Example usage for java.io DataInputStream readLong

Introduction

In this page you can find the example usage for java.io DataInputStream readLong.

Prototype

public final long readLong() throws IOException 

Source Link

Document

See the general contract of the readLong method of DataInput.

Usage

From source file:org.slc.sli.dal.encrypt.AesCipher.java

private Object decryptBinary(String data, Class<?> expectedType) {
    byte[] decoded = decryptToBytes(data);
    DataInputStream dis = new DataInputStream(new ByteArrayInputStream(decoded));
    try {//from www . j a  v  a  2  s . c  o  m
        if (Boolean.class.equals(expectedType)) {
            return dis.readBoolean();
        } else if (Integer.class.equals(expectedType)) {
            return dis.readInt();
        } else if (Long.class.equals(expectedType)) {
            return dis.readLong();
        } else if (Double.class.equals(expectedType)) {
            return dis.readDouble();
        } else {
            throw new RuntimeException("Unsupported type: " + expectedType.getCanonicalName());
        }
    } catch (IOException e) {
        throw new RuntimeException(e);
    } finally {
        try {
            dis.close();
        } catch (IOException e) {
            LOG.error("Unable to close DataInputStream!");
        }
    }
}

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From source file:com.facebook.infrastructure.db.SuperColumn.java

private SuperColumn defreezeSuperColumn(DataInputStream dis) throws IOException {
    String name = dis.readUTF();/*from  w  w  w .  j  av a 2  s . c o  m*/
    SuperColumn superColumn = new SuperColumn(name);
    superColumn.markForDeleteAt(dis.readLong());
    return superColumn;
}

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From source file:org.apache.jackrabbit.core.journal.FileRecordLog.java

/**
 * Create a new instance of this class. Opens a record log in read-only mode.
 *
 * @param logFile file containing record log
 * @throws java.io.IOException if an I/O error occurs
 *///  w  w w  .j a v a  2s .c  o  m
public FileRecordLog(File logFile) throws IOException {
    this.logFile = logFile;

    if (logFile.exists()) {
        DataInputStream in = new DataInputStream(new BufferedInputStream(new FileInputStream(logFile), 128));

        try {
            readHeader(in);
            previousRevision = in.readLong();
            lastRevision = previousRevision + logFile.length() - HEADER_SIZE;
        } finally {
            close(in);
        }
    } else {
        isNew = true;
    }
}

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From source file:com.linkedin.pinot.core.segment.index.SegmentMetadataImpl.java

private void loadCreationMeta(File crcFile) throws IOException {
    if (crcFile.exists()) {
        final DataInputStream ds = new DataInputStream(new FileInputStream(crcFile));
        _crc = ds.readLong();
        _creationTime = ds.readLong();/*from w ww  .  j  a  va2s .  c  o m*/
        ds.close();
    }
}

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From source file:org.eclipse.gyrex.cloud.internal.queue.Message.java

/**
 * Creates a new instance.//from  w w w.  ja  v a 2 s .  c  om
 * 
 * @param zooKeeperQueue
 * @param messageId
 * @param record
 * @param stat
 * @throws IOException
 */
public Message(final String messageId, final ZooKeeperQueue zooKeeperQueue, final byte[] record,
        final Stat stat) throws IOException {
    this.messageId = messageId;
    this.zooKeeperQueue = zooKeeperQueue;
    queueId = zooKeeperQueue.id;
    zkNodeDataVersion = stat.getVersion();

    final DataInputStream din = new DataInputStream(new ByteArrayInputStream(record));

    // serialized format version
    final int formatVersion = din.readInt();
    if (formatVersion != 1)
        throw new IllegalArgumentException(String
                .format("invalid record data: version mismatch (expected %d, found %d)", 1, formatVersion));

    // timeout
    invisibleTimeoutTS = din.readLong();

    // body size
    final int length = din.readInt();

    // body
    body = new byte[length];
    final int read = din.read(body);
    if (read != length)
        throw new IllegalArgumentException(
                String.format("invalid record data: body size mismatch (expected %d, read %d)", length, read));
}

