org.glassfish.gmbal

Interface ManagedObjectManager

All Superinterfaces:

AutoCloseable, Closeable

All Known Subinterfaces:

ManagedObjectManagerInternal

All Known Implementing Classes:

ManagedObjectManagerImpl

public interface ManagedObjectManager
extends Closeable

An interface used to managed Open MBeans created from annotated objects. This is mostly a facade over MBeanServer. Note that certain methods must be called in the correct order:

1. Methods suspendJMXRegistration, resumeJMXRegistration, getDomain, getMBeanServer, getResourceBundle, setRuntimeDebug, setRegistrationDebugLevel, setTypelibDebug, and close may be called at any time.
2. All calls to addAnnotation, stripPrefix, and stripPackageName must occur before any call to a createRoot method.
3. All of the register and registerAtRoot methods and unregister, getObject, getObjectName, and dumpSkeleton may only be called after a createRoot method is called.
4. Only one call to a createRoot method is permitted on any ManagedObjectManager.
5. A call to close returns the MOM to the pre-createRoot state.

If these constraints are violated, an IllegalStateException is thrown.

Nested Class Summary

Nested Classes

Modifier and Type	Interface and Description
static class	ManagedObjectManager.RegistrationDebugLevel DebugLevel used to control how much debug info is printed for registration of objects.

Method Summary

Methods

Modifier and Type	Method and Description
void	addAnnotation(AnnotatedElement element, Annotation annotation) Method to add an annotation to an element that cannot be modified.
void	addInheritedAnnotations(Class<?> cls) Add all annotations for this class as if they were declared on the inheritance parent(s) of the class (immediate superclass for a class, all immediate superinterfaces for an interface).
GmbalMBean	createRoot() Create a default root MBean.
GmbalMBean	createRoot(Object root) Create a root MBean from root, which much have a method with the
GmbalMBean	createRoot(Object root, String name) Create a root MBean from root with the given name.
String	dumpSkeleton(Object obj) Dump the skeleton used in the implementation of the MBean for obj.
AMXClient	getAMXClient(Object obj) Get an AMXClient instance for the object obj, if obj is registered as an MBean in this mom.
String	getDomain() Return the domain name that was used when this ManagedObjectManager was created.
MBeanServer	getMBeanServer() Get the current MBeanServer.
Object	getObject(ObjectName oname) Get the Object that was registered with the given ObjectName.
ObjectName	getObjectName(Object obj) Get the ObjectName for the given object (which must have been registered via a register call).
org.glassfish.pfl.tf.timer.spi.ObjectRegistrationManager	getObjectRegistrationManager() Return an ObjectRegistrationManager as required in the pfl timer services.
ResourceBundle	getResourceBundle() Get the resource bundle (if any) set by setResourceBundle.
Object	getRoot() Return the root of this ManagedObjectManager.
boolean	isManagedObject(Object obj) Return true if object is assignment compatible with a class or interface that has an @ManagedObject annotation, otherwise false.
GmbalMBean	register(Object parent, Object obj) Same as register( parent, obj, name ), but here the name is derived from an @NameValue annotation.
GmbalMBean	register(Object parent, Object obj, String name) Construct an Open Mean for obj according to its annotations, and register it with domain getDomain() and the appropriate ObjectName.
GmbalMBean	registerAtRoot(Object obj) Same as registerAtRoot( Object, String ), but here the name is derived from an @ObjectKeyName annotation.
GmbalMBean	registerAtRoot(Object obj, String name) Registers the MBean for obj at the root MBean for the ObjectManager, using the given name.
void	resumeJMXRegistration() Decrements the suspend counter, if the counter is greater than 0.
void	setJMXRegistrationDebug(boolean flag) Set debugging for JMX registrations.
void	setMBeanServer(MBeanServer server) Set the MBeanServer to which all MBeans using this interface are published.
void	setRegistrationDebug(ManagedObjectManager.RegistrationDebugLevel level) Print debug output to System.out.
void	setResourceBundle(ResourceBundle rb) Set the ResourceBundle to use for getting localized descriptions.
void	setRuntimeDebug(boolean flag) Enable generation of debug log at INFO level for runtime MBean operations to the org.glassfish.gmbal.impl logger.
void	setTypelibDebug(int level) Enabled generation of debug log for type evaluator debugging.
void	stripPackagePrefix() Change the default type name algorithm so that if nothing else applies, the entire package prefix is stripped form the Class name.
void	stripPrefix(String... str) Add a type prefix to strip from type names, to shorten the names for a better presentation to the user.
void	suppressDuplicateRootReport(boolean suppressReport) Suppress reporting of a duplicate root name.
void	suspendJMXRegistration() If called, no MBeans created after this call will be registered with the JMX MBeanServer until resumeJMXRegistration is called.
void	unregister(Object obj) Unregister the Open MBean corresponding to obj from the mbean server.

