Example usage for java.nio ByteBuffer putInt

Introduction

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

Prototype

public abstract ByteBuffer putInt(int value);

Source Link

Document

Writes the given int to the current position and increases the position by 4.

Usage

From source file:org.apache.bookkeeper.bookie.BookieJournalTest.java

private void writePreV2Journal(File journalDir, int numEntries) throws Exception {
    long logId = System.currentTimeMillis();
    File fn = new File(journalDir, Long.toHexString(logId) + ".txn");

    FileChannel fc = new RandomAccessFile(fn, "rw").getChannel();

    ByteBuffer zeros = ByteBuffer.allocate(512);
    fc.write(zeros, 4 * 1024 * 1024);/*from   w ww.  j a  v a2s  .  c  o  m*/
    fc.position(0);

    byte[] data = "JournalTestData".getBytes();
    long lastConfirmed = LedgerHandle.INVALID_ENTRY_ID;
    for (int i = 1; i <= numEntries; i++) {
        ByteBuffer packet = ClientUtil.generatePacket(1, i, lastConfirmed, i * data.length, data)
                .toByteBuffer();
        lastConfirmed = i;
        ByteBuffer lenBuff = ByteBuffer.allocate(4);
        lenBuff.putInt(packet.remaining());
        lenBuff.flip();

        fc.write(lenBuff);
        fc.write(packet);
    }
}

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From source file:org.apache.bookkeeper.bookie.BookieJournalTest.java

private JournalChannel writeV2Journal(File journalDir, int numEntries) throws Exception {
    long logId = System.currentTimeMillis();
    JournalChannel jc = new JournalChannel(journalDir, logId);

    moveToPosition(jc, JournalChannel.VERSION_HEADER_SIZE);

    BufferedChannel bc = jc.getBufferedChannel();

    byte[] data = new byte[1024];
    Arrays.fill(data, (byte) 'X');
    long lastConfirmed = LedgerHandle.INVALID_ENTRY_ID;
    for (int i = 1; i <= numEntries; i++) {
        ByteBuffer packet = ClientUtil.generatePacket(1, i, lastConfirmed, i * data.length, data)
                .toByteBuffer();/*w ww. j  a va2 s . c  o  m*/
        lastConfirmed = i;
        ByteBuffer lenBuff = ByteBuffer.allocate(4);
        lenBuff.putInt(packet.remaining());
        lenBuff.flip();

        bc.write(lenBuff);
        bc.write(packet);
    }
    bc.flush(true);

    updateJournalVersion(jc, JournalChannel.V2);

    return jc;
}

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From source file:io.pcp.parfait.dxm.PcpMmvWriter.java

/**
 * Writes out a PCP MMV table-of-contents block.
 * //from w w w  .  j  a  va  2s .  c  o m
 * @param dataFileBuffer
 *            ByteBuffer positioned at the correct offset in the file for the block
 * @param tocType
 *            the type of TOC block to write
 * @param entryCount
 *            the number of blocks of type tocType to be found in the file
 * @param firstEntryOffset
 *            the offset of the first tocType block, relative to start of the file
 */
private void writeToc(ByteBuffer dataFileBuffer, TocType tocType, int entryCount, int firstEntryOffset) {
    dataFileBuffer.putInt(tocType.identifier);
    dataFileBuffer.putInt(entryCount);
    dataFileBuffer.putLong(firstEntryOffset);
}

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From source file:org.apache.bookkeeper.bookie.BookieJournalTest.java

private JournalChannel writeV3Journal(File journalDir, int numEntries, byte[] masterKey) throws Exception {
    long logId = System.currentTimeMillis();
    JournalChannel jc = new JournalChannel(journalDir, logId);

    moveToPosition(jc, JournalChannel.VERSION_HEADER_SIZE);

