Example usage for java.nio ByteBuffer wrap

List of usage examples for java.nio ByteBuffer wrap

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Introduction

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

Prototype

public static ByteBuffer wrap(byte[] array)

Source Link

Document

Creates a new byte buffer by wrapping the given byte array.

Usage

From source file:com.ottogroup.bi.spqr.pipeline.statistics.MicroPipelineStatistics.java

/**
 * Converts the provided byte array into a {@link MicroPipelineStatistics} representation
 * @param statsContent//  ww  w  .j ava  2  s . c o  m
 * @return
 */
public static MicroPipelineStatistics fromByteArray(final byte[] statsContent) {

    MicroPipelineStatistics stats = new MicroPipelineStatistics();
    ByteBuffer buf = ByteBuffer.wrap(statsContent);

    // ensure that the order is the same as when populating the array 
    stats.setNumOfMessages(buf.getInt());
    stats.setStartTime(buf.getLong());
    stats.setEndTime(buf.getLong());
    stats.setMinDuration(buf.getInt());
    stats.setMaxDuration(buf.getInt());
    stats.setAvgDuration(buf.getInt());
    stats.setMinSize(buf.getInt());
    stats.setMaxSize(buf.getInt());
    stats.setAvgSize(buf.getInt());
    stats.setErrors(buf.getInt());

    byte[] procNodeId = new byte[buf.getInt()];
    buf.get(procNodeId);

    byte[] pipelineId = new byte[buf.getInt()];
    buf.get(pipelineId);

    byte[] componentId = new byte[buf.getInt()];
    buf.get(componentId);

    stats.setProcessingNodeId(new String(procNodeId));
    stats.setPipelineId(new String(pipelineId));
    stats.setComponentId(new String(componentId));

    return stats;
}

From source file:com.netflix.astyanax.thrift.ThriftAllRowsImpl.java

/**
 * Each call to .iterator() returns a new context starting at the beginning
 * of the column family./*  w  w w  .j av  a 2s .  c o  m*/
 */
@Override
public Iterator<Row<K, C>> iterator() {
    return new Iterator<Row<K, C>>() {
        private KeyRange range;
        private org.apache.cassandra.thrift.KeySlice lastRow;
        private List<org.apache.cassandra.thrift.KeySlice> list = null;
        private Iterator<org.apache.cassandra.thrift.KeySlice> iter = null;
        private boolean bContinueSearch = true;
        private boolean bIgnoreTombstones = true;

        {
            String startToken = query.getStartToken() == null ? partitioner.getMinToken()
                    : query.getStartToken();
            String endToken = query.getEndToken() == null ? partitioner.getMaxToken() : query.getEndToken();

            range = new KeyRange().setCount(query.getBlockSize()).setStart_token(startToken)
                    .setEnd_token(endToken);

            if (query.getIncludeEmptyRows() == null) {
                if (query.getPredicate().isSetSlice_range()
                        && query.getPredicate().getSlice_range().getCount() == 0) {
                    bIgnoreTombstones = false;
                }
            } else {
                bIgnoreTombstones = !query.getIncludeEmptyRows();
            }
        }

        @Override
        public boolean hasNext() {
            // Get the next block
            while (iter == null || (!iter.hasNext() && bContinueSearch)) {
                if (lastRow != null) {
                    // Determine the start token for the next page
                    String token = partitioner.getTokenForKey(ByteBuffer.wrap(lastRow.getKey()));
                    if (query.getRepeatLastToken()) {
                        // Start token is non-inclusive
                        range.setStart_token(partitioner.getTokenMinusOne(token));
                    } else {
                        range.setStart_token(token);
                    }
                }

                // Get the next block of rows from cassandra, exit if none returned
                list = query.getNextBlock(range);
                if (list == null || list.isEmpty()) {
                    return false;
                }

                // Since we may trim tombstones set a flag indicating whether a complete
                // block was returned so we can know to try to fetch the next one
                bContinueSearch = (list.size() == query.getBlockSize());

                // Trim the list from tombstoned rows, i.e. rows with no columns
                iter = list.iterator();
                if (iter == null || !iter.hasNext()) {
                    return false;
                }

                KeySlice previousLastRow = lastRow;
                lastRow = Iterables.getLast(list);

                if (query.getRepeatLastToken() && previousLastRow != null) {
                    iter.next();
                    iter.remove();
                }

                if (iter.hasNext() && bIgnoreTombstones) {
                    // Discard any tombstones
                    while (iter.hasNext()) {
                        KeySlice row = iter.next();
                        if (row.getColumns().isEmpty()) {
                            iter.remove();
                        }
                    }

                    // Get the iterator again
                    iter = list.iterator();
                }
            }
            return iter.hasNext();
        }

        @Override
        public Row<K, C> next() {
            org.apache.cassandra.thrift.KeySlice row = iter.next();
            return new ThriftRowImpl<K, C>(columnFamily.getKeySerializer().fromBytes(row.getKey()),
                    ByteBuffer.wrap(row.getKey()), new ThriftColumnOrSuperColumnListImpl<C>(row.getColumns(),
                            columnFamily.getColumnSerializer()));
        }