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From source file:org.apache.hadoop.hbase.io.hfile.FixedFileTrailer.java

/**
 * Deserialize the fixed file trailer from the given stream. The version needs
 * to already be specified. Make sure this is consistent with
 * {@link #serialize(DataOutputStream)}.
 *
 * @param inputStream//from   www .  j ava  2s  .  co  m
 * @param version
 * @throws IOException
 */
void deserialize(DataInputStream inputStream) throws IOException {
    HFile.checkFormatVersion(majorVersion);

    BlockType.TRAILER.readAndCheck(inputStream);

    fileInfoOffset = inputStream.readLong();
    loadOnOpenDataOffset = inputStream.readLong();
    dataIndexCount = inputStream.readInt();

    if (majorVersion == 1) {
        inputStream.readLong(); // Read and skip metaIndexOffset.
    } else {
        uncompressedDataIndexSize = inputStream.readLong();
    }
    metaIndexCount = inputStream.readInt();

    totalUncompressedBytes = inputStream.readLong();
    entryCount = majorVersion == 1 ? inputStream.readInt() : inputStream.readLong();
    compressionCodec = Compression.Algorithm.values()[inputStream.readInt()];
    if (majorVersion > 1) {
        numDataIndexLevels = inputStream.readInt();
        firstDataBlockOffset = inputStream.readLong();
        lastDataBlockOffset = inputStream.readLong();
        comparatorClassName = Bytes.readStringFixedSize(inputStream, MAX_COMPARATOR_NAME_LENGTH);
    }

    int version = inputStream.readInt();
    expectMajorVersion(extractMajorVersion(version));
    expectMinorVersion(extractMinorVersion(version));
}

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From source file:gridool.util.xfer.TransferUtils.java

public static void sendfile(@Nonnull final File file, final long fromPos, final long count,
        @Nullable final String writeDirPath, @Nonnull final InetAddress dstAddr, final int dstPort,
        final boolean append, final boolean sync, @Nonnull final TransferClientHandler handler)
        throws IOException {
    if (!file.exists()) {
        throw new IllegalArgumentException(file.getAbsolutePath() + " does not exist");
    }/*from  w w w .j  av  a2s  . co m*/
    if (!file.isFile()) {
        throw new IllegalArgumentException(file.getAbsolutePath() + " is not file");
    }
    if (!file.canRead()) {
        throw new IllegalArgumentException(file.getAbsolutePath() + " cannot read");
    }

    final SocketAddress dstSockAddr = new InetSocketAddress(dstAddr, dstPort);
    SocketChannel channel = null;
    Socket socket = null;
    final OutputStream out;
    try {
        channel = SocketChannel.open();
        socket = channel.socket();
        socket.connect(dstSockAddr);
        out = socket.getOutputStream();
    } catch (IOException e) {
        LOG.error("failed to connect: " + dstSockAddr, e);
        IOUtils.closeQuietly(channel);
        NetUtils.closeQuietly(socket);
        throw e;
    }

    DataInputStream din = null;
    if (sync) {
        InputStream in = socket.getInputStream();
        din = new DataInputStream(in);
    }
    final DataOutputStream dos = new DataOutputStream(out);
    final StopWatch sw = new StopWatch();
    FileInputStream src = null;
    final long nbytes;
    try {
        src = new FileInputStream(file);
        FileChannel fc = src.getChannel();

        String fileName = file.getName();
        IOUtils.writeString(fileName, dos);
        IOUtils.writeString(writeDirPath, dos);
        long xferBytes = (count == -1L) ? fc.size() : count;
        dos.writeLong(xferBytes);
        dos.writeBoolean(append); // append=false
        dos.writeBoolean(sync);
        if (handler == null) {
            dos.writeBoolean(false);
        } else {
            dos.writeBoolean(true);
            handler.writeAdditionalHeader(dos);
        }

