org.archive.wayback.liveweb
Class ARCCacheDirectory

java.lang.Object
  org.archive.wayback.liveweb.ARCCacheDirectory

public class ARCCacheDirectory
extends java.lang.Object

Class which manages a growing set of ARC files, managed by an ARCWriterPool. Clients can grab an ARCWriter that they use to append to one of the ARC files. This class also transforms ARCLocations into ARCRecords, using an ARCReader.

Version:

$Date$, $Revision$

Author:

brad

Field Summary

static java.lang.String	LIVE_WEB_ARC_DIR directory where live generated ARCs are stored
static java.lang.String	LIVE_WEB_ARC_PREFIX prefeix for live generated ARC files.

Constructor Summary

ARCCacheDirectory()

Method Summary

java.lang.String	getArcDir()
java.lang.String	getArcPrefix()
Resource	getResource(java.lang.String path, long offset) transform an ARCLocation into a Resource.
org.archive.io.arc.ARCWriter	getWriter() get an ARCWriter.
void	init()
void	returnWriter(org.archive.io.arc.ARCWriter w)
void	setArcDir(java.lang.String arcPath)
void	setArcPrefix(java.lang.String arcPrefix)
void	shutdown() shut down the ARC Writer pool.

Methods inherited from class java.lang.Object

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

Field Detail

LIVE_WEB_ARC_DIR

public static final java.lang.String LIVE_WEB_ARC_DIR

directory where live generated ARCs are stored

See Also:

Constant Field Values

LIVE_WEB_ARC_PREFIX

public static final java.lang.String LIVE_WEB_ARC_PREFIX

prefeix for live generated ARC files.

See Also:

Constant Field Values

Constructor Detail

ARCCacheDirectory

public ARCCacheDirectory()

Method Detail

init

public void init()
          throws java.io.IOException

Throws:

java.io.IOException

shutdown

public void shutdown()

shut down the ARC Writer pool.

getWriter

public org.archive.io.arc.ARCWriter getWriter()
                                       throws java.io.IOException

get an ARCWriter. be sure to return it to the pool with returnWriter.

Returns:

an ARCWriter prepared to store an ARCRecord

Throws:

java.io.IOException

returnWriter

public void returnWriter(org.archive.io.arc.ARCWriter w)
                  throws java.io.IOException

Parameters:

w - previously borrowed ARCWriter

Throws:

java.io.IOException

getResource

public Resource getResource(java.lang.String path,
                            long offset)
                     throws java.io.IOException

transform an ARCLocation into a Resource. Be sure to call close() on it when processing is finished.

Parameters:

path -

offset -

Returns:

the Resource for the location

Throws:

java.io.IOException

getArcPrefix

public java.lang.String getArcPrefix()

Returns:

the arcPrefix

setArcPrefix

public void setArcPrefix(java.lang.String arcPrefix)

Parameters:

arcPrefix - the arcPrefix to set

getArcDir

public java.lang.String getArcDir()

Returns:

the arcDir

setArcDir

public void setArcDir(java.lang.String arcPath)

Parameters:

arcPath - the arcPath to set