/**
* @param encoding encoding used
* @param headerBytes dummy header bytes
* @param fileContext HFile meta data
*/
public HFileBlockDefaultEncodingContext(
DataBlockEncoding encoding, byte[] headerBytes, HFileContext fileContext) {
this.encodingAlgo = encoding;
this.fileContext = fileContext;
Compression.Algorithm compressionAlgorithm =
fileContext.getCompression() == null ? NONE : fileContext.getCompression();
if (compressionAlgorithm != NONE) {
compressor = compressionAlgorithm.getCompressor();
compressedByteStream = new ByteArrayOutputStream();
try {
compressionStream =
compressionAlgorithm.createPlainCompressionStream(compressedByteStream, compressor);
} catch (IOException e) {
throw new RuntimeException(
"Could not create compression stream for algorithm " + compressionAlgorithm, e);
}
}
Encryption.Context cryptoContext = fileContext.getEncryptionContext();
if (cryptoContext != Encryption.Context.NONE) {
cryptoByteStream = new ByteArrayOutputStream();
iv = new byte[cryptoContext.getCipher().getIvLength()];
new SecureRandom().nextBytes(iv);
}
dummyHeader =
Preconditions.checkNotNull(
headerBytes,
"Please pass HConstants.HFILEBLOCK_DUMMY_HEADER instead of null for param headerBytes");
}
