Package org.apache.cassandra.io.util

Examples of org.apache.cassandra.io.util.DataOutputBuffer

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        public SSTableReader write(Map<String, ColumnFamily> entries) throws IOException
        {
            Map<ByteBuffer, ByteBuffer> map = new HashMap<ByteBuffer, ByteBuffer>();
            for (Map.Entry<String, ColumnFamily> entry : entries.entrySet())
            {
                DataOutputBuffer buffer = new DataOutputBuffer();
                ColumnFamily.serializer().serializeWithIndexes(entry.getValue(), buffer);
                map.put(ByteBufferUtil.bytes(entry.getKey()), ByteBuffer.wrap(buffer.asByteArray()));
            }
            return writeRaw(map);
        }
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        cf.addColumn(new Column(ByteBufferUtil.bytes("birthdate"), ByteBufferUtil.bytes(1L), 0));
        cf.addColumn(new Column(ByteBufferUtil.bytes("anydate"), ByteBufferUtil.bytes(1L), 0));
       
        Map<ByteBuffer, ByteBuffer> entries = new HashMap<ByteBuffer, ByteBuffer>();
       
        DataOutputBuffer buffer = new DataOutputBuffer();
        ColumnFamily.serializer().serializeWithIndexes(cf, buffer);
        entries.put(ByteBufferUtil.bytes("k2"), ByteBuffer.wrap(Arrays.copyOf(buffer.getData(), buffer.getLength())));       
        cf.clear();
       
        cf.addColumn(new Column(ByteBufferUtil.bytes("anydate"), ByteBufferUtil.bytes(1L), 0));
        buffer = new DataOutputBuffer();
        ColumnFamily.serializer().serializeWithIndexes(cf, buffer);              
        entries.put(ByteBufferUtil.bytes("k3"), ByteBuffer.wrap(Arrays.copyOf(buffer.getData(), buffer.getLength())));
       
        SSTableReader orig = SSTableUtils.prepare().cf("Indexed1").writeRaw(entries);       
        // whack the index to trigger the recover
        FileUtils.deleteWithConfirm(orig.descriptor.filenameFor(Component.PRIMARY_INDEX));
        FileUtils.deleteWithConfirm(orig.descriptor.filenameFor(Component.FILTER));
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                break;
            }

            AbstractCompactedRow row1 = iter1.next();
            AbstractCompactedRow row2 = iter2.next();
            DataOutputBuffer out1 = new DataOutputBuffer();
            DataOutputBuffer out2 = new DataOutputBuffer();
            row1.write(out1);
            row2.write(out2);

            File tmpFile1 = File.createTempFile("lcrt1", null);
            File tmpFile2 = File.createTempFile("lcrt2", null);

            tmpFile1.deleteOnExit();
            tmpFile2.deleteOnExit();

            new FileOutputStream(tmpFile1).write(out1.getData()); // writing data from row1
            new FileOutputStream(tmpFile2).write(out2.getData()); // writing data from row2

            MappedFileDataInput in1 = new MappedFileDataInput(new FileInputStream(tmpFile1), tmpFile1.getAbsolutePath(), 0, 0);
            MappedFileDataInput in2 = new MappedFileDataInput(new FileInputStream(tmpFile2), tmpFile2.getAbsolutePath(), 0, 0);

            // key isn't part of what CompactedRow writes, that's done by SSTW.append

            // row size can differ b/c of bloom filter counts being different
            long rowSize1 = SSTableReader.readRowSize(in1, sstables.iterator().next().descriptor);
            long rowSize2 = SSTableReader.readRowSize(in2, sstables.iterator().next().descriptor);
            assertEquals(rowSize1 + 8, out1.getLength());
            assertEquals(rowSize2 + 8, out2.getLength());

            // cf metadata
            ColumnFamily cf1 = ColumnFamily.create(cfs.metadata);
            ColumnFamily cf2 = ColumnFamily.create(cfs.metadata);
            cf1.delete(DeletionInfo.serializer().deserializeFromSSTable(in1, Descriptor.Version.CURRENT));
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        ByteBuffer key = ByteBuffer.wrap("k".getBytes());
        RowMutation rm = new RowMutation("Keyspace1", key);
        for (int i = 0; i < 1000; i++)
            rm.add(new QueryPath("Standard1", null, ByteBufferUtil.bytes(i)), ByteBufferUtil.EMPTY_BYTE_BUFFER, 0);
        rm.apply();
        DataOutputBuffer out = new DataOutputBuffer();
        RowMutation.serializer.serialize(rm, out, MessagingService.current_version);
        assert out.getLength() > DatabaseDescriptor.getColumnIndexSize();
        cfs.forceBlockingFlush();

        assertBytes(cfs, Integer.MAX_VALUE);
        assertDigest(cfs, Integer.MAX_VALUE);
    }
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    }

    public static Message createMessage(String keyspace, byte[] key, String columnFamily, List<ColumnFamily> columnFamilies)
    {
        ColumnFamily baseColumnFamily;
        DataOutputBuffer bufOut = new DataOutputBuffer();
        RowMutation rm;
        Message message;
        Column column;

