com.adventnet.adaptors.rmi
Class RMIAdaptor

java.lang.Object
  com.adventnet.adaptors.AbstractAdaptor
      com.adventnet.adaptors.rmi.RMIAdaptor

All Implemented Interfaces:

Adaptor, java.io.Serializable, java.util.EventListener, javax.management.DynamicMBean, javax.management.MBeanRegistration, javax.management.NotificationBroadcaster, javax.management.NotificationFilter, javax.management.NotificationListener

public class RMIAdaptor
extends AbstractAdaptor
implements javax.management.DynamicMBean, javax.management.NotificationListener, javax.management.NotificationFilter

This class acts as a JMX adaptor for RMI protocol.

It itself acts as a mbean for exposing the RMI properties. This class extends the SimpleAdaptor which provides the implementation of ServiceInfo interface and acts as the RMI server.

The port number of the service can be specified in the ObjectName with key-value pair as, port=1099(by default)

For example, to start the RMI server at 1150, you can specify the following object name:

DefaultDomain:type=com.adventnet.adaptors.rmi.RMIAdaptor,protocol=rmi,port=1150

See Also:

Serialized Form

Nested Class Summary

Nested classes/interfaces inherited from class com.adventnet.adaptors.AbstractAdaptor

AbstractAdaptor.ProcessNotification

Field Summary

java.rmi.registry.Registry

registry

Fields inherited from class com.adventnet.adaptors.AbstractAdaptor

notifications, port, processnotification, state

Constructor Summary

RMIAdaptor()
The NoArg constructor used to initialize the RMIAdaptor in forming the MBeanInfo and getting the reference of the MBeanServer using the MBeanServer.findJMXAgent(...) method.

Method Summary

void	addUser(com.adventnet.agent.security.UserContext userContext) Adds the users specified in the UserContext to the Authentication List of the Adaptor
void	bind() Binds the rmi server at the specified port
void	destroyAdaptor() Removes the RemoteMBeanServerImpl from the RMI runtime
void	enableAuthentication(boolean authenticate) Enables Authentication for the RMI Adaptor
void	enableAuthorisation(boolean authorise) Enables Authorisation for the RMI Adaptor
javax.management.ObjectName	getAdaptorObjectName() Returns the ObjectName of this adaptor with which it has been registered with the MBeanServer.
java.lang.Object	getAttribute(java.lang.String attribute) Gets the value of a specific attribute of this MBean.
javax.management.AttributeList	getAttributes(java.lang.String[] attributes) Enables the values of several attributes of this MBean.
javax.management.MBeanInfo	getMBeanInfo() This method discovers the attributes and operations this MBean exposes for management.
java.lang.String	getObjectName() Returns the ObjectName of this adaptor with which it has been registered with the MBeanServer.
java.lang.String	getPersistantName() Returns the name of the serialized file in which the User Context details are stored.
java.lang.String	getProtocol() Gets the protocol supported by this adaptor.
void	instantiateAdaptor() Instantiates the RMI Adaptor
java.lang.Object	invoke(java.lang.String actionName, java.lang.Object[] params, java.lang.String[] signature) Invokes an action on the original MBean associated with this MBean.
boolean	isNotificationEnabled(javax.management.Notification notification) Invoked before sending the specified notification to the listener
void	postDeregister() Allows this MBean to perform any operations needed after having been de-registered in the MBeanServer.
void	postRegister(java.lang.Boolean registrationDone) Allows this MBean to perform any operations needed after having been registered in the MBeanServer or after the registration has failed.
void	preDeregister() Allows this MBean to perform any operations it needs before being de-registered by the MBeanServer.
javax.management.ObjectName	preRegister(javax.management.MBeanServer server, javax.management.ObjectName name) This method is an implementation of MBeanRegistration interface.
void	processNotification(javax.management.Notification notification, java.lang.Object handback) Invoked when an JMX notification occurs.
void	removeUser(com.adventnet.agent.security.UserContext userContext) Removes the users specified in the UserContext from the Authentication List of the Adaptor
void	setAttribute(javax.management.Attribute attribute) Sets the value of a specific attribute of this MBean.
javax.management.AttributeList	setAttributes(javax.management.AttributeList attributes) Sets the values of several attributes of this MBean.
void	setPersistantName(java.lang.String fileName) Sets the name of the serialized file in which the User Context details are stored
void	setPort(java.lang.Integer port)
void	setSSLEnabled(boolean bool)
void	setSSLProps(java.util.Hashtable hash)
java.rmi.registry.Registry	startRegistry(int port) Starts the RMI Registry at the specified port.
void	unbind() Allows the service to get stopped.

Methods inherited from class com.adventnet.adaptors.AbstractAdaptor

addNotificationListener, changeState, getAdaptorVersion, getHost, getNotificationInfo, getPort, getState, getStateInString, handleNotification, isActive, isSecure, removeNotificationListener, setPort, startService, stopService

Methods inherited from class java.lang.Object

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

Methods inherited from interface javax.management.NotificationListener

handleNotification

Field Detail

registry

public java.rmi.registry.Registry registry

Constructor Detail

RMIAdaptor

public RMIAdaptor()

The NoArg constructor used to initialize the RMIAdaptor in forming the MBeanInfo and getting the reference of the MBeanServer using the MBeanServer.findJMXAgent(...) method.

