org.jppf.management

Class JMXDriverConnectionWrapper

java.lang.Object

org.jppf.utils.concurrent.ThreadSynchronization

org.jppf.management.AbstractJMXConnectionWrapper

org.jppf.management.JMXConnectionWrapper

org.jppf.management.JMXDriverConnectionWrapper

All Implemented Interfaces:

Serializable, AutoCloseable, JPPFAdminMBean, JPPFDriverAdminMBean

public class JMXDriverConnectionWrapper
extends JMXConnectionWrapper
implements JPPFDriverAdminMBean

Driver-specific JMX connection wrapper, implementing a user-friendly interface for the monitoring and management of a JPPF driver. Note that this class implements the interface JPPFDriverAdminMBean.

See Also:

Serialized Form

Field Summary

Fields inherited from class org.jppf.management.AbstractJMXConnectionWrapper

closed, connected, CONNECTION_NAME_PREFIX, connectionThread, displayName, env, host, idString, jmxc, local, mbeanConnection, port, sslEnabled, url

Fields inherited from class org.jppf.utils.concurrent.ThreadSynchronization

stopped

Fields inherited from interface org.jppf.management.JPPFDriverAdminMBean

MBEAN_NAME

Constructor Summary

Constructors

Constructor and Description
JMXDriverConnectionWrapper() Initialize a local connection to the MBean server.
JMXDriverConnectionWrapper(String host, int port) Initialize a plain (non-secure) connection to the remote MBean server.
JMXDriverConnectionWrapper(String host, int port, boolean secure) Initialize the connection to the remote MBean server.

Method Summary

Methods

Modifier and Type	Method and Description
void	cancelJob(String jobId) Cancel the job with the specified id.
String	changeLoadBalancerSettings(String algorithm, Map<Object,Object> parameters) Change the bundle size tuning settings.
Map<String,Object>	forwardGetAttribute(NodeSelector selector, String name, String attribute) Get the value of an attribute of the specified MBean for each specified node.
Map<String,Object>	forwardInvoke(NodeSelector selector, String name, String methodName) Convenience method to invoke an MBean method that has no parameter.
Map<String,Object>	forwardInvoke(NodeSelector selector, String name, String methodName, Object[] params, String[] signature) Invoke a method on the specified MBean of all nodes attached to the driver.
Map<String,Object>	forwardSetAttribute(NodeSelector selector, String name, String attribute, Object value) Set the value of an attribute of the specified MBean on the specified nodes attached to the driver.
Map<String,Boolean>	getActiveState(NodeSelector selector) Get the active states of the nodes specified vith a NodeSelector.
String[]	getAllJobIds() Deprecated. use JMXDriverConnectionWrapper.getJobManager().getAllJobUuids() instead.
boolean	getBroadcasting() Determine whether the driver is broadcasting or not.
DiagnosticsMBean	getDiagnosticsProxy() Get a proxy to the diagnostics/JVM health MBean.
JobInformation	getJobInformation(String jobId) Get an object describing the job with the specified id.
DriverJobManagementMBean	getJobManager() This convenience method creates a proxy to the driver's mbean which manages and monitors jobs.
LoadBalancerPersistenceManagement	getLoadBalancerPersistenceManagement() This convenience method creates a proxy to the driver's mbean that manages the load-balancers persisted states.
JPPFNodeForwardingMBean	getNodeForwarder() This convenience method creates a proxy to the driver's mbean which forwards requests to its nodes.
NodeJobInformation[]	getNodeInformation(String jobId) Get a list of objects describing the nodes to which the whole or part of a job was dispatched.
Collection<JPPFManagementInfo>	idleNodesInformation() Request the JMX connection information for all the idle nodes attached to the server.
Collection<JPPFManagementInfo>	idleNodesInformation(NodeSelector selector) Request the JMX connection information for all the idle nodes attached to the server which satisfy the specified selector.
LoadBalancingInformation	loadBalancerInformation() Obtain the current load-balancing settings.
Integer	nbIdleNodes() Get the number of nodes currently idle.
Integer	nbIdleNodes(NodeSelector selector) Get the number of idle nodes attached to the driver that satisfy the specified selector.
Integer	nbIdleNodes(NodeSelector selector, boolean includePeers) Get the number of idle nodes attached to the driver that satisfy the specified selector.
Integer	nbNodes() Get the number of nodes attached to the driver.
Integer	nbNodes(NodeSelector selector) Get the number of nodes attached to the driver that satisfy the specified selector.
Collection<JPPFManagementInfo>	nodesInformation() Request the JMX connection information for all the nodes attached to the server.
Collection<JPPFManagementInfo>	nodesInformation(NodeSelector selector) Request the JMX connection information for all the nodes attached to the server which satisfy the specified selector.
Collection<JPPFManagementInfo>	nodesInformation(NodeSelector selector, boolean includePeers) Request the JMX connection information for all the nodes attached to the server which satisfy the specified selector.
String	registerForwardingNotificationListener(NodeSelector selector, String mBeanName, javax.management.NotificationListener listener, javax.management.NotificationFilter filter, Object handback) Register a notification listener which will receive notifications from from the specified MBean on the selected nodes.
void	resetStatistics() Reset this server's statistics.
String	restartShutdown(Long shutdownDelay, Long restartDelay) Perform a shutdown or restart of the server.
void	resumeJob(String jobId) Resume the job with the specified id.
void	setActiveState(NodeSelector selector, boolean active) Set the active state of the specified nodes.
void	setBroadcasting(boolean broadcasting) Activate or deactivate the broadcasting of the driver's connection information.
JPPFStatistics	statistics() Get the latest statistics snapshot from the JPPF driver.
void	suspendJob(String jobId, Boolean requeue) Suspend the job with the specified id.
JPPFSystemInformation	systemInformation() Get detailed information about the node's JVM properties, environment variables and runtime information such as memory usage and available processors.
void	toggleActiveState(NodeSelector selector) Toggle the activate state of the specified nodes.
void	unregisterForwardingNotificationListener(String listenerID) Register a notification listener which will receive notifications from from the specified MBean on the selected nodes.
void	updateJobPriority(String jobId, Integer newPriority) Update the priority of a job.
void	updateMaxNodes(String jobId, Integer maxNodes) Update the maximum number of nodes a node can run on.

