Package java.util.zip

Examples of java.util.zip.CheckedInputStream

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        if (file.isDirectory()) {
            throw new IllegalArgumentException("Checksums can't be computed on directories");
        }
        InputStream in = null;
        try {
            in = new CheckedInputStream(new FileInputStream(file), checksum);
            IOUtils.copy(in, new NullOutputStream());
        } finally {
            IOUtils.closeQuietly(in);
        }
        return checksum;
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        try {
            if (file.canRead()) {
                 checksum.reset();
                 FileInputStream fis = new FileInputStream(file);
                 CheckedInputStream check = new CheckedInputStream(fis, checksum);
                 BufferedInputStream in = new BufferedInputStream(check);
                 while (in.read() != -1) {
                     // Read the file
                 }
                 rval = Long.toString(check.getChecksum().getValue());
                 in.close();
            }
        } catch (Exception e) {
            rval = null;
        }
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      final int size = partitions * MAP_OUTPUT_INDEX_RECORD_LENGTH;

      buf = ByteBuffer.allocate(size);
      if (crc != null) {
        crc.reset();
        CheckedInputStream chk = new CheckedInputStream(in, crc);
        IOUtils.readFully(chk, buf.array(), 0, size);
        if (chk.getChecksum().getValue() != in.readLong()) {
          throw new ChecksumException("Checksum error reading spill index: " +
                                indexFileName, -1);
        }
      } else {
        IOUtils.readFully(in, buf.array(), 0, size);
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      final int size = partitions * Constants.MAP_OUTPUT_INDEX_RECORD_LENGTH;

      buf = ByteBuffer.allocate(size);
      if (crc != null) {
        crc.reset();
        CheckedInputStream chk = new CheckedInputStream(in, crc);
        IOUtils.readFully(chk, buf.array(), 0, size);
        if (chk.getChecksum().getValue() != in.readLong()) {
          throw new ChecksumException("Checksum error reading spill index: " +
                                indexFileName, -1);
        }
      } else {
        IOUtils.readFully(in, buf.array(), 0, size);
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        this.checksum = null;
      }

      if (this.checksum != null) {
        this.in = new DataInputStream(
            new CheckedInputStream(in, this.checksum));
      } else {
        this.in = in;
      }
      this.limiter = limiter;
      this.cache = new OpInstanceCache();
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    private boolean getCheckSum(FileSnap snap, File snapFile) throws IOException {
        DataTree dt = new DataTree();
        Map<Long, Integer> sessions = new ConcurrentHashMap<Long, Integer>();
        InputStream snapIS = new BufferedInputStream(new FileInputStream(
                snapFile));
        CheckedInputStream crcIn = new CheckedInputStream(snapIS, new Adler32());
        InputArchive ia = BinaryInputArchive.getArchive(crcIn);
        try {
            snap.deserialize(dt, sessions, ia);
        } catch (IOException ie) {
            // we failed on the most recent snapshot
            // must be incomplete
            // try reading the next one
            // after corrupting
            snapIS.close();
            crcIn.close();
            throw ie;
        }

        long checksum = crcIn.getChecksum().getValue();
        long val = ia.readLong("val");
        snapIS.close();
        crcIn.close();
        return (val != checksum);
    }
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        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);
        }
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        this.checksum = null;
      }

      if (this.checksum != null) {
        this.in = new DataInputStream(
            new CheckedInputStream(in, this.checksum));
      } else {
        this.in = in;
      }
      this.cache = new OpInstanceCache();
    }
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*/
public class MultiFileChecksumHelper
{
    public static long getChecksum(File[] files)
    {
        CheckedInputStream cis = null;
        FileInputStream is = null;
        Checksum checksum = new Adler32();
        byte[] tempBuf = new byte[128];
       
        for ( int i = 0; i < files.length && files[i] != null && files[i].exists() && files[i].isFile(); i++ )
        {
            try
            {
                is = new FileInputStream(files[i]);
                cis = new CheckedInputStream(is, checksum);
                while (cis.read(tempBuf) >= 0) {}               
            }
            catch (Exception e)
            {
                throw new RuntimeException(e);
            }
            finally
            {
                if (cis != null)
                {
                    try
                    {
                        cis.close();
                    }
                    catch (IOException ioe) {}
                    cis = null;
                }
                if (is != null)
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*/
public final class ChecksumHelper
{
    public static long getChecksum(InputStream is)
    {
        CheckedInputStream cis = null;       
        long checksum = 0;
        try
        {
            cis = new CheckedInputStream(is, new Adler32());
            byte[] tempBuf = new byte[128];
            while (cis.read(tempBuf) >= 0)
            {
            }
            checksum = cis.getChecksum().getValue();
        }
        catch (IOException e)
        {
            checksum = 0;
        }
        finally
        {
            if (cis != null)
            {
                try
                {
                    cis.close();
                }
                catch (IOException ioe)
                {                   
                }
            }
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