Example usage for java.nio ByteBuffer get

Introduction

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

Prototype

public abstract byte get(int index);

Source Link

Document

Returns the byte at the specified index and does not change the position.

Usage

From source file:com.l2jfree.gameserver.geodata.pathfinding.geonodes.GeoPathFinding.java

private Node readNode(short node_x, short node_y, byte layer) {
    short regoffset = getRegionOffset(getRegionX(node_x), getRegionY(node_y));
    if (!pathNodesExist(regoffset))
        return null;
    short nbx = getNodeBlock(node_x);
    short nby = getNodeBlock(node_y);
    int idx = _pathNodesIndex.get(regoffset).get((nby << 8) + nbx);
    ByteBuffer pn = _pathNodes.get(regoffset);
    //reading//  w  ww  .jav  a  2  s .  com
    byte nodes = pn.get(idx);
    idx += layer * 10 + 1;//byte + layer*10byte
    if (nodes < layer) {
        _log.warn("SmthWrong!");
    }
    short node_z = pn.getShort(idx);
    idx += 2;
    return new GeoNode(node_x, node_y, node_z, idx);
}

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From source file:com.l2jfree.gameserver.geodata.pathfinding.geonodes.GeoPathFinding.java

private Node readNode(int gx, int gy, short z) {
    short node_x = getNodePos(gx);
    short node_y = getNodePos(gy);
    short regoffset = getRegionOffset(getRegionX(node_x), getRegionY(node_y));
    if (!pathNodesExist(regoffset))
        return null;
    short nbx = getNodeBlock(node_x);
    short nby = getNodeBlock(node_y);
    int idx = _pathNodesIndex.get(regoffset).get((nby << 8) + nbx);
    ByteBuffer pn = _pathNodes.get(regoffset);
    //reading/*  www.j av a2 s  .c  o  m*/
    byte nodes = pn.get(idx++);
    int idx2 = 0; //create index to nearlest node by z
    short last_z = Short.MIN_VALUE;
    while (nodes > 0) {
        short node_z = pn.getShort(idx);
        if (Math.abs(last_z - z) > Math.abs(node_z - z)) {
            last_z = node_z;
            idx2 = idx + 2;
        }
        idx += 10; //short + 8 byte
        nodes--;
    }
    return new GeoNode(node_x, node_y, last_z, idx2);
}

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From source file:gridool.memcached.gateway.BinaryCommandProxy.java

private static void xferResponse(final byte opcode, final SocketChannel src, final Channel dst,
        final String key) throws IOException {
    ByteBuffer headerBuf = ByteBuffer.allocate(BinaryProtocol.HEADER_LENGTH);
    int headerRead = NIOUtils.readFully(src, headerBuf, BinaryProtocol.HEADER_LENGTH);
    assert (headerRead == BinaryProtocol.HEADER_LENGTH) : headerRead;
    headerBuf.flip();//from  w w w . java  2 s. c  o  m

    if (BinaryProtocol.surpressSuccessResponse(opcode)) {
        // piggyback will never happens 
        final short status = headerBuf.getShort(6);
        if (status == 0) {
            return;
        }
    }

    ChannelBuffer res;
    int totalBody = headerBuf.getInt(8);
    if (totalBody > 0) {
        ByteBuffer bodyBuf = ByteBuffer.allocate(totalBody);
        int bodyRead = NIOUtils.readFully(src, bodyBuf, totalBody);
        assert (bodyRead == totalBody) : "bodyRead (" + bodyRead + ") != totalBody (" + totalBody + ")";
        bodyBuf.flip();
        res = ChannelBuffers.wrappedBuffer(headerBuf, bodyBuf);
    } else {
        res = ChannelBuffers.wrappedBuffer(headerBuf);
    }
    String opname = BinaryProtocol.resolveName(headerBuf.get(1));
    if (LOG.isDebugEnabled()) {
        Header header = new Header();
        header.decode(headerBuf);
        LOG.debug(
                "Start sending memcached response [" + opname + "] " + res.readableBytes() + " bytes for key '"
                        + key + "'\n" + header + '\n' + Arrays.toString(res.toByteBuffer().array()));
    }
    dst.write(res).addListener(new VerboseListener("sendResponse [" + opname + "] for key: " + key));
}

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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. j  a va 2  s  .  c  om
    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);
}

---

From source file:com.taobao.common.tfs.comm.TfsClient.java

public Object invoke(final BasePacket packet, final long timeout) throws TfsException {
    if (isDebugEnabled) {
        log.debug("send request [" + packet.getChid() + "],time is:" + System.currentTimeMillis());
    }//w  ww.j  a  v a2 s  .c o  m
    ArrayBlockingQueue<Object> queue = new ArrayBlockingQueue<Object>(1);
    responses.put(packet.getChid(), queue);
    ByteBuffer bb = packet.getByteBuffer();
    bb.flip();
    byte[] data = new byte[bb.remaining()];
    bb.get(data);
    WriteFuture writeFuture = session.write(data);
    writeFuture.addListener(new IoFutureListener() {

        public void operationComplete(IoFuture future) {

            WriteFuture wfuture = (WriteFuture) future;
            if (wfuture.isWritten()) {
                return;
            }
            String error = "send message to tfs server error [" + packet.getChid() + "], tfs server: "
                    + session.getRemoteAddress() + ", maybe because this connection closed: "
                    + !session.isConnected();

            try {
                putResponse(packet.getChid(), new TfsException(error));
            } catch (TfsException e) {
                // should never happen
                log.error("put response fail", e);
            }

            // close this session
            if (session.isConnected()) {
                session.close();
            } else {
                TfsClientFactory.getInstance().removeClient(key);
            }
        }

