/*
* @(#)MBeanServerInterceptor.java 1.22 05/12/30
*
* Copyright 2006 Sun Microsystems, Inc. All rights reserved.
* SUN PROPRIETARY/CONFIDENTIAL. Use is subject to license terms.
*/
package com.sun.jmx.interceptor;
import java.util.Set;
// RI import
import javax.management.DynamicMBean;
import javax.management.AttributeNotFoundException;
import javax.management.MBeanException;
import javax.management.ReflectionException;
import javax.management.MBeanAttributeInfo;
import javax.management.MBeanInfo;
import javax.management.QueryExp;
import javax.management.NotificationListener;
import javax.management.NotificationFilter;
import javax.management.ListenerNotFoundException;
import javax.management.IntrospectionException;
import javax.management.OperationsException;
import javax.management.MBeanNotificationInfo;
import javax.management.JMRuntimeException;
import javax.management.InstanceNotFoundException;
import javax.management.NotCompliantMBeanException;
import javax.management.MBeanRegistrationException;
import javax.management.InstanceAlreadyExistsException;
import javax.management.InvalidAttributeValueException;
import javax.management.ObjectName;
import javax.management.ObjectInstance;
import javax.management.Attribute;
import javax.management.AttributeList;
import javax.management.RuntimeOperationsException;
import javax.management.MBeanServerConnection;
import javax.management.MBeanServerDelegate;
import javax.management.loading.ClassLoaderRepository;
/**
* <p>This interface specifies the behavior to be implemented by an
* MBean Server Interceptor. An MBean Server Interceptor has
* essentially the same interface as an MBean Server. An MBean Server
* forwards received requests to its default interceptor, which may
* handle them itself or forward them to other interceptors. The
* default interceptor may be changed via the {@link
* com.sun.jmx.mbeanserver.SunJmxMBeanServer#setMBeanServerInterceptor}
* method.</p>
*
* <p>The initial default interceptor provides the standard MBean
* Server behavior. It handles a collection of named MBeans, each
* represented by a Java object. A replacement default interceptor
* may build on this behavior, for instance by adding logging or
* security checks, before forwarding requests to the initial default
* interceptor. Or, it may route each request to one of a number of
* sub-interceptors, for instance based on the {@link ObjectName} in
* the request.</p>
*
* <p>An interceptor, default or not, need not implement MBeans as
* Java objects, in the way that the initial default interceptor does.
* It may instead implement <em>virtual MBeans</em>, which do not
* exist as Java objects when they are not in use. For example, these
* MBeans could be implemented by forwarding requests to a database,
* or to a remote MBean server, or by performing system calls to query
* or modify system resources.</p>
*
* @since 1.5
*/
public interface MBeanServerInterceptor extends MBeanServerConnection {
/**
* Instantiates and registers an MBean in the MBean server. The
* MBean server will use its {@link
* javax.management.loading.ClassLoaderRepository Default Loader
* Repository} to load the class of the MBean. An object name is
* associated to the MBean. If the object name given is null, the
* MBean must provide its own name by implementing the {@link
* javax.management.MBeanRegistration MBeanRegistration} interface
* and returning the name from the {@link
* javax.management.MBeanRegistration#preRegister preRegister} method.
*
* @param className The class name of the MBean to be instantiated.
* @param name The object name of the MBean. May be null.
* @param params An array containing the parameters of the
* constructor to be invoked.
* @param signature An array containing the signature of the
* constructor to be invoked.
*
* @return An <CODE>ObjectInstance</CODE>, containing the
* <CODE>ObjectName</CODE> and the Java class name of the newly
* instantiated MBean.
*
* @exception ReflectionException Wraps a
* <CODE>java.lang.ClassNotFoundException</CODE> or a
* <CODE>java.lang.Exception</CODE> that occurred when trying to
* invoke the MBean's constructor.
* @exception InstanceAlreadyExistsException The MBean is already
* under the control of the MBean server.
* @exception MBeanRegistrationException The
* <CODE>preRegister</CODE> (<CODE>MBeanRegistration</CODE>
* interface) method of the MBean has thrown an exception. The
* MBean will not be registered.
