Package java.util.zip

Examples of java.util.zip.CRC32.update()

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            for (Map.Entry<Integer, Integer> entry : clHeader.cfDirtiedAt.entrySet())
            {
                dos.writeInt(entry.getKey()); // 4
                checksum.update(entry.getKey());
                dos.writeInt(entry.getValue()); // 4
                checksum.update(entry.getValue());
            }
            dos.writeLong(checksum.getValue());
        }

        public CommitLogHeader deserialize(DataInput dis) throws IOException
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        public CommitLogHeader deserialize(DataInput dis) throws IOException
        {
            Checksum checksum = new CRC32();

            int lastFlushedAtSize = dis.readInt();
            checksum.update(lastFlushedAtSize);
            if (checksum.getValue() != dis.readLong())
            {
                throw new IOException("Invalid or corrupt commitlog header");
            }
            Map<Integer, Integer> lastFlushedAt = new HashMap<Integer, Integer>();
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            }
            Map<Integer, Integer> lastFlushedAt = new HashMap<Integer, Integer>();
            for (int i = 0; i < lastFlushedAtSize; i++)
            {
                int key = dis.readInt();
                checksum.update(key);
                int value = dis.readInt();
                checksum.update(value);
                lastFlushedAt.put(key, value);
            }
            if (checksum.getValue() != dis.readLong())
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            for (int i = 0; i < lastFlushedAtSize; i++)
            {
                int key = dis.readInt();
                checksum.update(key);
                int value = dis.readInt();
                checksum.update(value);
                lastFlushedAt.put(key, value);
            }
            if (checksum.getValue() != dis.readLong())
            {
                throw new IOException("Invalid or corrupt commitlog header");
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    @Test
    public void testRecoveryWithBadSizeChecksum() throws Exception
    {
        Checksum checksum = new CRC32();
        checksum.update(100);
        testRecoveryWithBadSizeArgument(100, 100, ~checksum.getValue());
    }
   
    @Test
    public void testRecoveryWithZeroSegmentSizeArgument() throws Exception
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        DataOutputStream dos = new DataOutputStream(out);
        Checksum checksum = new CRC32();

        // write the first checksum after the fixed-size part, so we won't read garbage lastFlushedAt data.
        dos.writeInt(1);
        checksum.update(1);
        dos.writeLong(checksum.getValue());
        dos.writeInt(0);
        checksum.update(0);
        dos.writeInt(200);
        checksum.update(200);
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        // write the first checksum after the fixed-size part, so we won't read garbage lastFlushedAt data.
        dos.writeInt(1);
        checksum.update(1);
        dos.writeLong(checksum.getValue());
        dos.writeInt(0);
        checksum.update(0);
        dos.writeInt(200);
        checksum.update(200);
        dos.writeLong(checksum.getValue());
        dos.close();
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        checksum.update(1);
        dos.writeLong(checksum.getValue());
        dos.writeInt(0);
        checksum.update(0);
        dos.writeInt(200);
        checksum.update(200);
        dos.writeLong(checksum.getValue());
        dos.close();

        testRecovery(out.toByteArray(), new byte[0]);
    }
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    }

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

    protected void testRecoveryWithBadSizeArgument(int size, int dataSize, long checksum) throws Exception
    {
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      }

      // The identifier is not unique because we omitted part, so add a
      // checksum as a hashcode.
      CRC32 crc32 = new CRC32();
      crc32.update(s.getBytes());
      long hash = crc32.getValue() & unitTestHashReductionMask;
      sb.append('_');
      sb.append(Long.toHexString(hash));
      String encoded = sb.toString();
      if (!usedHashedAliases.add(encoded)) {
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