Examples of java.util.zip.Checksum

java.util.zip.Checksum
An interface representing a data checksum. @version 1.17, 11/17/05 @author David Connelly

          FileChannel channel = inputStream.getChannel();
          //if offset is mentioned move the pointer to that point
          if (offset != -1)
            channel.position(offset);
          byte[] buf = new byte[(len == -1 || len > PACKET_SZ) ? PACKET_SZ : len];
          Checksum checksum = null;
          if (useChecksum)
            checksum = new Adler32();
          ByteBuffer bb = ByteBuffer.wrap(buf);


          while (true) {
            bb.clear();
            long bytesRead = channel.read(bb);
            if (bytesRead <= 0) {
              writeNothing();
              fos.close();
              break;
            }
            fos.writeInt((int) bytesRead);
            if (useChecksum) {
              checksum.reset();
              checksum.update(buf, 0, (int) bytesRead);
              fos.writeLong(checksum.getValue());
            }
            fos.write(buf, 0, (int) bytesRead);
            fos.flush();
            if (indexVersion != null && (packetsWritten % 5 == 0)) {
              //after every 5 packets reserve the commitpoint for some time

View Full Code Here

    }


    @Test
    public void testRecoveryWithBadSizeChecksum() throws Exception
    {
        Checksum checksum = new CRC32();
        checksum.update(100);
        testRecoveryWithBadSizeArgument(100, 100, ~checksum.getValue());
    }

View Full Code Here

        }
    }


    protected void testRecoveryWithBadSizeArgument(int size, int dataSize) throws Exception
    {
        Checksum checksum = new CRC32();
        checksum.update(size);
        testRecoveryWithBadSizeArgument(size, dataSize, checksum.getValue());
    }

View Full Code Here

                    }
                    else
                    {
                        // TODO: custom LZ4 OS that supports BB write methods
                        LZ4Compressor compressor = LZ4Factory.fastestInstance().fastCompressor();
                        Checksum checksum = XXHashFactory.fastestInstance().newStreamingHash32(LZ4_HASH_SEED).asChecksum();
                        out = new DataOutputStreamPlus(new LZ4BlockOutputStream(socket.getOutputStream(),
                                                                            1 << 14,  // 16k block size
                                                                            compressor,
                                                                            checksum,
                                                                            true)); // no async flushing

View Full Code Here

            byte[] buf = Util.marshallTxnEntry(hdr, txn);
            if (buf == null || buf.length == 0) {
                throw new IOException("Faulty serialization for header " +
                        "and txn");
            }
            Checksum crc = makeChecksumAlgorithm();
            crc.update(buf, 0, buf.length);
            oa.writeLong(crc.getValue(), "txnEntryCRC");
            Util.writeTxnBytes(oa, buf);
            
            return true;
        }
        return false;

View Full Code Here

                // Since we preallocate, we define EOF to be an
                if (bytes == null || bytes.length==0)
                   throw new EOFException("Failed to read");
                // EOF or corrupted record
                // validate CRC
                Checksum crc = makeChecksumAlgorithm();
                crc.update(bytes, 0, bytes.length);
                if (crcValue != crc.getValue())
                    throw new IOException(CRC_ERROR);
                if (bytes == null || bytes.length == 0)
                    return false;
                InputArchive iab = BinaryInputArchive
                                    .getArchive(new ByteArrayInputStream(bytes));

View Full Code Here

  }
  
  protected String getChecksum(String s) {
    byte[] bytes = s.getBytes();
     
      Checksum checksumEngine = new CRC32();
      checksumEngine.update(bytes, 0, bytes.length);
      long checksum = checksumEngine.getValue();
      return Long.toHexString(checksum);


  }

View Full Code Here


  /**
   * Gets the checksum of a file
   */
  private void getFileChecksum(SolrParams solrParams, SolrQueryResponse rsp) {
    Checksum checksum = new Adler32();
    File dir = new File(core.getIndexDir());
    rsp.add(CHECKSUM, getCheckSums(solrParams.getParams(FILE), dir, checksum));
    dir = new File(core.getResourceLoader().getConfigDir());
    rsp.add(CONF_CHECKSUM, getCheckSums(solrParams.getParams(CONF_FILE_SHORT), dir, checksum));
  }

View Full Code Here

  List<Map<String, Object>> getConfFileInfoFromCache(NamedList<String> nameAndAlias,
                                                     final Map<String, FileInfo> confFileInfoCache) {
    List<Map<String, Object>> confFiles = new ArrayList<Map<String, Object>>();
    synchronized (confFileInfoCache) {
      File confDir = new File(core.getResourceLoader().getConfigDir());
      Checksum checksum = null;
      for (int i = 0; i < nameAndAlias.size(); i++) {
        String cf = nameAndAlias.getName(i);
        File f = new File(confDir, cf);
        if (!f.exists() || f.isDirectory()) continue; //must not happen
        FileInfo info = confFileInfoCache.get(cf);

View Full Code Here

          FileChannel channel = inputStream.getChannel();
          //if offset is mentioned move the pointer to that point
          if (offset != -1)
            channel.position(offset);
          byte[] buf = new byte[(len == -1 || len > PACKET_SZ) ? PACKET_SZ : len];
          Checksum checksum = null;
          if (useChecksum)
            checksum = new Adler32();
          ByteBuffer bb = ByteBuffer.wrap(buf);


          while (true) {
            bb.clear();
            long bytesRead = channel.read(bb);
            if (bytesRead <= 0) {
              writeNothing();
              fos.close();
              break;
            }
            fos.writeInt((int) bytesRead);
            if (useChecksum) {
              checksum.reset();
              checksum.update(buf, 0, (int) bytesRead);
              fos.writeLong(checksum.getValue());
            }
            fos.write(buf, 0, (int) bytesRead);
            fos.flush();
            if (indexVersion != null && (packetsWritten % 5 == 0)) {
              //after every 5 packets reserve the commitpoint for some time

View Full Code Here

0 1 2 3 4 5 6 7 8 9

TOP

Related Classes of java.util.zip.Checksum

com.asakusafw.runtime.util.cache.HadoopFileCacheRepository

com.flaptor.util.FileUtil

com.google.clearsilver.jsilver.functions.string.CrcFunction

com.ipc.oce.xml.xerces.Utils

com.linkedin.helix.tools.ZKLogFormatter

com.netflix.exhibitor.core.index.ZooKeeperLogParser

com.sleepycat.je.log.FileManager

com.sleepycat.je.log.LogEntryHeader

com.sleepycat.je.log.LogManager

com.sleepycat.je.util.Adler32Test

All source code are property of their respective owners. Java is a trademark of Sun Microsystems, Inc and owned by ORACLE Inc. Contact coftware#gmail.com.