    BufferedChannel bc = jc.getBufferedChannel();

    byte[] data = new byte[1024];
    Arrays.fill(data, (byte) 'X');
    long lastConfirmed = LedgerHandle.INVALID_ENTRY_ID;
    for (int i = 0; i <= numEntries; i++) {
        ByteBuffer packet;/*from  w w  w .  j a  va2  s. c o  m*/
        if (i == 0) {
            packet = generateMetaEntry(1, masterKey);
        } else {
            packet = ClientUtil.generatePacket(1, i, lastConfirmed, i * data.length, data).toByteBuffer();
        }
        lastConfirmed = i;
        ByteBuffer lenBuff = ByteBuffer.allocate(4);
        lenBuff.putInt(packet.remaining());
        lenBuff.flip();

        bc.write(lenBuff);
        bc.write(packet);
    }
    bc.flush(true);

    updateJournalVersion(jc, JournalChannel.V3);

    return jc;
}

---

From source file:org.apache.bookkeeper.bookie.BookieJournalTest.java

private JournalChannel writeV4Journal(File journalDir, int numEntries, byte[] masterKey) throws Exception {
    long logId = System.currentTimeMillis();
    JournalChannel jc = new JournalChannel(journalDir, logId);

    moveToPosition(jc, JournalChannel.VERSION_HEADER_SIZE);

    BufferedChannel bc = jc.getBufferedChannel();

    byte[] data = new byte[1024];
    Arrays.fill(data, (byte) 'X');
    long lastConfirmed = LedgerHandle.INVALID_ENTRY_ID;
    for (int i = 0; i <= numEntries; i++) {
        ByteBuffer packet;/*from w ww.  j  a v a 2  s.  c o m*/
        if (i == 0) {
            packet = generateMetaEntry(1, masterKey);
        } else {
            packet = ClientUtil.generatePacket(1, i, lastConfirmed, i * data.length, data).toByteBuffer();
        }
        lastConfirmed = i;
        ByteBuffer lenBuff = ByteBuffer.allocate(4);
        lenBuff.putInt(packet.remaining());
        lenBuff.flip();
        bc.write(lenBuff);
        bc.write(packet);
    }
    // write fence key
    ByteBuffer packet = generateFenceEntry(1);
    ByteBuffer lenBuf = ByteBuffer.allocate(4);
    lenBuf.putInt(packet.remaining());
    lenBuf.flip();
    bc.write(lenBuf);
    bc.write(packet);
    bc.flush(true);
    updateJournalVersion(jc, JournalChannel.V4);
    return jc;
}

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From source file:io.github.dsheirer.source.tuner.hackrf.HackRFTunerController.java

public void setSampleRateManual(int frequency, int divider) throws UsbException {
    ByteBuffer buffer = ByteBuffer.allocateDirect(8);

    buffer.order(ByteOrder.LITTLE_ENDIAN);

    buffer.putInt(frequency);
    buffer.putInt(divider);/*from   w  ww. j av  a2 s  . c o m*/

    write(Request.SET_SAMPLE_RATE, 0, 0, buffer);
}

---

From source file:org.apache.bookkeeper.bookie.BookieJournalTest.java

private JournalChannel writeV5Journal(File journalDir, int numEntries, byte[] masterKey) throws Exception {
    long logId = System.currentTimeMillis();
    JournalChannel jc = new JournalChannel(journalDir, logId);

    BufferedChannel bc = jc.getBufferedChannel();

    ByteBuffer paddingBuff = ByteBuffer.allocateDirect(2 * JournalChannel.SECTOR_SIZE);
    ZeroBuffer.put(paddingBuff);//from w w  w . j  a  v  a2s  .c om
    byte[] data = new byte[4 * 1024 * 1024];
    Arrays.fill(data, (byte) 'X');
    long lastConfirmed = LedgerHandle.INVALID_ENTRY_ID;
    long length = 0;
    for (int i = 0; i <= numEntries; i++) {
        ByteBuffer packet;
        if (i == 0) {
            packet = generateMetaEntry(1, masterKey);
        } else {
            packet = ClientUtil.generatePacket(1, i, lastConfirmed, length, data, 0, i).toByteBuffer();
        }
        lastConfirmed = i;
        length += i;
        ByteBuffer lenBuff = ByteBuffer.allocate(4);
        lenBuff.putInt(packet.remaining());
        lenBuff.flip();
        bc.write(lenBuff);
        bc.write(packet);
        Journal.writePaddingBytes(jc, paddingBuff, JournalChannel.SECTOR_SIZE);
    }
    // write fence key
    ByteBuffer packet = generateFenceEntry(1);
    ByteBuffer lenBuf = ByteBuffer.allocate(4);
    lenBuf.putInt(packet.remaining());
    lenBuf.flip();
    bc.write(lenBuf);
    bc.write(packet);
    Journal.writePaddingBytes(jc, paddingBuff, JournalChannel.SECTOR_SIZE);
    bc.flush(true);
    updateJournalVersion(jc, JournalChannel.V5);
    return jc;
}