Methods inherited from class org.jppf.management.JMXConnectionWrapper

addNotificationListener, addNotificationListener, close, connect, connectAndWait, getAttribute, getJmxconnector, getMbeanConnection, getNotificationInfo, getPort, getProxy, getProxy, getURL, invoke, invoke, isConnected, isSecure, removeNotificationListener, removeNotificationListener, setAttribute

Methods inherited from class org.jppf.management.AbstractJMXConnectionWrapper

addJMXWrapperListener, fireConnected, fireTimeout, getDisplayName, getHost, getId, getProtocol, removeJMXWrapperListener, setHost, toString

Methods inherited from class org.jppf.utils.concurrent.ThreadSynchronization

goToSleep, goToSleep, goToSleep, isStopped, setStopped, wakeUp

Methods inherited from class java.lang.Object

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

Constructor Detail

JMXDriverConnectionWrapper

public JMXDriverConnectionWrapper()

Initialize a local connection to the MBean server.

JMXDriverConnectionWrapper

public JMXDriverConnectionWrapper(String host,
                          int port)

Initialize a plain (non-secure) connection to the remote MBean server.

Parameters:

host - the host the server is running on.

port - the port used by the server.

JMXDriverConnectionWrapper

public JMXDriverConnectionWrapper(String host,
                          int port,
                          boolean secure)

Initialize the connection to the remote MBean server.

Parameters:

host - the host the server is running on.

port - the port used by the server.

secure - specifies whether the connection should be established over SSL/TLS.

Method Detail

nbNodes

public Integer nbNodes()
                throws Exception

Description copied from interface: JPPFDriverAdminMBean

Get the number of nodes attached to the driver. Note that this method is equivalent to calling nbNodes(null).

Specified by:

nbNodes in interface JPPFDriverAdminMBean

Returns:

the number of nodes, or -1 if information on the nodes could not be retrieved. The returned number does not include peer drivers.

Throws:

Exception - if any error occurs.

nbNodes

public Integer nbNodes(NodeSelector selector)
                throws Exception

Description copied from interface: JPPFDriverAdminMBean

Get the number of nodes attached to the driver that satisfy the specified selector.

Specified by:

nbNodes in interface JPPFDriverAdminMBean

Parameters:

selector - specifies which nodes shouyld be counted. If null, then NodeSelector.ALL_NODES will be used.

Returns:

the number of nodes, or -1 if information on the nodes could not be retrieved. The returned number does not include peer drivers.

