TopologyMonitorService (JBoss Cluster API) - JBoss 4.0.1 sp1 cluster API Documentation 英文版文档

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org.jboss.ha.framework.server.util
Class TopologyMonitorService

java.lang.Object
  org.jboss.mx.util.JBossNotificationBroadcasterSupport
      org.jboss.system.ServiceMBeanSupport
          org.jboss.ha.framework.server.util.TopologyMonitorService

All Implemented Interfaces:: HAPartition.AsynchHAMembershipListener, HAPartition.HAMembershipListener, javax.management.MBeanRegistration, javax.management.NotificationBroadcaster, javax.management.NotificationEmitter, org.jboss.system.Service, org.jboss.system.ServiceMBean, TopologyMonitorServiceMBean

public class TopologyMonitorService
extends org.jboss.system.ServiceMBeanSupport
implements TopologyMonitorServiceMBean, HAPartition.AsynchHAMembershipListener

A cluster parition membership monitor. It can be used to view how the nodes in a cluster are seeing the topology change using either email or a centralized log server. To use this to send email on change notifications use the following log4j.xml fragments: You can also have this service notify another MBean of the change to perform arbitrary checks by specifying the MBean name as the TriggerServiceName attribute value. This MBean must have an operation with the following signature:

   param: removed ArrayList of nodes that were removed
   param: added ArrayList of nodes that were added
   param: members ArrayList of nodes currently in the cluster
   param: logCategoryName the log4j category name used by the
      TopologyMonitorService. This should be used for logging to integrate with
      the TopologyMonitorService output.
   public void membershipChanged(ArrayList deadMembers, ArrayList newMembers,
      ArrayList allMembers, String logCategoryName)

Version:: $Revision: 1.3 $
Author:: Scott.Stark@jboss.org

Nested Class Summary

static class TopologyMonitorService.AddressPort


Field Summary

Fields inherited from class org.jboss.system.ServiceMBeanSupport

log, server, SERVICE_CONTROLLER_SIG, serviceName

Fields inherited from interface org.jboss.system.ServiceMBean

CREATE_EVENT, CREATED, DESTROY_EVENT, DESTROYED, FAILED, REGISTERED, START_EVENT, STARTED, STARTING, states, STOP_EVENT, STOPPED, STOPPING, UNREGISTERED

Constructor Summary

TopologyMonitorService()


Method Summary

Vector getClusterNodes()
          Get the current cluster parition membership info

String getPartitionName()
          Get the cluster parition name the mbean is monitoring

javax.management.ObjectName getTriggerServiceName()
          Get the trigger mbean to notify on cluster membership changes

void membershipChanged(Vector deadMembers, Vector newMembers, Vector allMembers)
          Called when a new partition topology occurs.

void setPartitionName(String name)
          Set the cluster parition name the mbean is monitoring

void setTriggerServiceName(javax.management.ObjectName triggerServiceName)
          Set the trigger mbean to notify on cluster membership changes

protected void startService()


protected void stopService()


Methods inherited from class org.jboss.system.ServiceMBeanSupport

create, createService, destroy, destroyService, getLog, getName, getNextNotificationSequenceNumber, getObjectName, getServer, getServiceName, getState, getStateString, jbossInternalCreate, jbossInternalDescription, jbossInternalDestroy, jbossInternalLifecycle, jbossInternalStart, jbossInternalStop, postDeregister, postRegister, preDeregister, preRegister, start, stop

Methods inherited from class org.jboss.mx.util.JBossNotificationBroadcasterSupport

addNotificationListener, getNotificationInfo, handleNotification, removeNotificationListener, removeNotificationListener, sendNotification

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.jboss.system.ServiceMBean

getName, getState, getStateString, jbossInternalLifecycle

Methods inherited from interface org.jboss.system.Service

create, destroy, start, stop

Constructor Detail

TopologyMonitorService

public TopologyMonitorService()

Method Detail

startService

protected void startService()
                     throws Exception

Throws:: Exception

stopService

protected void stopService()
                    throws Exception

Throws:: Exception