Methods inherited from interface java.io.Closeable

close

Method Detail

suspendJMXRegistration

void suspendJMXRegistration()

If called, no MBeans created after this call will be registered with the JMX MBeanServer until resumeJMXRegistration is called. Each call increments a counter, so that nested and overlapping calls from multiple threads work correctly. May be called at any time.

resumeJMXRegistration

void resumeJMXRegistration()

Decrements the suspend counter, if the counter is greater than 0. When the counter goes to zero, it causes all MBeans created since a previous call to suspendJMXRegistration incremented the counter from 0 to 1 to be registered with the JMX MBeanServer. After this call, all new MBean registration calls to the JMX MBeanServer happen within the register call. May be called at any time.

isManagedObject

boolean isManagedObject(Object obj)

Return true if object is assignment compatible with a class or interface that has an @ManagedObject annotation, otherwise false. Only such objects may be registered to create MBeans. May be called at any time.

createRoot

GmbalMBean createRoot()

Create a default root MBean. One of the createRoot methods must be called before any of the registration methods may be called. Only one call to a createRoot method is permitted after an ManagedObjectManager is created.

Returns:

A default root MBean which supports only the AMX attributes.

Throws:

IllegalStateException - if called after a call to any createRoot method.

createRoot

GmbalMBean createRoot(Object root)

Create a root MBean from root, which much have a method with the

Parameters:

root - The Java object to be used to construct the root.

Returns:

The newly constructed MBean.

Throws:

IllegalStateException - if called after a call to any createRoot method.

createRoot

GmbalMBean createRoot(Object root,
                    String name)

Create a root MBean from root with the given name. One of the createRoot methods must be called before any of the registration methods may be called. Only one call to createRoot is permitted after an ManagedObjectManager is created.

Parameters:

root - The Java object to be used to construct the root.

name - The ObjectName name field to be used in the ObjectName of the MBean constructed from root.

Returns:

The newly constructed MBean.

Throws:

IllegalStateException - if called after a call to any createRoot method.

getRoot

Object getRoot()

Return the root of this ManagedObjectManager. May be called at any time.

Returns:

the root constructed in a createRoot operation, or null if called before a createRoot call.

register

GmbalMBean register(Object parent,
                  Object obj,
                  String name)

Construct an Open Mean for obj according to its annotations, and register it with domain getDomain() and the appropriate ObjectName. The MBeanServer from setMBeanServer (or its default) is used. Here parent is considered to contain obj, and this containment is represented by the construction of the ObjectName following the AMX specification for ObjectNames.

The MBeanInfo for the result is actually ModelMBeanInfo, and may contain extra metadata as defined using annotations defined with the

Parameters:

parent - The parent object that contains obj.

obj - The managed object we are registering.

name - The name to use for registering this object.

Returns:

The MBean constructed from obj.

Throws:

IllegalStateException - if called before a createRoot method is called successfully.

register

GmbalMBean register(Object parent,
                  Object obj)

Same as register( parent, obj, name ), but here the name is derived from an @NameValue annotation.

This version of register should also be used to register singletons.

Parameters:

parent - The parent object that contains obj.

obj - The managed object we are registering.

Returns:

The MBean constructed from obj.

Throws:

IllegalStateException - if called before a createRoot method is called successfully.

registerAtRoot

GmbalMBean registerAtRoot(Object obj,
                        String name)

Registers the MBean for obj at the root MBean for the ObjectManager, using the given name. Exactly the same as mom.register( mom.getRoot(), obj, name ).

Must be called after a successful createRoot call.

This version of register should not be used to register singletons.

Parameters:

obj - The object for which we construct and register an MBean.

name - The name of the MBean.

Returns:

The MBean constructed from obj.

Throws:

IllegalStateException - if called before a createRoot method is called successfully.

registerAtRoot

GmbalMBean registerAtRoot(Object obj)

Same as registerAtRoot( Object, String ), but here the name is derived from an @ObjectKeyName annotation. Exactly the same as mom.register( mom.getRoot(), obj ).

This version of register should also be used to register singletons.

Parameters:

obj - The managed object we are registering.

Returns:

The MBean constructed from obj.

Throws:

IllegalStateException - if called before a createRoot method is called successfully.

unregister

void unregister(Object obj)

Unregister the Open MBean corresponding to obj from the mbean server.

Must be called after a successful createRoot call.

Parameters:

obj - The object originally passed to a register method.

getObjectName

ObjectName getObjectName(Object obj)

Get the ObjectName for the given object (which must have been registered via a register call).

Must be called after a successful createRoot call.

Parameters:

obj - The object originally passed to a register call.

Returns:

The ObjectName used to register the MBean.

getAMXClient

AMXClient getAMXClient(Object obj)

Get an AMXClient instance for the object obj, if obj is registered as an MBean in this mom.

Must be called after a successful createRoot call.

Parameters:

obj - The object corresponding to an MBean.

Returns:

An AMXClient that acts as a proxy for this MBean.

getObject

Object getObject(ObjectName oname)

Get the Object that was registered with the given ObjectName. Note that getObject and getObjectName are inverse operations.

Must be called after a successful createRoot call.

Parameters:

oname - The ObjectName used to register the object.

