org.archive.wayback.resourcestore.locationdb
Class ResourceFileLocationDBUpdater

java.lang.Object
  org.archive.wayback.resourcestore.locationdb.ResourceFileLocationDBUpdater

All Implemented Interfaces:

Shutdownable

public class ResourceFileLocationDBUpdater
extends java.lang.Object
implements Shutdownable

Class which performs updates on a ResourceFileLocationDB, based on files appearing in a incoming directory. When files are noticed in the "incoming" directory, they are assumed to be in the format serialized by org.archive.wayback.resourcestore.resourcefile.ResourceFileList These files are synchronized with the ResourceFileLocationDB, and deleted. Each file has a logical name, which is assumed to uniquely identify a ResourceFileSource. As an optimization, the last state of each ResouceFileSource is kept in a file under the "state" directory. This allows this class to compute a difference of the last state with the new files in incoming, and only deltas: new files, removed files, and possibly moved files, need to applied to the ResourceFileLocationDB.

Version:

$Date$, $Revision$

Author:

brad

Field Summary

static java.lang.String

TMP_SUFFIX

Constructor Summary

ResourceFileLocationDBUpdater()

Method Summary

ResourceFileLocationDB	getDb()
java.lang.String	getIncomingDir()
long	getInterval()
java.lang.String	getStateDir()
void	init()
void	setDb(ResourceFileLocationDB db)
void	setIncomingDir(java.lang.String incomingDir)
void	setInterval(long interval)
void	setStateDir(java.lang.String stateDir)
void	shutdown()
boolean	synchronize(java.io.File update)
int	synchronizeIncoming()

Methods inherited from class java.lang.Object

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

Field Detail

TMP_SUFFIX

public static final java.lang.String TMP_SUFFIX

See Also:

Constant Field Values

Constructor Detail

ResourceFileLocationDBUpdater

public ResourceFileLocationDBUpdater()

Method Detail

init

public void init()

shutdown

public void shutdown()

Specified by:

shutdown in interface Shutdownable

synchronizeIncoming

public int synchronizeIncoming()
                        throws java.io.IOException

Throws:

java.io.IOException

synchronize

public boolean synchronize(java.io.File update)
                    throws java.io.IOException

Throws:

java.io.IOException

getDb

public ResourceFileLocationDB getDb()

Returns:

the db

setDb

public void setDb(ResourceFileLocationDB db)

Parameters:

db - the db to set

getStateDir

public java.lang.String getStateDir()

Returns:

the stateDir

setStateDir

public void setStateDir(java.lang.String stateDir)
                 throws java.io.IOException

Parameters:

stateDir - the stateDir to set

Throws:

java.io.IOException

getIncomingDir

public java.lang.String getIncomingDir()

Returns:

the incomingDir

setIncomingDir

public void setIncomingDir(java.lang.String incomingDir)
                    throws java.io.IOException

Parameters:

incomingDir - the incomingDir to set

Throws:

java.io.IOException

getInterval

public long getInterval()

Returns:

the interval

setInterval

public void setInterval(long interval)

Parameters:

interval - the interval to set