);
    b1.put((int) s1 - 1, value);
    Assert.assertEquals(b1.get((int) s1 - 1), value);

    PinotDataBuffer buf2 = memoryManager.allocate(s2, col2);
    ByteBuffer b2 = buf2.toDirectByteBuffer(0, (int) s2);
    b2.putLong(0, s2);
    Assert.assertEquals(b2.getLong(0), s2);

    File dir = new File(_tmpDir);
    File[] files = dir.listFiles();
    Assert.assertEquals(files.length, 2);

    Arrays.sort(files, new Comparator<File>() {
        @Override
        public int compare(File o1, File o2) {
            return o1.getName().compareTo(o2.getName());
        }
    });

    String fileName = files[0].getName();
    Assert.assertTrue(fileName.contains(segmentName));

    fileName = files[1].getName();
    Assert.assertTrue(fileName.contains(segmentName));

    buf1.close();
    buf2.close();

    memoryManager.close();

    List<Pair<MmapUtils.AllocationContext, Integer>> allocationContexts = MmapUtils.getAllocationsAndSizes();
    Assert.assertEquals(allocationContexts.size(), 0);
    Assert.assertEquals(new File(_tmpDir).listFiles().length, 0);
}