* @exception MBeanException The constructor of the MBean has
* thrown an exception
* @exception RuntimeOperationsException Wraps a
* <CODE>java.lang.IllegalArgumentException</CODE>: The className
* passed in parameter is null, the <CODE>ObjectName</CODE> passed
* in parameter contains a pattern or no <CODE>ObjectName</CODE>
* is specified for the MBean.
*/
public ObjectInstance createMBean(String className, ObjectName name,
Object params[], String signature[])
throws ReflectionException, InstanceAlreadyExistsException,
MBeanRegistrationException, MBeanException,
NotCompliantMBeanException;
/**
* Instantiates and registers an MBean in the MBean server. The
* class loader to be used is identified by its object name. An
* object name is associated to the MBean. If the object name of
* the loader is not specified, the ClassLoader that loaded the
* MBean server will be used. If the MBean object name given is
* null, the MBean must provide its own name by implementing the
* {@link javax.management.MBeanRegistration MBeanRegistration}
* interface and returning the name from the {@link
* javax.management.MBeanRegistration#preRegister preRegister} method.
*
* @param className The class name of the MBean to be instantiated.
* @param name The object name of the MBean. May be null.
* @param params An array containing the parameters of the
* constructor to be invoked.
* @param signature An array containing the signature of the
* constructor to be invoked.
* @param loaderName The object name of the class loader to be used.
*
* @return An <CODE>ObjectInstance</CODE>, containing the
* <CODE>ObjectName</CODE> and the Java class name of the newly
* instantiated MBean.
*
* @exception ReflectionException Wraps a
* <CODE>java.lang.ClassNotFoundException</CODE> or a
* <CODE>java.lang.Exception</CODE> that occurred when trying to
* invoke the MBean's constructor.
* @exception InstanceAlreadyExistsException The MBean is already
* under the control of the MBean server.
* @exception MBeanRegistrationException The
* <CODE>preRegister</CODE> (<CODE>MBeanRegistration</CODE>
* interface) method of the MBean has thrown an exception. The
* MBean will not be registered.
* @exception MBeanException The constructor of the MBean has
* thrown an exception
* @exception InstanceNotFoundException The specified class loader
* is not registered in the MBean server.
* @exception RuntimeOperationsException Wraps a
* <CODE>java.lang.IllegalArgumentException</CODE>: The className
* passed in parameter is null, the <CODE>ObjectName</CODE> passed
* in parameter contains a pattern or no <CODE>ObjectName</CODE>
* is specified for the MBean.
*
*/
public ObjectInstance createMBean(String className, ObjectName name,
ObjectName loaderName, Object params[],
String signature[])
throws ReflectionException, InstanceAlreadyExistsException,
MBeanRegistrationException, MBeanException,
NotCompliantMBeanException, InstanceNotFoundException;
/**
* Registers a pre-existing object as an MBean with the MBean
* server. If the object name given is null, the MBean must
* provide its own name by implementing the {@link
* javax.management.MBeanRegistration MBeanRegistration} interface
* and returning the name from the {@link
* javax.management.MBeanRegistration#preRegister preRegister} method.
*
* @param object The MBean to be registered as an MBean.
* @param name The object name of the MBean. May be null.
*
* @return The <CODE>ObjectInstance</CODE> for the MBean that has
* been registered.
*
* @exception InstanceAlreadyExistsException The MBean is already
* under the control of the MBean server.
* @exception MBeanRegistrationException The
* <CODE>preRegister</CODE> (<CODE>MBeanRegistration</CODE>
* interface) method of the MBean has thrown an exception. The
* MBean will not be registered.
* @exception NotCompliantMBeanException This object is not a JMX
* compliant MBean
* @exception RuntimeOperationsException Wraps a
* <CODE>java.lang.IllegalArgumentException</CODE>: The object
* passed in parameter is null or no object name is specified.