        /* Get the first column family from list, this is just to get past validation */
        baseColumnFamily = new ColumnFamily(ColumnFamilyType.Standard,
                                            DatabaseDescriptor.getComparator(keyspace, columnFamily),
                                            DatabaseDescriptor.getSubComparator(keyspace, columnFamily),
                                            CFMetaData.getId(keyspace, columnFamily));
       
        for(ColumnFamily cf : columnFamilies) {
            bufOut.reset();
            ColumnFamily.serializer().serializeWithIndexes(cf, bufOut);
            byte[] data = new byte[bufOut.getLength()];
            System.arraycopy(bufOut.getData(), 0, data, 0, bufOut.getLength());

            column = new Column(FBUtilities.toByteBuffer(cf.id()), ByteBuffer.wrap(data), 0);
            baseColumnFamily.addColumn(column);
        }
        rm = new RowMutation(keyspace, ByteBuffer.wrap(key));
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                emptyColumnFamily.delete(cf);
        }
        this.shouldPurge = major || !cfStore.isKeyInRemainingSSTables(key, sstables);

        // initialize row header so isEmpty can be called
        headerBuffer = new DataOutputBuffer();
        ColumnIndexer.serialize(this, headerBuffer);
        // reach into iterator used by ColumnIndexer to get column count and size
        columnCount = iter.size;
        columnSerializedSize = iter.serializedSize;
        iter = null;
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            out.writeLong(row.dataSize);
            row.echoData(out);
            return;
        }

        DataOutputBuffer clockOut = new DataOutputBuffer();
        ColumnFamily.serializer().serializeCFInfo(emptyColumnFamily, clockOut);

        long dataSize = headerBuffer.getLength() + clockOut.getLength() + columnSerializedSize;
        assert dataSize > 0;
        out.writeLong(dataSize);
        out.write(headerBuffer.getData(), 0, headerBuffer.getLength());
        out.write(clockOut.getData(), 0, clockOut.getLength());
        out.writeInt(columnCount);

        Iterator<IColumn> iter = iterator();
        while (iter.hasNext())
        {
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    public void update(MessageDigest digest)
    {
        // no special-case for rows.size == 1, we're actually skipping some bytes here so just
        // blindly updating everything wouldn't be correct
        digest.update(headerBuffer.getData(), 0, headerBuffer.getLength());
        DataOutputBuffer out = new DataOutputBuffer();
        Iterator<IColumn> iter = iterator();
        while (iter.hasNext())
        {
            IColumn column = iter.next();
            out.reset();
            try
            {
                emptyColumnFamily.getColumnSerializer().serialize(column, out);
            }
            catch (IOException e)
            {
                throw new IOError(e);
            }
            digest.update(out.getData(), 0, out.getLength());
        }
    }
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        // pack message with header in a bytebuffer
        byte[] data;
        try
        {
            DataOutputBuffer buffer = new DataOutputBuffer();
            buffer.writeUTF(id);
            Message.serializer().serialize(message, buffer);
            data = buffer.getData();
        }
        catch (IOException e)
        {
            throw new RuntimeException(e);
        }
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         * | No. of Pending files | Pending Files ... |
         */
        byte[] bytes;
        try
        {
            DataOutputBuffer buffer = new DataOutputBuffer();
            StreamHeader.serializer().serialize(streamHeader, buffer);
            bytes = buffer.getData();
        }
        catch (IOException e)
        {
            throw new RuntimeException(e);
        }
        assert bytes.length > 0;

        ByteBuffer buffer = ByteBuffer.allocate(4 + 4 + 4 + bytes.length);
        buffer.putInt(PROTOCOL_MAGIC);
        buffer.putInt(header);
        buffer.putInt(bytes.length);
        buffer.put(bytes);
        buffer.flip();
        return buffer;
    }
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Related Classes of org.apache.cassandra.io.util.DataOutputBuffer

  • org.apache.cassandra.AbstractSerializationsTester
  • org.apache.cassandra.bulkloader.CassandraBulkLoader
  • org.apache.cassandra.db.BatchlogManager
  • org.apache.cassandra.db.Cell
  • org.apache.cassandra.db.Column
  • org.apache.cassandra.db.ColumnFamily
  • org.apache.cassandra.db.ColumnFamilyTest
  • org.apache.cassandra.db.ColumnIndexer
  • org.apache.cassandra.db.commitlog.CommitLogSegment
  • org.apache.cassandra.db.compaction.LazilyCompactedRow
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