dk.netarkivet.archive.checksum.distribute
Class ChecksumArchiveServer

java.lang.Object
  dk.netarkivet.archive.distribute.ArchiveMessageHandler
      dk.netarkivet.archive.checksum.distribute.ChecksumArchiveServer

All Implemented Interfaces:

ArchiveMessageVisitor, CleanupIF, javax.jms.MessageListener

Direct Known Subclasses:

ChecksumFileServer

public abstract class ChecksumArchiveServer
extends ArchiveMessageHandler
implements CleanupIF

Any subclass must be invoked through a method called 'getInstance'.

Field Summary

protected java.lang.String	checksumAppId The unique id for this instance.
protected JMSConnection	jmsCon The JMS connection.
protected ChannelID	theCR The channel used for communication.

Constructor Summary

ChecksumArchiveServer()

Method Summary

abstract void	cleanup() Method for cleaning up.
(package private) abstract void	close() Method for closing.
abstract java.lang.String	getAppId() Method for retrieving the application id.
abstract void	visit(CorrectMessage msg) Requiring all inheritors of this interface to handle the CorrectMessage.
abstract void	visit(GetAllChecksumsMessage msg) Requiring all inheritors of this interface to handle the GetAllChecksumMessage.
abstract void	visit(GetAllFilenamesMessage msg) Requiring all inheritors of this interface to handle the GetAllFilenamesMessage.
abstract void	visit(GetChecksumMessage msg) Requiring all inheritors of this interface to handle the GetChecksumMessage.
abstract void	visit(UploadMessage msg) Requiring all inheritors of this interface to handle the UploadMessage.

Methods inherited from class dk.netarkivet.archive.distribute.ArchiveMessageHandler

onMessage, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit

Methods inherited from class java.lang.Object

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

Field Detail

jmsCon

protected JMSConnection jmsCon

The JMS connection.

checksumAppId

protected java.lang.String checksumAppId

The unique id for this instance.

theCR

protected ChannelID theCR

The channel used for communication.

Constructor Detail

ChecksumArchiveServer

public ChecksumArchiveServer()

Method Detail

close

abstract void close()

Method for closing.

cleanup

public abstract void cleanup()

Method for cleaning up.

Specified by:

cleanup in interface CleanupIF

getAppId

public abstract java.lang.String getAppId()

Method for retrieving the application id.

Returns:

The application id.

visit

public abstract void visit(UploadMessage msg)

Requiring all inheritors of this interface to handle the UploadMessage. The data should be fetched and put into the archive.

Specified by:

visit in interface ArchiveMessageVisitor

Overrides:

visit in class ArchiveMessageHandler

Parameters:

msg - The UploadMessage to be handled.

visit

public abstract void visit(CorrectMessage msg)

Requiring all inheritors of this interface to handle the CorrectMessage. If an entry in the archive corresponds to the 'wrong' entry described in the CorrectMessage, then the file in the CorrectMessage should replace the current entry in the archive.

Specified by:

visit in interface ArchiveMessageVisitor

Overrides:

visit in class ArchiveMessageHandler

Parameters:

msg - The CorrectMessage to be handled.

visit

public abstract void visit(GetChecksumMessage msg)

Requiring all inheritors of this interface to handle the GetChecksumMessage. The checksum of the wanted entry in the archive should be fetched and returned.

Specified by:

visit in interface ArchiveMessageVisitor

Overrides:

visit in class ArchiveMessageHandler

Parameters:

msg - The GetChecksumMessage to be handled.

visit

public abstract void visit(GetAllChecksumsMessage msg)

Requiring all inheritors of this interface to handle the GetAllChecksumMessage. The entire archive should be put into a file corresponding to a ChecksumJob file, then made into a remote file and sent back through the reply.

Specified by:

visit in interface ArchiveMessageVisitor

Overrides:

visit in class ArchiveMessageHandler

Parameters:

msg - The GetAllChecksumMessage to be handled.

visit

public abstract void visit(GetAllFilenamesMessage msg)

Requiring all inheritors of this interface to handle the GetAllFilenamesMessage. The filenames of all the entries in the archive should be placed in a file corresponding to a FilelistJob and sent back through the reply.

Specified by:

visit in interface ArchiveMessageVisitor

Overrides:

visit in class ArchiveMessageHandler

Parameters:

msg - The GetAllFilenamesMessage to be handled.