Package com.log4rich.util

Class CompressionManager

java.lang.Object

com.log4rich.util.CompressionManager

public class CompressionManager
extends Object

Manages external compression of log files. Supports configurable compression programs and arguments. This class handles the execution of external compression programs with timeout support and proper error handling.

Constructor Summary

Constructors

Constructor	Description
CompressionManager()	Creates a new CompressionManager with default settings.
CompressionManager(String program, String arguments, long timeoutMillis)	Creates a new CompressionManager with the specified settings.

Method Summary

Modifier and Type	Method	Description
File	compressFile(File sourceFile)	Compresses a file using the configured compression program.
String	getArguments()	Gets the compression program arguments.
String	getProgram()	Gets the compression program name.
long	getTimeoutMillis()	Gets the compression timeout in milliseconds.
boolean	isProgramAvailable()	Checks if the compression program is available.

Methods inherited from class java.lang.Object

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

Constructor Details

CompressionManager

public CompressionManager()

Creates a new CompressionManager with default settings. Uses gzip as the compression program with no additional arguments and a 30-second timeout.

CompressionManager

public CompressionManager(String program,
 String arguments,
 long timeoutMillis)

Creates a new CompressionManager with the specified settings.

Parameters:

program - the compression program to use (e.g., "gzip", "bzip2", "xz")

arguments - additional arguments for the compression program

timeoutMillis - the timeout in milliseconds for compression operations

Method Details

compressFile

public File compressFile(File sourceFile)

Compresses a file using the configured compression program. If compression fails, the original file is returned.

Parameters:

sourceFile - the file to compress

Returns:

the compressed file, or the original file if compression failed

isProgramAvailable

public boolean isProgramAvailable()

Checks if the compression program is available. Tests if the program can be executed by running it with --version.

Returns:

true if the program can be executed, false otherwise

getProgram

public String getProgram()

Gets the compression program name.

Returns:

the compression program name

getArguments

public String getArguments()

Gets the compression program arguments.

Returns:

the compression program arguments

getTimeoutMillis

public long getTimeoutMillis()

Gets the compression timeout in milliseconds.

Returns:

the compression timeout in milliseconds