Throws:

Exception - if any error occurs.

nodesInformation

public Collection<JPPFManagementInfo> nodesInformation()
                                                throws Exception

Description copied from interface: JPPFDriverAdminMBean

Request the JMX connection information for all the nodes attached to the server. Note that this method is equivalent to calling nodesInformation(null, false).

Specified by:

nodesInformation in interface JPPFDriverAdminMBean

Returns:

a collection of JPPFManagementInfo instances, or null if information on the nodes could not be retrieved.

Throws:

Exception - if any error occurs.

nodesInformation

public Collection<JPPFManagementInfo> nodesInformation(NodeSelector selector)
                                                throws Exception

Description copied from interface: JPPFDriverAdminMBean

Request the JMX connection information for all the nodes attached to the server which satisfy the specified selector. Note that this method is equivalent to calling nodesInformation(selector, false).

Specified by:

nodesInformation in interface JPPFDriverAdminMBean

Parameters:

selector - specifies which nodes shouyld be counted. If null, then NodeSelector.ALL_NODES will be used.

Returns:

a collection of JPPFManagementInfo instances, or null if information on the nodes could not be retrieved.

Throws:

Exception - if any error occurs.

nodesInformation

public Collection<JPPFManagementInfo> nodesInformation(NodeSelector selector,
                                              boolean includePeers)
                                                throws Exception

Description copied from interface: JPPFDriverAdminMBean

Request the JMX connection information for all the nodes attached to the server which satisfy the specified selector.

Specified by:

nodesInformation in interface JPPFDriverAdminMBean

Parameters:

selector - specifies which nodes shouyld be counted. If null, then NodeSelector.ALL_NODES will be used.

includePeers - whether peer drivers should be counted as nodes and included.

Returns:

a collection of JPPFManagementInfo instances, or null if information on the nodes could not be retrieved.

Throws:

Exception - if any error occurs.

statistics

public JPPFStatistics statistics()
                          throws Exception

Description copied from interface: JPPFDriverAdminMBean

Get the latest statistics snapshot from the JPPF driver.

Specified by:

statistics in interface JPPFDriverAdminMBean

Returns:

a JPPFStatistics instance.

Throws:

Exception - if any error occurs.

restartShutdown

public String restartShutdown(Long shutdownDelay,
                     Long restartDelay)
                       throws Exception

Description copied from interface: JPPFDriverAdminMBean

Perform a shutdown or restart of the server.

Specified by:

restartShutdown in interface JPPFDriverAdminMBean

Parameters:

shutdownDelay - the delay before shutting down the server, once the command is received.

restartDelay - the delay before restarting, once the server is shutdown. If it is < 0, no restart occurs.

Returns:

an acknowledgement message.

Throws:

Exception - if any error occurs.

changeLoadBalancerSettings

public String changeLoadBalancerSettings(String algorithm,
                                Map<Object,Object> parameters)
                                  throws Exception

Description copied from interface: JPPFDriverAdminMBean

Change the bundle size tuning settings.

Specified by:

changeLoadBalancerSettings in interface JPPFDriverAdminMBean

Parameters:

algorithm - the name opf the load-balancing algorithm to set.

parameters - the algorithm's parameters.

Returns:

an acknowledgement or error message.

Throws:

Exception - if an error occurred while updating the settings.

loadBalancerInformation

public LoadBalancingInformation loadBalancerInformation()
                                                 throws Exception

Description copied from interface: JPPFDriverAdminMBean

Obtain the current load-balancing settings.

Specified by:

loadBalancerInformation in interface JPPFDriverAdminMBean

Returns:

an instance of LoadBalancingInformation.

Throws:

Exception - if an error occurred while fetching the settings.

cancelJob

public void cancelJob(String jobId)
               throws Exception

Cancel the job with the specified id.

Parameters:

jobId - the id of the job to cancel.

Throws:

Exception - if any error occurs.

suspendJob

public void suspendJob(String jobId,
              Boolean requeue)
                throws Exception

Suspend the job with the specified id.

Parameters:

jobId - the id of the job to suspend.

requeue - true if the sub-jobs running on each node should be canceled and requeued, false if they should be left to execute until completion.

Throws:

Exception - if any error occurs.

resumeJob

public void resumeJob(String jobId)
               throws Exception

Resume the job with the specified id.

Parameters:

jobId - the id of the job to resume.

