Example usage for com.google.common.primitives Longs fromByteArray

Introduction

In this page you can find the example usage for com.google.common.primitives Longs fromByteArray.

Prototype

public static long fromByteArray(byte[] bytes) 

Source Link

Document

Returns the long value whose big-endian representation is stored in the first 8 bytes of bytes ; equivalent to ByteBuffer.wrap(bytes).getLong() .

Usage

From source file:co.paralleluniverse.galaxy.berkeleydb.BerkeleyDB.java

@Override
public void removeOwner(short node) {
    final boolean trace = LOG.isTraceEnabled();
    final Transaction txn = null;
    //        final Transaction txn = env.beginTransaction(null, TransactionConfig.DEFAULT);
    //        try {
    final LongArrayList lines = new LongArrayList();

    final DatabaseEntry sKey = new DatabaseEntry(Shorts.toByteArray(node));
    final DatabaseEntry pKey = new DatabaseEntry();
    final DatabaseEntry data = new DatabaseEntry();

    try (SecondaryCursor cursor = ownerIndex.openCursor(txn, null)) {
        OperationStatus retVal = cursor.getSearchKey(sKey, pKey, data, LockMode.DEFAULT);
        while (retVal == OperationStatus.SUCCESS) {
            final long id = Longs.fromByteArray(pKey.getData());
            if (trace)
                LOG.trace("Owner of {}: {} -> 0", id, node);

            lines.add(id); // cursor.getPrimaryDatabase().put(null, pKey, SERVER); - causes deadlock
            retVal = cursor.getNextDup(sKey, pKey, data, LockMode.DEFAULT);
        }/*from w  w  w.ja va  2  s  . c  om*/
    }

    byte[] longArray = new byte[8];
    for (LongIterator it = lines.iterator(); it.hasNext();) {
        toByteArray(it.next(), longArray);
        pKey.setData(longArray);
        ownerDirectory.put(null, pKey, SERVER);
    }
    //            txn.commit();
    //        } catch (Exception e) {
    //            LOG.error("Exception while removing. Aborting.", e);
    //            txn.abort();
    //            throw Throwables.propagate(e);
    //        }
}

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From source file:io.opencensus.exporter.trace.jaeger.JaegerExporterHandler.java

private long spanIdToLong(final @Nullable SpanId spanId) {
    if (spanId == null) {
        return 0L;
    }/*from   w  w  w  . j  a  v  a  2  s  . co  m*/
    // Attempt to minimise allocations, since SpanId#getBytes currently creates a defensive copy:
    spanId.copyBytesTo(spanIdBuffer, 0);
    return Longs.fromByteArray(spanIdBuffer);
}

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From source file:se.sics.datamodel.util.DMKeyFactory.java

private static Long deserializeLexicoLong(DataInputStream r) throws IOException {
    byte b_sign = r.readByte();
    byte[] b_long = new byte[8];
    r.read(b_long);
    Long val = Longs.fromByteArray(b_long);
    if (b_sign == (byte) 0) { //negative
        val = val * (-1);
    }//from  w  w  w.  j  a  v  a2  s.  c om
    return val;
}

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From source file:com.liaison.javabasics.serialization.BytesUtil.java

/**
 * TODO//w  ww  .ja v  a  2s . c  om
 * @param bytes TODO
 * @return TODO
 */
public static Instant toInstant(final byte[] bytes) {
    // TODO: determine constant values programmatically, or make them constant
    if (bytes != null && bytes.length >= 8 + 4) {
        long millisecs = Longs.fromByteArray(bytes);
        int nano = Ints.fromBytes(bytes[8], bytes[9], bytes[10], bytes[11]);
        return Instant.ofEpochSecond(millisecs, nano);
    }
    return null;
}

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From source file:co.paralleluniverse.galaxy.berkeleydb.BerkeleyDB.java

public void resetOwners() {
    final boolean trace = LOG.isTraceEnabled();

    final DatabaseEntry key = new DatabaseEntry();
    final DatabaseEntry data = new DatabaseEntry();

    try (DiskOrderedCursor cursor = ownerDirectory
            .openCursor(new DiskOrderedCursorConfig().setKeysOnly(true))) {
        OperationStatus retVal = cursor.getNext(key, data, null);
        while (retVal == OperationStatus.SUCCESS) {
            if (trace)
                LOG.trace("Owner of {} -> 0", Longs.fromByteArray(key.getData()));

            ownerDirectory.put(null, key, SERVER);
            retVal = cursor.getNext(key, data, null);
        }//from w  ww  . j av a 2  s . com
    }
}

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From source file:org.opendedup.collections.LongByteArrayMap.java

