org.apache.nifi.processors.pgp.io

Class EncodingStreamCallback

java.lang.Object

org.apache.nifi.processors.pgp.io.EncodingStreamCallback

All Implemented Interfaces:

StreamCallback

Direct Known Subclasses:

EncryptContentPGP.EncryptStreamCallback, SignContentPGP.SignatureStreamCallback

public class EncodingStreamCallback
extends Object
implements StreamCallback

Encoding Stream Callback handles writing PGP messages using configured properties

Field Summary

Fields

Modifier and Type	Field and Description
private CompressionAlgorithm	compressionAlgorithm
private FileEncoding	fileEncoding
private String	filename
private static int	OUTPUT_BUFFER_SIZE

Constructor Summary

Constructors

Constructor and Description
EncodingStreamCallback(FileEncoding fileEncoding, CompressionAlgorithm compressionAlgorithm, String filename)

Method Summary

Modifier and Type	Method and Description
protected byte[]	createOutputBuffer() Create Output Buffer byte array with size of 8192
private OutputStream	getEncodingOutputStream(OutputStream outputStream)
protected OutputStream	openLiteralOutputStream(org.bouncycastle.openpgp.PGPLiteralDataGenerator generator, OutputStream compressedOutputStream) Open Literal Data Output Stream using binary indicator with configured filename and current date indicating modification
void	process(InputStream inputStream, OutputStream outputStream) Process Input Stream and write encoded contents to Output Stream
protected void	processCompression(InputStream inputStream, OutputStream compressedOutputStream) Process Compression passing Input Stream through Literal Data Output Stream
protected void	processEncoding(InputStream inputStream, OutputStream encodingOutputStream) Process Encoding passing Input Stream through Compression Output Stream

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Detail

OUTPUT_BUFFER_SIZE

private static final int OUTPUT_BUFFER_SIZE

See Also:

Constant Field Values

fileEncoding

private final FileEncoding fileEncoding

compressionAlgorithm

private final CompressionAlgorithm compressionAlgorithm

filename

private final String filename

Constructor Detail

EncodingStreamCallback

public EncodingStreamCallback(FileEncoding fileEncoding,
                              CompressionAlgorithm compressionAlgorithm,
                              String filename)

Method Detail

process

public void process(InputStream inputStream,
                    OutputStream outputStream)
             throws IOException

Process Input Stream and write encoded contents to Output Stream

Specified by:

process in interface StreamCallback

Parameters:

inputStream - Input Stream

outputStream - Output Stream for encrypted contents

Throws:

IOException - Thrown when unable to read or write streams

createOutputBuffer

protected byte[] createOutputBuffer()

Create Output Buffer byte array with size of 8192

Returns:

New empty array of 8192 bytes

processEncoding

protected void processEncoding(InputStream inputStream,
                               OutputStream encodingOutputStream)
                        throws IOException,
                               org.bouncycastle.openpgp.PGPException

Process Encoding passing Input Stream through Compression Output Stream

Parameters:

inputStream - Input Stream

encodingOutputStream - Output Stream configured according to File Encoding

Throws:

IOException - Thrown when unable to read or write streams

org.bouncycastle.openpgp.PGPException - Thrown when unable to process compression

processCompression

protected void processCompression(InputStream inputStream,
                                  OutputStream compressedOutputStream)
                           throws IOException,
                                  org.bouncycastle.openpgp.PGPException

Process Compression passing Input Stream through Literal Data Output Stream

Parameters:

inputStream - Input Stream

compressedOutputStream - Output Stream configured according to Compression Algorithm

Throws:

IOException - Thrown when unable to read or write streams

org.bouncycastle.openpgp.PGPException - Thrown when unable to process streams using PGP operations

openLiteralOutputStream

protected OutputStream openLiteralOutputStream(org.bouncycastle.openpgp.PGPLiteralDataGenerator generator,
                                               OutputStream compressedOutputStream)
                                        throws IOException

Open Literal Data Output Stream using binary indicator with configured filename and current date indicating modification

Parameters:

generator - PGP Literal Data Generator

compressedOutputStream - Output Stream configured according to Compression Algorithm

Returns:

Literal Data Output Stream

Throws:

IOException - Thrown when unable to open Literal Data Output Stream

getEncodingOutputStream

private OutputStream getEncodingOutputStream(OutputStream outputStream)