---

From source file:tor.TorCircuit.java

/**
 * Creates a stream using this circuit and connects to a host
 *
 * @param host Hostname/ip/*from  w  ww. java  2s.co  m*/
 * @param port Port
 * @param list A listener for stream events
 * @return TorStream object
 */
public TorStream createStream(String host, int port, TorStream.TorStreamListener list) throws IOException {
    if (state == STATES.DESTROYED) {
        log.error("Trying to use destroyed circuit");
        throw new RuntimeException("Trying to use destroyed circuit");
    }

    byte b[] = new byte[100];
    ByteBuffer buf = ByteBuffer.wrap(b);
    buf.put((host + ":" + port).getBytes("UTF-8"));
    buf.put((byte) 0); // null terminator
    buf.putInt(0);
    //TODO: allocate stream and circuit IDS properly
    int stid = streamId_counter++;
    send(b, RELAY_BEGIN, false, (short) stid);
    TorStream st = new TorStream(stid, this, list);
    streams.put(stid, st);
    return st;
}

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From source file:org.cryptomator.frontend.webdav.WebDavServerTest.java

@Test
public void testMultipleGetWithRangeAsync() throws IOException, URISyntaxException, InterruptedException {
    final String testResourceUrl = servletRoot + "/foo.txt";

    // prepare 8MiB test data:
    final byte[] plaintextData = new byte[2097152 * Integer.BYTES];
    final ByteBuffer plaintextDataByteBuffer = ByteBuffer.wrap(plaintextData);
    for (int i = 0; i < 2097152; i++) {
        plaintextDataByteBuffer.putInt(i);
    }//from w  w  w  .  j  ava  2s.  c o m
    try (WritableFile w = fs.file("foo.txt").openWritable()) {
        plaintextDataByteBuffer.flip();
        w.write(plaintextDataByteBuffer);
    }

    final MultiThreadedHttpConnectionManager cm = new MultiThreadedHttpConnectionManager();
    cm.getParams().setDefaultMaxConnectionsPerHost(50);
    final HttpClient client = new HttpClient(cm);

    // multiple async range requests:
    final List<ForkJoinTask<?>> tasks = new ArrayList<>();
    final Random generator = new Random(System.currentTimeMillis());

    final AtomicBoolean success = new AtomicBoolean(true);

    // 10 full interrupted requests:
    for (int i = 0; i < 10; i++) {
        final ForkJoinTask<?> task = ForkJoinTask.adapt(() -> {
            try {
                final HttpMethod getMethod = new GetMethod(testResourceUrl);
                final int statusCode = client.executeMethod(getMethod);
                if (statusCode != 200) {
                    LOG.error("Invalid status code for interrupted full request");
                    success.set(false);
                }
                getMethod.getResponseBodyAsStream().read();
                getMethod.getResponseBodyAsStream().close();
                getMethod.releaseConnection();
            } catch (IOException e) {
                throw new RuntimeException(e);
            }
        });
        tasks.add(task);
    }

    // 50 crappy interrupted range requests:
    for (int i = 0; i < 50; i++) {
        final int lower = generator.nextInt(plaintextData.length);
        final ForkJoinTask<?> task = ForkJoinTask.adapt(() -> {
            try {
                final HttpMethod getMethod = new GetMethod(testResourceUrl);
                getMethod.addRequestHeader("Range", "bytes=" + lower + "-");
                final int statusCode = client.executeMethod(getMethod);
                if (statusCode != 206) {
                    LOG.error("Invalid status code for interrupted range request");
                    success.set(false);
                }
                getMethod.getResponseBodyAsStream().read();
                getMethod.getResponseBodyAsStream().close();
                getMethod.releaseConnection();
            } catch (IOException e) {
                throw new RuntimeException(e);
            }
        });
        tasks.add(task);
    }