*/
public ObjectInstance registerMBean(Object object, ObjectName name)
throws InstanceAlreadyExistsException, MBeanRegistrationException,
NotCompliantMBeanException;
/**
* Unregisters an MBean from the MBean server. The MBean is
* identified by its object name. Once the method has been
* invoked, the MBean may no longer be accessed by its object
* name.
*
* @param name The object name of the MBean to be unregistered.
*
* @exception InstanceNotFoundException The MBean specified is not
* registered in the MBean server.
* @exception MBeanRegistrationException The preDeregister
* ((<CODE>MBeanRegistration</CODE> interface) method of the MBean
* has thrown an exception.
* @exception RuntimeOperationsException Wraps a
* <CODE>java.lang.IllegalArgumentException</CODE>: The object
* name in parameter is null or the MBean you are when trying to
* unregister is the {@link javax.management.MBeanServerDelegate
* MBeanServerDelegate} MBean.
*
*/
public void unregisterMBean(ObjectName name)
throws InstanceNotFoundException, MBeanRegistrationException;
/**
* Gets the <CODE>ObjectInstance</CODE> for a given MBean
* registered with the MBean server.
*
* @param name The object name of the MBean.
*
* @return The <CODE>ObjectInstance</CODE> associated to the MBean
* specified by <VAR>name</VAR>.
*
* @exception InstanceNotFoundException The MBean specified is not
* registered in the MBean server.
*/
public ObjectInstance getObjectInstance(ObjectName name)
throws InstanceNotFoundException;
/**
* Gets MBeans controlled by the MBean server. This method allows
* any of the following to be obtained: All MBeans, a set of
* MBeans specified by pattern matching on the
* <CODE>ObjectName</CODE> and/or a Query expression, a specific
* MBean. When the object name is null or no domain and key
* properties are specified, all objects are to be selected (and
* filtered if a query is specified). It returns the set of
* <CODE>ObjectInstance</CODE> objects (containing the
* <CODE>ObjectName</CODE> and the Java Class name) for the
* selected MBeans.
*
* @param name The object name pattern identifying the MBeans to
* be retrieved. If null or no domain and key properties are
* specified, all the MBeans registered will be retrieved.
* @param query The query expression to be applied for selecting
* MBeans. If null no query expression will be applied for
* selecting MBeans.
*
* @return A set containing the <CODE>ObjectInstance</CODE>
* objects for the selected MBeans. If no MBean satisfies the
* query an empty list is returned.
*/
public Set<ObjectInstance> queryMBeans(ObjectName name, QueryExp query);
/**
* Gets the names of MBeans controlled by the MBean server. This
* method enables any of the following to be obtained: The names
* of all MBeans, the names of a set of MBeans specified by
* pattern matching on the <CODE>ObjectName</CODE> and/or a Query
* expression, a specific MBean name (equivalent to testing
* whether an MBean is registered). When the object name is null
* or no domain and key properties are specified, all objects are
* selected (and filtered if a query is specified). It returns the
* set of ObjectNames for the MBeans selected.
*
* @param name The object name pattern identifying the MBean names
* to be retrieved. If null oror no domain and key properties are
* specified, the name of all registered MBeans will be retrieved.
* @param query The query expression to be applied for selecting
* MBeans. If null no query expression will be applied for
* selecting MBeans.
*
* @return A set containing the ObjectNames for the MBeans
* selected. If no MBean satisfies the query, an empty list is
* returned.
*/
public Set<ObjectName> queryNames(ObjectName name, QueryExp query);
/**
* Checks whether an MBean, identified by its object name, is
* already registered with the MBean server.
*
* @param name The object name of the MBean to be checked.
*
* @return True if the MBean is already registered in the MBean
* server, false otherwise.
*
* @exception RuntimeOperationsException Wraps a
* <CODE>java.lang.IllegalArgumentException</CODE>: The object
* name in parameter is null.
*/
public boolean isRegistered(ObjectName name);
/**
* Returns the number of MBeans registered in the MBean server.
*/
public Integer getMBeanCount();
/**
* Gets the value of a specific attribute of a named MBean. The MBean
* is identified by its object name.
