Examples with ByteBufferBackedDataInput org.apache.ignite.internal.processors.cache.persistence.wal.ByteBufferBackedDataInput used on opensource projects

Example 1 with ByteBufferBackedDataInput

use of org.apache.ignite.internal.processors.cache.persistence.wal.ByteBufferBackedDataInput in project ignite by apache.

the class RecordV1Serializer method readSegmentHeader.

/**
 * Reads stored record from provided {@code io}.
 * NOTE: Method mutates position of {@code io}.
 *
 * @param io I/O interface for file.
 * @param segmentFileInputFactory File input factory.
 * @return Instance of {@link SegmentHeader} extracted from the file.
 * @throws IgniteCheckedException If failed to read serializer version.
 */
public static SegmentHeader readSegmentHeader(SegmentIO io, SegmentFileInputFactory segmentFileInputFactory) throws IgniteCheckedException, IOException {
    try (ByteBufferExpander buf = new ByteBufferExpander(HEADER_RECORD_SIZE, ByteOrder.nativeOrder())) {
        ByteBufferBackedDataInput in = segmentFileInputFactory.createFileInput(io, buf);
        in.ensure(HEADER_RECORD_SIZE);
        int recordType = in.readUnsignedByte();
        if (recordType == WALRecord.RecordType.STOP_ITERATION_RECORD_TYPE)
            throw new SegmentEofException("Reached logical end of the segment", null);
        WALRecord.RecordType type = WALRecord.RecordType.fromIndex(recordType - 1);
        if (type != WALRecord.RecordType.HEADER_RECORD)
            throw new IOException("Can't read serializer version", null);
        // Read file pointer.
        WALPointer ptr = readPosition(in);
        if (io.getSegmentId() != ptr.index())
            throw new SegmentEofException("Reached logical end of the segment by pointer", null);
        assert ptr.fileOffset() == 0 : "Header record should be placed at the beginning of file " + ptr;
        long hdrMagicNum = in.readLong();
        boolean compacted;
        if (hdrMagicNum == HeaderRecord.REGULAR_MAGIC)
            compacted = false;
        else if (hdrMagicNum == HeaderRecord.COMPACTED_MAGIC)
            compacted = true;
        else {
            throw new IOException("Magic is corrupted [exp=" + U.hexLong(HeaderRecord.REGULAR_MAGIC) + ", actual=" + U.hexLong(hdrMagicNum) + ']');
        }
        // Read serializer version.
        int ver = in.readInt();
        // Read and skip CRC.
        in.readInt();
        return new SegmentHeader(ver, compacted);
    }
}

Example 2 with ByteBufferBackedDataInput

use of org.apache.ignite.internal.processors.cache.persistence.wal.ByteBufferBackedDataInput in project ignite by apache.

the class RecordDataV1Serializer method readEncryptedDataEntry.

/**
 * @param in Input to read from.
 * @param recType Record type.
 * @return Read entry.
 * @throws IOException If failed.
 * @throws IgniteCheckedException If failed.
 */
DataEntry readEncryptedDataEntry(ByteBufferBackedDataInput in, RecordType recType) throws IOException, IgniteCheckedException {
    boolean needDecryption = in.readByte() == ENCRYPTED;
    RecordType dataRecordType = recType == ENCRYPTED_DATA_RECORD_V3 ? DATA_RECORD_V2 : DATA_RECORD;
    if (needDecryption) {
        if (encSpi == null) {
            skipEncryptedRecord(in, false);
            return new EncryptedDataEntry();
        }
        T3<ByteBufferBackedDataInput, Integer, RecordType> clData = readEncryptedData(in, false, recType == ENCRYPTED_DATA_RECORD_V2 || recType == ENCRYPTED_DATA_RECORD_V3);
        if (clData.get1() == null)
            return null;
        return readPlainDataEntry(clData.get1(), dataRecordType);
    }
    return readPlainDataEntry(in, dataRecordType);
}