Returns:

The Object passed to the register call.

stripPrefix

void stripPrefix(String... str)

Add a type prefix to strip from type names, to shorten the names for a better presentation to the user. This may only be called before a createRot method is called.

Parameters:

str - Class package name to strip from type name.

Throws:

IllegalStateException - if called after createRoot method.

stripPackagePrefix

void stripPackagePrefix()

Change the default type name algorithm so that if nothing else applies, the entire package prefix is stripped form the Class name. Otherwise, the full Class name is the type.

Throws:

IllegalStateException - if called after a createRoot method.

getDomain

String getDomain()

Return the domain name that was used when this ManagedObjectManager was created. This is the JMX domain that will be used in all ObjectNames created by this ManagedObjectManager.

May be called at any time.

Returns:

Get the domain name for this ManagedObjectManager.

setMBeanServer

void setMBeanServer(MBeanServer server)

Set the MBeanServer to which all MBeans using this interface are published. The default value is java.lang.management.ManagementFactory.getPlatformMBeanServer().

Must be called before a successful createRoot call.

Parameters:

server - The MBeanServer to set as the MBeanServer for this ManagedObjectManager.

getMBeanServer

MBeanServer getMBeanServer()

Get the current MBeanServer.

May be called at any time.

Returns:

The current MBeanServer, either the default, or the value passed to setMBeanServer.

setResourceBundle

void setResourceBundle(ResourceBundle rb)

Set the ResourceBundle to use for getting localized descriptions. If not set, the description is the value in the annotation.

Must be called before a successful call to a createRoot method.

Parameters:

rb - The resource bundle to use. May be null.

getResourceBundle

ResourceBundle getResourceBundle()

Get the resource bundle (if any) set by setResourceBundle.

May be called at any time.

Returns:

The resource bundle set by setResourceBundle: may be null.

addAnnotation

void addAnnotation(AnnotatedElement element,
                 Annotation annotation)

Method to add an annotation to an element that cannot be modified. This is typically needed when dealing with an implementation of an interface that is part of a standardized API, and so the interface cannot be annotated by modifiying the source code. In some cases the implementation of the interface also cannot be inherited, because the implementation is generated by a standardized code generator. Another possibility is that there are several different implementations of the standardized interface, and it is undesirable to annotate each implementation with @InheritedAttributes.

Parameters:

element - The annotated element (class or method for our purposes).

annotation - The annotation we wish to add to the element.

Throws:

IllegalStateException - if called after a call to a createRoot method.

addInheritedAnnotations

void addInheritedAnnotations(Class<?> cls)

Add all annotations for this class as if they were declared on the inheritance parent(s) of the class (immediate superclass for a class, all immediate superinterfaces for an interface). Also add all method annotations for methods that override an inherited method. This acts as if all annotations on cls were actually applied to the immediate super class or interface.

Parameters:

cls - Class to analyze for inherited annotations.

setRegistrationDebug

void setRegistrationDebug(ManagedObjectManager.RegistrationDebugLevel level)

Print debug output to System.out.

May be called at any time.

Parameters:

level - NONE is no debugging at all, NORMAL traces high-level construction of skeletons and type converters, and dumps results of new skeletons and type converters, FINE traces everything in great detail. The tracing is done with INFO-level logger calls. The logger name is that package name (org.glassfish.gmbal.impl).

setRuntimeDebug

void setRuntimeDebug(boolean flag)

Enable generation of debug log at INFO level for runtime MBean operations to the org.glassfish.gmbal.impl logger.

May be called at any time.

Parameters:

flag - true to enable runtime debug, false to disable.

setTypelibDebug

void setTypelibDebug(int level)

Enabled generation of debug log for type evaluator debugging. This happens as part of the registration process for the first time a particular class is processed.

May be called at any time.

Parameters:

level - set to 1 to just see the results of the TypeEvaluator, >1 to see lots of details. WARNING: values >1 will result in a large amount of output.

setJMXRegistrationDebug

void setJMXRegistrationDebug(boolean flag)

Set debugging for JMX registrations. If true, all registrations and deregistrations with the MBeanServer are traced.

Parameters:

flag - True to enalbed registration tracing.

dumpSkeleton

String dumpSkeleton(Object obj)

Dump the skeleton used in the implementation of the MBean for obj. Obj must be currently registered.

Must be called after a successful call to a createRoot method.

Parameters:

obj - The registered object whose skeleton should be displayed.

Returns:

The string representation of the skeleton.

suppressDuplicateRootReport

void suppressDuplicateRootReport(boolean suppressReport)

Suppress reporting of a duplicate root name. If this option is enabled, createRoot( Object ) and createRoot( Object, String ) will return null for a duplicate root name, otherwise a Gmbal error will be reported. Note that this applies ONLY to createRoot: the register methods are unaffected. Also note that any other errors that might occur on createRoot will be reported normally.

Must be called before a successful call to a createRoot method.

getObjectRegistrationManager

org.glassfish.pfl.tf.timer.spi.ObjectRegistrationManager getObjectRegistrationManager()

Return an ObjectRegistrationManager as required in the pfl timer services.

Can be called at any time.