See Also:

preRegister(MBeanServer, ObjectName);

Method Detail

setPort

public void setPort(java.lang.Integer port)
             throws java.lang.Exception

Throws:

java.lang.Exception

setSSLEnabled

public void setSSLEnabled(boolean bool)

setSSLProps

public void setSSLProps(java.util.Hashtable hash)

setPersistantName

public void setPersistantName(java.lang.String fileName)

Sets the name of the serialized file in which the User Context details are stored

Parameters:

fileName - The name of the file in which the User Context details are to be stored

getPersistantName

public java.lang.String getPersistantName()

Returns the name of the serialized file in which the User Context details are stored.

Returns:

The name of the serialized file in which the User Context details are stored

getMBeanInfo

public javax.management.MBeanInfo getMBeanInfo()

This method discovers the attributes and operations this MBean exposes for management.

Specified by:

getMBeanInfo in interface javax.management.DynamicMBean

Returns:

An instance of MBeanInfo allowing to retrieve all attributes and operations of this MBean.

getAttribute

public java.lang.Object getAttribute(java.lang.String attribute)
                              throws javax.management.AttributeNotFoundException,
                                     javax.management.MBeanException,
                                     javax.management.ReflectionException

Gets the value of a specific attribute of this MBean.

Specified by:

getAttribute in interface javax.management.DynamicMBean

Parameters:

attribute - A String specifying the name of the attribute to be retrieved.

Returns:

The value of the retrieved attribute.

Throws:

javax.management.AttributeNotFoundException - The specified attribute is not accessible in the MBean.

javax.management.MBeanException - The constructor of the MBean has thrown an exception

javax.management.ReflectionException - Wraps a ClassNotFoundException or a java.lang.Exception that occured trying to invoke the MBean's constructor.

getAttributes

public javax.management.AttributeList getAttributes(java.lang.String[] attributes)

Enables the values of several attributes of this MBean.

Specified by:

getAttributes in interface javax.management.DynamicMBean

Parameters:

attributes - A list of attributes to be retrieved.

Returns:

The value of the retrieved attributes as attributeList.

invoke

public java.lang.Object invoke(java.lang.String actionName,
                               java.lang.Object[] params,
                               java.lang.String[] signature)
                        throws javax.management.MBeanException,
                               javax.management.ReflectionException

Invokes an action on the original MBean associated with this MBean.

Specified by:

invoke in interface javax.management.DynamicMBean

Parameters:

actionName - The name of the action to be invoked.

params - An array containing the parameters to be set when the action is invoked

signature - An array containing the signature of the action. The class objects will be loaded using the same class loader as the one used for loading the MBean on which the action was invoked.

Returns:

The object returned by the action, which represents the result ofinvoking the action on the specified MBean.

Throws:

javax.management.MBeanException - The constructor of the MBean has thrown an exception

javax.management.ReflectionException - Wraps a ClassNotFoundException or a java.lang.Exception that occured trying to invoke the MBean's constructor.

setAttribute

public void setAttribute(javax.management.Attribute attribute)
                  throws javax.management.AttributeNotFoundException,
                         javax.management.InvalidAttributeValueException,
                         javax.management.MBeanException,
                         javax.management.ReflectionException

Sets the value of a specific attribute of this MBean.

Specified by:

setAttribute in interface javax.management.DynamicMBean

Parameters:

attribute - The identification of the attribute to be set and the value it is to be set to.

Throws:

javax.management.AttributeNotFoundException - The specified attribute is not accessible in the MBean.

javax.management.InvalidAttributeValueException - The specified value for the attribute is not valid.

javax.management.MBeanException - The constructor of the MBean has thrown an exception

javax.management.ReflectionException - Wraps a ClassNotFoundException or a java.lang.Exception that occured trying to invoke the MBean's constructor.

setAttributes

public javax.management.AttributeList setAttributes(javax.management.AttributeList attributes)

Sets the values of several attributes of this MBean.

Specified by:

setAttributes in interface javax.management.DynamicMBean

Parameters:

attributes - A list of attributes: The identification of the attributes to be set and the values they are to be set to.

Returns:

The list of attributes that were set, with their new values.

preRegister

public javax.management.ObjectName preRegister(javax.management.MBeanServer server,
                                               javax.management.ObjectName name)
                                        throws java.lang.Exception

This method is an implementation of MBeanRegistration interface. Allows this MBean to perform any operations it needs before being registered in the MBeanServer. If the name of the MBean is not specified, the MBean can provide a name for its registration. If any exception is raised, the MBean will not be registered with the MBeanServer.

This method is called by the MBeanServer before this mbean getting registered with the server. If the passed objectName is invalid, the returned objectName is taken as valid name to get registered with the server.