        @Override
        public void remove() {
            throw new IllegalStateException();
        }
    };
}

From source file:net.lightbody.bmp.proxy.jetty.http.nio.SocketChannelOutputStream.java

public void write(byte[] buf) throws IOException {
    if (buf.length > _buffer.capacity())
        _flush = ByteBuffer.wrap(buf);
    else {//w  w  w  .  j  a v a2 s.  c  o  m
        _buffer.clear();
        _buffer.put(buf);
        _buffer.flip();
        _flush = _buffer;
    }
    flushBuffer();
}

From source file:com.servioticy.queueclient.KestrelThriftClient.java

@Override
protected boolean putImpl(Object item) {
    int numKestrels = _kestrels.size();
    int kestrelIndex = Math.abs(item.hashCode()) % numKestrels;
    KestrelClientInfo info;/*from   w  w w  . ja  v a2  s.  c  o m*/
    long now = System.currentTimeMillis();
    for (int i = 0; i < numKestrels; i++) {
        info = _kestrels.get((kestrelIndex + i) % numKestrels);
        if (now > info.blacklistTillTimeMs) {
            List<ByteBuffer> items = new ArrayList<ByteBuffer>();
            items.add(ByteBuffer.wrap(serialize(item)));
            try {
                if (item instanceof String) {
                    info.getValidClient().put(getRelativeAddress(), (String) item, 0);
                    return true;
                } else if (info.getValidClient().put(getRelativeAddress(), items, 0) == 1) {
                    return true;
                }
            } catch (TException e) {
                blacklist(info, e);
                continue;
            }
        }
    }
    return false;
}

From source file:SequentialFramesRecordReader.java

public List<List<Writable>> sequenceRecord(URI uri, DataInputStream dataInputStream) throws IOException {
    byte[] data = IOUtils.toByteArray(dataInputStream);
    ByteBuffer bb = ByteBuffer.wrap(data);
    SequentialFramesRecordReader.FixedByteBufferSeekableByteChannel sbc = new SequentialFramesRecordReader.FixedByteBufferSeekableByteChannel(
            bb);/*ww w .j  a v a 2 s  .co m*/
    return this.loadData(sbc, null);
}

From source file:reactor.io.netty.http.PostAndGetTests.java

private void get(String path, SocketAddress address) {
    try {/* w w  w .  ja v a  2s  . c om*/
        StringBuilder request = new StringBuilder().append(String.format("GET %s HTTP/1.1\r\n", path))
                .append("Connection: Keep-Alive\r\n").append("\r\n");
        java.nio.channels.SocketChannel channel = java.nio.channels.SocketChannel.open(address);
        System.out.println(String.format("get: request >> [%s]", request.toString()));
        channel.write(ByteBuffer.wrap(request.toString().getBytes()));
        ByteBuffer buf = ByteBuffer.allocate(4 * 1024);
        while (channel.read(buf) > -1)
            ;
        String response = new String(buf.array());
        System.out.println(String.format("get: << Response: %s", response));
        channel.close();
    } catch (IOException e) {
        e.printStackTrace();
    }
}

From source file:com.amazonaws.hbase.kinesis.BatchedStreamSource.java

private void flushBuffer() throws IOException {
    PutRecordRequest putRecordRequest = new PutRecordRequest();
    putRecordRequest.setStreamName(config.KINESIS_INPUT_STREAM);
    putRecordRequest.setData(ByteBuffer.wrap(bufferToBytes()));
    putRecordRequest.setPartitionKey(String.valueOf(UUID.randomUUID()));
    kinesisClient.putRecord(putRecordRequest);
    buffer.clear();/*w ww .  j a  v a  2 s  .com*/
}

From source file:com.tinspx.util.io.callbacks.FileTests.java

private static <T extends ContentCallback<? super BasicError.Listener, ? super ByteBuffer>> void testWriteSingle(
        byte[] ref, Supplier<T> supplier, Function<? super T, byte[]> function) throws IOException {
    Closer closer = Closer.create();//from w  ww  .  j  av  a2s  .c  o m
    T c = supplier.get();
    try {
        closer.register(Content.completeOnClose(null, c));
        c.onContentStart(null);
        for (byte b : ref) {
            c.onContent(null, ByteBuffer.wrap(new byte[] { b }));
        }
        c.onContentComplete(null);
        assertArrayEquals(ref, function.apply(c));
    } catch (Throwable t) {
        throw closer.rethrow(t);
    } finally {
        closer.close();
    }
}

From source file:com.easemob.dataexport.utils.ConversionUtils.java

public static ByteBuffer bytebuffer(String s) {
    return ByteBuffer.wrap(bytes(s));
}

From source file:pl.bristleback.server.bristle.engine.tomcat.servlet.TomcatServletWebsocketEngine.java

@Override
public void sendMessage(WebsocketConnector connector, byte[] contentAsBytes) throws Exception {
    ByteBuffer buffer = ByteBuffer.wrap(contentAsBytes);
    ((TomcatConnector) connector).getConnection().writeBinaryMessage(buffer);
}