Example usage for java.io DataOutputStream writeLong

List of usage examples for java.io DataOutputStream writeLong

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Introduction

In this page you can find the example usage for java.io DataOutputStream writeLong.

Prototype

public final void writeLong(long v) throws IOException

Source Link

Document

Writes a long to the underlying output stream as eight bytes, high byte first.

Usage

From source file:com.yahoo.omid.tso.TSOHandler.java

/**
 * Handle the FullAbortReport message//from www. j  a  v  a  2  s  .  c  om
 */
public void handle(FullAbortRequest msg, ChannelHandlerContext ctx) {
    synchronized (sharedState) {
        DataOutputStream toWAL = sharedState.toWAL;
        try {
            toWAL.writeByte(LoggerProtocol.FULLABORT);
            toWAL.writeLong(msg.startTimestamp);
        } catch (IOException e) {
            e.printStackTrace();
        }
        sharedState.processFullAbort(msg.startTimestamp);
    }
    synchronized (sharedMsgBufLock) {
        queueFullAbort(msg.startTimestamp);
    }
}

From source file:com.codefollower.lealone.omid.tso.TSOHandler.java

private void createAbortedSnapshot() {
    ByteArrayOutputStream baos = new ByteArrayOutputStream();
    DataOutputStream toWAL = new DataOutputStream(baos);

    long snapshot = sharedState.hashmap.getAndIncrementAbortedSnapshot();

    try {//from w  w w.  ja v  a2 s  . co m
        toWAL.writeByte(LoggerProtocol.SNAPSHOT);
        toWAL.writeLong(snapshot);
        for (AbortedTransaction aborted : sharedState.hashmap.halfAborted) {
            // ignore aborted transactions from last snapshot
            if (aborted.getSnapshot() < snapshot) {
                toWAL.writeByte(LoggerProtocol.ABORT);
                toWAL.writeLong(aborted.getStartTimestamp());
            }
        }
    } catch (IOException e) {
        // can't happen
        throw new RuntimeException(e);
    }

    sharedState.addRecord(baos.toByteArray(), noCallback, null);
}

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

private void writeExpirationToDisk(OutputStream os, DateTime expiresAt) throws IOException {

    DataOutputStream out = new DataOutputStream(os);

    out.writeLong(expiresAt.getMillis());

    out.close();/* w w w .j  a  v  a 2s  .com*/
}

From source file:org.apache.hadoop.hdfs.server.datanode.BlockSender.java

/**
 * Write checksum header to the output stream
 *//*from w w w .j av  a2 s  . co  m*/
private void writeChecksumHeader(DataOutputStream out) throws IOException {
    try {
        checksum.writeHeader(out);
        if (chunkOffsetOK) {
            out.writeLong(offset);
        }
        out.flush();
    } catch (IOException e) { //socket error
        throw ioeToSocketException(e);
    }
}

From source file:com.adito.notification.Notifier.java

void write(Message message) throws IOException {
    if (log.isDebugEnabled())
        log.debug("Writing message " + message.getId() + " '" + message.getSubject() + "' to disk");
    FileOutputStream fout = new FileOutputStream(
            new File(queueDirectory, String.valueOf(message.getId()) + ".msg"));
    try {//from  w w w .j  a  v a 2 s  .  c  om
        DataOutputStream dout = new DataOutputStream(fout);
        dout.writeLong(message.getId());
        dout.writeUTF(message.getSinkName());
        dout.writeBoolean(message.isUrgent());
        dout.writeUTF(message.getSubject());
        for (Iterator i = message.getRecipients().iterator(); i.hasNext();) {
            Recipient r = (Recipient) i.next();
            dout.writeInt(r.getRecipientType());
            dout.writeUTF(r.getRecipientAlias() == null ? "" : r.getRecipientAlias());
            dout.writeUTF(r.getRealmName() == null ? "" : r.getRealmName());
        }
        dout.writeInt(0);
        for (Iterator i = message.getParameterNames(); i.hasNext();) {
            String key = (String) i.next();
            dout.writeInt(1);
            dout.writeUTF(key);
            dout.writeUTF(message.getParameter(key));
        }
        dout.writeInt(0);
        dout.writeUTF(message.getContent());
        dout.writeUTF(message.getLastMessage());
    } finally {
        fout.close();
    }
}

From source file:ch.scythe.hsr.api.TimeTableAPI.java

private void updateCache(String dateString, Date cacheTimestamp, String login, String password)
        throws RequestException, ServerConnectionException, ResponseParseException, AccessDeniedException {

    Log.i(LOGGING_TAG, "Starting to read data from the server.");
    long before = System.currentTimeMillis();

    try {//from www . j  a v a 2 s.  c om

        HttpGet get = createHttpGet(URL + METHOD_GET_TIMETABLE + login, login, password);
        HttpClient httpclient = new DefaultHttpClient();

        BasicHttpResponse httpResponse = (BasicHttpResponse) httpclient.execute(get);
        InputStream jsonStream = null;
        int httpStatus = httpResponse.getStatusLine().getStatusCode();
        if (httpStatus == HttpStatus.SC_OK) {
            jsonStream = httpResponse.getEntity().getContent();
        } else if (httpStatus == HttpStatus.SC_UNAUTHORIZED) {
            throw new AccessDeniedException();
        } else {
            throw new RequestException("Request not successful. \nHTTP Status: " + httpStatus);
        }

        Log.i(LOGGING_TAG, "Finished reading from server.");

