Examples with Adler32 java.util.zip.Adler32 used on opensource projects

Example 31 with Adler32

use of java.util.zip.Adler32 in project robovm by robovm.

the class InflaterTest method adler32.

private static int adler32(byte[] bytes) {
    Adler32 adler32 = new Adler32();
    adler32.update(bytes);
    return (int) adler32.getValue();
}

Example 32 with Adler32

use of java.util.zip.Adler32 in project robovm by robovm.

the class OldAndroidChecksumTest method wrongChecksumWithAdler32Test.

// Test for issue 1016037
private void wrongChecksumWithAdler32Test() {
    byte[] bytes = { 1, 0, 5, 0, 15, 0, 1, 11, 0, 1 };
    Adler32 adler = new Adler32();
    adler.update(bytes);
    long arrayChecksum = adler.getValue();
    adler.reset();
    for (int i = 0; i < bytes.length; i++) {
        adler.update(bytes[i]);
    }
    assertEquals("Checksums not equal: expected: " + arrayChecksum + " actual: " + adler.getValue(), arrayChecksum, adler.getValue());
}

Example 33 with Adler32

use of java.util.zip.Adler32 in project robovm by robovm.

the class OldAndroidChecksumTest method adler32Test.

private void adler32Test(byte[] values, long expected) {
    Adler32 adler = new Adler32();
    // try it all at once
    adler.update(values);
    assertEquals(adler.getValue(), expected);
    // try resetting and computing one byte at a time
    adler.reset();
    for (int i = 0; i < values.length; i++) {
        adler.update(values[i]);
    }
    assertEquals(adler.getValue(), expected);
}

Example 34 with Adler32

use of java.util.zip.Adler32 in project voltdb by VoltDB.

the class LogFormatter method main.

/**
     * @param args
     */
public static void main(String[] args) throws Exception {
    if (args.length != 1) {
        System.err.println("USAGE: LogFormatter log_file");
        System.exit(2);
    }
    FileInputStream fis = new FileInputStream(args[0]);
    BinaryInputArchive logStream = BinaryInputArchive.getArchive(fis);
    FileHeader fhdr = new FileHeader();
    fhdr.deserialize(logStream, "fileheader");
    if (fhdr.getMagic() != FileTxnLog.TXNLOG_MAGIC) {
        System.err.println("Invalid magic number for " + args[0]);
        System.exit(2);
    }
    System.out.println("ZooKeeper Transactional Log File with dbid " + fhdr.getDbid() + " txnlog format version " + fhdr.getVersion());
    int count = 0;
    while (true) {
        long crcValue;
        byte[] bytes;
        try {
            crcValue = logStream.readLong("crcvalue");
            bytes = logStream.readBuffer("txnEntry");
        } catch (EOFException e) {
            System.out.println("EOF reached after " + count + " txns.");
            return;
        }
        if (bytes.length == 0) {
            // Since we preallocate, we define EOF to be an
            // empty transaction
            System.out.println("EOF reached after " + count + " txns.");
            return;
        }
        Checksum crc = new Adler32();
        crc.update(bytes, 0, bytes.length);
        if (crcValue != crc.getValue()) {
            throw new IOException("CRC doesn't match " + crcValue + " vs " + crc.getValue());
        }
        InputArchive iab = BinaryInputArchive.getArchive(new ByteArrayInputStream(bytes));
        TxnHeader hdr = new TxnHeader();
        SerializeUtils.deserializeTxn(iab, hdr);
        System.out.println(DateFormat.getDateTimeInstance(DateFormat.SHORT, DateFormat.LONG).format(new Date(hdr.getTime())) + " session 0x" + Long.toHexString(hdr.getClientId()) + " cxid 0x" + Long.toHexString(hdr.getCxid()) + " zxid 0x" + Long.toHexString(hdr.getZxid()) + " " + TraceFormatter.op2String(hdr.getType()));
        if (logStream.readByte("EOR") != 'B') {
            LOG.error("Last transaction was partial.");
            throw new EOFException("Last transaction was partial.");
        }
        count++;
    }
}

Example 35 with Adler32

use of java.util.zip.Adler32 in project voltdb by VoltDB.

the class FileSnap method deserialize.

/**
     * deserialize a data tree from the most recent snapshot
     * @return the zxid of the snapshot
     */
@Override
public long deserialize(DataTree dt, Map<Long, Long> sessions) throws IOException {
    // we run through 100 snapshots (not all of them)
    // if we cannot get it running within 100 snapshots
    // we should  give up
    List<File> snapList = findNValidSnapshots(100);
    if (snapList.size() == 0) {
        return -1L;
    }
    File snap = null;
    boolean foundValid = false;
    for (int i = 0; i < snapList.size(); i++) {
        snap = snapList.get(i);
        InputStream snapIS = null;
        CheckedInputStream crcIn = null;
        try {
            LOG.info("Reading snapshot " + snap);
            snapIS = new BufferedInputStream(new FileInputStream(snap));
            crcIn = new CheckedInputStream(snapIS, new Adler32());
            InputArchive ia = BinaryInputArchive.getArchive(crcIn);
            deserialize(dt, sessions, ia);
            long checkSum = crcIn.getChecksum().getValue();
            long val = ia.readLong("val");
            if (val != checkSum) {
                throw new IOException("CRC corruption in snapshot :  " + snap);
            }
            foundValid = true;
            break;
        } catch (IOException e) {
            LOG.warn("problem reading snap file " + snap, e);
        } finally {
            if (snapIS != null)
                snapIS.close();
            if (crcIn != null)
                crcIn.close();
        }
    }
    if (!foundValid) {
        throw new IOException("Not able to find valid snapshots in " + snapDir);
    }
    dt.lastProcessedZxid = Util.getZxidFromName(snap.getName(), "snapshot");
    return dt.lastProcessedZxid;
}