org.jboss.ha.framework.server
Class HATarget

java.lang.Object
  org.jboss.ha.framework.server.HATarget

All Implemented Interfaces:

DistributedReplicantManager.ReplicantListener

Direct Known Subclasses:

HARMIServerImpl.RefreshProxiesHATarget

public class HATarget
extends Object
implements DistributedReplicantManager.ReplicantListener

This class is a holder and manager of replicants. It manages lists of replicated objects and changes the list as the HAPartition notifies it.

Version:

$Revision: 1.9.6.2 $

Revisions:

2002/01/13: Bill Burke

1. Initial revision

Author:

bill@burkecentral.com

Field Summary

protected int	allowInvocationsStatus
protected int	clusterViewId
static int	DISABLE_INVOCATIONS
static int	ENABLE_INVOCATIONS
protected EDU.oswego.cs.dl.util.concurrent.Latch	latch
protected org.jboss.logging.Logger	log
static int	MAKE_INVOCATIONS_WAIT
protected HAPartition	partition
protected String	replicantName
protected ArrayList	replicants
protected Serializable	target

Constructor Summary

HATarget(HAPartition partition, String replicantName, Serializable target, int allowInvocations)

Method Summary

protected void	cleanExistenceInCurrentHAPartition()
void	destroy()
void	disable()
HAPartition	getAssociatedPartition()
long	getCurrentViewId()
ArrayList	getReplicants()
void	init()
boolean	invocationsAllowed()
protected void	releaseCurrentLatch()
void	replicantsChanged(String key, List newReplicants, int newReplicantsViewId) Callback called when the content/list of replicant for a given replicant key has changed
void	setInvocationsAuthorization(int status)
String	toString()
void	updateHAPartition(HAPartition partition)

Methods inherited from class java.lang.Object

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

Field Detail

DISABLE_INVOCATIONS

public static final int DISABLE_INVOCATIONS

See Also:

Constant Field Values

MAKE_INVOCATIONS_WAIT

public static final int MAKE_INVOCATIONS_WAIT

See Also:

Constant Field Values

ENABLE_INVOCATIONS

public static final int ENABLE_INVOCATIONS

See Also:

Constant Field Values

replicantName

protected String replicantName

replicants

protected ArrayList replicants

partition

protected HAPartition partition

log

protected org.jboss.logging.Logger log

clusterViewId

protected int clusterViewId

target

protected Serializable target

allowInvocationsStatus

protected int allowInvocationsStatus

latch

protected EDU.oswego.cs.dl.util.concurrent.Latch latch

Constructor Detail

HATarget

public HATarget(HAPartition partition,
                String replicantName,
                Serializable target,
                int allowInvocations)
         throws Exception

Throws:

Exception

Method Detail

init

public void init()
          throws Exception

Throws:

Exception

toString

public String toString()

Overrides:

toString in class Object

getCurrentViewId

public long getCurrentViewId()

destroy

public void destroy()

disable

public void disable()

getReplicants

public ArrayList getReplicants()

updateHAPartition

public void updateHAPartition(HAPartition partition)
                       throws Exception

Throws:

Exception

setInvocationsAuthorization

public void setInvocationsAuthorization(int status)

invocationsAllowed

public boolean invocationsAllowed()
                           throws InterruptedException

Throws:

InterruptedException

releaseCurrentLatch

protected void releaseCurrentLatch()

getAssociatedPartition

public HAPartition getAssociatedPartition()

replicantsChanged

public void replicantsChanged(String key,
                              List newReplicants,
                              int newReplicantsViewId)

Description copied from interface: DistributedReplicantManager.ReplicantListener

Callback called when the content/list of replicant for a given replicant key has changed

Specified by:

replicantsChanged in interface DistributedReplicantManager.ReplicantListener

Parameters:

key - The name of the key of the replicant that has changed

newReplicants - The list of new replicants for the give replicant key. This list will be in a consistent order on all cluster nodes on which the current viewId is in effect

newReplicantsViewId - The new replicant view id corresponding to this change

cleanExistenceInCurrentHAPartition

protected void cleanExistenceInCurrentHAPartition()