    // 50 normal open range requests:
    for (int i = 0; i < 50; i++) {
        final int lower = generator.nextInt(plaintextData.length - 512);
        final int upper = plaintextData.length - 1;
        final ForkJoinTask<?> task = ForkJoinTask.adapt(() -> {
            try {
                final HttpMethod getMethod = new GetMethod(testResourceUrl);
                getMethod.addRequestHeader("Range", "bytes=" + lower + "-");
                final byte[] expected = Arrays.copyOfRange(plaintextData, lower, upper + 1);
                final int statusCode = client.executeMethod(getMethod);
                final byte[] responseBody = new byte[upper - lower + 10];
                final int bytesRead = IOUtils.read(getMethod.getResponseBodyAsStream(), responseBody);
                getMethod.releaseConnection();
                if (statusCode != 206) {
                    LOG.error("Invalid status code for open range request");
                    success.set(false);
                } else if (upper - lower + 1 != bytesRead) {
                    LOG.error("Invalid response length for open range request");
                    success.set(false);
                } else if (!Arrays.equals(expected, Arrays.copyOfRange(responseBody, 0, bytesRead))) {
                    LOG.error("Invalid response body for open range request");
                    success.set(false);
                }
            } catch (IOException e) {
                throw new RuntimeException(e);
            }
        });
        tasks.add(task);
    }

    // 200 normal closed range requests:
    for (int i = 0; i < 200; i++) {
        final int pos1 = generator.nextInt(plaintextData.length - 512);
        final int pos2 = pos1 + 512;
        final ForkJoinTask<?> task = ForkJoinTask.adapt(() -> {
            try {
                final int lower = Math.min(pos1, pos2);
                final int upper = Math.max(pos1, pos2);
                final HttpMethod getMethod = new GetMethod(testResourceUrl);
                getMethod.addRequestHeader("Range", "bytes=" + lower + "-" + upper);
                final byte[] expected = Arrays.copyOfRange(plaintextData, lower, upper + 1);
                final int statusCode = client.executeMethod(getMethod);
                final byte[] responseBody = new byte[upper - lower + 1];
                final int bytesRead = IOUtils.read(getMethod.getResponseBodyAsStream(), responseBody);
                getMethod.releaseConnection();
                if (statusCode != 206) {
                    LOG.error("Invalid status code for closed range request");
                    success.set(false);
                } else if (upper - lower + 1 != bytesRead) {
                    LOG.error("Invalid response length for closed range request");
                    success.set(false);
                } else if (!Arrays.equals(expected, Arrays.copyOfRange(responseBody, 0, bytesRead))) {
                    LOG.error("Invalid response body for closed range request");
                    success.set(false);
                }
            } catch (IOException e) {
                throw new RuntimeException(e);
            }
        });
        tasks.add(task);
    }

    Collections.shuffle(tasks, generator);

    final ForkJoinPool pool = new ForkJoinPool(4);
    for (ForkJoinTask<?> task : tasks) {
        pool.execute(task);
    }
    for (ForkJoinTask<?> task : tasks) {
        task.join();
    }
    pool.shutdown();
    cm.shutdown();

    Assert.assertTrue(success.get());
}

---

From source file:tor.TorCircuit.java

/**
 * Builds a relay cell payload (not including cell header, only relay header)
 *
 * @param toHop   Hop that it's destined for
 * @param cmd     Command ID, see RELAY_
 * @param stream  Stream ID//from   www. j av a 2  s . c  om
 * @param payload Relay cell data
 * @return Constructed relay payload
 */
protected synchronized byte[] buildRelay(TorHop toHop, int cmd, short stream, byte[] payload) {
    byte[] fnl = new byte[509];
    ByteBuffer buf = ByteBuffer.wrap(fnl);
    buf.put((byte) cmd);
    buf.putShort((short) 0); // recognised
    buf.putShort(stream);
    buf.putInt(0); // digest

    if (payload != null) {
        buf.putShort((short) payload.length);
        buf.put(payload);
    } else {
        buf.putShort((short) 0);
    }

    toHop.df_md.update(fnl);
    MessageDigest md;
    try {
        md = (MessageDigest) toHop.df_md.clone();

        byte digest[] = md.digest();

        //byte [] fnl_final = new byte[509];
        System.arraycopy(digest, 0, fnl, 5, 4);

        return fnl;
    } catch (CloneNotSupportedException e) {
        throw new RuntimeException(e);
    }

}

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