*
* @param name The object name of the MBean from which the
* attribute is to be retrieved.
* @param attribute A String specifying the name of the attribute
* to be retrieved.
*
* @return The value of the retrieved attribute.
*
* @exception AttributeNotFoundException The attribute specified
* is not accessible in the MBean.
* @exception MBeanException Wraps an exception thrown by the
* MBean's getter.
* @exception InstanceNotFoundException The MBean specified is not
* registered in the MBean server.
* @exception ReflectionException Wraps a
* <CODE>java.lang.Exception</CODE> thrown when trying to invoke
* the setter.
* @exception RuntimeOperationsException Wraps a
* <CODE>java.lang.IllegalArgumentException</CODE>: The object
* name in parameter is null or the attribute in parameter is
* null.
*/
public Object getAttribute(ObjectName name, String attribute)
throws MBeanException, AttributeNotFoundException,
InstanceNotFoundException, ReflectionException;
/**
* Enables the values of several attributes of a named MBean. The MBean
* is identified by its object name.
*
* @param name The object name of the MBean from which the
* attributes are retrieved.
* @param attributes A list of the attributes to be retrieved.
*
* @return The list of the retrieved attributes.
*
* @exception InstanceNotFoundException The MBean specified is not
* registered in the MBean server.
* @exception ReflectionException An exception occurred when
* trying to invoke the getAttributes method of a Dynamic MBean.
* @exception RuntimeOperationsException Wrap a
* <CODE>java.lang.IllegalArgumentException</CODE>: The object
* name in parameter is null or attributes in parameter is null.
*/
public AttributeList getAttributes(ObjectName name, String[] attributes)
throws InstanceNotFoundException, ReflectionException;
/**
* Sets the value of a specific attribute of a named MBean. The MBean
* is identified by its object name.
*
* @param name The name of the MBean within which the attribute is
* to be set.
* @param attribute The identification of the attribute to be set
* and the value it is to be set to.
*
* @exception InstanceNotFoundException The MBean specified is not
* registered in the MBean server.
* @exception AttributeNotFoundException The attribute specified
* is not accessible in the MBean.
* @exception InvalidAttributeValueException The value specified
* for the attribute is not valid.
* @exception MBeanException Wraps an exception thrown by the
* MBean's setter.
* @exception ReflectionException Wraps a
* <CODE>java.lang.Exception</CODE> thrown when trying to invoke
* the setter.
* @exception RuntimeOperationsException Wraps a
* <CODE>java.lang.IllegalArgumentException</CODE>: The object
* name in parameter is null or the attribute in parameter is
* null.
*/
public void setAttribute(ObjectName name, Attribute attribute)
throws InstanceNotFoundException, AttributeNotFoundException,
InvalidAttributeValueException, MBeanException,
ReflectionException;
/**
* Sets the values of several attributes of a named MBean. The MBean is
* identified by its object name.
*
* @param name The object name of the MBean within which the
* attributes are to be set.
* @param attributes A list of attributes: The identification of
* the attributes to be set and the values they are to be set to.
*
* @return The list of attributes that were set, with their new
* values.
*
* @exception InstanceNotFoundException The MBean specified is not
* registered in the MBean server.
* @exception ReflectionException An exception occurred when
* trying to invoke the getAttributes method of a Dynamic MBean.
* @exception RuntimeOperationsException Wraps a
* <CODE>java.lang.IllegalArgumentException</CODE>: The object
* name in parameter is null or attributes in parameter is null.
*/
public AttributeList setAttributes(ObjectName name,
AttributeList attributes)
throws InstanceNotFoundException, ReflectionException;
/**
* Invokes an operation on an MBean.
*
* @param name The object name of the MBean on which the method is
* to be invoked.
* @param operationName The name of the operation to be invoked.
* @param params An array containing the parameters to be set when
* the operation is invoked
* @param signature An array containing the signature of the
* operation. The class objects will be loaded using the same
* class loader as the one used for loading the MBean on which the
* operation was invoked.
*
* @return The object returned by the operation, which represents
* the result ofinvoking the operation on the MBean specified.
