Package org.duracloud.sync.backup

Class ChangedListBackupManager

java.lang.Object

org.duracloud.sync.backup.ChangedListBackupManager

All Implemented Interfaces:

Runnable

public class ChangedListBackupManager
extends Object
implements Runnable

Manages the backing up of the changed list on a consistent schedule.

Field Summary

Fields

Modifier and Type	Field	Description
protected static final int	DEFAULT_SLEEP_TIME
static final int	SAVED_BACKUPS

Constructor Summary

Constructors

Constructor	Description
ChangedListBackupManager(ChangedList changedList, File backupDir, long backupFrequency, List<File> contentDirs)

Method Summary

Modifier and Type	Method	Description
void	clear()
void	endBackup()
boolean	hasBackups()
long	loadBackup()	Attempts to reload the changed list from a backup file.
void	run()	Runs the backup manager.
protected void	sleep(long milliseconds)

Methods inherited from class java.lang.Object

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

Field Details

SAVED_BACKUPS

public static final int SAVED_BACKUPS

See Also:

• Constant Field Values

DEFAULT_SLEEP_TIME

protected static final int DEFAULT_SLEEP_TIME

See Also:

• Constant Field Values

Constructor Details

ChangedListBackupManager

public ChangedListBackupManager(ChangedList changedList,
 File backupDir,
 long backupFrequency,
 List<File> contentDirs)

Method Details

loadBackup

public long loadBackup()

Attempts to reload the changed list from a backup file. If there are no backup files or the backup file cannot be read, returns -1, otherwise the backup file is loaded and the time the backup file was written is returned.

Returns:

the write time of the backup file, or -1 if no backup is available

run

public void run()

Runs the backup manager. Writes out files which are a backups of the changed list based on the set backup frequency. Retains SAVED_BACKUPS number of backup files, removes the rest.

Specified by:

run in interface Runnable

sleep

protected void sleep(long milliseconds)

clear

public void clear()

endBackup

public void endBackup()

hasBackups

public boolean hasBackups()