Example usage for java.nio ByteBuffer array

Introduction

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

Prototype

public final byte[] array() 

Source Link

Document

Returns the byte array which this buffer is based on, if there is one.

Usage

From source file:io.fabric8.maven.docker.access.log.LogRequestor.java

private boolean readStreamFrame(InputStream is) throws IOException, LogCallback.DoneException {
    // Read the header, which is composed of eight bytes. The first byte is an integer
    // indicating the stream type (0 = stdin, 1 = stdout, 2 = stderr), the next three are thrown
    // out, and the final four are the size of the remaining stream as an integer.
    ByteBuffer headerBuffer = ByteBuffer.allocate(8);
    headerBuffer.order(ByteOrder.BIG_ENDIAN);
    try {/* w w w. j ava 2 s .  co m*/
        this.readFully(is, headerBuffer.array());
    } catch (NoBytesReadException e) {
        // Not bytes read for stream. Return false to stop consuming stream.
        return false;
    } catch (EOFException e) {
        throw new IOException("Failed to read log header. Could not read all 8 bytes. " + e.getMessage(), e);
    }

    // Grab the stream type (stdout, stderr, stdin) from first byte and throw away other 3 bytes.
    int type = headerBuffer.get();

    // Skip three bytes, then read size from remaining four bytes.
    int size = headerBuffer.getInt(4);

    // Ignore empty messages and keep reading.
    if (size <= 0) {
        return true;
    }

    // Read the actual message
    ByteBuffer payload = ByteBuffer.allocate(size);
    try {
        ByteStreams.readFully(is, payload.array());
    } catch (EOFException e) {
        throw new IOException("Failed to read log message. Could not read all " + size + " bytes. "
                + e.getMessage() + " [ Header: " + Hex.encodeHexString(headerBuffer.array()) + "]", e);
    }

    String message = Charsets.UTF_8.newDecoder().decode(payload).toString();
    callLogCallback(type, message);
    return true;
}

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From source file:de.hofuniversity.iisys.neo4j.websock.query.encoding.unsafe.DeflateJsonQueryHandler.java

@Override
public WebsockQuery decode(ByteBuffer buff) throws DecodeException {
    WebsockQuery query = null;/*from w w w . j  a  v  a  2s .  com*/

    try {
        //decompress
        final byte[] incoming = buff.array();
        fInflater.setInput(incoming);

        int totalSize = 0;

        int read = fInflater.inflate(fBuffer);
        while (read > 0) {
            totalSize += read;
            fBuffers.add(Arrays.copyOf(fBuffer, read));
            read = fInflater.inflate(fBuffer);
        }
        //TODO: directly add final slice?
        //      showed negative impact on performance

        final byte[] data = fuse(totalSize).array();

        final JSONObject obj = new JSONObject(new String(data));

        if (fDebug) {
            fTotalBytesIn += incoming.length;
            fLogger.log(Level.FINEST, "received compressed JSON message: " + incoming.length + " bytes\n"
                    + "total bytes received: " + fTotalBytesIn);
        }

        query = JsonConverter.fromJson(obj);
    } catch (Exception e) {
        e.printStackTrace();
        throw new DecodeException(buff, "failed to decode JSON", e);
    }

    return query;
}

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From source file:io.druid.query.search.FragmentSearchQuerySpec.java

@Override
public byte[] getCacheKey() {
    if (values == null) {
        return ByteBuffer.allocate(2).put(CACHE_TYPE_ID).put(caseSensitive ? (byte) 1 : 0).array();
    }/*  w w w  . j a v a2  s  .  co m*/

    final byte[][] valuesBytes = new byte[values.size()][];
    int valuesBytesSize = 0;
    int index = 0;
    for (String value : values) {
        valuesBytes[index] = StringUtils.toUtf8(value);
        valuesBytesSize += valuesBytes[index].length;
        ++index;
    }

    final ByteBuffer queryCacheKey = ByteBuffer.allocate(2 + valuesBytesSize).put(CACHE_TYPE_ID)
            .put(caseSensitive ? (byte) 1 : 0);

    for (byte[] bytes : valuesBytes) {
        queryCacheKey.put(bytes);
    }

    return queryCacheKey.array();
}

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From source file:io.druid.query.aggregation.HistogramAggregatorFactory.java

@Override
public byte[] getCacheKey() {
    byte[] fieldNameBytes = StringUtils.toUtf8(fieldName);
    ByteBuffer buf = ByteBuffer.allocate(1 + fieldNameBytes.length + Floats.BYTES * breaks.length)
            .put(CACHE_TYPE_ID).put(fieldNameBytes).put((byte) 0xFF);
    buf.asFloatBuffer().put(breaks);//from   w w w  .j  ava2  s  .  com

    return buf.array();
}

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From source file:com.alibaba.napoli.metamorphosis.client.consumer.RecoverStorageManager.java