*
* @exception InstanceNotFoundException The MBean specified is not
* registered in the MBean server.
* @exception MBeanException Wraps an exception thrown by the
* MBean's invoked method.
* @exception ReflectionException Wraps a
* <CODE>java.lang.Exception</CODE> thrown while trying to invoke
* the method.
*/
public Object invoke(ObjectName name, String operationName,
Object params[], String signature[])
throws InstanceNotFoundException, MBeanException,
ReflectionException;
/**
* Returns the default domain used for naming the MBean.
* The default domain name is used as the domain part in the ObjectName
* of MBeans if no domain is specified by the user.
*/
public String getDefaultDomain();
/**
* Returns the list of domains in which any MBean is currently
* registered.
*/
public String[] getDomains();
/**
* <p>Adds a listener to a registered MBean.</p>
*
* <P> A notification emitted by an MBean will be forwarded by the
* MBeanServer to the listener. If the source of the notification
* is a reference to an MBean object, the MBean server will replace it
* by that MBean's ObjectName. Otherwise the source is unchanged.
*
* @param name The name of the MBean on which the listener should
* be added.
* @param listener The listener object which will handle the
* notifications emitted by the registered MBean.
* @param filter The filter object. If filter is null, no
* filtering will be performed before handling notifications.
* @param handback The context to be sent to the listener when a
* notification is emitted.
*
* @exception InstanceNotFoundException The MBean name provided
* does not match any of the registered MBeans.
*/
public void addNotificationListener(ObjectName name,
NotificationListener listener,
NotificationFilter filter,
Object handback)
throws InstanceNotFoundException;
/**
* <p>Adds a listener to a registered MBean.</p>
*
* <p>A notification emitted by an MBean will be forwarded by the
* MBeanServer to the listener. If the source of the notification
* is a reference to an MBean object, the MBean server will
* replace it by that MBean's ObjectName. Otherwise the source is
* unchanged.</p>
*
* <p>The listener object that receives notifications is the one
* that is registered with the given name at the time this method
* is called. Even if it is subsequently unregistered, it will
* continue to receive notifications.</p>
*
* @param name The name of the MBean on which the listener should
* be added.
* @param listener The object name of the listener which will
* handle the notifications emitted by the registered MBean.
* @param filter The filter object. If filter is null, no
* filtering will be performed before handling notifications.
* @param handback The context to be sent to the listener when a
* notification is emitted.
*
* @exception InstanceNotFoundException The MBean name of the
* notification listener or of the notification broadcaster does
* not match any of the registered MBeans.
* @exception RuntimeOperationsException Wraps an {@link
* IllegalArgumentException}. The MBean named by
* <code>listener</code> exists but does not implement the {@link
* NotificationListener} interface.
* @exception IOException A communication problem occurred when
* talking to the MBean server.
*/
public void addNotificationListener(ObjectName name,
ObjectName listener,
NotificationFilter filter,
Object handback)
throws InstanceNotFoundException;
/**
* Removes a listener from a registered MBean.
*
* <P> If the listener is registered more than once, perhaps with
* different filters or callbacks, this method will remove all
* those registrations.
*
* @param name The name of the MBean on which the listener should
* be removed.
* @param listener The object name of the listener to be removed.
*
* @exception InstanceNotFoundException The MBean name provided
* does not match any of the registered MBeans.
* @exception ListenerNotFoundException The listener is not
* registered in the MBean.
*/
public void removeNotificationListener(ObjectName name,
ObjectName listener)
throws InstanceNotFoundException, ListenerNotFoundException;
/**
* <p>Removes a listener from a registered MBean.</p>
*
* <p>The MBean must have a listener that exactly matches the
* given <code>listener</code>, <code>filter</code>, and
* <code>handback</code> parameters. If there is more than one
* such listener, only one is removed.</p>
*
* <p>The <code>filter</code> and <code>handback</code> parameters
* may be null if and only if they are null in a listener to be
* removed.</p>
*
* @param name The name of the MBean on which the listener should
* be removed.
* @param listener A listener that was previously added to this
* MBean.
