Package com.oracle.bmc.objectstorage.transfer.internal

Class StreamHelper

java.lang.Object

com.oracle.bmc.objectstorage.transfer.internal.StreamHelper

public class StreamHelper
extends Object

Temporary helper class that should be moved into the common library later.

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
static class	StreamHelper.NullOutputStream

Constructor Summary

Constructors

Constructor	Description
StreamHelper()

Method Summary

Modifier and Type	Method	Description
static String	base64Encode(MessageDigest messageDigest)	Base64 encodes the digest (resets the digest).
static String	base64EncodeMd5Digest(byte[] buffer)	Base64 encodes the given byte array after computing its MD5 digest.
static long	copy(InputStream in, OutputStream out)	Copy contents from the input stream into the output stream.
static DigestOutputStream	createCrc32cMessageOutputStream(OutputStream stream)	Creates a DigestOutputStream where the digest uses CRC32C.
static DigestOutputStream	createMd5MessageOutputStream(OutputStream stream)	Creates a DigestOutputStream where the digest uses MD5.
static DigestOutputStream	createSha256MessageOutputStream(OutputStream stream)	Creates a DigestOutputStream where the digest uses SHA-256.
static DigestOutputStream	createSha384MessageOutputStream(OutputStream stream)	Creates a DigestOutputStream where the digest uses SHA-384.

Methods inherited from class java.lang.Object

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

Constructor Detail

StreamHelper

public StreamHelper()

Method Detail

copy

public static long copy(InputStream in,
                        OutputStream out)
                 throws IOException

Copy contents from the input stream into the output stream.

The input stream will be closed in both successful or failure cases.

Parameters:

in - The stream to copy.

out - The stream to write to.

Returns:

the number of bytes copied.

Throws:

IOException - if there were any issues

base64EncodeMd5Digest

public static String base64EncodeMd5Digest(byte[] buffer)

Base64 encodes the given byte array after computing its MD5 digest.

Parameters:

buffer - The buffer to encode

Returns:

The base64-encoded MD5 digest

createMd5MessageOutputStream

public static DigestOutputStream createMd5MessageOutputStream(OutputStream stream)

Creates a DigestOutputStream where the digest uses MD5.

Parameters:

stream - The output stream to write to.

Returns:

A new DigestOutputStream

createSha384MessageOutputStream

public static DigestOutputStream createSha384MessageOutputStream(OutputStream stream)

Creates a DigestOutputStream where the digest uses SHA-384.

Parameters:

stream - The output stream to write to.

Returns:

A new DigestOutputStream

createSha256MessageOutputStream

public static DigestOutputStream createSha256MessageOutputStream(OutputStream stream)

Creates a DigestOutputStream where the digest uses SHA-256.

Parameters:

stream - The output stream to write to.

Returns:

A new DigestOutputStream

createCrc32cMessageOutputStream

public static DigestOutputStream createCrc32cMessageOutputStream(OutputStream stream)

Creates a DigestOutputStream where the digest uses CRC32C.

Parameters:

stream - The output stream to write to.

Returns:

A new DigestOutputStream

base64Encode

public static String base64Encode(MessageDigest messageDigest)

Base64 encodes the digest (resets the digest).

Parameters:

messageDigest - The digest

Returns:

The base64 encoded value