/// <exception cref="System.IO.IOException"/>
public HdfsDataOutputStream(CryptoOutputStream @out, FileSystem.Statistics stats,
long startPosition)
: base(@out, stats, startPosition)
{
Preconditions.CheckArgument(@out.GetWrappedStream() is DFSOutputStream, "CryptoOutputStream should wrap a DFSOutputStream"
);
}
/// <summary>
/// Write the contents of the DataStream to an output stream.
/// </summary>
/// <param name="stream"> </param>
/// <exception cref="IOException"> </exception>
public virtual void send(CryptoOutputStream stream)
{
try
{
stream.writeLength(totalLength);
for (DataSegment segment = firstSegment; segment != null; segment = segment.next)
{
stream.Write(segment.buffer, 0, segment.length);
}
stream.Flush();
}
finally
{
reset();
}
}
/// <summary>
/// Create IOStreamPair of
/// <see cref="Org.Apache.Hadoop.Crypto.CryptoInputStream"/>
/// and
/// <see cref="Org.Apache.Hadoop.Crypto.CryptoOutputStream"/>
/// </summary>
/// <param name="conf">the configuration</param>
/// <param name="cipherOption">negotiated cipher option</param>
/// <param name="out">underlying output stream</param>
/// <param name="in">underlying input stream</param>
/// <param name="isServer">is server side</param>
/// <returns>IOStreamPair the stream pair</returns>
/// <exception cref="System.IO.IOException">for any error</exception>
public static IOStreamPair CreateStreamPair(Configuration conf, CipherOption cipherOption
, OutputStream @out, InputStream @in, bool isServer)
{
if (Log.IsDebugEnabled())
{
Log.Debug("Creating IOStreamPair of CryptoInputStream and " + "CryptoOutputStream."
);
}
CryptoCodec codec = CryptoCodec.GetInstance(conf, cipherOption.GetCipherSuite());
byte[] inKey = cipherOption.GetInKey();
byte[] inIv = cipherOption.GetInIv();
byte[] outKey = cipherOption.GetOutKey();
byte[] outIv = cipherOption.GetOutIv();
InputStream cIn = new CryptoInputStream(@in, codec, isServer ? inKey : outKey, isServer
? inIv : outIv);
OutputStream cOut = new CryptoOutputStream(@out, codec, isServer ? outKey : inKey
, isServer ? outIv : inIv);
return(new IOStreamPair(cIn, cOut));
}
/// <exception cref="System.IO.IOException"/>
public HdfsDataOutputStream(CryptoOutputStream @out, FileSystem.Statistics stats)
: this(@out, stats, 0L)
{
}