* @param filter The filter that was specified when the listener
* was added.
* @param handback The handback that was specified when the
* listener was added.
*
* @exception InstanceNotFoundException The MBean name provided
* does not match any of the registered MBeans.
* @exception ListenerNotFoundException The listener is not
* registered in the MBean, or it is not registered with the given
* filter and handback.
*/
public void removeNotificationListener(ObjectName name,
ObjectName listener,
NotificationFilter filter,
Object handback)
throws InstanceNotFoundException, ListenerNotFoundException;
/**
* <p>Removes a listener from a registered MBean.</p>
*
* <P> If the listener is registered more than once, perhaps with
* different filters or callbacks, this method will remove all
* those registrations.
*
* @param name The name of the MBean on which the listener should
* be removed.
* @param listener The listener object which will handle the
* notifications emitted by the registered MBean.
*
* @exception InstanceNotFoundException The MBean name provided
* does not match any of the registered MBeans.
* @exception ListenerNotFoundException The listener is not
* registered in the MBean.
*/
public void removeNotificationListener(ObjectName name,
NotificationListener listener)
throws InstanceNotFoundException, ListenerNotFoundException;
/**
* <p>Removes a listener from a registered MBean.</p>
*
* <p>The MBean must have a listener that exactly matches the
* given <code>listener</code>, <code>filter</code>, and
* <code>handback</code> parameters. If there is more than one
* such listener, only one is removed.</p>
*
* <p>The <code>filter</code> and <code>handback</code> parameters
* may be null if and only if they are null in a listener to be
* removed.</p>
*
* @param name The name of the MBean on which the listener should
* be removed.
* @param listener A listener that was previously added to this
* MBean.
* @param filter The filter that was specified when the listener
* was added.
* @param handback The handback that was specified when the
* listener was added.
*
* @exception InstanceNotFoundException The MBean name provided
* does not match any of the registered MBeans.
* @exception ListenerNotFoundException The listener is not
* registered in the MBean, or it is not registered with the given
* filter and handback.
*/
public void removeNotificationListener(ObjectName name,
NotificationListener listener,
NotificationFilter filter,
Object handback)
throws InstanceNotFoundException, ListenerNotFoundException;
/**
* This method discovers the attributes and operations that an
* MBean exposes for management.
*
* @param name The name of the MBean to analyze
*
* @return An instance of <CODE>MBeanInfo</CODE> allowing the
* retrieval of all attributes and operations of this MBean.
*
* @exception IntrospectionException An exception occurred during
* introspection.
* @exception InstanceNotFoundException The MBean specified was
* not found.
* @exception ReflectionException An exception occurred when
* trying to invoke the getMBeanInfo of a Dynamic MBean.
*/
public MBeanInfo getMBeanInfo(ObjectName name)
throws InstanceNotFoundException, IntrospectionException,
ReflectionException;
/**
* Returns true if the MBean specified is an instance of the
* specified class, false otherwise.
*
* @param name The <CODE>ObjectName</CODE> of the MBean.
* @param className The name of the class.
*
* @return true if the MBean specified is an instance of the
* specified class, false otherwise.
*
* @exception InstanceNotFoundException The MBean specified is not
* registered in the MBean server.
*/
public boolean isInstanceOf(ObjectName name, String className)
throws InstanceNotFoundException;
/**
* <p>Return the {@link java.lang.ClassLoader} that was used for
* loading the class of the named MBean.
* @param mbeanName The ObjectName of the MBean.
* @return The ClassLoader used for that MBean.
* @exception InstanceNotFoundException if the named MBean is not found.
*/
public ClassLoader getClassLoaderFor(ObjectName mbeanName)
throws InstanceNotFoundException;
/**
* <p>Return the named {@link java.lang.ClassLoader}.
* @param loaderName The ObjectName of the ClassLoader.
* @return The named ClassLoader.
* @exception InstanceNotFoundException if the named ClassLoader is
* not found.
*/
public ClassLoader getClassLoader(ObjectName loaderName)
throws InstanceNotFoundException;
}
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