org.apache.flume.channel.file
Class Serialization

java.lang.Object
  org.apache.flume.channel.file.Serialization

@InterfaceAudience.Private
@InterfaceStability.Unstable
public class Serialization
extends Object

Field Summary

static org.slf4j.Logger	LOG
static String	METADATA_FILENAME
static String	METADATA_TMP_FILENAME
static String	OLD_METADATA_FILENAME

Method Summary

static boolean	compressFile(File uncompressed, File compressed) Compress file using Snappy
static boolean	copyFile(File from, File to) Copy a file using a 64K size buffer.
static boolean	decompressFile(File compressed, File decompressed) Decompress file using Snappy

Methods inherited from class java.lang.Object

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

Field Detail

METADATA_FILENAME

public static final String METADATA_FILENAME

See Also:

Constant Field Values

METADATA_TMP_FILENAME

public static final String METADATA_TMP_FILENAME

See Also:

Constant Field Values

OLD_METADATA_FILENAME

public static final String OLD_METADATA_FILENAME

See Also:

Constant Field Values

LOG

public static final org.slf4j.Logger LOG

Method Detail

copyFile

public static boolean copyFile(File from,
                               File to)
                        throws IOException

Copy a file using a 64K size buffer. This method will copy the file and then fsync to disk

Parameters:

from - File to copy - this file should exist

to - Destination file - this file should not exist

Returns:

true if the copy was successful

Throws:

IOException

compressFile

public static boolean compressFile(File uncompressed,
                                   File compressed)
                            throws IOException

Compress file using Snappy

Parameters:

uncompressed - File to compress - this file should exist

compressed - Compressed file - this file should not exist

Returns:

true if compression was successful

Throws:

IOException

decompressFile

public static boolean decompressFile(File compressed,
                                     File decompressed)
                              throws IOException

Decompress file using Snappy

Parameters:

compressed - File to compress - this file should exist

decompressed - Compressed file - this file should not exist

Returns:

true if decompression was successful

Throws:

IOException