Throws:

Exception - if any error occurs.

updateMaxNodes

public void updateMaxNodes(String jobId,
                  Integer maxNodes)
                    throws Exception

Update the maximum number of nodes a node can run on.

Parameters:

jobId - the id of the job to update.

maxNodes - the new maximum number of nodes for the job.

Throws:

Exception - if any error occurs.

updateJobPriority

public void updateJobPriority(String jobId,
                     Integer newPriority)
                       throws Exception

Update the priority of a job.

Parameters:

jobId - the id of the job to update.

newPriority - the new priority of the job.

Throws:

Exception - if any error occurs.

getAllJobIds

public String[] getAllJobIds()
                      throws Exception

Deprecated. use JMXDriverConnectionWrapper.getJobManager().getAllJobUuids() instead.

Get the set of ids for all the jobs currently queued or executing.

Returns:

an array of ids as strings.

Throws:

Exception - if any error occurs.

getJobInformation

public JobInformation getJobInformation(String jobId)
                                 throws Exception

Get an object describing the job with the specified id.

Parameters:

jobId - the id of the job to get information about.

Returns:

an instance of JobInformation.

Throws:

Exception - if any error occurs.

getNodeInformation

public NodeJobInformation[] getNodeInformation(String jobId)
                                        throws Exception

Get a list of objects describing the nodes to which the whole or part of a job was dispatched.

Parameters:

jobId - the id of the job for which to find node information.

Returns:

an array of NodeManagementInfo, JobInformation instances.

Throws:

Exception - if any error occurs.

resetStatistics

public void resetStatistics()
                     throws Exception

Description copied from interface: JPPFDriverAdminMBean

Reset this server's statistics. This method triggers a reset() event via the JPPFDriverStatsManager instance.

Specified by:

resetStatistics in interface JPPFDriverAdminMBean

Throws:

Exception - if any error occurs.

systemInformation

public JPPFSystemInformation systemInformation()
                                        throws Exception

Description copied from interface: JPPFAdminMBean

Get detailed information about the node's JVM properties, environment variables and runtime information such as memory usage and available processors.

Specified by:

systemInformation in interface JPPFAdminMBean

Overrides:

systemInformation in class JMXConnectionWrapper

Returns:

a JPPFSystemInformation instance.

Throws:

Exception - if any error occurs.

nbIdleNodes

public Integer nbIdleNodes()
                    throws Exception

Description copied from interface: JPPFDriverAdminMBean

Get the number of nodes currently idle. Note that this method is equivalent to calling nbIdleNodes(null).

Specified by:

nbIdleNodes in interface JPPFDriverAdminMBean

Returns:

the number of idle nodes, or -1 if information on the nodes could not be retrieved. The returned number does not include peer drivers.

Throws:

Exception - if any error occurs.

nbIdleNodes

public Integer nbIdleNodes(NodeSelector selector)
                    throws Exception

Description copied from interface: JPPFDriverAdminMBean

Get the number of idle nodes attached to the driver that satisfy the specified selector.

Specified by:

nbIdleNodes in interface JPPFDriverAdminMBean

Parameters:

selector - specifies which nodes should be counted. If null, then NodeSelector.ALL_NODES will be used.

Returns:

the number of idle nodes, or -1 if information on the nodes could not be retrieved. The returned number does not include peer drivers.

Throws:

Exception - if any error occurs.

nbIdleNodes

public Integer nbIdleNodes(NodeSelector selector,
                  boolean includePeers)
                    throws Exception

Description copied from interface: JPPFDriverAdminMBean

Get the number of idle nodes attached to the driver that satisfy the specified selector.

Specified by:

nbIdleNodes in interface JPPFDriverAdminMBean

Parameters:

selector - specifies which nodes should be counted. If null, then NodeSelector.ALL_NODES will be used.

includePeers - whether peer drivers should be counted as nodes and included.

Returns:

the number of idle nodes, or -1 if information on the nodes could not be retrieved. The returned number does not include peer drivers.

Throws:

Exception - if any error occurs.

idleNodesInformation

public Collection<JPPFManagementInfo> idleNodesInformation()
                                                    throws Exception

Description copied from interface: JPPFDriverAdminMBean

Request the JMX connection information for all the idle nodes attached to the server. Note that this method is equivalent to calling idleNodesInformation(null).

Specified by:

idleNodesInformation in interface JPPFDriverAdminMBean

Returns:

a collection of JPPFManagementInfo instances, or null if information on the nodes could not be retrieved.