    });

    Object response = null;
    try {
        response = queue.poll(timeout, TimeUnit.MILLISECONDS);
        if (response == null) { // timeout
            return null;
        } else if (response instanceof TfsException) {
            throw (TfsException) response;
        }
    } catch (InterruptedException e) {
        throw new TfsException("tfs client invoke error", e);
    } finally {
        responses.remove(packet.getChid());
        // For GC
        queue = null;
    }
    if (isDebugEnabled) {
        log.debug("return response [" + packet.getChid() + "],time is:" + System.currentTimeMillis());
    }

    // do decode here
    if (response instanceof BasePacket) {
        ((BasePacket) response).decode();
    }
    return response;
}

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From source file:com.taobao.tair.comm.TairClient.java

public Object invoke(final BasePacket packet, final long timeout) throws TairClientException {
    if (isDebugEnabled) {
        LOGGER.debug("send request [" + packet.getChid() + "],time is:" + System.currentTimeMillis());
    }//from w  ww .  j  a  va  2s  . com
    ArrayBlockingQueue<Object> queue = new ArrayBlockingQueue<Object>(1);
    responses.put(packet.getChid(), queue);
    ByteBuffer bb = packet.getByteBuffer();
    bb.flip();
    byte[] data = new byte[bb.remaining()];
    bb.get(data);
    WriteFuture writeFuture = session.write(data);
    writeFuture.addListener(new IoFutureListener() {

        public void operationComplete(IoFuture future) {
            WriteFuture wfuture = (WriteFuture) future;
            if (wfuture.isWritten()) {
                return;
            }
            String error = "send message to tair server error [" + packet.getChid() + "], tair server: "
                    + session.getRemoteAddress() + ", maybe because this connection closed :"
                    + !session.isConnected();
            LOGGER.warn(error);
            TairResponse response = new TairResponse();
            response.setRequestId(packet.getChid());
            response.setResponse(new TairClientException(error));
            try {
                putResponse(packet.getChid(), response.getResponse());
            } catch (TairClientException e) {
                // IGNORE,should not happen
            }
            // close this session
            if (session.isConnected())
                session.close();
            else
                clientFactory.removeClient(key);
        }

    });
    Object response = null;
    try {
        response = queue.poll(timeout, TimeUnit.MILLISECONDS);
        if (response == null) {
            throw new TairClientException("tair client invoke timeout,timeout is: " + timeout
                    + ",requestId is: " + packet.getChid() + "request type:" + packet.getClass().getName());
        } else if (response instanceof TairClientException) {
            throw (TairClientException) response;
        }
    } catch (InterruptedException e) {
        throw new TairClientException("tair client invoke error", e);
    } finally {
        responses.remove(packet.getChid());
        // For GC
        queue = null;
    }
    if (isDebugEnabled) {
        LOGGER.debug("return response [" + packet.getChid() + "],time is:" + System.currentTimeMillis());
        LOGGER.debug("current responses size: " + responses.size());
    }

    // do decode here
    if (response instanceof BasePacket) {
        ((BasePacket) response).decode();
    }
    return response;
}

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From source file:client.MultiplexingClient.java

private String bufferToString(ByteBuffer bb) {
    StringBuffer sb = new StringBuffer();
    for (int i = 0; i < bb.limit(); i++) {
        sb.append((char) bb.get(i));
    }/*  w ww  . j  av  a2s  .  c  o  m*/
    return sb.toString();
}

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From source file:org.ojai.beans.jackson.DocumentParser.java

@Override
public byte[] getBinaryValue(Base64Variant bv) throws IOException {
    ByteBuffer buf = r.getBinary();
    byte[] result = new byte[buf.remaining()];
    buf.get(result);
    return result;
}

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From source file:de.csdev.ebus.command.EBusCommandRegistry.java

/**
 * Checks if the given command method is acceptable for the unescaped telegram
 *
 * @param command//from  w  w w. j  av  a 2 s  .co  m
 * @param data
 * @return
 */
public boolean matchesCommand(IEBusCommandMethod command, ByteBuffer data) {

    Byte sourceAddress = (Byte) ObjectUtils.defaultIfNull(command.getSourceAddress(),
            Byte.valueOf((byte) 0x00));

    Byte targetAddress = (Byte) ObjectUtils.defaultIfNull(command.getDestinationAddress(),
            Byte.valueOf((byte) 0x00));

    try {

        ByteBuffer masterTelegram = EBusCommandUtils.buildMasterTelegram(command, sourceAddress, targetAddress,
                null);

        ByteBuffer mask = command.getMasterTelegramMask();

        for (int i = 0; i < mask.limit(); i++) {
            byte b = mask.get(i);

            if (b == (byte) 0xFF) {
                if (masterTelegram.get(i) != data.get(i)) {
                    break;
                }
            }
            if (i == mask.limit() - 1) {
                return true;
            }
        }
    } catch (EBusTypeException e) {
        logger.error("error!", e);
    }

    return false;
}

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From source file:org.apache.solr.handler.TestBlobHandler.java

private void compareInputAndOutput(String url, byte[] bytarr) throws IOException {

    HttpClient httpClient = cloudClient.getLbClient().getHttpClient();

    HttpGet httpGet = new HttpGet(url);
    HttpResponse entity = httpClient.execute(httpGet);
    ByteBuffer b = SimplePostTool.inputStreamToByteArray(entity.getEntity().getContent());
    try {//www .  j  a va 2 s  .  c o  m
        assertEquals(b.limit(), bytarr.length);
        for (int i = 0; i < bytarr.length; i++) {
            assertEquals(b.get(i), bytarr[i]);
        }
    } finally {
        httpGet.releaseConnection();
    }

}

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