The service gets actually started only inside this method at the specified port mentioned in the key "port". If the key "port" is absent, then the service(RMI) gets started at the default port 1099. The rmiregistry gets created here. If suppose the port is already occupied, the server creation gets failed. If registry is started already in the same port, inorder to use it ,the already started registry should have the classpath to the rmi skeleton files.

Specified by:

preRegister in interface javax.management.MBeanRegistration

Overrides:

preRegister in class AbstractAdaptor

Parameters:

server - The MBeanServer in which the MBean will be registered.

name - The object name of the MBean.

Returns:

The name of the MBean registered.

Throws:

java.lang.Exception - This exception should be caught by the MBeanServer and re-thrown as an MBeanRegistrationException.

instantiateAdaptor

public void instantiateAdaptor()
                        throws java.lang.InstantiationException

Instantiates the RMI Adaptor

Specified by:

instantiateAdaptor in class AbstractAdaptor

Throws:

java.lang.InstantiationException

bind

public void bind()

Binds the rmi server at the specified port

Specified by:

bind in class AbstractAdaptor

startRegistry

public java.rmi.registry.Registry startRegistry(int port)
                                         throws java.rmi.RemoteException

Starts the RMI Registry at the specified port.

Parameters:

port - The port at which the RMI Registry has to be started

Throws:

java.rmi.RemoteException - when the

postRegister

public void postRegister(java.lang.Boolean registrationDone)

Allows this MBean to perform any operations needed after having been registered in the MBeanServer or after the registration has failed.

Specified by:

postRegister in interface javax.management.MBeanRegistration

Overrides:

postRegister in class AbstractAdaptor

Parameters:

registrationDone - Indicates whether or not the MBean has been successfully registered in the MBeanServer. The value false means that either the registration phase has failed.

preDeregister

public void preDeregister()
                   throws java.lang.Exception

Allows this MBean to perform any operations it needs before being de-registered by the MBeanServer.

Specified by:

preDeregister in interface javax.management.MBeanRegistration

Overrides:

preDeregister in class AbstractAdaptor

Throws:

java.lang.Exception - This exception should be caught by the MBeanServer and re-thrown as an MBeanRegistrationException.

postDeregister

public void postDeregister()

Allows this MBean to perform any operations needed after having been de-registered in the MBeanServer.

Specified by:

postDeregister in interface javax.management.MBeanRegistration

Overrides:

postDeregister in class AbstractAdaptor

unbind

public void unbind()

Allows the service to get stopped.

Specified by:

unbind in class AbstractAdaptor

getAdaptorObjectName

public javax.management.ObjectName getAdaptorObjectName()

Returns the ObjectName of this adaptor with which it has been registered with the MBeanServer.

Specified by:

getAdaptorObjectName in interface Adaptor

Specified by:

getAdaptorObjectName in class AbstractAdaptor

Returns:

the ObjectName

getObjectName

public java.lang.String getObjectName()

Returns the ObjectName of this adaptor with which it has been registered with the MBeanServer.

Returns:

the ObjectName

getProtocol

public java.lang.String getProtocol()

Gets the protocol supported by this adaptor.

Specified by:

getProtocol in interface Adaptor

Specified by:

getProtocol in class AbstractAdaptor

Returns:

The protocol supported by this adaptor.

enableAuthentication

public void enableAuthentication(boolean authenticate)

Enables Authentication for the RMI Adaptor

Specified by:

enableAuthentication in interface Adaptor

Specified by:

enableAuthentication in class AbstractAdaptor

Parameters:

authenticate - Enables Authentication if the value is true

enableAuthorisation

public void enableAuthorisation(boolean authorise)

Enables Authorisation for the RMI Adaptor

Specified by:

enableAuthorisation in interface Adaptor

Specified by:

enableAuthorisation in class AbstractAdaptor

Parameters:

authorise - Enables Authentication if the value is true

addUser

public void addUser(com.adventnet.agent.security.UserContext userContext)

Adds the users specified in the UserContext to the Authentication List of the Adaptor

Parameters:

userContext - The UserContext which has to be added

removeUser

public void removeUser(com.adventnet.agent.security.UserContext userContext)

Removes the users specified in the UserContext from the Authentication List of the Adaptor

Parameters:

userContext - The UserContext which has to be removed

destroyAdaptor

public void destroyAdaptor()

Removes the RemoteMBeanServerImpl from the RMI runtime

Specified by:

destroyAdaptor in class AbstractAdaptor

See Also:

RemoteMBeanServerImpl

isNotificationEnabled

public boolean isNotificationEnabled(javax.management.Notification notification)

Invoked before sending the specified notification to the listener

Specified by:

isNotificationEnabled in interface javax.management.NotificationFilter

Parameters:

notification - - The notification to be sent.

Returns:

True if the notification has to be sent to the listener, false otherwise

processNotification

public void processNotification(javax.management.Notification notification,
                                java.lang.Object handback)

Invoked when an JMX notification occurs.

Overrides:

processNotification in class AbstractAdaptor

Parameters:

notification - - The notification.

handback - - An opaque object which helps the listener to associate information regarding the MBean emitter. This object was passed to the MBean during the addListener call and resend, without modification, to the listener. The MBean object should to use or modify the object.