Throws:

Exception - if any error occurs.

idleNodesInformation

public Collection<JPPFManagementInfo> idleNodesInformation(NodeSelector selector)
                                                    throws Exception

Description copied from interface: JPPFDriverAdminMBean

Request the JMX connection information for all the idle nodes attached to the server which satisfy the specified selector.

Specified by:

idleNodesInformation in interface JPPFDriverAdminMBean

Parameters:

selector - specifies which nodes shouyld be counted. If null, then NodeSelector.ALL_NODES will be used.

Returns:

a collection of JPPFManagementInfo instances, or null if information on the nodes could not be retrieved.

Throws:

Exception - if any error occurs.

toggleActiveState

public void toggleActiveState(NodeSelector selector)
                       throws Exception

Description copied from interface: JPPFDriverAdminMBean

Toggle the activate state of the specified nodes. Nodes in 'active' state will be deactivated, nodes in 'inactive' state will be activated.

Specified by:

toggleActiveState in interface JPPFDriverAdminMBean

Parameters:

selector - determines which nodes will be activated or deactivated. If null, then NodeSelector.ALL_NODES will be used.

Throws:

Exception - if any error occurs.

getActiveState

public Map<String,Boolean> getActiveState(NodeSelector selector)
                                   throws Exception

Description copied from interface: JPPFDriverAdminMBean

Get the active states of the nodes specified vith a NodeSelector.

Specified by:

getActiveState in interface JPPFDriverAdminMBean

Parameters:

selector - specifies for which nodes to retrieve the active states. If null, then NodeSelector.ALL_NODES will be used.

Returns:

a mmaping of node uuids to their active state.

Throws:

Exception - if any error occurs.

setActiveState

public void setActiveState(NodeSelector selector,
                  boolean active)
                    throws Exception

Description copied from interface: JPPFDriverAdminMBean

Set the active state of the specified nodes.

Specified by:

setActiveState in interface JPPFDriverAdminMBean

Parameters:

selector - determines which nodes will be activated or deactivated. If null, then NodeSelector.ALL_NODES will be used.

active - specifies the activer state to set on the selected nodes.

Throws:

Exception - if any error occurs.

setBroadcasting

public void setBroadcasting(boolean broadcasting)
                     throws Exception

Description copied from interface: JPPFDriverAdminMBean

Activate or deactivate the broadcasting of the driver's connection information. if the broadcast is already in the desired state, this method has no effect.

Specified by:

setBroadcasting in interface JPPFDriverAdminMBean

Parameters:

broadcasting - true to activate the broadcast, false to deactivate it.

Throws:

Exception - if any error occurs.

getBroadcasting

public boolean getBroadcasting()
                        throws Exception

Description copied from interface: JPPFDriverAdminMBean

Determine whether the driver is broadcasting or not.

Specified by:

getBroadcasting in interface JPPFDriverAdminMBean

Returns:

true if the broadcasting service is on, false if it is off.

Throws:

Exception - if any error occurs.

getNodeForwarder

public JPPFNodeForwardingMBean getNodeForwarder()
                                         throws Exception

This convenience method creates a proxy to the driver's mbean which forwards requests to its nodes. It is equivalent to calling the more cumbersome getProxy(JPPFNodeForwardingMBean.MBEAN_NAME, JPPFNodeForwardingMBean.class).

Returns:

an instance of JPPFNodeForwardingMBean.

Throws:

Exception - if a proxy could not be created for any reason.

Since:

4.2

getJobManager

public DriverJobManagementMBean getJobManager()
                                       throws Exception

This convenience method creates a proxy to the driver's mbean which manages and monitors jobs. It is equivalent to calling the more cumbersome getProxy(DriverJobManagementMBean.MBEAN_NAME, DriverJobManagementMBean.class).

Returns:

an instance of DriverJobManagementMBean.

Throws:

Exception - if a proxy could not be created for any reason.

Since:

4.2

getLoadBalancerPersistenceManagement

public LoadBalancerPersistenceManagement getLoadBalancerPersistenceManagement()
                                                                       throws Exception

This convenience method creates a proxy to the driver's mbean that manages the load-balancers persisted states. It is equivalent to calling the more cumbersome getProxy(LoadBalancerPersistenceManagerMBean.MBEAN_NAME, LoadBalancerPersistenceManagerMBean.class).