@Override
public SparseDataChunk nextValue(boolean index) throws IOException, FileClosedException {
    ReadLock l = this.hashlock.readLock();
    l.lock();//from   www .  j av a 2  s.  c o  m
    try {
        if (this.isClosed()) {
            throw new FileClosedException("hashtable [" + this.filePath + "] is close");
        }
        long _cpos = getInternalIterFPos();
        while (_cpos < pbdb.size()) {
            try {
                if (nbuf == null) {
                    nbuf = ByteBuffer.allocate(arrayLength);
                }
                nbuf.position(0);
                pbdb.read(nbuf, _cpos);
                // SDFSLogger.getLog().info("al=" + al + " cpos=" +_cpos
                // + " flen=" + flen + " fz=" +pbdb.size() + " nbfs=" +
                // nbuf.position());
                nbuf.position(0);
                // SDFSLogger.getLog().info("arl=" + arrayLength + "
                // nbufsz=" + nbuf.capacity() + " rem="+ nbuf.remaining());
                byte[] val = new byte[arrayLength];
                nbuf.get(val);
                if (!Arrays.equals(val, FREE)) {
                    SparseDataChunk ck = new SparseDataChunk(val, this.version);
                    if (index) {
                        for (HashLocPair p : ck.getFingers()) {
                            DedupFileStore.addRef(p.hash, Longs.fromByteArray(p.hashloc));
                        }
                    }
                    return ck;
                }
            } finally {
                iterPos.incrementAndGet();
                _cpos = (iterPos.get() * arrayLength) + this.offset;
            }
        }
        return null;

    } finally {
        l.unlock();
    }

}

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From source file:org.opendedup.collections.LongByteArrayMap.java

public LongKeyValue nextKeyValue(boolean index) throws IOException, FileClosedException {
    ReadLock l = this.hashlock.readLock();
    l.lock();//w ww. j  a va  2 s .  c o  m
    try {
        if (this.isClosed()) {
            throw new FileClosedException("hashtable [" + this.filePath + "] is close");
        }
        long _cpos = getInternalIterFPos();
        while (_cpos < pbdb.size()) {
            try {
                ByteBuffer buf = ByteBuffer.wrap(new byte[arrayLength]);
                pbdb.read(buf, _cpos);
                byte[] val = buf.array();
                if (!Arrays.equals(val, FREE)) {
                    SparseDataChunk ck = new SparseDataChunk(val, this.version);
                    if (index) {
                        for (HashLocPair p : ck.getFingers()) {
                            DedupFileStore.addRef(p.hash, Longs.fromByteArray(p.hashloc));
                        }
                    }
                    return new LongKeyValue(iterPos.get() * Main.CHUNK_LENGTH, ck);
                }
            } finally {
                iterPos.incrementAndGet();
                _cpos = (iterPos.get() * arrayLength) + this.offset;
            }
        }
        return null;
    } finally {
        l.unlock();
    }

}

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From source file:org.apache.apex.malhar.lib.wal.FSWindowDataManager.java

private long findLargestCompletedWindow(FSWindowReplayWAL wal, Long ceilingWindow) throws IOException {
    if (!wal.fileDescriptors.isEmpty()) {
        FileSystemWAL.FileSystemWALReader reader = wal.getReader();

        //to find the largest window, we only need to look at the last file.
        NavigableSet<Integer> descendingParts = new TreeSet<>(wal.fileDescriptors.keySet()).descendingSet();
        for (int part : descendingParts) {
            FSWindowReplayWAL.FileDescriptor last = wal.fileDescriptors.get(part).last();
            reader.seek(new FileSystemWAL.FileSystemWALPointer(last.part, 0));

            long endOffset = -1;

            long lastWindow = Stateless.WINDOW_ID;
            Slice slice = readNext(reader);

            while (slice != null) {
                boolean skipComplete = skipNext(reader); //skip the artifact because we need just the largest window id.
                if (!skipComplete) {
                    //artifact not saved so this window was not finished.
                    break;
                }//w w  w  . java  2s . c  om
                long offset = reader.getCurrentPointer().getOffset();

                long window = Longs.fromByteArray(slice.toByteArray());
                if (ceilingWindow != null && window > ceilingWindow) {
                    break;
                }
                endOffset = offset;
                lastWindow = window;
                slice = readNext(reader); //either null or next window
            }

            if (endOffset != -1) {
                wal.walEndPointerAfterRecovery = new FileSystemWAL.FileSystemWALPointer(last.part, endOffset);
                wal.windowWalParts.put(lastWindow, wal.walEndPointerAfterRecovery.getPartNum());
                return lastWindow;
            }
        }
    }
    return Stateless.WINDOW_ID;
}

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From source file:org.opendaylight.openflowplugin.extension.vendor.nicira.convertor.match.MatchUtil.java

public static Long ipv4ToLong(Ipv4Address ipv4) {
    Iterator<String> iterator = SPLITTER.split(ipv4.getValue()).iterator();
    byte[] bytes = new byte[8];
    for (int i = 0; i < bytes.length; i++) {
        if (i < 4) {
            bytes[i] = 0;/*ww  w  .  jav a2 s .  c om*/
        } else {
            bytes[i] = UnsignedBytes.parseUnsignedByte((iterator.next()));
        }
    }
    Long result = Longs.fromByteArray(bytes);
    return result;
}

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From source file:co.paralleluniverse.galaxy.berkeleydb.BerkeleyDB.java

private long getMaxId(Database db) {
    final DatabaseEntry key = new DatabaseEntry();
    final DatabaseEntry value = new DatabaseEntry();
    try (Cursor cursor = db.openCursor(null, CursorConfig.DEFAULT)) {
        final OperationStatus status = cursor.getLast(key, value, null);
        if (status == OperationStatus.SUCCESS)
            return Longs.fromByteArray(key.getData());
        else// w  w  w.j  ava2s  .  c  om
            return 0;
    }
}

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