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.dreamworks.dsp.server.EmbeddedSftpServer.java

private BigInteger decodeBigInt(ByteBuffer bb) {
    int len = bb.getInt();
    byte[] bytes = new byte[len];
    bb.get(bytes);
    return new BigInteger(bytes);
}

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From source file:com.offbynull.portmapper.pcp.ThirdPartyPcpOption.java

/**
 * Constructs a {@link ThirdPartyPcpOption} by parsing a buffer.
 * @param buffer buffer containing PCP option data
 * @throws NullPointerException if any argument is {@code null}
 * @throws BufferUnderflowException if not enough data is available in {@code buffer}
 * @throws IllegalArgumentException if option code is not {@code 1}
 *//* w  w  w.  j av a2s .  c  o m*/
public ThirdPartyPcpOption(ByteBuffer buffer) {
    super(buffer);
    Validate.isTrue(super.getCode() == 1);
    byte[] addrArr = new byte[16];
    buffer.get(addrArr);
    try {
        internalIpAddress = InetAddress.getByAddress(addrArr);
    } catch (UnknownHostException uhe) {
        throw new IllegalStateException(uhe); // should never happen
    }
}

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From source file:com.acciente.oacc.sql.internal.StrongCleanablePasswordEncryptor.java

private byte[] getCleanedBytes(char[] password) {
    final ByteBuffer byteBuffer = StandardCharsets.UTF_8
            .encode(CharBuffer.wrap(Normalizer.normalizeToNfc(password)));
    final byte[] byteArray = new byte[byteBuffer.remaining()];
    byteBuffer.get(byteArray);
    Arrays.fill(byteBuffer.array(), (byte) 0);
    return byteArray;
}

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From source file:com.github.cambierr.lorawanpacket.semtech.TxAck.java

public TxAck(byte[] _randoms, ByteBuffer _raw) throws MalformedPacketException {
    super(_randoms, PacketType.TX_ACK);

    byte[] txt = new byte[_raw.remaining()];
    _raw.get(txt);

    JSONObject jo;/*from   w w w  .jav a 2  s  .  c  o  m*/

    try {
        jo = new JSONObject(new String(txt));
    } catch (JSONException ex) {
        throw new MalformedPacketException("malformed json");
    }

    if (!jo.has("txpk_ack") || !jo.get("txpk_ack").getClass().equals(JSONObject.class)) {
        throw new MalformedPacketException("malformed json");
    }

    if (!jo.getJSONObject("txpk_ack").has("error")) {
        throw new MalformedPacketException("malformed json");
    }

    error = Error.parse(jo.getJSONObject("txpk_ack").getString("error"));
}

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From source file:com.dreamworks.dsp.server.EmbeddedSftpServer.java

private PublicKey decodePublicKey() throws Exception {
    InputStream stream = new ClassPathResource("keys/sftp_rsa.pub").getInputStream();
    byte[] decodeBuffer = Base64.decodeBase64(StreamUtils.copyToByteArray(stream));
    ByteBuffer bb = ByteBuffer.wrap(decodeBuffer);
    int len = bb.getInt();
    byte[] type = new byte[len];
    bb.get(type);
    if ("ssh-rsa".equals(new String(type))) {
        BigInteger e = decodeBigInt(bb);
        BigInteger m = decodeBigInt(bb);
        RSAPublicKeySpec spec = new RSAPublicKeySpec(m, e);
        return KeyFactory.getInstance("RSA").generatePublic(spec);

    } else {//from  w  w  w  .j av  a2  s. c o m
        throw new IllegalArgumentException("Only supports RSA");
    }
}

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From source file:net.jradius.packet.PacketFactory.java

public static RadiusPacket parseUDP(int code, int identifier, int length, ByteBuffer buffer, boolean pool)
        throws RadiusException, IOException {
    RadiusPacket rp = null;/*from   w  w w  .j av a2s  . co  m*/
    Integer key = new Integer(code);

    if (pktObjectPool != null && pool) {
        try {
            rp = (RadiusPacket) pktObjectPool.borrowObject(key);
        } catch (Exception e) {
            e.printStackTrace();
        }
    }

    if (rp == null) {
        Class<?> c = (Class<?>) codeMap.get(key);

        if (c == null) {
            throw new RadiusException("bad radius code - " + key);
        }

        try {
            rp = (RadiusPacket) c.newInstance();
        } catch (Exception e) {
            RadiusLog.error(e.getMessage(), e);
            return null;
        }
    }

    byte[] bAuthenticator = new byte[16];
    buffer.get(bAuthenticator);

    rp.setIdentifier(identifier);
    rp.setAuthenticator(bAuthenticator);

    length -= RadiusPacket.RADIUS_HEADER_LENGTH;
    if (length > 0) {
        RadiusFormat.setAttributeBytes(rp, buffer, length);
    }

    return rp;
}

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From source file:name.martingeisse.stackd.server.section.storage.CassandraSectionStorage.java

@Override
public byte[] loadSectionRelatedObject(final SectionDataId id) {
    try {/*from ww w . ja  va 2 s.com*/
        for (final Row row : fetch(QueryBuilder.eq("id", id.getIdentifierText()))) {
            final ByteBuffer dataBuffer = row.getBytes("data");
            final byte[] data = new byte[dataBuffer.remaining()];
            dataBuffer.get(data);
            return data;
        }
        return null;
    } catch (final Exception e) {
        throw new RuntimeException(e);
    }
}