        // convert JSON to Java objects
        JsonTimetableWeek serverData = new GsonParser().parse(jsonStream);
        UiWeek uiWeek = DataAssembler.convert(serverData);

        // open streams to cache the files
        DataOutputStream cacheTimestampOutputStream = new DataOutputStream(
                context.openFileOutput(TIMETABLE_CACHE_TIMESTAMP, Context.MODE_PRIVATE));
        FileOutputStream xmlCacheOutputStream = context.openFileOutput(TIMETABLE_CACHE_SERIALIZED,
                Context.MODE_PRIVATE);

        // write data to streams
        ObjectOutputStream out = new ObjectOutputStream(xmlCacheOutputStream);
        out.writeObject(uiWeek);
        cacheTimestampOutputStream.writeLong(new Date().getTime());

        safeCloseStream(xmlCacheOutputStream);
        safeCloseStream(cacheTimestampOutputStream);

    } catch (UnsupportedEncodingException e) {
        throw new RequestException(e);
    } catch (IllegalStateException e) {
        throw new RequestException(e);
    } catch (IOException e) {
        throw new ServerConnectionException(e);
    }

    Log.i(LOGGING_TAG,
            "Read and parsed data from the server in " + (System.currentTimeMillis() - before) + "ms.");
}

From source file:com.yahoo.omid.tso.TSOHandler.java

public void createAbortedSnapshot() {

    ByteArrayOutputStream baos = new ByteArrayOutputStream();
    DataOutputStream toWAL = new DataOutputStream(baos);

    long snapshot = sharedState.hashmap.getAndIncrementAbortedSnapshot();

    try {//ww  w.ja v a2s.c  om
        toWAL.writeByte(LoggerProtocol.SNAPSHOT);
        toWAL.writeLong(snapshot);
        for (AbortedTransaction aborted : sharedState.hashmap.halfAborted) {
            // ignore aborted transactions from last snapshot
            if (aborted.getSnapshot() < snapshot) {
                toWAL.writeByte(LoggerProtocol.ABORT);
                toWAL.writeLong(aborted.getStartTimestamp());
            }
        }
    } catch (IOException e) {
        // can't happen
        throw new RuntimeException(e);
    }

    sharedState.addRecord(baos.toByteArray(), noCallback, null);
}

From source file:com.hadoopvietnam.cache.memcached.MemcachedCache.java

/**
 * Get the byte[] from a ArrayList&lt;Long&gt;.
 *
 * @param inListOfLongs the list of longs to convert
 * @return the byte[] representation of the ArrayList
 * @throws IOException thrown if any errors encountered
 *///  www  .  j av a2  s  . c o  m
protected byte[] getBytesFromList(final List<Long> inListOfLongs) throws IOException {
    if (inListOfLongs == null) {
        return null;
    }

    ByteArrayOutputStream bytes = new ByteArrayOutputStream();
    DataOutputStream out = new DataOutputStream(bytes);
    byte[] toReturn = null;
    try {
        for (Long oneLong : inListOfLongs) {
            out.writeLong(oneLong);
            out.flush();
        }

        toReturn = bytes.toByteArray();
    } finally {
        out.close();
    }

    return toReturn;
}

From source file:org.apache.hadoop.hive.accumulo.mr.TestHiveAccumuloTableInputFormat.java

private byte[] parseLongBytes(String s) throws IOException {
    long val = Long.parseLong(s);
    ByteArrayOutputStream baos = new ByteArrayOutputStream(8);
    DataOutputStream out = new DataOutputStream(baos);
    out.writeLong(val);
    out.close();//from  w w  w  .j  a v a  2 s . c om
    return baos.toByteArray();
}

From source file:bobs.is.compress.sevenzip.SevenZOutputFile.java

/**
 * Finishes the addition of entries to this archive, without closing it.
 * //from  w  w w.ja v  a2 s. c o m
 * @throws IOException if archive is already closed.
 */
public void finish() throws IOException {
    if (finished) {
        throw new IOException("This archive has already been finished");
    }
    finished = true;

    final long headerPosition = file.getFilePointer();

    final ByteArrayOutputStream headerBaos = new ByteArrayOutputStream();
    final DataOutputStream header = new DataOutputStream(headerBaos);

    writeHeader(header);
    header.flush();
    final byte[] headerBytes = headerBaos.toByteArray();
    file.write(headerBytes);

    final CRC32 crc32 = new CRC32();

    // signature header
    file.seek(0);
    file.write(SevenZFile.sevenZSignature);
    // version
    file.write(0);
    file.write(2);

    // start header
    final ByteArrayOutputStream startHeaderBaos = new ByteArrayOutputStream();
    final DataOutputStream startHeaderStream = new DataOutputStream(startHeaderBaos);
    startHeaderStream.writeLong(Long.reverseBytes(headerPosition - SevenZFile.SIGNATURE_HEADER_SIZE));
    startHeaderStream.writeLong(Long.reverseBytes(0xffffFFFFL & headerBytes.length));
    crc32.reset();
    crc32.update(headerBytes);
    startHeaderStream.writeInt(Integer.reverseBytes((int) crc32.getValue()));
    startHeaderStream.flush();
    final byte[] startHeaderBytes = startHeaderBaos.toByteArray();
    crc32.reset();
    crc32.update(startHeaderBytes);
    file.writeInt(Integer.reverseBytes((int) crc32.getValue()));
    file.write(startHeaderBytes);
}