@Override
public void append(final String group, final Message message) throws IOException {
    final Store store = this.getOrCreateStore(message.getTopic(), group);
    long key = message.getId();
    IOException error = null;//from ww  w. ja  v  a 2  s  .  co m
    for (int i = 0; i < 5; i++) {
        try {
            final ByteBuffer buf = ByteBuffer.allocate(16);
            buf.putLong(key);
            store.add(buf.array(), this.serializer.encodeObject(message));
            return;
        } catch (final IOException e) {
            final String msg = e.getMessage();
            // key??
            if (msg.contains("??")) {
                error = e;
                log.warn("recover store,key=" + key + "," + e.getMessage() + ",retry...");
                key += this.count.incrementAndGet();
            } else {
                throw e;
            }
        }
    }

    if (error != null) {
        throw error;
    }

}

---

From source file:at.treedb.util.SevenZip.java

/**
 * Returns the data of an archive entry// ww w .  j  a v  a  2 s  .co m
 * 
 * @param path
 *            archive entry path
 * @return binary archive data
 * @throws Exception
 */
public byte[] getData(String path) throws Exception {
    ArchiveEntry entry = entryMap.get(path);
    if (entry == null) {
        throw new Exception("SevenZipAccess.getData(): Path not found: " + path);
    }
    ByteBuffer buf = ByteBuffer.allocate(entry.getLength());
    channel.read(buf, entry.getOffset());
    return buf.array();
}

---

From source file:com.navercorp.pinpoint.common.server.bo.codec.stat.AgentStatEncoderTest.java

@Test
public void stats_should_be_encoded_and_decoded_into_same_value() {
    long initialTimestamp = System.currentTimeMillis();
    int numStats = RandomUtils.nextInt(1, 21);
    List<TestAgentStat> expectedAgentStats = this.createTestAgentStats(initialTimestamp, numStats);
    long baseTimestamp = AgentStatUtils.getBaseTimestamp(initialTimestamp);
    long timestampDelta = initialTimestamp - baseTimestamp;
    ByteBuffer qualifierBuffer = encoder.encodeQualifier(timestampDelta);
    ByteBuffer valueBuffer = encoder.encodeValue(expectedAgentStats);

    Buffer encodedQualifierBuffer = new FixedBuffer(qualifierBuffer.array());
    Buffer encodedValueBuffer = new FixedBuffer(valueBuffer.array());

    AgentStatDecodingContext context = new AgentStatDecodingContext();
    context.setAgentId(AGENT_ID);//from  www  .j ava2 s  . c om
    context.setBaseTimestamp(baseTimestamp);
    List<TestAgentStat> decodedAgentStats = decode(encodedQualifierBuffer, encodedValueBuffer, context);
    verify(expectedAgentStats, decodedAgentStats);
}

---

From source file:de.hofuniversity.iisys.neo4j.websock.query.encoding.unsafe.DeflateJsonQueryHandler.java

@Override
public boolean willDecode(ByteBuffer buff) {
    boolean valid = true;

    //TODO: actually check whether it's a query
    try {/*ww  w  . j  a  v a2  s  .  c o m*/
        //decompress
        fInflater.setInput(buff.array());

        int totalSize = 0;

        int read = fInflater.inflate(fBuffer);
        while (read > 0) {
            totalSize += read;
            fBuffers.add(Arrays.copyOf(fBuffer, read));
            read = fInflater.inflate(fBuffer);
        }
        //TODO: directly add final slice?
        //      showed negative impact on performance

        final byte[] data = fuse(totalSize).array();
        new JSONObject(new String(data));
    } catch (Exception e) {
        valid = false;
    }

    return valid;
}

---

From source file:com.joyent.manta.client.MantaClientSeekableByteChannelIT.java

@Test
public final void readFromDifferentPositions() throws IOException {
    final String name = UUID.randomUUID().toString();
    final String path = testPathPrefix + name;
    mantaClient.put(path, TEST_DATA);//from w w w  .j  a va2  s.co m

    try (SeekableByteChannel channel = mantaClient.getSeekableByteChannel(path)) {
        ByteBuffer first5Bytes = ByteBuffer.allocate(5);
        channel.read(first5Bytes);
        String firstPos = new String(first5Bytes.array(), StandardCharsets.UTF_8);
        Assert.assertEquals(firstPos, TEST_DATA.substring(0, 5), "Couldn't read the same bytes as written");

        try (SeekableByteChannel channel2 = channel.position(7L)) {
            ByteBuffer seventhTo12thBytes = ByteBuffer.allocate(5);
            channel2.read(seventhTo12thBytes);
            String secondPos = new String(seventhTo12thBytes.array(), StandardCharsets.UTF_8);
            Assert.assertEquals(secondPos, TEST_DATA.substring(7, 12),
                    "Couldn't read the same bytes as written");
        }
    }
}

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From source file:io.druid.segment.data.CompressedObjectStrategy.java

@Override
public byte[] toBytes(ResourceHolder<T> holder) {
    T val = holder.get();
    ByteBuffer buf = bufferFor(val);
    converter.combine(buf, val);
    return compressor.compress(buf.array());
}

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