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From source file:edu.umn.cs.spatialHadoop.nasa.HDFRecordReader.java

/**
 * Converts a water mask from the byte_array format to the bit_array format.
 * In the byte array format, 0 means land, anything else means water.
 * In the bit array format, false means land and true means water.
 * Each square with side length of <code>size</code> will be converted to
 * one value in the output bit array depending on average value in this
 * square box. If at least half of the values are land (i.e., 0), the
 * corresponding value in the bit array is set to false. Otherwise, the
 * corresponding value in the bit array is set to true. 
 * @param waterMaskBytes/*from ww  w .j  a  v a 2 s  .c o  m*/
 * @param size
 * @return
 */
static BitArray convertWaterMaskToBits(ByteBuffer waterMaskBytes, int size) {
    int wmRes = (int) Math.sqrt(waterMaskBytes.limit());
    int dataRes = wmRes / size;
    BitArray waterMaskBits = new BitArray(dataRes * dataRes);
    // Size of each pixel of the data when mapped to the water mask
    for (int row = 0; row < dataRes; row++)
        for (int col = 0; col < dataRes; col++) {
            int r1 = row * size;
            int r2 = (row + 1) * size;
            int c1 = col * size;
            int c2 = (col + 1) * size;

            byte wm_sum = 0;
            for (int r = r1; r < r2; r++)
                for (int c = c1; c < c2; c++) {
                    byte wm_value = waterMaskBytes.get(r * wmRes + c);
                    if (wm_value == 0)
                        wm_sum++;
                }
            waterMaskBits.set(row * dataRes + col, wm_sum < (size * size) / 2);
        }
    return waterMaskBits;
}

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From source file:com.stratio.ingestion.sink.kafka.KafkaSinkTest.java

@Test
public void test() throws EventDeliveryException, UnsupportedEncodingException {
    Transaction tx = channel.getTransaction();
    tx.begin();//from w ww.j  a va 2s  .  c o  m

    ObjectNode jsonBody = new ObjectNode(JsonNodeFactory.instance);
    jsonBody.put("myString", "foo");
    jsonBody.put("myInt32", 32);

    Map<String, String> headers = new HashMap<String, String>();
    headers.put("myString", "bar");
    headers.put("myInt64", "64");
    headers.put("myBoolean", "true");
    headers.put("myDouble", "1.0");
    headers.put("myNull", "foobar");

    Event event = EventBuilder.withBody(jsonBody.toString().getBytes(Charsets.UTF_8), headers);
    channel.put(event);

    tx.commit();
    tx.close();

    kafkaSink.process();

    kafka.api.FetchRequest req = new FetchRequestBuilder().clientId(CLIENT_ID).addFetch("test", 0, 0L, 100)
            .build();
    FetchResponse fetchResponse = simpleConsumer.fetch(req);
    ByteBufferMessageSet messageSet = fetchResponse.messageSet("test", 0);

    Assert.assertTrue(messageSet.sizeInBytes() > 0);
    for (MessageAndOffset messageAndOffset : messageSet) {
        ByteBuffer payload = messageAndOffset.message().payload();
        byte[] bytes = new byte[payload.limit()];
        payload.get(bytes);
        String message = new String(bytes, "UTF-8");
        Assert.assertNotNull(message);
        Assert.assertEquals(message, "{\"myString\":\"foo\",\"myInt32\":32}");
    }
}

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From source file:com.stratio.ingestion.sink.kafka.KafkaSinkTestIT.java

@Test
public void test() throws EventDeliveryException, UnsupportedEncodingException {
    Transaction tx = channel.getTransaction();
    tx.begin();//from  www.ja  va 2  s  . c om

    ObjectNode jsonBody = new ObjectNode(JsonNodeFactory.instance);
    jsonBody.put("myString", "foo");
    jsonBody.put("myInt32", 32);

    Map<String, String> headers = new HashMap<String, String>();
    headers.put("myString", "bar");
    headers.put("myInt64", "64");
    headers.put("myBoolean", "true");
    headers.put("myDouble", "1.0");
    headers.put("myNull", "foobar");

    Event event = EventBuilder.withBody(jsonBody.toString().getBytes(Charsets.UTF_8), headers);
    channel.put(event);

    tx.commit();
    tx.close();

    kafkaSink.process();

    kafka.api.FetchRequest req = new FetchRequestBuilder().clientId(CLIENT_ID).addFetch("test", 0, 0L, 100)
            .build();
    FetchResponse fetchResponse = simpleConsumer.fetch(req);
    ByteBufferMessageSet messageSet = fetchResponse.messageSet("test", 0);

    for (MessageAndOffset messageAndOffset : messageSet) {
        ByteBuffer payload = messageAndOffset.message().payload();
        byte[] bytes = new byte[payload.limit()];
        payload.get(bytes);
        String message = new String(bytes, "UTF-8");
        Assert.assertNotNull(message);
        Assert.assertEquals(message, "{\"myString\":\"foo\",\"myInt32\":32}");
    }
}

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