        // send file using zero-copy send
        nbytes = fc.transferTo(fromPos, xferBytes, channel);
        if (LOG.isDebugEnabled()) {
            LOG.debug("Sent a file '" + file.getAbsolutePath() + "' of " + nbytes + " bytes to "
                    + dstSockAddr.toString() + " in " + sw.toString());
        }

        if (sync) {// receive ack in sync mode
            long remoteRecieved = din.readLong();
            if (remoteRecieved != xferBytes) {
                throw new IllegalStateException(
                        "Sent " + xferBytes + " bytes, but remote node received " + remoteRecieved + " bytes");
            }
        }

    } catch (FileNotFoundException e) {
        LOG.error(PrintUtils.prettyPrintStackTrace(e, -1));
        throw e;
    } catch (IOException e) {
        LOG.error(PrintUtils.prettyPrintStackTrace(e, -1));
        throw e;
    } finally {
        IOUtils.closeQuietly(src);
        IOUtils.closeQuietly(din, dos);
        IOUtils.closeQuietly(channel);
        NetUtils.closeQuietly(socket);
    }
}

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From source file:org.gdg.frisbee.android.cache.ModelCache.java

private long readExpirationFromDisk(InputStream is) throws IOException {
    DataInputStream din = new DataInputStream(is);
    long expiration = din.readLong();
    din.close();/*from ww  w  .j av  a2 s .co m*/
    return expiration;
}

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From source file:com.epam.catgenome.manager.reference.io.NibDataReader.java

private void seekBCDISWithIndexFile(final BlockCompressedDataInputStream stream, final DataInputStream index,
        final long positon) throws IOException {
    //correct seek in file
    long seekPosition = positon + stream.getPosition();
    long filePosition = index.readLong();
    long seekPos = index.readLong();
    long helpSeekPosition = seekPosition - seekPos;
    while (helpSeekPosition >= 0) {
        seekPosition = helpSeekPosition;
        filePosition = index.readLong();
        seekPos = index.readLong();/*w w  w .ja  v  a 2 s  . c o m*/
        helpSeekPosition = seekPosition - seekPos;
    }
    stream.seek(filePosition + seekPosition);
}

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From source file:net.sf.gazpachoquest.rest.auth.TokenStore.java

/**
 * Load the current set of tokens from the token file. If reading the tokens
 * fails or the token file does not exist, tokens will be generated on
 * demand.//  ww  w  . j av  a 2s  . c o m
 */
private void loadTokens() {
    if (tokenFile.isFile() && tokenFile.canRead()) {
        FileInputStream fin = null;
        DataInputStream keyInputStream = null;
        try {
            fin = new FileInputStream(tokenFile);
            keyInputStream = new DataInputStream(fin);
            int newCurrentToken = keyInputStream.readInt();
            long newNextUpdate = keyInputStream.readLong();
            SecretKey[] newKeys = new SecretKey[TOKEN_BUFFER_SIZE];
            for (int i = 0; i < newKeys.length; i++) {
                int isNull = keyInputStream.readInt();
                if (isNull == 1) {
                    int l = keyInputStream.readInt();
                    byte[] b = new byte[l];
                    keyInputStream.read(b);
                    newKeys[i] = new SecretKeySpec(b, HMAC_SHA1);
                } else {
                    newKeys[i] = null;
                }
            }

            // assign the tokes and schedule a next update
            nextUpdate = newNextUpdate;
            currentToken = newCurrentToken;
            currentTokens = newKeys;

        } catch (IOException e) {

            log.error("Failed to load cookie keys " + e.getMessage());

        } finally {

            if (keyInputStream != null) {
                try {
                    keyInputStream.close();
                } catch (IOException e) {
                }
            } else if (fin != null) {
                try {
                    fin.close();
                } catch (IOException e) {
                }
            }
        }
    }

    // if there was a failure to read the current tokens, create new ones
    if (currentTokens == null) {
        currentTokens = new SecretKey[TOKEN_BUFFER_SIZE];
        nextUpdate = System.currentTimeMillis();
        currentToken = 0;
    }
}

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