Returns:

an instance of PersistedJobsManagerMBean.

Throws:

Exception - if a proxy could not be created for any reason.

Since:

6.0

registerForwardingNotificationListener

public String registerForwardingNotificationListener(NodeSelector selector,
                                            String mBeanName,
                                            javax.management.NotificationListener listener,
                                            javax.management.NotificationFilter filter,
                                            Object handback)
                                              throws Exception

Register a notification listener which will receive notifications from from the specified MBean on the selected nodes.

Parameters:

selector - determines which nodes will be selected.

mBeanName - the name of the MBean from which to receive notificaztions from the selected nodes.

listener - the listener to register.

filter - the notification filter.

handback - the handback object.

Returns:

the id of the registered listener, to use with JMXDriverConnectionWrapper.unregisterForwardingNotificationListener(String).

Throws:

Exception - if any error occurs.

unregisterForwardingNotificationListener

public void unregisterForwardingNotificationListener(String listenerID)
                                              throws Exception

Register a notification listener which will receive notifications from from the specified MBean on the selected nodes.

Parameters:

listenerID - the id of a listener previously registered with JMXDriverConnectionWrapper.registerForwardingNotificationListener(NodeSelector,String,NotificationListener,NotificationFilter,Object).

Throws:

Exception - if the listener with this id was not found or if any other error occurss.

forwardInvoke

public Map<String,Object> forwardInvoke(NodeSelector selector,
                               String name,
                               String methodName,
                               Object[] params,
                               String[] signature)
                                 throws Exception

Invoke a method on the specified MBean of all nodes attached to the driver.

Parameters:

selector - a filter on the nodes attached tot he driver, determines the nodes to which this method applies.

name - the name of the MBean.

methodName - the name of the method to invoke.

params - the method parameter values.

signature - the types of the method parameters.

Returns:

a mapping of node uuids to the result of invoking the MBean method on the corresponding node. Each result may be an exception.
Additionally, each result may be null, in particular if the invoked method has a void return type.

Throws:

Exception - if the invocation failed.

forwardInvoke

public Map<String,Object> forwardInvoke(NodeSelector selector,
                               String name,
                               String methodName)
                                 throws Exception

Convenience method to invoke an MBean method that has no parameter.
This is equivalent to calling forwardInvoke(selector, name, methodName, (Object[]) null, (String[]) null).

Parameters:

selector - a filter on the nodes attached to the driver, determines the nodes to which this method applies.

name - the name of the node MBean to invoke.

methodName - the name of the method to invoke.

Returns:

a mapping of node uuids to the result of invoking the MBean method on the corresponding node. Each result may be an exception.
Additionally, each result may be null, in particular if the invoked method has a void return type.

Throws:

Exception - if the invocation failed.

forwardGetAttribute

public Map<String,Object> forwardGetAttribute(NodeSelector selector,
                                     String name,
                                     String attribute)
                                       throws Exception

Get the value of an attribute of the specified MBean for each specified node.

Parameters:

selector - a filter on the nodes attached tot he driver, determines the nodes to which this method applies.

name - the name of the MBean to invoke for each node.

attribute - the name of the MBean attribute to read.

Returns:

a mapping of node uuids to the result of getting the MBean attribute on the corresponding node. Each result may be an exception.

Throws:

Exception - if the invocation failed.

forwardSetAttribute

public Map<String,Object> forwardSetAttribute(NodeSelector selector,
                                     String name,
                                     String attribute,
                                     Object value)
                                       throws Exception

Set the value of an attribute of the specified MBean on the specified nodes attached to the driver.

Parameters:

selector - a filter on the nodes attached to the driver, determines the nodes to which this method applies.

name - the name of the MBean to invoke for each node.

attribute - the name of the MBean attribute to set.

value - the value to set on the attribute.

Returns:

a mapping of node uuids to an eventual exception resulting from setting the MBean attribute on the corresponding node. This map may be empty if no exception was raised.

Throws:

Exception - if the invocation failed.

getDiagnosticsProxy

public DiagnosticsMBean getDiagnosticsProxy()
                                     throws Exception

Description copied from class: JMXConnectionWrapper

Get a proxy to the diagnostics/JVM health MBean.

Overrides:

getDiagnosticsProxy in class JMXConnectionWrapper

Returns:

a DiagnosticsMBean instance.

Throws:

Exception - if any error occurs.